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-rw-r--r--javascript/duktape/duktape.c10605
1 files changed, 8816 insertions, 1789 deletions
diff --git a/javascript/duktape/duktape.c b/javascript/duktape/duktape.c
index 5ee88adf6..3629388a3 100644
--- a/javascript/duktape/duktape.c
+++ b/javascript/duktape/duktape.c
@@ -1,6 +1,8 @@
/*
- * Single file autogenerated distributable for Duktape 1.2.99.
- * Git commit 2a41d0a38eef5edfe8691cf09427b6ee8a3ad5c9 (v1.2.0-310-g2a41d0a).
+ * Single source autogenerated distributable for Duktape 1.3.99.
+
+ * Git commit 40453939c5a5aa16898d19bbac4d02f77196cc8b (v1.3.0-138-g4045393).
+ * Git branch regexp-canonicalize-lookup.
*
* See Duktape AUTHORS.rst and LICENSE.txt for copyright and
* licensing information.
@@ -53,8 +55,9 @@
* Please include an e-mail address, a link to your GitHub profile, or something
* similar to allow your contribution to be identified accurately.
*
-* The following people have contributed code and agreed to irrevocably license
-* their contributions under the Duktape ``LICENSE.txt`` (in order of appearance):
+* The following people have contributed code, website contents, or Wiki contents,
+* and agreed to irrevocably license their contributions under the Duktape
+* ``LICENSE.txt`` (in order of appearance):
*
* * Sami Vaarala <sami.vaarala@iki.fi>
* * Niki Dobrev
@@ -62,6 +65,7 @@
* * L\u00e1szl\u00f3 Lang\u00f3 <llango.u-szeged@partner.samsung.com>
* * Legimet <legimet.calc@gmail.com>
* * Karl Skomski <karl@skomski.com>
+* * Bruce Pascoe <fatcerberus1@gmail.com>
*
* Other contributions
* ===================
@@ -225,6 +229,7 @@ struct duk_hbufferobject;
struct duk_hbuffer;
struct duk_hbuffer_fixed;
struct duk_hbuffer_dynamic;
+struct duk_hbuffer_external;
struct duk_propaccessor;
union duk_propvalue;
@@ -275,6 +280,7 @@ typedef struct duk_hthread duk_hthread;
typedef struct duk_hbuffer duk_hbuffer;
typedef struct duk_hbuffer_fixed duk_hbuffer_fixed;
typedef struct duk_hbuffer_dynamic duk_hbuffer_dynamic;
+typedef struct duk_hbuffer_external duk_hbuffer_external;
typedef struct duk_propaccessor duk_propaccessor;
typedef union duk_propvalue duk_propvalue;
@@ -1581,13 +1587,13 @@ DUK_INTERNAL_DECL const duk_uint8_t duk_strings_data[2624];
DUK_INTERNAL_DECL const duk_c_function duk_bi_native_functions[147];
DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[1952];
#ifdef DUK_USE_BUILTIN_INITJS
-DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[187];
+DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[1757];
#endif /* DUK_USE_BUILTIN_INITJS */
#endif /* !DUK_SINGLE_FILE */
#define DUK_BUILTINS_DATA_LENGTH 1952
#ifdef DUK_USE_BUILTIN_INITJS
-#define DUK_BUILTIN_INITJS_DATA_LENGTH 187
+#define DUK_BUILTIN_INITJS_DATA_LENGTH 1757
#endif /* DUK_USE_BUILTIN_INITJS */
#define DUK_BIDX_GLOBAL 0
@@ -2926,13 +2932,13 @@ DUK_INTERNAL_DECL const duk_uint8_t duk_strings_data[2624];
DUK_INTERNAL_DECL const duk_c_function duk_bi_native_functions[147];
DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[1952];
#ifdef DUK_USE_BUILTIN_INITJS
-DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[187];
+DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[1757];
#endif /* DUK_USE_BUILTIN_INITJS */
#endif /* !DUK_SINGLE_FILE */
#define DUK_BUILTINS_DATA_LENGTH 1952
#ifdef DUK_USE_BUILTIN_INITJS
-#define DUK_BUILTIN_INITJS_DATA_LENGTH 187
+#define DUK_BUILTIN_INITJS_DATA_LENGTH 1757
#endif /* DUK_USE_BUILTIN_INITJS */
#define DUK_BIDX_GLOBAL 0
@@ -4271,13 +4277,13 @@ DUK_INTERNAL_DECL const duk_uint8_t duk_strings_data[2624];
DUK_INTERNAL_DECL const duk_c_function duk_bi_native_functions[147];
DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[1952];
#ifdef DUK_USE_BUILTIN_INITJS
-DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[187];
+DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[1757];
#endif /* DUK_USE_BUILTIN_INITJS */
#endif /* !DUK_SINGLE_FILE */
#define DUK_BUILTINS_DATA_LENGTH 1952
#ifdef DUK_USE_BUILTIN_INITJS
-#define DUK_BUILTIN_INITJS_DATA_LENGTH 187
+#define DUK_BUILTIN_INITJS_DATA_LENGTH 1757
#endif /* DUK_USE_BUILTIN_INITJS */
#define DUK_BIDX_GLOBAL 0
@@ -4869,12 +4875,12 @@ DUK_INTERNAL_DECL duk_uint8_t *duk_bw_insert_ensure_area(duk_hthread *thr, duk_b
DUK_INTERNAL_DECL void duk_bw_remove_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len);
/* No duk_bw_remove_ensure_slice(), functionality would be identical. */
-DUK_ALWAYS_INLINE DUK_INTERNAL_DECL duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p);
-DUK_ALWAYS_INLINE DUK_INTERNAL_DECL duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p);
-DUK_ALWAYS_INLINE DUK_INTERNAL_DECL duk_double_t duk_raw_read_double_be(duk_uint8_t **p);
-DUK_ALWAYS_INLINE DUK_INTERNAL_DECL void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val);
-DUK_ALWAYS_INLINE DUK_INTERNAL_DECL void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val);
-DUK_ALWAYS_INLINE DUK_INTERNAL_DECL void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val);
+DUK_INTERNAL_DECL duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p);
+DUK_INTERNAL_DECL duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p);
+DUK_INTERNAL_DECL duk_double_t duk_raw_read_double_be(duk_uint8_t **p);
+DUK_INTERNAL_DECL void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val);
+DUK_INTERNAL_DECL void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val);
+DUK_INTERNAL_DECL void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val);
#if defined(DUK_USE_DEBUGGER_SUPPORT) /* For now only needed by the debugger. */
DUK_INTERNAL void duk_byteswap_bytes(duk_uint8_t *p, duk_small_uint_t len);
@@ -4948,7 +4954,7 @@ DUK_INTERNAL_DECL const char *duk_str_not_configurable;
#define DUK_STR_SPRINTF_TOO_LONG duk_str_sprintf_too_long
#define DUK_STR_ALLOC_FAILED duk_str_alloc_failed
#define DUK_STR_POP_TOO_MANY duk_str_pop_too_many
-#define DUK_STR_BUFFER_NOT_DYNAMIC duk_str_buffer_not_dynamic
+#define DUK_STR_WRONG_BUFFER_TYPE duk_str_wrong_buffer_type
#define DUK_STR_FAILED_TO_EXTEND_VALSTACK duk_str_failed_to_extend_valstack
#define DUK_STR_ENCODE_FAILED duk_str_encode_failed
#define DUK_STR_DECODE_FAILED duk_str_decode_failed
@@ -4982,7 +4988,7 @@ DUK_INTERNAL_DECL const char *duk_str_buffer_too_long;
DUK_INTERNAL_DECL const char *duk_str_sprintf_too_long;
DUK_INTERNAL_DECL const char *duk_str_alloc_failed;
DUK_INTERNAL_DECL const char *duk_str_pop_too_many;
-DUK_INTERNAL_DECL const char *duk_str_buffer_not_dynamic;
+DUK_INTERNAL_DECL const char *duk_str_wrong_buffer_type;
DUK_INTERNAL_DECL const char *duk_str_failed_to_extend_valstack;
DUK_INTERNAL_DECL const char *duk_str_encode_failed;
DUK_INTERNAL_DECL const char *duk_str_decode_failed;
@@ -5344,11 +5350,6 @@ typedef duk_uint32_t duk_instr_t;
#define DUK_EXTRAOP_LABEL 32
#define DUK_EXTRAOP_ENDLABEL 33
-/* DUK_OP_EXTRA for debugging */
-#define DUK_EXTRAOP_DUMPREG 128
-#define DUK_EXTRAOP_DUMPREGS 129
-#define DUK_EXTRAOP_LOGMARK 130
-
/* DUK_OP_CALL flags in A */
#define DUK_BC_CALL_FLAG_TAILCALL (1 << 0)
#define DUK_BC_CALL_FLAG_EVALCALL (1 << 1)
@@ -5360,8 +5361,7 @@ typedef duk_uint32_t duk_instr_t;
#define DUK_BC_TRYCATCH_FLAG_WITH_BINDING (1 << 3)
/* DUK_OP_RETURN flags in A */
-#define DUK_BC_RETURN_FLAG_FAST (1 << 0)
-#define DUK_BC_RETURN_FLAG_HAVE_RETVAL (1 << 1)
+#define DUK_BC_RETURN_FLAG_HAVE_RETVAL (1 << 0)
/* DUK_OP_DECLVAR flags in A; bottom bits are reserved for propdesc flags (DUK_PROPDESC_FLAG_XXX) */
#define DUK_BC_DECLVAR_FLAG_UNDEF_VALUE (1 << 4) /* use 'undefined' for value automatically */
@@ -5818,11 +5818,6 @@ DUK_INTERNAL_DECL void duk_lexer_parse_re_ranges(duk_lexer_ctx *lex_ctx, duk_re_
#define DUK_JS_COMPILER_H_INCLUDED
/* ecmascript compiler limits */
-#if defined(DUK_USE_DEEP_C_STACK)
-#define DUK_COMPILER_RECURSION_LIMIT 2500L
-#else
-#define DUK_COMPILER_RECURSION_LIMIT 50L
-#endif
#define DUK_COMPILER_TOKEN_LIMIT 100000000L /* 1e8: protects against deeply nested inner functions */
/* maximum loopcount for peephole optimization */
@@ -5992,7 +5987,7 @@ struct duk_compiler_func {
duk_bool_t is_setget; /* is a setter/getter */
duk_bool_t is_decl; /* is a function declaration (as opposed to function expression) */
duk_bool_t is_strict; /* function is strict */
- duk_bool_t is_notail; /* function must not be tailcalled */
+ duk_bool_t is_notail; /* function must not be tail called */
duk_bool_t in_directive_prologue; /* parsing in "directive prologue", recognize directives */
duk_bool_t in_scanning; /* parsing in "scanning" phase (first pass) */
duk_bool_t may_direct_eval; /* function may call direct eval */
@@ -6035,7 +6030,7 @@ struct duk_compiler_ctx {
* Prototypes
*/
-#define DUK_JS_COMPILE_FLAG_EVAL (1 << 0) /* source is eval code (not program) */
+#define DUK_JS_COMPILE_FLAG_EVAL (1 << 0) /* source is eval code (not global) */
#define DUK_JS_COMPILE_FLAG_STRICT (1 << 1) /* strict outer context */
#define DUK_JS_COMPILE_FLAG_FUNCEXPR (1 << 2) /* source is a function expression (used for Function constructor) */
@@ -6054,19 +6049,9 @@ DUK_INTERNAL_DECL void duk_js_compile(duk_hthread *thr, const duk_uint8_t *src_b
#define DUK_RE_MAX_ATOM_COPIES 1000
/* regexp compilation limits */
-#if defined(DUK_USE_DEEP_C_STACK)
-#define DUK_RE_COMPILE_RECURSION_LIMIT 10000
-#else
-#define DUK_RE_COMPILE_RECURSION_LIMIT 100
-#endif
#define DUK_RE_COMPILE_TOKEN_LIMIT 100000000L /* 1e8 */
/* regexp execution limits */
-#if defined(DUK_USE_DEEP_C_STACK)
-#define DUK_RE_EXECUTE_RECURSION_LIMIT 10000
-#else
-#define DUK_RE_EXECUTE_RECURSION_LIMIT 100
-#endif
#define DUK_RE_EXECUTE_STEPS_LIMIT 1000000000L /* 1e9 */
/* regexp opcodes */
@@ -6149,7 +6134,7 @@ DUK_INTERNAL_DECL void duk_regexp_match_force_global(duk_hthread *thr); /* hack
*
* Selecting the tagged type format involves many trade-offs (memory
* use, size and performance of generated code, portability, etc),
- * see doc/types.txt for a detailed discussion (especially of how the
+ * see doc/types.rst for a detailed discussion (especially of how the
* IEEE double format is used to pack tagged values).
*
* NB: because macro arguments are often expressions, macros should
@@ -6185,22 +6170,20 @@ typedef union duk_double_union duk_tval;
#if defined(DUK_USE_FASTINT)
#define DUK_TAG_FASTINT 0xfff1UL /* embed: integer value */
#endif
-#define DUK_TAG_UNDEFINED 0xfff2UL /* embed: 0 or 1 (normal or unused) */
-#define DUK_TAG_NULL 0xfff3UL /* embed: nothing */
-#define DUK_TAG_BOOLEAN 0xfff4UL /* embed: 0 or 1 (false or true) */
+#define DUK_TAG_UNUSED 0xfff2UL /* marker; not actual tagged value */
+#define DUK_TAG_UNDEFINED 0xfff3UL /* embed: nothing */
+#define DUK_TAG_NULL 0xfff4UL /* embed: nothing */
+#define DUK_TAG_BOOLEAN 0xfff5UL /* embed: 0 or 1 (false or true) */
/* DUK_TAG_NUMBER would logically go here, but it has multiple 'tags' */
-#define DUK_TAG_POINTER 0xfff5UL /* embed: void ptr */
-#define DUK_TAG_LIGHTFUNC 0xfff6UL /* embed: func ptr */
-#define DUK_TAG_STRING 0xfff7UL /* embed: duk_hstring ptr */
-#define DUK_TAG_OBJECT 0xfff8UL /* embed: duk_hobject ptr */
-#define DUK_TAG_BUFFER 0xfff9UL /* embed: duk_hbuffer ptr */
+#define DUK_TAG_POINTER 0xfff6UL /* embed: void ptr */
+#define DUK_TAG_LIGHTFUNC 0xfff7UL /* embed: func ptr */
+#define DUK_TAG_STRING 0xfff8UL /* embed: duk_hstring ptr */
+#define DUK_TAG_OBJECT 0xfff9UL /* embed: duk_hobject ptr */
+#define DUK_TAG_BUFFER 0xfffaUL /* embed: duk_hbuffer ptr */
/* for convenience */
-#define DUK_XTAG_UNDEFINED_ACTUAL 0xfff20000UL
-#define DUK_XTAG_UNDEFINED_UNUSED 0xfff20001UL
-#define DUK_XTAG_NULL 0xfff30000UL
-#define DUK_XTAG_BOOLEAN_FALSE 0xfff40000UL
-#define DUK_XTAG_BOOLEAN_TRUE 0xfff40001UL
+#define DUK_XTAG_BOOLEAN_FALSE 0xfff50000UL
+#define DUK_XTAG_BOOLEAN_TRUE 0xfff50001UL
/* two casts to avoid gcc warning: "warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]" */
#ifdef DUK_USE_64BIT_OPS
@@ -6277,10 +6260,12 @@ typedef union duk_double_union duk_tval;
#define DUK__TVAL_GET_FASTINT_I32(v) ((duk_int32_t) (v)->ui[DUK_DBL_IDX_UI1])
#endif /* DUK_USE_FASTINT */
-#define DUK_TVAL_SET_UNDEFINED_ACTUAL(v) DUK_DBLUNION_SET_HIGH32((v), DUK_XTAG_UNDEFINED_ACTUAL)
-#define DUK_TVAL_SET_UNDEFINED_UNUSED(v) DUK_DBLUNION_SET_HIGH32((v), DUK_XTAG_UNDEFINED_UNUSED)
-
-/* Note: 16-bit initializer suffices (unlike for undefined/boolean) */
+#define DUK_TVAL_SET_UNDEFINED(v) do { \
+ (v)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_UNDEFINED; \
+ } while (0)
+#define DUK_TVAL_SET_UNUSED(v) do { \
+ (v)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_UNUSED; \
+ } while (0)
#define DUK_TVAL_SET_NULL(v) do { \
(v)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_NULL; \
} while (0)
@@ -6291,12 +6276,17 @@ typedef union duk_double_union duk_tval;
/* Assumes that caller has normalized NaNs, otherwise trouble ahead. */
#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_SET_DOUBLE(v,d) DUK_DBLUNION_SET_DOUBLE((v), (d))
+#define DUK_TVAL_SET_DOUBLE(v,d) do { \
+ duk_double_t duk__dblval; \
+ duk__dblval = (d); \
+ DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); \
+ DUK_DBLUNION_SET_DOUBLE((v), duk__dblval); \
+ } while (0)
#define DUK_TVAL_SET_FASTINT(v,i) DUK__TVAL_SET_FASTINT((v), (i))
#define DUK_TVAL_SET_FASTINT_I32(v,i) DUK__TVAL_SET_FASTINT_I32((v), (i))
#define DUK_TVAL_SET_FASTINT_U32(v,i) DUK__TVAL_SET_FASTINT_U32((v), (i))
#define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) duk_tval_set_number_chkfast((v), (d))
-#define DUK_TVAL_SET_NUMBER(v,d) DUK_DBLUNION_SET_DOUBLE((v), (d))
+#define DUK_TVAL_SET_NUMBER(v,d) DUK_TVAL_SET_DOUBLE((v), (d))
#define DUK_TVAL_CHKFAST_INPLACE(v) do { \
duk_tval *duk__tv; \
duk_double_t duk__d; \
@@ -6307,9 +6297,14 @@ typedef union duk_double_union duk_tval;
} \
} while (0)
#else
-#define DUK_TVAL_SET_NUMBER(v,d) DUK_DBLUNION_SET_DOUBLE((v), (d))
-#define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) DUK_TVAL_SET_NUMBER((v), (d))
-#define DUK_TVAL_SET_DOUBLE(v,d) DUK_TVAL_SET_NUMBER((v), (d))
+#define DUK_TVAL_SET_DOUBLE(v,d) do { \
+ duk_double_t duk__dblval; \
+ duk__dblval = (d); \
+ DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); \
+ DUK_DBLUNION_SET_DOUBLE((v), duk__dblval); \
+ } while (0)
+#define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) DUK_TVAL_SET_DOUBLE((v), (d))
+#define DUK_TVAL_SET_NUMBER(v,d) DUK_TVAL_SET_DOUBLE((v), (d))
#define DUK_TVAL_CHKFAST_INPLACE(v) do { } while (0)
#endif
@@ -6349,8 +6344,7 @@ typedef union duk_double_union duk_tval;
#define DUK_TVAL_GET_TAG(v) ((duk_small_uint_t) (v)->us[DUK_DBL_IDX_US0])
#define DUK_TVAL_IS_UNDEFINED(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_UNDEFINED)
-#define DUK_TVAL_IS_UNDEFINED_ACTUAL(v) ((v)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_UNDEFINED_ACTUAL)
-#define DUK_TVAL_IS_UNDEFINED_UNUSED(v) ((v)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_UNDEFINED_UNUSED)
+#define DUK_TVAL_IS_UNUSED(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_UNUSED)
#define DUK_TVAL_IS_NULL(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_NULL)
#define DUK_TVAL_IS_BOOLEAN(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_BOOLEAN)
#define DUK_TVAL_IS_BOOLEAN_TRUE(v) ((v)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_BOOLEAN_TRUE)
@@ -6370,6 +6364,7 @@ typedef union duk_double_union duk_tval;
#define DUK_TVAL_IS_DOUBLE(v) DUK_TVAL_IS_NUMBER((v))
#endif
+/* This is performance critical because it appears in every DECREF. */
#define DUK_TVAL_IS_HEAP_ALLOCATED(v) (DUK_TVAL_GET_TAG((v)) >= DUK_TAG_STRING)
#if defined(DUK_USE_FASTINT)
@@ -6423,9 +6418,10 @@ struct duk_tval_struct {
#define DUK_TAG_BOOLEAN 4
#define DUK_TAG_POINTER 5
#define DUK_TAG_LIGHTFUNC 6
-#define DUK_TAG_STRING 7
-#define DUK_TAG_OBJECT 8
-#define DUK_TAG_BUFFER 9
+#define DUK_TAG_UNUSED 7 /* marker; not actual tagged type */
+#define DUK_TAG_STRING 8 /* first heap allocated, match bit boundary */
+#define DUK_TAG_OBJECT 9
+#define DUK_TAG_BUFFER 10
/* DUK__TAG_NUMBER is intentionally first, as it is the default clause in code
* to support the 8-byte representation. Further, it is a non-heap-allocated
@@ -6434,14 +6430,12 @@ struct duk_tval_struct {
*/
/* setters */
-#define DUK_TVAL_SET_UNDEFINED_ACTUAL(tv) do { \
+#define DUK_TVAL_SET_UNDEFINED(tv) do { \
(tv)->t = DUK_TAG_UNDEFINED; \
- (tv)->v.i = 0; \
} while (0)
-#define DUK_TVAL_SET_UNDEFINED_UNUSED(tv) do { \
- (tv)->t = DUK_TAG_UNDEFINED; \
- (tv)->v.i = 1; \
+#define DUK_TVAL_SET_UNUSED(tv) do { \
+ (tv)->t = DUK_TAG_UNUSED; \
} while (0)
#define DUK_TVAL_SET_NULL(tv) do { \
@@ -6488,7 +6482,7 @@ struct duk_tval_struct {
(tv)->t = DUK__TAG_NUMBER; \
(tv)->v.d = (val); \
} while (0)
-#define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) \
+#define DUK_TVAL_SET_NUMBER_CHKFAST(tv,d) \
DUK_TVAL_SET_NUMBER((tv), (d))
#define DUK_TVAL_SET_DOUBLE(v,d) \
DUK_TVAL_SET_NUMBER((tv), (d))
@@ -6566,8 +6560,7 @@ struct duk_tval_struct {
/* decoding */
#define DUK_TVAL_GET_TAG(tv) ((tv)->t)
#define DUK_TVAL_IS_UNDEFINED(tv) ((tv)->t == DUK_TAG_UNDEFINED)
-#define DUK_TVAL_IS_UNDEFINED_ACTUAL(tv) (((tv)->t == DUK_TAG_UNDEFINED) && ((tv)->v.i == 0))
-#define DUK_TVAL_IS_UNDEFINED_UNUSED(tv) (((tv)->t == DUK_TAG_UNDEFINED) && ((tv)->v.i != 0))
+#define DUK_TVAL_IS_UNUSED(tv) ((tv)->t == DUK_TAG_UNUSED)
#define DUK_TVAL_IS_NULL(tv) ((tv)->t == DUK_TAG_NULL)
#define DUK_TVAL_IS_BOOLEAN(tv) ((tv)->t == DUK_TAG_BOOLEAN)
#define DUK_TVAL_IS_BOOLEAN_TRUE(tv) (((tv)->t == DUK_TAG_BOOLEAN) && ((tv)->v.i != 0))
@@ -6587,7 +6580,15 @@ struct duk_tval_struct {
#define DUK_TVAL_IS_OBJECT(tv) ((tv)->t == DUK_TAG_OBJECT)
#define DUK_TVAL_IS_BUFFER(tv) ((tv)->t == DUK_TAG_BUFFER)
+/* This is performance critical because it's needed for every DECREF.
+ * Take advantage of the fact that the first heap allocated tag is 8,
+ * so that bit 3 is set for all heap allocated tags (and never set for
+ * non-heap-allocated tags).
+ */
+#if 0
#define DUK_TVAL_IS_HEAP_ALLOCATED(tv) ((tv)->t >= DUK_TAG_STRING)
+#endif
+#define DUK_TVAL_IS_HEAP_ALLOCATED(tv) ((tv)->t & 0x08)
#if defined(DUK_USE_FASTINT)
#if 0
@@ -6987,6 +6988,250 @@ struct duk_heaphdr_string {
} \
} while (0)
+/*
+ * Macros to set a duk_tval and update refcount of the target (decref the
+ * old value and incref the new value if necessary). This is both performance
+ * and footprint critical; any changes made should be measured for size/speed.
+ */
+
+#define DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0(thr,tvptr_dst) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_UNDEFINED(tv__dst); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+#define DUK_TVAL_SET_UNUSED_UPDREF_ALT0(thr,tvptr_dst) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_UNUSED(tv__dst); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+#define DUK_TVAL_SET_NULL_UPDREF_ALT0(thr,tvptr_dst) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_NULL(tv__dst); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+#define DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_BOOLEAN(tv__dst, (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+#define DUK_TVAL_SET_NUMBER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_NUMBER(tv__dst, (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_NUMBER_CHKFAST(tv__dst, (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+#define DUK_TVAL_SET_DOUBLE_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_DOUBLE(tv__dst, (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+#define DUK_TVAL_SET_NAN_UPDREF_ALT0(thr,tvptr_dst) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_NAN(tv__dst); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+#if defined(DUK_USE_FASTINT)
+#define DUK_TVAL_SET_FASTINT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_FASTINT(tv__dst, (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+#define DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_FASTINT_I32(tv__dst, (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+#define DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_FASTINT_U32(tv__dst, (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+#endif /* DUK_USE_FASTINT */
+
+#define DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0(thr,tvptr_dst,lf_v,lf_fp,lf_flags) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_LIGHTFUNC(tv__dst, (lf_v), (lf_fp), (lf_flags)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+#define DUK_TVAL_SET_STRING_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_STRING(tv__dst, (newval)); \
+ DUK_HSTRING_INCREF((thr), (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+#define DUK_TVAL_SET_OBJECT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_OBJECT(tv__dst, (newval)); \
+ DUK_HOBJECT_INCREF((thr), (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+#define DUK_TVAL_SET_BUFFER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_BUFFER(tv__dst, (newval)); \
+ DUK_HBUFFER_INCREF((thr), (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+#define DUK_TVAL_SET_POINTER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_POINTER(tv__dst, (newval)); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+/* DUK_TVAL_SET_TVAL_UPDREF() is used a lot in executor, property lookups,
+ * etc, so it's very important for performance.
+ *
+ * NOTE: the source and destination duk_tval pointers may be the same, and
+ * the macros MUST deal with that correctly.
+ */
+
+/* Original idiom used. */
+#define DUK_TVAL_SET_TVAL_UPDREF_ALT0(thr,tvptr_dst,tvptr_src) do { \
+ duk_tval *tv__dst, *tv__src; duk_tval tv__tmp; \
+ tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
+ DUK_TVAL_INCREF((thr), tv__src); \
+ DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+#if 0 /* XXX: to optimize and measure */
+/* Original idiom but with forced fast refcount macros. */
+#define DUK_TVAL_SET_TVAL_UPDREF_ALT0F(thr,tvptr_dst,tvptr_src) do { \
+ duk_tval *tv__dst, *tv__src; duk_tval tv__tmp; \
+ tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
+ DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
+ DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
+ DUK_TVAL_INCREF_FAST((thr), tv__src); \
+ DUK_TVAL_DECREF_FAST((thr), &tv__tmp); /* side effects */ \
+ } while (0)
+
+/* Use 'h__obj' temporary to avoid a full duk_tval copy. */
+#define DUK_TVAL_SET_TVAL_UPDREF_ALT1(thr,tvptr_dst,tvptr_src) do { \
+ duk_tval *tv__dst, *tv__src; duk_heaphdr *h__obj; \
+ tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
+ if (DUK_TVAL_IS_HEAP_ALLOCATED(tv__dst)) { \
+ h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \
+ DUK_ASSERT(h__obj != NULL); \
+ } else { \
+ h__obj = NULL; \
+ } \
+ DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
+ DUK_TVAL_INCREF((thr), tv__src); \
+ if (h__obj != NULL) { \
+ DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \
+ } \
+ } while (0)
+
+/* Use 'h__obj' temporary to avoid a full duk_tval copy. */
+#define DUK_TVAL_SET_TVAL_UPDREF_ALT1A(thr,tvptr_dst,tvptr_src) do { \
+ duk_tval *tv__dst, *tv__src; duk_heaphdr *h__obj; \
+ tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
+ if (DUK_UNLIKELY(DUK_TVAL_IS_HEAP_ALLOCATED(tv__dst))) { \
+ h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \
+ DUK_ASSERT(h__obj != NULL); \
+ } else { \
+ h__obj = NULL; \
+ } \
+ DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
+ DUK_TVAL_INCREF_FAST((thr), tv__src); \
+ if (DUK_UNLIKELY(h__obj != NULL)) { \
+ DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \
+ } \
+ } while (0)
+
+/* Avoid rechecking 'h__obj'. */
+#define DUK_TVAL_SET_TVAL_UPDREF_ALT2(thr,tvptr_dst,tvptr_src) do { \
+ duk_tval *tv__dst, *tv__src; duk_heaphdr *h__obj; \
+ tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
+ if (DUK_TVAL_IS_HEAP_ALLOCATED(tv__dst)) { \
+ h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \
+ DUK_ASSERT(h__obj != NULL); \
+ DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
+ DUK_TVAL_INCREF((thr), tv__src); \
+ DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \
+ } else { \
+ DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
+ DUK_TVAL_INCREF((thr), tv__src); \
+ } \
+ } while (0)
+
+/* Avoid rechecking 'h__obj'. */
+#define DUK_TVAL_SET_TVAL_UPDREF_ALT3(thr,tvptr_dst,tvptr_src) do { \
+ duk_tval *tv__dst, *tv__src; duk_heaphdr *h__obj; \
+ tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
+ if (DUK_UNLIKELY(DUK_TVAL_IS_HEAP_ALLOCATED(tv__dst))) { \
+ h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \
+ DUK_ASSERT(h__obj != NULL); \
+ DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
+ DUK_TVAL_INCREF_FAST((thr), tv__src); \
+ DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \
+ } else { \
+ DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
+ DUK_TVAL_INCREF_FAST((thr), tv__src); \
+ } \
+ } while (0)
+#endif
+
+/* XXX: no optimized variants yet */
+#define DUK_TVAL_SET_UNDEFINED_UPDREF DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0
+#define DUK_TVAL_SET_UNUSED_UPDREF DUK_TVAL_SET_UNUSED_UPDREF_ALT0
+#define DUK_TVAL_SET_NULL_UPDREF DUK_TVAL_SET_NULL_UPDREF_ALT0
+#define DUK_TVAL_SET_BOOLEAN_UPDREF DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0
+#define DUK_TVAL_SET_NUMBER_UPDREF DUK_TVAL_SET_NUMBER_UPDREF_ALT0
+#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0
+#define DUK_TVAL_SET_DOUBLE_UPDREF DUK_TVAL_SET_DOUBLE_UPDREF_ALT0
+#define DUK_TVAL_SET_NAN_UPDREF DUK_TVAL_SET_NAN_UPDREF_ALT0
+#if defined(DUK_USE_FASTINT)
+#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_FASTINT_UPDREF_ALT0
+#define DUK_TVAL_SET_FASTINT_I32_UPDREF DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0
+#define DUK_TVAL_SET_FASTINT_U32_UPDREF DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0
+#endif /* DUK_USE_FASTINT */
+#define DUK_TVAL_SET_LIGHTFUNC_UPDREF DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0
+#define DUK_TVAL_SET_STRING_UPDREF DUK_TVAL_SET_STRING_UPDREF_ALT0
+#define DUK_TVAL_SET_OBJECT_UPDREF DUK_TVAL_SET_OBJECT_UPDREF_ALT0
+#define DUK_TVAL_SET_BUFFER_UPDREF DUK_TVAL_SET_BUFFER_UPDREF_ALT0
+#define DUK_TVAL_SET_POINTER_UPDREF DUK_TVAL_SET_POINTER_UPDREF_ALT0
+
+#if defined(DUK_USE_FAST_REFCOUNT_DEFAULT)
+/* Optimized for speed. */
+#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0
+#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0
+#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0
+#else
+/* Optimized for size. */
+#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0
+#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0
+#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0
+#endif
+
#else /* DUK_USE_REFERENCE_COUNTING */
#define DUK_TVAL_INCREF_FAST(thr,v) do {} while (0) /* nop */
@@ -7018,6 +7263,128 @@ struct duk_heaphdr_string {
#define DUK_HOBJECT_INCREF_ALLOWNULL(thr,h) do {} while (0) /* nop */
#define DUK_HOBJECT_DECREF_ALLOWNULL(thr,h) do {} while (0) /* nop */
+#define DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0(thr,tvptr_dst) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_UNDEFINED(tv__dst); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_UNUSED_UPDREF_ALT0(thr,tvptr_dst) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_UNUSED(tv__dst); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_NULL_UPDREF_ALT0(thr,tvptr_dst) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_NULL(tv__dst); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_BOOLEAN(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_NUMBER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_NUMBER(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_NUMBER_CHKFAST(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+#define DUK_TVAL_SET_DOUBLE_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_DOUBLE(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+#define DUK_TVAL_SET_NAN_UPDREF_ALT0(thr,tvptr_dst) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_NAN(tv__dst); \
+ DUK_UNREF((thr)); \
+ } while (0)
+#if defined(DUK_USE_FASTINT)
+#define DUK_TVAL_SET_FASTINT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_FASTINT(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+#define DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_FASTINT_I32(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+#define DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_FASTINT_U32(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+#endif /* DUK_USE_FASTINT */
+
+#define DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0(thr,tvptr_dst,lf_v,lf_fp,lf_flags) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_LIGHTFUNC(tv__dst, (lf_v), (lf_fp), (lf_flags)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_STRING_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_STRING(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_OBJECT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_OBJECT(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_BUFFER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_BUFFER(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_POINTER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
+ duk_tval *tv__dst; tv__dst = (tvptr_dst); \
+ DUK_TVAL_SET_POINTER(tv__dst, (newval)); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_TVAL_UPDREF_ALT0(thr,tvptr_dst,tvptr_src) do { \
+ duk_tval *tv__dst, *tv__src; \
+ tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
+ DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
+ DUK_UNREF((thr)); \
+ } while (0)
+
+#define DUK_TVAL_SET_UNDEFINED_UPDREF DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0
+#define DUK_TVAL_SET_UNUSED_UPDREF DUK_TVAL_SET_UNUSED_UPDREF_ALT0
+#define DUK_TVAL_SET_NULL_UPDREF DUK_TVAL_SET_NULL_UPDREF_ALT0
+#define DUK_TVAL_SET_BOOLEAN_UPDREF DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0
+#define DUK_TVAL_SET_NUMBER_UPDREF DUK_TVAL_SET_NUMBER_UPDREF_ALT0
+#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0
+#define DUK_TVAL_SET_DOUBLE_UPDREF DUK_TVAL_SET_DOUBLE_UPDREF_ALT0
+#define DUK_TVAL_SET_NAN_UPDREF DUK_TVAL_SET_NAN_UPDREF_ALT0
+#if defined(DUK_USE_FASTINT)
+#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_FASTINT_UPDREF_ALT0
+#define DUK_TVAL_SET_FASTINT_I32_UPDREF DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0
+#define DUK_TVAL_SET_FASTINT_U32_UPDREF DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0
+#endif /* DUK_USE_FASTINT */
+#define DUK_TVAL_SET_LIGHTFUNC_UPDREF DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0
+#define DUK_TVAL_SET_STRING_UPDREF DUK_TVAL_SET_STRING_UPDREF_ALT0
+#define DUK_TVAL_SET_OBJECT_UPDREF DUK_TVAL_SET_OBJECT_UPDREF_ALT0
+#define DUK_TVAL_SET_BUFFER_UPDREF DUK_TVAL_SET_BUFFER_UPDREF_ALT0
+#define DUK_TVAL_SET_POINTER_UPDREF DUK_TVAL_SET_POINTER_UPDREF_ALT0
+
+#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0
+#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0
+#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0
+
#endif /* DUK_USE_REFERENCE_COUNTING */
#endif /* DUK_HEAPHDR_H_INCLUDED */
@@ -7122,10 +7489,16 @@ DUK_INTERNAL_DECL void *duk_get_voidptr(duk_context *ctx, duk_idx_t index);
#endif
DUK_INTERNAL_DECL duk_hstring *duk_to_hstring(duk_context *ctx, duk_idx_t index);
+#if defined(DUK_USE_DEBUGGER_SUPPORT) /* only needed by debugger for now */
+DUK_INTERNAL_DECL duk_hstring *duk_safe_to_hstring(duk_context *ctx, duk_idx_t index);
+#endif
+
DUK_INTERNAL_DECL duk_int_t duk_to_int_clamped_raw(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval, duk_bool_t *out_clamped); /* out_clamped=NULL, RangeError if outside range */
DUK_INTERNAL_DECL duk_int_t duk_to_int_clamped(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval);
DUK_INTERNAL_DECL duk_int_t duk_to_int_check_range(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval);
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL_DECL duk_uint8_t duk_to_uint8clamped(duk_context *ctx, duk_idx_t index);
+#endif
DUK_INTERNAL_DECL duk_hstring *duk_require_hstring(duk_context *ctx, duk_idx_t index);
DUK_INTERNAL_DECL duk_hobject *duk_require_hobject(duk_context *ctx, duk_idx_t index);
@@ -7142,9 +7515,6 @@ DUK_INTERNAL_DECL duk_hnativefunction *duk_require_hnativefunction(duk_context *
DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_or_lfunc(duk_context *ctx, duk_idx_t index);
DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_or_lfunc_coerce(duk_context *ctx, duk_idx_t index);
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-DUK_INTERNAL_DECL void duk_push_unused(duk_context *ctx);
-#endif
DUK_INTERNAL_DECL void duk_push_hstring(duk_context *ctx, duk_hstring *h);
DUK_INTERNAL_DECL void duk_push_hstring_stridx(duk_context *ctx, duk_small_int_t stridx);
DUK_INTERNAL_DECL void duk_push_hobject(duk_context *ctx, duk_hobject *h);
@@ -7166,7 +7536,7 @@ DUK_INTERNAL_DECL void duk_push_c_function_noconstruct_noexotic(duk_context *ctx
DUK_INTERNAL_DECL void duk_push_string_funcptr(duk_context *ctx, duk_uint8_t *ptr, duk_size_t sz);
DUK_INTERNAL_DECL void duk_push_lightfunc_name(duk_context *ctx, duk_tval *tv);
DUK_INTERNAL_DECL void duk_push_lightfunc_tostring(duk_context *ctx, duk_tval *tv);
-DUK_INTERNAL_DECL duk_hbufferobject *duk_push_bufferobject(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx);
+DUK_INTERNAL_DECL duk_hbufferobject *duk_push_bufferobject_raw(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx);
DUK_INTERNAL_DECL duk_bool_t duk_get_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx); /* [] -> [val] */
DUK_INTERNAL_DECL duk_bool_t duk_put_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx); /* [val] -> [] */
@@ -7436,7 +7806,7 @@ DUK_INTERNAL_DECL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr
#define DUK_HOBJECT_FLAG_THREAD DUK_HEAPHDR_USER_FLAG(7) /* object is a thread (duk_hthread) */
#define DUK_HOBJECT_FLAG_ARRAY_PART DUK_HEAPHDR_USER_FLAG(8) /* object has an array part (a_size may still be 0) */
#define DUK_HOBJECT_FLAG_STRICT DUK_HEAPHDR_USER_FLAG(9) /* function: function object is strict */
-#define DUK_HOBJECT_FLAG_NOTAIL DUK_HEAPHDR_USER_FLAG(10) /* function: function must not be tailcalled */
+#define DUK_HOBJECT_FLAG_NOTAIL DUK_HEAPHDR_USER_FLAG(10) /* function: function must not be tail called */
#define DUK_HOBJECT_FLAG_NEWENV DUK_HEAPHDR_USER_FLAG(11) /* function: create new environment when called (see duk_hcompiledfunction) */
#define DUK_HOBJECT_FLAG_NAMEBINDING DUK_HEAPHDR_USER_FLAG(12) /* function: create binding for func name (function templates only, used for named function expressions) */
#define DUK_HOBJECT_FLAG_CREATEARGS DUK_HEAPHDR_USER_FLAG(13) /* function: create an arguments object on function call */
@@ -7799,8 +8169,8 @@ DUK_INTERNAL_DECL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr
(set_e_k) = (duk_hstring **) (void *) ((set_e_pv) + (n_ent)); \
(set_e_f) = (duk_uint8_t *) (void *) ((set_e_k) + (n_ent)); \
(set_a) = (duk_tval *) (void *) (((duk_uint8_t *) (set_e_f)) + \
- sizeof(duk_uint8_t) * (n_ent) + \
- DUK_HOBJECT_E_FLAG_PADDING((n_ent))); \
+ sizeof(duk_uint8_t) * (n_ent) + \
+ DUK_HOBJECT_E_FLAG_PADDING((n_ent))); \
(set_h) = (duk_uint32_t *) (void *) ((set_a) + (n_arr)); \
} while (0)
#elif defined(DUK_USE_HOBJECT_LAYOUT_3)
@@ -8008,7 +8378,7 @@ DUK_INTERNAL_DECL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr
#endif
/* note: this updates refcounts */
-#define DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr,h,p) duk_hobject_set_prototype((thr), (h), (p))
+#define DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr,h,p) duk_hobject_set_prototype_updref((thr), (h), (p))
/*
* Resizing and hash behavior
@@ -8296,7 +8666,7 @@ DUK_INTERNAL_DECL duk_ret_t duk_hobject_get_enumerated_keys(duk_context *ctx, du
DUK_INTERNAL_DECL duk_bool_t duk_hobject_enumerator_next(duk_context *ctx, duk_bool_t get_value);
/* macros */
-DUK_INTERNAL_DECL void duk_hobject_set_prototype(duk_hthread *thr, duk_hobject *h, duk_hobject *p);
+DUK_INTERNAL_DECL void duk_hobject_set_prototype_updref(duk_hthread *thr, duk_hobject *h, duk_hobject *p);
/* finalization */
DUK_INTERNAL_DECL void duk_hobject_run_finalizer(duk_hthread *thr, duk_hobject *obj);
@@ -8625,8 +8995,9 @@ struct duk_hnativefunction {
} else { \
/* No assertions for offset or length; in particular, \
* it's OK for length to be longer than underlying \
- * buffer. \
+ * buffer. Just ensure they don't wrap when added. \
*/ \
+ DUK_ASSERT((h)->offset + (h)->length >= (h)->offset); \
} \
} while (0)
@@ -8710,7 +9081,9 @@ struct duk_hbufferobject {
duk_uint8_t is_view;
};
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL_DECL duk_uint_t duk_hbufferobject_clamp_bytelength(duk_hbufferobject *h_bufobj, duk_uint_t len);
+#endif
DUK_INTERNAL_DECL void duk_hbufferobject_push_validated_read(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_uint8_t *p, duk_small_uint_t elem_size);
DUK_INTERNAL_DECL void duk_hbufferobject_validated_write(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_uint8_t *p, duk_small_uint_t elem_size);
@@ -8767,7 +9140,7 @@ DUK_INTERNAL_DECL void duk_hbufferobject_validated_write(duk_context *ctx, duk_h
*/
#define DUK_ACT_FLAG_STRICT (1 << 0) /* function executes in strict mode */
-#define DUK_ACT_FLAG_TAILCALLED (1 << 1) /* activation has tailcalled one or more times */
+#define DUK_ACT_FLAG_TAILCALLED (1 << 1) /* activation has tail called one or more times */
#define DUK_ACT_FLAG_CONSTRUCT (1 << 2) /* function executes as a constructor (called via "new") */
#define DUK_ACT_FLAG_PREVENT_YIELD (1 << 3) /* activation prevents yield (native call or "new") */
#define DUK_ACT_FLAG_DIRECT_EVAL (1 << 4) /* activation is a direct eval call */
@@ -8873,6 +9246,13 @@ DUK_INTERNAL_DECL void duk_hbufferobject_validated_write(duk_context *ctx, duk_h
* diagnose behavior so it's worth checking even when the check is not 100%.
*/
+#if defined(DUK_USE_PREFER_SIZE)
+#define DUK_ASSERT_CTX_VSSIZE(ctx) /*nop*/
+#else
+#define DUK_ASSERT_CTX_VSSIZE(ctx) \
+ DUK_ASSERT((duk_size_t) (((duk_hthread *) (ctx))->valstack_end - ((duk_hthread *) (ctx))->valstack) == \
+ ((duk_hthread *) (ctx))->valstack_size)
+#endif
#define DUK_ASSERT_CTX_VALID(ctx) do { \
DUK_ASSERT((ctx) != NULL); \
DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) (ctx)) == DUK_HTYPE_OBJECT); \
@@ -8883,6 +9263,8 @@ DUK_INTERNAL_DECL void duk_hbufferobject_validated_write(duk_context *ctx, duk_h
DUK_ASSERT(((duk_hthread *) (ctx))->valstack_end >= ((duk_hthread *) (ctx))->valstack); \
DUK_ASSERT(((duk_hthread *) (ctx))->valstack_top >= ((duk_hthread *) (ctx))->valstack); \
DUK_ASSERT(((duk_hthread *) (ctx))->valstack_top >= ((duk_hthread *) (ctx))->valstack_bottom); \
+ DUK_ASSERT(((duk_hthread *) (ctx))->valstack_end >= ((duk_hthread *) (ctx))->valstack_top); \
+ DUK_ASSERT_CTX_VSSIZE((ctx)); \
} while (0)
/*
@@ -8906,11 +9288,11 @@ struct duk_activation {
duk_hobject *prev_caller;
#endif
- duk_small_uint_t flags;
- duk_uint32_t pc; /* next instruction to execute */
+ duk_instr_t *curr_pc; /* next instruction to execute (points to 'func' bytecode, stable pointer), NULL for native calls */
#if defined(DUK_USE_DEBUGGER_SUPPORT)
duk_uint32_t prev_line; /* needed for stepping */
#endif
+ duk_small_uint_t flags;
/* idx_bottom and idx_retval are only used for book-keeping of
* Ecmascript-initiated calls, to allow returning to an Ecmascript
@@ -8949,56 +9331,71 @@ struct duk_activation {
struct duk_catcher {
duk_hstring *h_varname; /* borrowed reference to catch variable name (or NULL if none) */
/* (reference is valid as long activation exists) */
+ duk_instr_t *pc_base; /* resume execution from pc_base or pc_base+1 (points to 'func' bytecode, stable pointer) */
duk_size_t callstack_index; /* callstack index of related activation */
duk_size_t idx_base; /* idx_base and idx_base+1 get completion value and type */
- duk_uint32_t pc_base; /* resume execution from pc_base or pc_base+1 */
duk_uint32_t flags; /* type and control flags, label number */
};
struct duk_hthread {
- /* shared object part */
+ /* Shared object part */
duk_hobject obj;
- /* backpointers */
+ /* Pointer to bytecode executor's 'curr_pc' variable. Used to copy
+ * the current PC back into the topmost activation when activation
+ * state is about to change (or "syncing" is otherwise needed). This
+ * is rather awkward but important for performance, see execution.rst.
+ */
+ duk_instr_t **ptr_curr_pc;
+
+ /* Backpointers. */
duk_heap *heap;
- /* current strictness flag: affects API calls */
+ /* Current strictness flag: affects API calls. */
duk_uint8_t strict;
+
+ /* Thread state. */
duk_uint8_t state;
duk_uint8_t unused1;
duk_uint8_t unused2;
- /* sanity limits */
+ /* Sanity limits for stack sizes. */
duk_size_t valstack_max;
duk_size_t callstack_max;
duk_size_t catchstack_max;
- /* XXX: valstack, callstack, and catchstack are currently assumed
+ /* XXX: Valstack, callstack, and catchstack are currently assumed
* to have non-NULL pointers. Relaxing this would not lead to big
* benefits (except perhaps for terminated threads).
*/
- /* value stack: these are expressed as pointers for faster stack manipulation */
+ /* Value stack: these are expressed as pointers for faster stack manipulation.
+ * [valstack,valstack_top[ is GC-reachable, [valstack_top,valstack_end[ is
+ * not GC-reachable but kept initialized as 'undefined'.
+ */
duk_tval *valstack; /* start of valstack allocation */
duk_tval *valstack_end; /* end of valstack allocation (exclusive) */
duk_tval *valstack_bottom; /* bottom of current frame */
duk_tval *valstack_top; /* top of current frame (exclusive) */
+#if !defined(DUK_USE_PREFER_SIZE)
+ duk_size_t valstack_size; /* cached: valstack_end - valstack (in entries, not bytes) */
+#endif
- /* call stack */
+ /* Call stack. [0,callstack_top[ is GC reachable. */
duk_activation *callstack;
duk_size_t callstack_size; /* allocation size */
duk_size_t callstack_top; /* next to use, highest used is top - 1 */
duk_size_t callstack_preventcount; /* number of activation records in callstack preventing a yield */
- /* catch stack */
+ /* Catch stack. [0,catchstack_top[ is GC reachable. */
duk_catcher *catchstack;
duk_size_t catchstack_size; /* allocation size */
duk_size_t catchstack_top; /* next to use, highest used is top - 1 */
- /* yield/resume book-keeping */
+ /* Yield/resume book-keeping. */
duk_hthread *resumer; /* who resumed us (if any) */
- /* current compiler state (if any), used for augmenting SyntaxErrors */
+ /* Current compiler state (if any), used for augmenting SyntaxErrors. */
duk_compiler_ctx *compile_ctx;
#if defined(DUK_USE_INTERRUPT_COUNTER)
@@ -9022,7 +9419,7 @@ struct duk_hthread {
*/
duk_hobject *builtins[DUK_NUM_BUILTINS];
- /* convenience copies from heap/vm for faster access */
+ /* Convenience copies from heap/vm for faster access. */
#if defined(DUK_USE_HEAPPTR16)
duk_uint16_t *strs16;
#else
@@ -9051,6 +9448,13 @@ DUK_INTERNAL_DECL void *duk_hthread_get_valstack_ptr(duk_heap *heap, void *ud);
DUK_INTERNAL_DECL void *duk_hthread_get_callstack_ptr(duk_heap *heap, void *ud); /* indirect allocs */
DUK_INTERNAL_DECL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud); /* indirect allocs */
+#if defined(DUK_USE_DEBUGGER_SUPPORT)
+DUK_INTERNAL_DECL duk_uint_fast32_t duk_hthread_get_act_curr_pc(duk_hthread *thr, duk_activation *act);
+#endif
+DUK_INTERNAL_DECL duk_uint_fast32_t duk_hthread_get_act_prev_pc(duk_hthread *thr, duk_activation *act);
+DUK_INTERNAL_DECL void duk_hthread_sync_currpc(duk_hthread *thr);
+DUK_INTERNAL_DECL void duk_hthread_sync_and_null_currpc(duk_hthread *thr);
+
#endif /* DUK_HTHREAD_H_INCLUDED */
#line 1 "duk_hbuffer.h"
/*
@@ -9069,17 +9473,23 @@ DUK_INTERNAL_DECL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud)
/*
* Flags
+ *
+ * Fixed buffer: 0
+ * Dynamic buffer: DUK_HBUFFER_FLAG_DYNAMIC
+ * External buffer: DUK_HBUFFER_FLAG_DYNAMIC | DUK_HBUFFER_FLAG_EXTERNAL
*/
-#define DUK_HBUFFER_FLAG_DYNAMIC DUK_HEAPHDR_USER_FLAG(0) /* buffer is resizable */
+#define DUK_HBUFFER_FLAG_DYNAMIC DUK_HEAPHDR_USER_FLAG(0) /* buffer is behind a pointer, dynamic or external */
+#define DUK_HBUFFER_FLAG_EXTERNAL DUK_HEAPHDR_USER_FLAG(1) /* buffer pointer is to an externally allocated buffer */
#define DUK_HBUFFER_HAS_DYNAMIC(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC)
+#define DUK_HBUFFER_HAS_EXTERNAL(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL)
#define DUK_HBUFFER_SET_DYNAMIC(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC)
+#define DUK_HBUFFER_SET_EXTERNAL(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL)
#define DUK_HBUFFER_CLEAR_DYNAMIC(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC)
-
-#define DUK_HBUFFER_FIXED_GET_DATA_PTR(heap,x) ((duk_uint8_t *) (((duk_hbuffer_fixed *) (x)) + 1))
+#define DUK_HBUFFER_CLEAR_EXTERNAL(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL)
/*
* Misc defines
@@ -9140,6 +9550,11 @@ DUK_INTERNAL_DECL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud)
#define DUK_HBUFFER_DYNAMIC_ADD_SIZE(x,dv) DUK_HBUFFER_ADD_SIZE((duk_hbuffer *) (x), (dv))
#define DUK_HBUFFER_DYNAMIC_SUB_SIZE(x,dv) DUK_HBUFFER_SUB_SIZE((duk_hbuffer *) (x), (dv))
+#define DUK_HBUFFER_EXTERNAL_GET_SIZE(x) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) (x))
+#define DUK_HBUFFER_EXTERNAL_SET_SIZE(x,v) DUK_HBUFFER_SET_SIZE((duk_hbuffer *) (x), (v))
+
+#define DUK_HBUFFER_FIXED_GET_DATA_PTR(heap,x) ((duk_uint8_t *) (((duk_hbuffer_fixed *) (x)) + 1))
+
#if defined(DUK_USE_HEAPPTR16)
#define DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap,x) \
((void *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, ((duk_heaphdr *) (x))->h_extra16))
@@ -9159,19 +9574,58 @@ DUK_INTERNAL_DECL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud)
} while (0)
#endif
-/* Gets the actual buffer contents which matches the current allocation size
- * (may be NULL for zero size dynamic buffer).
+/* No pointer compression because pointer is potentially outside of
+ * Duktape heap.
+ */
+#if defined(DUK_USE_HEAPPTR16)
+#define DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap,x) \
+ ((void *) (x)->curr_alloc)
+#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap,x,v) do { \
+ (x)->curr_alloc = (void *) (v); \
+ } while (0)
+#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR_NULL(heap,x) do { \
+ (x)->curr_alloc = (void *) NULL; \
+ } while (0)
+#else
+#define DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap,x) \
+ ((void *) (x)->curr_alloc)
+#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap,x,v) do { \
+ (x)->curr_alloc = (void *) (v); \
+ } while (0)
+#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR_NULL(heap,x) do { \
+ (x)->curr_alloc = (void *) NULL; \
+ } while (0)
+#endif
+
+/* Get a pointer to the current buffer contents (matching current allocation
+ * size). May be NULL for zero size dynamic/external buffer.
+ */
+#if defined(DUK_USE_HEAPPTR16)
+#define DUK_HBUFFER_GET_DATA_PTR(heap,x) ( \
+ DUK_HBUFFER_HAS_DYNAMIC((x)) ? \
+ ( \
+ DUK_HBUFFER_HAS_EXTERNAL((x)) ? \
+ DUK_HBUFFER_EXTERNAL_GET_DATA_PTR((heap), (duk_hbuffer_external *) (x)) : \
+ DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((heap), (duk_hbuffer_dynamic *) (x)) \
+ ) : \
+ DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), (duk_hbuffer_fixed *) (x)) \
+ )
+#else
+/* Without heap pointer compression duk_hbuffer_dynamic and duk_hbuffer_external
+ * have the same layout so checking for fixed vs. dynamic (or external) is enough.
*/
#define DUK_HBUFFER_GET_DATA_PTR(heap,x) ( \
DUK_HBUFFER_HAS_DYNAMIC((x)) ? \
DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((heap), (duk_hbuffer_dynamic *) (x)) : \
DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), (duk_hbuffer_fixed *) (x)) \
)
+#endif
/*
* Structs
*/
+/* Shared prefix for all buffer types. */
struct duk_hbuffer {
duk_heaphdr hdr;
@@ -9199,6 +9653,11 @@ struct duk_hbuffer {
* - a "void *" pointing to the current allocation
* - a duk_size_t indicating the full allocated size (always >= 'size')
*
+ * If DUK_HBUFFER_FLAG_EXTERNAL is set, the buffer has been allocated
+ * by user code, so that Duktape won't be able to resize it and won't
+ * free it. This allows buffers to point to e.g. an externally
+ * allocated structure such as a frame buffer.
+ *
* Unlike strings, no terminator byte (NUL) is guaranteed after the
* data. This would be convenient, but would pad aligned user buffers
* unnecessarily upwards in size. For instance, if user code requested
@@ -9207,6 +9666,9 @@ struct duk_hbuffer {
*/
};
+/* Fixed buffer; data follows struct, with proper alignment guaranteed by
+ * struct size.
+ */
#if (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_MSVC_PRAGMA)
#pragma pack(push, 8)
#endif
@@ -9260,6 +9722,10 @@ __attribute__ ((aligned (8)))
#pragma pack(pop)
#endif
+/* Dynamic buffer with 'curr_alloc' pointing to a dynamic area allocated using
+ * heap allocation primitives. Also used for external buffers when low memory
+ * options are not used.
+ */
struct duk_hbuffer_dynamic {
duk_heaphdr hdr;
@@ -9285,11 +9751,30 @@ struct duk_hbuffer_dynamic {
*/
};
+/* External buffer with 'curr_alloc' managed by user code and pointing to an
+ * arbitrary address. When heap pointer compression is not used, this struct
+ * has the same layout as duk_hbuffer_dynamic.
+ */
+struct duk_hbuffer_external {
+ duk_heaphdr hdr;
+
+#if defined(DUK_USE_BUFLEN16)
+ /* Stored in duk_heaphdr unused flags. */
+#else
+ duk_size_t size;
+#endif
+
+ /* Cannot be compressed as a heap pointer because may point to
+ * an arbitrary address.
+ */
+ void *curr_alloc; /* may be NULL if alloc_size == 0 */
+};
+
/*
* Prototypes
*/
-DUK_INTERNAL_DECL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags);
+DUK_INTERNAL_DECL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags, void **out_bufdata);
DUK_INTERNAL_DECL void *duk_hbuffer_get_dynalloc_ptr(duk_heap *heap, void *ud); /* indirect allocs */
/* dynamic buffer ops */
@@ -9351,13 +9836,13 @@ DUK_INTERNAL_DECL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic *
*/
#define DUK_LJ_TYPE_UNKNOWN 0 /* unused */
-#define DUK_LJ_TYPE_RETURN 1 /* value1 -> return value */
-#define DUK_LJ_TYPE_THROW 2 /* value1 -> error object */
-#define DUK_LJ_TYPE_BREAK 3 /* value1 -> label number */
-#define DUK_LJ_TYPE_CONTINUE 4 /* value1 -> label number */
-#define DUK_LJ_TYPE_YIELD 5 /* value1 -> yield value, iserror -> error / normal */
-#define DUK_LJ_TYPE_RESUME 6 /* value1 -> resume value, value2 -> resumee thread, iserror -> error/normal */
-#define DUK_LJ_TYPE_NORMAL 7 /* pseudo-type to indicate a normal continuation (for 'finally' rethrowing) */
+#define DUK_LJ_TYPE_THROW 1 /* value1 -> error object */
+#define DUK_LJ_TYPE_YIELD 2 /* value1 -> yield value, iserror -> error / normal */
+#define DUK_LJ_TYPE_RESUME 3 /* value1 -> resume value, value2 -> resumee thread, iserror -> error/normal */
+#define DUK_LJ_TYPE_BREAK 4 /* value1 -> label number, pseudo-type to indicate a break continuation (for ENDFIN) */
+#define DUK_LJ_TYPE_CONTINUE 5 /* value1 -> label number, pseudo-type to indicate a continue continuation (for ENDFIN) */
+#define DUK_LJ_TYPE_RETURN 6 /* value1 -> return value, pseudo-type to indicate a return continuation (for ENDFIN) */
+#define DUK_LJ_TYPE_NORMAL 7 /* no value, pseudo-type to indicate a normal continuation (for ENDFIN) */
/*
* Mark-and-sweep flags
@@ -9392,31 +9877,6 @@ DUK_INTERNAL_DECL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic *
* Other heap related defines
*/
-/* Maximum duk_handle_call / duk_handle_safe_call depth. Note that this
- * does not limit bytecode executor internal call depth at all (e.g.
- * for Ecmascript-to-Ecmascript calls, thread yields/resumes, etc).
- * There is a separate callstack depth limit for threads.
- */
-
-#if defined(DUK_USE_DEEP_C_STACK)
-#define DUK_HEAP_DEFAULT_CALL_RECURSION_LIMIT 1000 /* assuming 0.5 kB between calls, about 500kB of stack */
-#else
-#define DUK_HEAP_DEFAULT_CALL_RECURSION_LIMIT 60 /* assuming 0.5 kB between calls, about 30kB of stack */
-#endif
-
-/* Mark-and-sweep C recursion depth for marking phase; if reached,
- * mark object as a TEMPROOT and use multi-pass marking.
- */
-#if defined(DUK_USE_MARK_AND_SWEEP)
-#if defined(DUK_USE_GC_TORTURE)
-#define DUK_HEAP_MARK_AND_SWEEP_RECURSION_LIMIT 3
-#elif defined(DUK_USE_DEEP_C_STACK)
-#define DUK_HEAP_MARK_AND_SWEEP_RECURSION_LIMIT 256
-#else
-#define DUK_HEAP_MARK_AND_SWEEP_RECURSION_LIMIT 32
-#endif
-#endif
-
/* Mark-and-sweep interval is relative to combined count of objects and
* strings kept in the heap during the latest mark-and-sweep pass.
* Fixed point .8 multiplier and .0 adder. Trigger count (interval) is
@@ -9758,6 +10218,7 @@ struct duk_heap {
duk_bool_t dbg_processing; /* currently processing messages or breakpoints: don't enter message processing recursively (e.g. no breakpoints when processing debugger eval) */
duk_bool_t dbg_paused; /* currently paused: talk with debug client until step/resume */
duk_bool_t dbg_state_dirty; /* resend state next time executor is about to run */
+ duk_bool_t dbg_force_restart; /* force executor restart to recheck breakpoints; used to handle function returns (see GH-303) */
duk_small_uint_t dbg_step_type; /* step type: none, step into, step over, step out */
duk_hthread *dbg_step_thread; /* borrowed; NULL if no step state (NULLed in unwind) */
duk_size_t dbg_step_csindex; /* callstack index */
@@ -9838,7 +10299,9 @@ DUK_INTERNAL_DECL duk_hstring *duk_heap_string_lookup_u32(duk_heap *heap, duk_ui
#endif
DUK_INTERNAL_DECL duk_hstring *duk_heap_string_intern_u32(duk_heap *heap, duk_uint32_t val);
DUK_INTERNAL_DECL duk_hstring *duk_heap_string_intern_u32_checked(duk_hthread *thr, duk_uint32_t val);
+#if defined(DUK_USE_REFERENCE_COUNTING)
DUK_INTERNAL_DECL void duk_heap_string_remove(duk_heap *heap, duk_hstring *h);
+#endif
#if defined(DUK_USE_MARK_AND_SWEEP) && defined(DUK_USE_MS_STRINGTABLE_RESIZE)
DUK_INTERNAL_DECL void duk_heap_force_strtab_resize(duk_heap *heap);
#endif
@@ -9917,6 +10380,7 @@ DUK_INTERNAL_DECL duk_uint32_t duk_heap_hashstring(duk_heap *heap, const duk_uin
#define DUK_DBG_CMD_PRINT 0x02
#define DUK_DBG_CMD_ALERT 0x03
#define DUK_DBG_CMD_LOG 0x04
+#define DUK_DBG_CMD_THROW 0x05
/* Initiated by debug client */
#define DUK_DBG_CMD_BASICINFO 0x10
@@ -9984,7 +10448,9 @@ DUK_INTERNAL_DECL void duk_debug_write_eom(duk_hthread *thr);
DUK_INTERNAL duk_uint_fast32_t duk_debug_curr_line(duk_hthread *thr);
DUK_INTERNAL void duk_debug_send_status(duk_hthread *thr);
+DUK_INTERNAL_DECL void duk_debug_send_throw(duk_hthread *thr, duk_bool_t fatal);
+DUK_INTERNAL_DECL void duk_debug_halt_execution(duk_hthread *thr, duk_bool_t use_prev_pc);
DUK_INTERNAL_DECL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t no_block);
DUK_INTERNAL_DECL duk_small_int_t duk_debug_add_breakpoint(duk_hthread *thr, duk_hstring *filename, duk_uint32_t line);
@@ -10365,9 +10831,9 @@ DUK_INTERNAL_DECL duk_bool_t duk_fb_is_full(duk_fixedbuffer *fb);
#if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_PACKED_TVAL)
#define DUK_ASSERT_DOUBLE_IS_NORMALIZED(dval) do { \
- duk_double_union assert_tmp_du; \
- assert_tmp_du.d = (dval); \
- DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&assert_tmp_du)); \
+ duk_double_union duk__assert_tmp_du; \
+ duk__assert_tmp_du.d = (dval); \
+ DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&duk__assert_tmp_du)); \
} while (0)
#else
#define DUK_ASSERT_DOUBLE_IS_NORMALIZED(dval) /* nop */
@@ -10666,6 +11132,13 @@ extern const duk_uint8_t duk_unicode_idp_m_ids_noabmp[348];
extern const duk_uint8_t duk_unicode_caseconv_uc[1288];
extern const duk_uint8_t duk_unicode_caseconv_lc[616];
+/* FIXME: CONDITIONAL */
+/*
+ * Automatically generated by extract_caseconv.py, do not edit!
+ */
+
+extern const duk_uint16_t duk_unicode_re_canon_lookup[65536];
+
/*
* Extern
*/
@@ -10712,15 +11185,6 @@ DUK_INTERNAL_DECL duk_small_int_t duk_unicode_re_is_wordchar(duk_codepoint_t cp)
#ifndef DUK_JSON_H_INCLUDED
#define DUK_JSON_H_INCLUDED
-/* Object/array recursion limit (to protect C stack) */
-#if defined(DUK_USE_DEEP_C_STACK)
-#define DUK_JSON_ENC_RECURSION_LIMIT 1000
-#define DUK_JSON_DEC_RECURSION_LIMIT 1000
-#else
-#define DUK_JSON_ENC_RECURSION_LIMIT 100
-#define DUK_JSON_DEC_RECURSION_LIMIT 100
-#endif
-
/* Encoding/decoding flags */
#define DUK_JSON_FLAG_ASCII_ONLY (1 << 0) /* escape any non-ASCII characters */
#define DUK_JSON_FLAG_AVOID_KEY_QUOTES (1 << 1) /* avoid key quotes when key is an ASCII Identifier */
@@ -10798,7 +11262,7 @@ typedef struct {
#define DUK_CALL_FLAG_IGNORE_RECLIMIT (1 << 1) /* duk_handle_call: call ignores C recursion limit (for errhandler calls) */
#define DUK_CALL_FLAG_CONSTRUCTOR_CALL (1 << 2) /* duk_handle_call: constructor call (i.e. called as 'new Foo()') */
#define DUK_CALL_FLAG_IS_RESUME (1 << 3) /* duk_handle_ecma_call_setup: setup for a resume() */
-#define DUK_CALL_FLAG_IS_TAILCALL (1 << 4) /* duk_handle_ecma_call_setup: setup for a tailcall */
+#define DUK_CALL_FLAG_IS_TAILCALL (1 << 4) /* duk_handle_ecma_call_setup: setup for a tail call */
#define DUK_CALL_FLAG_DIRECT_EVAL (1 << 5) /* call is a direct eval call */
/* Flags for duk_js_equals_helper(). */
@@ -11252,7 +11716,7 @@ DUK_INTERNAL const char *duk_str_buffer_too_long = "buffer too long";
DUK_INTERNAL const char *duk_str_sprintf_too_long = "sprintf message too long";
DUK_INTERNAL const char *duk_str_alloc_failed = "alloc failed";
DUK_INTERNAL const char *duk_str_pop_too_many = "attempt to pop too many entries";
-DUK_INTERNAL const char *duk_str_buffer_not_dynamic = "buffer is not dynamic";
+DUK_INTERNAL const char *duk_str_wrong_buffer_type = "wrong buffer type";
DUK_INTERNAL const char *duk_str_failed_to_extend_valstack = "failed to extend valstack";
DUK_INTERNAL const char *duk_str_encode_failed = "encode failed";
DUK_INTERNAL const char *duk_str_decode_failed = "decode failed";
@@ -11866,7 +12330,7 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = {
156,80,0,70,82,113,64,1,89,41,197,0,6,100,39,20,0,29,142,156,80,0,134,50,
98,243,21,53,121,136,160,144,0,22,26,120,24,73,197,0,9,96,167,20,0,41,128,
156,80,0,181,250,113,64,3,1,255,254,0,81,20,100,47,145,216,23,255,240,0,11,
-255,248,0,3,255,252,81,252,0,0,0,0,8,1,220,68,0,129,167,1,26,144,9,165,0,
+255,248,0,3,255,252,81,252,0,0,0,0,8,4,252,68,0,129,167,1,26,144,9,165,0,
26,177,199,197,132,30,147,16,120,86,65,217,80,240,232,164,120,114,80,60,52,
39,32,84,223,192,15,59,30,129,156,115,6,81,160,7,253,40,0,5,81,252,0,1,255,
78,0,84,113,96,128,0,209,69,128,21,87,240,0,7,253,72,1,81,221,66,0,3,69,
@@ -11898,16 +12362,90 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = {
106,0,
};
#ifdef DUK_USE_BUILTIN_INITJS
-DUK_INTERNAL const duk_uint8_t duk_initjs_data[187] = {
-40,102,117,110,99,116,105,111,110,40,100,44,97,41,123,102,117,110,99,116,
-105,111,110,32,98,40,97,44,98,44,99,41,123,79,98,106,101,99,116,46,100,101,
-102,105,110,101,80,114,111,112,101,114,116,121,40,97,44,98,44,123,118,97,
-108,117,101,58,99,44,119,114,105,116,97,98,108,101,58,33,48,44,101,110,117,
-109,101,114,97,98,108,101,58,33,49,44,99,111,110,102,105,103,117,114,97,98,
-108,101,58,33,48,125,41,125,98,40,97,46,76,111,103,103,101,114,44,34,99,
-108,111,103,34,44,110,101,119,32,97,46,76,111,103,103,101,114,40,34,67,34,
-41,41,59,98,40,97,44,34,109,111,100,76,111,97,100,101,100,34,44,123,125,41,
-125,41,40,116,104,105,115,44,68,117,107,116,97,112,101,41,59,10,0,
+DUK_INTERNAL const duk_uint8_t duk_initjs_data[1757] = {
+47,42,10,32,42,32,32,73,110,105,116,32,99,111,100,101,32,102,111,114,32,
+108,101,103,97,99,121,32,99,111,109,112,97,116,105,98,105,108,105,116,121,
+46,10,32,42,10,32,42,32,32,67,111,109,112,97,116,105,98,105,108,105,116,
+121,32,112,114,111,112,101,114,116,105,101,115,32,47,32,119,114,97,112,112,
+101,114,32,102,117,110,99,116,105,111,110,115,32,104,101,114,101,32,97,108,
+108,111,119,32,68,117,107,116,97,112,101,32,116,111,32,114,101,109,97,105,
+110,10,32,42,32,32,99,111,109,112,97,116,105,98,108,101,32,102,111,114,32,
+117,115,101,114,32,99,111,100,101,32,119,104,101,110,32,99,111,114,101,32,
+102,101,97,116,117,114,101,115,32,97,114,101,32,99,104,97,110,103,101,100,
+44,32,119,105,116,104,111,117,116,32,98,117,114,100,101,110,105,110,103,10,
+32,42,32,32,116,104,101,32,109,97,105,110,32,67,32,99,111,100,101,32,119,
+105,116,104,32,99,111,109,112,97,116,105,98,105,108,105,116,121,32,115,116,
+117,102,102,46,10,32,42,10,32,42,32,32,84,104,105,115,32,102,105,108,101,
+32,105,115,32,109,105,110,105,102,105,101,100,32,119,105,116,104,32,85,103,
+108,105,102,121,74,83,32,111,114,32,116,104,101,32,99,108,111,115,117,114,
+101,32,99,111,109,112,105,108,101,114,46,32,32,66,111,116,104,32,119,105,
+108,108,10,32,42,32,32,114,101,110,97,109,101,32,118,97,114,105,97,98,108,
+101,115,44,32,114,101,109,111,118,101,32,99,111,109,109,101,110,116,115,44,
+32,97,110,100,32,97,114,101,32,99,108,101,118,101,114,32,101,110,111,117,
+103,104,32,116,111,32,100,114,111,112,32,97,110,121,10,32,42,32,32,34,105,
+102,32,40,102,97,108,115,101,41,32,123,32,46,46,46,32,125,34,32,98,108,111,
+99,107,115,32,97,108,116,111,103,101,116,104,101,114,44,32,115,111,32,116,
+104,97,116,39,115,32,97,110,32,101,102,102,101,99,116,105,118,101,32,119,
+97,121,32,116,111,10,32,42,32,32,100,105,115,97,98,108,101,32,99,117,114,
+114,101,110,116,108,121,32,117,110,110,101,101,100,101,100,32,99,111,100,
+101,46,10,32,42,47,10,10,40,102,117,110,99,116,105,111,110,40,71,44,32,68,
+41,32,123,10,32,32,32,32,39,117,115,101,32,115,116,114,105,99,116,39,59,10,
+10,32,32,32,32,102,117,110,99,116,105,111,110,32,100,101,102,40,111,98,106,
+101,99,116,44,32,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32,
+32,32,32,32,32,32,32,79,98,106,101,99,116,46,100,101,102,105,110,101,80,
+114,111,112,101,114,116,121,40,111,98,106,101,99,116,44,32,110,97,109,101,
+44,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,118,97,108,117,101,58,32,
+118,97,108,117,101,44,10,32,32,32,32,32,32,32,32,32,32,32,32,119,114,105,
+116,97,98,108,101,58,32,116,114,117,101,44,10,32,32,32,32,32,32,32,32,32,
+32,32,32,101,110,117,109,101,114,97,98,108,101,58,32,102,97,108,115,101,44,
+10,32,32,32,32,32,32,32,32,32,32,32,32,99,111,110,102,105,103,117,114,97,
+98,108,101,58,32,116,114,117,101,10,32,32,32,32,32,32,32,32,125,41,59,10,
+32,32,32,32,125,10,10,32,32,32,32,102,117,110,99,116,105,111,110,32,100,
+101,102,68,40,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32,32,
+32,32,32,32,32,32,100,101,102,40,68,44,32,110,97,109,101,44,32,118,97,108,
+117,101,41,59,10,32,32,32,32,125,10,10,32,32,32,32,47,47,32,67,111,109,112,
+97,116,105,98,105,108,105,116,121,32,102,111,114,32,39,99,111,110,115,111,
+108,101,46,108,111,103,39,46,10,32,32,32,32,105,102,32,40,102,97,108,115,
+101,41,32,123,10,32,32,32,32,32,32,32,32,99,111,110,115,111,108,101,32,61,
+32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,108,111,103,58,32,102,117,
+110,99,116,105,111,110,40,41,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,
+32,32,32,32,112,114,105,110,116,40,65,114,114,97,121,46,112,114,111,116,
+111,116,121,112,101,46,106,111,105,110,46,99,97,108,108,40,97,114,103,117,
+109,101,110,116,115,44,32,39,32,39,41,41,59,10,32,32,32,32,32,32,32,32,32,
+32,32,32,125,10,32,32,32,32,32,32,32,32,125,59,10,32,32,32,32,125,10,10,32,
+32,32,32,47,47,32,68,117,107,116,97,112,101,46,108,105,110,101,40,41,32,
+119,97,115,32,114,101,109,111,118,101,100,32,105,110,32,68,117,107,116,97,
+112,101,32,48,46,49,49,46,48,44,32,104,101,114,101,39,115,32,97,110,32,101,
+120,97,109,112,108,101,10,32,32,32,32,47,47,32,114,101,112,108,97,99,101,
+109,101,110,116,32,117,115,101,114,32,99,111,100,101,32,99,111,117,108,100,
+32,117,115,101,46,10,32,32,32,32,105,102,32,40,102,97,108,115,101,41,32,
+123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,108,105,110,101,
+39,44,32,102,117,110,99,116,105,111,110,32,40,41,32,123,10,32,32,32,32,32,
+32,32,32,32,32,32,32,39,117,115,101,32,100,117,107,32,110,111,116,97,105,
+108,39,59,10,10,32,32,32,32,32,32,32,32,32,32,32,32,47,42,32,84,97,105,108,
+32,99,97,108,108,115,32,97,114,101,32,112,114,101,118,101,110,116,101,100,
+32,116,111,32,101,110,115,117,114,101,32,99,97,108,108,105,110,103,32,97,
+99,116,105,118,97,116,105,111,110,32,101,120,105,115,116,115,46,10,32,32,
+32,32,32,32,32,32,32,32,32,32,32,42,32,67,97,108,108,32,115,116,97,99,107,
+32,105,110,100,105,99,101,115,58,32,45,49,32,61,32,68,117,107,116,97,112,
+101,46,97,99,116,44,32,45,50,32,61,32,103,101,116,67,117,114,114,101,110,
+116,76,105,110,101,44,32,45,51,32,61,32,99,97,108,108,101,114,10,32,32,32,
+32,32,32,32,32,32,32,32,32,32,42,47,10,10,32,32,32,32,32,32,32,32,32,32,32,
+32,114,101,116,117,114,110,32,40,68,117,107,116,97,112,101,46,97,99,116,40,
+45,51,41,32,124,124,32,123,125,41,46,108,105,110,101,78,117,109,98,101,114,
+59,10,32,32,32,32,32,32,32,32,125,41,59,10,32,32,32,32,125,10,10,32,32,32,
+32,47,47,32,76,111,103,103,101,114,32,111,98,106,101,99,116,32,102,111,114,
+32,67,32,99,111,100,101,32,112,114,111,118,105,100,101,100,32,98,121,32,
+105,110,105,116,32,99,111,100,101,32,110,111,119,46,10,32,32,32,32,105,102,
+32,40,116,114,117,101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40,
+68,46,76,111,103,103,101,114,44,32,39,99,108,111,103,39,44,32,110,101,119,
+32,68,46,76,111,103,103,101,114,40,39,67,39,41,41,59,10,32,32,32,32,125,10,
+10,32,32,32,32,47,47,32,84,114,97,99,107,105,110,103,32,116,97,98,108,101,
+32,102,111,114,32,67,111,109,109,111,110,74,83,32,109,111,100,117,108,101,
+32,108,111,97,100,105,110,103,46,10,32,32,32,32,105,102,32,40,116,114,117,
+101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,109,
+111,100,76,111,97,100,101,100,39,44,32,123,125,41,59,10,32,32,32,32,125,10,
+125,41,40,116,104,105,115,44,32,68,117,107,116,97,112,101,41,59,10,0,
};
#endif /* DUK_USE_BUILTIN_INITJS */
#elif defined(DUK_USE_DOUBLE_BE)
@@ -12252,7 +12790,7 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = {
80,0,70,82,113,64,1,89,41,197,0,6,100,39,20,0,29,142,156,80,0,134,50,98,
243,21,53,121,136,160,144,0,22,26,120,24,73,197,0,9,96,167,20,0,41,128,156,
80,0,181,250,113,64,3,1,255,254,0,81,20,100,47,145,216,23,255,240,0,11,255,
-248,0,3,255,252,81,252,4,12,65,216,0,0,0,0,0,129,167,1,26,144,9,165,0,26,
+248,0,3,255,252,81,252,4,12,68,248,0,0,0,0,0,129,167,1,26,144,9,165,0,26,
177,199,197,132,30,147,16,120,86,65,217,80,240,232,164,120,114,80,60,52,39,
32,84,223,192,15,59,30,129,156,115,6,81,160,7,253,40,0,5,81,252,0,1,255,78,
0,84,113,96,128,0,209,69,128,21,87,240,0,7,253,72,1,81,221,66,0,3,69,117,0,
@@ -12283,16 +12821,90 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = {
157,85,98,112,80,137,241,66,128,0,166,213,33,53,24,66,121,106,0,
};
#ifdef DUK_USE_BUILTIN_INITJS
-DUK_INTERNAL const duk_uint8_t duk_initjs_data[187] = {
-40,102,117,110,99,116,105,111,110,40,100,44,97,41,123,102,117,110,99,116,
-105,111,110,32,98,40,97,44,98,44,99,41,123,79,98,106,101,99,116,46,100,101,
-102,105,110,101,80,114,111,112,101,114,116,121,40,97,44,98,44,123,118,97,
-108,117,101,58,99,44,119,114,105,116,97,98,108,101,58,33,48,44,101,110,117,
-109,101,114,97,98,108,101,58,33,49,44,99,111,110,102,105,103,117,114,97,98,
-108,101,58,33,48,125,41,125,98,40,97,46,76,111,103,103,101,114,44,34,99,
-108,111,103,34,44,110,101,119,32,97,46,76,111,103,103,101,114,40,34,67,34,
-41,41,59,98,40,97,44,34,109,111,100,76,111,97,100,101,100,34,44,123,125,41,
-125,41,40,116,104,105,115,44,68,117,107,116,97,112,101,41,59,10,0,
+DUK_INTERNAL const duk_uint8_t duk_initjs_data[1757] = {
+47,42,10,32,42,32,32,73,110,105,116,32,99,111,100,101,32,102,111,114,32,
+108,101,103,97,99,121,32,99,111,109,112,97,116,105,98,105,108,105,116,121,
+46,10,32,42,10,32,42,32,32,67,111,109,112,97,116,105,98,105,108,105,116,
+121,32,112,114,111,112,101,114,116,105,101,115,32,47,32,119,114,97,112,112,
+101,114,32,102,117,110,99,116,105,111,110,115,32,104,101,114,101,32,97,108,
+108,111,119,32,68,117,107,116,97,112,101,32,116,111,32,114,101,109,97,105,
+110,10,32,42,32,32,99,111,109,112,97,116,105,98,108,101,32,102,111,114,32,
+117,115,101,114,32,99,111,100,101,32,119,104,101,110,32,99,111,114,101,32,
+102,101,97,116,117,114,101,115,32,97,114,101,32,99,104,97,110,103,101,100,
+44,32,119,105,116,104,111,117,116,32,98,117,114,100,101,110,105,110,103,10,
+32,42,32,32,116,104,101,32,109,97,105,110,32,67,32,99,111,100,101,32,119,
+105,116,104,32,99,111,109,112,97,116,105,98,105,108,105,116,121,32,115,116,
+117,102,102,46,10,32,42,10,32,42,32,32,84,104,105,115,32,102,105,108,101,
+32,105,115,32,109,105,110,105,102,105,101,100,32,119,105,116,104,32,85,103,
+108,105,102,121,74,83,32,111,114,32,116,104,101,32,99,108,111,115,117,114,
+101,32,99,111,109,112,105,108,101,114,46,32,32,66,111,116,104,32,119,105,
+108,108,10,32,42,32,32,114,101,110,97,109,101,32,118,97,114,105,97,98,108,
+101,115,44,32,114,101,109,111,118,101,32,99,111,109,109,101,110,116,115,44,
+32,97,110,100,32,97,114,101,32,99,108,101,118,101,114,32,101,110,111,117,
+103,104,32,116,111,32,100,114,111,112,32,97,110,121,10,32,42,32,32,34,105,
+102,32,40,102,97,108,115,101,41,32,123,32,46,46,46,32,125,34,32,98,108,111,
+99,107,115,32,97,108,116,111,103,101,116,104,101,114,44,32,115,111,32,116,
+104,97,116,39,115,32,97,110,32,101,102,102,101,99,116,105,118,101,32,119,
+97,121,32,116,111,10,32,42,32,32,100,105,115,97,98,108,101,32,99,117,114,
+114,101,110,116,108,121,32,117,110,110,101,101,100,101,100,32,99,111,100,
+101,46,10,32,42,47,10,10,40,102,117,110,99,116,105,111,110,40,71,44,32,68,
+41,32,123,10,32,32,32,32,39,117,115,101,32,115,116,114,105,99,116,39,59,10,
+10,32,32,32,32,102,117,110,99,116,105,111,110,32,100,101,102,40,111,98,106,
+101,99,116,44,32,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32,
+32,32,32,32,32,32,32,79,98,106,101,99,116,46,100,101,102,105,110,101,80,
+114,111,112,101,114,116,121,40,111,98,106,101,99,116,44,32,110,97,109,101,
+44,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,118,97,108,117,101,58,32,
+118,97,108,117,101,44,10,32,32,32,32,32,32,32,32,32,32,32,32,119,114,105,
+116,97,98,108,101,58,32,116,114,117,101,44,10,32,32,32,32,32,32,32,32,32,
+32,32,32,101,110,117,109,101,114,97,98,108,101,58,32,102,97,108,115,101,44,
+10,32,32,32,32,32,32,32,32,32,32,32,32,99,111,110,102,105,103,117,114,97,
+98,108,101,58,32,116,114,117,101,10,32,32,32,32,32,32,32,32,125,41,59,10,
+32,32,32,32,125,10,10,32,32,32,32,102,117,110,99,116,105,111,110,32,100,
+101,102,68,40,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32,32,
+32,32,32,32,32,32,100,101,102,40,68,44,32,110,97,109,101,44,32,118,97,108,
+117,101,41,59,10,32,32,32,32,125,10,10,32,32,32,32,47,47,32,67,111,109,112,
+97,116,105,98,105,108,105,116,121,32,102,111,114,32,39,99,111,110,115,111,
+108,101,46,108,111,103,39,46,10,32,32,32,32,105,102,32,40,102,97,108,115,
+101,41,32,123,10,32,32,32,32,32,32,32,32,99,111,110,115,111,108,101,32,61,
+32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,108,111,103,58,32,102,117,
+110,99,116,105,111,110,40,41,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,
+32,32,32,32,112,114,105,110,116,40,65,114,114,97,121,46,112,114,111,116,
+111,116,121,112,101,46,106,111,105,110,46,99,97,108,108,40,97,114,103,117,
+109,101,110,116,115,44,32,39,32,39,41,41,59,10,32,32,32,32,32,32,32,32,32,
+32,32,32,125,10,32,32,32,32,32,32,32,32,125,59,10,32,32,32,32,125,10,10,32,
+32,32,32,47,47,32,68,117,107,116,97,112,101,46,108,105,110,101,40,41,32,
+119,97,115,32,114,101,109,111,118,101,100,32,105,110,32,68,117,107,116,97,
+112,101,32,48,46,49,49,46,48,44,32,104,101,114,101,39,115,32,97,110,32,101,
+120,97,109,112,108,101,10,32,32,32,32,47,47,32,114,101,112,108,97,99,101,
+109,101,110,116,32,117,115,101,114,32,99,111,100,101,32,99,111,117,108,100,
+32,117,115,101,46,10,32,32,32,32,105,102,32,40,102,97,108,115,101,41,32,
+123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,108,105,110,101,
+39,44,32,102,117,110,99,116,105,111,110,32,40,41,32,123,10,32,32,32,32,32,
+32,32,32,32,32,32,32,39,117,115,101,32,100,117,107,32,110,111,116,97,105,
+108,39,59,10,10,32,32,32,32,32,32,32,32,32,32,32,32,47,42,32,84,97,105,108,
+32,99,97,108,108,115,32,97,114,101,32,112,114,101,118,101,110,116,101,100,
+32,116,111,32,101,110,115,117,114,101,32,99,97,108,108,105,110,103,32,97,
+99,116,105,118,97,116,105,111,110,32,101,120,105,115,116,115,46,10,32,32,
+32,32,32,32,32,32,32,32,32,32,32,42,32,67,97,108,108,32,115,116,97,99,107,
+32,105,110,100,105,99,101,115,58,32,45,49,32,61,32,68,117,107,116,97,112,
+101,46,97,99,116,44,32,45,50,32,61,32,103,101,116,67,117,114,114,101,110,
+116,76,105,110,101,44,32,45,51,32,61,32,99,97,108,108,101,114,10,32,32,32,
+32,32,32,32,32,32,32,32,32,32,42,47,10,10,32,32,32,32,32,32,32,32,32,32,32,
+32,114,101,116,117,114,110,32,40,68,117,107,116,97,112,101,46,97,99,116,40,
+45,51,41,32,124,124,32,123,125,41,46,108,105,110,101,78,117,109,98,101,114,
+59,10,32,32,32,32,32,32,32,32,125,41,59,10,32,32,32,32,125,10,10,32,32,32,
+32,47,47,32,76,111,103,103,101,114,32,111,98,106,101,99,116,32,102,111,114,
+32,67,32,99,111,100,101,32,112,114,111,118,105,100,101,100,32,98,121,32,
+105,110,105,116,32,99,111,100,101,32,110,111,119,46,10,32,32,32,32,105,102,
+32,40,116,114,117,101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40,
+68,46,76,111,103,103,101,114,44,32,39,99,108,111,103,39,44,32,110,101,119,
+32,68,46,76,111,103,103,101,114,40,39,67,39,41,41,59,10,32,32,32,32,125,10,
+10,32,32,32,32,47,47,32,84,114,97,99,107,105,110,103,32,116,97,98,108,101,
+32,102,111,114,32,67,111,109,109,111,110,74,83,32,109,111,100,117,108,101,
+32,108,111,97,100,105,110,103,46,10,32,32,32,32,105,102,32,40,116,114,117,
+101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,109,
+111,100,76,111,97,100,101,100,39,44,32,123,125,41,59,10,32,32,32,32,125,10,
+125,41,40,116,104,105,115,44,32,68,117,107,116,97,112,101,41,59,10,0,
};
#endif /* DUK_USE_BUILTIN_INITJS */
#elif defined(DUK_USE_DOUBLE_ME)
@@ -12637,7 +13249,7 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = {
156,80,0,70,82,113,64,1,89,41,197,0,6,100,39,20,0,29,142,156,80,0,134,50,
98,243,21,53,121,136,160,144,0,22,26,120,24,73,197,0,9,96,167,20,0,41,128,
156,80,0,181,250,113,64,3,1,255,254,0,81,20,100,47,145,216,23,255,240,0,11,
-255,248,0,3,255,252,81,252,8,1,220,68,0,0,0,0,0,129,167,1,26,144,9,165,0,
+255,248,0,3,255,252,81,252,8,4,252,68,0,0,0,0,0,129,167,1,26,144,9,165,0,
26,177,199,197,132,30,147,16,120,86,65,217,80,240,232,164,120,114,80,60,52,
39,32,84,223,192,15,59,30,129,156,115,6,81,160,7,253,40,0,5,81,252,0,1,255,
78,0,84,113,96,128,0,209,69,128,21,87,240,0,7,253,72,1,81,221,66,0,3,69,
@@ -12669,16 +13281,90 @@ DUK_INTERNAL const duk_uint8_t duk_builtins_data[1952] = {
106,0,
};
#ifdef DUK_USE_BUILTIN_INITJS
-DUK_INTERNAL const duk_uint8_t duk_initjs_data[187] = {
-40,102,117,110,99,116,105,111,110,40,100,44,97,41,123,102,117,110,99,116,
-105,111,110,32,98,40,97,44,98,44,99,41,123,79,98,106,101,99,116,46,100,101,
-102,105,110,101,80,114,111,112,101,114,116,121,40,97,44,98,44,123,118,97,
-108,117,101,58,99,44,119,114,105,116,97,98,108,101,58,33,48,44,101,110,117,
-109,101,114,97,98,108,101,58,33,49,44,99,111,110,102,105,103,117,114,97,98,
-108,101,58,33,48,125,41,125,98,40,97,46,76,111,103,103,101,114,44,34,99,
-108,111,103,34,44,110,101,119,32,97,46,76,111,103,103,101,114,40,34,67,34,
-41,41,59,98,40,97,44,34,109,111,100,76,111,97,100,101,100,34,44,123,125,41,
-125,41,40,116,104,105,115,44,68,117,107,116,97,112,101,41,59,10,0,
+DUK_INTERNAL const duk_uint8_t duk_initjs_data[1757] = {
+47,42,10,32,42,32,32,73,110,105,116,32,99,111,100,101,32,102,111,114,32,
+108,101,103,97,99,121,32,99,111,109,112,97,116,105,98,105,108,105,116,121,
+46,10,32,42,10,32,42,32,32,67,111,109,112,97,116,105,98,105,108,105,116,
+121,32,112,114,111,112,101,114,116,105,101,115,32,47,32,119,114,97,112,112,
+101,114,32,102,117,110,99,116,105,111,110,115,32,104,101,114,101,32,97,108,
+108,111,119,32,68,117,107,116,97,112,101,32,116,111,32,114,101,109,97,105,
+110,10,32,42,32,32,99,111,109,112,97,116,105,98,108,101,32,102,111,114,32,
+117,115,101,114,32,99,111,100,101,32,119,104,101,110,32,99,111,114,101,32,
+102,101,97,116,117,114,101,115,32,97,114,101,32,99,104,97,110,103,101,100,
+44,32,119,105,116,104,111,117,116,32,98,117,114,100,101,110,105,110,103,10,
+32,42,32,32,116,104,101,32,109,97,105,110,32,67,32,99,111,100,101,32,119,
+105,116,104,32,99,111,109,112,97,116,105,98,105,108,105,116,121,32,115,116,
+117,102,102,46,10,32,42,10,32,42,32,32,84,104,105,115,32,102,105,108,101,
+32,105,115,32,109,105,110,105,102,105,101,100,32,119,105,116,104,32,85,103,
+108,105,102,121,74,83,32,111,114,32,116,104,101,32,99,108,111,115,117,114,
+101,32,99,111,109,112,105,108,101,114,46,32,32,66,111,116,104,32,119,105,
+108,108,10,32,42,32,32,114,101,110,97,109,101,32,118,97,114,105,97,98,108,
+101,115,44,32,114,101,109,111,118,101,32,99,111,109,109,101,110,116,115,44,
+32,97,110,100,32,97,114,101,32,99,108,101,118,101,114,32,101,110,111,117,
+103,104,32,116,111,32,100,114,111,112,32,97,110,121,10,32,42,32,32,34,105,
+102,32,40,102,97,108,115,101,41,32,123,32,46,46,46,32,125,34,32,98,108,111,
+99,107,115,32,97,108,116,111,103,101,116,104,101,114,44,32,115,111,32,116,
+104,97,116,39,115,32,97,110,32,101,102,102,101,99,116,105,118,101,32,119,
+97,121,32,116,111,10,32,42,32,32,100,105,115,97,98,108,101,32,99,117,114,
+114,101,110,116,108,121,32,117,110,110,101,101,100,101,100,32,99,111,100,
+101,46,10,32,42,47,10,10,40,102,117,110,99,116,105,111,110,40,71,44,32,68,
+41,32,123,10,32,32,32,32,39,117,115,101,32,115,116,114,105,99,116,39,59,10,
+10,32,32,32,32,102,117,110,99,116,105,111,110,32,100,101,102,40,111,98,106,
+101,99,116,44,32,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32,
+32,32,32,32,32,32,32,79,98,106,101,99,116,46,100,101,102,105,110,101,80,
+114,111,112,101,114,116,121,40,111,98,106,101,99,116,44,32,110,97,109,101,
+44,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,118,97,108,117,101,58,32,
+118,97,108,117,101,44,10,32,32,32,32,32,32,32,32,32,32,32,32,119,114,105,
+116,97,98,108,101,58,32,116,114,117,101,44,10,32,32,32,32,32,32,32,32,32,
+32,32,32,101,110,117,109,101,114,97,98,108,101,58,32,102,97,108,115,101,44,
+10,32,32,32,32,32,32,32,32,32,32,32,32,99,111,110,102,105,103,117,114,97,
+98,108,101,58,32,116,114,117,101,10,32,32,32,32,32,32,32,32,125,41,59,10,
+32,32,32,32,125,10,10,32,32,32,32,102,117,110,99,116,105,111,110,32,100,
+101,102,68,40,110,97,109,101,44,32,118,97,108,117,101,41,32,123,10,32,32,
+32,32,32,32,32,32,100,101,102,40,68,44,32,110,97,109,101,44,32,118,97,108,
+117,101,41,59,10,32,32,32,32,125,10,10,32,32,32,32,47,47,32,67,111,109,112,
+97,116,105,98,105,108,105,116,121,32,102,111,114,32,39,99,111,110,115,111,
+108,101,46,108,111,103,39,46,10,32,32,32,32,105,102,32,40,102,97,108,115,
+101,41,32,123,10,32,32,32,32,32,32,32,32,99,111,110,115,111,108,101,32,61,
+32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,108,111,103,58,32,102,117,
+110,99,116,105,111,110,40,41,32,123,10,32,32,32,32,32,32,32,32,32,32,32,32,
+32,32,32,32,112,114,105,110,116,40,65,114,114,97,121,46,112,114,111,116,
+111,116,121,112,101,46,106,111,105,110,46,99,97,108,108,40,97,114,103,117,
+109,101,110,116,115,44,32,39,32,39,41,41,59,10,32,32,32,32,32,32,32,32,32,
+32,32,32,125,10,32,32,32,32,32,32,32,32,125,59,10,32,32,32,32,125,10,10,32,
+32,32,32,47,47,32,68,117,107,116,97,112,101,46,108,105,110,101,40,41,32,
+119,97,115,32,114,101,109,111,118,101,100,32,105,110,32,68,117,107,116,97,
+112,101,32,48,46,49,49,46,48,44,32,104,101,114,101,39,115,32,97,110,32,101,
+120,97,109,112,108,101,10,32,32,32,32,47,47,32,114,101,112,108,97,99,101,
+109,101,110,116,32,117,115,101,114,32,99,111,100,101,32,99,111,117,108,100,
+32,117,115,101,46,10,32,32,32,32,105,102,32,40,102,97,108,115,101,41,32,
+123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,108,105,110,101,
+39,44,32,102,117,110,99,116,105,111,110,32,40,41,32,123,10,32,32,32,32,32,
+32,32,32,32,32,32,32,39,117,115,101,32,100,117,107,32,110,111,116,97,105,
+108,39,59,10,10,32,32,32,32,32,32,32,32,32,32,32,32,47,42,32,84,97,105,108,
+32,99,97,108,108,115,32,97,114,101,32,112,114,101,118,101,110,116,101,100,
+32,116,111,32,101,110,115,117,114,101,32,99,97,108,108,105,110,103,32,97,
+99,116,105,118,97,116,105,111,110,32,101,120,105,115,116,115,46,10,32,32,
+32,32,32,32,32,32,32,32,32,32,32,42,32,67,97,108,108,32,115,116,97,99,107,
+32,105,110,100,105,99,101,115,58,32,45,49,32,61,32,68,117,107,116,97,112,
+101,46,97,99,116,44,32,45,50,32,61,32,103,101,116,67,117,114,114,101,110,
+116,76,105,110,101,44,32,45,51,32,61,32,99,97,108,108,101,114,10,32,32,32,
+32,32,32,32,32,32,32,32,32,32,42,47,10,10,32,32,32,32,32,32,32,32,32,32,32,
+32,114,101,116,117,114,110,32,40,68,117,107,116,97,112,101,46,97,99,116,40,
+45,51,41,32,124,124,32,123,125,41,46,108,105,110,101,78,117,109,98,101,114,
+59,10,32,32,32,32,32,32,32,32,125,41,59,10,32,32,32,32,125,10,10,32,32,32,
+32,47,47,32,76,111,103,103,101,114,32,111,98,106,101,99,116,32,102,111,114,
+32,67,32,99,111,100,101,32,112,114,111,118,105,100,101,100,32,98,121,32,
+105,110,105,116,32,99,111,100,101,32,110,111,119,46,10,32,32,32,32,105,102,
+32,40,116,114,117,101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40,
+68,46,76,111,103,103,101,114,44,32,39,99,108,111,103,39,44,32,110,101,119,
+32,68,46,76,111,103,103,101,114,40,39,67,39,41,41,59,10,32,32,32,32,125,10,
+10,32,32,32,32,47,47,32,84,114,97,99,107,105,110,103,32,116,97,98,108,101,
+32,102,111,114,32,67,111,109,109,111,110,74,83,32,109,111,100,117,108,101,
+32,108,111,97,100,105,110,103,46,10,32,32,32,32,105,102,32,40,116,114,117,
+101,41,32,123,10,32,32,32,32,32,32,32,32,100,101,102,40,68,44,32,39,109,
+111,100,76,111,97,100,101,100,39,44,32,123,125,41,59,10,32,32,32,32,125,10,
+125,41,40,116,104,105,115,44,32,68,117,107,116,97,112,101,41,59,10,0,
};
#endif /* DUK_USE_BUILTIN_INITJS */
#else
@@ -13765,6 +14451,14 @@ DUK_INTERNAL void duk_unicode_case_convert_string(duk_hthread *thr, duk_small_in
*/
DUK_INTERNAL duk_codepoint_t duk_unicode_re_canonicalize_char(duk_hthread *thr, duk_codepoint_t cp) {
+#if 1 /* FIXME */
+ /* Fast canonicalization lookup at the cost of 128kB footprint. */
+ DUK_ASSERT(cp >= 0);
+ if (DUK_LIKELY(cp < 0x10000L)) {
+ return (duk_codepoint_t) duk_unicode_re_canon_lookup[cp];
+ }
+ return cp;
+#else
duk_codepoint_t y;
y = duk__case_transform_helper(thr,
@@ -13782,6 +14476,7 @@ DUK_INTERNAL duk_codepoint_t duk_unicode_re_canonicalize_char(duk_hthread *thr,
}
return y;
+#endif
}
/*
@@ -14185,8 +14880,8 @@ DUK_EXTERNAL void *duk_resize_buffer(duk_context *ctx, duk_idx_t index, duk_size
h = (duk_hbuffer_dynamic *) duk_require_hbuffer(ctx, index);
DUK_ASSERT(h != NULL);
- if (!DUK_HBUFFER_HAS_DYNAMIC(h)) {
- DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_BUFFER_NOT_DYNAMIC);
+ if (!(DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h))) {
+ DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_WRONG_BUFFER_TYPE);
}
/* maximum size check is handled by callee */
@@ -14206,8 +14901,8 @@ DUK_EXTERNAL void *duk_steal_buffer(duk_context *ctx, duk_idx_t index, duk_size_
h = (duk_hbuffer_dynamic *) duk_require_hbuffer(ctx, index);
DUK_ASSERT(h != NULL);
- if (!DUK_HBUFFER_HAS_DYNAMIC(h)) {
- DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_BUFFER_NOT_DYNAMIC);
+ if (!(DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h))) {
+ DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_WRONG_BUFFER_TYPE);
}
/* Forget the previous allocation, setting size to 0 and alloc to
@@ -14225,6 +14920,24 @@ DUK_EXTERNAL void *duk_steal_buffer(duk_context *ctx, duk_idx_t index, duk_size_
return ptr;
}
+
+DUK_EXTERNAL void duk_config_buffer(duk_context *ctx, duk_idx_t index, void *ptr, duk_size_t len) {
+ duk_hthread *thr = (duk_hthread *) ctx;
+ duk_hbuffer_external *h;
+
+ DUK_ASSERT(ctx != NULL);
+
+ h = (duk_hbuffer_external *) duk_require_hbuffer(ctx, index);
+ DUK_ASSERT(h != NULL);
+
+ if (!DUK_HBUFFER_HAS_EXTERNAL(h)) {
+ DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_WRONG_BUFFER_TYPE);
+ }
+ DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h));
+
+ DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(thr->heap, h, ptr);
+ DUK_HBUFFER_EXTERNAL_SET_SIZE(h, len);
+}
#line 1 "duk_api_bytecode.c"
/*
* Bytecode dump/load
@@ -14608,7 +15321,7 @@ static duk_uint8_t *duk__load_func(duk_context *ctx, duk_uint8_t *p, duk_uint8_t
duk_uint8_t *fun_data;
duk_uint8_t *q;
duk_idx_t idx_base;
- duk_tval *tv;
+ duk_tval *tv1;
duk_uarridx_t arr_idx;
/* XXX: There's some overlap with duk_js_closure() here, but
@@ -14709,10 +15422,15 @@ static duk_uint8_t *duk__load_func(duk_context *ctx, duk_uint8_t *p, duk_uint8_t
break;
}
case DUK__SER_NUMBER: {
+ /* Important to do a fastint check so that constants are
+ * properly read back as fastints.
+ */
+ duk_tval tv_tmp;
duk_double_t val;
DUK__ASSERT_LEFT(8);
val = DUK_RAW_READ_DOUBLE_BE(p);
- duk_push_number(ctx, val);
+ DUK_TVAL_SET_NUMBER_CHKFAST(&tv_tmp, val);
+ duk_push_tval(ctx, &tv_tmp);
break;
}
default: {
@@ -14744,28 +15462,28 @@ static duk_uint8_t *duk__load_func(duk_context *ctx, duk_uint8_t *p, duk_uint8_t
DUK_HCOMPILEDFUNCTION_SET_DATA(thr->heap, h_fun, h_data);
DUK_HBUFFER_INCREF(thr, h_data);
- tv = duk_get_tval(ctx, idx_base + 2); /* may be NULL if no constants or inner funcs */
- DUK_ASSERT((count_const == 0 && count_funcs == 0) || tv != NULL);
+ tv1 = duk_get_tval(ctx, idx_base + 2); /* may be NULL if no constants or inner funcs */
+ DUK_ASSERT((count_const == 0 && count_funcs == 0) || tv1 != NULL);
q = fun_data;
if (count_const > 0) {
- /* Explicit zero size check to avoid NULL 'tv'. */
- DUK_MEMCPY((void *) q, (const void *) tv, sizeof(duk_tval) * count_const);
+ /* Explicit zero size check to avoid NULL 'tv1'. */
+ DUK_MEMCPY((void *) q, (const void *) tv1, sizeof(duk_tval) * count_const);
for (n = count_const; n > 0; n--) {
DUK_TVAL_INCREF_FAST(thr, (duk_tval *) (void *) q); /* no side effects */
q += sizeof(duk_tval);
}
- tv += count_const;
+ tv1 += count_const;
}
DUK_HCOMPILEDFUNCTION_SET_FUNCS(thr->heap, h_fun, (duk_hobject **) (void *) q);
for (n = count_funcs; n > 0; n--) {
duk_hobject *h_obj;
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- h_obj = DUK_TVAL_GET_OBJECT(tv);
+ DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv1));
+ h_obj = DUK_TVAL_GET_OBJECT(tv1);
DUK_ASSERT(h_obj != NULL);
- tv++;
+ tv1++;
DUK_HOBJECT_INCREF(thr, h_obj);
*((duk_hobject **) (void *) q) = h_obj;
@@ -15346,6 +16064,7 @@ DUK_EXTERNAL void duk_new(duk_context *ctx, duk_idx_t nargs) {
*/
#ifdef DUK_USE_AUGMENT_ERROR_CREATE
+ duk_hthread_sync_currpc(thr);
duk_err_augment_error_create(thr, thr, NULL, 0, 1 /*noblame_fileline*/);
#endif
@@ -15357,6 +16076,34 @@ DUK_EXTERNAL void duk_new(duk_context *ctx, duk_idx_t nargs) {
DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_NOT_CONSTRUCTABLE);
}
+DUK_LOCAL duk_ret_t duk__pnew_helper(duk_context *ctx) {
+ duk_uint_t nargs;
+
+ nargs = duk_to_uint(ctx, -1);
+ duk_pop(ctx);
+
+ duk_new(ctx, nargs);
+ return 1;
+}
+
+DUK_EXTERNAL duk_int_t duk_pnew(duk_context *ctx, duk_idx_t nargs) {
+ duk_int_t rc;
+
+ DUK_ASSERT_CTX_VALID(ctx);
+
+ /* For now, just use duk_safe_call() to wrap duk_new(). We can't
+ * simply use a protected duk_handle_call() because there's post
+ * processing which might throw. It should be possible to ensure
+ * the post processing never throws (except in internal errors and
+ * out of memory etc which are always allowed) and then remove this
+ * wrapper.
+ */
+
+ duk_push_uint(ctx, nargs);
+ rc = duk_safe_call(ctx, duk__pnew_helper, nargs + 2 /*nargs*/, 1 /*nrets*/);
+ return rc;
+}
+
DUK_EXTERNAL duk_bool_t duk_is_constructor_call(duk_context *ctx) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_activation *act;
@@ -15893,10 +16640,12 @@ DUK_EXTERNAL duk_int_t duk_eval_raw(duk_context *ctx, const char *src_buffer, du
goto got_rc;
}
+ duk_push_global_object(ctx); /* explicit 'this' binding, see GH-164 */
+
if (flags & DUK_COMPILE_SAFE) {
- rc = duk_pcall(ctx, 0);
+ rc = duk_pcall_method(ctx, 0);
} else {
- duk_call(ctx, 0);
+ duk_call_method(ctx, 0);
rc = DUK_EXEC_SUCCESS;
}
@@ -16105,6 +16854,7 @@ DUK_EXTERNAL void duk_debugger_attach(duk_context *ctx,
heap->dbg_processing = 0;
heap->dbg_paused = 1;
heap->dbg_state_dirty = 1;
+ heap->dbg_force_restart = 0;
heap->dbg_step_type = 0;
heap->dbg_step_thread = NULL;
heap->dbg_step_csindex = 0;
@@ -16284,6 +17034,7 @@ DUK_EXTERNAL void duk_set_global_object(duk_context *ctx) {
*/
h_prev_glob = thr->builtins[DUK_BIDX_GLOBAL];
+ DUK_UNREF(h_prev_glob);
thr->builtins[DUK_BIDX_GLOBAL] = h_glob;
DUK_HOBJECT_INCREF(thr, h_glob);
DUK_HOBJECT_DECREF_ALLOWNULL(thr, h_prev_glob); /* side effects, in theory (referenced by global env) */
@@ -17110,6 +17861,7 @@ DUK_EXTERNAL duk_int_t duk_api_global_line = 0;
* Helpers
*/
+/* Check that there's room to push one value. */
#if defined(DUK_USE_VALSTACK_UNSAFE)
/* Faster but value stack overruns are memory unsafe. */
#define DUK__CHECK_SPACE() do { \
@@ -17185,9 +17937,9 @@ DUK_LOCAL duk_int_t duk__api_coerce_d2i(duk_context *ctx, duk_idx_t index, duk_b
if (require) {
DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_NOT_NUMBER);
- } else {
- return 0;
+ /* not reachable */
}
+ return 0;
}
DUK_LOCAL duk_uint_t duk__api_coerce_d2ui(duk_context *ctx, duk_idx_t index, duk_bool_t require) {
@@ -17242,9 +17994,9 @@ DUK_LOCAL duk_uint_t duk__api_coerce_d2ui(duk_context *ctx, duk_idx_t index, duk
if (require) {
DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_NOT_NUMBER);
- } else {
- return 0;
+ /* not reachable */
}
+ return 0;
}
/*
@@ -17258,7 +18010,8 @@ DUK_LOCAL duk_uint_t duk__api_coerce_d2ui(duk_context *ctx, duk_idx_t index, duk
DUK_EXTERNAL duk_idx_t duk_normalize_index(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t vs_size;
+ duk_uidx_t vs_size;
+ duk_uidx_t uindex;
DUK_ASSERT_CTX_VALID(ctx);
DUK_ASSERT(DUK_INVALID_INDEX < 0);
@@ -17270,117 +18023,110 @@ DUK_EXTERNAL duk_idx_t duk_normalize_index(duk_context *ctx, duk_idx_t index) {
*/
/* Assume value stack sizes (in elements) fits into duk_idx_t. */
- vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
- DUK_ASSERT(vs_size >= 0);
+ DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
+ vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
+ DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */
if (index < 0) {
- index = vs_size + index;
- if (DUK_UNLIKELY(index < 0)) {
- /* Also catches index == DUK_INVALID_INDEX: vs_size >= 0
- * so that vs_size + DUK_INVALID_INDEX cannot underflow
- * and will always be negative.
- */
- return DUK_INVALID_INDEX;
- }
+ uindex = vs_size + (duk_uidx_t) index;
} else {
/* since index non-negative */
DUK_ASSERT(index != DUK_INVALID_INDEX);
-
- if (DUK_UNLIKELY(index >= vs_size)) {
- return DUK_INVALID_INDEX;
- }
+ uindex = (duk_uidx_t) index;
}
- DUK_ASSERT(index >= 0);
- DUK_ASSERT(index < vs_size);
- return index;
+ /* DUK_INVALID_INDEX won't be accepted as a valid index. */
+ DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
+
+ if (DUK_LIKELY(uindex < vs_size)) {
+ return (duk_idx_t) uindex;
+ }
+ return DUK_INVALID_INDEX;
}
DUK_EXTERNAL duk_idx_t duk_require_normalize_index(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t vs_size;
+ duk_uidx_t vs_size;
+ duk_uidx_t uindex;
DUK_ASSERT_CTX_VALID(ctx);
DUK_ASSERT(DUK_INVALID_INDEX < 0);
- vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
- DUK_ASSERT(vs_size >= 0);
+ DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
+ vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
+ DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */
if (index < 0) {
- index = vs_size + index;
- if (DUK_UNLIKELY(index < 0)) {
- goto invalid_index;
- }
+ uindex = vs_size + (duk_uidx_t) index;
} else {
DUK_ASSERT(index != DUK_INVALID_INDEX);
- if (DUK_UNLIKELY(index >= vs_size)) {
- goto invalid_index;
- }
+ uindex = (duk_uidx_t) index;
}
- DUK_ASSERT(index >= 0);
- DUK_ASSERT(index < vs_size);
- return index;
+ /* DUK_INVALID_INDEX won't be accepted as a valid index. */
+ DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
- invalid_index:
+ if (DUK_LIKELY(uindex < vs_size)) {
+ return (duk_idx_t) uindex;
+ }
DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_INDEX);
return 0; /* unreachable */
}
DUK_INTERNAL duk_tval *duk_get_tval(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t vs_size;
+ duk_uidx_t vs_size;
+ duk_uidx_t uindex;
DUK_ASSERT_CTX_VALID(ctx);
DUK_ASSERT(DUK_INVALID_INDEX < 0);
- vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
- DUK_ASSERT(vs_size >= 0);
+ DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
+ vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
+ DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */
if (index < 0) {
- index = vs_size + index;
- if (DUK_UNLIKELY(index < 0)) {
- return NULL;
- }
+ uindex = vs_size + (duk_uidx_t) index;
} else {
DUK_ASSERT(index != DUK_INVALID_INDEX);
- if (DUK_UNLIKELY(index >= vs_size)) {
- return NULL;
- }
+ uindex = (duk_uidx_t) index;
}
- DUK_ASSERT(index >= 0);
- DUK_ASSERT(index < vs_size);
- return thr->valstack_bottom + index;
+ /* DUK_INVALID_INDEX won't be accepted as a valid index. */
+ DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
+
+ if (DUK_LIKELY(uindex < vs_size)) {
+ return thr->valstack_bottom + uindex;
+ }
+ return NULL;
}
DUK_INTERNAL duk_tval *duk_require_tval(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t vs_size;
+ duk_uidx_t vs_size;
+ duk_uidx_t uindex;
DUK_ASSERT_CTX_VALID(ctx);
DUK_ASSERT(DUK_INVALID_INDEX < 0);
- vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
- DUK_ASSERT(vs_size >= 0);
+ DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
+ vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
+ DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */
+ /* Use unsigned arithmetic to optimize comparison. */
if (index < 0) {
- index = vs_size + index;
- if (DUK_UNLIKELY(index < 0)) {
- goto invalid_index;
- }
+ uindex = vs_size + (duk_uidx_t) index;
} else {
DUK_ASSERT(index != DUK_INVALID_INDEX);
- if (DUK_UNLIKELY(index >= vs_size)) {
- goto invalid_index;
- }
+ uindex = (duk_uidx_t) index;
}
- DUK_ASSERT(index >= 0);
- DUK_ASSERT(index < vs_size);
- return thr->valstack_bottom + index;
+ /* DUK_INVALID_INDEX won't be accepted as a valid index. */
+ DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
- invalid_index:
+ if (DUK_LIKELY(uindex < vs_size)) {
+ return thr->valstack_bottom + uindex;
+ }
DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_INDEX);
return NULL;
}
@@ -17417,91 +18163,98 @@ DUK_EXTERNAL duk_idx_t duk_get_top(duk_context *ctx) {
return (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
}
-/* set stack top within currently allocated range, but don't reallocate */
+/* Set stack top within currently allocated range, but don't reallocate.
+ * This is performance critical especially for call handling, so whenever
+ * changing, profile and look at generated code.
+ */
DUK_EXTERNAL void duk_set_top(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t vs_size;
- duk_idx_t vs_limit;
- duk_idx_t count;
- duk_tval tv_tmp;
+ duk_uidx_t vs_size;
+ duk_uidx_t vs_limit;
+ duk_uidx_t uindex;
duk_tval *tv;
DUK_ASSERT_CTX_VALID(ctx);
DUK_ASSERT(DUK_INVALID_INDEX < 0);
- vs_size = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
- vs_limit = (duk_idx_t) (thr->valstack_end - thr->valstack_bottom);
+ DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
+ DUK_ASSERT(thr->valstack_end >= thr->valstack_bottom);
+ vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
+ vs_limit = (duk_uidx_t) (thr->valstack_end - thr->valstack_bottom);
if (index < 0) {
/* Negative indices are always within allocated stack but
* must not go below zero index.
*/
- index = vs_size + index;
- if (index < 0) {
- /* Also catches index == DUK_INVALID_INDEX. */
- goto invalid_index;
- }
+ uindex = vs_size + (duk_uidx_t) index;
} else {
/* Positive index can be higher than valstack top but must
* not go above allocated stack (equality is OK).
*/
- if (index > vs_limit) {
- goto invalid_index;
- }
+ uindex = (duk_uidx_t) index;
}
- DUK_ASSERT(index >= 0);
- DUK_ASSERT(index <= vs_limit);
- if (index >= vs_size) {
- /* Stack size increases or stays the same. Fill the new
- * entries (if any) with undefined. No pointer stability
- * issues here so we can use a running pointer.
- */
+ /* DUK_INVALID_INDEX won't be accepted as a valid index. */
+ DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
+ DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_limit);
- tv = thr->valstack_top;
- count = index - vs_size;
- DUK_ASSERT(count >= 0);
- while (count > 0) {
- /* no need to decref previous or new value */
+#if defined(DUK_USE_VALSTACK_UNSAFE)
+ DUK_ASSERT(uindex <= vs_limit);
+#else
+ if (DUK_UNLIKELY(uindex > vs_limit)) {
+ DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_INDEX);
+ return;
+ }
+#endif
+ DUK_ASSERT(uindex <= vs_limit);
+
+ /* Handle change in value stack top. Respect value stack
+ * initialization policy: 'undefined' above top. Note that
+ * DECREF may cause a side effect that reallocates valstack,
+ * so must relookup after DECREF.
+ */
+
+ if (uindex >= vs_size) {
+ /* Stack size increases or stays the same. */
+#if defined(DUK_USE_ASSERTIONS)
+ duk_uidx_t count;
+
+ count = uindex - vs_size;
+ while (count != 0) {
count--;
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(tv));
- DUK_TVAL_SET_UNDEFINED_ACTUAL(tv);
- tv++;
+ tv = thr->valstack_top + count;
+ DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv));
}
- thr->valstack_top = tv;
+#endif
+ thr->valstack_top = thr->valstack_bottom + uindex;
} else {
- /* Stack size decreases, DECREF entries which are above the
- * new top. Each DECREF potentially invalidates valstack
- * pointers, so don't hold on to pointers. The valstack top
- * must also be updated on every loop in case a GC is triggered.
- */
-
- /* XXX: Here it would be useful to have a DECREF macro which
- * doesn't need a NULL check, and does refzero queueing without
- * running the refzero algorithm. There would be no pointer
- * instability in this case, and code could be inlined. After
- * the loop, one call to refzero would be needed.
- */
+ /* Stack size decreases. */
+#if defined(DUK_USE_REFERENCE_COUNTING)
+ duk_uidx_t count;
- count = vs_size - index;
+ count = vs_size - uindex;
DUK_ASSERT(count > 0);
-
while (count > 0) {
count--;
- tv = --thr->valstack_top; /* tv -> value just before prev top value */
+ tv = --thr->valstack_top; /* tv -> value just before prev top value; must relookup */
DUK_ASSERT(tv >= thr->valstack_bottom);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
-
- /* XXX: fast primitive to set a bunch of values to UNDEFINED_UNUSED */
-
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
}
- }
- return;
+#else /* DUK_USE_REFERENCE_COUNTING */
+ duk_uidx_t count;
+ duk_tval *tv_end;
- invalid_index:
- DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_INDEX);
+ count = vs_size - uindex;
+ tv = thr->valstack_top;
+ tv_end = tv - count;
+ DUK_ASSERT(tv > tv_end);
+ do {
+ tv--;
+ DUK_TVAL_SET_UNDEFINED(tv);
+ } while (tv != tv_end);
+ thr->valstack_top = tv_end;
+#endif /* DUK_USE_REFERENCE_COUNTING */
+ }
}
DUK_EXTERNAL duk_idx_t duk_get_top_index(duk_context *ctx) {
@@ -17567,8 +18320,8 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size)
duk_tval *old_valstack_post;
#endif
duk_tval *new_valstack;
- duk_tval *p;
duk_size_t new_alloc_size;
+ duk_tval *p;
DUK_ASSERT_CTX_VALID(ctx);
DUK_ASSERT(thr != NULL);
@@ -17591,7 +18344,7 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size)
*
* Note: cannot use a plain DUK_REALLOC() because a mark-and-sweep may
* invalidate the original thr->valstack base pointer inside the realloc
- * process. See doc/memory-management.txt.
+ * process. See doc/memory-management.rst.
*/
new_alloc_size = sizeof(duk_tval) * new_size;
@@ -17619,7 +18372,7 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size)
* because mark-and-sweep must adhere to a strict stack policy.
* In other words, logical bottom and top MUST NOT have changed.
* - All values above the top are unreachable but are initialized
- * to UNDEFINED_UNUSED, up to the post-realloc valstack_end.
+ * to UNDEFINED, up to the post-realloc valstack_end.
* - 'old_end_offset' must be computed after realloc to be correct.
*/
@@ -17633,6 +18386,9 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size)
#endif
thr->valstack = new_valstack;
thr->valstack_end = new_valstack + new_size;
+#if !defined(DUK_USE_PREFER_SIZE)
+ thr->valstack_size = new_size;
+#endif
thr->valstack_bottom = (duk_tval *) (void *) ((duk_uint8_t *) new_valstack + old_bottom_offset);
thr->valstack_top = (duk_tval *) (void *) ((duk_uint8_t *) new_valstack + old_top_offset);
@@ -17663,23 +18419,23 @@ DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size)
(void *) thr->valstack, (void *) thr->valstack_end,
(void *) thr->valstack_bottom, (void *) thr->valstack_top));
- /* init newly allocated slots (only) */
+ /* Init newly allocated slots (only). */
p = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + old_end_offset_post);
while (p < thr->valstack_end) {
- /* never executed if new size is smaller */
- DUK_TVAL_SET_UNDEFINED_UNUSED(p);
+ /* Never executed if new size is smaller. */
+ DUK_TVAL_SET_UNDEFINED(p);
p++;
}
- /* assertion check: we maintain elements above top in known state */
-#ifdef DUK_USE_ASSERTIONS
+ /* Assert for value stack initialization policy. */
+#if defined(DUK_USE_ASSERTIONS)
p = thr->valstack_top;
while (p < thr->valstack_end) {
- /* everything above old valstack top should be preinitialized now */
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(p));
+ DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(p));
p++;
}
#endif
+
return 1;
}
@@ -17709,7 +18465,12 @@ duk_bool_t duk_valstack_resize_raw(duk_context *ctx,
DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
+#if defined(DUK_USE_PREFER_SIZE)
old_size = (duk_size_t) (thr->valstack_end - thr->valstack);
+#else
+ DUK_ASSERT((duk_size_t) (thr->valstack_end - thr->valstack) == thr->valstack_size);
+ old_size = thr->valstack_size;
+#endif
if (min_new_size <= old_size) {
is_shrink = 1;
@@ -17983,10 +18744,9 @@ DUK_EXTERNAL void duk_replace(duk_context *ctx, duk_idx_t to_index) {
/* For tv1 == tv2, both pointing to stack top, the end result
* is same as duk_pop(ctx).
*/
-
DUK_TVAL_SET_TVAL(&tv_tmp, tv2);
DUK_TVAL_SET_TVAL(tv2, tv1);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv1);
+ DUK_TVAL_SET_UNDEFINED(tv1);
thr->valstack_top--;
DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
}
@@ -17995,7 +18755,6 @@ DUK_EXTERNAL void duk_copy(duk_context *ctx, duk_idx_t from_index, duk_idx_t to_
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv1;
duk_tval *tv2;
- duk_tval tv_tmp;
DUK_ASSERT_CTX_VALID(ctx);
DUK_UNREF(thr); /* w/o refcounting */
@@ -18006,11 +18765,7 @@ DUK_EXTERNAL void duk_copy(duk_context *ctx, duk_idx_t from_index, duk_idx_t to_
DUK_ASSERT(tv2 != NULL);
/* For tv1 == tv2, this is a no-op (no explicit check needed). */
-
- DUK_TVAL_SET_TVAL(&tv_tmp, tv2);
- DUK_TVAL_SET_TVAL(tv2, tv1);
- DUK_TVAL_INCREF(thr, tv2); /* no side effects */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv2, tv1); /* side effects */
}
DUK_EXTERNAL void duk_remove(duk_context *ctx, duk_idx_t index) {
@@ -18045,7 +18800,7 @@ DUK_EXTERNAL void duk_remove(duk_context *ctx, duk_idx_t index) {
nbytes = (duk_size_t) (((duk_uint8_t *) q) - ((duk_uint8_t *) p)); /* Note: 'q' is top-1 */
DUK_MEMMOVE(p, p + 1, nbytes); /* zero size not an issue: pointers are valid */
- DUK_TVAL_SET_UNDEFINED_UNUSED(q);
+ DUK_TVAL_SET_UNDEFINED(q);
thr->valstack_top--;
#ifdef DUK_USE_REFERENCE_COUNTING
@@ -18106,24 +18861,22 @@ DUK_EXTERNAL void duk_xcopymove_raw(duk_context *to_ctx, duk_context *from_ctx,
to_thr->valstack_top = (duk_tval *) (void *) (((duk_uint8_t *) p) + nbytes);
if (is_copy) {
- /* incref copies, keep originals */
+ /* Incref copies, keep originals. */
q = to_thr->valstack_top;
while (p < q) {
DUK_TVAL_INCREF(to_thr, p); /* no side effects */
p++;
}
} else {
- /* no net refcount change */
+ /* No net refcount change. */
p = from_thr->valstack_top;
q = (duk_tval *) (void *) (((duk_uint8_t *) p) - nbytes);
from_thr->valstack_top = q;
- /* elements above stack top are kept UNUSED */
while (p > q) {
p--;
- DUK_TVAL_SET_UNDEFINED_UNUSED(p);
-
- /* XXX: fast primitive to set a bunch of values to UNDEFINED_UNUSED */
+ DUK_TVAL_SET_UNDEFINED(p);
+ /* XXX: fast primitive to set a bunch of values to UNDEFINED */
}
}
}
@@ -18790,6 +19543,7 @@ DUK_EXTERNAL duk_size_t duk_get_length(duk_context *ctx, duk_idx_t index) {
#endif
default:
/* number */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
return 0;
}
@@ -18880,31 +19634,25 @@ DUK_EXTERNAL void duk_to_defaultvalue(duk_context *ctx, duk_idx_t index, duk_int
DUK_EXTERNAL void duk_to_undefined(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv;
- duk_tval tv_tmp;
DUK_ASSERT_CTX_VALID(ctx);
DUK_UNREF(thr);
tv = duk_require_tval(ctx, index);
DUK_ASSERT(tv != NULL);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_UNDEFINED_ACTUAL(tv); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
}
DUK_EXTERNAL void duk_to_null(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv;
- duk_tval tv_tmp;
DUK_ASSERT_CTX_VALID(ctx);
DUK_UNREF(thr);
tv = duk_require_tval(ctx, index);
DUK_ASSERT(tv != NULL);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_NULL(tv); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NULL_UPDREF(thr, tv); /* side effects */
}
/* E5 Section 9.1 */
@@ -18926,7 +19674,6 @@ DUK_EXTERNAL void duk_to_primitive(duk_context *ctx, duk_idx_t index, duk_int_t
DUK_EXTERNAL duk_bool_t duk_to_boolean(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv;
- duk_tval tv_tmp;
duk_bool_t val;
DUK_ASSERT_CTX_VALID(ctx);
@@ -18942,16 +19689,13 @@ DUK_EXTERNAL duk_bool_t duk_to_boolean(duk_context *ctx, duk_idx_t index) {
/* Note: no need to re-lookup tv, conversion is side effect free */
DUK_ASSERT(tv != NULL);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_BOOLEAN(tv, val); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv, val); /* side effects */
return val;
}
DUK_EXTERNAL duk_double_t duk_to_number(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv;
- duk_tval tv_tmp;
duk_double_t d;
DUK_ASSERT_CTX_VALID(ctx);
@@ -18963,9 +19707,7 @@ DUK_EXTERNAL duk_double_t duk_to_number(duk_context *ctx, duk_idx_t index) {
/* Note: need to re-lookup because ToNumber() may have side effects */
tv = duk_require_tval(ctx, index);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_NUMBER(tv, d); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, d); /* side effects */
return d;
}
@@ -18978,7 +19720,6 @@ typedef duk_double_t (*duk__toint_coercer)(duk_hthread *thr, duk_tval *tv);
DUK_LOCAL duk_double_t duk__to_int_uint_helper(duk_context *ctx, duk_idx_t index, duk__toint_coercer coerce_func) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv;
- duk_tval tv_tmp;
duk_double_t d;
DUK_ASSERT_CTX_VALID(ctx);
@@ -18991,9 +19732,7 @@ DUK_LOCAL duk_double_t duk__to_int_uint_helper(duk_context *ctx, duk_idx_t index
/* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */
tv = duk_require_tval(ctx, index);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_NUMBER(tv, d); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, d); /* side effects */
return d;
}
@@ -19018,7 +19757,6 @@ DUK_EXTERNAL duk_uint_t duk_to_uint(duk_context *ctx, duk_idx_t index) {
DUK_EXTERNAL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv;
- duk_tval tv_tmp;
duk_int32_t ret;
DUK_ASSERT_CTX_VALID(ctx);
@@ -19030,14 +19768,10 @@ DUK_EXTERNAL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t index) {
/* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */
tv = duk_require_tval(ctx, index);
#if defined(DUK_USE_FASTINT)
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_FASTINT_I32(tv, ret); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_FASTINT_I32_UPDREF(thr, tv, ret); /* side effects */
return ret;
#else
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_NUMBER(tv, (duk_double_t) ret); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, (duk_double_t) ret); /* side effects */
return ret;
#endif
}
@@ -19045,7 +19779,6 @@ DUK_EXTERNAL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t index) {
DUK_EXTERNAL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv;
- duk_tval tv_tmp;
duk_uint32_t ret;
DUK_ASSERT_CTX_VALID(ctx);
@@ -19057,14 +19790,10 @@ DUK_EXTERNAL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t index) {
/* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */
tv = duk_require_tval(ctx, index);
#if defined(DUK_USE_FASTINT)
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_FASTINT_U32(tv, ret); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv, ret); /* side effects */
return ret;
#else
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_NUMBER(tv, (duk_double_t) ret); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, (duk_double_t) ret); /* side effects */
#endif
return ret;
}
@@ -19072,7 +19801,6 @@ DUK_EXTERNAL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t index) {
DUK_EXTERNAL duk_uint16_t duk_to_uint16(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv;
- duk_tval tv_tmp;
duk_uint16_t ret;
DUK_ASSERT_CTX_VALID(ctx);
@@ -19084,18 +19812,15 @@ DUK_EXTERNAL duk_uint16_t duk_to_uint16(duk_context *ctx, duk_idx_t index) {
/* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */
tv = duk_require_tval(ctx, index);
#if defined(DUK_USE_FASTINT)
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_FASTINT_U32(tv, ret); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv, ret); /* side effects */
return ret;
#else
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_NUMBER(tv, (duk_double_t) ret); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, (duk_double_t) ret); /* side effects */
#endif
return ret;
}
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Special coercion for Uint8ClampedArray. */
DUK_INTERNAL duk_uint8_t duk_to_uint8clamped(duk_context *ctx, duk_idx_t index) {
duk_double_t d;
@@ -19130,6 +19855,7 @@ DUK_INTERNAL duk_uint8_t duk_to_uint8clamped(duk_context *ctx, duk_idx_t index)
}
return ret;
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
DUK_EXTERNAL const char *duk_to_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len) {
DUK_ASSERT_CTX_VALID(ctx);
@@ -19171,11 +19897,21 @@ DUK_EXTERNAL const char *duk_safe_to_lstring(duk_context *ctx, duk_idx_t index,
;
}
DUK_ASSERT(duk_is_string(ctx, -1));
+ DUK_ASSERT(duk_get_string(ctx, -1) != NULL);
duk_replace(ctx, index);
- return duk_require_lstring(ctx, index, out_len);
+ return duk_get_lstring(ctx, index, out_len);
}
+#if defined(DUK_USE_DEBUGGER_SUPPORT) /* only needed by debugger for now */
+DUK_EXTERNAL duk_hstring *duk_safe_to_hstring(duk_context *ctx, duk_idx_t index) {
+ (void) duk_safe_to_string(ctx, index);
+ DUK_ASSERT(duk_is_string(ctx, index));
+ DUK_ASSERT(duk_get_hstring(ctx, index) != NULL);
+ return duk_get_hstring(ctx, index);
+}
+#endif
+
/* XXX: other variants like uint, u32 etc */
DUK_INTERNAL duk_int_t duk_to_int_clamped_raw(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval, duk_bool_t *out_clamped) {
duk_hthread *thr = (duk_hthread *) ctx;
@@ -19318,6 +20054,7 @@ DUK_EXTERNAL const char *duk_to_string(duk_context *ctx, duk_idx_t index) {
#endif
default: {
/* number */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
duk_push_tval(ctx, tv);
duk_numconv_stringify(ctx,
@@ -19358,7 +20095,9 @@ DUK_EXTERNAL void *duk_to_buffer_raw(duk_context *ctx, duk_idx_t index, duk_size
h_buf = duk_get_hbuffer(ctx, index);
if (h_buf != NULL) {
/* Buffer is kept as is, with the fixed/dynamic nature of the
- * buffer only changed if requested.
+ * buffer only changed if requested. An external buffer
+ * is converted into a non-external dynamic buffer in a
+ * duk_to_dynamic_buffer() call.
*/
duk_uint_t tmp;
@@ -19366,7 +20105,8 @@ DUK_EXTERNAL void *duk_to_buffer_raw(duk_context *ctx, duk_idx_t index, duk_size
src_size = DUK_HBUFFER_GET_SIZE(h_buf);
tmp = (DUK_HBUFFER_HAS_DYNAMIC(h_buf) ? DUK_BUF_MODE_DYNAMIC : DUK_BUF_MODE_FIXED);
- if (tmp == mode || mode == DUK_BUF_MODE_DONTCARE) {
+ if ((tmp == mode && !DUK_HBUFFER_HAS_EXTERNAL(h_buf)) ||
+ mode == DUK_BUF_MODE_DONTCARE) {
/* Note: src_data may be NULL if input is a zero-size
* dynamic buffer.
*/
@@ -19440,6 +20180,8 @@ DUK_EXTERNAL void *duk_to_pointer(duk_context *ctx, duk_idx_t index) {
#endif
default:
/* number */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
+ DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
res = NULL;
break;
}
@@ -19497,11 +20239,11 @@ DUK_EXTERNAL void duk_to_object(duk_context *ctx, duk_idx_t index) {
h_val = DUK_TVAL_GET_BUFFER(tv);
DUK_ASSERT(h_val != NULL);
- h_bufobj = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
- DUK_BIDX_BUFFER_PROTOTYPE);
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
+ DUK_BIDX_BUFFER_PROTOTYPE);
DUK_ASSERT(h_bufobj != NULL);
DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE((duk_hobject *) h_bufobj));
DUK_ASSERT(DUK_HOBJECT_IS_BUFFEROBJECT((duk_hobject *) h_bufobj));
@@ -19575,6 +20317,8 @@ DUK_EXTERNAL void duk_to_object(duk_context *ctx, duk_idx_t index) {
case DUK_TAG_FASTINT:
#endif
default: {
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
+ DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
flags = DUK_HOBJECT_FLAG_EXTENSIBLE |
DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_NUMBER);
proto = DUK_BIDX_NUMBER_PROTOTYPE;
@@ -19657,6 +20401,7 @@ DUK_EXTERNAL duk_int_t duk_get_type(duk_context *ctx, duk_idx_t index) {
#endif
default:
/* Note: number has no explicit tag (in 8-byte representation) */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
return DUK_TYPE_NUMBER;
}
@@ -19700,6 +20445,7 @@ DUK_EXTERNAL duk_uint_t duk_get_type_mask(duk_context *ctx, duk_idx_t index) {
#endif
default:
/* Note: number has no explicit tag (in 8-byte representation) */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
return DUK_TYPE_MASK_NUMBER;
}
@@ -19874,7 +20620,7 @@ DUK_EXTERNAL duk_bool_t duk_is_callable(duk_context *ctx, duk_idx_t index) {
return duk_is_function(ctx, index);
}
-DUK_EXTERNAL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t index) {
+DUK_EXTERNAL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t index) {
duk_tval *tv;
DUK_ASSERT_CTX_VALID(ctx);
@@ -19883,12 +20629,12 @@ DUK_EXTERNAL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t index)
if (tv && DUK_TVAL_IS_BUFFER(tv)) {
duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
DUK_ASSERT(h != NULL);
- return (DUK_HBUFFER_HAS_DYNAMIC(h) ? 1 : 0);
+ return (DUK_HBUFFER_HAS_DYNAMIC(h) ? 0 : 1);
}
return 0;
}
-DUK_EXTERNAL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t index) {
+DUK_EXTERNAL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t index) {
duk_tval *tv;
DUK_ASSERT_CTX_VALID(ctx);
@@ -19897,16 +20643,23 @@ DUK_EXTERNAL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t index) {
if (tv && DUK_TVAL_IS_BUFFER(tv)) {
duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
DUK_ASSERT(h != NULL);
- return (DUK_HBUFFER_HAS_DYNAMIC(h) ? 0 : 1);
+ return (DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h) ? 1 : 0);
}
return 0;
}
-/* XXX: make macro in API */
-DUK_EXTERNAL duk_bool_t duk_is_primitive(duk_context *ctx, duk_idx_t index) {
+DUK_EXTERNAL duk_bool_t duk_is_external_buffer(duk_context *ctx, duk_idx_t index) {
+ duk_tval *tv;
+
DUK_ASSERT_CTX_VALID(ctx);
- return !duk_is_object(ctx, index);
+ tv = duk_get_tval(ctx, index);
+ if (tv && DUK_TVAL_IS_BUFFER(tv)) {
+ duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
+ DUK_ASSERT(h != NULL);
+ return (DUK_HBUFFER_HAS_DYNAMIC(h) && DUK_HBUFFER_HAS_EXTERNAL(h) ? 1 : 0);
+ }
+ return 0;
}
DUK_EXTERNAL duk_errcode_t duk_get_error_code(duk_context *ctx, duk_idx_t index) {
@@ -19968,29 +20721,18 @@ DUK_INTERNAL void duk_push_tval(duk_context *ctx, duk_tval *tv) {
DUK_TVAL_INCREF(thr, tv); /* no side effects */
}
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-/* Right now only needed by the debugger. */
-DUK_INTERNAL void duk_push_unused(duk_context *ctx) {
- duk_hthread *thr;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv_slot);
-}
-#endif
-
DUK_EXTERNAL void duk_push_undefined(duk_context *ctx) {
duk_hthread *thr;
- duk_tval *tv_slot;
DUK_ASSERT_CTX_VALID(ctx);
thr = (duk_hthread *) ctx;
DUK__CHECK_SPACE();
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_UNDEFINED_ACTUAL(tv_slot);
+
+ /* Because value stack init policy is 'undefined above top',
+ * we don't need to write, just assert.
+ */
+ thr->valstack_top++;
+ DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top - 1));
}
DUK_EXTERNAL void duk_push_null(duk_context *ctx) {
@@ -20263,46 +21005,39 @@ DUK_EXTERNAL void duk_push_pointer(duk_context *ctx, void *val) {
DUK_TVAL_SET_POINTER(tv_slot, val);
}
-#define DUK__PUSH_THIS_FLAG_CHECK_COERC (1 << 0)
-#define DUK__PUSH_THIS_FLAG_TO_OBJECT (1 << 1)
-#define DUK__PUSH_THIS_FLAG_TO_STRING (1 << 2)
-
-DUK_LOCAL void duk__push_this_helper(duk_context *ctx, duk_small_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
+DUK_LOCAL void duk__push_this_helper(duk_context *ctx, duk_small_uint_t check_object_coercible) {
+ duk_hthread *thr;
+ duk_tval *tv_slot;
- DUK_ASSERT(thr != NULL);
DUK_ASSERT_CTX_VALID(ctx);
DUK_ASSERT_DISABLE(thr->callstack_top >= 0); /* avoid warning (unsigned) */
+ thr = (duk_hthread *) ctx;
DUK_ASSERT(thr->callstack_top <= thr->callstack_size);
+ DUK__CHECK_SPACE();
- if (thr->callstack_top == 0) {
- if (flags & DUK__PUSH_THIS_FLAG_CHECK_COERC) {
+ DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); /* because of valstack init policy */
+ tv_slot = thr->valstack_top++;
+
+ if (DUK_UNLIKELY(thr->callstack_top == 0)) {
+ if (check_object_coercible) {
goto type_error;
}
- duk_push_undefined(ctx);
+ /* 'undefined' already on stack top */
} else {
- duk_tval tv_tmp;
duk_tval *tv;
/* 'this' binding is just before current activation's bottom */
DUK_ASSERT(thr->valstack_bottom > thr->valstack);
tv = thr->valstack_bottom - 1;
- if (flags & DUK__PUSH_THIS_FLAG_CHECK_COERC) {
- if (DUK_TVAL_IS_UNDEFINED(tv) || DUK_TVAL_IS_NULL(tv)) {
- goto type_error;
- }
+ if (check_object_coercible &&
+ (DUK_TVAL_IS_UNDEFINED(tv) || DUK_TVAL_IS_NULL(tv))) {
+ /* XXX: better macro for DUK_TVAL_IS_UNDEFINED_OR_NULL(tv) */
+ goto type_error;
}
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- duk_push_tval(ctx, &tv_tmp);
- }
-
- if (flags & DUK__PUSH_THIS_FLAG_TO_OBJECT) {
- duk_to_object(ctx, -1);
- } else if (flags & DUK__PUSH_THIS_FLAG_TO_STRING) {
- duk_to_string(ctx, -1);
+ DUK_TVAL_SET_TVAL(tv_slot, tv);
+ DUK_TVAL_INCREF(thr, tv);
}
-
return;
type_error:
@@ -20312,13 +21047,13 @@ DUK_LOCAL void duk__push_this_helper(duk_context *ctx, duk_small_uint_t flags) {
DUK_EXTERNAL void duk_push_this(duk_context *ctx) {
DUK_ASSERT_CTX_VALID(ctx);
- duk__push_this_helper(ctx, 0 /*flags*/);
+ duk__push_this_helper(ctx, 0 /*check_object_coercible*/);
}
DUK_INTERNAL void duk_push_this_check_object_coercible(duk_context *ctx) {
DUK_ASSERT_CTX_VALID(ctx);
- duk__push_this_helper(ctx, DUK__PUSH_THIS_FLAG_CHECK_COERC /*flags*/);
+ duk__push_this_helper(ctx, 1 /*check_object_coercible*/);
}
DUK_INTERNAL duk_hobject *duk_push_this_coercible_to_object(duk_context *ctx) {
@@ -20326,8 +21061,8 @@ DUK_INTERNAL duk_hobject *duk_push_this_coercible_to_object(duk_context *ctx) {
DUK_ASSERT_CTX_VALID(ctx);
- duk__push_this_helper(ctx, DUK__PUSH_THIS_FLAG_CHECK_COERC |
- DUK__PUSH_THIS_FLAG_TO_OBJECT /*flags*/);
+ duk__push_this_helper(ctx, 1 /*check_object_coercible*/);
+ duk_to_object(ctx, -1);
h = duk_get_hobject(ctx, -1);
DUK_ASSERT(h != NULL);
return h;
@@ -20338,8 +21073,8 @@ DUK_INTERNAL duk_hstring *duk_push_this_coercible_to_string(duk_context *ctx) {
DUK_ASSERT_CTX_VALID(ctx);
- duk__push_this_helper(ctx, DUK__PUSH_THIS_FLAG_CHECK_COERC |
- DUK__PUSH_THIS_FLAG_TO_STRING /*flags*/);
+ duk__push_this_helper(ctx, 1 /*check_object_coercible*/);
+ duk_to_string(ctx, -1);
h = duk_get_hstring(ctx, -1);
DUK_ASSERT(h != NULL);
return h;
@@ -20869,7 +21604,7 @@ DUK_EXTERNAL duk_idx_t duk_push_c_lightfunc(duk_context *ctx, duk_c_function fun
return 0; /* not reached */
}
-DUK_INTERNAL duk_hbufferobject *duk_push_bufferobject(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx) {
+DUK_INTERNAL duk_hbufferobject *duk_push_bufferobject_raw(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_hbufferobject *obj;
duk_tval *tv_slot;
@@ -20898,6 +21633,134 @@ DUK_INTERNAL duk_hbufferobject *duk_push_bufferobject(duk_context *ctx, duk_uint
return obj;
}
+/* XXX: There's quite a bit of overlap with buffer creation handling in
+ * duk_bi_buffer.c. Look for overlap and refactor.
+ */
+#define DUK__PACK_ARGS(classnum,protobidx,elemtype,elemshift,isview) \
+ (((classnum) << 24) | ((protobidx) << 16) | ((elemtype) << 8) | ((elemshift) << 4) | (isview))
+
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
+static const duk_uint32_t duk__bufobj_flags_lookup[] = {
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_BUFFER, DUK_BIDX_BUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0), /* DUK_BUFOBJ_DUKTAPE_BUFFER */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_BUFFER, DUK_BIDX_NODEJS_BUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0), /* DUK_BUFOBJ_NODEJS_BUFFER */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_ARRAYBUFFER, DUK_BIDX_ARRAYBUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0), /* DUK_BUFOBJ_ARRAYBUFFER */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_DATAVIEW, DUK_BIDX_DATAVIEW_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 1), /* DUK_BUFOBJ_DATAVIEW */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT8ARRAY, DUK_BIDX_INT8ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_INT8, 0, 1), /* DUK_BUFOBJ_INT8ARRAY */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT8ARRAY, DUK_BIDX_UINT8ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 1), /* DUK_BUFOBJ_UINT8ARRAY */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY, DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED, 0, 1), /* DUK_BUFOBJ_UINT8CLAMPEDARRAY */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT16ARRAY, DUK_BIDX_INT16ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_INT16, 1, 1), /* DUK_BUFOBJ_INT16ARRAY */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT16ARRAY, DUK_BIDX_UINT16ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT16, 1, 1), /* DUK_BUFOBJ_UINT16ARRAY */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT32ARRAY, DUK_BIDX_INT32ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_INT32, 2, 1), /* DUK_BUFOBJ_INT32ARRAY */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT32ARRAY, DUK_BIDX_UINT32ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT32, 2, 1), /* DUK_BUFOBJ_UINT32ARRAY */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_FLOAT32ARRAY, DUK_BIDX_FLOAT32ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_FLOAT32, 2, 1), /* DUK_BUFOBJ_FLOAT32ARRAY */
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_FLOAT64ARRAY, DUK_BIDX_FLOAT64ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_FLOAT64, 3, 1) /* DUK_BUFOBJ_FLOAT64ARRAY */
+};
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+/* Only allow Duktape.Buffer when support disabled. */
+static const duk_uint32_t duk__bufobj_flags_lookup[] = {
+ DUK__PACK_ARGS(DUK_HOBJECT_CLASS_BUFFER, DUK_BIDX_BUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0) /* DUK_BUFOBJ_DUKTAPE_BUFFER */
+};
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#undef DUK__PACK_ARGS
+
+DUK_EXTERNAL void duk_push_buffer_object(duk_context *ctx, duk_idx_t idx_buffer, duk_size_t byte_offset, duk_size_t byte_length, duk_uint_t flags) {
+ duk_hthread *thr;
+ duk_hbufferobject *h_bufobj;
+ duk_hbuffer *h_val;
+ duk_uint32_t tmp;
+ duk_uint_t classnum;
+ duk_uint_t protobidx;
+ duk_uint_t lookupidx;
+ duk_uint_t uint_offset, uint_length, uint_added;
+
+ DUK_ASSERT_CTX_VALID(ctx);
+ thr = (duk_hthread *) ctx;
+ DUK_UNREF(thr);
+
+ /* The underlying types for offset/length in duk_hbufferobject is
+ * duk_uint_t; make sure argument values fit and that offset + length
+ * does not wrap.
+ */
+ uint_offset = (duk_uint_t) byte_offset;
+ uint_length = (duk_uint_t) byte_length;
+ if (sizeof(duk_size_t) != sizeof(duk_uint_t)) {
+ if ((duk_size_t) uint_offset != byte_offset || (duk_size_t) uint_length != byte_length) {
+ goto range_error;
+ }
+ }
+ uint_added = uint_offset + uint_length;
+ if (uint_added < uint_offset) {
+ goto range_error;
+ }
+ DUK_ASSERT(uint_added >= uint_offset && uint_added >= uint_length);
+
+ DUK_ASSERT_DISABLE(flags >= 0); /* flags is unsigned */
+ lookupidx = flags & 0x0f; /* 4 low bits */
+ if (lookupidx >= sizeof(duk__bufobj_flags_lookup) / sizeof(duk_uint32_t)) {
+ goto arg_error;
+ }
+ tmp = duk__bufobj_flags_lookup[lookupidx];
+ classnum = tmp >> 24;
+ protobidx = (tmp >> 16) & 0xff;
+
+ h_val = duk_require_hbuffer(ctx, idx_buffer);
+ DUK_ASSERT(h_val != NULL);
+
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(classnum),
+ protobidx);
+ DUK_ASSERT(h_bufobj != NULL);
+
+ h_bufobj->buf = h_val;
+ DUK_HBUFFER_INCREF(thr, h_val);
+ h_bufobj->offset = uint_offset;
+ h_bufobj->length = uint_length;
+ h_bufobj->shift = (tmp >> 4) & 0x0f;
+ h_bufobj->elem_type = (tmp >> 8) & 0xff;
+ h_bufobj->is_view = tmp & 0x0f;
+ DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
+
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
+ /* TypedArray views need an automatic ArrayBuffer which must be
+ * provided as .buffer property of the view. Just create a new
+ * ArrayBuffer sharing the same underlying buffer.
+ */
+ if (flags & DUK_BUFOBJ_CREATE_ARRBUF) {
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER),
+ DUK_BIDX_ARRAYBUFFER_PROTOTYPE);
+
+ DUK_ASSERT(h_bufobj != NULL);
+
+ h_bufobj->buf = h_val;
+ DUK_HBUFFER_INCREF(thr, h_val);
+ h_bufobj->offset = uint_offset;
+ h_bufobj->length = uint_length;
+ DUK_ASSERT(h_bufobj->shift == 0);
+ h_bufobj->elem_type = DUK_HBUFFEROBJECT_ELEM_UINT8;
+ DUK_ASSERT(h_bufobj->is_view == 0);
+ DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
+
+ duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LC_BUFFER, DUK_PROPDESC_FLAGS_NONE);
+ duk_compact(ctx, -1);
+ }
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+
+ return;
+
+ range_error:
+ DUK_ERROR(thr, DUK_ERR_RANGE_ERROR, DUK_STR_INVALID_CALL_ARGS);
+ return; /* not reached */
+
+ arg_error:
+ DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_INVALID_CALL_ARGS);
+ return; /* not reached */
+}
+
DUK_EXTERNAL duk_idx_t duk_push_error_object_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_idx_t ret;
@@ -20988,6 +21851,7 @@ DUK_EXTERNAL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_sm
duk_hthread *thr = (duk_hthread *) ctx;
duk_tval *tv_slot;
duk_hbuffer *h;
+ void *buf_data;
DUK_ASSERT_CTX_VALID(ctx);
@@ -21001,7 +21865,7 @@ DUK_EXTERNAL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_sm
DUK_ERROR(thr, DUK_ERR_RANGE_ERROR, DUK_STR_BUFFER_TOO_LONG);
}
- h = duk_hbuffer_alloc(thr->heap, size, flags);
+ h = duk_hbuffer_alloc(thr->heap, size, flags, &buf_data);
if (!h) {
DUK_ERROR(thr, DUK_ERR_ALLOC_ERROR, DUK_STR_ALLOC_FAILED);
}
@@ -21011,7 +21875,7 @@ DUK_EXTERNAL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_sm
DUK_HBUFFER_INCREF(thr, h);
thr->valstack_top++;
- return DUK_HBUFFER_GET_DATA_PTR(thr->heap, h);
+ return (void *) buf_data;
}
DUK_EXTERNAL duk_idx_t duk_push_heapptr(duk_context *ctx, void *ptr) {
@@ -21098,16 +21962,17 @@ DUK_INTERNAL void duk_push_hobject_bidx(duk_context *ctx, duk_small_int_t builti
DUK_EXTERNAL void duk_pop_n(duk_context *ctx, duk_idx_t count) {
duk_hthread *thr = (duk_hthread *) ctx;
+ duk_tval *tv;
DUK_ASSERT_CTX_VALID(ctx);
- if (count < 0) {
+ if (DUK_UNLIKELY(count < 0)) {
DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_INVALID_COUNT);
return;
}
DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- if ((duk_size_t) (thr->valstack_top - thr->valstack_bottom) < (duk_size_t) count) {
+ if (DUK_UNLIKELY((duk_size_t) (thr->valstack_top - thr->valstack_bottom) < (duk_size_t) count)) {
DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_POP_TOO_MANY);
}
@@ -21121,36 +21986,58 @@ DUK_EXTERNAL void duk_pop_n(duk_context *ctx, duk_idx_t count) {
* instability), inline code.
*/
-#ifdef DUK_USE_REFERENCE_COUNTING
- while (count > 0) {
- duk_tval tv_tmp;
- duk_tval *tv;
+ /* XXX: optimize loops */
+#if defined(DUK_USE_REFERENCE_COUNTING)
+ while (count > 0) {
+ count--;
tv = --thr->valstack_top; /* tv points to element just below prev top */
DUK_ASSERT(tv >= thr->valstack_bottom);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
- count--;
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
}
#else
+ tv = thr->valstack_top;
while (count > 0) {
- duk_tval *tv;
-
- tv = --thr->valstack_top;
- DUK_ASSERT(tv >= thr->valstack_bottom);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv);
count--;
+ tv--;
+ DUK_ASSERT(tv >= thr->valstack_bottom);
+ DUK_TVAL_SET_UNDEFINED(tv);
}
+ thr->valstack_top = tv;
#endif
DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
}
+/* Popping one element is called so often that when footprint is not an issue,
+ * compile a specialized function for it.
+ */
+#if defined(DUK_USE_PREFER_SIZE)
DUK_EXTERNAL void duk_pop(duk_context *ctx) {
DUK_ASSERT_CTX_VALID(ctx);
duk_pop_n(ctx, 1);
}
+#else
+DUK_EXTERNAL void duk_pop(duk_context *ctx) {
+ duk_hthread *thr = (duk_hthread *) ctx;
+ duk_tval *tv;
+ DUK_ASSERT_CTX_VALID(ctx);
+
+ DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
+ if (DUK_UNLIKELY(thr->valstack_top == thr->valstack_bottom)) {
+ DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_POP_TOO_MANY);
+ }
+
+ tv = --thr->valstack_top; /* tv points to element just below prev top */
+ DUK_ASSERT(tv >= thr->valstack_bottom);
+#ifdef DUK_USE_REFERENCE_COUNTING
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
+#else
+ DUK_TVAL_SET_UNDEFINED(tv);
+#endif
+ DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
+}
+#endif /* !DUK_USE_PREFER_SIZE */
DUK_EXTERNAL void duk_pop_2(duk_context *ctx) {
DUK_ASSERT_CTX_VALID(ctx);
@@ -21182,6 +22069,12 @@ DUK_EXTERNAL void duk_throw(duk_context *ctx) {
* just before an error is thrown.
*/
+ /* Sync so that augmentation sees up-to-date activations, NULL
+ * thr->ptr_curr_pc so that it's not used if side effects occur
+ * in augmentation or longjmp handling.
+ */
+ duk_hthread_sync_and_null_currpc(thr);
+
#if defined(DUK_USE_AUGMENT_ERROR_THROW)
DUK_DDD(DUK_DDDPRINT("THROW ERROR (API): %!dT (before throw augment)", (duk_tval *) duk_get_tval(ctx, -1)));
duk_err_augment_error_throw(thr);
@@ -21423,7 +22316,7 @@ DUK_LOCAL void duk__concat_and_join_helper(duk_context *ctx, duk_idx_t count_in,
h = duk_to_hstring(ctx, -((duk_idx_t) count) - 1);
DUK_ASSERT(h != NULL);
- /* A bit tricky overflow test, see doc/code-issues.txt. */
+ /* A bit tricky overflow test, see doc/code-issues.rst. */
t1 = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h);
t2 = (duk_size_t) (count - 1);
limit = (duk_size_t) DUK_HSTRING_MAX_BYTELEN;
@@ -23338,6 +24231,7 @@ DUK_INTERNAL duk_ret_t duk_bi_boolean_constructor(duk_context *ctx) {
* Misc helpers
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Map DUK_HBUFFEROBJECT_ELEM_xxx to duk_hobject class number.
* Sync with duk_hbufferobject.h and duk_hobject.h.
*/
@@ -23352,11 +24246,13 @@ static const duk_uint8_t duk__buffer_class_from_elemtype[9] = {
DUK_HOBJECT_CLASS_FLOAT32ARRAY,
DUK_HOBJECT_CLASS_FLOAT64ARRAY
};
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Map DUK_HBUFFEROBJECT_ELEM_xxx to prototype object built-in index.
* Sync with duk_hbufferobject.h.
*/
-static const duk_uint16_t duk__buffer_proto_from_elemtype[9] = {
+static const duk_uint8_t duk__buffer_proto_from_elemtype[9] = {
DUK_BIDX_UINT8ARRAY_PROTOTYPE,
DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE,
DUK_BIDX_INT8ARRAY_PROTOTYPE,
@@ -23367,8 +24263,10 @@ static const duk_uint16_t duk__buffer_proto_from_elemtype[9] = {
DUK_BIDX_FLOAT32ARRAY_PROTOTYPE,
DUK_BIDX_FLOAT64ARRAY_PROTOTYPE
};
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-/* Map DUK_HBUFFEROBJECT_ELEM_xxx to byte size.
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
+/* Map DUK__FLX_xxx to byte size.
*/
static const duk_uint8_t duk__buffer_nbytes_from_fldtype[6] = {
1, /* DUK__FLD_8BIT */
@@ -23378,7 +24276,9 @@ static const duk_uint8_t duk__buffer_nbytes_from_fldtype[6] = {
8, /* DUK__FLD_DOUBLE */
0 /* DUK__FLD_VARINT; not relevant here */
};
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Bitfield for each DUK_HBUFFEROBJECT_ELEM_xxx indicating which element types
* are compatible with a blind byte copy for the TypedArray set() method (also
* used for TypedArray constructor). Array index is target buffer elem type,
@@ -23424,7 +24324,9 @@ static duk_uint16_t duk__buffer_elemtype_copy_compatible[9] = {
/* xxx -> DUK_HBUFFEROBJECT_ELEM_FLOAT64 */
(1U << DUK_HBUFFEROBJECT_ELEM_FLOAT64)
};
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Shared helper. */
DUK_LOCAL duk_hbufferobject *duk__getrequire_bufobj_this(duk_context *ctx, duk_bool_t throw_flag) {
duk_hthread *thr;
@@ -23450,19 +24352,25 @@ DUK_LOCAL duk_hbufferobject *duk__getrequire_bufobj_this(duk_context *ctx, duk_b
}
return NULL;
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Check that 'this' is a duk_hbufferobject and return a pointer to it. */
DUK_LOCAL duk_hbufferobject *duk__get_bufobj_this(duk_context *ctx) {
return duk__getrequire_bufobj_this(ctx, 0);
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Check that 'this' is a duk_hbufferobject and return a pointer to it
* (NULL if not).
*/
DUK_LOCAL duk_hbufferobject *duk__require_bufobj_this(duk_context *ctx) {
return duk__getrequire_bufobj_this(ctx, 1);
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Check that value is a duk_hbufferobject and return a pointer to it. */
DUK_LOCAL duk_hbufferobject *duk__require_bufobj_value(duk_context *ctx, duk_idx_t index) {
duk_hthread *thr;
@@ -23486,7 +24394,9 @@ DUK_LOCAL duk_hbufferobject *duk__require_bufobj_value(duk_context *ctx, duk_idx
}
DUK_ERROR(thr, DUK_ERR_TYPE_ERROR, DUK_STR_NOT_BUFFER);
+ return NULL; /* not reachable */
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
DUK_LOCAL void duk__set_bufobj_buffer(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_hbuffer *h_val) {
duk_hthread *thr;
@@ -23509,6 +24419,7 @@ DUK_LOCAL void duk__set_bufobj_buffer(duk_context *ctx, duk_hbufferobject *h_buf
DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
}
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_LOCAL duk_hbufferobject *duk__push_arraybuffer_with_length(duk_context *ctx, duk_uint_t len) {
duk_hbuffer *h_val;
duk_hbufferobject *h_bufobj;
@@ -23517,11 +24428,11 @@ DUK_LOCAL duk_hbufferobject *duk__push_arraybuffer_with_length(duk_context *ctx,
h_val = (duk_hbuffer *) duk_get_hbuffer(ctx, -1);
DUK_ASSERT(h_val != NULL);
- h_bufobj = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER),
- DUK_BIDX_ARRAYBUFFER_PROTOTYPE);
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER),
+ DUK_BIDX_ARRAYBUFFER_PROTOTYPE);
DUK_ASSERT(h_bufobj != NULL);
duk__set_bufobj_buffer(ctx, h_bufobj, h_val);
@@ -23529,7 +24440,9 @@ DUK_LOCAL duk_hbufferobject *duk__push_arraybuffer_with_length(duk_context *ctx,
return h_bufobj;
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Shared offset/length coercion helper. */
DUK_LOCAL void duk__resolve_offset_opt_length(duk_context *ctx,
duk_hbufferobject *h_bufarg,
@@ -23589,7 +24502,9 @@ DUK_LOCAL void duk__resolve_offset_opt_length(duk_context *ctx,
fail_range:
duk_error(thr, DUK_ERR_RANGE_ERROR, DUK_STR_INVALID_CALL_ARGS);
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Shared lenient buffer length clamping helper. No negative indices, no
* element/byte shifting.
*/
@@ -23625,7 +24540,9 @@ DUK_LOCAL void duk__clamp_startend_nonegidx_noshift(duk_context *ctx,
*out_start_offset = start_offset;
*out_end_offset = end_offset;
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Shared lenient buffer length clamping helper. Indices are treated as
* element indices (though output values are byte offsets) which only
* really matters for TypedArray views as other buffer object have a zero
@@ -23691,6 +24608,7 @@ DUK_LOCAL void duk__clamp_startend_negidx_shifted(duk_context *ctx,
*out_start_offset = start_offset;
*out_end_offset = end_offset;
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Indexed read/write helpers (also used from outside this file)
@@ -23703,9 +24621,13 @@ DUK_INTERNAL void duk_hbufferobject_push_validated_read(duk_context *ctx, duk_hb
switch (h_bufobj->elem_type) {
case DUK_HBUFFEROBJECT_ELEM_UINT8:
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
case DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED:
+#endif
duk_push_uint(ctx, (duk_uint_t) du.uc[0]);
break;
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
+ /* These are not needed when only Duktape.Buffer is supported. */
case DUK_HBUFFEROBJECT_ELEM_INT8:
duk_push_int(ctx, (duk_int_t) (duk_int8_t) du.uc[0]);
break;
@@ -23727,6 +24649,7 @@ DUK_INTERNAL void duk_hbufferobject_push_validated_read(duk_context *ctx, duk_hb
case DUK_HBUFFEROBJECT_ELEM_FLOAT64:
duk_push_number(ctx, (duk_double_t) du.d);
break;
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
default:
DUK_UNREACHABLE();
}
@@ -23747,6 +24670,8 @@ DUK_INTERNAL void duk_hbufferobject_validated_write(duk_context *ctx, duk_hbuffe
case DUK_HBUFFEROBJECT_ELEM_UINT8:
du.uc[0] = (duk_uint8_t) duk_to_uint32(ctx, -1);
break;
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
+ /* These are not needed when only Duktape.Buffer is supported. */
case DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED:
du.uc[0] = (duk_uint8_t) duk_to_uint8clamped(ctx, -1);
break;
@@ -23771,6 +24696,7 @@ DUK_INTERNAL void duk_hbufferobject_validated_write(duk_context *ctx, duk_hbuffe
case DUK_HBUFFEROBJECT_ELEM_FLOAT64:
du.d = (duk_double_t) duk_to_number(ctx, -1);
break;
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
default:
DUK_UNREACHABLE();
}
@@ -23864,11 +24790,11 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_constructor(duk_context *ctx) {
h_val = duk_get_hbuffer(ctx, -1);
DUK_ASSERT(h_val != NULL);
- h_bufobj = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
- DUK_BIDX_BUFFER_PROTOTYPE);
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
+ DUK_BIDX_BUFFER_PROTOTYPE);
DUK_ASSERT(h_bufobj != NULL);
duk__set_bufobj_buffer(ctx, h_bufobj, h_val);
@@ -23884,6 +24810,7 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_constructor(duk_context *ctx) {
* Node.js Buffer: constructor
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) {
/* Internal class is Object: Object.prototype.toString.call(new Buffer(0))
* prints "[object Object]".
@@ -23935,11 +24862,11 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) {
h_buf = duk_get_hbuffer(ctx, -1);
DUK_ASSERT(h_buf != NULL);
- h_bufobj = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
- DUK_BIDX_NODEJS_BUFFER_PROTOTYPE);
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
+ DUK_BIDX_NODEJS_BUFFER_PROTOTYPE);
DUK_ASSERT(h_bufobj != NULL);
h_bufobj->buf = h_buf;
@@ -23952,11 +24879,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) {
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* ArrayBuffer, DataView, and TypedArray constructors
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) {
duk_hbufferobject *h_bufobj;
duk_hbuffer *h_val;
@@ -23986,11 +24920,11 @@ DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) {
DUK_ASSERT(h_val != NULL);
}
- h_bufobj = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER),
- DUK_BIDX_ARRAYBUFFER_PROTOTYPE);
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER),
+ DUK_BIDX_ARRAYBUFFER_PROTOTYPE);
DUK_ASSERT(h_bufobj != NULL);
duk__set_bufobj_buffer(ctx, h_bufobj, h_val);
@@ -24001,12 +24935,20 @@ DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) {
fail_length:
return DUK_RET_RANGE_ERROR;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+
/* Format of magic, bits:
* 0...1: elem size shift (0-3)
* 2...5: elem type (DUK_HBUFFEROBJECT_ELEM_xxx)
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) {
duk_hthread *thr;
duk_tval *tv;
@@ -24121,11 +25063,11 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) {
DUK_ASSERT(byte_offset + byte_length <= h_bufarg->length);
DUK_ASSERT((elem_length << shift) == byte_length);
- h_bufobj = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(class_num),
- proto_bidx);
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(class_num),
+ proto_bidx);
h_val = h_bufarg->buf;
if (h_val == NULL) {
return DUK_RET_TYPE_ERROR;
@@ -24220,11 +25162,11 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) {
DUK_ASSERT(h_val != NULL);
/* Push the resulting view object and attach the ArrayBuffer. */
- h_bufobj = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(class_num),
- proto_bidx);
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(class_num),
+ proto_bidx);
h_bufobj->buf = h_val;
DUK_HBUFFER_INCREF(thr, h_val);
@@ -24344,7 +25286,14 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) {
fail_arguments:
return DUK_RET_RANGE_ERROR;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) {
duk_hbufferobject *h_bufarg;
duk_hbufferobject *h_bufobj;
@@ -24364,11 +25313,11 @@ DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) {
DUK_ASSERT(offset <= h_bufarg->length);
DUK_ASSERT(offset + length <= h_bufarg->length);
- h_bufobj = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATAVIEW),
- DUK_BIDX_DATAVIEW_PROTOTYPE);
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATAVIEW),
+ DUK_BIDX_DATAVIEW_PROTOTYPE);
h_val = h_bufarg->buf;
if (h_val == NULL) {
@@ -24400,11 +25349,18 @@ DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) {
DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* ArrayBuffer.isView()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx) {
duk_hobject *h_obj;
duk_bool_t ret = 0;
@@ -24416,11 +25372,18 @@ DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx) {
duk_push_boolean(ctx, ret);
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer: toString([encoding], [start], [end])
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx) {
duk_hthread *thr;
duk_hbufferobject *h_this;
@@ -24466,11 +25429,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx) {
type_error:
return DUK_RET_TYPE_ERROR;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Duktape.Buffer: toString(), valueOf()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_buffer_prototype_tostring_shared(duk_context *ctx) {
duk_hthread *thr;
duk_tval *tv;
@@ -24520,11 +25490,18 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_prototype_tostring_shared(duk_context *ctx)
type_error:
return DUK_RET_TYPE_ERROR;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_buffer_prototype_tostring_shared(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.prototype: toJSON()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) {
duk_hthread *thr;
duk_hbufferobject *h_this;
@@ -24562,6 +25539,12 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) {
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.prototype.equals()
@@ -24569,6 +25552,7 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) {
* Node.js Buffer.compare()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx) {
duk_hthread *thr;
duk_small_uint_t magic;
@@ -24617,11 +25601,18 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx) {
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.prototype.fill()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx) {
duk_hthread *thr;
duk_hbufferobject *h_this;
@@ -24687,11 +25678,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx) {
duk_push_this(ctx);
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.prototype.write(string, [offset], [length], [encoding])
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx) {
duk_hthread *thr;
duk_hbufferobject *h_this;
@@ -24731,11 +25729,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx) {
duk_push_uint(ctx, length);
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.prototype.copy()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) {
duk_hthread *thr;
duk_hbufferobject *h_this;
@@ -24839,6 +25844,12 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) {
fail_bounds:
return DUK_RET_RANGE_ERROR;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* TypedArray.prototype.set()
@@ -24876,6 +25887,7 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) {
* See test-bi-typedarray-proto-set.js.
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) {
duk_hthread *thr;
duk_hbufferobject *h_this;
@@ -25034,7 +26046,7 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) {
(void *) p_dst_base, (long) dst_length));
if (p_src_base >= p_dst_base + dst_length || /* source starts after dest ends */
- p_src_base + src_length < p_dst_base) { /* source ends before dest starts */
+ p_src_base + src_length <= p_dst_base) { /* source ends before dest starts */
no_overlap = 1;
}
@@ -25128,6 +26140,12 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) {
return 0;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.prototype.slice([start], [end])
@@ -25147,6 +26165,7 @@ DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) {
* - TypedArray .subarray() arguments are element indices, not byte offsets
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) {
duk_hthread *thr;
duk_small_int_t magic;
@@ -25191,11 +26210,11 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) {
*/
res_class_num = DUK_HOBJECT_GET_CLASS_NUMBER((duk_hobject *) h_this);
- h_bufobj = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(res_class_num),
- DUK_BIDX_OBJECT_PROTOTYPE); /* replaced */
+ h_bufobj = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(res_class_num),
+ DUK_BIDX_OBJECT_PROTOTYPE); /* replaced */
DUK_ASSERT(h_bufobj != NULL);
res_proto = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) h_this); /* may be NULL */
DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, (duk_hobject *) h_bufobj, res_proto);
@@ -25258,11 +26277,18 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) {
DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.isEncoding()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx) {
const char *encoding;
@@ -25273,11 +26299,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx) {
duk_push_boolean(ctx, DUK_STRCMP(encoding, "utf8") == 0);
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.isBuffer()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx) {
duk_hthread *thr;
duk_tval *tv;
@@ -25307,11 +26340,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx) {
duk_push_boolean(ctx, ret);
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.byteLength()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx) {
const char *str;
duk_size_t len;
@@ -25326,11 +26366,18 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx) {
duk_push_size_t(ctx, len);
return 1;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Node.js Buffer.concat()
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) {
duk_hthread *thr;
duk_hobject *h_arg;
@@ -25390,11 +26437,11 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) {
return DUK_RET_RANGE_ERROR;
}
- h_bufres = duk_push_bufferobject(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
- DUK_BIDX_NODEJS_BUFFER_PROTOTYPE);
+ h_bufres = duk_push_bufferobject_raw(ctx,
+ DUK_HOBJECT_FLAG_EXTENSIBLE |
+ DUK_HOBJECT_FLAG_BUFFEROBJECT |
+ DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
+ DUK_BIDX_NODEJS_BUFFER_PROTOTYPE);
DUK_ASSERT(h_bufres != NULL);
p = (duk_uint8_t *) duk_push_fixed_buffer(ctx, total_length);
@@ -25438,6 +26485,12 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) {
return 1; /* return h_bufres */
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
/*
* Shared readfield and writefield methods
@@ -25446,6 +26499,7 @@ DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) {
* types. All offsets are byte based so no offset shifting is needed.
*/
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* Format of magic, bits:
* 0...1: field type; 0=uint8, 1=uint16, 2=uint32, 3=float, 4=double, 5=unused, 6=unused, 7=unused
* 3: endianness: 0=little, 1=big
@@ -25715,7 +26769,14 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_readfield(duk_context *ctx) {
return DUK_RET_RANGE_ERROR;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_buffer_readfield(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
/* XXX: split into separate functions for each field type? */
DUK_INTERNAL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx) {
duk_hthread *thr;
@@ -25986,6 +27047,12 @@ DUK_INTERNAL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx) {
}
return DUK_RET_RANGE_ERROR;
}
+#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
+DUK_INTERNAL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ return DUK_RET_UNSUPPORTED_ERROR;
+}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
#undef DUK__FLD_8BIT
#undef DUK__FLD_16BIT
@@ -26374,7 +27441,7 @@ DUK_LOCAL duk_bool_t duk__parse_string_iso8601_subset(duk_context *ctx, const ch
* Note in particular that we must parse whatever toString(), toUTCString(),
* and toISOString() can produce; see E5.1 Section 15.9.4.2.
*
- * Returns 1 to allow tailcalling.
+ * Returns 1 to allow tail calling.
*
* There is much room for improvement here with respect to supporting
* alternative datetime formats. For instance, V8 parses '2012-01-01' as
@@ -26934,7 +28001,7 @@ DUK_LOCAL duk_double_t duk__push_this_get_timeval(duk_context *ctx, duk_small_ui
}
/* Set timeval to 'this' from dparts, push the new time value onto the
- * value stack and return 1 (caller can then tailcall us). Expects
+ * value stack and return 1 (caller can then tail call us). Expects
* the value stack to contain 'this' on the stack top.
*/
DUK_LOCAL duk_ret_t duk__set_this_timeval_from_dparts(duk_context *ctx, duk_double_t *dparts, duk_small_uint_t flags) {
@@ -26947,7 +28014,7 @@ DUK_LOCAL duk_ret_t duk__set_this_timeval_from_dparts(duk_context *ctx, duk_doub
duk_dup_top(ctx); /* -> [ ... this timeval_new timeval_new ] */
duk_put_prop_stridx(ctx, -3, DUK_STRIDX_INT_VALUE);
- /* stack top: new time value, return 1 to allow tailcalls */
+ /* stack top: new time value, return 1 to allow tail calls */
return 1;
}
@@ -27066,7 +28133,7 @@ DUK_LOCAL duk_ret_t duk__to_string_helper(duk_context *ctx, duk_small_uint_t fla
/* Helper for component getter calls: check 'this' binding, get the
* internal time value, split it into parts (either as UTC time or
* local time), push a specified component as a return value to the
- * value stack and return 1 (caller can then tailcall us).
+ * value stack and return 1 (caller can then tail call us).
*/
DUK_LOCAL duk_ret_t duk__get_part_helper(duk_context *ctx, duk_small_uint_t flags_and_idx) {
duk_double_t d;
@@ -27098,7 +28165,7 @@ DUK_LOCAL duk_ret_t duk__get_part_helper(duk_context *ctx, duk_small_uint_t flag
* local time), modify one or more components as specified, recompute
* the time value, set it as the internal value. Finally, push the
* new time value as a return value to the value stack and return 1
- * (caller can then tailcall us).
+ * (caller can then tail call us).
*/
DUK_LOCAL duk_ret_t duk__set_part_helper(duk_context *ctx, duk_small_uint_t flags_and_maxnargs) {
duk_double_t d;
@@ -28234,12 +29301,15 @@ DUK_INTERNAL duk_ret_t duk_bi_duktape_object_info(duk_context *ctx) {
case DUK_HTYPE_BUFFER: {
duk_hbuffer *h_buf = (duk_hbuffer *) h;
if (DUK_HBUFFER_HAS_DYNAMIC(h_buf)) {
- /* XXX: when alloc_size == 0, dynamic buf ptr may now be NULL, in which case
- * the second allocation does not exist.
- */
- duk_hbuffer_dynamic *h_dyn = (duk_hbuffer_dynamic *) h;
- duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_dynamic)));
- duk_push_uint(ctx, (duk_uint_t) (DUK_HBUFFER_DYNAMIC_GET_SIZE(h_dyn)));
+ if (DUK_HBUFFER_HAS_EXTERNAL(h_buf)) {
+ duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_external)));
+ } else {
+ /* When alloc_size == 0 the second allocation may not
+ * actually exist.
+ */
+ duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_dynamic)));
+ }
+ duk_push_uint(ctx, (duk_uint_t) (DUK_HBUFFER_GET_SIZE(h_buf)));
} else {
duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_fixed) + DUK_HBUFFER_GET_SIZE(h_buf) + 1));
}
@@ -28281,14 +29351,11 @@ DUK_INTERNAL duk_ret_t duk_bi_duktape_object_act(duk_context *ctx) {
duk_push_tval(ctx, &act->tv_func);
- pc = (duk_uint_fast32_t) act->pc;
- if (pc > 0) {
- /* Relevant PC is just before current one because PC is
- * post-incremented. This should match what error augment
- * code does.
- */
- pc--;
- }
+ /* Relevant PC is just before current one because PC is
+ * post-incremented. This should match what error augment
+ * code does.
+ */
+ pc = duk_hthread_get_act_prev_pc(thr, act);
duk_push_uint(ctx, (duk_uint_t) pc);
#if defined(DUK_USE_PC2LINE)
@@ -29863,6 +30930,8 @@ DUK_INTERNAL duk_ret_t duk_bi_global_object_print_helper(duk_context *ctx) {
duk_file *f_out;
#endif
+ DUK_UNREF(thr);
+
magic = duk_get_current_magic(ctx);
DUK_UNREF(magic);
@@ -29917,7 +30986,7 @@ DUK_INTERNAL duk_ret_t duk_bi_global_object_print_helper(duk_context *ctx) {
p += sz_str;
*p++ = (duk_uint8_t) (i == nargs - 1 ? DUK_ASC_LF : DUK_ASC_SPACE);
}
- DUK_ASSERT((const duk_uint8_t *) p == buf + sz_total);
+ DUK_ASSERT((const duk_uint8_t *) p == buf + sz_buf);
#endif /* DUK_USE_PREFER_SIZE */
} else {
buf = (const duk_uint8_t *) &nl;
@@ -30397,7 +31466,7 @@ DUK_LOCAL_DECL void duk__emit_2(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch1,
DUK_LOCAL_DECL void duk__unemit_1(duk_json_enc_ctx *js_ctx);
#endif
DUK_LOCAL_DECL void duk__emit_hstring(duk_json_enc_ctx *js_ctx, duk_hstring *h);
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
+#if defined(DUK_USE_FASTINT)
DUK_LOCAL_DECL void duk__emit_cstring(duk_json_enc_ctx *js_ctx, const char *p);
#endif
DUK_LOCAL_DECL void duk__emit_stridx(duk_json_enc_ctx *js_ctx, duk_small_uint_t stridx);
@@ -31367,7 +32436,7 @@ DUK_LOCAL void duk__dec_reviver_walk(duk_json_dec_ctx *js_ctx) {
#define DUK__EMIT_1(js_ctx,ch) duk__emit_1((js_ctx), (duk_uint_fast8_t) (ch))
#define DUK__EMIT_2(js_ctx,ch1,ch2) duk__emit_2((js_ctx), (duk_uint_fast8_t) (ch1), (duk_uint_fast8_t) (ch2))
#define DUK__EMIT_HSTR(js_ctx,h) duk__emit_hstring((js_ctx), (h))
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
+#if defined(DUK_USE_FASTINT) || defined(DUK_USE_JX) || defined(DUK_USE_JC)
#define DUK__EMIT_CSTR(js_ctx,p) duk__emit_cstring((js_ctx), (p))
#endif
#define DUK__EMIT_STRIDX(js_ctx,i) duk__emit_stridx((js_ctx), (i))
@@ -31387,7 +32456,7 @@ DUK_LOCAL void duk__emit_hstring(duk_json_enc_ctx *js_ctx, duk_hstring *h) {
DUK_BW_WRITE_ENSURE_HSTRING(js_ctx->thr, &js_ctx->bw, h);
}
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
+#if defined(DUK_USE_FASTINT) || defined(DUK_USE_JX) || defined(DUK_USE_JC)
DUK_LOCAL void duk__emit_cstring(duk_json_enc_ctx *js_ctx, const char *str) {
DUK_BW_WRITE_ENSURE_CSTRING(js_ctx->thr, &js_ctx->bw, str);
}
@@ -32356,6 +33425,8 @@ DUK_LOCAL void duk__enc_value2(duk_json_enc_ctx *js_ctx) {
#endif
default: {
/* number */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
+ DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
/* XXX: A fast path for usual integers would be useful when
* fastint support is not enabled.
*/
@@ -32489,9 +33560,13 @@ DUK_LOCAL duk_bool_t duk__json_stringify_fast_value(duk_json_enc_ctx *js_ctx, du
/* If object has a .toJSON() property, we can't be certain
* that it wouldn't mutate any value arbitrarily, so bail
* out of the fast path.
+ *
+ * If an object is a Proxy we also can't avoid side effects
+ * so abandon.
*/
- if (duk_hobject_hasprop_raw(js_ctx->thr, obj, DUK_HTHREAD_STRING_TO_JSON(js_ctx->thr))) {
- DUK_DD(DUK_DDPRINT("object has a .toJSON property, abort fast path"));
+ if (duk_hobject_hasprop_raw(js_ctx->thr, obj, DUK_HTHREAD_STRING_TO_JSON(js_ctx->thr)) ||
+ DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(obj)) {
+ DUK_DD(DUK_DDPRINT("object has a .toJSON property or object is a Proxy, abort fast path"));
goto abort_fastpath;
}
@@ -32598,7 +33673,7 @@ DUK_LOCAL duk_bool_t duk__json_stringify_fast_value(duk_json_enc_ctx *js_ctx, du
tv_val = DUK_HOBJECT_A_GET_VALUE_PTR(js_ctx->thr->heap, obj, i);
- if (DUK_UNLIKELY(DUK_TVAL_IS_UNDEFINED_UNUSED(tv_val))) {
+ if (DUK_UNLIKELY(DUK_TVAL_IS_UNUSED(tv_val))) {
/* Gap in array; check for inherited property,
* bail out if one exists. This should be enough
* to support gappy arrays for all practical code.
@@ -32700,6 +33775,9 @@ DUK_LOCAL duk_bool_t duk__json_stringify_fast_value(duk_json_enc_ctx *js_ctx, du
/* XXX: A fast path for usual integers would be useful when
* fastint support is not enabled.
*/
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
+ DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
+
/* XXX: Stack discipline is annoying, could be changed in numconv. */
duk_push_tval((duk_context *) js_ctx->thr, tv);
duk__enc_double(js_ctx);
@@ -32780,7 +33858,7 @@ void duk_bi_json_parse_helper(duk_context *ctx,
#ifdef DUK_USE_EXPLICIT_NULL_INIT
/* nothing now */
#endif
- js_ctx->recursion_limit = DUK_JSON_DEC_RECURSION_LIMIT;
+ js_ctx->recursion_limit = DUK_USE_JSON_DEC_RECLIMIT;
DUK_ASSERT(js_ctx->recursion_depth == 0);
/* Flag handling currently assumes that flags are consistent. This is OK
@@ -33089,7 +34167,7 @@ void duk_bi_json_stringify_helper(duk_context *ctx,
* slow path has a much larger recursion limit which we'll use if
* necessary.
*/
- DUK_ASSERT(DUK_JSON_ENC_RECURSION_LIMIT >= DUK_JSON_ENC_LOOPARRAY);
+ DUK_ASSERT(DUK_USE_JSON_ENC_RECLIMIT >= DUK_JSON_ENC_LOOPARRAY);
js_ctx->recursion_limit = DUK_JSON_ENC_LOOPARRAY;
DUK_ASSERT(js_ctx->recursion_depth == 0);
@@ -33156,7 +34234,7 @@ void duk_bi_json_stringify_helper(duk_context *ctx,
/* [ ... buf loop (proplist) (gap) holder "" ] */
- js_ctx->recursion_limit = DUK_JSON_ENC_RECURSION_LIMIT;
+ js_ctx->recursion_limit = DUK_USE_JSON_ENC_RECLIMIT;
DUK_ASSERT(js_ctx->recursion_depth == 0);
undef = duk__enc_value1(js_ctx, idx_holder); /* [ ... holder key ] -> [ ... holder key val ] */
@@ -34681,7 +35759,7 @@ DUK_INTERNAL duk_ret_t duk_bi_object_prototype_to_locale_string(duk_context *ctx
return DUK_RET_TYPE_ERROR;
}
duk_dup(ctx, 0); /* -> [ O toString O ] */
- duk_call_method(ctx, 0); /* XXX: call method tailcall? */
+ duk_call_method(ctx, 0); /* XXX: call method tail call? */
return 1;
}
@@ -36440,7 +37518,6 @@ DUK_INTERNAL duk_ret_t duk_bi_thread_constructor(duk_context *ctx) {
DUK_INTERNAL duk_ret_t duk_bi_thread_resume(duk_context *ctx) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_hthread *thr_resume;
- duk_tval tv_tmp;
duk_tval *tv;
duk_hobject *func;
duk_hobject *caller_func;
@@ -36555,17 +37632,11 @@ DUK_INTERNAL duk_ret_t duk_bi_thread_resume(duk_context *ctx) {
/* lj value2: thread */
DUK_ASSERT(thr->valstack_bottom < thr->valstack_top);
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value2);
- DUK_TVAL_SET_TVAL(&thr->heap->lj.value2, &thr->valstack_bottom[0]);
- DUK_TVAL_INCREF(thr, &thr->heap->lj.value2);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value2, &thr->valstack_bottom[0]); /* side effects */
/* lj value1: value */
DUK_ASSERT(thr->valstack_bottom + 1 < thr->valstack_top);
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1);
- DUK_TVAL_SET_TVAL(&thr->heap->lj.value1, &thr->valstack_bottom[1]);
- DUK_TVAL_INCREF(thr, &thr->heap->lj.value1);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, &thr->valstack_bottom[1]); /* side effects */
thr->heap->lj.iserror = is_error;
@@ -36599,7 +37670,6 @@ DUK_INTERNAL duk_ret_t duk_bi_thread_resume(duk_context *ctx) {
DUK_INTERNAL duk_ret_t duk_bi_thread_yield(duk_context *ctx) {
duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval tv_tmp;
duk_hobject *caller_func;
duk_small_int_t is_error;
@@ -36682,10 +37752,7 @@ DUK_INTERNAL duk_ret_t duk_bi_thread_yield(duk_context *ctx) {
/* lj value1: value */
DUK_ASSERT(thr->valstack_bottom < thr->valstack_top);
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1);
- DUK_TVAL_SET_TVAL(&thr->heap->lj.value1, &thr->valstack_bottom[0]);
- DUK_TVAL_INCREF(thr, &thr->heap->lj.value1);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, &thr->valstack_bottom[0]); /* side effects */
thr->heap->lj.iserror = is_error;
@@ -37422,7 +38489,7 @@ DUK_LOCAL void duk__print_hobject(duk__dprint_state *st, duk_hobject *h) {
/* leave out trailing 'unused' elements */
while (a_limit > 0) {
tv = DUK_HOBJECT_A_GET_VALUE_PTR(NULL, h, a_limit - 1);
- if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) {
+ if (!DUK_TVAL_IS_UNUSED(tv)) {
break;
}
a_limit--;
@@ -37661,10 +38728,17 @@ DUK_LOCAL void duk__print_hbuffer(duk__dprint_state *st, duk_hbuffer *h) {
}
if (DUK_HBUFFER_HAS_DYNAMIC(h)) {
- duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h;
- duk_fb_sprintf(fb, "buffer:dynamic:%p:%ld",
- (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(NULL, g),
- (long) DUK_HBUFFER_DYNAMIC_GET_SIZE(g));
+ if (DUK_HBUFFER_HAS_EXTERNAL(h)) {
+ duk_hbuffer_external *g = (duk_hbuffer_external *) h;
+ duk_fb_sprintf(fb, "buffer:external:%p:%ld",
+ (void *) DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(NULL, g),
+ (long) DUK_HBUFFER_EXTERNAL_GET_SIZE(g));
+ } else {
+ duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h;
+ duk_fb_sprintf(fb, "buffer:dynamic:%p:%ld",
+ (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(NULL, g),
+ (long) DUK_HBUFFER_DYNAMIC_GET_SIZE(g));
+ }
} else {
duk_fb_sprintf(fb, "buffer:fixed:%ld", (long) DUK_HBUFFER_GET_SIZE(h));
}
@@ -37744,11 +38818,11 @@ DUK_LOCAL void duk__print_tval(duk__dprint_state *st, duk_tval *tv) {
}
switch (DUK_TVAL_GET_TAG(tv)) {
case DUK_TAG_UNDEFINED: {
- if (DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) {
- duk_fb_put_cstring(fb, "unused");
- } else {
- duk_fb_put_cstring(fb, "undefined");
- }
+ duk_fb_put_cstring(fb, "undefined");
+ break;
+ }
+ case DUK_TAG_UNUSED: {
+ duk_fb_put_cstring(fb, "unused");
break;
}
case DUK_TAG_NULL: {
@@ -37791,6 +38865,7 @@ DUK_LOCAL void duk__print_tval(duk__dprint_state *st, duk_tval *tv) {
#endif
default: {
/* IEEE double is approximately 16 decimal digits; print a couple extra */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
duk_fb_sprintf(fb, "%.18g", (double) DUK_TVAL_GET_NUMBER(tv));
break;
@@ -38113,6 +39188,7 @@ DUK_INTERNAL void duk_debug_do_detach(duk_heap *heap) {
heap->dbg_processing = 0;
heap->dbg_paused = 0;
heap->dbg_state_dirty = 0;
+ heap->dbg_force_restart = 0;
heap->dbg_step_type = 0;
heap->dbg_step_thread = NULL;
heap->dbg_step_csindex = 0;
@@ -38467,9 +39543,6 @@ DUK_INTERNAL void duk_debug_read_tval(duk_hthread *thr) {
len = duk__debug_read_uint16_raw(thr);
duk__debug_read_hbuffer_raw(thr, len);
break;
- case 0x15:
- duk_push_unused(ctx);
- break;
case 0x16:
duk_push_undefined(ctx);
break;
@@ -38508,6 +39581,7 @@ DUK_INTERNAL void duk_debug_read_tval(duk_hthread *thr) {
duk_push_heapptr(thr, (void *) h);
break;
}
+ case 0x15: /* unused: not accepted in inbound messages */
default:
goto fail;
}
@@ -38682,6 +39756,11 @@ DUK_INTERNAL void duk_debug_write_hstring(duk_hthread *thr, duk_hstring *h) {
(h != NULL ? (duk_size_t) DUK_HSTRING_GET_BYTELEN(h) : 0));
}
+DUK_LOCAL void duk__debug_write_hstring_safe_top(duk_hthread *thr) {
+ duk_context *ctx = (duk_context *) thr;
+ duk_debug_write_hstring(thr, duk_safe_to_hstring(ctx, -1));
+}
+
DUK_INTERNAL void duk_debug_write_buffer(duk_hthread *thr, const char *data, duk_size_t length) {
duk_debug_write_strbuf(thr, data, length, 0x13);
}
@@ -38752,8 +39831,10 @@ DUK_INTERNAL void duk_debug_write_tval(duk_hthread *thr, duk_tval *tv) {
switch (DUK_TVAL_GET_TAG(tv)) {
case DUK_TAG_UNDEFINED:
- duk_debug_write_byte(thr,
- DUK_TVAL_IS_UNDEFINED_UNUSED(tv) ? 0x15 : 0x16);
+ duk_debug_write_byte(thr, 0x16);
+ break;
+ case DUK_TAG_UNUSED:
+ duk_debug_write_byte(thr, 0x15);
break;
case DUK_TAG_NULL:
duk_debug_write_byte(thr, 0x17);
@@ -38789,6 +39870,7 @@ DUK_INTERNAL void duk_debug_write_tval(duk_hthread *thr, duk_tval *tv) {
#endif
default:
/* Numbers are normalized to big (network) endian. */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
du.d = DUK_TVAL_GET_NUMBER(tv);
DUK_DBLUNION_DOUBLE_HTON(&du);
@@ -38861,22 +39943,24 @@ DUK_INTERNAL duk_uint_fast32_t duk_debug_curr_line(duk_hthread *thr) {
duk_uint_fast32_t line;
duk_uint_fast32_t pc;
- if (thr->callstack_top == 0) {
+ act = duk_hthread_get_current_activation(thr); /* may be NULL */
+ if (act == NULL) {
return 0;
}
- act = thr->callstack + thr->callstack_top - 1;
- /* act->pc indicates the next instruction about to be executed. This
- * is usually correct, but for the 'debugger' statement it will be the
- * instruction after that.
+ /* We're conceptually between two opcodes; act->pc indicates the next
+ * instruction to be executed. This is usually the correct pc/line to
+ * indicate in Status. (For the 'debugger' statement this now reports
+ * the pc/line after the debugger statement because the debugger opcode
+ * has already been executed.)
*/
- pc = (duk_uint_fast32_t) act->pc;
+ pc = duk_hthread_get_act_curr_pc(thr, act);
/* XXX: this should be optimized to be a raw query and avoid valstack
* operations if possible.
*/
- duk_push_hobject(ctx, act->func);
+ duk_push_tval(ctx, &act->tv_func);
line = duk_hobject_pc2line_query(ctx, -1, pc);
duk_pop(ctx);
return line;
@@ -38897,20 +39981,62 @@ DUK_INTERNAL void duk_debug_send_status(duk_hthread *thr) {
duk_debug_write_int(thr, 0);
} else {
act = thr->callstack + thr->callstack_top - 1;
- duk_push_hobject(ctx, act->func);
+ duk_push_tval(ctx, &act->tv_func);
duk_get_prop_string(ctx, -1, "fileName");
- duk_safe_to_string(ctx, -1);
- duk_debug_write_hstring(thr, duk_require_hstring(ctx, -1));
+ duk__debug_write_hstring_safe_top(thr);
duk_get_prop_string(ctx, -2, "name");
- duk_safe_to_string(ctx, -1);
- duk_debug_write_hstring(thr, duk_require_hstring(ctx, -1));
+ duk__debug_write_hstring_safe_top(thr);
duk_pop_3(ctx);
+ /* Report next pc/line to be executed. */
duk_debug_write_uint(thr, (duk_uint32_t) duk_debug_curr_line(thr));
- duk_debug_write_uint(thr, (duk_uint32_t) act->pc);
+ duk_debug_write_uint(thr, (duk_uint32_t) duk_hthread_get_act_curr_pc(thr, act));
+ }
+
+ duk_debug_write_eom(thr);
+}
+
+#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY)
+DUK_INTERNAL void duk_debug_send_throw(duk_hthread *thr, duk_bool_t fatal) {
+ /*
+ * NFY <int: 5> <int: fatal> <str: msg> <str: filename> <int: linenumber> EOM
+ */
+
+ duk_context *ctx = (duk_context *) thr;
+ duk_activation *act;
+ duk_uint32_t pc;
+
+ DUK_ASSERT(thr->valstack_top > thr->valstack); /* At least: ... [err] */
+
+ duk_debug_write_notify(thr, DUK_DBG_CMD_THROW);
+ duk_debug_write_int(thr, fatal);
+
+ /* Report thrown value to client coerced to string */
+ duk_dup(ctx, -1);
+ duk__debug_write_hstring_safe_top(thr);
+ duk_pop(ctx);
+
+ if (duk_is_error(ctx, -1)) {
+ /* Error instance, use augmented error data directly */
+ duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME);
+ duk__debug_write_hstring_safe_top(thr);
+ duk_get_prop_stridx(ctx, -2, DUK_STRIDX_LINE_NUMBER);
+ duk_debug_write_uint(thr, duk_get_uint(ctx, -1));
+ } else {
+ /* For anything other than an Error instance, we calculate the error
+ * location directly from the current activation.
+ */
+ act = thr->callstack + thr->callstack_top - 1;
+ duk_push_tval(ctx, &act->tv_func);
+ duk_get_prop_string(ctx, -1, "fileName");
+ duk__debug_write_hstring_safe_top(thr);
+ pc = duk_hthread_get_act_prev_pc(thr, act);
+ duk_debug_write_uint(thr, (duk_uint32_t) duk_hobject_pc2line_query(ctx, -2, pc));
}
+ duk_pop_2(ctx); /* shared pop */
duk_debug_write_eom(thr);
}
+#endif /* DUK_USE_DEBUGGER_THROW_NOTIFY */
/*
* Debug message processing
@@ -39004,7 +40130,7 @@ DUK_LOCAL void duk__debug_skip_to_eom(duk_hthread *thr) {
DUK_LOCAL void duk__debug_handle_basic_info(duk_hthread *thr, duk_heap *heap) {
DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command version"));
+ DUK_D(DUK_DPRINT("debug command Version"));
duk_debug_write_reply(thr);
duk_debug_write_int(thr, DUK_VERSION);
@@ -39024,7 +40150,7 @@ DUK_LOCAL void duk__debug_handle_basic_info(duk_hthread *thr, duk_heap *heap) {
DUK_LOCAL void duk__debug_handle_trigger_status(duk_hthread *thr, duk_heap *heap) {
DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command triggerstatus"));
+ DUK_D(DUK_DPRINT("debug command TriggerStatus"));
duk_debug_write_reply(thr);
duk_debug_write_eom(thr);
@@ -39032,7 +40158,7 @@ DUK_LOCAL void duk__debug_handle_trigger_status(duk_hthread *thr, duk_heap *heap
}
DUK_LOCAL void duk__debug_handle_pause(duk_hthread *thr, duk_heap *heap) {
- DUK_D(DUK_DPRINT("debug command pause"));
+ DUK_D(DUK_DPRINT("debug command Pause"));
DUK_HEAP_SET_PAUSED(heap);
duk_debug_write_reply(thr);
@@ -39040,7 +40166,7 @@ DUK_LOCAL void duk__debug_handle_pause(duk_hthread *thr, duk_heap *heap) {
}
DUK_LOCAL void duk__debug_handle_resume(duk_hthread *thr, duk_heap *heap) {
- DUK_D(DUK_DPRINT("debug command resume"));
+ DUK_D(DUK_DPRINT("debug command Resume"));
DUK_HEAP_CLEAR_PAUSED(heap);
duk_debug_write_reply(thr);
@@ -39060,7 +40186,7 @@ DUK_LOCAL void duk__debug_handle_step(duk_hthread *thr, duk_heap *heap, duk_int3
step_type = DUK_STEP_TYPE_OUT;
}
- DUK_D(DUK_DPRINT("debug command stepinto/stepover/stepout: %d", (int) cmd));
+ DUK_D(DUK_DPRINT("debug command StepInto/StepOver/StepOut: %d", (int) cmd));
line = duk_debug_curr_line(thr);
if (line > 0) {
heap->dbg_paused = 0;
@@ -39079,7 +40205,7 @@ DUK_LOCAL void duk__debug_handle_step(duk_hthread *thr, duk_heap *heap, duk_int3
DUK_LOCAL void duk__debug_handle_list_break(duk_hthread *thr, duk_heap *heap) {
duk_small_int_t i;
- DUK_D(DUK_DPRINT("debug command listbreak"));
+ DUK_D(DUK_DPRINT("debug command ListBreak"));
duk_debug_write_reply(thr);
for (i = 0; i < (duk_small_int_t) heap->dbg_breakpoint_count; i++) {
duk_debug_write_hstring(thr, heap->dbg_breakpoints[i].filename);
@@ -39098,7 +40224,7 @@ DUK_LOCAL void duk__debug_handle_add_break(duk_hthread *thr, duk_heap *heap) {
filename = duk_debug_read_hstring(thr);
linenumber = (duk_uint32_t) duk_debug_read_int(thr);
- DUK_D(DUK_DPRINT("debug command addbreak: %!O:%ld", (duk_hobject *) filename, (long) linenumber));
+ DUK_D(DUK_DPRINT("debug command AddBreak: %!O:%ld", (duk_hobject *) filename, (long) linenumber));
idx = duk_debug_add_breakpoint(thr, filename, linenumber);
if (idx >= 0) {
duk_debug_write_reply(thr);
@@ -39115,7 +40241,7 @@ DUK_LOCAL void duk__debug_handle_del_break(duk_hthread *thr, duk_heap *heap) {
DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command delbreak"));
+ DUK_D(DUK_DPRINT("debug command DelBreak"));
idx = (duk_small_uint_t) duk_debug_read_int(thr);
if (duk_debug_remove_breakpoint(thr, idx)) {
duk_debug_write_reply(thr);
@@ -39131,7 +40257,7 @@ DUK_LOCAL void duk__debug_handle_get_var(duk_hthread *thr, duk_heap *heap) {
duk_bool_t rc;
DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command getvar"));
+ DUK_D(DUK_DPRINT("debug command GetVar"));
str = duk_debug_read_hstring(thr); /* push to stack */
DUK_ASSERT(str != NULL);
@@ -39153,7 +40279,8 @@ DUK_LOCAL void duk__debug_handle_get_var(duk_hthread *thr, duk_heap *heap) {
duk_debug_write_reply(thr);
if (rc) {
duk_debug_write_int(thr, 1);
- duk_debug_write_tval(thr, duk_require_tval(ctx, -2));
+ DUK_ASSERT(duk_get_tval(ctx, -2) != NULL);
+ duk_debug_write_tval(thr, duk_get_tval(ctx, -2));
duk_pop_2(ctx);
} else {
duk_debug_write_int(thr, 0);
@@ -39169,12 +40296,13 @@ DUK_LOCAL void duk__debug_handle_put_var(duk_hthread *thr, duk_heap *heap) {
duk_tval *tv;
DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command putvar"));
+ DUK_D(DUK_DPRINT("debug command PutVar"));
str = duk_debug_read_hstring(thr); /* push to stack */
DUK_ASSERT(str != NULL);
duk_debug_read_tval(thr); /* push to stack */
- tv = duk_require_tval(ctx, -1);
+ tv = duk_get_tval(ctx, -1);
+ DUK_ASSERT(tv != NULL);
if (thr->callstack_top > 0) {
duk_js_putvar_activation(thr,
@@ -39198,6 +40326,7 @@ DUK_LOCAL void duk__debug_handle_get_call_stack(duk_hthread *thr, duk_heap *heap
duk_context *ctx = (duk_context *) thr;
duk_hthread *curr_thr = thr;
duk_activation *curr_act;
+ duk_uint_fast32_t pc;
duk_uint_fast32_t line;
duk_size_t i;
@@ -39210,19 +40339,31 @@ DUK_LOCAL void duk__debug_handle_get_call_stack(duk_hthread *thr, duk_heap *heap
i--;
curr_act = curr_thr->callstack + i;
- /* XXX: optimize to use direct reads,
- * i.e. avoid value stack operations.
+ /* PC/line semantics here are:
+ * - For callstack top we're conceptually between two
+ * opcodes and current PC indicates next line to
+ * execute, so report that (matches Status).
+ * - For other activations we're conceptually still
+ * executing the instruction at PC-1, so report that
+ * (matches error stacktrace behavior).
+ * - See: https://github.com/svaarala/duktape/issues/281
+ */
+
+ /* XXX: optimize to use direct reads, i.e. avoid
+ * value stack operations.
*/
duk_push_tval(ctx, &curr_act->tv_func);
duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME);
- duk_safe_to_string(ctx, -1);
- duk_debug_write_hstring(thr, duk_get_hstring(ctx, -1));
+ duk__debug_write_hstring_safe_top(thr);
duk_get_prop_stridx(ctx, -2, DUK_STRIDX_NAME);
- duk_safe_to_string(ctx, -1);
- duk_debug_write_hstring(thr, duk_get_hstring(ctx, -1));
- line = duk_hobject_pc2line_query(ctx, -3, curr_act->pc);
+ duk__debug_write_hstring_safe_top(thr);
+ pc = duk_hthread_get_act_curr_pc(thr, curr_act);
+ if (i != curr_thr->callstack_top - 1 && pc > 0) {
+ pc--;
+ }
+ line = duk_hobject_pc2line_query(ctx, -3, pc);
duk_debug_write_uint(thr, (duk_uint32_t) line);
- duk_debug_write_uint(thr, (duk_uint32_t) curr_act->pc);
+ duk_debug_write_uint(thr, (duk_uint32_t) pc);
duk_pop_3(ctx);
}
curr_thr = curr_thr->resumer;
@@ -39285,7 +40426,7 @@ DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) {
DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command eval"));
+ DUK_D(DUK_DPRINT("debug command Eval"));
/* The eval code must be executed within the current (topmost)
* activation. For now, use global object eval() function, with
@@ -39309,7 +40450,7 @@ DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) {
act = thr->callstack + thr->callstack_top - 1;
fun = DUK_ACT_GET_FUNC(act);
- if (fun && DUK_HOBJECT_IS_COMPILEDFUNCTION(fun)) {
+ if (fun != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION(fun)) {
/* Direct eval requires that there's a current
* activation and it is an Ecmascript function.
* When Eval is executed from e.g. cooperate API
@@ -39337,7 +40478,8 @@ DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) {
duk_debug_write_reply(thr);
duk_debug_write_int(thr, (duk_int32_t) eval_err);
- duk_debug_write_tval(thr, duk_require_tval(ctx, -1));
+ DUK_ASSERT(duk_get_tval(ctx, -1) != NULL);
+ duk_debug_write_tval(thr, duk_get_tval(ctx, -1));
duk_debug_write_eom(thr);
duk_pop(ctx);
@@ -39346,7 +40488,7 @@ DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) {
DUK_LOCAL void duk__debug_handle_detach(duk_hthread *thr, duk_heap *heap) {
DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command detach"));
+ DUK_D(DUK_DPRINT("debug command Detach"));
duk_debug_write_reply(thr);
duk_debug_write_eom(thr);
@@ -39507,7 +40649,7 @@ DUK_LOCAL void duk__debug_dump_strtab_probe(duk_hthread *thr, duk_heap *heap) {
#endif /* DUK_USE_STRTAB_PROBE */
DUK_LOCAL void duk__debug_handle_dump_heap(duk_hthread *thr, duk_heap *heap) {
- DUK_D(DUK_DPRINT("debug command dumpheap"));
+ DUK_D(DUK_DPRINT("debug command DumpHeap"));
duk_debug_write_reply(thr);
duk__debug_dump_heap_allocated(thr, heap);
@@ -39530,7 +40672,7 @@ DUK_LOCAL void duk__debug_handle_get_bytecode(duk_hthread *thr, duk_heap *heap)
DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command getbytecode"));
+ DUK_D(DUK_DPRINT("debug command GetBytecode"));
duk_debug_write_reply(thr);
if (thr->callstack_top == 0) {
@@ -39544,9 +40686,9 @@ DUK_LOCAL void duk__debug_handle_get_bytecode(duk_hthread *thr, duk_heap *heap)
}
DUK_ASSERT(fun == NULL || DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) fun));
- if (fun) {
+ if (fun != NULL) {
n = DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(heap, fun);
- duk_debug_write_int(thr, (int) n);
+ duk_debug_write_int(thr, (duk_int32_t) n);
tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(heap, fun);
for (i = 0; i < n; i++) {
duk_debug_write_tval(thr, tv);
@@ -39554,7 +40696,7 @@ DUK_LOCAL void duk__debug_handle_get_bytecode(duk_hthread *thr, duk_heap *heap)
}
n = DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(heap, fun);
- duk_debug_write_int(thr, (int) n);
+ duk_debug_write_int(thr, (duk_int32_t) n);
fn = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(heap, fun);
for (i = 0; i < n; i++) {
duk_debug_write_hobject(thr, *fn);
@@ -39689,6 +40831,75 @@ DUK_LOCAL void duk__debug_process_message(duk_hthread *thr) {
return;
}
+/* Halt execution and enter a debugger message loop until execution is resumed
+ * by the client. PC for the current activation may be temporarily decremented
+ * so that the "current" instruction will be shown by the client. This helper
+ * is callable from anywhere, also outside bytecode executor.
+ */
+
+DUK_INTERNAL void duk_debug_halt_execution(duk_hthread *thr, duk_bool_t use_prev_pc) {
+ duk_activation *act;
+ duk_hcompiledfunction *fun;
+ duk_instr_t *old_pc = NULL;
+
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(thr->heap != NULL);
+ DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap));
+ DUK_ASSERT(thr->heap->dbg_processing == 0);
+
+ DUK_HEAP_SET_PAUSED(thr->heap);
+
+ act = duk_hthread_get_current_activation(thr);
+
+ /* NOTE: act may be NULL if an error is thrown outside of any activation,
+ * which may happen in the case of, e.g. syntax errors.
+ */
+
+ /* Decrement PC if that was requested, this requires a PC sync. */
+ if (act != NULL) {
+ duk_hthread_sync_currpc(thr);
+ old_pc = act->curr_pc;
+ fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
+
+ /* Short circuit if is safe: if act->curr_pc != NULL, 'fun' is
+ * guaranteed to be a non-NULL Ecmascript function.
+ */
+ DUK_ASSERT(act->curr_pc == NULL ||
+ (fun != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) fun)));
+ if (use_prev_pc &&
+ act->curr_pc != NULL &&
+ act->curr_pc > DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, fun)) {
+ act->curr_pc--;
+ }
+ }
+
+ /* Process debug messages until we are no longer paused. */
+
+ /* NOTE: This is a bit fragile. It's important to ensure that neither
+ * duk_debug_send_status() or duk_debug_process_messages() throws an
+ * error or act->curr_pc will never be reset.
+ */
+
+ thr->heap->dbg_processing = 1;
+ duk_debug_send_status(thr);
+ while (thr->heap->dbg_paused) {
+ DUK_ASSERT(thr->heap->dbg_processing);
+ duk_debug_process_messages(thr, 0 /*no_block*/);
+ }
+ thr->heap->dbg_processing = 0;
+
+ /* XXX: Decrementing and restoring act->curr_pc works now, but if the
+ * debugger message loop gains the ability to adjust the current PC
+ * (e.g. a forced jump) restoring the PC here will break. Another
+ * approach would be to use a state flag for the "decrement 1 from
+ * topmost activation's PC" and take it into account whenever dealing
+ * with PC values.
+ */
+ if (act != NULL) {
+ act->curr_pc = old_pc; /* restore PC */
+ }
+}
+
DUK_INTERNAL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t no_block) {
duk_context *ctx = (duk_context *) thr;
#if defined(DUK_USE_ASSERTIONS)
@@ -39698,6 +40909,8 @@ DUK_INTERNAL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t
DUK_ASSERT(thr != NULL);
DUK_UNREF(ctx);
+ DUK_ASSERT(thr->heap != NULL);
+ DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap));
#if defined(DUK_USE_ASSERTIONS)
entry_top = duk_get_top(ctx);
#endif
@@ -39795,6 +41008,7 @@ DUK_INTERNAL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_
DUK_ASSERT(thr != NULL);
heap = thr->heap;
DUK_ASSERT(heap != NULL);
+ DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap));
DUK_ASSERT_DISABLE(breakpoint_index >= 0); /* unsigned */
if (breakpoint_index >= heap->dbg_breakpoint_count) {
@@ -39816,6 +41030,7 @@ DUK_INTERNAL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_
heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL;
DUK_HSTRING_DECREF(thr, h); /* side effects */
+ DUK_UNREF(h); /* w/o refcounting */
/* Breakpoint entries above the used area are left as garbage. */
@@ -39880,7 +41095,7 @@ DUK_INTERNAL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_
* The user error handler is stored in 'Duktape.errCreate' or
* 'Duktape.errThrow' depending on whether we're augmenting the error at
* creation or throw time. There are several alternatives to this approach,
- * see doc/error-objects.txt for discussion.
+ * see doc/error-objects.rst for discussion.
*
* Note: since further longjmp()s may occur while calling the error handler
* (for many reasons, e.g. a labeled 'break' inside the handler), the
@@ -40006,7 +41221,7 @@ DUK_LOCAL void duk__add_traceback(duk_hthread *thr, duk_hthread *thr_callstack,
* and cheap to create. It may change arbitrarily from version to version.
* It should be decoded/accessed through version specific accessors only.
*
- * See doc/error-objects.txt.
+ * See doc/error-objects.rst.
*/
DUK_DDD(DUK_DDDPRINT("adding traceback to object: %!T",
@@ -40093,10 +41308,7 @@ DUK_LOCAL void duk__add_traceback(duk_hthread *thr, duk_hthread *thr_callstack,
* PC points to next instruction, find offending PC. Note that
* PC == 0 for native code.
*/
- pc = thr_callstack->callstack[i].pc;
- if (pc > 0) {
- pc--;
- }
+ pc = duk_hthread_get_act_prev_pc(thr_callstack, thr_callstack->callstack + i);
DUK_ASSERT_DISABLE(pc >= 0); /* unsigned */
DUK_ASSERT((duk_double_t) pc < DUK_DOUBLE_2TO32); /* assume PC is at most 32 bits and non-negative */
d = ((duk_double_t) thr_callstack->callstack[i].flags) * DUK_DOUBLE_2TO32 + (duk_double_t) pc;
@@ -40178,10 +41390,7 @@ DUK_LOCAL void duk__err_augment_builtin_throw(duk_hthread *thr, duk_hthread *thr
/* PC points to next instruction, find offending PC. Note that
* PC == 0 for native code.
*/
- pc = act->pc;
- if (pc > 0) {
- pc--;
- }
+ pc = duk_hthread_get_act_prev_pc(thr, act);
DUK_ASSERT_DISABLE(pc >= 0); /* unsigned */
DUK_ASSERT((duk_double_t) pc < DUK_DOUBLE_2TO32); /* assume PC is at most 32 bits and non-negative */
act = NULL; /* invalidated by pushes, so get out of the way */
@@ -40339,6 +41548,37 @@ DUK_INTERNAL void duk_err_longjmp(duk_hthread *thr) {
/* include removed: duk_internal.h */
/*
+ * Helper to walk the thread chain and see if there is an active error
+ * catcher. Protected calls or finally blocks aren't considered catching.
+ */
+
+#if defined(DUK_USE_DEBUGGER_SUPPORT)
+DUK_LOCAL duk_bool_t duk__have_active_catcher(duk_hthread *thr) {
+ /*
+ * XXX: As noted above, a protected API call won't be counted as a
+ * catcher. This is usually convenient, e.g. in the case of a top-
+ * level duk_pcall(), but may not always be desirable. Perhaps add an
+ * argument to treat them as catchers?
+ */
+
+ duk_size_t i;
+
+ DUK_ASSERT(thr != NULL);
+
+ while (thr != NULL) {
+ for (i = 0; i < thr->catchstack_top; i++) {
+ duk_catcher *cat = thr->catchstack + i;
+ if (DUK_CAT_HAS_CATCH_ENABLED(cat)) {
+ return 1; /* all we need to know */
+ }
+ }
+ thr = thr->resumer;
+ }
+ return 0;
+}
+#endif /* DUK_USE_DEBUGGER_SUPPORT */
+
+/*
* Get prototype object for an integer error code.
*/
@@ -40374,15 +41614,61 @@ DUK_INTERNAL duk_hobject *duk_error_prototype_from_code(duk_hthread *thr, duk_er
*/
DUK_INTERNAL void duk_err_setup_heap_ljstate(duk_hthread *thr, duk_small_int_t lj_type) {
- duk_tval tv_tmp;
+#if defined(DUK_USE_DEBUGGER_SUPPORT)
+ /* If something is thrown with the debugger attached and nobody will
+ * catch it, execution is paused before the longjmp, turning over
+ * control to the debug client. This allows local state to be examined
+ * before the stack is unwound. Errors are not intercepted when debug
+ * message loop is active (e.g. for Eval).
+ */
+
+ /* XXX: Allow customizing the pause and notify behavior at runtime
+ * using debugger runtime flags. For now the behavior is fixed using
+ * config options.
+ */
+#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY) || defined(DUK_USE_DEBUGGER_PAUSE_UNCAUGHT)
+ if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap) &&
+ !thr->heap->dbg_processing &&
+ lj_type == DUK_LJ_TYPE_THROW) {
+ duk_context *ctx = (duk_context *) thr;
+ duk_bool_t fatal;
+ duk_hobject *h_obj;
+
+ /* Don't intercept a DoubleError, we may have caused the initial double
+ * fault and attempting to intercept it will cause us to be called
+ * recursively and exhaust the C stack.
+ */
+ h_obj = duk_get_hobject(ctx, -1);
+ if (h_obj == thr->builtins[DUK_BIDX_DOUBLE_ERROR]) {
+ DUK_D(DUK_DPRINT("built-in DoubleError instance thrown, not intercepting"));
+ goto skip_throw_intercept;
+ }
+
+ DUK_D(DUK_DPRINT("throw with debugger attached, report to client"));
+
+ fatal = !duk__have_active_catcher(thr);
+
+#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY)
+ /* Report it to the debug client */
+ duk_debug_send_throw(thr, fatal);
+#endif
+
+#if defined(DUK_USE_DEBUGGER_PAUSE_UNCAUGHT)
+ if (fatal) {
+ DUK_D(DUK_DPRINT("throw will be fatal, halt before longjmp"));
+ duk_debug_halt_execution(thr, 1 /*use_prev_pc*/);
+ }
+#endif
+ }
+
+ skip_throw_intercept:
+#endif /* DUK_USE_DEBUGGER_THROW_NOTIFY || DUK_USE_DEBUGGER_PAUSE_UNCAUGHT */
+#endif /* DUK_USE_DEBUGGER_SUPPORT */
thr->heap->lj.type = lj_type;
DUK_ASSERT(thr->valstack_top > thr->valstack);
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1);
- DUK_TVAL_SET_TVAL(&thr->heap->lj.value1, thr->valstack_top - 1);
- DUK_TVAL_INCREF(thr, &thr->heap->lj.value1);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, thr->valstack_top - 1); /* side effects */
duk_pop((duk_context *) thr);
}
@@ -40430,6 +41716,23 @@ DUK_INTERNAL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code)
thr->heap->handling_error = 1;
+ if (!double_error) {
+ /* Allow headroom for calls during error handling (see GH-191).
+ * We allow space for 10 additional recursions, with one extra
+ * for, e.g. a print() call at the deepest level.
+ */
+ DUK_ASSERT(thr->callstack_max == DUK_CALLSTACK_DEFAULT_MAX);
+ thr->callstack_max = DUK_CALLSTACK_DEFAULT_MAX + DUK_CALLSTACK_GROW_STEP + 11;
+ }
+
+ DUK_ASSERT(thr->callstack_max == DUK_CALLSTACK_DEFAULT_MAX + DUK_CALLSTACK_GROW_STEP + 11); /* just making sure */
+
+ /* Sync so that augmentation sees up-to-date activations, NULL
+ * thr->ptr_curr_pc so that it's not used if side effects occur
+ * in augmentation or longjmp handling.
+ */
+ duk_hthread_sync_and_null_currpc(thr);
+
/*
* Create and push an error object onto the top of stack.
* If a "double error" occurs, use a fixed error instance
@@ -40490,10 +41793,11 @@ DUK_INTERNAL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code)
* Finally, longjmp
*/
- thr->heap->handling_error = 0;
-
duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_THROW);
+ thr->callstack_max = DUK_CALLSTACK_DEFAULT_MAX; /* reset callstack limit */
+ thr->heap->handling_error = 0;
+
DUK_DDD(DUK_DDDPRINT("THROW ERROR (INTERNAL): %!iT, %!iT (after throw augment)",
(duk_tval *) &thr->heap->lj.value1, (duk_tval *) &thr->heap->lj.value2));
@@ -40557,10 +41861,18 @@ DUK_INTERNAL void duk_error_throw_from_negative_rc(duk_hthread *thr, duk_ret_t r
/* include removed: duk_internal.h */
-DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags) {
+/* Allocate a new duk_hbuffer of a certain type and return a pointer to it
+ * (NULL on error). Write buffer data pointer to 'out_bufdata' (only if
+ * allocation successful).
+ */
+DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags, void **out_bufdata) {
duk_hbuffer *res = NULL;
+ duk_size_t header_size;
duk_size_t alloc_size;
+ DUK_ASSERT(heap != NULL);
+ DUK_ASSERT(out_bufdata != NULL);
+
DUK_DDD(DUK_DDDPRINT("allocate hbuffer"));
/* Size sanity check. Should not be necessary because caller is
@@ -40570,12 +41882,17 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk
*/
if (size > DUK_HBUFFER_MAX_BYTELEN) {
DUK_D(DUK_DPRINT("hbuffer alloc failed: size too large: %ld", (long) size));
- return NULL;
+ return NULL; /* no need to write 'out_bufdata' */
}
- if (flags & DUK_BUF_FLAG_DYNAMIC) {
+ if (flags & DUK_BUF_FLAG_EXTERNAL) {
+ header_size = sizeof(duk_hbuffer_external);
+ alloc_size = sizeof(duk_hbuffer_external);
+ } if (flags & DUK_BUF_FLAG_DYNAMIC) {
+ header_size = sizeof(duk_hbuffer_dynamic);
alloc_size = sizeof(duk_hbuffer_dynamic);
} else {
+ header_size = sizeof(duk_hbuffer_fixed);
alloc_size = sizeof(duk_hbuffer_fixed) + size;
DUK_ASSERT(alloc_size >= sizeof(duk_hbuffer_fixed)); /* no wrapping */
}
@@ -40588,20 +41905,30 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk
/* zero everything unless requested not to do so */
#if defined(DUK_USE_ZERO_BUFFER_DATA)
DUK_MEMZERO((void *) res,
- (flags & DUK_BUF_FLAG_NOZERO) ?
- ((flags & DUK_BUF_FLAG_DYNAMIC) ?
- sizeof(duk_hbuffer_dynamic) :
- sizeof(duk_hbuffer_fixed)) :
- alloc_size);
+ (flags & DUK_BUF_FLAG_NOZERO) ? header_size : alloc_size);
#else
- DUK_MEMZERO((void *) res,
- (flags & DUK_BUF_FLAG_DYNAMIC) ? sizeof(duk_hbuffer_dynamic) : sizeof(duk_hbuffer_fixed));
+ DUK_MEMZERO((void *) res, header_size);
#endif
- if (flags & DUK_BUF_FLAG_DYNAMIC) {
+ if (flags & DUK_BUF_FLAG_EXTERNAL) {
+ duk_hbuffer_external *h;
+ h = (duk_hbuffer_external *) res;
+ DUK_UNREF(h);
+ *out_bufdata = NULL;
+#if defined(DUK_USE_EXPLICIT_NULL_INIT)
+#if defined(DUK_USE_HEAPPTR16)
+/* the compressed pointer is zeroed which maps to NULL, so nothing to do. */
+#else
+ DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap, h, NULL);
+#endif
+#endif
+ DUK_ASSERT(DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap, h) == NULL);
+ } else if (flags & DUK_BUF_FLAG_DYNAMIC) {
duk_hbuffer_dynamic *h = (duk_hbuffer_dynamic *) res;
void *ptr;
+
if (size > 0) {
+ DUK_ASSERT(!(flags & DUK_BUF_FLAG_EXTERNAL)); /* alloc external with size zero */
DUK_DDD(DUK_DDDPRINT("dynamic buffer with nonzero size, alloc actual buffer"));
#ifdef DUK_USE_ZERO_BUFFER_DATA
ptr = DUK_ALLOC_ZEROED(heap, size);
@@ -40612,9 +41939,11 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk
/* Because size > 0, NULL check is correct */
goto error;
}
+ *out_bufdata = ptr;
DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap, h, ptr);
} else {
+ *out_bufdata = NULL;
#if defined(DUK_USE_EXPLICIT_NULL_INIT)
#if defined(DUK_USE_HEAPPTR16)
/* the compressed pointer is zeroed which maps to NULL, so nothing to do. */
@@ -40624,6 +41953,8 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk
#endif
DUK_ASSERT(DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, h) == NULL);
}
+ } else {
+ *out_bufdata = (void *) ((duk_hbuffer_fixed *) res + 1);
}
DUK_HBUFFER_SET_SIZE(res, size);
@@ -40631,6 +41962,11 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk
DUK_HEAPHDR_SET_TYPE(&res->hdr, DUK_HTYPE_BUFFER);
if (flags & DUK_BUF_FLAG_DYNAMIC) {
DUK_HBUFFER_SET_DYNAMIC(res);
+ if (flags & DUK_BUF_FLAG_EXTERNAL) {
+ DUK_HBUFFER_SET_EXTERNAL(res);
+ }
+ } else {
+ DUK_ASSERT(!(flags & DUK_BUF_FLAG_EXTERNAL));
}
DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, &res->hdr);
@@ -40641,7 +41977,7 @@ DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk
DUK_DD(DUK_DDPRINT("hbuffer allocation failed"));
DUK_FREE(heap, res);
- return NULL;
+ return NULL; /* no need to write 'out_bufdata' */
}
/* For indirect allocs. */
@@ -40676,6 +42012,7 @@ DUK_INTERNAL void duk_hbuffer_resize(duk_hthread *thr, duk_hbuffer_dynamic *buf,
DUK_ASSERT(thr != NULL);
DUK_ASSERT(buf != NULL);
DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(buf));
+ DUK_ASSERT(!DUK_HBUFFER_HAS_EXTERNAL(buf));
/*
* Maximum size check
@@ -40731,12 +42068,14 @@ DUK_INTERNAL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic *buf)
DUK_ASSERT(thr != NULL);
DUK_ASSERT(buf != NULL);
DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(buf));
+ DUK_ASSERT(!DUK_HBUFFER_HAS_EXTERNAL(buf));
duk_hbuffer_resize(thr, buf, 0);
}
/* include removed: duk_internal.h */
#line 2 "duk_hbufferobject_misc.c"
+#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
DUK_INTERNAL duk_uint_t duk_hbufferobject_clamp_bytelength(duk_hbufferobject *h_bufobj, duk_uint_t len) {
duk_uint_t buf_size;
duk_uint_t buf_avail;
@@ -40753,6 +42092,7 @@ DUK_INTERNAL duk_uint_t duk_hbufferobject_clamp_bytelength(duk_hbufferobject *h_
return buf_avail >= len ? len : buf_avail;
}
+#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
#line 1 "duk_heap_alloc.c"
/*
* duk_heap allocation and freeing.
@@ -40812,7 +42152,7 @@ DUK_INTERNAL void duk_free_hbuffer_inner(duk_heap *heap, duk_hbuffer *h) {
DUK_ASSERT(heap != NULL);
DUK_ASSERT(h != NULL);
- if (DUK_HBUFFER_HAS_DYNAMIC(h)) {
+ if (DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h)) {
duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h;
DUK_DDD(DUK_DDDPRINT("free dynamic buffer %p", (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, g)));
DUK_FREE(heap, DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, g));
@@ -41273,6 +42613,7 @@ DUK_LOCAL void duk__dump_type_sizes(void) {
DUK__DUMPSZ(duk_hbuffer);
DUK__DUMPSZ(duk_hbuffer_fixed);
DUK__DUMPSZ(duk_hbuffer_dynamic);
+ DUK__DUMPSZ(duk_hbuffer_external);
DUK__DUMPSZ(duk_propaccessor);
DUK__DUMPSZ(duk_propvalue);
DUK__DUMPSZ(duk_propdesc);
@@ -41409,6 +42750,10 @@ duk_heap *duk_heap_alloc(duk_alloc_function alloc_func,
DUK_D(DUK_DPRINT("self tests passed"));
#endif
+ /*
+ * Computed values (e.g. INFINITY)
+ */
+
#ifdef DUK_USE_COMPUTED_NAN
do {
/* Workaround for some exotic platforms where NAN is missing
@@ -41425,10 +42770,6 @@ duk_heap *duk_heap_alloc(duk_alloc_function alloc_func,
} while (0);
#endif
- /*
- * Computed values (e.g. INFINITY)
- */
-
#ifdef DUK_USE_COMPUTED_INFINITY
do {
/* Similar workaround for INFINITY. */
@@ -41514,7 +42855,7 @@ duk_heap *duk_heap_alloc(duk_alloc_function alloc_func,
/* res->mark_and_sweep_trigger_counter == 0 -> now causes immediate GC; which is OK */
res->call_recursion_depth = 0;
- res->call_recursion_limit = DUK_HEAP_DEFAULT_CALL_RECURSION_LIMIT;
+ res->call_recursion_limit = DUK_USE_NATIVE_CALL_RECLIMIT;
/* XXX: use the pointer as a seed for now: mix in time at least */
@@ -41532,8 +42873,8 @@ duk_heap *duk_heap_alloc(duk_alloc_function alloc_func,
#endif
DUK_ASSERT(res->lj.type == DUK_LJ_TYPE_UNKNOWN); /* zero */
- DUK_TVAL_SET_UNDEFINED_UNUSED(&res->lj.value1);
- DUK_TVAL_SET_UNDEFINED_UNUSED(&res->lj.value2);
+ DUK_TVAL_SET_UNDEFINED(&res->lj.value1);
+ DUK_TVAL_SET_UNDEFINED(&res->lj.value2);
#if (DUK_STRTAB_INITIAL_SIZE < DUK_UTIL_MIN_HASH_PRIME)
#error initial heap stringtable size is defined incorrectly
@@ -41847,7 +43188,7 @@ DUK_LOCAL void duk__mark_hobject(duk_heap *heap, duk_hobject *h) {
duk_tval *tv;
tv = t->valstack;
- while (tv < t->valstack_end) {
+ while (tv < t->valstack_top) {
duk__mark_tval(heap, tv);
tv++;
}
@@ -41892,7 +43233,7 @@ DUK_LOCAL void duk__mark_heaphdr(duk_heap *heap, duk_heaphdr *h) {
}
DUK_HEAPHDR_SET_REACHABLE(h);
- if (heap->mark_and_sweep_recursion_depth >= DUK_HEAP_MARK_AND_SWEEP_RECURSION_LIMIT) {
+ if (heap->mark_and_sweep_recursion_depth >= DUK_USE_MARK_AND_SWEEP_RECLIMIT) {
/* log this with a normal debug level because this should be relatively rare */
DUK_D(DUK_DPRINT("mark-and-sweep recursion limit reached, marking as temproot: %p", (void *) h));
DUK_HEAP_SET_MARKANDSWEEP_RECLIMIT_REACHED(heap);
@@ -42809,6 +44150,52 @@ DUK_LOCAL void duk__assert_valid_refcounts(duk_heap *heap) {
#endif /* DUK_USE_ASSERTIONS */
/*
+ * Finalizer torture. Do one fake finalizer call which causes side effects
+ * similar to one or more finalizers on actual objects.
+ */
+
+#if defined(DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE)
+DUK_LOCAL duk_ret_t duk__markandsweep_fake_finalizer(duk_context *ctx) {
+ DUK_D(DUK_DPRINT("fake mark-and-sweep torture finalizer executed"));
+
+ /* Require a lot of stack to force a value stack grow/shrink.
+ * Recursive mark-and-sweep is prevented by allocation macros
+ * so this won't trigger another mark-and-sweep.
+ */
+ duk_require_stack(ctx, 100000);
+
+ /* XXX: do something to force a callstack grow/shrink, perhaps
+ * just a manual forced resize or a forced relocating realloc?
+ */
+
+ return 0;
+}
+
+DUK_LOCAL void duk__markandsweep_torture_finalizer(duk_hthread *thr) {
+ duk_context *ctx;
+ duk_int_t rc;
+
+ DUK_ASSERT(thr != NULL);
+ ctx = (duk_context *) thr;
+
+ /* Avoid fake finalization when callstack limit has been reached.
+ * Otherwise a callstack limit error will be created, then refzero'ed.
+ */
+ if (thr->heap->call_recursion_depth >= thr->heap->call_recursion_limit ||
+ thr->callstack_size + 2 * DUK_CALLSTACK_GROW_STEP >= thr->callstack_max /*approximate*/) {
+ DUK_D(DUK_DPRINT("call recursion depth reached, avoid fake mark-and-sweep torture finalizer"));
+ return;
+ }
+
+ /* Run fake finalizer. Avoid creating unnecessary garbage. */
+ duk_push_c_function(ctx, duk__markandsweep_fake_finalizer, 0 /*nargs*/);
+ rc = duk_pcall(ctx, 0 /*nargs*/);
+ DUK_UNREF(rc); /* ignored */
+ duk_pop(ctx);
+}
+#endif /* DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE */
+
+/*
* Main mark-and-sweep function.
*
* 'flags' represents the features requested by the caller. The current
@@ -42829,6 +44216,9 @@ DUK_INTERNAL duk_bool_t duk_heap_mark_and_sweep(duk_heap *heap, duk_small_uint_t
* If we don't have a thread, the entire mark-and-sweep is now
* skipped (although we could just skip finalizations).
*/
+ /* XXX: if thr != NULL, the thr may still be in the middle of
+ * initialization; improve the thread viability test.
+ */
thr = duk__get_temp_hthread(heap);
if (thr == NULL) {
DUK_D(DUK_DPRINT("temporary hack: gc skipped because we don't have a temp thread"));
@@ -42995,10 +44385,26 @@ DUK_INTERNAL duk_bool_t duk_heap_mark_and_sweep(duk_heap *heap, duk_small_uint_t
* already happened, this is probably good enough for now.
*/
- if (!(flags & DUK_MS_FLAG_NO_FINALIZERS)) {
- duk__run_object_finalizers(heap);
+#if defined(DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE)
+ /* Cannot simulate individual finalizers because finalize_list only
+ * contains objects with actual finalizers. But simulate side effects
+ * from finalization by doing a bogus function call and resizing the
+ * stacks.
+ */
+ if (flags & DUK_MS_FLAG_NO_FINALIZERS) {
+ DUK_D(DUK_DPRINT("skip mark-and-sweep torture finalizer, DUK_MS_FLAG_NO_FINALIZERS is set"));
+ } else if (!(thr->valstack != NULL && thr->callstack != NULL && thr->catchstack != NULL)) {
+ DUK_D(DUK_DPRINT("skip mark-and-sweep torture finalizer, thread not yet viable"));
} else {
+ DUK_D(DUK_DPRINT("run mark-and-sweep torture finalizer"));
+ duk__markandsweep_torture_finalizer(thr);
+ }
+#endif /* DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE */
+
+ if (flags & DUK_MS_FLAG_NO_FINALIZERS) {
DUK_D(DUK_DPRINT("finalizer run skipped because DUK_MS_FLAG_NO_FINALIZERS is set"));
+ } else {
+ duk__run_object_finalizers(heap);
}
/*
@@ -43628,7 +45034,7 @@ DUK_LOCAL void duk__refcount_finalize_hobject(duk_hthread *thr, duk_hobject *h)
duk_tval *tv;
tv = t->valstack;
- while (tv < t->valstack_end) {
+ while (tv < t->valstack_top) {
duk_tval_decref(thr, tv);
tv++;
}
@@ -43674,6 +45080,60 @@ DUK_INTERNAL void duk_heaphdr_refcount_finalize(duk_hthread *thr, duk_heaphdr *h
}
}
+#if defined(DUK_USE_REFZERO_FINALIZER_TORTURE)
+DUK_LOCAL duk_ret_t duk__refcount_fake_finalizer(duk_context *ctx) {
+ DUK_UNREF(ctx);
+ DUK_D(DUK_DPRINT("fake refcount torture finalizer executed"));
+#if 0
+ DUK_DD(DUK_DDPRINT("fake torture finalizer for: %!T", duk_get_tval(ctx, 0)));
+#endif
+ /* Require a lot of stack to force a value stack grow/shrink. */
+ duk_require_stack(ctx, 100000);
+
+ /* XXX: do something to force a callstack grow/shrink, perhaps
+ * just a manual forced resize?
+ */
+ return 0;
+}
+
+DUK_LOCAL void duk__refcount_run_torture_finalizer(duk_hthread *thr, duk_hobject *obj) {
+ duk_context *ctx;
+ duk_int_t rc;
+
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(obj != NULL);
+ ctx = (duk_context *) thr;
+
+ /* Avoid fake finalization for the duk__refcount_fake_finalizer function
+ * itself, otherwise we're in infinite recursion.
+ */
+ if (DUK_HOBJECT_HAS_NATIVEFUNCTION(obj)) {
+ if (((duk_hnativefunction *) obj)->func == duk__refcount_fake_finalizer) {
+ DUK_DD(DUK_DDPRINT("avoid fake torture finalizer for duk__refcount_fake_finalizer itself"));
+ return;
+ }
+ }
+ /* Avoid fake finalization when callstack limit has been reached.
+ * Otherwise a callstack limit error will be created, then refzero'ed,
+ * and we're in an infinite loop.
+ */
+ if (thr->heap->call_recursion_depth >= thr->heap->call_recursion_limit ||
+ thr->callstack_size + 2 * DUK_CALLSTACK_GROW_STEP >= thr->callstack_max /*approximate*/) {
+ DUK_D(DUK_DPRINT("call recursion depth reached, avoid fake torture finalizer"));
+ return;
+ }
+
+ /* Run fake finalizer. Avoid creating new refzero queue entries
+ * so that we are not forced into a forever loop.
+ */
+ duk_push_c_function(ctx, duk__refcount_fake_finalizer, 1 /*nargs*/);
+ duk_push_hobject(ctx, obj);
+ rc = duk_pcall(ctx, 1);
+ DUK_UNREF(rc); /* ignored */
+ duk_pop(ctx);
+}
+#endif /* DUK_USE_REFZERO_FINALIZER_TORTURE */
+
/*
* Refcount memory freeing loop.
*
@@ -43723,6 +45183,20 @@ DUK_LOCAL void duk__refzero_free_pending(duk_hthread *thr) {
DUK_ASSERT(DUK_HEAPHDR_GET_PREV(heap, h1) == NULL);
DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(h1) == DUK_HTYPE_OBJECT); /* currently, always the case */
+#if defined(DUK_USE_REFZERO_FINALIZER_TORTURE)
+ /* Torture option to shake out finalizer side effect issues:
+ * make a bogus function call for every finalizable object,
+ * essentially simulating the case where everything has a
+ * finalizer.
+ */
+ DUK_DD(DUK_DDPRINT("refzero torture enabled, fake finalizer"));
+ DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(h1) == 0);
+ DUK_HEAPHDR_PREINC_REFCOUNT(h1); /* bump refcount to prevent refzero during finalizer processing */
+ duk__refcount_run_torture_finalizer(thr, obj); /* must never longjmp */
+ DUK_HEAPHDR_PREDEC_REFCOUNT(h1); /* remove artificial bump */
+ DUK_ASSERT_DISABLE(h1->h_refcount >= 0); /* refcount is unsigned, so always true */
+#endif
+
/*
* Finalizer check.
*
@@ -45288,6 +46762,7 @@ DUK_INTERNAL duk_hstring *duk_heap_string_intern_u32_checked(duk_hthread *thr, d
}
/* find and remove string from stringtable; caller must free the string itself */
+#if defined(DUK_USE_REFERENCE_COUNTING)
DUK_INTERNAL void duk_heap_string_remove(duk_heap *heap, duk_hstring *h) {
DUK_DDD(DUK_DDDPRINT("remove string from stringtable: %!O", (duk_heaphdr *) h));
@@ -45306,6 +46781,7 @@ DUK_INTERNAL void duk_heap_string_remove(duk_heap *heap, duk_hstring *h) {
#error internal error, invalid strtab options
#endif
}
+#endif
#if defined(DUK_USE_MARK_AND_SWEEP) && defined(DUK_USE_MS_STRINGTABLE_RESIZE)
DUK_INTERNAL void duk_heap_force_strtab_resize(duk_heap *heap) {
@@ -45579,6 +47055,7 @@ DUK_INTERNAL duk_hthread *duk_hthread_alloc(duk_heap *heap, duk_uint_t hobject_f
duk__init_object_parts(heap, &res->obj, hobject_flags);
#ifdef DUK_USE_EXPLICIT_NULL_INIT
+ res->ptr_curr_pc = NULL;
res->heap = NULL;
res->valstack = NULL;
res->valstack_end = NULL;
@@ -46002,7 +47479,7 @@ DUK_INTERNAL void duk_hobject_enumerator_create(duk_context *ctx, duk_small_uint
duk_tval *tv;
tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, curr, i);
- if (DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) {
+ if (DUK_TVAL_IS_UNUSED(tv)) {
continue;
}
k = duk_heap_string_intern_u32_checked(thr, i);
@@ -46042,7 +47519,7 @@ DUK_INTERNAL void duk_hobject_enumerator_create(duk_context *ctx, duk_small_uint
}
DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, curr, i) ||
- !DUK_TVAL_IS_UNDEFINED_UNUSED(&DUK_HOBJECT_E_GET_VALUE_PTR(thr->heap, curr, i)->v));
+ !DUK_TVAL_IS_UNUSED(&DUK_HOBJECT_E_GET_VALUE_PTR(thr->heap, curr, i)->v));
duk_push_hstring(ctx, k);
duk_push_true(ctx);
@@ -46159,7 +47636,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_enumerator_next(duk_context *ctx, duk_bool_t
k = DUK_HOBJECT_E_GET_KEY(thr->heap, e, idx);
DUK_ASSERT(k != NULL);
DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, e, idx));
- DUK_ASSERT(!DUK_TVAL_IS_UNDEFINED_UNUSED(&DUK_HOBJECT_E_GET_VALUE(thr->heap, e, idx).v));
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(&DUK_HOBJECT_E_GET_VALUE(thr->heap, e, idx).v));
idx++;
@@ -46372,7 +47849,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_prototype_chain_contains(duk_hthread *thr, d
return 0;
}
-DUK_INTERNAL void duk_hobject_set_prototype(duk_hthread *thr, duk_hobject *h, duk_hobject *p) {
+DUK_INTERNAL void duk_hobject_set_prototype_updref(duk_hthread *thr, duk_hobject *h, duk_hobject *p) {
#ifdef DUK_USE_REFERENCE_COUNTING
duk_hobject *tmp;
@@ -46394,7 +47871,7 @@ DUK_INTERNAL void duk_hobject_set_prototype(duk_hthread *thr, duk_hobject *h, du
*
* The run-time pc2line data is bit-packed, and documented in:
*
- * doc/function-objects.txt
+ * doc/function-objects.rst
*/
/* include removed: duk_internal.h */
@@ -46427,7 +47904,7 @@ DUK_INTERNAL void duk_hobject_pc2line_pack(duk_hthread *thr, duk_compiler_instr
duk_push_dynamic_buffer(ctx, (duk_size_t) curr_offset);
h_buf = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, -1);
DUK_ASSERT(h_buf != NULL);
- DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h_buf));
+ DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h_buf) && !DUK_HBUFFER_HAS_EXTERNAL(h_buf));
hdr = (duk_uint32_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h_buf);
DUK_ASSERT(hdr != NULL);
@@ -46528,7 +48005,7 @@ DUK_LOCAL duk_uint_fast32_t duk__hobject_pc2line_query_raw(duk_hthread *thr, duk
duk_uint_fast32_t curr_line;
DUK_ASSERT(buf != NULL);
- DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) buf));
+ DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) buf) && !DUK_HBUFFER_HAS_EXTERNAL((duk_hbuffer *) buf));
DUK_UNREF(thr);
/*
@@ -46627,7 +48104,7 @@ DUK_INTERNAL duk_uint_fast32_t duk_hobject_pc2line_query(duk_context *ctx, duk_i
duk_get_prop_stridx(ctx, idx_func, DUK_STRIDX_INT_PC2LINE);
pc2line = (duk_hbuffer_fixed *) duk_get_hbuffer(ctx, -1);
if (pc2line != NULL) {
- DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) pc2line));
+ DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) pc2line) && !DUK_HBUFFER_HAS_EXTERNAL((duk_hbuffer *) pc2line));
line = duk__hobject_pc2line_query_raw((duk_hthread *) ctx, pc2line, (duk_uint_fast32_t) pc);
} else {
line = 0;
@@ -46643,8 +48120,8 @@ DUK_INTERNAL duk_uint_fast32_t duk_hobject_pc2line_query(duk_context *ctx, duk_i
* Hobject property set/get functionality.
*
* This is very central functionality for size, performance, and compliance.
- * It is also rather intricate; see hobject-algorithms.txt for discussion on
- * the algorithms and memory-management.txt for discussion on refcounts and
+ * It is also rather intricate; see hobject-algorithms.rst for discussion on
+ * the algorithms and memory-management.rst for discussion on refcounts and
* side effect issues.
*
* Notes:
@@ -46889,7 +48366,7 @@ DUK_LOCAL void duk__compute_a_stats(duk_hthread *thr, duk_hobject *obj, duk_uint
a = DUK_HOBJECT_A_GET_BASE(thr->heap, obj);
for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) {
duk_tval *tv = a++;
- if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) {
+ if (!DUK_TVAL_IS_UNUSED(tv)) {
used++;
highest_idx = i;
}
@@ -47320,7 +48797,7 @@ void duk__realloc_props(duk_hthread *thr,
DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL);
tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i);
- if (DUK_TVAL_IS_UNDEFINED_UNUSED(tv1)) {
+ if (DUK_TVAL_IS_UNUSED(tv1)) {
continue;
}
@@ -47412,7 +48889,7 @@ void duk__realloc_props(duk_hthread *thr,
/* fill new entries with -unused- (required, gc reachable) */
for (i = DUK_HOBJECT_GET_ASIZE(obj); i < new_a_size; i++) {
duk_tval *tv = &new_a[i];
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv);
+ DUK_TVAL_SET_UNUSED(tv);
}
} else {
#ifdef DUK_USE_ASSERTIONS
@@ -47423,7 +48900,7 @@ void duk__realloc_props(duk_hthread *thr,
tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i);
/* current assertion is quite strong: decref's and set to unused */
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(tv));
+ DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv));
}
}
#endif
@@ -47566,7 +49043,7 @@ void duk__realloc_props(duk_hthread *thr,
i--;
DUK_ASSERT(new_e_k != NULL);
DUK_ASSERT(new_e_k[i] != NULL);
- DUK_HSTRING_DECREF(thr, new_e_k[i]);
+ DUK_HSTRING_DECREF(thr, new_e_k[i]); /* side effects */
}
#ifdef DUK_USE_MARK_AND_SWEEP
@@ -47973,8 +49450,6 @@ DUK_INTERNAL duk_bool_t duk_hobject_get_internal_value(duk_heap *heap, duk_hobje
DUK_ASSERT(obj != NULL);
DUK_ASSERT(tv_out != NULL);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv_out);
-
/* always in entry part, no need to look up parents etc */
duk_hobject_find_existing_entry(heap, obj, DUK_HEAP_STRING_INT_VALUE(heap), &e_idx, &h_idx);
if (e_idx >= 0) {
@@ -47982,6 +49457,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_get_internal_value(duk_heap *heap, duk_hobje
DUK_TVAL_SET_TVAL(tv_out, DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, obj, e_idx));
return 1;
}
+ DUK_TVAL_SET_UNDEFINED(tv_out);
return 0;
}
@@ -48251,7 +49727,7 @@ DUK_LOCAL duk_bool_t duk__get_own_property_desc_raw(duk_hthread *thr, duk_hobjec
if (DUK_HOBJECT_HAS_ARRAY_PART(obj) && arr_idx != DUK__NO_ARRAY_INDEX) {
if (arr_idx < DUK_HOBJECT_GET_ASIZE(obj)) {
tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx);
- if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) {
+ if (!DUK_TVAL_IS_UNUSED(tv)) {
DUK_DDD(DUK_DDDPRINT("-> found in array part"));
if (flags & DUK__DESC_FLAG_PUSH_VALUE) {
duk_push_tval(ctx, tv);
@@ -48653,7 +50129,7 @@ DUK_LOCAL duk_tval *duk__getprop_shallow_fastpath_array_tval(duk_hthread *thr, d
DUK_DDD(DUK_DDDPRINT("key is a valid array index and inside array part"));
tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, idx);
- if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) {
+ if (!DUK_TVAL_IS_UNUSED(tv)) {
DUK_DDD(DUK_DDDPRINT("-> fast path successful"));
return tv;
}
@@ -48665,7 +50141,6 @@ DUK_LOCAL duk_tval *duk__getprop_shallow_fastpath_array_tval(duk_hthread *thr, d
DUK_LOCAL duk_bool_t duk__putprop_shallow_fastpath_array_tval(duk_hthread *thr, duk_hobject *obj, duk_tval *tv_key, duk_tval *tv_val, duk_propdesc *temp_desc) {
duk_tval *tv;
duk_uint32_t idx;
- duk_tval tv_tmp;
duk_uint32_t old_len, new_len;
if (!(DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj) &&
@@ -48722,10 +50197,7 @@ DUK_LOCAL duk_bool_t duk__putprop_shallow_fastpath_array_tval(duk_hthread *thr,
}
tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, idx);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_TVAL(tv, tv_val);
- DUK_TVAL_INCREF(thr, tv);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* note: may trigger gc and props compaction, must be last */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */
DUK_DDD(DUK_DDDPRINT("array fast path success for index %ld", (long) idx));
return 1;
@@ -49185,6 +50657,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_getprop(duk_hthread *thr, duk_tval *tv_obj,
default: {
/* number */
DUK_DDD(DUK_DDDPRINT("base object is a number, start lookup from number prototype"));
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_obj));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_obj));
curr = thr->builtins[DUK_BIDX_NUMBER_PROTOTYPE];
break;
@@ -49580,7 +51053,6 @@ duk_bool_t duk__handle_put_array_length_smaller(duk_hthread *thr,
duk_uint32_t arr_idx;
duk_hstring *key;
duk_tval *tv;
- duk_tval tv_tmp;
duk_bool_t rc;
DUK_DDD(DUK_DDDPRINT("new array length smaller than old (%ld -> %ld), "
@@ -49628,9 +51100,7 @@ duk_bool_t duk__handle_put_array_length_smaller(duk_hthread *thr,
while (i > new_len) {
i--;
tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_UNUSED_UPDREF(thr, tv); /* side effects */
}
*out_result_len = new_len;
@@ -49976,10 +51446,10 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj,
* the fast path will incorrectly ignore them.
*
* This fast path could be made compliant by falling through
- * to the slow path if the previous value was UNDEFINED_UNUSED.
- * This would also remove the need to check for extensibility.
- * Right now a non-extensible array is slower than an extensible
- * one as far as writes are concerned.
+ * to the slow path if the previous value was UNUSED. This would
+ * also remove the need to check for extensibility. Right now a
+ * non-extensible array is slower than an extensible one as far
+ * as writes are concerned.
*
* The fast path behavior is documented in more detail here:
* tests/ecmascript/test-misc-array-fast-write.js
@@ -50387,14 +51857,9 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj,
}
if (desc.e_idx >= 0) {
- duk_tval tv_tmp;
-
tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, orig, desc.e_idx);
DUK_DDD(DUK_DDDPRINT("previous entry value: %!iT", (duk_tval *) tv));
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_TVAL(tv, tv_val);
- DUK_TVAL_INCREF(thr, tv);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* note: may trigger gc and props compaction, must be last */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */
/* don't touch property attributes or hash part */
DUK_DD(DUK_DDPRINT("put to an existing entry at index %ld -> new value %!iT",
(long) desc.e_idx, (duk_tval *) tv));
@@ -50403,15 +51868,11 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj,
* above is pointless for them. The check could be avoided with some
* refactoring but is probably not worth it.
*/
- duk_tval tv_tmp;
DUK_ASSERT(desc.a_idx >= 0);
tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, orig, desc.a_idx);
DUK_DDD(DUK_DDDPRINT("previous array value: %!iT", (duk_tval *) tv));
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_TVAL(tv, tv_val);
- DUK_TVAL_INCREF(thr, tv);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* note: may trigger gc and props compaction, must be last */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */
DUK_DD(DUK_DDPRINT("put to an existing array entry at index %ld -> new value %!iT",
(long) desc.a_idx, (duk_tval *) tv));
}
@@ -50568,7 +52029,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj,
tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, orig, arr_idx);
/* prev value must be unused, no decref */
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(tv));
+ DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv));
DUK_TVAL_SET_TVAL(tv, tv_val);
DUK_TVAL_INCREF(thr, tv);
DUK_DD(DUK_DDPRINT("put to new array entry: %ld -> %!T",
@@ -50749,7 +52210,6 @@ DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj,
DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags) {
duk_propdesc desc;
duk_tval *tv;
- duk_tval tv_tmp;
duk_uint32_t arr_idx;
duk_bool_t throw_flag;
duk_bool_t force_flag;
@@ -50790,9 +52250,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *o
DUK_ASSERT(desc.e_idx < 0);
tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, desc.a_idx);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_UNUSED_UPDREF(thr, tv); /* side effects */
goto success;
} else {
DUK_ASSERT(desc.a_idx < 0);
@@ -50823,21 +52281,20 @@ DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *o
tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, desc.e_idx);
DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, desc.e_idx, NULL);
DUK_UNREF(tmp);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
+ DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, desc.e_idx);
DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, desc.e_idx, NULL);
DUK_UNREF(tmp);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
+ DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
} else {
tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
}
- /* this is not strictly necessary because if key == NULL, value MUST be ignored */
+#if 0
+ /* Not strictly necessary because if key == NULL, flag MUST be ignored. */
DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, desc.e_idx, 0);
- DUK_TVAL_SET_UNDEFINED_UNUSED(DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx));
+#endif
/* remove key */
DUK_DDD(DUK_DDDPRINT("before removing key, e_idx %ld, key %p, key at slot %p",
@@ -50845,7 +52302,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *o
DUK_DDD(DUK_DDDPRINT("removing key at e_idx %ld", (long) desc.e_idx));
DUK_ASSERT(key == DUK_HOBJECT_E_GET_KEY(thr->heap, obj, desc.e_idx));
DUK_HOBJECT_E_SET_KEY(thr->heap, obj, desc.e_idx, NULL);
- DUK_HSTRING_DECREF(thr, key);
+ DUK_HSTRING_DECREF(thr, key); /* side effects */
goto success;
}
@@ -51104,7 +52561,6 @@ DUK_INTERNAL void duk_hobject_define_property_internal(duk_hthread *thr, duk_hob
duk_propdesc desc;
duk_uint32_t arr_idx;
duk_int_t e_idx;
- duk_tval tv_tmp;
duk_tval *tv1 = NULL;
duk_tval *tv2 = NULL;
duk_small_uint_t propflags = flags & DUK_PROPDESC_FLAGS_MASK; /* mask out flags not actually stored */
@@ -51184,7 +52640,7 @@ DUK_INTERNAL void duk_hobject_define_property_internal(duk_hthread *thr, duk_hob
DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, e_idx, propflags);
tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, e_idx);
/* new entry: previous value is garbage; set to undefined to share write_value */
- DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1);
+ DUK_TVAL_SET_UNDEFINED(tv1);
goto write_value;
write_value:
@@ -51194,10 +52650,7 @@ DUK_INTERNAL void duk_hobject_define_property_internal(duk_hthread *thr, duk_hob
DUK_DDD(DUK_DDDPRINT("writing/updating value: %!T -> %!T",
(duk_tval *) tv1, (duk_tval *) tv2));
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, tv2);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
goto pop_exit;
pop_exit:
@@ -51223,7 +52676,6 @@ DUK_INTERNAL void duk_hobject_define_property_internal_arridx(duk_hthread *thr,
duk_context *ctx = (duk_context *) thr;
duk_hstring *key;
duk_tval *tv1, *tv2;
- duk_tval tv_tmp;
DUK_DDD(DUK_DDDPRINT("define new property (internal) arr_idx fast path: thr=%p, obj=%!O, "
"arr_idx=%ld, flags=0x%02lx, val=%!T",
@@ -51250,10 +52702,7 @@ DUK_INTERNAL void duk_hobject_define_property_internal_arridx(duk_hthread *thr,
tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx);
tv2 = duk_require_tval(ctx, -1);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, tv2);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
duk_pop(ctx); /* [ ...val ] -> [ ... ] */
return;
@@ -51834,7 +53283,7 @@ void duk_hobject_define_property_helper(duk_context *ctx,
duk_tval *tv_tmp = duk_require_tval(ctx, idx_value);
DUK_TVAL_SET_TVAL(&tv, tv_tmp);
} else {
- DUK_TVAL_SET_UNDEFINED_ACTUAL(&tv); /* default value */
+ DUK_TVAL_SET_UNDEFINED(&tv); /* default value */
}
if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_ARRAY_PART(obj)) {
@@ -52004,7 +53453,6 @@ void duk_hobject_define_property_helper(duk_context *ctx,
}
} else {
duk_bool_t rc;
- duk_tval tv_tmp;
duk_tval *tv1;
/* curr is data, desc is accessor */
@@ -52026,9 +53474,8 @@ void duk_hobject_define_property_helper(duk_context *ctx,
DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx));
tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ /* XXX: just decref */
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */
DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, NULL);
DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, NULL);
@@ -52069,13 +53516,13 @@ void duk_hobject_define_property_helper(duk_context *ctx,
tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, curr.e_idx);
DUK_UNREF(tmp);
DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, NULL);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
+ DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, curr.e_idx);
DUK_UNREF(tmp);
DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, NULL);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
+ DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
- DUK_TVAL_SET_UNDEFINED_ACTUAL(DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx));
+ DUK_TVAL_SET_UNDEFINED(DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx));
DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(thr->heap, obj, curr.e_idx);
DUK_HOBJECT_E_SLOT_CLEAR_ACCESSOR(thr->heap, obj, curr.e_idx);
@@ -52161,7 +53608,6 @@ void duk_hobject_define_property_helper(duk_context *ctx,
if (new_flags == DUK_PROPDESC_FLAGS_WEC) {
duk_tval *tv1, *tv2;
- duk_tval tv_tmp;
DUK_DDD(DUK_DDDPRINT("array index, new property attributes match array defaults, update in-place"));
@@ -52171,10 +53617,7 @@ void duk_hobject_define_property_helper(duk_context *ctx,
tv2 = duk_require_tval(ctx, idx_value);
tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, curr.a_idx);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, tv2);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
goto success_exotics;
}
@@ -52205,7 +53648,7 @@ void duk_hobject_define_property_helper(duk_context *ctx,
DUK_UNREF(tmp);
DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, set);
DUK_HOBJECT_INCREF_ALLOWNULL(thr, set);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
+ DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
}
if (has_get) {
duk_hobject *tmp;
@@ -52217,21 +53660,17 @@ void duk_hobject_define_property_helper(duk_context *ctx,
DUK_UNREF(tmp);
DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, get);
DUK_HOBJECT_INCREF_ALLOWNULL(thr, get);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
+ DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
}
if (has_value) {
duk_tval *tv1, *tv2;
- duk_tval tv_tmp;
DUK_DDD(DUK_DDDPRINT("update existing property value"));
DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx));
tv2 = duk_require_tval(ctx, idx_value);
tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, tv2);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
}
/*
@@ -52549,7 +53988,7 @@ DUK_INTERNAL duk_bool_t duk_hobject_object_is_sealed_frozen_helper(duk_hthread *
*/
for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) {
duk_tval *tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i);
- if (!DUK_TVAL_IS_UNDEFINED_UNUSED(tv)) {
+ if (!DUK_TVAL_IS_UNUSED(tv)) {
return 0;
}
}
@@ -52640,11 +54079,14 @@ DUK_INTERNAL duk_bool_t duk_hthread_init_stacks(duk_heap *heap, duk_hthread *thr
}
DUK_MEMZERO(thr->valstack, alloc_size);
thr->valstack_end = thr->valstack + DUK_VALSTACK_INITIAL_SIZE;
+#if !defined(DUK_USE_PREFER_SIZE)
+ thr->valstack_size = DUK_VALSTACK_INITIAL_SIZE;
+#endif
thr->valstack_bottom = thr->valstack;
thr->valstack_top = thr->valstack;
for (i = 0; i < DUK_VALSTACK_INITIAL_SIZE; i++) {
- DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->valstack[i]);
+ DUK_TVAL_SET_UNDEFINED(&thr->valstack[i]);
}
/* callstack */
@@ -53421,6 +54863,70 @@ DUK_INTERNAL duk_activation *duk_hthread_get_current_activation(duk_hthread *thr
return NULL;
}
}
+
+#if defined(DUK_USE_DEBUGGER_SUPPORT)
+DUK_INTERNAL duk_uint_fast32_t duk_hthread_get_act_curr_pc(duk_hthread *thr, duk_activation *act) {
+ duk_instr_t *bcode;
+
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(act != NULL);
+ DUK_UNREF(thr);
+
+ /* XXX: store 'bcode' pointer to activation for faster lookup? */
+ if (act->func && DUK_HOBJECT_IS_COMPILEDFUNCTION(act->func)) {
+ bcode = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) (act->func));
+ return (duk_uint_fast32_t) (act->curr_pc - bcode);
+ }
+ return 0;
+}
+#endif /* DUK_USE_DEBUGGER_SUPPORT */
+
+DUK_INTERNAL duk_uint_fast32_t duk_hthread_get_act_prev_pc(duk_hthread *thr, duk_activation *act) {
+ duk_instr_t *bcode;
+ duk_uint_fast32_t ret;
+
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(act != NULL);
+ DUK_UNREF(thr);
+
+ if (act->func && DUK_HOBJECT_IS_COMPILEDFUNCTION(act->func)) {
+ bcode = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) (act->func));
+ ret = (duk_uint_fast32_t) (act->curr_pc - bcode);
+ if (ret > 0) {
+ ret--;
+ }
+ return ret;
+ }
+ return 0;
+}
+
+/* Write bytecode executor's curr_pc back to topmost activation (if any). */
+DUK_INTERNAL void duk_hthread_sync_currpc(duk_hthread *thr) {
+ duk_activation *act;
+
+ DUK_ASSERT(thr != NULL);
+
+ if (thr->ptr_curr_pc != NULL) {
+ /* ptr_curr_pc != NULL only when bytecode executor is active. */
+ DUK_ASSERT(thr->callstack_top > 0);
+ act = thr->callstack + thr->callstack_top - 1;
+ act->curr_pc = *thr->ptr_curr_pc;
+ }
+}
+
+DUK_INTERNAL void duk_hthread_sync_and_null_currpc(duk_hthread *thr) {
+ duk_activation *act;
+
+ DUK_ASSERT(thr != NULL);
+
+ if (thr->ptr_curr_pc != NULL) {
+ /* ptr_curr_pc != NULL only when bytecode executor is active. */
+ DUK_ASSERT(thr->callstack_top > 0);
+ act = thr->callstack + thr->callstack_top - 1;
+ act->curr_pc = *thr->ptr_curr_pc;
+ thr->ptr_curr_pc = NULL;
+ }
+}
#line 1 "duk_hthread_stacks.c"
/*
* Manipulation of thread stacks (valstack, callstack, catchstack).
@@ -53930,7 +55436,7 @@ DUK_LOCAL void duk__interrupt_fixup(duk_hthread *thr, duk_hthread *entry_curr_th
DUK_ASSERT(thr != NULL);
DUK_ASSERT(thr->heap != NULL);
-#if 0
+#if defined(DUK_USE_INTERRUPT_DEBUG_FIXUP)
if (entry_curr_thread == NULL) {
thr->interrupt_init = thr->interrupt_init - thr->interrupt_counter;
thr->heap->inst_count_interrupt += thr->interrupt_init;
@@ -54518,44 +56024,45 @@ void duk__coerce_effective_this_binding(duk_hthread *thr,
duk_hobject *func,
duk_idx_t idx_this) {
duk_context *ctx = (duk_context *) thr;
- duk_small_int_t strict;
+ duk_tval *tv_this;
+ duk_hobject *obj_global;
- if (func) {
- strict = DUK_HOBJECT_HAS_STRICT(func);
- } else {
+ if (func == NULL || DUK_HOBJECT_HAS_STRICT(func)) {
/* Lightfuncs are always considered strict. */
- strict = 1;
+ DUK_DDD(DUK_DDDPRINT("this binding: strict -> use directly"));
+ return;
}
- if (strict) {
- DUK_DDD(DUK_DDDPRINT("this binding: strict -> use directly"));
- } else {
- duk_tval *tv_this = duk_require_tval(ctx, idx_this);
- duk_hobject *obj_global;
-
- if (DUK_TVAL_IS_OBJECT(tv_this)) {
- DUK_DDD(DUK_DDDPRINT("this binding: non-strict, object -> use directly"));
- } else if (DUK_TVAL_IS_LIGHTFUNC(tv_this)) {
- /* Lightfuncs are treated like objects and not coerced. */
- DUK_DDD(DUK_DDDPRINT("this binding: non-strict, lightfunc -> use directly"));
- } else if (DUK_TVAL_IS_UNDEFINED(tv_this) || DUK_TVAL_IS_NULL(tv_this)) {
- DUK_DDD(DUK_DDDPRINT("this binding: non-strict, undefined/null -> use global object"));
- obj_global = thr->builtins[DUK_BIDX_GLOBAL];
- if (obj_global) {
- duk_push_hobject(ctx, obj_global);
- } else {
- /*
- * This may only happen if built-ins are being "torn down".
- * This behavior is out of specification scope.
- */
- DUK_D(DUK_DPRINT("this binding: wanted to use global object, but it is NULL -> using undefined instead"));
- duk_push_undefined(ctx);
- }
- duk_replace(ctx, idx_this);
+ /* XXX: byte offset */
+ tv_this = thr->valstack_bottom + idx_this;
+ switch (DUK_TVAL_GET_TAG(tv_this)) {
+ case DUK_TAG_OBJECT:
+ case DUK_TAG_LIGHTFUNC: /* lightfuncs are treated like objects and not coerced */
+ DUK_DDD(DUK_DDDPRINT("this binding: non-strict, object -> use directly"));
+ break;
+ case DUK_TAG_UNDEFINED:
+ case DUK_TAG_NULL:
+ DUK_DDD(DUK_DDDPRINT("this binding: non-strict, undefined/null -> use global object"));
+ obj_global = thr->builtins[DUK_BIDX_GLOBAL];
+ /* XXX: avoid this check somehow */
+ if (DUK_LIKELY(obj_global != NULL)) {
+ DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_this)); /* no need to decref previous value */
+ DUK_TVAL_SET_OBJECT(tv_this, obj_global);
+ DUK_HOBJECT_INCREF(thr, obj_global);
} else {
- DUK_DDD(DUK_DDDPRINT("this binding: non-strict, not object/undefined/null -> use ToObject(value)"));
- duk_to_object(ctx, idx_this); /* may have side effects */
+ /* This may only happen if built-ins are being "torn down".
+ * This behavior is out of specification scope.
+ */
+ DUK_D(DUK_DPRINT("this binding: wanted to use global object, but it is NULL -> using undefined instead"));
+ DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_this)); /* no need to decref previous value */
+ DUK_TVAL_SET_UNDEFINED(tv_this); /* nothing to incref */
}
+ break;
+ default:
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_this));
+ DUK_DDD(DUK_DDDPRINT("this binding: non-strict, not object/undefined/null -> use ToObject(value)"));
+ duk_to_object(ctx, idx_this); /* may have side effects */
+ break;
}
}
@@ -54689,11 +56196,11 @@ void duk__adjust_valstack_and_top(duk_hthread *thr, duk_idx_t num_stack_args, du
* for errhandler calls
* DUK_CALL_FLAG_CONSTRUCTOR_CALL <--> for 'new Foo()' calls
*
- * Input stack:
+ * Input stack (thr):
*
* [ func this arg1 ... argN ]
*
- * Output stack:
+ * Output stack (thr):
*
* [ retval ] (DUK_EXEC_SUCCESS)
* [ errobj ] (DUK_EXEC_ERROR (normal error), protected call)
@@ -54705,7 +56212,7 @@ void duk__adjust_valstack_and_top(duk_hthread *thr, duk_idx_t num_stack_args, du
* indices) cause an error to propagate out of this function. If there is
* no catchpoint for this error, the fatal error handler is called.
*
- * See 'execution.txt'.
+ * See 'execution.rst'.
*
* The allowed thread states for making a call are:
* - thr matches heap->curr_thread, and thr is already RUNNING
@@ -54717,7 +56224,7 @@ void duk__adjust_valstack_and_top(duk_hthread *thr, duk_idx_t num_stack_args, du
* avoiding a dozen helpers with awkward plumbing.
*
* Note: setjmp() and local variables have a nasty interaction,
- * see execution.txt; non-volatile locals modified after setjmp()
+ * see execution.rst; non-volatile locals modified after setjmp()
* call are not guaranteed to keep their value.
*/
@@ -54733,9 +56240,10 @@ duk_int_t duk_handle_call(duk_hthread *thr,
duk_int_t entry_call_recursion_depth;
duk_hthread *entry_curr_thread;
duk_uint_fast8_t entry_thread_state;
+ duk_instr_t **entry_ptr_curr_pc;
volatile duk_bool_t need_setjmp;
duk_jmpbuf * volatile old_jmpbuf_ptr = NULL; /* ptr is volatile (not the target) */
- volatile duk_idx_t idx_func; /* valstack index of 'func' and retval (relative to entry valstack_bottom) */
+ duk_idx_t idx_func; /* valstack index of 'func' and retval (relative to entry valstack_bottom) */
duk_idx_t idx_args; /* valstack index of start of args (arg1) (relative to entry valstack_bottom) */
duk_idx_t nargs; /* # argument registers target function wants (< 0 => "as is") */
duk_idx_t nregs; /* # total registers target function wants on entry (< 0 => "as is") */
@@ -54745,7 +56253,6 @@ duk_int_t duk_handle_call(duk_hthread *thr,
duk_activation *act;
duk_hobject *env;
duk_jmpbuf our_jmpbuf;
- duk_tval tv_tmp;
duk_int_t retval = DUK_EXEC_ERROR;
duk_ret_t rc;
@@ -54768,12 +56275,19 @@ duk_int_t duk_handle_call(duk_hthread *thr,
*/
entry_valstack_bottom_index = (duk_size_t) (thr->valstack_bottom - thr->valstack);
+#if defined(DUK_USE_PREFER_SIZE)
entry_valstack_end = (duk_size_t) (thr->valstack_end - thr->valstack);
+#else
+ DUK_ASSERT((duk_size_t) (thr->valstack_end - thr->valstack) == thr->valstack_size);
+ entry_valstack_end = thr->valstack_size;
+#endif
entry_callstack_top = thr->callstack_top;
entry_catchstack_top = thr->catchstack_top;
entry_call_recursion_depth = thr->heap->call_recursion_depth;
entry_curr_thread = thr->heap->curr_thread; /* Note: may be NULL if first call */
entry_thread_state = thr->state;
+ entry_ptr_curr_pc = thr->ptr_curr_pc; /* may be NULL */
+
idx_func = duk_normalize_index(ctx, -num_stack_args - 2); /* idx_func must be valid, note: non-throwing! */
idx_args = idx_func + 2; /* idx_args is not necessarily valid if num_stack_args == 0 (idx_args then equals top) */
@@ -54806,6 +56320,12 @@ duk_int_t duk_handle_call(duk_hthread *thr,
(void *) entry_curr_thread,
(long) entry_thread_state));
+ /* If thr->ptr_curr_pc is set, sync curr_pc to act->pc. Then NULL
+ * thr->ptr_curr_pc so that it's not accidentally used with an incorrect
+ * activation when side effects occur.
+ */
+ duk_hthread_sync_and_null_currpc(thr);
+
/* XXX: Multiple tv_func lookups are now avoided by making a local
* copy of tv_func. Another approach would be to compute an offset
* for tv_func from valstack bottom and recomputing the tv_func
@@ -54867,6 +56387,11 @@ duk_int_t duk_handle_call(duk_hthread *thr,
DUK_ASSERT(thr->callstack_top >= entry_callstack_top);
DUK_ASSERT(thr->catchstack_top >= entry_catchstack_top);
+ /* We don't need to sync back thr->curr_pc here because the
+ * bytecode executor always has a setjmp catchpoint which
+ * does that before errors propagate to here.
+ */
+
/*
* Restore previous setjmp catchpoint
*/
@@ -54897,6 +56422,9 @@ duk_int_t duk_handle_call(duk_hthread *thr,
DUK_DDD(DUK_DDDPRINT("call is not protected -> clean up and rethrow"));
+ /* Restore entry thread executor curr_pc stack frame pointer. */
+ thr->ptr_curr_pc = entry_ptr_curr_pc;
+
DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */
thr->state = entry_thread_state;
DUK_ASSERT((thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread == NULL) || /* first call */
@@ -55118,7 +56646,7 @@ duk_int_t duk_handle_call(duk_hthread *thr,
#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
act->prev_caller = NULL;
#endif
- act->pc = 0;
+ act->curr_pc = NULL;
#if defined(DUK_USE_DEBUGGER_SUPPORT)
act->prev_line = 0;
#endif
@@ -55197,6 +56725,7 @@ duk_int_t duk_handle_call(duk_hthread *thr,
/* [... func this arg1 ... argN envobj] */
+ act = thr->callstack + thr->callstack_top - 1;
act->lex_env = env;
act->var_env = env;
DUK_HOBJECT_INCREF(thr, env);
@@ -55261,6 +56790,9 @@ duk_int_t duk_handle_call(duk_hthread *thr,
* other invalid
*/
+ /* For native calls must be NULL so we don't sync back */
+ DUK_ASSERT(thr->ptr_curr_pc == NULL);
+
if (func) {
rc = ((duk_hnativefunction *) func)->func((duk_context *) thr);
} else {
@@ -55347,6 +56879,10 @@ duk_int_t duk_handle_call(duk_hthread *thr,
* Shift to new valstack_bottom.
*/
+ DUK_ASSERT(func != NULL);
+ DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func));
+ act->curr_pc = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) func);
+
thr->valstack_bottom = thr->valstack_bottom + idx_args;
/* keep current valstack_top */
DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
@@ -55368,6 +56904,8 @@ duk_int_t duk_handle_call(duk_hthread *thr,
*
*/
+ /* thr->ptr_curr_pc is set by bytecode executor early on entry */
+ DUK_ASSERT(thr->ptr_curr_pc == NULL);
DUK_DDD(DUK_DDDPRINT("entering bytecode execution"));
duk_js_execute_bytecode(thr);
DUK_DDD(DUK_DDDPRINT("returned from bytecode execution"));
@@ -55456,17 +56994,15 @@ duk_int_t duk_handle_call(duk_hthread *thr,
* runs etc capture even out-of-memory errors so nothing should
* throw here.
*/
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1);
- DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value1);
- DUK_TVAL_DECREF(thr, &tv_tmp);
-
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value2);
- DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value2);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */
DUK_DDD(DUK_DDDPRINT("setjmp catchpoint torn down"));
}
+ /* Restore entry thread executor curr_pc stack frame pointer. */
+ thr->ptr_curr_pc = entry_ptr_curr_pc;
+
DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */
thr->state = (duk_uint8_t) entry_thread_state;
@@ -55476,6 +57012,24 @@ duk_int_t duk_handle_call(duk_hthread *thr,
thr->heap->call_recursion_depth = entry_call_recursion_depth;
+ /* If the debugger is active we need to force an interrupt so that
+ * debugger breakpoints are rechecked. This is important for function
+ * calls caused by side effects (e.g. when doing a DUK_OP_GETPROP), see
+ * GH-303. Only needed for success path, error path always causes a
+ * breakpoint recheck in the executor. It would be enough to set this
+ * only when returning to an Ecmascript activation, but setting the flag
+ * on every return should have no ill effect.
+ */
+#if defined(DUK_USE_DEBUGGER_SUPPORT)
+ if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
+ DUK_DD(DUK_DDPRINT("returning to ecmascript activation with debugger enabled, force interrupt"));
+ DUK_ASSERT(thr->interrupt_counter <= thr->interrupt_init);
+ thr->interrupt_init -= thr->interrupt_counter;
+ thr->interrupt_counter = 0;
+ thr->heap->dbg_force_restart = 1;
+ }
+#endif
+
#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG)
duk__interrupt_fixup(thr, entry_curr_thread);
#endif
@@ -55599,9 +57153,9 @@ duk_int_t duk_handle_safe_call(duk_hthread *thr,
duk_int_t entry_call_recursion_depth;
duk_hthread *entry_curr_thread;
duk_uint_fast8_t entry_thread_state;
+ duk_instr_t **entry_ptr_curr_pc;
duk_jmpbuf *old_jmpbuf_ptr = NULL;
duk_jmpbuf our_jmpbuf;
- duk_tval tv_tmp;
duk_idx_t idx_retbase;
duk_int_t retval;
duk_ret_t rc;
@@ -55616,6 +57170,7 @@ duk_int_t duk_handle_safe_call(duk_hthread *thr,
entry_call_recursion_depth = thr->heap->call_recursion_depth;
entry_curr_thread = thr->heap->curr_thread; /* Note: may be NULL if first call */
entry_thread_state = thr->state;
+ entry_ptr_curr_pc = thr->ptr_curr_pc; /* may be NULL */
idx_retbase = duk_get_top(ctx) - num_stack_args; /* Note: not a valid stack index if num_stack_args == 0 */
/* Note: cannot portably debug print a function pointer, hence 'func' not printed! */
@@ -55825,16 +57380,14 @@ duk_int_t duk_handle_safe_call(duk_hthread *thr,
* runs etc capture even out-of-memory errors so nothing should
* throw here.
*/
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1);
- DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value1);
- DUK_TVAL_DECREF(thr, &tv_tmp);
-
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value2);
- DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value2);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */
DUK_DDD(DUK_DDDPRINT("setjmp catchpoint torn down"));
+ /* Restore entry thread executor curr_pc stack frame pointer. */
+ thr->ptr_curr_pc = entry_ptr_curr_pc;
+
/* XXX: because we unwind stacks above, thr->heap->curr_thread is at
* risk of pointing to an already freed thread. This was indeed the
* case in test-bug-multithread-valgrind.c, until duk_handle_call()
@@ -55853,6 +57406,10 @@ duk_int_t duk_handle_safe_call(duk_hthread *thr,
/* stack discipline consistency check */
DUK_ASSERT(duk_get_top(ctx) == idx_retbase + num_stack_rets);
+ /* A debugger forced interrupt check is not needed here, as
+ * problematic safe calls are not caused by side effects.
+ */
+
#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG)
duk__interrupt_fixup(thr, entry_curr_thread);
#endif
@@ -55906,6 +57463,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
duk_activation *act;
duk_hobject *env;
duk_bool_t use_tailcall;
+ duk_instr_t **entry_ptr_curr_pc;
DUK_ASSERT(thr != NULL);
DUK_ASSERT(ctx != NULL);
@@ -55921,7 +57479,15 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
(thr->state == DUK_HTHREAD_STATE_RUNNING &&
thr->heap->curr_thread == thr));
- /* if a tailcall:
+ /* If thr->ptr_curr_pc is set, sync curr_pc to act->pc. Then NULL
+ * thr->ptr_curr_pc so that it's not accidentally used with an incorrect
+ * activation when side effects occur. If we end up not making the
+ * call we must restore the value.
+ */
+ entry_ptr_curr_pc = thr->ptr_curr_pc;
+ duk_hthread_sync_and_null_currpc(thr);
+
+ /* if a tail call:
* - an Ecmascript activation must be on top of the callstack
* - there cannot be any active catchstack entries
*/
@@ -55991,6 +57557,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
func = duk__nonbound_func_lookup(ctx, idx_func, &num_stack_args, &tv_func, call_flags);
if (func == NULL || !DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) {
DUK_DDD(DUK_DDDPRINT("final target is a lightfunc/nativefunc, cannot do ecma-to-ecma call"));
+ thr->ptr_curr_pc = entry_ptr_curr_pc;
return 0;
}
/* XXX: tv_func is not actually needed */
@@ -56012,7 +57579,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
/*
* Preliminary activation record and valstack manipulation.
* The concrete actions depend on whether the we're dealing
- * with a tailcall (reuse an existing activation), a resume,
+ * with a tail call (reuse an existing activation), a resume,
* or a normal call.
*
* The basic actions, in varying order, are:
@@ -56043,17 +57610,16 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
act = thr->callstack + thr->callstack_top - 1;
if (act->flags & DUK_ACT_FLAG_PREVENT_YIELD) {
/* See: test-bug-tailcall-preventyield-assert.c. */
- DUK_DDD(DUK_DDDPRINT("tailcall prevented by current activation having DUK_ACT_FLAG_PREVENTYIELD"));
+ DUK_DDD(DUK_DDDPRINT("tail call prevented by current activation having DUK_ACT_FLAG_PREVENTYIELD"));
use_tailcall = 0;
} else if (DUK_HOBJECT_HAS_NOTAIL(func)) {
- DUK_D(DUK_DPRINT("tailcall prevented by function having a notail flag"));
+ DUK_D(DUK_DPRINT("tail call prevented by function having a notail flag"));
use_tailcall = 0;
}
}
if (use_tailcall) {
duk_tval *tv1, *tv2;
- duk_tval tv_tmp;
duk_size_t cs_index;
duk_int_t i_stk; /* must be signed for loop structure */
duk_idx_t i_arg;
@@ -56065,10 +57631,10 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
* the current activation (or simulate an unwind). In particular, the
* current activation must be closed, otherwise something like
* test-bug-reduce-judofyr.js results. Also catchstack needs be unwound
- * because there may be non-error-catching label entries in valid tailcalls.
+ * because there may be non-error-catching label entries in valid tail calls.
*/
- DUK_DDD(DUK_DDDPRINT("is tailcall, reusing activation at callstack top, at index %ld",
+ DUK_DDD(DUK_DDDPRINT("is tail call, reusing activation at callstack top, at index %ld",
(long) (thr->callstack_top - 1)));
/* 'act' already set above */
@@ -56104,7 +57670,10 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
act->prev_caller = NULL;
#endif
- act->pc = 0; /* don't want an intermediate exposed state with invalid pc */
+ DUK_ASSERT(func != NULL);
+ DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func));
+ /* don't want an intermediate exposed state with invalid pc */
+ act->curr_pc = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) func);
#if defined(DUK_USE_DEBUGGER_SUPPORT)
act->prev_line = 0;
#endif
@@ -56116,7 +57685,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
#ifdef DUK_USE_TAILCALL
-#error incorrect options: tailcalls enabled with function caller property
+#error incorrect options: tail calls enabled with function caller property
#endif
/* XXX: this doesn't actually work properly for tail calls, so
* tail calls are disabled when DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
@@ -56133,7 +57702,6 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
DUK_ASSERT(DUK_ACT_GET_FUNC(act) == func); /* already updated */
DUK_ASSERT(act->var_env == NULL); /* already NULLed (by unwind) */
DUK_ASSERT(act->lex_env == NULL); /* already NULLed (by unwind) */
- DUK_ASSERT(act->pc == 0); /* already zeroed */
act->idx_bottom = entry_valstack_bottom_index; /* tail call -> reuse current "frame" */
DUK_ASSERT(nregs >= 0);
#if 0 /* topmost activation idx_retval is considered garbage, no need to init */
@@ -56148,7 +57716,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
* [ ... this_old | (crud) func this_new arg1 ... argN ]
* --> [ ... this_new | arg1 ... argN ]
*
- * For tailcalling to work properly, the valstack bottom must not grow
+ * For tail calling to work properly, the valstack bottom must not grow
* here; otherwise crud would accumulate on the valstack.
*/
@@ -56156,10 +57724,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
tv2 = thr->valstack_bottom + idx_func + 1;
DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); /* tv1 is -below- valstack_bottom */
DUK_ASSERT(tv2 >= thr->valstack_bottom && tv2 < thr->valstack_top);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, tv2);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
for (i_arg = 0; i_arg < idx_args; i_arg++) {
/* XXX: block removal API primitive */
@@ -56173,7 +57738,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
/* [ ... this_new | arg1 ... argN ] */
} else {
- DUK_DDD(DUK_DDDPRINT("not a tailcall, pushing a new activation to callstack, to index %ld",
+ DUK_DDD(DUK_DDDPRINT("not a tail call, pushing a new activation to callstack, to index %ld",
(long) (thr->callstack_top)));
duk_hthread_callstack_grow(thr);
@@ -56208,7 +57773,9 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
act->prev_caller = NULL;
#endif
- act->pc = 0;
+ DUK_ASSERT(func != NULL);
+ DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func));
+ act->curr_pc = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) func);
#if defined(DUK_USE_DEBUGGER_SUPPORT)
act->prev_line = 0;
#endif
@@ -56279,6 +57846,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
/* [... arg1 ... argN envobj] */
+ act = thr->callstack + thr->callstack_top - 1;
act->lex_env = env;
act->var_env = env;
DUK_HOBJECT_INCREF(thr, act->lex_env);
@@ -56336,7 +57904,7 @@ duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
* Recursion limits are in key functions to prevent arbitrary C recursion:
* function body parsing, statement parsing, and expression parsing.
*
- * See doc/compiler.txt for discussion on the design.
+ * See doc/compiler.rst for discussion on the design.
*
* A few typing notes:
*
@@ -56465,10 +58033,11 @@ duk_regconst_t duk__ivalue_toregconst_raw(duk_compiler_ctx *comp_ctx,
duk_small_uint_t flags);
DUK_LOCAL_DECL duk_reg_t duk__ivalue_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
#if 0 /* unused */
-DUK_LOCAL_DECL duk_reg_t duk__ivalue_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
+DUK_LOCAL_DECL duk_reg_t duk__ivalue_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
#endif
DUK_LOCAL_DECL void duk__ivalue_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_int_t forced_reg);
DUK_LOCAL_DECL duk_regconst_t duk__ivalue_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
+DUK_LOCAL_DECL duk_regconst_t duk__ivalue_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
/* identifier handling */
DUK_LOCAL_DECL duk_reg_t duk__lookup_active_register_binding(duk_compiler_ctx *comp_ctx);
@@ -56491,17 +58060,22 @@ DUK_LOCAL_DECL void duk__expr(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_s
DUK_LOCAL_DECL void duk__exprtop(duk_compiler_ctx *ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
/* convenience helpers */
+#if 0 /* unused */
DUK_LOCAL_DECL duk_reg_t duk__expr_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
+#endif
#if 0 /* unused */
-DUK_LOCAL_DECL duk_reg_t duk__expr_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
+DUK_LOCAL_DECL duk_reg_t duk__expr_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
#endif
DUK_LOCAL_DECL void duk__expr_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags, duk_reg_t forced_reg);
DUK_LOCAL_DECL duk_regconst_t duk__expr_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
+#if 0 /* unused */
+DUK_LOCAL_DECL duk_regconst_t duk__expr_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
+#endif
DUK_LOCAL_DECL void duk__expr_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
DUK_LOCAL_DECL void duk__expr_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
DUK_LOCAL_DECL duk_reg_t duk__exprtop_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
#if 0 /* unused */
-DUK_LOCAL_DECL duk_reg_t duk__exprtop_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
+DUK_LOCAL_DECL duk_reg_t duk__exprtop_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
#endif
DUK_LOCAL_DECL void duk__exprtop_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags, duk_reg_t forced_reg);
DUK_LOCAL_DECL duk_regconst_t duk__exprtop_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
@@ -56551,7 +58125,7 @@ DUK_LOCAL_DECL duk_int_t duk__parse_func_like_fnum(duk_compiler_ctx *comp_ctx, d
/* XXX: actually single step levels would work just fine, clean up */
-/* binding power "levels" (see doc/compiler.txt) */
+/* binding power "levels" (see doc/compiler.rst) */
#define DUK__BP_INVALID 0 /* always terminates led() */
#define DUK__BP_EOF 2
#define DUK__BP_CLOSING 4 /* token closes expression, e.g. ')', ']' */
@@ -56738,7 +58312,7 @@ DUK_LOCAL void duk__advance_helper(duk_compiler_ctx *comp_ctx, duk_small_int_t e
* We can use either 't' or 't_nores'; the latter would not
* recognize keywords. Some keywords can be followed by a
* RegExp (e.g. "return"), so using 't' is better. This is
- * not trivial, see doc/compiler.txt.
+ * not trivial, see doc/compiler.rst.
*/
regexp = 1;
@@ -56848,7 +58422,7 @@ DUK_LOCAL void duk__init_func_valstack_slots(duk_compiler_ctx *comp_ctx) {
func->labelinfos_idx = entry_top + 5;
func->h_labelinfos = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, entry_top + 5);
DUK_ASSERT(func->h_labelinfos != NULL);
- DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(func->h_labelinfos));
+ DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(func->h_labelinfos) && !DUK_HBUFFER_HAS_EXTERNAL(func->h_labelinfos));
duk_push_array(ctx);
func->argnames_idx = entry_top + 6;
@@ -56924,9 +58498,9 @@ DUK_LOCAL duk_int_t duk__cleanup_varmap(duk_compiler_ctx *comp_ctx) {
tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, h_varmap, i);
if (!DUK_TVAL_IS_NUMBER(tv)) {
DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv));
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv);
DUK_HOBJECT_E_SET_KEY(thr->heap, h_varmap, i, NULL);
DUK_HSTRING_DECREF(thr, h_key);
+ /* when key is NULL, value is garbage so no need to set */
} else {
ret++;
}
@@ -58096,11 +59670,35 @@ DUK_LOCAL void duk__peephole_optimize_bytecode(duk_compiler_ctx *comp_ctx) {
* code (it is checked as it is used).
*/
#define DUK__IVAL_FLAG_ALLOW_CONST (1 << 0) /* allow a constant to be returned */
-#define DUK__IVAL_FLAG_REQUIRE_TEMP (1 << 1) /* require a (mutable) temporary as a result */
+#define DUK__IVAL_FLAG_REQUIRE_TEMP (1 << 1) /* require a (mutable) temporary as a result (or a const if allowed) */
#define DUK__IVAL_FLAG_REQUIRE_SHORT (1 << 2) /* require a short (8-bit) reg/const which fits into bytecode B/C slot */
/* XXX: some code might benefit from DUK__SETTEMP_IFTEMP(ctx,x) */
+#if 0 /* enable manually for dumping */
+#define DUK__DUMP_ISPEC(compctx,ispec) do { duk__dump_ispec((compctx), (ispec)); } while (0)
+#define DUK__DUMP_IVALUE(compctx,ivalue) do { duk__dump_ivalue((compctx), (ivalue)); } while (0)
+
+DUK_LOCAL void duk__dump_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *x) {
+ DUK_D(DUK_DPRINT("ispec dump: t=%ld regconst=0x%08lx, valstack_idx=%ld, value=%!T",
+ (long) x->t, (unsigned long) x->regconst, (long) x->valstack_idx,
+ duk_get_tval((duk_context *) comp_ctx->thr, x->valstack_idx)));
+}
+DUK_LOCAL void duk__dump_ivalue(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
+ DUK_D(DUK_DPRINT("ivalue dump: t=%ld op=%ld "
+ "x1={t=%ld regconst=0x%08lx valstack_idx=%ld value=%!T} "
+ "x2={t=%ld regconst=0x%08lx valstack_idx=%ld value=%!T}",
+ (long) x->t, (long) x->op,
+ (long) x->x1.t, (unsigned long) x->x1.regconst, (long) x->x1.valstack_idx,
+ duk_get_tval((duk_context *) comp_ctx->thr, x->x1.valstack_idx),
+ (long) x->x2.t, (unsigned long) x->x2.regconst, (long) x->x2.valstack_idx,
+ duk_get_tval((duk_context *) comp_ctx->thr, x->x2.valstack_idx)));
+}
+#else
+#define DUK__DUMP_ISPEC(comp_ctx,x) do {} while (0)
+#define DUK__DUMP_IVALUE(comp_ctx,x) do {} while (0)
+#endif
+
DUK_LOCAL void duk__copy_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *src, duk_ispec *dst) {
duk_context *ctx = (duk_context *) comp_ctx->thr;
@@ -58336,6 +59934,7 @@ duk_regconst_t duk__ispec_toregconst_raw(duk_compiler_ctx *comp_ctx,
duk_double_t dval;
duk_int32_t ival;
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
dval = DUK_TVAL_GET_NUMBER(tv);
@@ -58367,26 +59966,34 @@ duk_regconst_t duk__ispec_toregconst_raw(duk_compiler_ctx *comp_ctx,
} /* end switch */
}
case DUK_ISPEC_REGCONST: {
- if ((x->regconst & DUK__CONST_MARKER) && !(flags & DUK__IVAL_FLAG_ALLOW_CONST)) {
- duk_reg_t dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx));
- duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, (duk_regconst_t) dest, x->regconst);
- return (duk_regconst_t) dest;
- } else {
- if (forced_reg >= 0) {
- if (x->regconst != (duk_regconst_t) forced_reg) {
- duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, forced_reg, x->regconst);
- }
- return (duk_regconst_t) forced_reg;
+ if (forced_reg >= 0) {
+ if (x->regconst & DUK__CONST_MARKER) {
+ duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, forced_reg, x->regconst);
+ } else if (x->regconst != (duk_regconst_t) forced_reg) {
+ duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, forced_reg, x->regconst);
} else {
- if ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) && !DUK__ISTEMP(comp_ctx, x->regconst)) {
- duk_reg_t dest = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, (duk_regconst_t) dest, x->regconst);
- return (duk_regconst_t) dest;
- } else {
- return x->regconst;
- }
+ ; /* already in correct reg */
}
+ return (duk_regconst_t) forced_reg;
}
+
+ DUK_ASSERT(forced_reg < 0);
+ if (x->regconst & DUK__CONST_MARKER) {
+ if (!(flags & DUK__IVAL_FLAG_ALLOW_CONST)) {
+ duk_reg_t dest = DUK__ALLOCTEMP(comp_ctx);
+ duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, (duk_regconst_t) dest, x->regconst);
+ return (duk_regconst_t) dest;
+ }
+ return x->regconst;
+ }
+
+ DUK_ASSERT(forced_reg < 0 && !(x->regconst & DUK__CONST_MARKER));
+ if ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) && !DUK__ISTEMP(comp_ctx, x->regconst)) {
+ duk_reg_t dest = DUK__ALLOCTEMP(comp_ctx);
+ duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, (duk_regconst_t) dest, x->regconst);
+ return (duk_regconst_t) dest;
+ }
+ return x->regconst;
}
default: {
break;
@@ -58685,7 +60292,7 @@ DUK_LOCAL duk_reg_t duk__ivalue_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x)
}
#if 0 /* unused */
-DUK_LOCAL duk_reg_t duk__ivalue_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
+DUK_LOCAL duk_reg_t duk__ivalue_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/);
}
#endif
@@ -58699,6 +60306,10 @@ DUK_LOCAL duk_regconst_t duk__ivalue_toregconst(duk_compiler_ctx *comp_ctx, duk_
return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/);
}
+DUK_LOCAL duk_regconst_t duk__ivalue_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
+ return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/);
+}
+
/* The issues below can be solved with better flags */
/* XXX: many operations actually want toforcedtemp() -- brand new temp? */
@@ -59663,7 +61274,7 @@ DUK_LOCAL void duk__expr_nud(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
* such that parsing ends at an LPAREN (CallExpression) but not at
* a PERIOD or LBRACKET (MemberExpression).
*
- * See doc/compiler.txt for discussion on the parsing approach,
+ * See doc/compiler.rst for discussion on the parsing approach,
* and testcases/test-dev-new.js for a bunch of documented tests.
*/
@@ -60512,7 +62123,7 @@ DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_i
* Truthval determines when to skip right-hand-side.
* For logical AND truthval=1, for logical OR truthval=0.
*
- * See doc/compiler.txt for discussion on compiling logical
+ * See doc/compiler.rst for discussion on compiling logical
* AND and OR expressions. The approach here is very simplistic,
* generating extra jumps and multiple evaluations of truth values,
* but generates code on-the-fly with only local back-patching.
@@ -60558,11 +62169,21 @@ DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_i
* Syntactically valid left-hand-side forms which are not accepted as
* left-hand-side values (e.g. as in "f() = 1") must NOT cause a
* SyntaxError, but rather a run-time ReferenceError.
+ *
+ * Assignment expression value is conceptually the LHS/RHS value
+ * copied into a fresh temporary so that it won't change even if
+ * LHS/RHS values change (e.g. when they're identifiers). Doing this
+ * concretely produces inefficient bytecode, so we try to avoid the
+ * extra temporary for some known-to-be-safe cases. Currently the
+ * only safe case we detect is a "top level assignment", for example
+ * "x = y + z;", where the assignment expression value is ignored.
+ * See: test-dev-assign-expr.js and test-bug-assign-mutate-gh381.js.
*/
{
duk_small_uint_t args_op = args >> 8;
duk_small_uint_t args_rbp = args & 0xff;
+ duk_bool_t toplevel_assign;
/* XXX: here we need to know if 'left' is left-hand-side compatible.
* That information is no longer available from current expr parsing
@@ -60570,44 +62191,89 @@ DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_i
* some other means.
*/
+ /* A top-level assignment is e.g. "x = y;". For these it's safe
+ * to use the RHS as-is as the expression value, even if the RHS
+ * is a reg-bound identifier. The RHS ('res') is right associative
+ * so it has consumed all other assignment level operations; the
+ * only relevant lower binding power construct is comma operator
+ * which will ignore the expression value provided here.
+ */
+ toplevel_assign = (comp_ctx->curr_func.nud_count == 1 && /* one token before */
+ comp_ctx->curr_func.led_count == 1); /* one operator (= assign) */
+ DUK_DDD(DUK_DDDPRINT("assignment: nud_count=%ld, led_count=%ld, toplevel_assign=%ld",
+ (long) comp_ctx->curr_func.nud_count,
+ (long) comp_ctx->curr_func.led_count,
+ (long) toplevel_assign));
+
if (left->t == DUK_IVAL_VAR) {
duk_hstring *h_varname;
duk_reg_t reg_varbind;
duk_regconst_t rc_varname;
- duk_regconst_t rc_res;
- duk_reg_t reg_temp;
- /* already in fluly evaluated form */
- DUK_ASSERT(left->x1.t == DUK_ISPEC_VALUE);
+ DUK_ASSERT(left->x1.t == DUK_ISPEC_VALUE); /* LHS is already side effect free */
- duk__expr_toreg(comp_ctx, res, args_rbp /*rbp_flags*/);
- DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST);
+ /* Keep the RHS as an unresolved ivalue for now, so it
+ * can be a plain value or a unary/binary operation here.
+ * We resolve it before finishing but doing it later allows
+ * better bytecode in some cases.
+ */
+ duk__expr(comp_ctx, res, args_rbp /*rbp_flags*/);
h_varname = duk_get_hstring(ctx, left->x1.valstack_idx);
DUK_ASSERT(h_varname != NULL);
-
- /* E5 Section 11.13.1 (and others for other assignments), step 4 */
if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) {
+ /* E5 Section 11.13.1 (and others for other assignments), step 4 */
goto syntax_error_lvalue;
}
-
duk_dup(ctx, left->x1.valstack_idx);
(void) duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname);
- DUK_DDD(DUK_DDDPRINT("assign to '%!O' -> reg_varbind=%ld, rc_varname=%ld",
- (duk_heaphdr *) h_varname, (long) reg_varbind, (long) rc_varname));
-
if (args_op == DUK_OP_NONE) {
- rc_res = res->x1.regconst;
+ if (toplevel_assign) {
+ /* Any 'res' will do. */
+ DUK_DDD(DUK_DDDPRINT("plain assignment, toplevel assign, use as is"));
+ } else {
+ /* 'res' must be a plain ivalue, and not register-bound variable. */
+ DUK_DDD(DUK_DDDPRINT("plain assignment, not toplevel assign, ensure not a reg-bound identifier"));
+ if (res->t != DUK_IVAL_PLAIN || (res->x1.t == DUK_ISPEC_REGCONST &&
+ (res->x1.regconst & DUK__CONST_MARKER) == 0 &&
+ !DUK__ISTEMP(comp_ctx, res->x1.regconst))) {
+ duk__ivalue_totempconst(comp_ctx, res);
+ }
+ }
} else {
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
+ duk__ivalue_toregconst(comp_ctx, res);
+ DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST);
+
if (reg_varbind >= 0) {
+ duk_reg_t reg_res;
+
+ if (toplevel_assign) {
+ /* 'reg_varbind' is the operation result and can also
+ * become the expression value for top level assignments
+ * such as: "var x; x += y;".
+ */
+ reg_res = reg_varbind;
+ } else {
+ /* Not safe to use 'reg_varbind' as assignment expression
+ * value, so go through a temp.
+ */
+ reg_res = DUK__ALLOCTEMP(comp_ctx);
+ }
+
duk__emit_a_b_c(comp_ctx,
args_op,
- (duk_regconst_t) reg_temp,
+ (duk_regconst_t) reg_res,
(duk_regconst_t) reg_varbind,
res->x1.regconst);
+ res->x1.regconst = (duk_regconst_t) reg_res;
} else {
+ /* When LHS is not register bound, always go through a
+ * temporary. No optimization for top level assignment.
+ */
+ duk_reg_t reg_temp;
+ reg_temp = DUK__ALLOCTEMP(comp_ctx);
+
duk__emit_a_bc(comp_ctx,
DUK_OP_GETVAR,
(duk_regconst_t) reg_temp,
@@ -60617,40 +62283,57 @@ DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_i
(duk_regconst_t) reg_temp,
(duk_regconst_t) reg_temp,
res->x1.regconst);
+ res->x1.regconst = (duk_regconst_t) reg_temp;
}
- rc_res = (duk_regconst_t) reg_temp;
+
+ DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST);
}
+ /* At this point 'res' holds the potential expression value.
+ * It can be basically any ivalue here, including a reg-bound
+ * identifier (if code above deems it safe) or a unary/binary
+ * operation. Operations must be resolved to a side effect free
+ * plain value, and the side effects must happen exactly once.
+ */
+
if (reg_varbind >= 0) {
- duk__emit_a_bc(comp_ctx,
- DUK_OP_LDREG,
- (duk_regconst_t) reg_varbind,
- rc_res);
+ if (res->t != DUK_IVAL_PLAIN) {
+ /* Resolve 'res' directly into the LHS binding, and use
+ * that as the expression value if safe. If not safe,
+ * resolve to a temp/const and copy to LHS.
+ */
+ if (toplevel_assign) {
+ duk__ivalue_toforcedreg(comp_ctx, res, (duk_int_t) reg_varbind);
+ } else {
+ duk__ivalue_totempconst(comp_ctx, res);
+ duk__copy_ivalue(comp_ctx, res, left); /* use 'left' as a temp */
+ duk__ivalue_toforcedreg(comp_ctx, left, (duk_int_t) reg_varbind);
+ }
+ } else {
+ /* Use 'res' as the expression value (it's side effect
+ * free and may be a plain value, a register, or a
+ * constant) and write it to the LHS binding too.
+ */
+ duk__copy_ivalue(comp_ctx, res, left); /* use 'left' as a temp */
+ duk__ivalue_toforcedreg(comp_ctx, left, (duk_int_t) reg_varbind);
+ }
} else {
- /* Only a reg fits into 'A' and reg_res may be a const in
- * straight assignment.
+ /* Only a reg fits into 'A' so coerce 'res' into a register
+ * for PUTVAR.
*
* XXX: here the current A/B/C split is suboptimal: we could
* just use 9 bits for reg_res (and support constants) and 17
* instead of 18 bits for the varname const index.
*/
- if (DUK__ISCONST(comp_ctx, rc_res)) {
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_bc(comp_ctx,
- DUK_OP_LDCONST,
- (duk_regconst_t) reg_temp,
- rc_res);
- rc_res = (duk_regconst_t) reg_temp;
- }
+
+ duk__ivalue_toreg(comp_ctx, res);
duk__emit_a_bc(comp_ctx,
DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE,
- rc_res,
+ res->x1.regconst,
rc_varname);
}
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = rc_res;
+ /* 'res' contains expression value */
} else if (left->t == DUK_IVAL_PROP) {
/* E5 Section 11.13.1 (and others) step 4 never matches for prop writes -> no check */
duk_reg_t reg_obj;
@@ -60964,15 +62647,17 @@ DUK_LOCAL void duk__exprtop(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_sma
* Each helper needs at least 2-3 calls to make it worth while to wrap.
*/
+#if 0 /* unused */
DUK_LOCAL duk_reg_t duk__expr_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
duk__expr(comp_ctx, res, rbp_flags);
return duk__ivalue_toreg(comp_ctx, res);
}
+#endif
#if 0 /* unused */
-DUK_LOCAL duk_reg_t duk__expr_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
+DUK_LOCAL duk_reg_t duk__expr_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
duk__expr(comp_ctx, res, rbp_flags);
- return duk__ivalue_totempreg(comp_ctx, res);
+ return duk__ivalue_totemp(comp_ctx, res);
}
#endif
@@ -60987,6 +62672,13 @@ DUK_LOCAL duk_regconst_t duk__expr_toregconst(duk_compiler_ctx *comp_ctx, duk_iv
return duk__ivalue_toregconst(comp_ctx, res);
}
+#if 0 /* unused */
+DUK_LOCAL duk_regconst_t duk__expr_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
+ duk__expr(comp_ctx, res, rbp_flags);
+ return duk__ivalue_totempconst(comp_ctx, res);
+}
+#endif
+
DUK_LOCAL void duk__expr_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
duk__expr(comp_ctx, res, rbp_flags);
duk__ivalue_toplain(comp_ctx, res);
@@ -61003,9 +62695,9 @@ DUK_LOCAL duk_reg_t duk__exprtop_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *r
}
#if 0 /* unused */
-DUK_LOCAL duk_reg_t duk__exprtop_totempreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
+DUK_LOCAL duk_reg_t duk__exprtop_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
duk__exprtop(comp_ctx, res, rbp_flags);
- return duk__ivalue_totempreg(comp_ctx, res);
+ return duk__ivalue_totemp(comp_ctx, res);
}
#endif
@@ -61172,7 +62864,7 @@ DUK_LOCAL void duk__parse_var_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res)
DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) {
duk_hthread *thr = comp_ctx->thr;
duk_context *ctx = (duk_context *) thr;
- duk_int_t pc_v34_lhs; /* start variant 3/4 left-hand-side code (L1 in doc/compiler.txt example) */
+ duk_int_t pc_v34_lhs; /* start variant 3/4 left-hand-side code (L1 in doc/compiler.rst example) */
duk_reg_t temp_reset; /* knock back "next temp" to this whenever possible */
duk_reg_t reg_temps; /* preallocated temporaries (2) for variants 3 and 4 */
@@ -61199,7 +62891,7 @@ DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res,
* Parsing these without arbitrary lookahead or backtracking is relatively
* tricky but we manage to do so for now.
*
- * See doc/compiler.txt for a detailed discussion of control flow
+ * See doc/compiler.rst for a detailed discussion of control flow
* issues, evaluation order issues, etc.
*/
@@ -61426,7 +63118,7 @@ DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res,
*
* Variables set before entering here:
*
- * pc_v34_lhs: insert a "JUMP L2" here (see doc/compiler.txt example).
+ * pc_v34_lhs: insert a "JUMP L2" here (see doc/compiler.rst example).
* reg_temps + 0: iteration target value (written to LHS)
* reg_temps + 1: enumerator object
*/
@@ -61441,7 +63133,7 @@ DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res,
/* First we need to insert a jump in the middle of previously
* emitted code to get the control flow right. No jumps can
- * cross the position where the jump is inserted. See doc/compiler.txt
+ * cross the position where the jump is inserted. See doc/compiler.rst
* for discussion on the intricacies of control flow and side effects
* for variants 3 and 4.
*/
@@ -61556,7 +63248,7 @@ DUK_LOCAL void duk__parse_switch_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re
* only process the first match before switching to a "propagation" mode
* where case values are no longer evaluated
*
- * See E5 Section 12.11. Also see doc/compiler.txt for compilation
+ * See E5 Section 12.11. Also see doc/compiler.rst for compilation
* discussion.
*/
@@ -61899,12 +63591,6 @@ DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re
DUK_ERROR(thr, DUK_ERR_SYNTAX_ERROR, DUK_STR_INVALID_RETURN);
}
- /* Use a fast return when possible. A fast return does not cause a longjmp()
- * unnecessarily. A fast return can be done when no TCF catchers are active
- * (this includes 'try' and 'with' statements). Active label catches do not
- * prevent a fast return; they're unwound on return automatically.
- */
-
ret_flags = 0;
if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON || /* explicit semi follows */
@@ -61926,10 +63612,10 @@ DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re
pc_after_expr = duk__get_current_pc(comp_ctx);
/* Tail call check: if last opcode emitted was CALL(I), and
- * the context allows it, change the CALL(I) to a tailcall.
- * This doesn't guarantee that a tailcall will be allowed at
+ * the context allows it, change the CALL(I) to a tail call.
+ * This doesn't guarantee that a tail call will be allowed at
* runtime, so the RETURN must still be emitted. (Duktape
- * 0.10.0 avoided this and simulated a RETURN if a tailcall
+ * 0.10.0 avoided this and simulated a RETURN if a tail call
* couldn't be used at runtime; but this didn't work
* correctly with a thread yield/resume, see
* test-bug-tailcall-thread-yield-resume.js for discussion.)
@@ -61940,7 +63626,7 @@ DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re
* { return 1; }), 2' the last opcode emitted is CALL (no
* bytecode is emitted for '2') but 'rc_val' indicates
* constant '2'. Similarly if '2' is replaced by a register
- * bound variable, no opcodes are emitted but tailcall would
+ * bound variable, no opcodes are emitted but tail call would
* be incorrect.
*
* This is tricky and easy to get wrong. It would be best to
@@ -61985,21 +63671,6 @@ DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *re
ret_flags = DUK_BC_RETURN_FLAG_HAVE_RETVAL;
}
- /* XXX: For now, "fast returns" are disabled. The compiler doesn't track
- * label site depth so when it emits a fast return, it doesn't know whether
- * label sites exist or not. Label sites are emitted for e.g. for loops,
- * so it's probably quite relevant to handle them in the executor's fast
- * return handler.
- */
-#if 0
- if (comp_ctx->curr_func.catch_depth == 0) {
- DUK_DDD(DUK_DDDPRINT("fast return allowed -> use fast return"));
- ret_flags |= DUK_BC_RETURN_FLAG_FAST;
- } else {
- DUK_DDD(DUK_DDDPRINT("fast return not allowed -> use slow return"));
- }
-#endif
-
duk__emit_a_b(comp_ctx,
DUK_OP_RETURN | DUK__EMIT_FLAG_NO_SHUFFLE_A,
(duk_regconst_t) ret_flags /*flags*/,
@@ -62039,7 +63710,7 @@ DUK_LOCAL void duk__parse_try_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res)
/*
* See the following documentation for discussion:
*
- * doc/execution.txt: control flow details
+ * doc/execution.rst: control flow details
*
* Try, catch, and finally "parts" are Blocks, not Statements, so
* they must always be delimited by curly braces. This is unlike e.g.
@@ -62491,7 +64162,7 @@ DUK_LOCAL void duk__parse_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_
*
* https://bugs.ecmascript.org/show_bug.cgi?id=8
*
- * See doc/compiler.txt for details.
+ * See doc/compiler.rst for details.
*/
DUK_DDD(DUK_DDDPRINT("do statement"));
DUK_ASSERT(label_id >= 0);
@@ -62580,13 +64251,13 @@ DUK_LOCAL void duk__parse_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_
break;
}
case DUK_TOK_DEBUGGER: {
+ duk__advance(comp_ctx);
#if defined(DUK_USE_DEBUGGER_SUPPORT)
DUK_DDD(DUK_DDDPRINT("debugger statement: debugging enabled, emit debugger opcode"));
duk__emit_extraop_only(comp_ctx, DUK_EXTRAOP_DEBUGGER);
#else
DUK_DDD(DUK_DDDPRINT("debugger statement: ignored"));
#endif
- duk__advance(comp_ctx);
stmt_flags = DUK__HAS_TERM;
break;
}
@@ -63477,16 +65148,16 @@ DUK_LOCAL void duk__parse_func_body(duk_compiler_ctx *comp_ctx, duk_bool_t expec
* (directly or via a jump)
*/
- DUK_ASSERT(comp_ctx->curr_func.catch_depth == 0); /* fast returns are always OK here */
+ DUK_ASSERT(comp_ctx->curr_func.catch_depth == 0);
if (reg_stmt_value >= 0) {
duk__emit_a_b(comp_ctx,
DUK_OP_RETURN | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- (duk_regconst_t) (DUK_BC_RETURN_FLAG_HAVE_RETVAL | DUK_BC_RETURN_FLAG_FAST) /*flags*/,
+ (duk_regconst_t) DUK_BC_RETURN_FLAG_HAVE_RETVAL /*flags*/,
(duk_regconst_t) reg_stmt_value /*reg*/);
} else {
duk__emit_a_b(comp_ctx,
DUK_OP_RETURN | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- (duk_regconst_t) DUK_BC_RETURN_FLAG_FAST /*flags*/,
+ (duk_regconst_t) 0 /*flags*/,
(duk_regconst_t) 0 /*reg(ignored)*/);
}
@@ -63859,7 +65530,7 @@ DUK_LOCAL duk_ret_t duk__js_compile_raw(duk_context *ctx) {
comp_ctx->tok12_idx = entry_top + 2;
comp_ctx->tok21_idx = entry_top + 3;
comp_ctx->tok22_idx = entry_top + 4;
- comp_ctx->recursion_limit = DUK_COMPILER_RECURSION_LIMIT;
+ comp_ctx->recursion_limit = DUK_USE_COMPILER_RECLIMIT;
/* comp_ctx->lex has been pre-initialized by caller: it has been
* zeroed and input/input_length has been set.
@@ -63871,7 +65542,7 @@ DUK_LOCAL duk_ret_t duk__js_compile_raw(duk_context *ctx) {
comp_ctx->lex.buf_idx = entry_top + 0;
comp_ctx->lex.buf = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, entry_top + 0);
DUK_ASSERT(comp_ctx->lex.buf != NULL);
- DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(comp_ctx->lex.buf));
+ DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(comp_ctx->lex.buf) && !DUK_HBUFFER_HAS_EXTERNAL(comp_ctx->lex.buf));
comp_ctx->lex.token_limit = DUK_COMPILER_TOKEN_LIMIT;
lex_pt->offset = 0;
@@ -64015,22 +65686,24 @@ DUK_INTERNAL void duk_js_compile(duk_hthread *thr, const duk_uint8_t *src_buffer
/* include removed: duk_internal.h */
/*
- * Local declarations
+ * Local declarations.
*/
-DUK_LOCAL_DECL void duk__reconfig_valstack(duk_hthread *thr, duk_size_t act_idx, duk_small_uint_t retval_count);
+DUK_LOCAL_DECL void duk__js_execute_bytecode_inner(duk_hthread *entry_thread, duk_size_t entry_callstack_top);
/*
* Arithmetic, binary, and logical helpers.
*
* Note: there is no opcode for logical AND or logical OR; this is on
* purpose, because the evalution order semantics for them make such
- * opcodes pretty pointless (short circuiting means they are most
- * comfortably implemented as jumps). However, a logical NOT opcode
+ * opcodes pretty pointless: short circuiting means they are most
+ * comfortably implemented as jumps. However, a logical NOT opcode
* is useful.
*
* Note: careful with duk_tval pointers here: they are potentially
- * invalidated by any DECREF and almost any API call.
+ * invalidated by any DECREF and almost any API call. It's still
+ * preferable to work without making a copy but that's not always
+ * possible.
*/
DUK_LOCAL duk_double_t duk__compute_mod(duk_double_t d1, duk_double_t d2) {
@@ -64080,7 +65753,6 @@ DUK_LOCAL void duk__vm_arith_add(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_
if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) {
duk_int64_t v1, v2, v3;
duk_int32_t v3_hi;
- duk_tval tv_tmp;
duk_tval *tv_z;
/* Input values are signed 48-bit so we can detect overflow
@@ -64093,10 +65765,7 @@ DUK_LOCAL void duk__vm_arith_add(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_
v3_hi = (duk_int32_t) (v3 >> 32);
if (DUK_LIKELY(v3_hi >= -0x8000LL && v3_hi <= 0x7fffLL)) {
tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_z);
- DUK_TVAL_SET_FASTINT(tv_z, v3);
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, v3); /* side effects */
return;
} else {
/* overflow, fall through */
@@ -64106,7 +65775,6 @@ DUK_LOCAL void duk__vm_arith_add(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_
#endif /* DUK_USE_FASTINT */
if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) {
- duk_tval tv_tmp;
duk_tval *tv_z;
du.d = DUK_TVAL_GET_NUMBER(tv_x) + DUK_TVAL_GET_NUMBER(tv_y);
@@ -64114,10 +65782,7 @@ DUK_LOCAL void duk__vm_arith_add(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_
DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du));
tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_z);
- DUK_TVAL_SET_NUMBER(tv_z, du.d);
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, du.d); /* side effects */
return;
}
@@ -64170,7 +65835,6 @@ DUK_LOCAL void duk__vm_arith_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tva
*/
duk_context *ctx = (duk_context *) thr;
- duk_tval tv_tmp;
duk_tval *tv_z;
duk_double_t d1, d2;
duk_double_union du;
@@ -64247,10 +65911,7 @@ DUK_LOCAL void duk__vm_arith_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tva
v3_hi = (duk_int32_t) (v3 >> 32);
if (DUK_LIKELY(v3_hi >= -0x8000LL && v3_hi <= 0x7fffLL)) {
tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_z);
- DUK_TVAL_SET_FASTINT(tv_z, v3);
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, v3); /* side effects */
return;
}
/* fall through if overflow etc */
@@ -64303,10 +65964,7 @@ DUK_LOCAL void duk__vm_arith_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tva
DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du));
tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_z);
- DUK_TVAL_SET_NUMBER(tv_z, du.d);
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, du.d); /* side effects */
}
DUK_LOCAL void duk__vm_bitwise_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_uint_fast_t idx_z, duk_small_uint_fast_t opcode) {
@@ -64321,7 +65979,6 @@ DUK_LOCAL void duk__vm_bitwise_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_t
*/
duk_context *ctx = (duk_context *) thr;
- duk_tval tv_tmp;
duk_tval *tv_z;
duk_int32_t i1, i2, i3;
duk_uint32_t u1, u2, u3;
@@ -64409,15 +66066,14 @@ DUK_LOCAL void duk__vm_bitwise_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_t
#if defined(DUK_USE_FASTINT)
/* Result is always fastint compatible. */
- /* XXX: set 32-bit result (but must handle signed and unsigned) */
+ /* XXX: Set 32-bit result (but must then handle signed and
+ * unsigned results separately).
+ */
fi3 = (duk_int64_t) i3;
fastint_result_set:
tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_z);
- DUK_TVAL_SET_FASTINT(tv_z, fi3);
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, fi3); /* side effects */
#else
d3 = (duk_double_t) i3;
@@ -64426,10 +66082,7 @@ DUK_LOCAL void duk__vm_bitwise_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_t
DUK_ASSERT_DOUBLE_IS_NORMALIZED(d3); /* always normalized */
tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_z);
- DUK_TVAL_SET_NUMBER(tv_z, d3);
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, d3); /* side effects */
#endif
}
@@ -64510,7 +66163,6 @@ DUK_LOCAL void duk__vm_bitwise_not(duk_hthread *thr, duk_tval *tv_x, duk_small_u
*/
duk_context *ctx = (duk_context *) thr;
- duk_tval tv_tmp;
duk_tval *tv_z;
duk_int32_t i1, i2;
#if !defined(DUK_USE_FASTINT)
@@ -64540,10 +66192,7 @@ DUK_LOCAL void duk__vm_bitwise_not(duk_hthread *thr, duk_tval *tv_x, duk_small_u
#if defined(DUK_USE_FASTINT)
/* Result is always fastint compatible. */
tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_z);
- DUK_TVAL_SET_FASTINT_I32(tv_z, i2);
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_FASTINT_I32_UPDREF(thr, tv_z, i2); /* side effects */
#else
d2 = (duk_double_t) i2;
@@ -64551,10 +66200,7 @@ DUK_LOCAL void duk__vm_bitwise_not(duk_hthread *thr, duk_tval *tv_x, duk_small_u
DUK_ASSERT_DOUBLE_IS_NORMALIZED(d2); /* always normalized */
tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_z);
- DUK_TVAL_SET_NUMBER(tv_z, d2);
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_z)); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, d2); /* side effects */
#endif
}
@@ -64563,7 +66209,6 @@ DUK_LOCAL void duk__vm_logical_not(duk_hthread *thr, duk_tval *tv_x, duk_tval *t
* E5 Section 11.4.9
*/
- duk_tval tv_tmp;
duk_bool_t res;
DUK_ASSERT(thr != NULL);
@@ -64579,37 +66224,35 @@ DUK_LOCAL void duk__vm_logical_not(duk_hthread *thr, duk_tval *tv_x, duk_tval *t
res = duk_js_toboolean(tv_x); /* does not modify tv_x */
DUK_ASSERT(res == 0 || res == 1);
res ^= 1;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_z);
- DUK_TVAL_SET_BOOLEAN(tv_z, res); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv_z, res); /* side effects */
}
/*
- * Longjmp handler for the bytecode executor (and a bunch of static
- * helpers for it).
- *
- * Any type of longjmp() can be caught here, including intra-function
- * longjmp()s like 'break', 'continue', (slow) 'return', 'yield', etc.
+ * Longjmp and other control flow transfer for the bytecode executor.
*
- * Error policy: should not ordinarily throw errors. Errors thrown
- * will bubble outwards.
+ * The longjmp handler can handle all longjmp types: error, yield, and
+ * resume (pseudotypes are never actually thrown).
*
- * Returns:
- * 0 restart execution
- * 1 bytecode executor finished
- * 2 rethrow longjmp
+ * Error policy for longjmp: should not ordinarily throw errors; if errors
+ * occur (e.g. due to out-of-memory) they bubble outwards rather than being
+ * handled recursively.
*/
-/* XXX: duk_api operations for cross-thread reg manipulation? */
-/* XXX: post-condition: value stack must be correct; for ecmascript functions, clamped to 'nregs' */
-
#define DUK__LONGJMP_RESTART 0 /* state updated, restart bytecode execution */
-#define DUK__LONGJMP_FINISHED 1 /* exit bytecode executor with return value */
-#define DUK__LONGJMP_RETHROW 2 /* exit bytecode executor by rethrowing an error to caller */
+#define DUK__LONGJMP_RETHROW 1 /* exit bytecode executor by rethrowing an error to caller */
+
+#define DUK__RETHAND_RESTART 0 /* state updated, restart bytecode execution */
+#define DUK__RETHAND_FINISHED 1 /* exit bytecode execution with return value */
+
+/* XXX: optimize reconfig valstack operations so that resize, clamp, and setting
+ * top are combined into one pass.
+ */
-/* only called when act_idx points to an Ecmascript function */
-DUK_LOCAL void duk__reconfig_valstack(duk_hthread *thr, duk_size_t act_idx, duk_small_uint_t retval_count) {
+/* Reconfigure value stack for return to an Ecmascript function at 'act_idx'. */
+DUK_LOCAL void duk__reconfig_valstack_ecma_return(duk_hthread *thr, duk_size_t act_idx) {
+ duk_activation *act;
duk_hcompiledfunction *h_func;
+ duk_idx_t clamp_top;
DUK_ASSERT(thr != NULL);
DUK_ASSERT_DISABLE(act_idx >= 0); /* unsigned */
@@ -64617,91 +66260,109 @@ DUK_LOCAL void duk__reconfig_valstack(duk_hthread *thr, duk_size_t act_idx, duk_
DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + act_idx)));
DUK_ASSERT_DISABLE(thr->callstack[act_idx].idx_retval >= 0); /* unsigned */
- thr->valstack_bottom = thr->valstack + thr->callstack[act_idx].idx_bottom;
-
- /* clamp so that retval is at the top (retval_count == 1) or register just before
- * intended retval is at the top (retval_count == 0, happens e.g. with 'finally').
+ /* Clamp so that values at 'clamp_top' and above are wiped and won't
+ * retain reachable garbage. Then extend to 'nregs' because we're
+ * returning to an Ecmascript function.
*/
- duk_set_top((duk_context *) thr,
- (duk_idx_t) (thr->callstack[act_idx].idx_retval -
- thr->callstack[act_idx].idx_bottom +
- retval_count));
- /*
- * When returning to an Ecmascript function, extend the valstack
- * top to 'nregs' always.
- */
+ act = thr->callstack + act_idx;
+ h_func = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
- h_func = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(thr->callstack + act_idx);
+ thr->valstack_bottom = thr->valstack + act->idx_bottom;
+ DUK_ASSERT(act->idx_retval >= act->idx_bottom);
+ clamp_top = (duk_idx_t) (act->idx_retval - act->idx_bottom + 1); /* +1 = one retval */
+ duk_set_top((duk_context *) thr, clamp_top);
+ act = NULL;
(void) duk_valstack_resize_raw((duk_context *) thr,
- (thr->valstack_bottom - thr->valstack) + /* bottom of current func */
- h_func->nregs + /* reg count */
- DUK_VALSTACK_INTERNAL_EXTRA, /* + spare */
- DUK_VSRESIZE_FLAG_SHRINK | /* flags */
+ (thr->valstack_bottom - thr->valstack) + /* bottom of current func */
+ h_func->nregs + /* reg count */
+ DUK_VALSTACK_INTERNAL_EXTRA, /* + spare */
+ DUK_VSRESIZE_FLAG_SHRINK | /* flags */
0 /* no compact */ |
DUK_VSRESIZE_FLAG_THROW);
duk_set_top((duk_context *) thr, h_func->nregs);
}
-DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx, duk_bool_t is_finally) {
- duk_context *ctx = (duk_context *) thr;
- duk_tval tv_tmp;
- duk_tval *tv1;
+DUK_LOCAL void duk__reconfig_valstack_ecma_catcher(duk_hthread *thr, duk_size_t act_idx, duk_size_t cat_idx) {
+ duk_activation *act;
+ duk_catcher *cat;
+ duk_hcompiledfunction *h_func;
+ duk_idx_t clamp_top;
- DUK_DDD(DUK_DDDPRINT("handling catch/finally, cat_idx=%ld, is_finally=%ld",
- (long) cat_idx, (long) is_finally));
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT_DISABLE(act_idx >= 0); /* unsigned */
+ DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + act_idx) != NULL);
+ DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + act_idx)));
+ DUK_ASSERT_DISABLE(thr->callstack[act_idx].idx_retval >= 0); /* unsigned */
- /*
- * Set caught value and longjmp type to catcher regs.
- */
+ act = thr->callstack + act_idx;
+ cat = thr->catchstack + cat_idx;
+ h_func = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
+
+ thr->valstack_bottom = thr->valstack + act->idx_bottom;
+ DUK_ASSERT(cat->idx_base >= act->idx_bottom);
+ clamp_top = (duk_idx_t) (cat->idx_base - act->idx_bottom + 2); /* +2 = catcher value, catcher lj_type */
+ duk_set_top((duk_context *) thr, clamp_top);
+ act = NULL;
+ cat = NULL;
- DUK_DDD(DUK_DDDPRINT("writing catch registers: idx_base=%ld -> %!T, idx_base+1=%ld -> %!T",
- (long) thr->catchstack[cat_idx].idx_base,
- (duk_tval *) &thr->heap->lj.value1,
- (long) (thr->catchstack[cat_idx].idx_base + 1),
- (duk_tval *) &thr->heap->lj.value2));
+ (void) duk_valstack_resize_raw((duk_context *) thr,
+ (thr->valstack_bottom - thr->valstack) + /* bottom of current func */
+ h_func->nregs + /* reg count */
+ DUK_VALSTACK_INTERNAL_EXTRA, /* + spare */
+ DUK_VSRESIZE_FLAG_SHRINK | /* flags */
+ 0 /* no compact */ |
+ DUK_VSRESIZE_FLAG_THROW);
+
+ duk_set_top((duk_context *) thr, h_func->nregs);
+}
+
+/* Set catcher regs: idx_base+0 = value, idx_base+1 = lj_type. */
+DUK_LOCAL void duk__set_catcher_regs(duk_hthread *thr, duk_size_t cat_idx, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) {
+ duk_tval *tv1;
+
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(tv_val_unstable != NULL);
tv1 = thr->valstack + thr->catchstack[cat_idx].idx_base;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, &thr->heap->lj.value1);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_ASSERT(tv1 < thr->valstack_top);
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv_val_unstable); /* side effects */
tv1 = thr->valstack + thr->catchstack[cat_idx].idx_base + 1;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_NUMBER(tv1, (duk_double_t) thr->heap->lj.type); /* XXX: set int */
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv1)); /* no need to incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_ASSERT(tv1 < thr->valstack_top);
- /*
- * Unwind catchstack and callstack.
- *
- * The 'cat_idx' catcher is always kept, even when executing finally.
- */
+#if defined(DUK_USE_FASTINT)
+ DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv1, (duk_uint32_t) lj_type); /* side effects */
+#else
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv1, (duk_double_t) lj_type); /* side effects */
+#endif
+}
+
+DUK_LOCAL void duk__handle_catch(duk_hthread *thr, duk_size_t cat_idx, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) {
+ duk_context *ctx;
+ duk_activation *act;
+
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(tv_val_unstable != NULL);
+ ctx = (duk_context *) thr;
+
+ duk__set_catcher_regs(thr, cat_idx, tv_val_unstable, lj_type);
duk_hthread_catchstack_unwind(thr, cat_idx + 1);
duk_hthread_callstack_unwind(thr, thr->catchstack[cat_idx].callstack_index + 1);
- /*
- * Reconfigure valstack to 'nregs' (this is always the case for
- * Ecmascript functions).
- */
-
DUK_ASSERT(thr->callstack_top >= 1);
DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL);
DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)));
- thr->valstack_bottom = thr->valstack + (thr->callstack + thr->callstack_top - 1)->idx_bottom;
- duk_set_top((duk_context *) thr, ((duk_hcompiledfunction *) DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1))->nregs);
+ duk__reconfig_valstack_ecma_catcher(thr, thr->callstack_top - 1, cat_idx);
- /*
- * Reset PC: resume execution from catch or finally jump slot.
- */
-
- (thr->callstack + thr->callstack_top - 1)->pc =
- thr->catchstack[cat_idx].pc_base + (is_finally ? 1 : 0);
+ DUK_ASSERT(thr->callstack_top >= 1);
+ act = thr->callstack + thr->callstack_top - 1;
+ act->curr_pc = thr->catchstack[cat_idx].pc_base + 0; /* +0 = catch */
+ act = NULL;
/*
* If entering a 'catch' block which requires an automatic
@@ -64713,8 +66374,7 @@ DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx
* which implies the binding is not deletable.
*/
- if (!is_finally && DUK_CAT_HAS_CATCH_BINDING_ENABLED(&thr->catchstack[cat_idx])) {
- duk_activation *act;
+ if (DUK_CAT_HAS_CATCH_BINDING_ENABLED(&thr->catchstack[cat_idx])) {
duk_hobject *new_env;
duk_hobject *act_lex_env;
@@ -64747,7 +66407,7 @@ DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx
DUK_HOBJECT_FLAG_EXTENSIBLE |
DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV),
act_lex_env);
- new_env = duk_require_hobject(ctx, -1);
+ new_env = duk_get_hobject(ctx, -1);
DUK_ASSERT(new_env != NULL);
DUK_DDD(DUK_DDDPRINT("new_env allocated: %!iO", (duk_heaphdr *) new_env));
@@ -64759,7 +66419,7 @@ DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx
DUK_ASSERT(thr->catchstack[cat_idx].h_varname != NULL);
duk_push_hstring(ctx, thr->catchstack[cat_idx].h_varname);
- duk_push_tval(ctx, &thr->heap->lj.value1);
+ duk_push_tval(ctx, thr->valstack + thr->catchstack[cat_idx].idx_base);
duk_xdef_prop(ctx, -3, DUK_PROPDESC_FLAGS_W); /* writable, not configurable */
act = thr->callstack + thr->callstack_top - 1;
@@ -64773,28 +66433,47 @@ DUK_LOCAL void duk__handle_catch_or_finally(duk_hthread *thr, duk_size_t cat_idx
DUK_DDD(DUK_DDDPRINT("new_env finished: %!iO", (duk_heaphdr *) new_env));
}
- if (is_finally) {
- DUK_CAT_CLEAR_FINALLY_ENABLED(&thr->catchstack[cat_idx]);
- } else {
- DUK_CAT_CLEAR_CATCH_ENABLED(&thr->catchstack[cat_idx]);
- }
+ DUK_CAT_CLEAR_CATCH_ENABLED(&thr->catchstack[cat_idx]);
}
-DUK_LOCAL void duk__handle_label(duk_hthread *thr, duk_size_t cat_idx) {
+DUK_LOCAL void duk__handle_finally(duk_hthread *thr, duk_size_t cat_idx, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) {
duk_activation *act;
- /* no callstack changes, no value stack changes */
-
DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(tv_val_unstable != NULL);
+
+ duk__set_catcher_regs(thr, cat_idx, tv_val_unstable, lj_type);
+
+ duk_hthread_catchstack_unwind(thr, cat_idx + 1); /* cat_idx catcher is kept, even for finally */
+ duk_hthread_callstack_unwind(thr, thr->catchstack[cat_idx].callstack_index + 1);
+
DUK_ASSERT(thr->callstack_top >= 1);
+ DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL);
+ DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)));
+
+ duk__reconfig_valstack_ecma_catcher(thr, thr->callstack_top - 1, cat_idx);
+ DUK_ASSERT(thr->callstack_top >= 1);
+ act = thr->callstack + thr->callstack_top - 1;
+ act->curr_pc = thr->catchstack[cat_idx].pc_base + 1; /* +1 = finally */
+ act = NULL;
+
+ DUK_CAT_CLEAR_FINALLY_ENABLED(&thr->catchstack[cat_idx]);
+}
+
+DUK_LOCAL void duk__handle_label(duk_hthread *thr, duk_size_t cat_idx, duk_small_uint_t lj_type) {
+ duk_activation *act;
+
+ DUK_ASSERT(thr != NULL);
+
+ DUK_ASSERT(thr->callstack_top >= 1);
act = thr->callstack + thr->callstack_top - 1;
DUK_ASSERT(DUK_ACT_GET_FUNC(act) != NULL);
DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(act)));
/* +0 = break, +1 = continue */
- act->pc = thr->catchstack[cat_idx].pc_base + (thr->heap->lj.type == DUK_LJ_TYPE_CONTINUE ? 1 : 0);
+ act->curr_pc = thr->catchstack[cat_idx].pc_base + (lj_type == DUK_LJ_TYPE_CONTINUE ? 1 : 0);
act = NULL; /* invalidated */
duk_hthread_catchstack_unwind(thr, cat_idx + 1); /* keep label catcher */
@@ -64802,38 +66481,32 @@ DUK_LOCAL void duk__handle_label(duk_hthread *thr, duk_size_t cat_idx) {
/* valstack should not need changes */
#if defined(DUK_USE_ASSERTIONS)
+ DUK_ASSERT(thr->callstack_top >= 1);
act = thr->callstack + thr->callstack_top - 1;
DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) ==
(duk_size_t) ((duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act))->nregs);
#endif
}
-/* Note: called for DUK_LJ_TYPE_YIELD and for DUK_LJ_TYPE_RETURN, when a
- * return terminates a thread and yields to the resumer.
+/* Called for handling both a longjmp() with type DUK_LJ_TYPE_YIELD and
+ * when a RETURN opcode terminates a thread and yields to the resumer.
*/
-DUK_LOCAL void duk__handle_yield(duk_hthread *thr, duk_hthread *resumer, duk_size_t act_idx) {
- duk_tval tv_tmp;
+DUK_LOCAL void duk__handle_yield(duk_hthread *thr, duk_hthread *resumer, duk_size_t act_idx, duk_tval *tv_val_unstable) {
duk_tval *tv1;
- /* this may also be called for DUK_LJ_TYPE_RETURN; this is OK as long as
- * lj.value1 is correct.
- */
-
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(resumer != NULL);
+ DUK_ASSERT(tv_val_unstable != NULL);
DUK_ASSERT(DUK_ACT_GET_FUNC(resumer->callstack + act_idx) != NULL);
DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(resumer->callstack + act_idx))); /* resume caller must be an ecmascript func */
- DUK_DDD(DUK_DDDPRINT("resume idx_retval is %ld", (long) resumer->callstack[act_idx].idx_retval));
-
tv1 = resumer->valstack + resumer->callstack[act_idx].idx_retval; /* return value from Duktape.Thread.resume() */
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, &thr->heap->lj.value1);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv_val_unstable); /* side effects */
duk_hthread_callstack_unwind(resumer, act_idx + 1); /* unwind to 'resume' caller */
/* no need to unwind catchstack */
- duk__reconfig_valstack(resumer, act_idx, 1); /* 1 = have retval */
+ duk__reconfig_valstack_ecma_return(resumer, act_idx);
/* caller must change active thread, and set thr->resumer to NULL */
}
@@ -64842,7 +66515,6 @@ DUK_LOCAL
duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
duk_hthread *entry_thread,
duk_size_t entry_callstack_top) {
- duk_tval tv_tmp;
duk_size_t entry_callstack_index;
duk_small_uint_t retval = DUK__LONGJMP_RESTART;
@@ -64855,6 +66527,7 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
/* 'thr' is the current thread, as no-one resumes except us and we
* switch 'thr' in that case.
*/
+ DUK_ASSERT(thr == thr->heap->curr_thread);
/*
* (Re)try handling the longjmp.
@@ -64959,16 +66632,13 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
tv = resumee->valstack + resumee->callstack[act_idx].idx_retval; /* return value from Duktape.Thread.yield() */
DUK_ASSERT(tv >= resumee->valstack && tv < resumee->valstack_top);
tv2 = &thr->heap->lj.value1;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_TVAL(tv, tv2);
- DUK_TVAL_INCREF(thr, tv);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv2); /* side effects */
duk_hthread_callstack_unwind(resumee, act_idx + 1); /* unwind to 'yield' caller */
/* no need to unwind catchstack */
- duk__reconfig_valstack(resumee, act_idx, 1); /* 1 = have retval */
+ duk__reconfig_valstack_ecma_return(resumee, act_idx);
resumee->resumer = thr;
resumee->state = DUK_HTHREAD_STATE_RUNNING;
@@ -64992,7 +66662,7 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
/* resumee: [... initial_func undefined(= this) resume_value ] */
- call_flags = DUK_CALL_FLAG_IS_RESUME; /* is resume, not a tailcall */
+ call_flags = DUK_CALL_FLAG_IS_RESUME; /* is resume, not a tail call */
setup_rc = duk_handle_ecma_call_setup(resumee,
1, /* num_stack_args */
@@ -65068,7 +66738,7 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
DUK_DD(DUK_DDPRINT("-> yield an error, converted to a throw in the resumer, propagate"));
goto check_longjmp;
} else {
- duk__handle_yield(thr, resumer, resumer->callstack_top - 2);
+ duk__handle_yield(thr, resumer, resumer->callstack_top - 2, &thr->heap->lj.value1);
thr->state = DUK_HTHREAD_STATE_YIELDED;
thr->resumer = NULL;
@@ -65086,201 +66756,6 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
break; /* never here */
}
- case DUK_LJ_TYPE_RETURN: {
- /*
- * Four possible outcomes:
- * * A 'finally' in the same function catches the 'return'.
- * (or)
- * * The return happens at the entry level of the bytecode
- * executor, so return from the executor (in C stack).
- * (or)
- * * There is a calling (Ecmascript) activation in the call
- * stack => return to it.
- * (or)
- * * There is no calling activation, and the thread is
- * terminated. There is always a resumer in this case,
- * which gets the return value similarly to a 'yield'
- * (except that the current thread can no longer be
- * resumed).
- */
-
- duk_tval *tv1;
- duk_hthread *resumer;
- duk_catcher *cat;
- duk_size_t orig_callstack_index;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(thr->catchstack != NULL);
-
- /* XXX: does not work if thr->catchstack is NULL */
- /* XXX: does not work if thr->catchstack is allocated but lowest pointer */
-
- cat = thr->catchstack + thr->catchstack_top - 1; /* may be < thr->catchstack initially */
- DUK_ASSERT(thr->callstack_top > 0); /* ensures callstack_top - 1 >= 0 */
- orig_callstack_index = thr->callstack_top - 1;
-
- while (cat >= thr->catchstack) {
- if (cat->callstack_index != orig_callstack_index) {
- break;
- }
- if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF &&
- DUK_CAT_HAS_FINALLY_ENABLED(cat)) {
- /* 'finally' catches */
- duk__handle_catch_or_finally(thr,
- cat - thr->catchstack,
- 1); /* is_finally */
-
- DUK_DD(DUK_DDPRINT("-> return caught by a finally (in the same function), restart execution"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- }
- cat--;
- }
- /* if out of catchstack, cat = thr->catchstack - 1 */
-
- DUK_DD(DUK_DDPRINT("no catcher in catch stack, return to calling activation / yield"));
-
- /* return to calling activation (if any) */
-
- if (thr == entry_thread &&
- thr->callstack_top == entry_callstack_top) {
- /* return to the bytecode executor caller */
-
- duk_push_tval((duk_context *) thr, &thr->heap->lj.value1);
-
- /* [ ... retval ] */
-
- DUK_DD(DUK_DDPRINT("-> return propagated up to entry level, exit bytecode executor"));
- retval = DUK__LONGJMP_FINISHED;
- goto wipe_and_return;
- }
-
- if (thr->callstack_top >= 2) {
- /* there is a caller; it MUST be an Ecmascript caller (otherwise it would
- * match entry level check)
- */
-
- DUK_DDD(DUK_DDDPRINT("slow return to Ecmascript caller, idx_retval=%ld, lj_value1=%!T",
- (long) (thr->callstack + thr->callstack_top - 2)->idx_retval,
- (duk_tval *) &thr->heap->lj.value1));
-
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2))); /* must be ecmascript */
-
- tv1 = thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, &thr->heap->lj.value1);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
-
- DUK_DDD(DUK_DDDPRINT("return value at idx_retval=%ld is %!T",
- (long) (thr->callstack + thr->callstack_top - 2)->idx_retval,
- (duk_tval *) (thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval)));
-
- duk_hthread_catchstack_unwind(thr, (cat - thr->catchstack) + 1); /* leave 'cat' as top catcher (also works if catchstack exhausted) */
- duk_hthread_callstack_unwind(thr, thr->callstack_top - 1);
- duk__reconfig_valstack(thr, thr->callstack_top - 1, 1); /* new top, i.e. callee */
-
- DUK_DD(DUK_DDPRINT("-> return not caught, restart execution in caller"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- }
-
- DUK_DD(DUK_DDPRINT("no calling activation, thread finishes (similar to yield)"));
-
- DUK_ASSERT(thr->resumer != NULL);
- DUK_ASSERT(thr->resumer->callstack_top >= 2); /* Ecmascript activation + Duktape.Thread.resume() activation */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1) != NULL &&
- DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1)) &&
- ((duk_hnativefunction *) DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1))->func == duk_bi_thread_resume); /* Duktape.Thread.resume() */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2) != NULL &&
- DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2))); /* an Ecmascript function */
- DUK_ASSERT_DISABLE((thr->resumer->callstack + thr->resumer->callstack_top - 2)->idx_retval >= 0); /* unsigned */
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING);
- DUK_ASSERT(thr->resumer->state == DUK_HTHREAD_STATE_RESUMED);
-
- resumer = thr->resumer;
-
- duk__handle_yield(thr, resumer, resumer->callstack_top - 2);
-
- duk_hthread_terminate(thr); /* updates thread state, minimizes its allocations */
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_TERMINATED);
-
- thr->resumer = NULL;
- resumer->state = DUK_HTHREAD_STATE_RUNNING;
- DUK_HEAP_SWITCH_THREAD(thr->heap, resumer);
-#if 0
- thr = resumer; /* not needed */
-#endif
-
- DUK_DD(DUK_DDPRINT("-> return not caught, thread terminated; handle like yield, restart execution in resumer"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- }
-
- case DUK_LJ_TYPE_BREAK:
- case DUK_LJ_TYPE_CONTINUE: {
- /*
- * Find a matching label catcher or 'finally' catcher in
- * the same function.
- *
- * A label catcher must always exist and will match unless
- * a 'finally' captures the break/continue first. It is the
- * compiler's responsibility to ensure that labels are used
- * correctly.
- */
-
- duk_catcher *cat;
- duk_size_t orig_callstack_index;
- duk_uint_t lj_label;
-
- cat = thr->catchstack + thr->catchstack_top - 1;
- orig_callstack_index = cat->callstack_index;
-
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(&thr->heap->lj.value1));
- lj_label = (duk_uint_t) DUK_TVAL_GET_NUMBER(&thr->heap->lj.value1);
-
- DUK_DDD(DUK_DDDPRINT("handling break/continue with label=%ld, callstack index=%ld",
- (long) lj_label, (long) cat->callstack_index));
-
- while (cat >= thr->catchstack) {
- if (cat->callstack_index != orig_callstack_index) {
- break;
- }
- DUK_DDD(DUK_DDDPRINT("considering catcher %ld: type=%ld label=%ld",
- (long) (cat - thr->catchstack),
- (long) DUK_CAT_GET_TYPE(cat),
- (long) DUK_CAT_GET_LABEL(cat)));
-
- if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF &&
- DUK_CAT_HAS_FINALLY_ENABLED(cat)) {
- /* finally catches */
- duk__handle_catch_or_finally(thr,
- cat - thr->catchstack,
- 1); /* is_finally */
-
- DUK_DD(DUK_DDPRINT("-> break/continue caught by a finally (in the same function), restart execution"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- }
- if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_LABEL &&
- (duk_uint_t) DUK_CAT_GET_LABEL(cat) == lj_label) {
- /* found label */
- duk__handle_label(thr,
- cat - thr->catchstack);
-
- DUK_DD(DUK_DDPRINT("-> break/continue caught by a label catcher (in the same function), restart execution"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- }
- cat--;
- }
-
- /* should never happen, but be robust */
- DUK_D(DUK_DPRINT("break/continue not caught by anything in the current function (should never happen)"));
- goto convert_to_internal_error;
- }
-
case DUK_LJ_TYPE_THROW: {
/*
* Three possible outcomes:
@@ -65312,12 +66787,12 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
}
if (DUK_CAT_HAS_CATCH_ENABLED(cat)) {
- /* try catches */
DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF);
- duk__handle_catch_or_finally(thr,
- cat - thr->catchstack,
- 0); /* is_finally */
+ duk__handle_catch(thr,
+ cat - thr->catchstack,
+ &thr->heap->lj.value1,
+ DUK_LJ_TYPE_THROW);
DUK_DD(DUK_DDPRINT("-> throw caught by a 'catch' clause, restart execution"));
retval = DUK__LONGJMP_RESTART;
@@ -65328,9 +66803,10 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF);
DUK_ASSERT(!DUK_CAT_HAS_CATCH_ENABLED(cat));
- duk__handle_catch_or_finally(thr,
- cat - thr->catchstack,
- 1); /* is_finally */
+ duk__handle_finally(thr,
+ cat - thr->catchstack,
+ &thr->heap->lj.value1,
+ DUK_LJ_TYPE_THROW);
DUK_DD(DUK_DDPRINT("-> throw caught by a 'finally' clause, restart execution"));
retval = DUK__LONGJMP_RESTART;
@@ -65355,7 +66831,7 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
/* Note: MUST NOT wipe_and_return here, as heap->lj must remain intact */
}
- DUK_DD(DUK_DDPRINT("not caught by current thread, yield error to resumer"));
+ DUK_DD(DUK_DDPRINT("-> throw not caught by current thread, yield error to resumer and recheck longjmp"));
/* not caught by current thread, thread terminates (yield error to resumer);
* note that this may cause a cascade if the resumer terminates with an uncaught
@@ -65387,11 +66863,10 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
goto check_longjmp;
}
- case DUK_LJ_TYPE_NORMAL: {
- DUK_D(DUK_DPRINT("caught DUK_LJ_TYPE_NORMAL, should never happen, treat as internal error"));
- goto convert_to_internal_error;
- }
-
+ case DUK_LJ_TYPE_BREAK: /* pseudotypes, not used in actual longjmps */
+ case DUK_LJ_TYPE_CONTINUE:
+ case DUK_LJ_TYPE_RETURN:
+ case DUK_LJ_TYPE_NORMAL:
default: {
/* should never happen, but be robust */
DUK_D(DUK_DPRINT("caught unknown longjmp type %ld, treat as internal error", (long) thr->heap->lj.type));
@@ -65407,83 +66882,249 @@ duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
thr->heap->lj.type = DUK_LJ_TYPE_UNKNOWN;
thr->heap->lj.iserror = 0;
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value1);
- DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
-
- DUK_TVAL_SET_TVAL(&tv_tmp, &thr->heap->lj.value2);
- DUK_TVAL_SET_UNDEFINED_UNUSED(&thr->heap->lj.value2);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */
just_return:
return retval;
convert_to_internal_error:
/* This could also be thrown internally (set the error, goto check_longjmp),
- * but it's better for internal errors to bubble outwards.
+ * but it's better for internal errors to bubble outwards so that we won't
+ * infinite loop in this catchpoint.
*/
DUK_ERROR(thr, DUK_ERR_INTERNAL_ERROR, DUK_STR_INTERNAL_ERROR_EXEC_LONGJMP);
DUK_UNREACHABLE();
return retval;
}
-/* XXX: Disabled for 1.0 release. This needs to handle unwinding for label
- * sites (which are created for explicit labels but also for control statements
- * like for-loops). At that point it's quite close to the "slow return" handler
- * except for longjmp(). Perhaps all returns could initially be handled as fast
- * returns and only converted to longjmp()s when basic handling won't do?
+/* Handle a BREAK/CONTINUE opcode. Avoid using longjmp() for BREAK/CONTINUE
+ * handling because it has a measurable performance impact in ordinary
+ * environments and an extreme impact in Emscripten (GH-342).
*/
-#if 0
-/* Try a fast return. Return false if fails, so that a slow return can be done
- * instead.
+DUK_LOCAL void duk__handle_break_or_continue(duk_hthread *thr,
+ duk_uint_t label_id,
+ duk_small_uint_t lj_type) {
+ duk_catcher *cat;
+ duk_size_t orig_callstack_index;
+
+ DUK_ASSERT(thr != NULL);
+
+ /*
+ * Find a matching label catcher or 'finally' catcher in
+ * the same function.
+ *
+ * A label catcher must always exist and will match unless
+ * a 'finally' captures the break/continue first. It is the
+ * compiler's responsibility to ensure that labels are used
+ * correctly.
+ */
+
+ /* Note: thr->catchstack_top may be 0, so that cat < thr->catchstack
+ * initially. This is OK and intended.
+ */
+ cat = thr->catchstack + thr->catchstack_top - 1;
+ DUK_ASSERT(thr->callstack_top > 0);
+ orig_callstack_index = thr->callstack_top - 1;
+
+ DUK_DDD(DUK_DDDPRINT("handling break/continue with label=%ld, callstack index=%ld",
+ (long) label_id, (long) cat->callstack_index));
+
+ while (cat >= thr->catchstack) {
+ if (cat->callstack_index != orig_callstack_index) {
+ break;
+ }
+ DUK_DDD(DUK_DDDPRINT("considering catcher %ld: type=%ld label=%ld",
+ (long) (cat - thr->catchstack),
+ (long) DUK_CAT_GET_TYPE(cat),
+ (long) DUK_CAT_GET_LABEL(cat)));
+
+ if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF &&
+ DUK_CAT_HAS_FINALLY_ENABLED(cat)) {
+ duk_size_t cat_idx;
+ duk_tval tv_tmp;
+
+ cat_idx = (duk_size_t) (cat - thr->catchstack); /* get before side effects */
+
+#if defined(DUK_USE_FASTINT)
+ DUK_TVAL_SET_FASTINT_U32(&tv_tmp, (duk_uint32_t) label_id);
+#else
+ DUK_TVAL_SET_NUMBER(&tv_tmp, (duk_double_t) label_id);
+#endif
+ duk__handle_finally(thr, cat_idx, &tv_tmp, lj_type);
+
+ DUK_DD(DUK_DDPRINT("-> break/continue caught by 'finally', restart execution"));
+ return;
+ }
+ if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_LABEL &&
+ (duk_uint_t) DUK_CAT_GET_LABEL(cat) == label_id) {
+ duk_size_t cat_idx;
+
+ cat_idx = (duk_size_t) (cat - thr->catchstack);
+ duk__handle_label(thr, cat_idx, lj_type);
+
+ DUK_DD(DUK_DDPRINT("-> break/continue caught by a label catcher (in the same function), restart execution"));
+ return;
+ }
+ cat--;
+ }
+
+ /* should never happen, but be robust */
+ DUK_D(DUK_DPRINT("-> break/continue not caught by anything in the current function (should never happen), throw internal error"));
+ DUK_ERROR(thr, DUK_ERR_INTERNAL_ERROR, DUK_STR_INTERNAL_ERROR);
+ return;
+}
+
+/* Handle a RETURN opcode. Avoid using longjmp() for return handling because
+ * it has a measurable performance impact in ordinary environments and an extreme
+ * impact in Emscripten (GH-342). Return value is on value stack top.
*/
-DUK_LOCAL
-duk_bool_t duk__handle_fast_return(duk_hthread *thr,
- duk_tval *tv_retval,
- duk_hthread *entry_thread,
- duk_size_t entry_callstack_top) {
- duk_tval tv_tmp;
+DUK_LOCAL duk_small_uint_t duk__handle_return(duk_hthread *thr,
+ duk_hthread *entry_thread,
+ duk_size_t entry_callstack_top) {
duk_tval *tv1;
+ duk_tval *tv2;
+ duk_hthread *resumer;
+ duk_catcher *cat;
+ duk_size_t new_cat_top;
+ duk_size_t orig_callstack_index;
- /* retval == NULL indicates 'undefined' return value */
+ /* We can directly access value stack here. */
- if (thr == entry_thread && thr->callstack_top == entry_callstack_top) {
- DUK_DDD(DUK_DDDPRINT("reject fast return: return would exit bytecode executor to caller"));
- return 0;
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(entry_thread != NULL);
+ DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom);
+ tv1 = thr->valstack_top - 1;
+ DUK_TVAL_CHKFAST_INPLACE(tv1); /* fastint downgrade check for return values */
+
+ /*
+ * Four possible outcomes:
+ *
+ * 1. A 'finally' in the same function catches the 'return'.
+ * It may continue to propagate when 'finally' is finished,
+ * or it may be neutralized by 'finally' (both handled by
+ * ENDFIN).
+ *
+ * 2. The return happens at the entry level of the bytecode
+ * executor, so return from the executor (in C stack).
+ *
+ * 3. There is a calling (Ecmascript) activation in the call
+ * stack => return to it, in the same executor instance.
+ *
+ * 4. There is no calling activation, and the thread is
+ * terminated. There is always a resumer in this case,
+ * which gets the return value similarly to a 'yield'
+ * (except that the current thread can no longer be
+ * resumed).
+ */
+
+ DUK_ASSERT(thr != NULL);
+ DUK_ASSERT(thr->callstack_top >= 1);
+ DUK_ASSERT(thr->catchstack != NULL);
+
+ /* XXX: does not work if thr->catchstack is NULL */
+ /* XXX: does not work if thr->catchstack is allocated but lowest pointer */
+
+ cat = thr->catchstack + thr->catchstack_top - 1; /* may be < thr->catchstack initially */
+ DUK_ASSERT(thr->callstack_top > 0); /* ensures callstack_top - 1 >= 0 */
+ orig_callstack_index = thr->callstack_top - 1;
+
+ while (cat >= thr->catchstack) {
+ if (cat->callstack_index != orig_callstack_index) {
+ break;
+ }
+ if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF &&
+ DUK_CAT_HAS_FINALLY_ENABLED(cat)) {
+ duk_size_t cat_idx;
+
+ cat_idx = (duk_size_t) (cat - thr->catchstack); /* get before side effects */
+
+ DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom);
+ duk__handle_finally(thr, cat_idx, thr->valstack_top - 1, DUK_LJ_TYPE_RETURN);
+
+ DUK_DD(DUK_DDPRINT("-> return caught by 'finally', restart execution"));
+ return DUK__RETHAND_RESTART;
+ }
+ cat--;
}
- if (thr->callstack_top <= 1) {
- DUK_DDD(DUK_DDDPRINT("reject fast return: there is no caller in this callstack (thread yield)"));
- return 0;
+ /* If out of catchstack, cat = thr->catchstack - 1;
+ * new_cat_top will be 0 in that case.
+ */
+ new_cat_top = (duk_size_t) ((cat + 1) - thr->catchstack);
+ cat = NULL; /* avoid referencing, invalidated */
+
+ DUK_DDD(DUK_DDDPRINT("no catcher in catch stack, return to calling activation / yield"));
+
+ if (thr == entry_thread &&
+ thr->callstack_top == entry_callstack_top) {
+ /* Return to the bytecode executor caller which will unwind stacks.
+ * Return value is already on the stack top: [ ... retval ].
+ */
+
+ DUK_DDD(DUK_DDDPRINT("-> return propagated up to entry level, exit bytecode executor"));
+ return DUK__RETHAND_FINISHED;
}
- /* There is a caller, and it must be an Ecmascript caller (otherwise
- * it would have matched the entry level check).
- */
- DUK_ASSERT(thr->callstack_top >= 2);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2))); /* must be ecmascript */
+ if (thr->callstack_top >= 2) {
+ /* There is a caller; it MUST be an Ecmascript caller (otherwise it would
+ * match entry level check)
+ */
- tv1 = thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval;
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- if (tv_retval) {
- DUK_TVAL_SET_TVAL(tv1, tv_retval);
- DUK_TVAL_INCREF(thr, tv1);
- } else {
- DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1);
- /* no need to incref */
+ DUK_DDD(DUK_DDDPRINT("return to Ecmascript caller, idx_retval=%ld, lj_value1=%!T",
+ (long) (thr->callstack + thr->callstack_top - 2)->idx_retval,
+ (duk_tval *) &thr->heap->lj.value1));
+
+ DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2))); /* must be ecmascript */
+
+ tv1 = thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval;
+ DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom);
+ tv2 = thr->valstack_top - 1;
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
+
+ DUK_DDD(DUK_DDDPRINT("return value at idx_retval=%ld is %!T",
+ (long) (thr->callstack + thr->callstack_top - 2)->idx_retval,
+ (duk_tval *) (thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval)));
+
+ duk_hthread_catchstack_unwind(thr, new_cat_top); /* leave 'cat' as top catcher (also works if catchstack exhausted) */
+ duk_hthread_callstack_unwind(thr, thr->callstack_top - 1);
+ duk__reconfig_valstack_ecma_return(thr, thr->callstack_top - 1);
+
+ DUK_DD(DUK_DDPRINT("-> return not intercepted, restart execution in caller"));
+ return DUK__RETHAND_RESTART;
}
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
- /* No catchstack to unwind. */
+ DUK_DD(DUK_DDPRINT("no calling activation, thread finishes (similar to yield)"));
+
+ DUK_ASSERT(thr->resumer != NULL);
+ DUK_ASSERT(thr->resumer->callstack_top >= 2); /* Ecmascript activation + Duktape.Thread.resume() activation */
+ DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1) != NULL &&
+ DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1)) &&
+ ((duk_hnativefunction *) DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1))->func == duk_bi_thread_resume); /* Duktape.Thread.resume() */
+ DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2) != NULL &&
+ DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2))); /* an Ecmascript function */
+ DUK_ASSERT_DISABLE((thr->resumer->callstack + thr->resumer->callstack_top - 2)->idx_retval >= 0); /* unsigned */
+ DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING);
+ DUK_ASSERT(thr->resumer->state == DUK_HTHREAD_STATE_RESUMED);
+
+ resumer = thr->resumer;
+
+ /* Share yield longjmp handler. */
+ DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom);
+ duk__handle_yield(thr, resumer, resumer->callstack_top - 2, thr->valstack_top - 1);
+
+ duk_hthread_terminate(thr); /* updates thread state, minimizes its allocations */
+ DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_TERMINATED);
+
+ thr->resumer = NULL;
+ resumer->state = DUK_HTHREAD_STATE_RUNNING;
+ DUK_HEAP_SWITCH_THREAD(thr->heap, resumer);
#if 0
- duk_hthread_catchstack_unwind(thr, (cat - thr->catchstack) + 1); /* leave 'cat' as top catcher (also works if catchstack exhausted) */
+ thr = resumer; /* not needed */
#endif
- duk_hthread_callstack_unwind(thr, thr->callstack_top - 1);
- duk__reconfig_valstack(thr, thr->callstack_top - 1, 1); /* new top, i.e. callee */
- DUK_DDD(DUK_DDDPRINT("fast return accepted"));
- return 1;
+ DUK_DD(DUK_DDPRINT("-> return not caught, thread terminated; handle like yield, restart execution in resumer"));
+ return DUK__RETHAND_RESTART;
}
-#endif
/*
* Executor interrupt handling
@@ -65544,9 +67185,6 @@ DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_
line = duk_debug_curr_line(thr);
if (act->prev_line != line) {
- DUK_DDD(DUK_DDDPRINT("PC=%ld line=%ld; line transition: %ld -> %ld",
- (long) act->pc, (long) line, (long) act->prev_line, (long) line));
-
/* Stepped? Step out is handled by callstack unwind. */
if ((thr->heap->dbg_step_type == DUK_STEP_TYPE_INTO ||
thr->heap->dbg_step_type == DUK_STEP_TYPE_OVER) &&
@@ -65560,9 +67198,16 @@ DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_
}
/* Check for breakpoints only on line transition.
- * Breakpoint is triggered when we enter or cross
- * the target line, and the previous line was within
- * the same function.
+ * Breakpoint is triggered when we enter the target
+ * line from a different line, and the previous line
+ * was within the same function.
+ *
+ * This condition is tricky: the condition used to be
+ * that transition to -or across- the breakpoint line
+ * triggered the breakpoint. This seems intuitively
+ * better because it handles breakpoints on lines with
+ * no emitted opcodes; but this leads to the issue
+ * described in: https://github.com/svaarala/duktape/issues/263.
*/
bp_active = thr->heap->dbg_breakpoints_active;
for (;;) {
@@ -65570,8 +67215,9 @@ DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_
if (bp == NULL) {
break;
}
+
DUK_ASSERT(bp->filename != NULL);
- if (act->prev_line < bp->line && line >= bp->line) {
+ if (act->prev_line != bp->line && line == bp->line) {
DUK_D(DUK_DPRINT("BREAKPOINT TRIGGERED at %!O:%ld",
(duk_heaphdr *) bp->filename, (long) bp->line));
@@ -65579,7 +67225,7 @@ DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_
}
}
} else {
- DUK_DDD(DUK_DDDPRINT("PC=%ld line=%ld", (long) act->pc, (long) line));
+ ;
}
act->prev_line = line;
@@ -65716,9 +67362,19 @@ DUK_LOCAL duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) {
/*
* Avoid nested calls. Concretely this happens during debugging, e.g.
* when we eval() an expression.
+ *
+ * Also don't interrupt if we're currently doing debug processing
+ * (which can be initiated outside the bytecode executor) as this
+ * may cause the debugger to be called recursively. Check required
+ * for correct operation of throw intercept and other "exotic" halting
+ * scenarios.
*/
+#if defined(DUK_USE_DEBUGGER_SUPPORT)
+ if (DUK_HEAP_HAS_INTERRUPT_RUNNING(thr->heap) || thr->heap->dbg_processing) {
+#else
if (DUK_HEAP_HAS_INTERRUPT_RUNNING(thr->heap)) {
+#endif
DUK_DD(DUK_DDPRINT("nested executor interrupt, ignoring"));
/* Set a high interrupt counter; the original executor
@@ -65731,8 +67387,10 @@ DUK_LOCAL duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) {
DUK_HEAP_SET_INTERRUPT_RUNNING(thr->heap);
act = thr->callstack + thr->callstack_top - 1;
+
fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION((duk_hobject *) fun));
+
DUK_UNREF(fun);
#if defined(DUK_USE_EXEC_TIMEOUT_CHECK)
@@ -65773,14 +67431,12 @@ DUK_LOCAL duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) {
ctr = 1;
}
- DUK_DDD(DUK_DDDPRINT("executor interrupt finished, cstop=%ld, pc=%ld, nextctr=%ld",
- (long) thr->callstack_top, (long) act->pc, (long) ctr));
-
/* The counter value is one less than the init value: init value should
* indicate how many instructions are executed before interrupt. To
* execute 1 instruction (after interrupt handler return), counter must
* be 0.
*/
+ DUK_ASSERT(ctr >= 1);
thr->interrupt_init = ctr;
thr->interrupt_counter = ctr - 1;
DUK_HEAP_CLEAR_INTERRUPT_RUNNING(thr->heap);
@@ -65799,7 +67455,7 @@ DUK_LOCAL duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) {
*/
#if defined(DUK_USE_DEBUGGER_SUPPORT)
-DUK_LOCAL void duk__executor_handle_debugger(duk_hthread *thr, duk_activation *act, duk_hcompiledfunction *fun) {
+DUK_LOCAL void duk__executor_recheck_debugger(duk_hthread *thr, duk_activation *act, duk_hcompiledfunction *fun) {
duk_heap *heap;
duk_tval *tv_tmp;
duk_hstring *filename;
@@ -65935,15 +67591,15 @@ DUK_LOCAL void duk__executor_handle_debugger(duk_hthread *thr, duk_activation *a
* setjmp() jmpbuf.
*
* Ecmascript function calls and coroutine resumptions are handled
- * internally without recursive C calls. Other function calls are
- * handled using duk_handle_call(), increasing C recursion depth.
- *
- * There are many other tricky control flow situations, such as:
+ * internally (by the outer executor function) without recursive C calls.
+ * Other function calls are handled using duk_handle_call(), increasing
+ * C recursion depth.
*
- * - Break and continue (fast and slow)
- * - Return (fast and slow)
- * - Error throwing
- * - Thread resume and yield
+ * Abrupt completions (= long control tranfers) are handled either
+ * directly by reconfiguring relevant stacks and restarting execution,
+ * or via a longjmp. Longjmp-free handling is preferable for performance
+ * (especially Emscripten performance), and is used for: break, continue,
+ * and return.
*
* For more detailed notes, see doc/execution.rst.
*
@@ -65951,11 +67607,19 @@ DUK_LOCAL void duk__executor_handle_debugger(duk_hthread *thr, duk_activation *a
* and volatile.
*/
-#define DUK__STRICT() (DUK_HOBJECT_HAS_STRICT(&(fun)->obj))
-#define DUK__REG(x) (thr->valstack_bottom[(x)])
-#define DUK__REGP(x) (&thr->valstack_bottom[(x)])
-#define DUK__CONST(x) (DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, fun)[(x)])
-#define DUK__CONSTP(x) (&DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, fun)[(x)])
+/* Presence of 'fun' is config based, there's a marginal performance
+ * difference and the best option is architecture dependent.
+ */
+#if defined(DUK_USE_EXEC_FUN_LOCAL)
+#define DUK__FUN() fun
+#else
+#define DUK__FUN() ((duk_hcompiledfunction *) DUK_ACT_GET_FUNC((thr)->callstack + (thr)->callstack_top - 1))
+#endif
+#define DUK__STRICT() (DUK_HOBJECT_HAS_STRICT((duk_hobject *) DUK__FUN()))
+#define DUK__REG(x) (*(thr->valstack_bottom + (x)))
+#define DUK__REGP(x) (thr->valstack_bottom + (x))
+#define DUK__CONST(x) (*(consts + (x)))
+#define DUK__CONSTP(x) (consts + (x))
#define DUK__REGCONST(x) ((x) < DUK_BC_REGLIMIT ? DUK__REG((x)) : DUK__CONST((x) - DUK_BC_REGLIMIT))
#define DUK__REGCONSTP(x) ((x) < DUK_BC_REGLIMIT ? DUK__REGP((x)) : DUK__CONSTP((x) - DUK_BC_REGLIMIT))
@@ -65969,46 +67633,29 @@ DUK_LOCAL void duk__executor_handle_debugger(duk_hthread *thr, duk_activation *a
} while (0)
#endif
-DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
- /* Entry level info. Although these are assigned to before setjmp()
- * a 'volatile' seems to be needed. Note placement of "volatile" for
- * pointers. See doc/code-issues.rst for more discussion.
- */
- duk_hthread * volatile entry_thread; /* volatile copy of exec_thr */
- volatile duk_size_t entry_callstack_top;
- volatile duk_int_t entry_call_recursion_depth;
- duk_jmpbuf * volatile entry_jmpbuf_ptr;
-
- /* "hot" variables for interpretation -- not volatile, value not guaranteed in setjmp error handling */
- duk_hthread *thr; /* stable */
- duk_activation *act; /* semi-stable (ok as long as callstack not resized) */
- duk_hcompiledfunction *fun; /* stable */
- duk_instr_t *bcode; /* stable */
- /* 'consts' is computed on-the-fly */
- /* 'funcs' is quite rarely used, so no local for it */
+#define DUK__SYNC_CURR_PC() do { \
+ duk_activation *act; \
+ act = thr->callstack + thr->callstack_top - 1; \
+ act->curr_pc = curr_pc; \
+ } while (0)
+#define DUK__SYNC_AND_NULL_CURR_PC() do { \
+ duk_activation *act; \
+ act = thr->callstack + thr->callstack_top - 1; \
+ act->curr_pc = curr_pc; \
+ thr->ptr_curr_pc = NULL; \
+ } while (0)
- /* "hot" temps for interpretation -- not volatile, value not guaranteed in setjmp error handling */
- duk_uint_fast32_t ins; /* XXX: check performance impact on x64 between fast/non-fast variant */
+/* Outer executor with setjmp/longjmp handling. */
+DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
+ /* Entry level info. */
+ duk_hthread *entry_thread;
+ duk_size_t entry_callstack_top;
+ duk_int_t entry_call_recursion_depth;
+ duk_jmpbuf *entry_jmpbuf_ptr;
- /* jmpbuf */
+ duk_heap *heap;
duk_jmpbuf jmpbuf;
-#ifdef DUK_USE_INTERRUPT_COUNTER
- duk_int_t int_ctr;
-#endif
-
-#ifdef DUK_USE_ASSERTIONS
- duk_size_t valstack_top_base; /* valstack top, should match before interpreting each op (no leftovers) */
-#endif
-
- /* XXX: document assumptions on setjmp and volatile variables
- * (see duk_handle_call()).
- */
-
- /*
- * Preliminaries
- */
-
DUK_ASSERT(exec_thr != NULL);
DUK_ASSERT(exec_thr->heap != NULL);
DUK_ASSERT(exec_thr->heap->curr_thread != NULL);
@@ -66017,143 +67664,119 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
DUK_ASSERT(DUK_ACT_GET_FUNC(exec_thr->callstack + exec_thr->callstack_top - 1) != NULL);
DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(exec_thr->callstack + exec_thr->callstack_top - 1)));
- entry_thread = exec_thr; /* volatile copy */
- thr = (duk_hthread *) entry_thread;
- entry_callstack_top = thr->callstack_top;
- entry_call_recursion_depth = thr->heap->call_recursion_depth;
- entry_jmpbuf_ptr = thr->heap->lj.jmpbuf_ptr;
+ entry_thread = exec_thr;
+ heap = entry_thread->heap;
+ entry_callstack_top = entry_thread->callstack_top;
+ entry_call_recursion_depth = entry_thread->heap->call_recursion_depth;
+ entry_jmpbuf_ptr = entry_thread->heap->lj.jmpbuf_ptr;
/*
- * Setjmp catchpoint setup.
- *
* Note: we currently assume that the setjmp() catchpoint is
* not re-entrant (longjmp() cannot be called more than once
* for a single setjmp()).
+ *
+ * See doc/code-issues.rst for notes on variable assignment
+ * before and after setjmp().
*/
- reset_setjmp_catchpoint:
+ for (;;) {
+ heap->lj.jmpbuf_ptr = &jmpbuf;
+ DUK_ASSERT(heap->lj.jmpbuf_ptr != NULL);
- DUK_ASSERT(thr != NULL);
- thr->heap->lj.jmpbuf_ptr = &jmpbuf;
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL);
+ if (DUK_SETJMP(heap->lj.jmpbuf_ptr->jb) != 0) {
+ duk_small_uint_t lj_ret;
- if (DUK_SETJMP(thr->heap->lj.jmpbuf_ptr->jb)) {
- /*
- * Note: any local variables accessed here must have their value
- * assigned *before* the setjmp() call, OR they must be declared
- * volatile. Otherwise their value is not guaranteed to be correct.
- *
- * 'thr' might seem to be a risky variable because it is changed
- * for yield and resume. However, yield and resume are handled
- * using longjmp()s.
- */
+ DUK_DDD(DUK_DDDPRINT("longjmp caught by bytecode executor"));
- duk_small_uint_t lj_ret;
+ /* Longjmp callers are required to sync-and-null thr->ptr_curr_pc
+ * before longjmp.
+ */
+ DUK_ASSERT(heap->curr_thread != NULL);
+ DUK_ASSERT(heap->curr_thread->ptr_curr_pc == NULL);
- DUK_DDD(DUK_DDDPRINT("longjmp caught by bytecode executor"));
+ /* XXX: signalling the need to shrink check (only if unwound) */
- /* Relookup 'thr': it's not volatile so its value is not
- * guaranteed. The heap->curr_thread value should always be
- * valid here because longjmp callers don't switch threads,
- * only the longjmp handler does that (even for RESUME and
- * YIELD).
- */
- DUK_ASSERT(entry_thread != NULL);
- thr = entry_thread->heap->curr_thread;
+ /* Must be restored here to handle e.g. yields properly. */
+ heap->call_recursion_depth = entry_call_recursion_depth;
- /* XXX: signalling the need to shrink check (only if unwound) */
+ /* Switch to caller's setjmp() catcher so that if an error occurs
+ * during error handling, it is always propagated outwards instead
+ * of causing an infinite loop in our own handler.
+ */
+ heap->lj.jmpbuf_ptr = (duk_jmpbuf *) entry_jmpbuf_ptr;
- /* Must be restored here to handle e.g. yields properly. */
- thr->heap->call_recursion_depth = entry_call_recursion_depth;
+ lj_ret = duk__handle_longjmp(heap->curr_thread, entry_thread, entry_callstack_top);
- /* Switch to caller's setjmp() catcher so that if an error occurs
- * during error handling, it is always propagated outwards instead
- * of causing an infinite loop in our own handler.
- */
+ if (lj_ret == DUK__LONGJMP_RESTART) {
+ /* Restart bytecode execution, possibly with a changed thread. */
+ ;
+ } else {
+ /* Rethrow error to calling state. */
+ DUK_ASSERT(lj_ret == DUK__LONGJMP_RETHROW);
- DUK_DDD(DUK_DDDPRINT("restore jmpbuf_ptr: %p -> %p",
- (void *) ((thr && thr->heap) ? thr->heap->lj.jmpbuf_ptr : NULL),
- (void *) entry_jmpbuf_ptr));
- thr->heap->lj.jmpbuf_ptr = (duk_jmpbuf *) entry_jmpbuf_ptr;
+ /* Longjmp handling has restored jmpbuf_ptr. */
+ DUK_ASSERT(heap->lj.jmpbuf_ptr == entry_jmpbuf_ptr);
- lj_ret = duk__handle_longjmp(thr, (duk_hthread *) entry_thread, (duk_size_t) entry_callstack_top);
+ /* Thread may have changed, e.g. YIELD converted to THROW. */
+ duk_err_longjmp(heap->curr_thread);
+ DUK_UNREACHABLE();
+ }
+ } else {
+ /* Execute bytecode until returned or longjmp(). */
+ duk__js_execute_bytecode_inner(entry_thread, entry_callstack_top);
- if (lj_ret == DUK__LONGJMP_RESTART) {
- /*
- * Restart bytecode execution, possibly with a changed thread.
- */
- thr = thr->heap->curr_thread;
- goto reset_setjmp_catchpoint;
- } else if (lj_ret == DUK__LONGJMP_RETHROW) {
- /*
- * Rethrow error to calling state.
- */
+ /* Successful return: restore jmpbuf and return to caller. */
+ heap->lj.jmpbuf_ptr = (duk_jmpbuf *) entry_jmpbuf_ptr;
+ return;
+ }
+ }
- /* thread may have changed (e.g. YIELD converted to THROW) */
- thr = thr->heap->curr_thread;
+ DUK_UNREACHABLE();
+}
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr == entry_jmpbuf_ptr);
+/* Inner executor, performance critical. */
+DUK_LOCAL DUK_NOINLINE void duk__js_execute_bytecode_inner(duk_hthread *entry_thread, duk_size_t entry_callstack_top) {
+ /* Current PC, accessed by other functions through thr->ptr_to_curr_pc.
+ * Critical for performance. It would be safest to make this volatile,
+ * but that eliminates performance benefits; aliasing guarantees
+ * should be enough though.
+ */
+ duk_instr_t *curr_pc; /* bytecode has a stable pointer */
- duk_err_longjmp(thr);
- DUK_UNREACHABLE();
- } else {
- /*
- * Return from bytecode executor with a return value.
- */
- DUK_ASSERT(lj_ret == DUK__LONGJMP_FINISHED);
+ /* Hot variables for interpretation. Critical for performance,
+ * but must add sparingly to minimize register shuffling.
+ */
+ duk_hthread *thr; /* stable */
+ duk_tval *consts; /* stable */
+ duk_uint_fast32_t ins;
+ /* 'funcs' is quite rarely used, so no local for it */
+#if defined(DUK_USE_EXEC_FUN_LOCAL)
+ duk_hcompiledfunction *fun;
+#else
+ /* 'fun' is quite rarely used, so no local for it */
+#endif
- /* XXX: return assertions for valstack, callstack, catchstack */
+#ifdef DUK_USE_INTERRUPT_COUNTER
+ duk_int_t int_ctr;
+#endif
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr == entry_jmpbuf_ptr);
- return;
- }
- DUK_UNREACHABLE();
- }
+#ifdef DUK_USE_ASSERTIONS
+ duk_size_t valstack_top_base; /* valstack top, should match before interpreting each op (no leftovers) */
+#endif
/*
* Restart execution by reloading thread state.
*
* Note that 'thr' and any thread configuration may have changed,
- * so all local variables are suspect.
+ * so all local variables are suspect and we need to reinitialize.
*
* The number of local variables should be kept to a minimum: if
* the variables are spilled, they will need to be loaded from
* memory anyway.
- */
-
- restart_execution:
-
- /* Lookup current thread; use the volatile 'entry_thread' for this to
- * avoid clobber warnings. (Any valid, reachable 'thr' value would be
- * fine for this, so using 'entry_thread' is just to silence warnings.)
- */
- thr = entry_thread->heap->curr_thread;
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)));
-
- /* Assume interrupt init/counter are properly initialized here. */
-
- /* assume that thr->valstack_bottom has been set-up before getting here */
- act = thr->callstack + thr->callstack_top - 1;
- fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
- DUK_ASSERT(fun != NULL);
- DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == fun->nregs);
- bcode = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, fun);
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap) && !thr->heap->dbg_processing) {
- thr->heap->dbg_processing = 1;
- duk__executor_handle_debugger(thr, act, fun);
- thr->heap->dbg_processing = 0;
- }
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-
- /* XXX: shrink check flag? */
-
- /*
- * Bytecode interpreter.
+ *
+ * Any 'goto restart_execution;' code path in opcode dispatch must
+ * ensure 'curr_pc' is synced back to act->curr_pc before the goto
+ * takes place.
*
* The interpreter must be very careful with memory pointers, as
* many pointers are not guaranteed to be 'stable' and may be
@@ -66171,43 +67794,83 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
* is not changed (reallocated by growing or shrinking), or
* by any garbage collection invocation (through finalizers)
* - Note in particular that ANY DECREF can invalidate the
- * activation pointer
+ * activation pointer, so for the most part a fresh lookup
+ * is required
*
* The following are not assumed to have stable pointers at all:
* - the value stack (registers) of the current thread
* - the catch stack of the current thread
*
- * See execution.txt for discussion.
+ * See execution.rst for discussion.
*/
+ restart_execution:
+
+ /* Lookup current thread; use the stable 'entry_thread' for this to
+ * avoid clobber warnings. Any valid, reachable 'thr' value would be
+ * fine for this, so using 'entry_thread' is just to silence warnings.
+ */
+ thr = entry_thread->heap->curr_thread;
DUK_ASSERT(thr != NULL);
- DUK_ASSERT(act != NULL);
- DUK_ASSERT(fun != NULL);
- DUK_ASSERT(bcode != NULL);
+ DUK_ASSERT(thr->callstack_top >= 1);
+ DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL);
+ DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)));
+
+ thr->ptr_curr_pc = &curr_pc;
+
+ /* Relookup and initialize dispatch loop variables. Debugger check. */
+ {
+ duk_activation *act;
+#if !defined(DUK_USE_EXEC_FUN_LOCAL)
+ duk_hcompiledfunction *fun;
+#endif
+
+ /* Assume interrupt init/counter are properly initialized here. */
+ /* Assume that thr->valstack_bottom has been set-up before getting here. */
+
+ act = thr->callstack + thr->callstack_top - 1;
+ fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
+ DUK_ASSERT(fun != NULL);
+ DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == fun->nregs);
+ consts = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, fun);
+ DUK_ASSERT(consts != NULL);
+
+#if defined(DUK_USE_DEBUGGER_SUPPORT)
+ if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap) && !thr->heap->dbg_processing) {
+ thr->heap->dbg_processing = 1;
+ duk__executor_recheck_debugger(thr, act, fun);
+ act = thr->callstack + thr->callstack_top - 1; /* relookup after side effects */
+ thr->heap->dbg_processing = 0;
+ }
+#endif /* DUK_USE_DEBUGGER_SUPPORT */
+
+#ifdef DUK_USE_ASSERTIONS
+ valstack_top_base = (duk_size_t) (thr->valstack_top - thr->valstack);
+#endif
+
+ /* Set up curr_pc for opcode dispatch. */
+ curr_pc = act->curr_pc;
+ }
- DUK_DD(DUK_DDPRINT("restarting execution, thr %p, act %p (idx %ld), fun %p, bcode %p, "
+ DUK_DD(DUK_DDPRINT("restarting execution, thr %p, act idx %ld, fun %p,"
"consts %p, funcs %p, lev %ld, regbot %ld, regtop %ld, catchstack_top=%ld, "
"preventcount=%ld",
(void *) thr,
- (void *) act,
(long) (thr->callstack_top - 1),
- (void *) fun,
- (void *) bcode,
- (void *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, fun),
- (void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, fun),
+ (void *) DUK__FUN(),
+ (void *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, DUK__FUN()),
+ (void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, DUK__FUN()),
(long) (thr->callstack_top - 1),
(long) (thr->valstack_bottom - thr->valstack),
(long) (thr->valstack_top - thr->valstack),
(long) thr->catchstack_top,
(long) thr->callstack_preventcount));
-#ifdef DUK_USE_ASSERTIONS
- valstack_top_base = (duk_size_t) (thr->valstack_top - thr->valstack);
-#endif
+ /* Dispatch loop. */
for (;;) {
DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == fun->nregs);
+ DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == DUK__FUN()->nregs);
DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack) == valstack_top_base);
/* Executor interrupt counter check, used to implement breakpoints,
@@ -66216,7 +67879,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
* as fast as possible. The counter is copied back to the heap struct
* whenever a thread switch occurs by the DUK_HEAP_SWITCH_THREAD() macro.
*/
-#ifdef DUK_USE_INTERRUPT_COUNTER
+#if defined(DUK_USE_INTERRUPT_COUNTER)
int_ctr = thr->interrupt_counter;
if (DUK_LIKELY(int_ctr > 0)) {
thr->interrupt_counter = int_ctr - 1;
@@ -66224,59 +67887,76 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
/* Trigger at zero or below */
duk_small_uint_t exec_int_ret;
+ /* Write curr_pc back for the debugger. */
+ DUK_ASSERT(thr->callstack_top > 0);
+ {
+ duk_activation *act;
+ act = thr->callstack + thr->callstack_top - 1;
+ act->curr_pc = (duk_instr_t *) curr_pc;
+ }
+
+ /* Force restart caused by a function return; must recheck
+ * debugger breakpoints before checking line transitions,
+ * see GH-303. Restart and then handle interrupt_counter
+ * zero again.
+ */
+#if defined(DUK_USE_DEBUGGER_SUPPORT)
+ if (thr->heap->dbg_force_restart) {
+ DUK_DD(DUK_DDPRINT("dbg_force_restart flag forced restart execution")); /* GH-303 */
+ thr->heap->dbg_force_restart = 0;
+ goto restart_execution;
+ }
+#endif
+
exec_int_ret = duk__executor_interrupt(thr);
if (exec_int_ret == DUK__INT_RESTART) {
+ /* curr_pc synced back above */
goto restart_execution;
}
}
-#endif
+#endif /* DUK_USE_INTERRUPT_COUNTER */
#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG)
+ /* For cross-checking during development: ensure dispatch count
+ * matches cumulative interrupt counter init value sums.
+ */
thr->heap->inst_count_exec++;
#endif
- /* Because ANY DECREF potentially invalidates 'act' now (through
- * finalization), we need to re-lookup 'act' in almost every case.
- *
- * XXX: future work for performance optimization:
- * This is not nice; it would be nice if the program counter was a
- * behind a stable pointer. For instance, put a raw bytecode pointer
- * into duk_hthread struct (not into the callstack); since bytecode
- * has a stable pointer this would work nicely. Whenever a call is
- * made, the bytecode pointer could be backed up as an integer index
- * to the calling activation. Perhaps add a macro for setting up a
- * new activation (same as for setting up / switching threads)?
- */
+#if defined(DUK_USE_ASSERTIONS) || defined(DUK_USE_DEBUG)
+ {
+ duk_activation *act;
+ act = thr->callstack + thr->callstack_top - 1;
+ DUK_ASSERT(curr_pc >= DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, DUK__FUN()));
+ DUK_ASSERT(curr_pc < DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, DUK__FUN()));
+ DUK_UNREF(act); /* if debugging disabled */
- act = thr->callstack + thr->callstack_top - 1;
- DUK_ASSERT(bcode + act->pc >= DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, fun));
- DUK_ASSERT(bcode + act->pc < DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, fun));
-
- DUK_DDD(DUK_DDDPRINT("executing bytecode: pc=%ld ins=0x%08lx, op=%ld, valstack_top=%ld/%ld, nregs=%ld --> %!I",
- (long) act->pc,
- (unsigned long) bcode[act->pc],
- (long) DUK_DEC_OP(bcode[act->pc]),
- (long) (thr->valstack_top - thr->valstack),
- (long) (thr->valstack_end - thr->valstack),
- (long) (fun ? fun->nregs : -1),
- (duk_instr_t) bcode[act->pc]));
+ DUK_DDD(DUK_DDDPRINT("executing bytecode: pc=%ld, ins=0x%08lx, op=%ld, valstack_top=%ld/%ld, nregs=%ld --> %!I",
+ (long) (curr_pc - DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, DUK__FUN())),
+ (unsigned long) *curr_pc,
+ (long) DUK_DEC_OP(*curr_pc),
+ (long) (thr->valstack_top - thr->valstack),
+ (long) (thr->valstack_end - thr->valstack),
+ (long) (DUK__FUN() ? DUK__FUN()->nregs : -1),
+ (duk_instr_t) *curr_pc));
+ }
+#endif
#if defined(DUK_USE_ASSERTIONS)
- /* Quite heavy assert: check that valstack is in correctly
- * initialized state. Improper shuffle instructions can
- * write beyond valstack_end so this check catches them in
- * the act.
+ /* Quite heavy assert: check valstack policy. Improper
+ * shuffle instructions can write beyond valstack_top/end
+ * so this check catches them in the act.
*/
{
duk_tval *tv;
tv = thr->valstack_top;
while (tv != thr->valstack_end) {
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED_UNUSED(tv));
+ DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv));
tv++;
}
}
#endif
- ins = bcode[act->pc++];
+ ins = *curr_pc++;
/* Typing: use duk_small_(u)int_fast_t when decoding small
* opcode fields (op, A, B, C) and duk_(u)int_fast_t when
@@ -66300,52 +67980,39 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
case DUK_OP_LDREG: {
duk_small_uint_fast_t a;
duk_uint_fast_t bc;
- duk_tval tv_tmp;
duk_tval *tv1, *tv2;
a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
bc = DUK_DEC_BC(ins); tv2 = DUK__REGP(bc);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, tv2);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */
break;
}
case DUK_OP_STREG: {
duk_small_uint_fast_t a;
duk_uint_fast_t bc;
- duk_tval tv_tmp;
duk_tval *tv1, *tv2;
a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
bc = DUK_DEC_BC(ins); tv2 = DUK__REGP(bc);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv2);
- DUK_TVAL_SET_TVAL(tv2, tv1);
- DUK_TVAL_INCREF(thr, tv2);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv2, tv1); /* side effects */
break;
}
case DUK_OP_LDCONST: {
duk_small_uint_fast_t a;
duk_uint_fast_t bc;
- duk_tval tv_tmp;
duk_tval *tv1, *tv2;
a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
bc = DUK_DEC_BC(ins); tv2 = DUK__CONSTP(bc);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, tv2);
- DUK_TVAL_INCREF(thr, tv2); /* may be e.g. string */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */
break;
}
case DUK_OP_LDINT: {
duk_small_uint_fast_t a;
duk_int_fast_t bc;
- duk_tval tv_tmp;
duk_tval *tv1;
#if defined(DUK_USE_FASTINT)
duk_int32_t val;
@@ -66356,15 +68023,11 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
#if defined(DUK_USE_FASTINT)
a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
bc = DUK_DEC_BC(ins); val = (duk_int32_t) (bc - DUK_BC_LDINT_BIAS);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_FASTINT_I32(tv1, val);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_FASTINT_I32_UPDREF(thr, tv1, val); /* side effects */
#else
a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
bc = DUK_DEC_BC(ins); val = (duk_double_t) (bc - DUK_BC_LDINT_BIAS);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_NUMBER(tv1, val);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv1, val); /* side effects */
#endif
break;
}
@@ -66535,11 +68198,15 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
* C -> num args (N)
*/
- /* Note: duk_new() will call the constuctor using duk_handle_call().
+ /* duk_new() will call the constuctor using duk_handle_call().
* A constructor call prevents a yield from inside the constructor,
* even if the constructor is an Ecmascript function.
*/
+ /* Don't need to sync curr_pc here; duk_new() will do that
+ * when it augments the created error.
+ */
+
/* XXX: unnecessary copying of values? Just set 'top' to
* b + c, and let the return handling fix up the stack frame?
*/
@@ -66567,6 +68234,11 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
duk_new(ctx, (duk_idx_t) c); /* [... constructor arg1 ... argN] -> [retval] */
DUK_DDD(DUK_DDDPRINT("NEW -> %!iT", (duk_tval *) duk_get_tval(ctx, -1)));
duk_replace(ctx, (duk_idx_t) idx);
+
+ /* When debugger is enabled, we need to recheck the activation
+ * status after returning. This is now handled by call handling
+ * and heap->dbg_force_restart.
+ */
break;
}
@@ -66644,6 +68316,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
case DUK_OP_GETVAR: {
duk_context *ctx = (duk_context *) thr;
+ duk_activation *act;
duk_small_uint_fast_t a = DUK_DEC_A(ins);
duk_uint_fast_t bc = DUK_DEC_BC(ins);
duk_tval *tv1;
@@ -66654,6 +68327,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
name = DUK_TVAL_GET_STRING(tv1);
DUK_ASSERT(name != NULL);
DUK_DDD(DUK_DDDPRINT("GETVAR: '%!O'", (duk_heaphdr *) name));
+ act = thr->callstack + thr->callstack_top - 1;
(void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */
duk_pop(ctx); /* 'this' binding is not needed here */
@@ -66662,6 +68336,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
}
case DUK_OP_PUTVAR: {
+ duk_activation *act;
duk_small_uint_fast_t a = DUK_DEC_A(ins);
duk_uint_fast_t bc = DUK_DEC_BC(ins);
duk_tval *tv1;
@@ -66677,11 +68352,13 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
*/
tv1 = DUK__REGP(a); /* val */
+ act = thr->callstack + thr->callstack_top - 1;
duk_js_putvar_activation(thr, act, name, tv1, DUK__STRICT());
break;
}
case DUK_OP_DECLVAR: {
+ duk_activation *act;
duk_context *ctx = (duk_context *) thr;
duk_small_uint_fast_t a = DUK_DEC_A(ins);
duk_small_uint_fast_t b = DUK_DEC_B(ins);
@@ -66716,6 +68393,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
}
tv1 = duk_get_tval(ctx, -1);
+ act = thr->callstack + thr->callstack_top - 1;
if (duk_js_declvar_activation(thr, act, name, tv1, prop_flags, is_func_decl)) {
/* already declared, must update binding value */
tv1 = duk_get_tval(ctx, -1);
@@ -66727,6 +68405,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
}
case DUK_OP_DELVAR: {
+ duk_activation *act;
duk_context *ctx = (duk_context *) thr;
duk_small_uint_fast_t a = DUK_DEC_A(ins);
duk_small_uint_fast_t b = DUK_DEC_B(ins);
@@ -66739,6 +68418,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
name = DUK_TVAL_GET_STRING(tv1);
DUK_ASSERT(name != NULL);
DUK_DDD(DUK_DDDPRINT("DELVAR '%!O'", (duk_heaphdr *) name));
+ act = thr->callstack + thr->callstack_top - 1;
rc = duk_js_delvar_activation(thr, act, name);
duk_push_boolean(ctx, rc);
@@ -66758,6 +68438,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
*/
duk_context *ctx = (duk_context *) thr;
+ duk_activation *act;
duk_small_uint_fast_t b = DUK_DEC_B(ins);
duk_uint_fast_t idx;
duk_tval *tv1;
@@ -66767,6 +68448,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
DUK_ASSERT(DUK_TVAL_IS_STRING(tv1));
name = DUK_TVAL_GET_STRING(tv1);
DUK_ASSERT(name != NULL);
+ act = thr->callstack + thr->callstack_top - 1;
(void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */
/* Note: target registers a and a+1 may overlap with DUK__REGCONSTP(b)
@@ -66795,6 +68477,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
case DUK_OP_CLOSURE: {
duk_context *ctx = (duk_context *) thr;
+ duk_activation *act;
+ duk_hcompiledfunction *fun;
duk_small_uint_fast_t a = DUK_DEC_A(ins);
duk_uint_fast_t bc = DUK_DEC_BC(ins);
duk_hobject *fun_temp;
@@ -66804,10 +68488,13 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
*/
DUK_DDD(DUK_DDDPRINT("CLOSURE to target register %ld, fnum %ld (count %ld)",
- (long) a, (long) bc, (long) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, fun)));
+ (long) a, (long) bc, (long) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, DUK__FUN())));
DUK_ASSERT_DISABLE(bc >= 0); /* unsigned */
- DUK_ASSERT((duk_uint_t) bc < (duk_uint_t) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, fun));
+ DUK_ASSERT((duk_uint_t) bc < (duk_uint_t) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, DUK__FUN()));
+
+ act = thr->callstack + thr->callstack_top - 1;
+ fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
fun_temp = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, fun)[bc];
DUK_ASSERT(fun_temp != NULL);
DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(fun_temp));
@@ -67142,7 +68829,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
tmp = duk_js_toboolean(DUK__REGCONSTP(b));
if (tmp == (duk_bool_t) a) {
/* if boolean matches A, skip next inst */
- act->pc++;
+ curr_pc++;
} else {
;
}
@@ -67152,7 +68839,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
case DUK_OP_JUMP: {
duk_int_fast_t abc = DUK_DEC_ABC(ins);
- act->pc += abc - DUK_BC_JUMP_BIAS;
+ curr_pc += abc - DUK_BC_JUMP_BIAS;
break;
}
@@ -67161,60 +68848,35 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
duk_small_uint_fast_t a = DUK_DEC_A(ins);
duk_small_uint_fast_t b = DUK_DEC_B(ins);
/* duk_small_uint_fast_t c = DUK_DEC_C(ins); */
- duk_tval *tv_val;
+ duk_small_uint_t ret_result;
/* A -> flags
* B -> return value reg/const
* C -> currently unused
*/
- /* A fast return avoids full longjmp handling for a set of
- * scenarios which hopefully represents the common cases.
- * The compiler is responsible for emitting fast returns
- * only when they are safe. Currently this means that there
- * is nothing on the catch stack (not even label catchers).
- * The speed advantage of fast returns (avoiding longjmp) is
- * not very high, around 10-15%.
- */
-#if 0 /* XXX: Disabled for 1.0 release */
- if (a & DUK_BC_RETURN_FLAG_FAST) {
- DUK_DDD(DUK_DDDPRINT("FASTRETURN attempt a=%ld b=%ld", (long) a, (long) b));
-
- if (duk__handle_fast_return(thr,
- (a & DUK_BC_RETURN_FLAG_HAVE_RETVAL) ? DUK__REGCONSTP(b) : NULL,
- entry_thread,
- entry_callstack_top)) {
- DUK_DDD(DUK_DDDPRINT("FASTRETURN success a=%ld b=%ld", (long) a, (long) b));
- goto restart_execution;
- }
- }
-#endif
+ DUK__SYNC_AND_NULL_CURR_PC();
- /* No fast return, slow path. */
- DUK_DDD(DUK_DDDPRINT("SLOWRETURN a=%ld b=%ld", (long) a, (long) b));
+ /* duk__handle_return() is guaranteed never to throw, except
+ * for potential out-of-memory situations which will then
+ * propagate out of the executor longjmp handler.
+ */
if (a & DUK_BC_RETURN_FLAG_HAVE_RETVAL) {
- tv_val = DUK__REGCONSTP(b);
-#if defined(DUK_USE_FASTINT)
- /* Explicit check for fastint downgrade. Do
- * it also for consts for now, which is odd
- * but harmless.
- */
- /* XXX: restrict to reg values only? */
-
- DUK_TVAL_CHKFAST_INPLACE(tv_val);
-#endif
- duk_push_tval(ctx, tv_val);
+ duk_push_tval(ctx, DUK__REGCONSTP(b));
} else {
duk_push_undefined(ctx);
}
+ ret_result = duk__handle_return(thr,
+ entry_thread,
+ entry_callstack_top);
+ if (ret_result == DUK__RETHAND_RESTART) {
+ goto restart_execution;
+ }
+ DUK_ASSERT(ret_result == DUK__RETHAND_FINISHED);
- duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_RETURN);
-
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* in bytecode executor, should always be set */
- duk_err_longjmp(thr);
- DUK_UNREACHABLE();
- break;
+ DUK_DDD(DUK_DDDPRINT("exiting executor after RETURN handling"));
+ return;
}
case DUK_OP_CALL:
@@ -67230,6 +68892,9 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
duk_hobject *obj_func;
duk_bool_t setup_rc;
duk_idx_t num_stack_args;
+#if !defined(DUK_USE_EXEC_FUN_LOCAL)
+ duk_hcompiledfunction *fun;
+#endif
/* A -> flags
* B -> base register for call (base -> func, base+1 -> this, base+2 -> arg1 ... base+2+N-1 -> argN)
@@ -67280,8 +68945,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
call_flags = 0;
if (flag_tailcall) {
- /* We request a tailcall, but in some corner cases
- * call handling can decide that a tailcall is
+ /* We request a tail call, but in some corner cases
+ * call handling can decide that a tail call is
* actually not possible.
* See: test-bug-tailcall-preventyield-assert.c.
*/
@@ -67298,12 +68963,14 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
call_flags);
if (setup_rc) {
- /* Ecma-to-ecma call possible, may or may not be a tailcall.
+ /* Ecma-to-ecma call possible, may or may not be a tail call.
* Avoid C recursion by being clever.
*/
DUK_DDD(DUK_DDDPRINT("ecma-to-ecma call setup possible, restart execution"));
+ /* curr_pc synced by duk_handle_ecma_call_setup() */
goto restart_execution;
}
+ DUK_ASSERT(thr->ptr_curr_pc != NULL); /* restored if ecma-to-ecma setup fails */
DUK_DDD(DUK_DDDPRINT("ecma-to-ecma call not possible, target is native (may be lightfunc)"));
@@ -67313,6 +68980,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
tv_func = DUK__REGP(idx); /* Relookup if relocated */
if (DUK_TVAL_IS_LIGHTFUNC(tv_func)) {
+
call_flags = 0; /* not protected, respect reclimit, not constructor */
/* There is no eval() special handling here: eval() is never
@@ -67327,6 +68995,9 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
/* duk_js_call.c is required to restore the stack reserve
* so we only need to reset the top.
*/
+#if !defined(DUK_USE_EXEC_FUN_LOCAL)
+ fun = DUK__FUN();
+#endif
duk_set_top(ctx, (duk_idx_t) fun->nregs);
/* No need to reinit setjmp() catchpoint, as call handling
@@ -67342,9 +69013,9 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
/*
* Other cases, use C recursion.
*
- * If a tailcall was requested we ignore it and execute a normal call.
+ * If a tail call was requested we ignore it and execute a normal call.
* Since Duktape 0.11.0 the compiler emits a RETURN opcode even after
- * a tailcall to avoid test-bug-tailcall-thread-yield-resume.js.
+ * a tail call to avoid test-bug-tailcall-thread-yield-resume.js.
*
* Direct eval call: (1) call target (before following bound function
* chain) is the built-in eval() function, and (2) call was made with
@@ -67370,6 +69041,9 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
/* duk_js_call.c is required to restore the stack reserve
* so we only need to reset the top.
*/
+#if !defined(DUK_USE_EXEC_FUN_LOCAL)
+ fun = DUK__FUN();
+#endif
duk_set_top(ctx, (duk_idx_t) fun->nregs);
/* No need to reinit setjmp() catchpoint, as call handling
@@ -67377,17 +69051,16 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
*/
}
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
/* When debugger is enabled, we need to recheck the activation
- * status after returning.
+ * status after returning. This is now handled by call handling
+ * and heap->dbg_force_restart.
*/
- goto restart_execution;
-#endif
break;
}
case DUK_OP_TRYCATCH: {
duk_context *ctx = (duk_context *) thr;
+ duk_activation *act;
duk_catcher *cat;
duk_tval *tv1;
duk_small_uint_fast_t a;
@@ -67434,6 +69107,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
a = DUK_DEC_A(ins);
bc = DUK_DEC_BC(ins);
+ act = thr->callstack + thr->callstack_top - 1;
DUK_ASSERT(thr->callstack_top >= 1);
/* 'with' target must be created first, in case we run out of memory */
@@ -67515,7 +69189,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
DUK_ASSERT(new_env != NULL);
act = thr->callstack + thr->callstack_top - 1; /* relookup (side effects) */
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, new_env, act->lex_env);
+ DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, new_env, act->lex_env); /* side effects */
act = thr->callstack + thr->callstack_top - 1; /* relookup (side effects) */
act->lex_env = new_env;
@@ -67525,9 +69199,24 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
;
}
+ /* Registers 'bc' and 'bc + 1' are written in longjmp handling
+ * and if their previous values (which are temporaries) become
+ * unreachable -and- have a finalizer, there'll be a function
+ * call during error handling which is not supported now (GH-287).
+ * Ensure that both 'bc' and 'bc + 1' have primitive values to
+ * guarantee no finalizer calls in error handling. Scrubbing also
+ * ensures finalizers for the previous values run here rather than
+ * later. Error handling related values are also written to 'bc'
+ * and 'bc + 1' but those values never become unreachable during
+ * error handling, so there's no side effect problem even if the
+ * error value has a finalizer.
+ */
+ duk_to_undefined(ctx, bc);
+ duk_to_undefined(ctx, bc + 1);
+
cat = thr->catchstack + thr->catchstack_top - 1; /* relookup (side effects) */
cat->callstack_index = thr->callstack_top - 1;
- cat->pc_base = act->pc; /* pre-incremented, points to first jump slot */
+ cat->pc_base = (duk_instr_t *) curr_pc; /* pre-incremented, points to first jump slot */
cat->idx_base = (duk_size_t) (thr->valstack_bottom - thr->valstack) + bc;
DUK_DDD(DUK_DDDPRINT("TRYCATCH catcher: flags=0x%08lx, callstack_index=%ld, pc_base=%ld, "
@@ -67535,7 +69224,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
(unsigned long) cat->flags, (long) cat->callstack_index,
(long) cat->pc_base, (long) cat->idx_base, (duk_heaphdr *) cat->h_varname));
- act->pc += 2; /* skip jump slots */
+ curr_pc += 2; /* skip jump slots */
break;
}
@@ -67548,7 +69237,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
duk_small_uint_fast_t a = DUK_DEC_A(ins);
duk_uint_fast_t bc = DUK_DEC_BC(ins);
duk_tval *tv1, *tv2;
- duk_tval tv_tmp;
duk_double_t x, y, z;
/* Two lowest bits of opcode are used to distinguish
@@ -67579,10 +69267,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
DUK_TVAL_SET_FASTINT(tv1, y_fi); /* no need for refcount update */
tv2 = DUK__REGP(a);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv2);
z_fi = (ins & DUK_ENC_OP(0x02)) ? x_fi : y_fi;
- DUK_TVAL_SET_FASTINT(tv2, z_fi); /* no need for incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_FASTINT_UPDREF(thr, tv2, z_fi); /* side effects */
break;
}
skip_fastint:
@@ -67614,10 +69300,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
}
tv2 = DUK__REGP(a);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv2);
z = (ins & DUK_ENC_OP(0x02)) ? x : y;
- DUK_TVAL_SET_NUMBER(tv2, z); /* no need for incref */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv2, z); /* side effects */
break;
}
@@ -67627,6 +69311,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
case DUK_OP_POSTINCV:
case DUK_OP_POSTDECV: {
duk_context *ctx = (duk_context *) thr;
+ duk_activation *act;
duk_small_uint_fast_t a = DUK_DEC_A(ins);
duk_uint_fast_t bc = DUK_DEC_BC(ins);
duk_double_t x, y;
@@ -67645,6 +69330,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
DUK_ASSERT(DUK_TVAL_IS_STRING(tv1));
name = DUK_TVAL_GET_STRING(tv1);
DUK_ASSERT(name != NULL);
+ act = thr->callstack + thr->callstack_top - 1;
(void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */
/* XXX: fastint fast path would be very useful here */
@@ -67747,7 +69433,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
case DUK_EXTRAOP_LDTHIS: {
/* Note: 'this' may be bound to any value, not just an object */
duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval tv_tmp;
duk_tval *tv1, *tv2;
tv1 = DUK__REGP(bc);
@@ -67756,48 +69441,36 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
DUK_DDD(DUK_DDDPRINT("LDTHIS: %!T to r%ld", (duk_tval *) tv2, (long) bc));
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, tv2);
- DUK_TVAL_INCREF(thr, tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */
break;
}
case DUK_EXTRAOP_LDUNDEF: {
duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval tv_tmp;
duk_tval *tv1;
tv1 = DUK__REGP(bc);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */
break;
}
case DUK_EXTRAOP_LDNULL: {
duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval tv_tmp;
duk_tval *tv1;
tv1 = DUK__REGP(bc);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_NULL(tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_NULL_UPDREF(thr, tv1); /* side effects */
break;
}
case DUK_EXTRAOP_LDTRUE:
case DUK_EXTRAOP_LDFALSE: {
duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval tv_tmp;
duk_tval *tv1;
duk_small_uint_fast_t bval = (extraop == DUK_EXTRAOP_LDTRUE ? 1 : 0);
tv1 = DUK__REGP(bc);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_BOOLEAN(tv1, bval);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv1, bval); /* side effects */
break;
}
@@ -67849,6 +69522,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
case DUK_EXTRAOP_TYPEOFID: {
duk_context *ctx = (duk_context *) thr;
+ duk_activation *act;
duk_small_uint_fast_t b = DUK_DEC_B(ins);
duk_small_uint_fast_t c = DUK_DEC_C(ins);
duk_hstring *name;
@@ -67861,6 +69535,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
tv = DUK__REGCONSTP(c); /* XXX: this could be a DUK__CONSTP instead */
DUK_ASSERT(DUK_TVAL_IS_STRING(tv));
name = DUK_TVAL_GET_STRING(tv);
+ act = thr->callstack + thr->callstack_top - 1;
if (duk_js_getvar_activation(thr, act, name, 0 /*throw*/)) {
/* -> [... val this] */
tv = duk_get_tval(ctx, -2);
@@ -67931,7 +69606,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
/* [ ... enum ] -> [ ... next_key ] */
DUK_DDD(DUK_DDDPRINT("enum active, next key is %!T, skip jump slot ",
(duk_tval *) duk_get_tval(ctx, -1)));
- act->pc++;;
+ curr_pc++;
} else {
/* [ ... enum ] -> [ ... ] */
DUK_DDD(DUK_DDDPRINT("enum finished, execute jump slot"));
@@ -68015,7 +69690,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
case DUK_EXTRAOP_ENDTRY: {
duk_catcher *cat;
- duk_tval tv_tmp;
duk_tval *tv1;
DUK_ASSERT(thr->catchstack_top >= 1);
@@ -68032,16 +69706,16 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
tv1 = thr->valstack + cat->idx_base;
DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */
tv1 = NULL;
tv1 = thr->valstack + cat->idx_base + 1;
DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_NUMBER(tv1, (duk_double_t) DUK_LJ_TYPE_NORMAL); /* XXX: set int */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+#if defined(DUK_USE_FASTINT)
+ DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv1, (duk_uint32_t) DUK_LJ_TYPE_NORMAL); /* side effects */
+#else
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv1, (duk_double_t) DUK_LJ_TYPE_NORMAL); /* side effects */
+#endif
tv1 = NULL;
DUK_CAT_CLEAR_FINALLY_ENABLED(cat);
@@ -68051,13 +69725,13 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
/* no need to unwind callstack */
}
- act->pc = cat->pc_base + 1;
+ curr_pc = cat->pc_base + 1;
break;
}
case DUK_EXTRAOP_ENDCATCH: {
+ duk_activation *act;
duk_catcher *cat;
- duk_tval tv_tmp;
duk_tval *tv1;
DUK_ASSERT(thr->catchstack_top >= 1);
@@ -68067,6 +69741,8 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
cat = thr->catchstack + thr->catchstack_top - 1;
DUK_ASSERT(!DUK_CAT_HAS_CATCH_ENABLED(cat)); /* cleared before entering catch part */
+ act = thr->callstack + thr->callstack_top - 1;
+
if (DUK_CAT_HAS_LEXENV_ACTIVE(cat)) {
duk_hobject *prev_env;
@@ -68088,16 +69764,16 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
tv1 = thr->valstack + cat->idx_base;
DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_UNDEFINED_ACTUAL(tv1);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */
tv1 = NULL;
tv1 = thr->valstack + cat->idx_base + 1;
DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_NUMBER(tv1, (duk_double_t) DUK_LJ_TYPE_NORMAL); /* XXX: set int */
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
+#if defined(DUK_USE_FASTINT)
+ DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv1, (duk_uint32_t) DUK_LJ_TYPE_NORMAL); /* side effects */
+#else
+ DUK_TVAL_SET_NUMBER_UPDREF(thr, tv1, (duk_double_t) DUK_LJ_TYPE_NORMAL); /* side effects */
+#endif
tv1 = NULL;
DUK_CAT_CLEAR_FINALLY_ENABLED(cat);
@@ -68107,7 +69783,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
/* no need to unwind callstack */
}
- act->pc = cat->pc_base + 1;
+ curr_pc = cat->pc_base + 1;
break;
}
@@ -68115,7 +69791,11 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
duk_context *ctx = (duk_context *) thr;
duk_catcher *cat;
duk_tval *tv1;
- duk_small_uint_fast_t cont_type;
+ duk_small_uint_t cont_type;
+ duk_small_uint_t ret_result;
+
+ /* Sync and NULL early. */
+ DUK__SYNC_AND_NULL_CURR_PC();
DUK_ASSERT(thr->catchstack_top >= 1);
DUK_ASSERT(thr->callstack_top >= 1);
@@ -68136,29 +69816,84 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
tv1 = thr->valstack + cat->idx_base + 1; /* type */
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1));
- cont_type = (duk_small_uint_fast_t) DUK_TVAL_GET_NUMBER(tv1);
+ cont_type = (duk_small_uint_t) DUK_TVAL_GET_NUMBER(tv1);
- if (cont_type == DUK_LJ_TYPE_NORMAL) {
+ switch (cont_type) {
+ case DUK_LJ_TYPE_NORMAL: {
DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with 'normal' (non-abrupt) completion -> "
"dismantle catcher, resume execution after ENDFIN"));
duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1);
/* no need to unwind callstack */
- } else {
+ goto restart_execution;
+ }
+ case DUK_LJ_TYPE_RETURN: {
+ DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with 'return' complation -> dismantle "
+ "catcher, handle return, lj.value1=%!T", thr->valstack + cat->idx_base));
+
+ /* Not necessary to unwind catchstack: return handling will
+ * do it. The finally flag of 'cat' is no longer set. The
+ * catch flag may be set, but it's not checked by return handling.
+ */
+ DUK_ASSERT(!DUK_CAT_HAS_FINALLY_ENABLED(cat)); /* cleared before entering finally */
+#if 0
+ duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1);
+#endif
+
+ duk_push_tval(ctx, thr->valstack + cat->idx_base);
+ ret_result = duk__handle_return(thr,
+ entry_thread,
+ entry_callstack_top);
+ if (ret_result == DUK__RETHAND_RESTART) {
+ goto restart_execution;
+ }
+ DUK_ASSERT(ret_result == DUK__RETHAND_FINISHED);
+
+ DUK_DDD(DUK_DDDPRINT("exiting executor after ENDFIN and RETURN (pseudo) longjmp type"));
+ return;
+ }
+ case DUK_LJ_TYPE_BREAK:
+ case DUK_LJ_TYPE_CONTINUE: {
+ duk_uint_t label_id;
+ duk_small_uint_t lj_type;
+
+ /* Not necessary to unwind catchstack: break/continue
+ * handling will do it. The finally flag of 'cat' is
+ * no longer set. The catch flag may be set, but it's
+ * not checked by break/continue handling.
+ */
+#if 0
+ duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1);
+#endif
+
+ tv1 = thr->valstack + cat->idx_base;
+ DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1));
+#if defined(DUK_USE_FASTINT)
+ DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv1));
+ label_id = (duk_small_uint_t) DUK_TVAL_GET_FASTINT_U32(tv1);
+#else
+ label_id = (duk_small_uint_t) DUK_TVAL_GET_NUMBER(tv1);
+#endif
+ lj_type = cont_type;
+ duk__handle_break_or_continue(thr, label_id, lj_type);
+ goto restart_execution;
+ }
+ default: {
DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with abrupt completion, lj_type=%ld -> "
"dismantle catcher, re-throw error",
(long) cont_type));
duk_push_tval(ctx, thr->valstack + cat->idx_base);
- /* XXX: assert lj type valid */
duk_err_setup_heap_ljstate(thr, (duk_small_int_t) cont_type);
DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */
duk_err_longjmp(thr);
DUK_UNREACHABLE();
}
+ }
- /* continue execution after ENDFIN */
+ /* Must restart in all cases because we NULLed thr->ptr_curr_pc. */
+ DUK_UNREACHABLE();
break;
}
@@ -68171,6 +69906,12 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
* break re-throwing for instance.
*/
+ /* Sync so that augmentation sees up-to-date activations, NULL
+ * thr->ptr_curr_pc so that it's not used if side effects occur
+ * in augmentation or longjmp handling.
+ */
+ DUK__SYNC_AND_NULL_CURR_PC();
+
duk_dup(ctx, (duk_idx_t) bc);
DUK_DDD(DUK_DDDPRINT("THROW ERROR (BYTECODE): %!dT (before throw augment)",
(duk_tval *) duk_get_tval(ctx, -1)));
@@ -68184,7 +69925,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */
duk_err_longjmp(thr);
-
DUK_UNREACHABLE();
break;
}
@@ -68210,10 +69950,14 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
* from precompiled bytecode.
*/
#if defined(DUK_USE_DEBUGGER_SUPPORT)
- DUK_D(DUK_DPRINT("DEBUGGER statement encountered, halt execution"));
if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- DUK_HEAP_SET_PAUSED(thr->heap);
+ DUK_D(DUK_DPRINT("DEBUGGER statement encountered, halt execution"));
+ DUK__SYNC_AND_NULL_CURR_PC();
+ duk_debug_halt_execution(thr, 1 /*use_prev_pc*/);
+ DUK_D(DUK_DPRINT("DEBUGGER statement finished, resume execution"));
goto restart_execution;
+ } else {
+ DUK_D(DUK_DPRINT("DEBUGGER statement ignored, debugger not attached"));
}
#else
DUK_D(DUK_DPRINT("DEBUGGER statement ignored, no debugger support"));
@@ -68222,43 +69966,23 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
}
case DUK_EXTRAOP_BREAK: {
- duk_context *ctx = (duk_context *) thr;
duk_uint_fast_t bc = DUK_DEC_BC(ins);
- /* always the "slow break" variant (longjmp'ing); a "fast break" is
- * simply an DUK_OP_JUMP.
- */
-
DUK_DDD(DUK_DDDPRINT("BREAK: %ld", (long) bc));
- duk_push_uint(ctx, (duk_uint_t) bc);
- duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_BREAK);
-
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */
- duk_err_longjmp(thr);
-
- DUK_UNREACHABLE();
- break;
+ DUK__SYNC_AND_NULL_CURR_PC();
+ duk__handle_break_or_continue(thr, (duk_uint_t) bc, DUK_LJ_TYPE_BREAK);
+ goto restart_execution;
}
case DUK_EXTRAOP_CONTINUE: {
- duk_context *ctx = (duk_context *) thr;
duk_uint_fast_t bc = DUK_DEC_BC(ins);
- /* always the "slow continue" variant (longjmp'ing); a "fast continue" is
- * simply an DUK_OP_JUMP.
- */
-
DUK_DDD(DUK_DDDPRINT("CONTINUE: %ld", (long) bc));
- duk_push_uint(ctx, (duk_uint_t) bc);
- duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_CONTINUE);
-
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */
- duk_err_longjmp(thr);
-
- DUK_UNREACHABLE();
- break;
+ DUK__SYNC_AND_NULL_CURR_PC();
+ duk__handle_break_or_continue(thr, (duk_uint_t) bc, DUK_LJ_TYPE_CONTINUE);
+ goto restart_execution;
}
case DUK_EXTRAOP_BNOT: {
@@ -68313,7 +70037,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
cat->flags = DUK_CAT_TYPE_LABEL | (bc << DUK_CAT_LABEL_SHIFT);
cat->callstack_index = thr->callstack_top - 1;
- cat->pc_base = act->pc; /* pre-incremented, points to first jump slot */
+ cat->pc_base = (duk_instr_t *) curr_pc; /* pre-incremented, points to first jump slot */
cat->idx_base = 0; /* unused for label */
cat->h_varname = NULL;
@@ -68322,7 +70046,7 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
(long) cat->flags, (long) cat->callstack_index, (long) cat->pc_base,
(long) cat->idx_base, (duk_heaphdr *) cat->h_varname, (long) DUK_CAT_GET_LABEL(cat)));
- act->pc += 2; /* skip jump slots */
+ curr_pc += 2; /* skip jump slots */
break;
}
@@ -68347,32 +70071,6 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
break;
}
-#ifdef DUK_USE_DEBUG
- case DUK_EXTRAOP_DUMPREG: {
- DUK_D(DUK_DPRINT("DUMPREG: %ld -> %!T",
- (long) DUK_DEC_BC(ins),
- (duk_tval *) duk_get_tval((duk_context *) thr, (duk_idx_t) DUK_DEC_BC(ins))));
- break;
- }
-
- case DUK_EXTRAOP_DUMPREGS: {
- duk_idx_t i, i_top;
- i_top = duk_get_top((duk_context *) thr);
- DUK_D(DUK_DPRINT("DUMPREGS: %ld regs", (long) i_top));
- for (i = 0; i < i_top; i++) {
- DUK_D(DUK_DPRINT(" r%ld -> %!dT",
- (long) i,
- (duk_tval *) duk_get_tval((duk_context *) thr, i)));
- }
- break;
- }
-
- case DUK_EXTRAOP_LOGMARK: {
- DUK_D(DUK_DPRINT("LOGMARK: mark %ld at pc %ld", (long) DUK_DEC_BC(ins), (long) (act->pc - 1))); /* -1, autoinc */
- break;
- }
-#endif /* DUK_USE_DEBUG */
-
default: {
DUK__INTERNAL_ERROR("invalid extra opcode");
}
@@ -68400,7 +70098,16 @@ DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
#endif
}
+#undef DUK__LONGJMP_RESTART
+#undef DUK__LONGJMP_FINISHED
+#undef DUK__LONGJMP_RETHROW
+
+#undef DUK__RETHAND_RESTART
+#undef DUK__RETHAND_FINISHED
+
#undef DUK__INTERNAL_ERROR
+#undef DUK__SYNC_CURR_PC
+#undef DUK__SYNC_AND_NULL_CURR_PC
#line 1 "duk_js_ops.c"
/*
* Ecmascript specification algorithm and conversion helpers.
@@ -68506,6 +70213,7 @@ DUK_INTERNAL duk_bool_t duk_js_toboolean(duk_tval *tv) {
/* number */
duk_double_t d;
int c;
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv));
d = DUK_TVAL_GET_DOUBLE(tv);
c = DUK_FPCLASSIFY((double) d);
@@ -68644,6 +70352,7 @@ DUK_INTERNAL duk_double_t duk_js_tonumber(duk_hthread *thr, duk_tval *tv) {
#endif
default: {
/* number */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv));
return DUK_TVAL_GET_DOUBLE(tv);
}
@@ -69041,6 +70750,8 @@ DUK_INTERNAL duk_bool_t duk_js_equals_helper(duk_hthread *thr, duk_tval *tv_x, d
case DUK_TAG_FASTINT:
#endif
default: {
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_x));
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_y));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_y));
DUK_UNREACHABLE();
@@ -69690,6 +71401,7 @@ DUK_INTERNAL duk_hstring *duk_js_typeof(duk_hthread *thr, duk_tval *tv_x) {
#endif
default: {
/* number */
+ DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_x));
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x));
stridx = DUK_STRIDX_LC_NUMBER;
break;
@@ -69780,8 +71492,8 @@ DUK_INTERNAL duk_uarridx_t duk_js_to_arrayindex_string_helper(duk_hstring *h) {
* convenient field). The prototype chain is not followed in the ordinary
* sense for variable lookups.
*
- * See identifier-handling.txt for more details on the identifier algorithms
- * and the internal representation. See function-objects.txt for details on
+ * See identifier-handling.rst for more details on the identifier algorithms
+ * and the internal representation. See function-objects.rst for details on
* what function templates and instances are expected to look like.
*
* Care must be taken to avoid duk_tval pointer invalidation caused by
@@ -69822,7 +71534,7 @@ typedef struct {
*
* See E5 Section 13.2 for detailed requirements on the function objects;
* there are no similar requirements for function "templates" which are an
- * implementation dependent internal feature. Also see function-objects.txt
+ * implementation dependent internal feature. Also see function-objects.rst
* for a discussion on the function instance properties provided by this
* implementation.
*
@@ -69980,7 +71692,7 @@ void duk_js_push_closure(duk_hthread *thr,
* _Lexenv is always set; _Varenv defaults to _Lexenv if missing,
* so _Varenv is only set if _Lexenv != _Varenv.
*
- * This is relatively complex, see doc/identifier-handling.txt.
+ * This is relatively complex, see doc/identifier-handling.rst.
*/
if (DUK_HOBJECT_HAS_NEWENV(&fun_temp->obj)) {
@@ -70653,6 +72365,8 @@ duk_bool_t duk__get_identifier_reference(duk_hthread *thr,
duk_bool_t parents,
duk__id_lookup_result *out) {
duk_tval *tv;
+ duk_tval *tv_target;
+ duk_tval tv_name;
duk_uint_t sanity;
DUK_ASSERT(thr != NULL);
@@ -70814,7 +72528,8 @@ duk_bool_t duk__get_identifier_reference(duk_hthread *thr,
*
* Binding (target) object is an external, uncontrolled object.
* Identifier may be bound in an ancestor property, and may be
- * an accessor.
+ * an accessor. Target can also be a Proxy which we must support
+ * here.
*/
/* XXX: we could save space by using _Target OR _This. If _Target, assume
@@ -70823,24 +72538,38 @@ duk_bool_t duk__get_identifier_reference(duk_hthread *thr,
*/
duk_hobject *target;
+ duk_bool_t found;
DUK_ASSERT(cl == DUK_HOBJECT_CLASS_OBJENV);
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_TARGET(thr));
- DUK_ASSERT(tv != NULL);
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- target = DUK_TVAL_GET_OBJECT(tv);
+ tv_target = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_TARGET(thr));
+ DUK_ASSERT(tv_target != NULL);
+ DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv_target));
+ target = DUK_TVAL_GET_OBJECT(tv_target);
DUK_ASSERT(target != NULL);
- /* Note: we must traverse the prototype chain, so use an actual
- * hasprop call here. The property may also be an accessor, so
- * we can't get an duk_tval pointer here.
+ /* Target may be a Proxy or property may be an accessor, so we must
+ * use an actual, Proxy-aware hasprop check here.
*
* out->holder is NOT set to the actual duk_hobject where the
- * property is found, but rather the target object.
+ * property is found, but rather the object binding target object.
*/
- if (duk_hobject_hasprop_raw(thr, target, name)) {
+ if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(target)) {
+ DUK_ASSERT(name != NULL);
+ DUK_TVAL_SET_STRING(&tv_name, name);
+
+ found = duk_hobject_hasprop(thr, tv_target, &tv_name);
+ } else {
+ /* XXX: duk_hobject_hasprop() would be correct for
+ * non-Proxy objects too, but it is about ~20-25%
+ * slower at present so separate code paths for
+ * Proxy and non-Proxy now.
+ */
+ found = duk_hobject_hasprop_raw(thr, target, name);
+ }
+
+ if (found) {
out->value = NULL; /* can't get value, may be accessor */
out->attrs = 0; /* irrelevant when out->value == NULL */
tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_THIS(thr));
@@ -71098,17 +72827,13 @@ void duk__putvar_helper(duk_hthread *thr,
* (immutable binding), use duk_hobject_putprop() which
* will respect mutability.
*/
- duk_tval tv_tmp;
duk_tval *tv_val;
DUK_ASSERT(ref.this_binding == NULL); /* always for register bindings */
tv_val = ref.value;
DUK_ASSERT(tv_val != NULL);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_val);
- DUK_TVAL_SET_TVAL(tv_val, val);
- DUK_TVAL_INCREF(thr, val);
- DUK_TVAL_DECREF(thr, &tv_tmp); /* must be last */
+ DUK_TVAL_SET_TVAL_UPDREF(thr, tv_val, val); /* side effects */
/* ref.value and ref.this_binding invalidated here */
} else {
@@ -71451,12 +73176,8 @@ duk_bool_t duk__declvar_helper(duk_hthread *thr,
DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
DUK_UNREF(tmp);
} else {
- duk_tval tv_tmp;
-
tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, holder, e_idx);
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
- DUK_TVAL_SET_UNDEFINED_UNUSED(tv);
- DUK_TVAL_DECREF(thr, &tv_tmp);
+ DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv);
}
/* Here val would be potentially invalid if we didn't make
@@ -73644,7 +75365,7 @@ DUK_INTERNAL void duk_lexer_parse_re_ranges(duk_lexer_ctx *lex_ctx, duk_re_range
* and uses a minimum number of digits. The big number arithmetic has a
* fixed maximum size and does not require dynamic allocations.
*
- * See: doc/number-conversion.txt.
+ * See: doc/number-conversion.rst.
*/
/* include removed: duk_internal.h */
@@ -74259,7 +75980,7 @@ DUK_LOCAL void duk__bi_exp_small(duk__bigint *x, duk_small_int_t b, duk_small_in
* The same algorithm is used for number parsing (with b=10 and B=2)
* by generating one extra digit and doing rounding manually.
*
- * See doc/number-conversion.txt for limitations.
+ * See doc/number-conversion.rst for limitations.
*/
/* Maximum number of digits generated. */
@@ -75905,7 +77626,7 @@ DUK_INTERNAL void duk_numconv_parse(duk_context *ctx, duk_small_int_t radix, duk
/*
* Regexp compilation.
*
- * See doc/regexp.txt for a discussion of the compilation approach and
+ * See doc/regexp.rst for a discussion of the compilation approach and
* current limitations.
*
* Regexp bytecode assumes jumps can be expressed with signed 32-bit
@@ -76046,7 +77767,7 @@ DUK_LOCAL void duk__remove_slice(duk_re_compiler_ctx *re_ctx, duk_uint32_t data_
*
* Computing the final (adjusted) skip value, which is relative to the
* first byte of the next instruction, is a bit tricky because of the
- * variable length UTF-8 encoding. See doc/regexp.txt for discussion.
+ * variable length UTF-8 encoding. See doc/regexp.rst for discussion.
*/
DUK_LOCAL duk_uint32_t duk__insert_jump_offset(duk_re_compiler_ctx *re_ctx, duk_uint32_t offset, duk_int32_t skip) {
duk_small_int_t len;
@@ -76079,7 +77800,7 @@ DUK_LOCAL duk_uint32_t duk__append_jump_offset(duk_re_compiler_ctx *re_ctx, duk_
* continuous range is not necessarily continuous (e.g. [x-{] is
* continuous but [X-{] is not). The current algorithm creates the
* canonicalized range(s) space efficiently at the cost of compile
- * time execution time (see doc/regexp.txt for discussion).
+ * time execution time (see doc/regexp.rst for discussion).
*
* Note that the ctx->nranges is a context-wide temporary value
* (this is OK because there cannot be multiple character classes
@@ -76145,7 +77866,7 @@ DUK_LOCAL void duk__generate_ranges(void *userdata, duk_codepoint_t r1, duk_code
* lookaheads, capturing parentheses, and non-capturing parentheses.
*
* The function determines whether the entire disjunction is a 'simple atom'
- * (see doc/regexp.txt discussion on 'simple quantifiers') and if so,
+ * (see doc/regexp.rst discussion on 'simple quantifiers') and if so,
* returns the atom character length which is needed by the caller to keep
* track of its own atom character length. A disjunction with more than one
* alternative is never considered a simple atom (although in some cases
@@ -76846,7 +78567,7 @@ DUK_INTERNAL void duk_regexp_compile(duk_hthread *thr) {
re_ctx.lex.input = DUK_HSTRING_GET_DATA(h_pattern);
re_ctx.lex.input_length = DUK_HSTRING_GET_BYTELEN(h_pattern);
re_ctx.lex.token_limit = DUK_RE_COMPILE_TOKEN_LIMIT;
- re_ctx.recursion_limit = DUK_RE_COMPILE_RECURSION_LIMIT;
+ re_ctx.recursion_limit = DUK_USE_REGEXP_COMPILER_RECLIMIT;
re_ctx.re_flags = duk__parse_regexp_flags(thr, h_flags);
DUK_BW_INIT_PUSHBUF(thr, &re_ctx.bw, DUK__RE_INITIAL_BUFSIZE);
@@ -77163,7 +78884,7 @@ DUK_LOCAL const duk_uint8_t *duk__match_regexp(duk_re_matcher_ctx *re_ctx, const
*
* There is no opcode for matching multiple characters. The
* regexp compiler has trouble joining strings efficiently
- * during compilation. See doc/regexp.txt for more discussion.
+ * during compilation. See doc/regexp.rst for more discussion.
*/
duk_codepoint_t c1, c2;
@@ -77702,7 +79423,7 @@ DUK_LOCAL void duk__regexp_match_helper(duk_hthread *thr, duk_small_int_t force_
re_ctx.bytecode = (duk_uint8_t *) DUK_HSTRING_GET_DATA(h_bytecode);
re_ctx.bytecode_end = re_ctx.bytecode + DUK_HSTRING_GET_BYTELEN(h_bytecode);
re_ctx.saved = NULL;
- re_ctx.recursion_limit = DUK_RE_EXECUTE_RECURSION_LIMIT;
+ re_ctx.recursion_limit = DUK_USE_REGEXP_EXECUTOR_RECLIMIT;
re_ctx.steps_limit = DUK_RE_EXECUTE_STEPS_LIMIT;
/* read header */
@@ -78367,7 +80088,7 @@ DUK_LOCAL void duk__selftest_64bit_arithmetic(void) {
* Casting
*/
-DUK_LOCAL void duk__selftest_cast_double_to_uint(void) {
+DUK_LOCAL void duk__selftest_cast_double_to_small_uint(void) {
/*
* https://github.com/svaarala/duktape/issues/127#issuecomment-77863473
*/
@@ -78378,12 +80099,14 @@ DUK_LOCAL void duk__selftest_cast_double_to_uint(void) {
duk_double_t d1v, d2v;
duk_small_uint_t uv;
+ /* Test without volatiles */
+
d1 = 1.0;
u = (duk_small_uint_t) d1;
d2 = (duk_double_t) u;
if (!(d1 == 1.0 && u == 1 && d2 == 1.0 && d1 == d2)) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to uint cast failed");
+ DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to duk_small_uint_t cast failed");
}
/* Same test with volatiles */
@@ -78393,7 +80116,26 @@ DUK_LOCAL void duk__selftest_cast_double_to_uint(void) {
d2v = (duk_double_t) uv;
if (!(d1v == 1.0 && uv == 1 && d2v == 1.0 && d1v == d2v)) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to uint cast failed");
+ DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to duk_small_uint_t cast failed");
+ }
+}
+
+DUK_LOCAL void duk__selftest_cast_double_to_uint32(void) {
+ /*
+ * This test fails on an exotic ARM target; double-to-uint
+ * cast is incorrectly clamped to -signed- int highest value.
+ *
+ * https://github.com/svaarala/duktape/issues/336
+ */
+
+ duk_double_t dv;
+ duk_uint32_t uv;
+
+ dv = 3735928559.0; /* 0xdeadbeef in decimal */
+ uv = (duk_uint32_t) dv;
+
+ if (uv != 0xdeadbeefUL) {
+ DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to duk_uint32_t cast failed");
}
}
@@ -78412,7 +80154,8 @@ DUK_INTERNAL void duk_selftest_run_tests(void) {
duk__selftest_double_zero_sign();
duk__selftest_struct_align();
duk__selftest_64bit_arithmetic();
- duk__selftest_cast_double_to_uint();
+ duk__selftest_cast_double_to_small_uint();
+ duk__selftest_cast_double_to_uint32();
}
#undef DUK__DBLUNION_CMP_TRUE
@@ -78841,6 +80584,5296 @@ const duk_uint8_t duk_unicode_caseconv_lc[616] = {
125,44,109,2,81,44,110,2,113,44,111,2,80,44,112,2,82,167,125,29,121,167,
141,2,101,2,2,97,0,52,129,131,128,
};
+
+/* FIXME: CONDITIONAL */
+/*
+ * Automatically generated by extract_caseconv.py, do not edit!
+ */
+
+const duk_uint16_t duk_unicode_re_canon_lookup[65536] = {
+0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,
+28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,
+53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,
+78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,65,66,67,68,69,70,
+71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,123,124,125,
+126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
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+65174,65175,65176,65177,65178,65179,65180,65181,65182,65183,65184,65185,
+65186,65187,65188,65189,65190,65191,65192,65193,65194,65195,65196,65197,
+65198,65199,65200,65201,65202,65203,65204,65205,65206,65207,65208,65209,
+65210,65211,65212,65213,65214,65215,65216,65217,65218,65219,65220,65221,
+65222,65223,65224,65225,65226,65227,65228,65229,65230,65231,65232,65233,
+65234,65235,65236,65237,65238,65239,65240,65241,65242,65243,65244,65245,
+65246,65247,65248,65249,65250,65251,65252,65253,65254,65255,65256,65257,
+65258,65259,65260,65261,65262,65263,65264,65265,65266,65267,65268,65269,
+65270,65271,65272,65273,65274,65275,65276,65277,65278,65279,65280,65281,
+65282,65283,65284,65285,65286,65287,65288,65289,65290,65291,65292,65293,
+65294,65295,65296,65297,65298,65299,65300,65301,65302,65303,65304,65305,
+65306,65307,65308,65309,65310,65311,65312,65313,65314,65315,65316,65317,
+65318,65319,65320,65321,65322,65323,65324,65325,65326,65327,65328,65329,
+65330,65331,65332,65333,65334,65335,65336,65337,65338,65339,65340,65341,
+65342,65343,65344,65313,65314,65315,65316,65317,65318,65319,65320,65321,
+65322,65323,65324,65325,65326,65327,65328,65329,65330,65331,65332,65333,
+65334,65335,65336,65337,65338,65371,65372,65373,65374,65375,65376,65377,
+65378,65379,65380,65381,65382,65383,65384,65385,65386,65387,65388,65389,
+65390,65391,65392,65393,65394,65395,65396,65397,65398,65399,65400,65401,
+65402,65403,65404,65405,65406,65407,65408,65409,65410,65411,65412,65413,
+65414,65415,65416,65417,65418,65419,65420,65421,65422,65423,65424,65425,
+65426,65427,65428,65429,65430,65431,65432,65433,65434,65435,65436,65437,
+65438,65439,65440,65441,65442,65443,65444,65445,65446,65447,65448,65449,
+65450,65451,65452,65453,65454,65455,65456,65457,65458,65459,65460,65461,
+65462,65463,65464,65465,65466,65467,65468,65469,65470,65471,65472,65473,
+65474,65475,65476,65477,65478,65479,65480,65481,65482,65483,65484,65485,
+65486,65487,65488,65489,65490,65491,65492,65493,65494,65495,65496,65497,
+65498,65499,65500,65501,65502,65503,65504,65505,65506,65507,65508,65509,
+65510,65511,65512,65513,65514,65515,65516,65517,65518,65519,65520,65521,
+65522,65523,65524,65525,65526,65527,65528,65529,65530,65531,65532,65533,
+65534,65535,
+};
#line 1 "duk_util_bitdecoder.c"
/*
* Bitstream decoder.
@@ -79237,8 +86270,7 @@ DUK_INTERNAL void duk_bw_remove_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *b
* Not really bufwriter related, but currently used together.
*/
-DUK_ALWAYS_INLINE
-DUK_INTERNAL duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p) {
+DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p) {
union {
duk_uint8_t b[2];
duk_uint16_t x;
@@ -79250,8 +86282,7 @@ DUK_INTERNAL duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p) {
return u.x;
}
-DUK_ALWAYS_INLINE
-DUK_INTERNAL duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p) {
+DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p) {
union {
duk_uint8_t b[4];
duk_uint32_t x;
@@ -79263,8 +86294,7 @@ DUK_INTERNAL duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p) {
return u.x;
}
-DUK_ALWAYS_INLINE
-DUK_INTERNAL duk_double_t duk_raw_read_double_be(duk_uint8_t **p) {
+DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_raw_read_double_be(duk_uint8_t **p) {
duk_double_union du;
union {
duk_uint8_t b[4];
@@ -79282,8 +86312,7 @@ DUK_INTERNAL duk_double_t duk_raw_read_double_be(duk_uint8_t **p) {
return du.d;
}
-DUK_ALWAYS_INLINE
-DUK_INTERNAL void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val) {
+DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val) {
union {
duk_uint8_t b[2];
duk_uint16_t x;
@@ -79294,8 +86323,7 @@ DUK_INTERNAL void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val) {
*p += 2;
}
-DUK_ALWAYS_INLINE
-DUK_INTERNAL void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val) {
+DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val) {
union {
duk_uint8_t b[4];
duk_uint32_t x;
@@ -79306,8 +86334,7 @@ DUK_INTERNAL void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val) {
*p += 4;
}
-DUK_ALWAYS_INLINE
-DUK_INTERNAL void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val) {
+DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val) {
duk_double_union du;
union {
duk_uint8_t b[4];