/* * Determine platform features, select feature selection defines * (e.g. _XOPEN_SOURCE), include system headers, and define DUK_USE_xxx * defines which are (only) checked in Duktape internal code for * activated features. Duktape feature selection is based on automatic * feature detection, user supplied DUK_OPT_xxx defines, and optionally * a "duk_custom.h" user header (if DUK_OPT_HAVE_CUSTOM_H is defined). * * When compiling Duktape, DUK_COMPILING_DUKTAPE is set, and this file * is included before any system headers are included. Feature selection * defines (e.g. _XOPEN_SOURCE) are defined here before any system headers * are included (which is a requirement for system headers to work correctly). * This file is responsible for including all system headers and contains * all platform dependent cruft in general. When compiling user code, * DUK_COMPILING_DUKTAPE is not defined, and we must avoid e.g. defining * unnecessary feature selection defines. * * The general order of handling: * - Compiler feature detection (require no includes) * - Intermediate platform detection (-> easier platform defines) * - Platform detection, system includes, byte order detection, etc * - ANSI C wrappers (e.g. DUK_MEMCMP), wrappers for constants, etc * - DUK_USE_xxx defines are resolved based on input defines * - Duktape Date provider settings * - Final sanity checks * * DUK_F_xxx are internal feature detection macros which should not be * used outside this header. * * Useful resources: * * http://sourceforge.net/p/predef/wiki/Home/ * http://sourceforge.net/p/predef/wiki/Architectures/ * http://stackoverflow.com/questions/5919996/how-to-detect-reliably-mac-os-x-ios-linux-windows-in-c-preprocessor * http://en.wikipedia.org/wiki/C_data_types#Fixed-width_integer_types * * Preprocessor defines available in a particular GCC: * * gcc -dM -E - = 199901L) #define DUK_F_C99 #endif #undef DUK_F_CPP #if defined(__cplusplus) #define DUK_F_CPP #endif #undef DUK_F_CPP11 #if defined(__cplusplus) && (__cplusplus >= 201103L) #define DUK_F_CPP11 #endif /* * Provides the duk_rdtsc() inline function (if available), limited to * GCC C99. * * See: http://www.mcs.anl.gov/~kazutomo/rdtsc.html */ /* XXX: more accurate detection of what gcc versions work; more inline * asm versions for other compilers. */ #if defined(__GNUC__) && defined(__i386__) && defined(DUK_F_C99) && \ !defined(__cplusplus) /* unsigned long long not standard */ static __inline__ unsigned long long duk_rdtsc(void) { unsigned long long int x; __asm__ volatile (".byte 0x0f, 0x31" : "=A" (x)); return x; } #define DUK_USE_RDTSC() duk_rdtsc() #elif defined(__GNUC__) && defined(__x86_64__) && defined(DUK_F_C99) && \ !defined(__cplusplus) /* unsigned long long not standard */ static __inline__ unsigned long long duk_rdtsc(void) { unsigned hi, lo; __asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi)); return ((unsigned long long) lo) | (((unsigned long long) hi) << 32); } #define DUK_USE_RDTSC() duk_rdtsc() #else /* not available */ #undef DUK_USE_RDTSC #endif /* * Intermediate platform, architecture, and compiler detection. These are * hopelessly intertwined - e.g. architecture defines depend on compiler etc. * * Provide easier defines for platforms and compilers which are often tricky * or verbose to detect. The intent is not to provide intermediate defines for * all features; only if existing feature defines are inconvenient. */ /* Intel x86 (32-bit) */ #if defined(i386) || defined(__i386) || defined(__i386__) || \ defined(__i486__) || defined(__i586__) || defined(__i686__) || \ defined(__IA32__) || defined(_M_IX86) || defined(__X86__) || \ defined(_X86_) || defined(__THW_INTEL__) || defined(__I86__) #define DUK_F_X86 #endif /* AMD64 (64-bit) */ #if defined(__amd64__) || defined(__amd64) || \ defined(__x86_64__) || defined(__x86_64) || \ defined(_M_X64) || defined(_M_AMD64) #define DUK_F_X64 #endif /* X32: 64-bit with 32-bit pointers (allows packed tvals). X32 support is * not very mature yet. * * https://sites.google.com/site/x32abi/ */ #if defined(DUK_F_X64) && \ (defined(_ILP32) || defined(__ILP32__)) #define DUK_F_X32 /* define only one of: DUK_F_X86, DUK_F_X32, or DUK_F_X64 */ #undef DUK_F_X64 #undef DUK_F_X86 #endif /* ARM */ #if defined(__arm__) || defined(__thumb__) || defined(_ARM) || defined(_M_ARM) #define DUK_F_ARM #endif /* MIPS */ /* Related defines: __MIPSEB__, __MIPSEL__, __mips_isa_rev, __LP64__ */ #if defined(__mips__) || defined(mips) || defined(_MIPS_ISA) || \ defined(_R3000) || defined(_R4000) || defined(_R5900) || \ defined(_MIPS_ISA_MIPS1) || defined(_MIPS_ISA_MIPS2) || \ defined(_MIPS_ISA_MIPS3) || defined(_MIPS_ISA_MIPS4) || \ defined(__mips) || defined(__MIPS__) #define DUK_F_MIPS #if defined(__LP64__) || defined(__mips64) || defined(__mips64__) || \ defined(__mips_n64) #define DUK_F_MIPS64 #else #define DUK_F_MIPS32 #endif #endif /* SuperH */ #if defined(__sh__) || \ defined(__sh1__) || defined(__SH1__) || \ defined(__sh2__) || defined(__SH2__) || \ defined(__sh3__) || defined(__SH3__) || \ defined(__sh4__) || defined(__SH4__) || \ defined(__sh5__) || defined(__SH5__) #define DUK_F_SUPERH #endif /* Motorola 68K. Not defined by VBCC, so user must define one of these * manually when using VBCC. */ #if defined(__m68k__) || defined(M68000) || defined(__MC68K__) #define DUK_F_M68K #endif /* PowerPC */ #if defined(__powerpc) || defined(__powerpc__) || defined(__PPC__) #define DUK_F_PPC #if defined(__PPC64__) #define DUK_F_PPC64 #else #define DUK_F_PPC32 #endif #endif /* Linux */ #if defined(__linux) || defined(__linux__) || defined(linux) #define DUK_F_LINUX #endif /* FreeBSD */ #if defined(__FreeBSD__) || defined(__FreeBSD) #define DUK_F_FREEBSD #endif /* NetBSD */ #if defined(__NetBSD__) || defined(__NetBSD) #define DUK_F_NETBSD #endif /* OpenBSD */ #if defined(__OpenBSD__) || defined(__OpenBSD) #define DUK_F_OPENBSD #endif /* BSD variant */ #if defined(DUK_F_FREEBSD) || defined(DUK_F_NETBSD) || defined(DUK_F_OPENBSD) || \ defined(__bsdi__) || defined(__DragonFly__) #define DUK_F_BSD #endif /* Generic Unix (includes Cygwin) */ #if defined(__unix) || defined(__unix__) || defined(unix) || \ defined(DUK_F_LINUX) || defined(DUK_F_BSD) #define DUK_F_UNIX #endif /* Cygwin */ #if defined(__CYGWIN__) #define DUK_F_CYGWIN #endif /* Windows (32-bit or above) */ #if defined(_WIN32) || defined(WIN32) || defined(_WIN64) || defined(WIN64) || \ defined(__WIN32__) || defined(__TOS_WIN__) || defined(__WINDOWS__) #define DUK_F_WINDOWS #endif #if defined(__APPLE__) #define DUK_F_APPLE #endif /* Atari ST TOS. __TOS__ defined by PureC (which doesn't work as a target now * because int is 16-bit, to be fixed). No platform define in VBCC apparently, * so to use with VBCC, user must define '__TOS__' manually. */ #if defined(__TOS__) #define DUK_F_TOS #endif /* AmigaOS. Neither AMIGA nor __amigaos__ is defined on VBCC, so user must * define 'AMIGA' manually. */ #if defined(AMIGA) || defined(__amigaos__) #define DUK_F_AMIGAOS #endif /* Flash player (e.g. Crossbridge) */ #if defined(__FLASHPLAYER__) #define DUK_F_FLASHPLAYER #endif /* Emscripten (provided explicitly by user), improve if possible */ #if defined(EMSCRIPTEN) #define DUK_F_EMSCRIPTEN #endif /* QNX */ #if defined(__QNX__) #define DUK_F_QNX #endif /* TI-Nspire (using Ndless) */ #if defined(_TINSPIRE) #define DUK_F_TINSPIRE #endif /* GCC and GCC version convenience define. */ #if defined(__GNUC__) #define DUK_F_GCC #if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) /* Convenience, e.g. gcc 4.5.1 == 40501; http://stackoverflow.com/questions/6031819/emulating-gccs-builtin-unreachable */ #define DUK_F_GCC_VERSION (__GNUC__ * 10000L + __GNUC_MINOR__ * 100L + __GNUC_PATCHLEVEL__) #else #error cannot figure out gcc version #endif #endif /* Clang */ #if defined(__clang__) #define DUK_F_CLANG /* It seems clang also defines __GNUC__, so undo the GCC detection. */ #if defined(DUK_F_GCC) #undef DUK_F_GCC #endif #if defined(DUK_F_GCC_VERSION) #undef DUK_F_GCC_VERSION #endif #endif /* MSVC */ #if defined(_MSC_VER) /* MSVC preprocessor defines: http://msdn.microsoft.com/en-us/library/b0084kay.aspx * _MSC_FULL_VER includes the build number, but it has at least two formats, see e.g. * BOOST_MSVC_FULL_VER in http://www.boost.org/doc/libs/1_52_0/boost/config/compiler/visualc.hpp */ #define DUK_F_MSVC #if defined(_MSC_FULL_VER) #if (_MSC_FULL_VER > 100000000) #define DUK_F_MSVC_FULL_VER _MSC_FULL_VER #else #define DUK_F_MSCV_FULL_VER (_MSC_FULL_VER * 10) #endif #endif #endif /* _MSC_VER */ /* MinGW */ #if defined(__MINGW32__) || defined(__MINGW64__) /* NOTE: Also GCC flags are detected (DUK_F_GCC etc). */ #define DUK_F_MINGW #endif /* BCC (Bruce's C compiler): this is a "torture target" for compilation */ #if defined(__BCC__) || defined(__BCC_VERSION__) #define DUK_F_BCC #endif #if defined(__VBCC__) #define DUK_F_VBCC #endif /* * Platform detection, system includes, Date provider selection. * * Feature selection (e.g. _XOPEN_SOURCE) must happen before any system * headers are included. This header should avoid providing any feature * selection defines when compiling user code (only when compiling Duktape * itself). If a feature selection option is required for user code to * compile correctly (e.g. it is needed for type detection), it should * probably be -checked- here, not defined here. * * Date provider selection seems a bit out-of-place here, but since * the date headers and provider functions are heavily platform * specific, there's little point in duplicating the platform if-else * ladder. All platform specific Date provider functions are in * duk_bi_date.c; here we provide appropriate #defines to enable them, * and include all the necessary system headers so that duk_bi_date.c * compiles. Date "providers" are: * * NOW = getting current time (required) * TZO = getting local time offset (required) * PRS = parse datetime (optional) * FMT = format datetime (optional) * * There's a lot of duplication here, unfortunately, because many * platforms have similar (but not identical) headers, Date providers, * etc. The duplication could be removed by more complicated nested * #ifdefs, but it would then be more difficult to make fixes which * affect only a specific platform. * * XXX: add a way to provide custom functions to provide the critical * primitives; this would be convenient when porting to unknown platforms * (rather than muck with Duktape internals). */ #if defined(DUK_COMPILING_DUKTAPE) && \ (defined(DUK_F_LINUX) || defined(DUK_F_EMSCRIPTEN)) /* A more recent Emscripten (2014-05) seems to lack "linux" environment * defines, so check for Emscripten explicitly. */ #ifndef _POSIX_C_SOURCE #define _POSIX_C_SOURCE 200809L #endif #ifndef _GNU_SOURCE #define _GNU_SOURCE /* e.g. getdate_r */ #endif #ifndef _XOPEN_SOURCE #define _XOPEN_SOURCE /* e.g. strptime */ #endif #endif #if defined(DUK_F_QNX) && defined(DUK_COMPILING_DUKTAPE) /* See: /opt/qnx650/target/qnx6/usr/include/sys/platform.h */ #define _XOPEN_SOURCE 600 #define _POSIX_C_SOURCE 200112L #endif #undef DUK_F_MSVC_CRT_SECURE #if defined(DUK_F_WINDOWS) && defined(_MSC_VER) /* http://msdn.microsoft.com/en-us/library/8ef0s5kh.aspx * http://msdn.microsoft.com/en-us/library/wd3wzwts.aspx * Seem to be available since VS2005. */ #if (_MSC_VER >= 1400) /* VS2005+, secure CRT functions are preferred. Windows Store applications * (and probably others) should use these. */ #define DUK_F_MSVC_CRT_SECURE #endif #if (_MSC_VER < 1700) /* VS2012+ has stdint.h, < VS2012 does not (but it's available for download). */ #define DUK_F_NO_STDINT_H #endif /* Initial fix: disable secure CRT related warnings when compiling Duktape * itself (must be defined before including Windows headers). Don't define * for user code including duktape.h. */ #if defined(DUK_COMPILING_DUKTAPE) && !defined(_CRT_SECURE_NO_WARNINGS) #define _CRT_SECURE_NO_WARNINGS #endif #endif /* DUK_F_WINDOWS && _MSC_VER */ #if defined(DUK_F_TOS) || defined(DUK_F_BCC) #define DUK_F_NO_STDINT_H #endif /* Workaround for older C++ compilers before including , * see e.g.: https://sourceware.org/bugzilla/show_bug.cgi?id=15366 */ #if defined(__cplusplus) && !defined(__STDC_LIMIT_MACROS) #define __STDC_LIMIT_MACROS #endif #if defined(__cplusplus) && !defined(__STDC_CONSTANT_MACROS) #define __STDC_CONSTANT_MACROS #endif #if defined(__APPLE__) /* Mac OSX, iPhone, Darwin */ #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #include #include #include #include #include #elif defined(DUK_F_OPENBSD) /* http://www.monkey.org/openbsd/archive/ports/0401/msg00089.html */ #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #include #include #include #include #include #elif defined(DUK_F_BSD) /* other BSD */ #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #include #include #include #include #include #elif defined(DUK_F_TOS) /* Atari ST TOS */ #define DUK_USE_DATE_NOW_TIME #define DUK_USE_DATE_TZO_GMTIME /* no parsing (not an error) */ #define DUK_USE_DATE_FMT_STRFTIME #include #include #elif defined(DUK_F_AMIGAOS) #if defined(DUK_F_M68K) /* AmigaOS on M68k */ #define DUK_USE_DATE_NOW_TIME #define DUK_USE_DATE_TZO_GMTIME /* no parsing (not an error) */ #define DUK_USE_DATE_FMT_STRFTIME #include #include #elif defined(DUK_F_PPC) #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #include #ifndef UINTPTR_MAX #define UINTPTR_MAX UINT_MAX #endif #else #error AmigaOS but not M68K/PPC, not supported now #endif #elif defined(DUK_F_WINDOWS) /* Windows 32-bit and 64-bit are currently the same. */ /* MSVC does not have sys/param.h */ #define DUK_USE_DATE_NOW_WINDOWS #define DUK_USE_DATE_TZO_WINDOWS /* Note: PRS and FMT are intentionally left undefined for now. This means * there is no platform specific date parsing/formatting but there is still * the ISO 8601 standard format. */ #if defined(DUK_COMPILING_DUKTAPE) #include #endif #include #elif defined(DUK_F_FLASHPLAYER) /* Crossbridge */ #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #include #include #include #include #elif defined(DUK_F_QNX) #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #include #include #include #include #elif defined(DUK_F_TINSPIRE) #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #include #include #include #include #elif defined(DUK_F_LINUX) #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #if defined(DUK_F_BCC) /* no endian.h */ #else #include #endif /* DUK_F_BCC */ #include #include #include #include #elif defined(__posix) /* POSIX */ #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #include #include #include #include #include #elif defined(DUK_F_CYGWIN) /* Cygwin -- don't use strptime() for now */ #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_FMT_STRFTIME #include #include #include #include #include #include #else /* Other UNIX, hopefully others */ #define DUK_USE_DATE_NOW_GETTIMEOFDAY #define DUK_USE_DATE_TZO_GMTIME_R #define DUK_USE_DATE_PRS_STRPTIME #define DUK_USE_DATE_FMT_STRFTIME #include #if defined(DUK_F_BCC) /* no endian.h */ #else #include #endif /* DUK_F_BCC */ #include #include #include #include #endif /* Shared includes */ #include #include #include #include /* varargs */ #include #include /* e.g. ptrdiff_t */ #if defined(DUK_F_NO_STDINT_H) /* stdint.h not available */ #else /* Technically C99 (C++11) but found in many systems. Note the workaround * above for some C++ compilers (__STDC_LIMIT_MACROS etc). */ #include #endif #include #if (defined(DUK_F_C99) || defined(DUK_F_CPP11)) && \ !defined(DUK_F_BCC) /* ULL / LL preprocessor constants should be avoided because they're not * always available. With suitable options, some compilers will support * 64-bit integer types but won't support ULL / LL preprocessor constants. * Assume C99/C++11 environments have these. However, BCC is nominally * C99 but doesn't support these constants. */ #define DUK_F_ULL_CONSTS #endif /* * Detection for specific libc variants (like uclibc) and other libc specific * features. Potentially depends on the #includes above. */ #if defined(__UCLIBC__) #define DUK_F_UCLIBC #endif /* * Wrapper typedefs and constants for integer types, also sanity check types. * * C99 typedefs are quite good but not always available, and we want to avoid * forcibly redefining the C99 typedefs. So, there are Duktape wrappers for * all C99 typedefs and Duktape code should only use these typedefs. Type * detection when C99 is not supported is best effort and may end up detecting * some types incorrectly. * * Pointer sizes are a portability problem: pointers to different types may * have a different size and function pointers are very difficult to manage * portably. * * http://en.wikipedia.org/wiki/C_data_types#Fixed-width_integer_types * * Note: there's an interesting corner case when trying to define minimum * signed integer value constants which leads to the current workaround of * defining e.g. -0x80000000 as (-0x7fffffffL - 1L). See doc/code-issues.txt * for a longer discussion. * * Note: avoid typecasts and computations in macro integer constants as they * can then no longer be used in macro relational expressions (such as * #if DUK_SIZE_MAX < 0xffffffffUL). There is internal code which relies on * being able to compare DUK_SIZE_MAX against a limit. */ /* XXX: add feature options to force basic types from outside? */ #if !defined(INT_MAX) #error INT_MAX not defined #endif /* Check that architecture is two's complement, standard C allows e.g. * INT_MIN to be -2**31+1 (instead of -2**31). */ #if defined(INT_MAX) && defined(INT_MIN) #if INT_MAX != -(INT_MIN + 1) #error platform does not seem complement of two #endif #else #error cannot check complement of two #endif /* Pointer size determination based on architecture. * XXX: unsure about BCC correctness. */ #if defined(DUK_F_X86) || defined(DUK_F_X32) || \ defined(DUK_F_BCC) || \ (defined(__WORDSIZE) && (__WORDSIZE == 32)) #define DUK_F_32BIT_PTRS #elif defined(DUK_F_X64) || \ (defined(__WORDSIZE) && (__WORDSIZE == 64)) #define DUK_F_64BIT_PTRS #else /* not sure, not needed with C99 anyway */ #endif /* Intermediate define for 'have inttypes.h' */ #undef DUK_F_HAVE_INTTYPES #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \ !(defined(DUK_F_AMIGAOS) && defined(DUK_F_VBCC)) /* vbcc + AmigaOS has C99 but no inttypes.h */ #define DUK_F_HAVE_INTTYPES #elif defined(__cplusplus) && (__cplusplus >= 201103L) /* C++11 apparently ratified stdint.h */ #define DUK_F_HAVE_INTTYPES #endif /* Basic integer typedefs and limits, preferably from inttypes.h, otherwise * through automatic detection. */ #if defined(DUK_F_HAVE_INTTYPES) /* C99 or compatible */ #define DUK_F_HAVE_64BIT #include typedef uint8_t duk_uint8_t; typedef int8_t duk_int8_t; typedef uint16_t duk_uint16_t; typedef int16_t duk_int16_t; typedef uint32_t duk_uint32_t; typedef int32_t duk_int32_t; typedef uint64_t duk_uint64_t; typedef int64_t duk_int64_t; typedef uint_least8_t duk_uint_least8_t; typedef int_least8_t duk_int_least8_t; typedef uint_least16_t duk_uint_least16_t; typedef int_least16_t duk_int_least16_t; typedef uint_least32_t duk_uint_least32_t; typedef int_least32_t duk_int_least32_t; typedef uint_least64_t duk_uint_least64_t; typedef int_least64_t duk_int_least64_t; typedef uint_fast8_t duk_uint_fast8_t; typedef int_fast8_t duk_int_fast8_t; typedef uint_fast16_t duk_uint_fast16_t; typedef int_fast16_t duk_int_fast16_t; typedef uint_fast32_t duk_uint_fast32_t; typedef int_fast32_t duk_int_fast32_t; typedef uint_fast64_t duk_uint_fast64_t; typedef int_fast64_t duk_int_fast64_t; typedef uintptr_t duk_uintptr_t; typedef intptr_t duk_intptr_t; typedef uintmax_t duk_uintmax_t; typedef intmax_t duk_intmax_t; #define DUK_UINT8_MIN 0 #define DUK_UINT8_MAX UINT8_MAX #define DUK_INT8_MIN INT8_MIN #define DUK_INT8_MAX INT8_MAX #define DUK_UINT_LEAST8_MIN 0 #define DUK_UINT_LEAST8_MAX UINT_LEAST8_MAX #define DUK_INT_LEAST8_MIN INT_LEAST8_MIN #define DUK_INT_LEAST8_MAX INT_LEAST8_MAX #define DUK_UINT_FAST8_MIN 0 #define DUK_UINT_FAST8_MAX UINT_FAST8_MAX #define DUK_INT_FAST8_MIN INT_FAST8_MIN #define DUK_INT_FAST8_MAX INT_FAST8_MAX #define DUK_UINT16_MIN 0 #define DUK_UINT16_MAX UINT16_MAX #define DUK_INT16_MIN INT16_MIN #define DUK_INT16_MAX INT16_MAX #define DUK_UINT_LEAST16_MIN 0 #define DUK_UINT_LEAST16_MAX UINT_LEAST16_MAX #define DUK_INT_LEAST16_MIN INT_LEAST16_MIN #define DUK_INT_LEAST16_MAX INT_LEAST16_MAX #define DUK_UINT_FAST16_MIN 0 #define DUK_UINT_FAST16_MAX UINT_FAST16_MAX #define DUK_INT_FAST16_MIN INT_FAST16_MIN #define DUK_INT_FAST16_MAX INT_FAST16_MAX #define DUK_UINT32_MIN 0 #define DUK_UINT32_MAX UINT32_MAX #define DUK_INT32_MIN INT32_MIN #define DUK_INT32_MAX INT32_MAX #define DUK_UINT_LEAST32_MIN 0 #define DUK_UINT_LEAST32_MAX UINT_LEAST32_MAX #define DUK_INT_LEAST32_MIN INT_LEAST32_MIN #define DUK_INT_LEAST32_MAX INT_LEAST32_MAX #define DUK_UINT_FAST32_MIN 0 #define DUK_UINT_FAST32_MAX UINT_FAST32_MAX #define DUK_INT_FAST32_MIN INT_FAST32_MIN #define DUK_INT_FAST32_MAX INT_FAST32_MAX #define DUK_UINT64_MIN 0 #define DUK_UINT64_MAX UINT64_MAX #define DUK_INT64_MIN INT64_MIN #define DUK_INT64_MAX INT64_MAX #define DUK_UINT_LEAST64_MIN 0 #define DUK_UINT_LEAST64_MAX UINT_LEAST64_MAX #define DUK_INT_LEAST64_MIN INT_LEAST64_MIN #define DUK_INT_LEAST64_MAX INT_LEAST64_MAX #define DUK_UINT_FAST64_MIN 0 #define DUK_UINT_FAST64_MAX UINT_FAST64_MAX #define DUK_INT_FAST64_MIN INT_FAST64_MIN #define DUK_INT_FAST64_MAX INT_FAST64_MAX #define DUK_UINTPTR_MIN 0 #define DUK_UINTPTR_MAX UINTPTR_MAX #define DUK_INTPTR_MIN INTPTR_MIN #define DUK_INTPTR_MAX INTPTR_MAX #define DUK_UINTMAX_MIN 0 #define DUK_UINTMAX_MAX UINTMAX_MAX #define DUK_INTMAX_MIN INTMAX_MIN #define DUK_INTMAX_MAX INTMAX_MAX #define DUK_SIZE_MIN 0 #define DUK_SIZE_MAX SIZE_MAX #undef DUK_SIZE_MAX_COMPUTED #else /* C99 types */ /* When C99 types are not available, we use heuristic detection to get * the basic 8, 16, 32, and (possibly) 64 bit types. The fast/least * types are then assumed to be exactly the same for now: these could * be improved per platform but C99 types are very often now available. * 64-bit types are not available on all platforms; this is OK at least * on 32-bit platforms. * * This detection code is necessarily a bit hacky and can provide typedefs * and defines that won't work correctly on some exotic platform. */ #if (defined(CHAR_BIT) && (CHAR_BIT == 8)) || \ (defined(UCHAR_MAX) && (UCHAR_MAX == 255)) typedef unsigned char duk_uint8_t; typedef signed char duk_int8_t; #else #error cannot detect 8-bit type #endif #if defined(USHRT_MAX) && (USHRT_MAX == 65535UL) typedef unsigned short duk_uint16_t; typedef signed short duk_int16_t; #elif defined(UINT_MAX) && (UINT_MAX == 65535UL) /* On some platforms int is 16-bit but long is 32-bit (e.g. PureC) */ typedef unsigned int duk_uint16_t; typedef signed int duk_int16_t; #else #error cannot detect 16-bit type #endif #if defined(UINT_MAX) && (UINT_MAX == 4294967295UL) typedef unsigned int duk_uint32_t; typedef signed int duk_int32_t; #elif defined(ULONG_MAX) && (ULONG_MAX == 4294967295UL) /* On some platforms int is 16-bit but long is 32-bit (e.g. PureC) */ typedef unsigned long duk_uint32_t; typedef signed long duk_int32_t; #else #error cannot detect 32-bit type #endif /* 64-bit type detection is a bit tricky. * * ULLONG_MAX is a standard define. __LONG_LONG_MAX__ and __ULONG_LONG_MAX__ * are used by at least GCC (even if system headers don't provide ULLONG_MAX). * Some GCC variants may provide __LONG_LONG_MAX__ but not __ULONG_LONG_MAX__. * * ULL / LL constants are rejected / warned about by some compilers, even if * the compiler has a 64-bit type and the compiler/system headers provide an * unsupported constant (ULL/LL)! Try to avoid using ULL / LL constants. * As a side effect we can only check that e.g. ULONG_MAX is larger than 32 * bits but can't be sure it is exactly 64 bits. Self tests will catch such * cases. */ #undef DUK_F_HAVE_64BIT #if !defined(DUK_F_HAVE_64BIT) && defined(ULONG_MAX) #if (ULONG_MAX > 4294967295UL) #define DUK_F_HAVE_64BIT typedef unsigned long duk_uint64_t; typedef signed long duk_int64_t; #endif #endif #if !defined(DUK_F_HAVE_64BIT) && defined(ULLONG_MAX) #if (ULLONG_MAX > 4294967295UL) #define DUK_F_HAVE_64BIT typedef unsigned long long duk_uint64_t; typedef signed long long duk_int64_t; #endif #endif #if !defined(DUK_F_HAVE_64BIT) && defined(__ULONG_LONG_MAX__) #if (__ULONG_LONG_MAX__ > 4294967295UL) #define DUK_F_HAVE_64BIT typedef unsigned long long duk_uint64_t; typedef signed long long duk_int64_t; #endif #endif #if !defined(DUK_F_HAVE_64BIT) && defined(__LONG_LONG_MAX__) #if (__LONG_LONG_MAX__ > 2147483647L) #define DUK_F_HAVE_64BIT typedef unsigned long long duk_uint64_t; typedef signed long long duk_int64_t; #endif #endif #if !defined(DUK_F_HAVE_64BIT) && \ (defined(DUK_F_MINGW) || defined(DUK_F_MSVC)) /* Both MinGW and MSVC have a 64-bit type. */ #define DUK_F_HAVE_64BIT typedef unsigned long duk_uint64_t; typedef signed long duk_int64_t; #endif #if !defined(DUK_F_HAVE_64BIT) /* cannot detect 64-bit type, not always needed so don't error */ #endif typedef duk_uint8_t duk_uint_least8_t; typedef duk_int8_t duk_int_least8_t; typedef duk_uint16_t duk_uint_least16_t; typedef duk_int16_t duk_int_least16_t; typedef duk_uint32_t duk_uint_least32_t; typedef duk_int32_t duk_int_least32_t; typedef duk_uint8_t duk_uint_fast8_t; typedef duk_int8_t duk_int_fast8_t; typedef duk_uint16_t duk_uint_fast16_t; typedef duk_int16_t duk_int_fast16_t; typedef duk_uint32_t duk_uint_fast32_t; typedef duk_int32_t duk_int_fast32_t; #if defined(DUK_F_HAVE_64BIT) typedef duk_uint64_t duk_uint_least64_t; typedef duk_int64_t duk_int_least64_t; typedef duk_uint64_t duk_uint_fast64_t; typedef duk_int64_t duk_int_fast64_t; #endif #if defined(DUK_F_HAVE_64BIT) typedef duk_uint64_t duk_uintmax_t; typedef duk_int64_t duk_intmax_t; #else typedef duk_uint32_t duk_uintmax_t; typedef duk_int32_t duk_intmax_t; #endif /* Note: the funny looking computations for signed minimum 16-bit, 32-bit, and * 64-bit values are intentional as the obvious forms (e.g. -0x80000000L) are * -not- portable. See code-issues.txt for a detailed discussion. */ #define DUK_UINT8_MIN 0UL #define DUK_UINT8_MAX 0xffUL #define DUK_INT8_MIN (-0x80L) #define DUK_INT8_MAX 0x7fL #define DUK_UINT_LEAST8_MIN 0UL #define DUK_UINT_LEAST8_MAX 0xffUL #define DUK_INT_LEAST8_MIN (-0x80L) #define DUK_INT_LEAST8_MAX 0x7fL #define DUK_UINT_FAST8_MIN 0UL #define DUK_UINT_FAST8_MAX 0xffUL #define DUK_INT_FAST8_MIN (-0x80L) #define DUK_INT_FAST8_MAX 0x7fL #define DUK_UINT16_MIN 0UL #define DUK_UINT16_MAX 0xffffUL #define DUK_INT16_MIN (-0x7fffL - 1L) #define DUK_INT16_MAX 0x7fffL #define DUK_UINT_LEAST16_MIN 0UL #define DUK_UINT_LEAST16_MAX 0xffffUL #define DUK_INT_LEAST16_MIN (-0x7fffL - 1L) #define DUK_INT_LEAST16_MAX 0x7fffL #define DUK_UINT_FAST16_MIN 0UL #define DUK_UINT_FAST16_MAX 0xffffUL #define DUK_INT_FAST16_MIN (-0x7fffL - 1L) #define DUK_INT_FAST16_MAX 0x7fffL #define DUK_UINT32_MIN 0UL #define DUK_UINT32_MAX 0xffffffffUL #define DUK_INT32_MIN (-0x7fffffffL - 1L) #define DUK_INT32_MAX 0x7fffffffL #define DUK_UINT_LEAST32_MIN 0UL #define DUK_UINT_LEAST32_MAX 0xffffffffUL #define DUK_INT_LEAST32_MIN (-0x7fffffffL - 1L) #define DUK_INT_LEAST32_MAX 0x7fffffffL #define DUK_UINT_FAST32_MIN 0UL #define DUK_UINT_FAST32_MAX 0xffffffffUL #define DUK_INT_FAST32_MIN (-0x7fffffffL - 1L) #define DUK_INT_FAST32_MAX 0x7fffffffL /* 64-bit constants. Since LL / ULL constants are not always available, * use computed values. These values can't be used in preprocessor * comparisons; flag them as such. */ #if defined(DUK_F_HAVE_64BIT) #define DUK_UINT64_MIN ((duk_uint64_t) 0) #define DUK_UINT64_MAX ((duk_uint64_t) -1) #define DUK_INT64_MIN ((duk_int64_t) (~(DUK_UINT64_MAX >> 1))) #define DUK_INT64_MAX ((duk_int64_t) (DUK_UINT64_MAX >> 1)) #define DUK_UINT_LEAST64_MIN DUK_UINT64_MIN #define DUK_UINT_LEAST64_MAX DUK_UINT64_MAX #define DUK_INT_LEAST64_MIN DUK_INT64_MIN #define DUK_INT_LEAST64_MAX DUK_INT64_MAX #define DUK_UINT_FAST64_MIN DUK_UINT64_MIN #define DUK_UINT_FAST64_MAX DUK_UINT64_MAX #define DUK_INT_FAST64_MIN DUK_INT64_MIN #define DUK_INT_FAST64_MAX DUK_INT64_MAX #define DUK_UINT64_MIN_COMPUTED #define DUK_UINT64_MAX_COMPUTED #define DUK_INT64_MIN_COMPUTED #define DUK_INT64_MAX_COMPUTED #define DUK_UINT_LEAST64_MIN_COMPUTED #define DUK_UINT_LEAST64_MAX_COMPUTED #define DUK_INT_LEAST64_MIN_COMPUTED #define DUK_INT_LEAST64_MAX_COMPUTED #define DUK_UINT_FAST64_MIN_COMPUTED #define DUK_UINT_FAST64_MAX_COMPUTED #define DUK_INT_FAST64_MIN_COMPUTED #define DUK_INT_FAST64_MAX_COMPUTED #endif #if defined(DUK_F_HAVE_64BIT) #define DUK_UINTMAX_MIN DUK_UINT64_MIN #define DUK_UINTMAX_MAX DUK_UINT64_MAX #define DUK_INTMAX_MIN DUK_INT64_MIN #define DUK_INTMAX_MAX DUK_INT64_MAX #define DUK_UINTMAX_MIN_COMPUTED #define DUK_UINTMAX_MAX_COMPUTED #define DUK_INTMAX_MIN_COMPUTED #define DUK_INTMAX_MAX_COMPUTED #else #define DUK_UINTMAX_MIN 0UL #define DUK_UINTMAX_MAX 0xffffffffUL #define DUK_INTMAX_MIN (-0x7fffffffL - 1L) #define DUK_INTMAX_MAX 0x7fffffffL #endif /* This detection is not very reliable. */ #if defined(DUK_F_32BIT_PTRS) typedef duk_int32_t duk_intptr_t; typedef duk_uint32_t duk_uintptr_t; #define DUK_UINTPTR_MIN DUK_UINT32_MIN #define DUK_UINTPTR_MAX DUK_UINT32_MAX #define DUK_INTPTR_MIN DUK_INT32_MIN #define DUK_INTPTR_MAX DUK_INT32_MAX #elif defined(DUK_F_64BIT_PTRS) && defined(DUK_F_HAVE_64BIT) typedef duk_int64_t duk_intptr_t; typedef duk_uint64_t duk_uintptr_t; #define DUK_UINTPTR_MIN DUK_UINT64_MIN #define DUK_UINTPTR_MAX DUK_UINT64_MAX #define DUK_INTPTR_MIN DUK_INT64_MIN #define DUK_INTPTR_MAX DUK_INT64_MAX #define DUK_UINTPTR_MIN_COMPUTED #define DUK_UINTPTR_MAX_COMPUTED #define DUK_INTPTR_MIN_COMPUTED #define DUK_INTPTR_MAX_COMPUTED #else #error cannot determine intptr type #endif /* SIZE_MAX may be missing so use an approximate value for it. */ #undef DUK_SIZE_MAX_COMPUTED #if !defined(SIZE_MAX) #define DUK_SIZE_MAX_COMPUTED #define SIZE_MAX ((size_t) (-1)) #endif #define DUK_SIZE_MIN 0 #define DUK_SIZE_MAX SIZE_MAX #endif /* C99 types */ /* A few types are assumed to always exist. */ typedef size_t duk_size_t; typedef ptrdiff_t duk_ptrdiff_t; /* The best type for an "all around int" in Duktape internals is "at least * 32 bit signed integer" which is most convenient. Same for unsigned type. * Prefer 'int' when large enough, as it is almost always a convenient type. */ #if defined(UINT_MAX) && (UINT_MAX >= 0xffffffffUL) typedef int duk_int_t; typedef unsigned int duk_uint_t; #define DUK_INT_MIN INT_MIN #define DUK_INT_MAX INT_MAX #define DUK_UINT_MIN 0 #define DUK_UINT_MAX UINT_MAX #else typedef duk_int_fast32_t duk_int_t; typedef duk_uint_fast32_t duk_uint_t; #define DUK_INT_MIN DUK_INT_FAST32_MIN #define DUK_INT_MAX DUK_INT_FAST32_MAX #define DUK_UINT_MIN DUK_UINT_FAST32_MIN #define DUK_UINT_MAX DUK_UINT_FAST32_MAX #endif /* Same as 'duk_int_t' but guaranteed to be a 'fast' variant if this * distinction matters for the CPU. These types are used mainly in the * executor where it might really matter. */ typedef duk_int_fast32_t duk_int_fast_t; typedef duk_uint_fast32_t duk_uint_fast_t; #define DUK_INT_FAST_MIN DUK_INT_FAST32_MIN #define DUK_INT_FAST_MAX DUK_INT_FAST32_MAX #define DUK_UINT_FAST_MIN DUK_UINT_FAST32_MIN #define DUK_UINT_FAST_MAX DUK_UINT_FAST32_MAX /* Small integers (16 bits or more) can fall back to the 'int' type, but * have a typedef so they are marked "small" explicitly. */ typedef int duk_small_int_t; typedef unsigned int duk_small_uint_t; #define DUK_SMALL_INT_MIN INT_MIN #define DUK_SMALL_INT_MAX INT_MAX #define DUK_SMALL_UINT_MIN 0 #define DUK_SMALL_UINT_MAX UINT_MAX /* Fast variants of small integers, again for really fast paths like the * executor. */ typedef duk_int_fast16_t duk_small_int_fast_t; typedef duk_uint_fast16_t duk_small_uint_fast_t; #define DUK_SMALL_INT_FAST_MIN DUK_INT_FAST16_MIN #define DUK_SMALL_INT_FAST_MAX DUK_INT_FAST16_MAX #define DUK_SMALL_UINT_FAST_MIN DUK_UINT_FAST16_MIN #define DUK_SMALL_UINT_FAST_MAX DUK_UINT_FAST16_MAX /* Boolean values are represented with the platform 'int'. */ typedef duk_small_int_t duk_bool_t; #define DUK_BOOL_MIN DUK_SMALL_INT_MIN #define DUK_BOOL_MAX DUK_SMALL_INT_MAX /* Index values must have at least 32-bit signed range. */ typedef duk_int_t duk_idx_t; #define DUK_IDX_MIN DUK_INT_MIN #define DUK_IDX_MAX DUK_INT_MAX /* Unsigned index variant. */ typedef duk_uint_t duk_uidx_t; #define DUK_UIDX_MIN DUK_UINT_MIN #define DUK_UIDX_MAX DUK_UINT_MAX /* Array index values, could be exact 32 bits. * Currently no need for signed duk_arridx_t. */ typedef duk_uint_t duk_uarridx_t; #define DUK_UARRIDX_MIN DUK_UINT_MIN #define DUK_UARRIDX_MAX DUK_UINT_MAX /* Duktape/C function return value, platform int is enough for now to * represent 0, 1, or negative error code. Must be compatible with * assigning truth values (e.g. duk_ret_t rc = (foo == bar);). */ typedef duk_small_int_t duk_ret_t; #define DUK_RET_MIN DUK_SMALL_INT_MIN #define DUK_RET_MAX DUK_SMALL_INT_MAX /* Error codes are represented with platform int. High bits are used * for flags and such, so 32 bits are needed. */ typedef duk_int_t duk_errcode_t; #define DUK_ERRCODE_MIN DUK_INT_MIN #define DUK_ERRCODE_MAX DUK_INT_MAX /* Codepoint type. Must be 32 bits or more because it is used also for * internal codepoints. The type is signed because negative codepoints * are used as internal markers (e.g. to mark EOF or missing argument). * (X)UTF-8/CESU-8 encode/decode take and return an unsigned variant to * ensure duk_uint32_t casts back and forth nicely. Almost everything * else uses the signed one. */ typedef duk_int_t duk_codepoint_t; typedef duk_uint_t duk_ucodepoint_t; #define DUK_CODEPOINT_MIN DUK_INT_MIN #define DUK_CODEPOINT_MAX DUK_INT_MAX #define DUK_UCODEPOINT_MIN DUK_UINT_MIN #define DUK_UCODEPOINT_MAX DUK_UINT_MAX /* IEEE float/double typedef. */ typedef float duk_float_t; typedef double duk_double_t; /* We're generally assuming that we're working on a platform with a 32-bit * address space. If DUK_SIZE_MAX is a typecast value (which is necessary * if SIZE_MAX is missing), the check must be avoided because the * preprocessor can't do a comparison. */ #if !defined(DUK_SIZE_MAX) #error DUK_SIZE_MAX is undefined, probably missing SIZE_MAX #elif !defined(DUK_SIZE_MAX_COMPUTED) #if DUK_SIZE_MAX < 0xffffffffUL /* On some systems SIZE_MAX can be smaller than max unsigned 32-bit value * which seems incorrect if size_t is (at least) an unsigned 32-bit type. * However, it doesn't seem useful to error out compilation if this is the * case. */ #endif #endif /* Type for public API calls. */ typedef struct duk_hthread duk_context; /* * Check whether we should use 64-bit integers */ /* Quite incomplete now. Use 64-bit types if detected (C99 or other detection) * unless they are known to be unreliable. For instance, 64-bit types are * available on VBCC but seem to misbehave. */ #if defined(DUK_F_HAVE_64BIT) && !defined(DUK_F_VBCC) #define DUK_USE_64BIT_OPS #else #undef DUK_USE_64BIT_OPS #endif /* * Alignment requirement and support for unaligned accesses * * Assume unaligned accesses are not supported unless specifically allowed * in the target platform. Some platforms may support unaligned accesses * but alignment to 4 or 8 may still be desirable. */ #undef DUK_USE_UNALIGNED_ACCESSES_POSSIBLE #undef DUK_USE_ALIGN_BY #if defined(DUK_F_EMSCRIPTEN) /* Required on at least some targets, so use whenever Emscripten used, * regardless of compilation target. */ #define DUK_USE_ALIGN_BY 8 #elif defined(DUK_F_ARM) #define DUK_USE_ALIGN_BY 4 #elif defined(DUK_F_MIPS32) /* Based on 'make checkalign' there are no alignment requirements on * Linux MIPS except for doubles, which need align by 4. Alignment * requirements vary based on target though. */ #define DUK_USE_ALIGN_BY 4 #elif defined(DUK_F_MIPS64) /* Good default is a bit arbitrary because alignment requirements * depend on target. See https://github.com/svaarala/duktape/issues/102. */ #define DUK_USE_ALIGN_BY 8 #elif defined(DUK_F_SUPERH) /* Based on 'make checkalign' there are no alignment requirements on * Linux SH4, but align by 4 is probably a good basic default. */ #define DUK_USE_ALIGN_BY 4 #elif defined(DUK_F_X86) || defined(DUK_F_X32) || defined(DUK_F_X64) || \ defined(DUK_F_BCC) /* XXX: This is technically not guaranteed because it's possible to configure * an x86 to require aligned accesses with Alignment Check (AC) flag. */ #define DUK_USE_ALIGN_BY 1 #define DUK_USE_UNALIGNED_ACCESSES_POSSIBLE #else /* Unknown, use safe default */ #define DUK_USE_ALIGN_BY 8 #endif /* User forced alignment to 4 or 8. */ #if defined(DUK_OPT_FORCE_ALIGN) #undef DUK_USE_ALIGN_BY #undef DUK_USE_UNALIGNED_ACCESSES_POSSIBLE #if (DUK_OPT_FORCE_ALIGN == 4) #define DUK_USE_ALIGN_BY 4 #elif (DUK_OPT_FORCE_ALIGN == 8) #define DUK_USE_ALIGN_BY 8 #else #error invalid DUK_OPT_FORCE_ALIGN value #endif #endif /* Compiler specific hackery needed to force struct size to match aligment, * see e.g. duk_hbuffer.h. * * http://stackoverflow.com/questions/11130109/c-struct-size-alignment * http://stackoverflow.com/questions/10951039/specifying-64-bit-alignment */ #if defined(DUK_F_MSVC) #define DUK_USE_PACK_MSVC_PRAGMA #elif defined(DUK_F_GCC) #define DUK_USE_PACK_GCC_ATTR #elif defined(DUK_F_CLANG) #define DUK_USE_PACK_CLANG_ATTR #else #define DUK_USE_PACK_DUMMY_MEMBER #endif #ifdef DUK_USE_UNALIGNED_ACCESSES_POSSIBLE #define DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS #else #undef DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS #endif /* Object property allocation layout has implications for memory and code * footprint and generated code size/speed. The best layout also depends * on whether the platform has alignment requirements or benefits from * having mostly aligned accesses. */ #undef DUK_USE_HOBJECT_LAYOUT_1 #undef DUK_USE_HOBJECT_LAYOUT_2 #undef DUK_USE_HOBJECT_LAYOUT_3 #if defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE) && (DUK_USE_ALIGN_BY == 1) /* On platforms without any alignment issues, layout 1 is preferable * because it compiles to slightly less code and provides direct access * to property keys. */ #define DUK_USE_HOBJECT_LAYOUT_1 #else /* On other platforms use layout 2, which requires some padding but * is a bit more natural than layout 3 in ordering the entries. Layout * 3 is currently not used. */ #define DUK_USE_HOBJECT_LAYOUT_2 #endif /* * Byte order and double memory layout detection * * Endianness detection is a major portability hassle because the macros * and headers are not standardized. There's even variance across UNIX * platforms. Even with "standard" headers, details like underscore count * varies between platforms, e.g. both __BYTE_ORDER and _BYTE_ORDER are used * (Crossbridge has a single underscore, for instance). * * The checks below are structured with this in mind: several approaches are * used, and at the end we check if any of them worked. This allows generic * approaches to be tried first, and platform/compiler specific hacks tried * last. As a last resort, the user can force a specific endianness, as it's * not likely that automatic detection will work on the most exotic platforms. * * Duktape supports little and big endian machines. There's also support * for a hybrid used by some ARM machines where integers are little endian * but IEEE double values use a mixed order (12345678 -> 43218765). This * byte order for doubles is referred to as "mixed endian". */ #undef DUK_F_BYTEORDER #undef DUK_USE_BYTEORDER_FORCED /* DUK_F_BYTEORDER is set as an intermediate value when detection * succeeds, to one of: * 1 = little endian * 2 = mixed (arm hybrid) endian * 3 = big endian */ /* For custom platforms allow user to define byteorder explicitly. * Since endianness headers are not standardized, this is a useful * workaround for custom platforms for which endianness detection * is not directly supported. Perhaps custom hardware is used and * user cannot submit upstream patches. */ #if defined(DUK_OPT_FORCE_BYTEORDER) #if (DUK_OPT_FORCE_BYTEORDER == 1) #define DUK_F_BYTEORDER 1 #elif (DUK_OPT_FORCE_BYTEORDER == 2) #define DUK_F_BYTEORDER 2 #elif (DUK_OPT_FORCE_BYTEORDER == 3) #define DUK_F_BYTEORDER 3 #else #error invalid DUK_OPT_FORCE_BYTEORDER value #endif #define DUK_USE_BYTEORDER_FORCED #endif /* DUK_OPT_FORCE_BYTEORDER */ /* More or less standard endianness predefines provided by header files. * The ARM hybrid case is detected by assuming that __FLOAT_WORD_ORDER * will be big endian, see: http://lists.mysql.com/internals/443. */ #if !defined(DUK_F_BYTEORDER) #if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && (__BYTE_ORDER == __LITTLE_ENDIAN) || \ defined(_BYTE_ORDER) && defined(_LITTLE_ENDIAN) && (_BYTE_ORDER == _LITTLE_ENDIAN) || \ defined(__LITTLE_ENDIAN__) /* Integer little endian */ #if defined(__FLOAT_WORD_ORDER) && defined(__LITTLE_ENDIAN) && (__FLOAT_WORD_ORDER == __LITTLE_ENDIAN) || \ defined(_FLOAT_WORD_ORDER) && defined(_LITTLE_ENDIAN) && (_FLOAT_WORD_ORDER == _LITTLE_ENDIAN) #define DUK_F_BYTEORDER 1 #elif defined(__FLOAT_WORD_ORDER) && defined(__BIG_ENDIAN) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN) || \ defined(_FLOAT_WORD_ORDER) && defined(_BIG_ENDIAN) && (_FLOAT_WORD_ORDER == _BIG_ENDIAN) #define DUK_F_BYTEORDER 2 #elif !defined(__FLOAT_WORD_ORDER) && !defined(_FLOAT_WORD_ORDER) /* Float word order not known, assume not a hybrid. */ #define DUK_F_BYTEORDER 1 #else /* byte order is little endian but cannot determine IEEE double word order */ #endif /* float word order */ #elif defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && (__BYTE_ORDER == __BIG_ENDIAN) || \ defined(_BYTE_ORDER) && defined(_BIG_ENDIAN) && (_BYTE_ORDER == _BIG_ENDIAN) || \ defined(__BIG_ENDIAN__) /* Integer big endian */ #if defined(__FLOAT_WORD_ORDER) && defined(__BIG_ENDIAN) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN) || \ defined(_FLOAT_WORD_ORDER) && defined(_BIG_ENDIAN) && (_FLOAT_WORD_ORDER == _BIG_ENDIAN) #define DUK_F_BYTEORDER 3 #elif !defined(__FLOAT_WORD_ORDER) && !defined(_FLOAT_WORD_ORDER) /* Float word order not known, assume not a hybrid. */ #define DUK_F_BYTEORDER 3 #else /* byte order is big endian but cannot determine IEEE double word order */ #endif /* float word order */ #else /* cannot determine byte order */ #endif /* integer byte order */ #endif /* !defined(DUK_F_BYTEORDER) */ /* GCC and Clang provide endianness defines as built-in predefines, with * leading and trailing double underscores (e.g. __BYTE_ORDER__). See * output of "make gccpredefs" and "make clangpredefs". Clang doesn't * seem to provide __FLOAT_WORD_ORDER__. * http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html */ #if !defined(DUK_F_BYTEORDER) && defined(__BYTE_ORDER__) #if defined(__ORDER_LITTLE_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) /* Integer little endian */ #if defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \ (__FLOAT_WORD_ORDER__ == __ORDER_LITTLE_ENDIAN__) #define DUK_F_BYTEORDER 1 #elif defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \ (__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__) #define DUK_F_BYTEORDER 2 #elif !defined(__FLOAT_WORD_ORDER__) /* Float word order not known, assume not a hybrid. */ #define DUK_F_BYTEORDER 1 #else /* byte order is little endian but cannot determine IEEE double word order */ #endif /* float word order */ #elif defined(__ORDER_BIG_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) /* Integer big endian */ #if defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \ (__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__) #define DUK_F_BYTEORDER 3 #elif !defined(__FLOAT_WORD_ORDER__) /* Float word order not known, assume not a hybrid. */ #define DUK_F_BYTEORDER 3 #else /* byte order is big endian but cannot determine IEEE double word order */ #endif /* float word order */ #else /* cannot determine byte order; __ORDER_PDP_ENDIAN__ is related to 32-bit * integer ordering and is not relevant */ #endif /* integer byte order */ #endif /* !defined(DUK_F_BYTEORDER) && defined(__BYTE_ORDER__) */ /* Atari ST TOS */ #if !defined(DUK_F_BYTEORDER) && defined(DUK_F_TOS) #define DUK_F_BYTEORDER 3 #endif /* AmigaOS on M68K or PPC */ #if !defined(DUK_F_BYTEORDER) && defined(DUK_F_AMIGAOS) #if defined(DUK_F_M68K) || defined(DUK_F_PPC) #define DUK_F_BYTEORDER 3 #endif #endif /* On Windows, assume we're little endian. Even Itanium which has a * configurable endianness runs little endian in Windows. */ #if !defined(DUK_F_BYTEORDER) && defined(DUK_F_WINDOWS) /* XXX: verify that Windows on ARM is little endian for floating point * values too. */ #define DUK_F_BYTEORDER 1 #endif /* Windows */ /* Crossbridge should work with the standard byteorder #ifdefs. It doesn't * provide _FLOAT_WORD_ORDER but the standard approach now covers that case * too. This has been left here just in case. */ #if !defined(DUK_F_BYTEORDER) && defined(DUK_F_FLASHPLAYER) #define DUK_F_BYTEORDER 1 #endif /* QNX gcc cross compiler seems to define e.g. __LITTLEENDIAN__ or __BIGENDIAN__: * $ /opt/qnx650/host/linux/x86/usr/bin/i486-pc-nto-qnx6.5.0-gcc -dM -E - * | 0 | 1 | 2 | ..... * ^-- p=3, points after last valid byte (2) * * If this is a practical issue, wrappers are again needed. */ typedef FILE duk_file; #define DUK_STDIN stdin #define DUK_STDOUT stdout #define DUK_STDERR stderr /* Special naming to avoid conflict with e.g. DUK_FREE() in duk_heap.h * (which is unfortunately named). */ #define DUK_ANSI_MALLOC malloc #define DUK_ANSI_REALLOC realloc #define DUK_ANSI_CALLOC calloc #define DUK_ANSI_FREE free /* Old uclibcs have a broken memcpy so use memmove instead (this is overly * wide now on purpose): * http://lists.uclibc.org/pipermail/uclibc-cvs/2008-October/025511.html */ #if defined(DUK_F_UCLIBC) #define DUK_MEMCPY memmove #else #define DUK_MEMCPY memcpy #endif #define DUK_MEMMOVE memmove #define DUK_MEMCMP memcmp #define DUK_MEMSET memset #define DUK_STRLEN strlen #define DUK_STRCMP strcmp #define DUK_STRNCMP strncmp #define DUK_PRINTF printf #define DUK_FPRINTF fprintf #define DUK_SPRINTF sprintf #if defined(DUK_F_MSVC) /* _snprintf() does NOT NUL terminate on truncation, but Duktape code never * assumes that. * http://stackoverflow.com/questions/2915672/snprintf-and-visual-studio-2010 */ #define DUK_SNPRINTF _snprintf #else #define DUK_SNPRINTF snprintf #endif #define DUK_VSPRINTF vsprintf #if defined(DUK_F_MSVC) #if (_MSC_VER < 1600) /* Older MSVC version are missing vsnprintf() but have _vsnprintf(). */ #define DUK_VSNPRINTF _vsnprintf #else #define DUK_VSNPRINTF vsnprintf #endif #else #define DUK_VSNPRINTF vsnprintf #endif /* DUK_F_MSVC */ #define DUK_SSCANF sscanf #define DUK_VSSCANF vsscanf #define DUK_FOPEN fopen #define DUK_FCLOSE fclose #define DUK_FREAD fread #define DUK_FWRITE fwrite #define DUK_FSEEK fseek #define DUK_FTELL ftell #define DUK_FFLUSH fflush #define DUK_FPUTC fputc #define DUK_MEMZERO(p,n) \ DUK_MEMSET((p), 0, (n)) /* * Vararg macro wrappers. We need va_copy() which is defined in C99 / C++11, * so an awkward replacement is needed for pre-C99 / pre-C++11 environments. * This will quite likely need portability hacks for some non-C99 environments. */ #if defined(DUK_F_C99) || defined(DUK_F_CPP11) /* C99 / C++11 and above: rely on va_copy() which is required. * Omit parenthesis on macro right side on purpose to minimize differences * to direct use. */ #define DUK_VA_COPY(dest,src) va_copy(dest,src) #elif defined(DUK_F_GCC) || defined(DUK_F_CLANG) /* GCC: assume we have __va_copy() in non-C99 mode, which should be correct * for even quite old GCC versions. Clang matches GCC behavior. */ #define DUK_VA_COPY(dest,src) __va_copy(dest,src) #else /* Pre-C99: va_list type is implementation dependent. This replacement * assumes it is a plain value so that a simple assignment will work. * This is not the case on all platforms (it may be a single-array element, * for instance). */ #define DUK_VA_COPY(dest,src) do { (dest) = (src); } while (0) #endif /* * Miscellaneous ANSI C or other platform wrappers. */ #define DUK_ABORT abort #define DUK_EXIT exit /* * Avoiding platform function pointers. * * On some platforms built-in functions may be implemented as macros or * inline functions, so they can't be necessarily addressed by function * pointers. This is certainly the case with some platform "polyfills" * which provide missing C99/C++11 functions through macros, and may be * the case with VS2013 (see GH-17). */ /* This is now the default: the cost in footprint is negligible. */ #define DUK_USE_AVOID_PLATFORM_FUNCPTRS /* * Macro hackery to convert e.g. __LINE__ to a string without formatting, * see: http://stackoverflow.com/questions/240353/convert-a-preprocessor-token-to-a-string */ #define DUK_F_STRINGIFY_HELPER(x) #x #define DUK_MACRO_STRINGIFY(x) DUK_F_STRINGIFY_HELPER(x) /* * Cause segfault macro. * * This is optionally used by panic handling to cause the program to segfault * (instead of e.g. abort()) on panic. Valgrind will then indicate the C * call stack leading to the panic. */ #define DUK_CAUSE_SEGFAULT() do { \ *((volatile duk_uint32_t *) NULL) = (duk_uint32_t) 0xdeadbeefUL; \ } while (0) /* * Macro for suppressing warnings for potentially unreferenced variables. * The variables can be actually unreferenced or unreferenced in some * specific cases only; for instance, if a variable is only debug printed, * it is unreferenced when debug printing is disabled. * * (Introduced here because it's potentially compiler specific.) */ #define DUK_UNREF(x) do { \ (void) (x); \ } while (0) /* * DUK_NORETURN: macro for declaring a 'noreturn' function. * Unfortunately the noreturn declaration may appear in various * places of a function declaration, so the solution is to wrap * the entire declaration inside the macro. Compiler support * for using a noreturn declaration on function pointers varies; * this macro must only be used for actual function declarations. * * http://gcc.gnu.org/onlinedocs/gcc-4.3.2//gcc/Function-Attributes.html * http://clang.llvm.org/docs/LanguageExtensions.html */ #if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 20500L) /* since gcc-2.5 */ #define DUK_NORETURN(decl) decl __attribute__((noreturn)) #elif defined(__clang__) /* syntax same as gcc */ #define DUK_NORETURN(decl) decl __attribute__((noreturn)) #elif defined(DUK_F_MSVC) /* http://msdn.microsoft.com/en-us/library/aa235362(VS.60).aspx */ #define DUK_NORETURN(decl) __declspec(noreturn) decl #else /* Don't know how to declare a noreturn function, so don't do it; this * may cause some spurious compilation warnings (e.g. "variable used * uninitialized"). */ #define DUK_NORETURN(decl) decl #endif /* * Macro for stating that a certain line cannot be reached. * * http://gcc.gnu.org/onlinedocs/gcc-4.5.0/gcc/Other-Builtins.html#Other-Builtins * http://clang.llvm.org/docs/LanguageExtensions.html */ #if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40500L) /* since gcc-4.5 */ #define DUK_UNREACHABLE() do { __builtin_unreachable(); } while(0) #elif defined(__clang__) && defined(__has_builtin) #if __has_builtin(__builtin_unreachable) /* same as gcc */ #define DUK_UNREACHABLE() do { __builtin_unreachable(); } while(0) #endif #else /* unknown */ #endif #if !defined(DUK_UNREACHABLE) /* Don't know how to declare unreachable point, so don't do it; this * may cause some spurious compilation warnings (e.g. "variable used * uninitialized"). */ #define DUK_UNREACHABLE() /* unreachable */ #endif /* * Likely and unlikely branches. Using these is not at all a clear cut case, * so the selection is a two-step process: (1) DUK_USE_BRANCH_HINTS is set * if the architecture, compiler etc make it useful to use the hints, and (2) * a separate check determines how to do them. * * These macros expect the argument to be a relational expression with an * integer value. If used with pointers, you should use an explicit check * like: * * if (DUK_LIKELY(ptr != NULL)) { ... } * * instead of: * * if (DUK_LIKELY(ptr)) { ... } * * http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html (__builtin_expect) */ /* pretty much a placeholder now */ #if defined(DUK_F_GCC) #define DUK_USE_BRANCH_HINTS #elif defined(DUK_F_CLANG) #define DUK_USE_BRANCH_HINTS #else #undef DUK_USE_BRANCH_HINTS #endif #if defined(DUK_USE_BRANCH_HINTS) #if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40500L) /* GCC: test not very accurate; enable only in relatively recent builds * because of bugs in gcc-4.4 (http://lists.debian.org/debian-gcc/2010/04/msg00000.html) */ #define DUK_LIKELY(x) __builtin_expect((x), 1) #define DUK_UNLIKELY(x) __builtin_expect((x), 0) #elif defined(DUK_F_CLANG) #define DUK_LIKELY(x) __builtin_expect((x), 1) #define DUK_UNLIKELY(x) __builtin_expect((x), 0) #endif #endif /* DUK_USE_BRANCH_HINTS */ #if !defined(DUK_LIKELY) #define DUK_LIKELY(x) (x) #endif #if !defined(DUK_UNLIKELY) #define DUK_UNLIKELY(x) (x) #endif /* * Function inlining control * * DUK_NOINLINE: avoid inlining a function. * DUK_INLINE: suggest inlining a function. * DUK_ALWAYS_INLINE: force inlining for critical functions. * * Apply to function definition only (not declaration). */ #if defined(DUK_F_CLANG) && (defined(DUK_F_C99) || defined(DUK_F_CPP11)) #define DUK_NOINLINE __attribute__((noinline)) #define DUK_INLINE inline #define DUK_ALWAYS_INLINE inline __attribute__((always_inline)) #elif defined(DUK_F_GCC) && defined(DUK_F_GCC_VERSION) && (defined(DUK_F_C99) || defined(DUK_F_CPP11)) #if (DUK_F_GCC_VERSION >= 30101) #define DUK_NOINLINE __attribute__((noinline)) #define DUK_INLINE inline #define DUK_ALWAYS_INLINE inline __attribute__((always_inline)) #endif #endif #if !defined(DUK_NOINLINE) #define DUK_NOINLINE /*nop*/ #define DUK_INLINE /*nop*/ #define DUK_ALWAYS_INLINE /*nop*/ #endif /* Temporary workaround for GH-323: avoid inlining control when * compiling from multiple sources, as it causes compiler trouble. */ #if !defined(DUK_SINGLE_FILE) #undef DUK_NOINLINE #undef DUK_INLINE #undef DUK_ALWAYS_INLINE #define DUK_NOINLINE /*nop*/ #define DUK_INLINE /*nop*/ #define DUK_ALWAYS_INLINE /*nop*/ #endif /* * Symbol visibility macros * * To avoid C++ declaration issues (see GH-63): * * - Don't use DUK_LOCAL_DECL for local -data symbols- so that you don't * end up with both a "static" declaration and a definition. * * - Wrap any DUK_INTERNAL_DECL with a '#if !defined(DUK_SINGLE_FILE)' * so that the internal declarations (which would map to "static" in * a single file distribution) get dropped. */ /* XXX: user override for these? user override for just using the default visibility macros? */ /* XXX: separate macros for function and data may be necessary at some point. */ #if defined(DUK_F_GCC_VERSION) #if (DUK_F_GCC_VERSION >= 40000) && !(defined(DUK_F_MINGW) || defined(DUK_F_CYGWIN)) /* Might work on earlier versions too but limit to GCC 4+. * MinGW should use Windows specific __declspec or no visibility attributes at all, * otherwise: "warning: visibility attribute not supported in this configuration; ignored". * Same applies to Cygwin GCC. */ #define DUK_F_GCC_SYMBOL_VISIBILITY #endif #endif #if defined(DUK_F_CLANG) && !defined(DUK_F_GCC_SYMBOL_VISIBILITY) #define DUK_F_GCC_SYMBOL_VISIBILITY #endif #if defined(DUK_OPT_DLL_BUILD) && defined(_WIN32) && (defined(_MSC_VER) || defined(__GNUC__)) /* __declspec(dllexport) and __declspec(dllimport) only for Windows DLL build. * MSVC: any minimum version? * MinGW: no minimum version, even gcc-2.95.3 supported dllimport/dllexport. */ #define DUK_F_MSVC_DLL_SYMBOL_VISIBILITY #endif #if defined(DUK_F_GCC_SYMBOL_VISIBILITY) /* GCC 4+ visibility attributes. */ #define DUK_EXTERNAL_DECL __attribute__ ((visibility("default"))) extern #define DUK_EXTERNAL __attribute__ ((visibility("default"))) #if defined(DUK_SINGLE_FILE) #define DUK_INTERNAL_DECL static #define DUK_INTERNAL static #else #define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) extern #define DUK_INTERNAL __attribute__ ((visibility("hidden"))) #endif #elif defined(DUK_F_MSVC_DLL_SYMBOL_VISIBILITY) /* MSVC dllexport/dllimport: appropriate __declspec depends on whether we're * compiling Duktape or the application. */ #if defined(DUK_COMPILING_DUKTAPE) #define DUK_EXTERNAL_DECL extern __declspec(dllexport) #define DUK_EXTERNAL __declspec(dllexport) #else #define DUK_EXTERNAL_DECL extern __declspec(dllimport) #define DUK_EXTERNAL should_not_happen #endif #if defined(DUK_SINGLE_FILE) #define DUK_INTERNAL_DECL static #define DUK_INTERNAL static #else #define DUK_INTERNAL_DECL extern #define DUK_INTERNAL /*empty*/ #endif #else /* Default visibility. */ #define DUK_EXTERNAL_DECL extern #define DUK_EXTERNAL /*empty*/ #if defined(DUK_SINGLE_FILE) #define DUK_INTERNAL_DECL static #define DUK_INTERNAL static #else /* DUK_SINGLE_FILE */ #define DUK_INTERNAL_DECL extern #define DUK_INTERNAL /*empty*/ #endif #endif /* For now, these are shared. */ #define DUK_LOCAL_DECL static #define DUK_LOCAL static /* * __FILE__, __LINE__, __func__ are wrapped. Especially __func__ is a * problem because it is not available even in some compilers which try * to be C99 compatible (e.g. VBCC with -c99 option). */ #define DUK_FILE_MACRO __FILE__ #define DUK_LINE_MACRO __LINE__ #if !defined(DUK_F_VBCC) && !defined(DUK_F_MSVC) #define DUK_FUNC_MACRO __func__ #else #define DUK_FUNC_MACRO "unknown" #endif /* * Byteswap macros * * These are here so that inline assembly or other platform functions can be * used if available. */ #define DUK_BSWAP32(x) \ ((((duk_uint32_t) (x)) >> 24) | \ ((((duk_uint32_t) (x)) >> 8) & 0xff00UL) | \ ((((duk_uint32_t) (x)) << 8) & 0xff0000UL) | \ (((duk_uint32_t) (x)) << 24)) #define DUK_BSWAP16(x) \ ((duk_uint16_t) (x) >> 8) | \ ((duk_uint16_t) (x) << 8) /* * Architecture string, human readable value exposed in Duktape.env */ #if defined(DUK_F_X86) #define DUK_USE_ARCH_STRING "x86" #elif defined(DUK_F_X32) #define DUK_USE_ARCH_STRING "x32" #elif defined(DUK_F_X64) #define DUK_USE_ARCH_STRING "x64" #elif defined(DUK_F_ARM) #define DUK_USE_ARCH_STRING "arm" #elif defined(DUK_F_MIPS32) #define DUK_USE_ARCH_STRING "mips32" #elif defined(DUK_F_MIPS64) #define DUK_USE_ARCH_STRING "mips64" #elif defined(DUK_F_SUPERH) #define DUK_USE_ARCH_STRING "sh" #elif defined(DUK_F_PPC) #define DUK_USE_ARCH_STRING "ppc" #elif defined(DUK_F_M68K) #define DUK_USE_ARCH_STRING "m68k" #elif defined(DUK_F_FLASHPLAYER) #define DUK_USE_ARCH_STRING "flashplayer" #elif defined(DUK_F_EMSCRIPTEN) #define DUK_USE_ARCH_STRING "emscripten" #else #define DUK_USE_ARCH_STRING "unknown" #endif /* * OS string, human readable value exposed in Duktape.env */ #if defined(DUK_F_LINUX) #define DUK_USE_OS_STRING "linux" #elif defined(__APPLE__) /* http://stackoverflow.com/questions/5919996/how-to-detect-reliably-mac-os-x-ios-linux-windows-in-c-preprocessor */ #if TARGET_IPHONE_SIMULATOR #define DUK_USE_OS_STRING "iphone-sim" #elif TARGET_OS_IPHONE #define DUK_USE_OS_STRING "iphone" #elif TARGET_OS_MAC #define DUK_USE_OS_STRING "ios" #else #define DUK_USE_OS_STRING "ios-unknown" #endif #elif defined(DUK_F_FREEBSD) #define DUK_USE_OS_STRING "freebsd" #elif defined(DUK_F_OPENBSD) #define DUK_USE_OS_STRING "openbsd" #elif defined(DUK_F_NETBSD) #define DUK_USE_OS_STRING "netbsd" #elif defined(DUK_F_BSD) #define DUK_USE_OS_STRING "bsd" #elif defined(DUK_F_UNIX) #define DUK_USE_OS_STRING "unix" #elif defined(DUK_F_WINDOWS) #define DUK_USE_OS_STRING "windows" #elif defined(DUK_F_TOS) #define DUK_USE_OS_STRING "tos" #elif defined(DUK_F_AMIGAOS) #define DUK_USE_OS_STRING "amigaos" #elif defined(DUK_F_QNX) #define DUK_USE_OS_STRING "qnx" #elif defined(DUK_F_TINSPIRE) #define DUK_USE_OS_STRING "tinspire" #else #define DUK_USE_OS_STRING "unknown" #endif /* * Compiler string, human readable value exposed in Duktape.env */ #if defined(DUK_F_MINGW) #define DUK_USE_COMPILER_STRING "mingw" #elif defined(DUK_F_GCC) #if defined(DUK_F_CPP) #define DUK_USE_COMPILER_STRING "g++" #else #define DUK_USE_COMPILER_STRING "gcc" #endif #elif defined(DUK_F_CLANG) #define DUK_USE_COMPILER_STRING "clang" #elif defined(DUK_F_MSVC) #define DUK_USE_COMPILER_STRING "msvc" #elif defined(DUK_F_VBCC) #define DUK_USE_COMPILER_STRING "vbcc" #else #define DUK_USE_COMPILER_STRING "unknown" #endif /* * Target info string */ #if defined(DUK_OPT_TARGET_INFO) #define DUK_USE_TARGET_INFO DUK_OPT_TARGET_INFO #else #define DUK_USE_TARGET_INFO "unknown" #endif /* * Long control transfer, setjmp/longjmp or alternatives * * Signal mask is not saved (when that can be communicated to the platform) */ /* dummy non-zero value to be used as an argument for longjmp(), see man longjmp */ #define DUK_LONGJMP_DUMMY_VALUE 1 #if defined(DUK_OPT_SETJMP) #define DUK_USE_SETJMP #elif defined(DUK_OPT_UNDERSCORE_SETJMP) #define DUK_USE_UNDERSCORE_SETJMP #elif defined(DUK_OPT_SIGSETJMP) #define DUK_USE_SIGSETJMP #elif defined(__APPLE__) /* Use _setjmp() on Apple by default, see GH-55. */ #define DUK_USE_UNDERSCORE_SETJMP #else /* The most portable default is setjmp(). */ #define DUK_USE_SETJMP #endif #if defined(DUK_USE_UNDERSCORE_SETJMP) #define DUK_SETJMP(jb) _setjmp((jb)) #define DUK_LONGJMP(jb) _longjmp((jb), DUK_LONGJMP_DUMMY_VALUE) #elif defined(DUK_USE_SIGSETJMP) #define DUK_SETJMP(jb) sigsetjmp((jb), 0 /*savesigs*/) #define DUK_LONGJMP(jb) siglongjmp((jb), DUK_LONGJMP_DUMMY_VALUE) #elif defined(DUK_USE_SETJMP) #define DUK_SETJMP(jb) setjmp((jb)) #define DUK_LONGJMP(jb) longjmp((jb), DUK_LONGJMP_DUMMY_VALUE) #else #error internal error #endif /* * Speed/size and other performance options */ /* Use fast ("inline") refcount operations instead of calling out to helpers * by default. The difference in binary size is small (~1kB on x64). */ #define DUK_USE_FAST_REFCOUNT_DEFAULT /* Assert for valstack space but don't check for it in non-assert build. * Valstack overruns (writing beyond checked space) is memory unsafe and * potentially a segfault. Produces a smaller and faster binary. * (In practice the speed difference is small with -O3 so default to * safer behavior for now.) */ #undef DUK_USE_VALSTACK_UNSAFE /* Catch-all flag which can be used to choose between variant algorithms * where a speed-size tradeoff exists (e.g. lookup tables). When it really * matters, specific use flags may be appropriate. */ #undef DUK_USE_PREFER_SIZE /* Use a sliding window for lexer; slightly larger footprint, slightly faster. */ #define DUK_USE_LEXER_SLIDING_WINDOW /* Transparent JSON.stringify() fastpath. */ #undef DUK_USE_JSON_STRINGIFY_FASTPATH #if defined(DUK_OPT_JSON_STRINGIFY_FASTPATH) #define DUK_USE_JSON_STRINGIFY_FASTPATH #endif /* * Tagged type representation (duk_tval) */ #undef DUK_USE_PACKED_TVAL #undef DUK_USE_FULL_TVAL #if defined(DUK_USE_PACKED_TVAL_POSSIBLE) && !defined(DUK_OPT_NO_PACKED_TVAL) #define DUK_USE_PACKED_TVAL #endif /* Support for 48-bit signed integer duk_tval with transparent semantics. */ #undef DUK_USE_FASTINT #if defined(DUK_OPT_FASTINT) #if !defined(DUK_F_HAVE_64BIT) #error DUK_OPT_FASTINT requires 64-bit integer type support at the moment #endif #define DUK_USE_FASTINT #endif /* * Memory management options */ #define DUK_USE_REFERENCE_COUNTING #define DUK_USE_DOUBLE_LINKED_HEAP #define DUK_USE_MARK_AND_SWEEP #define DUK_USE_MS_STRINGTABLE_RESIZE #if defined(DUK_OPT_NO_REFERENCE_COUNTING) #undef DUK_USE_REFERENCE_COUNTING #undef DUK_USE_DOUBLE_LINKED_HEAP /* XXX: undef DUK_USE_MS_STRINGTABLE_RESIZE as it is more expensive * with more frequent mark-and-sweeps? */ #endif #if defined(DUK_OPT_NO_MARK_AND_SWEEP) #undef DUK_USE_MARK_AND_SWEEP #endif #if defined(DUK_USE_MARK_AND_SWEEP) #define DUK_USE_VOLUNTARY_GC #if defined(DUK_OPT_NO_VOLUNTARY_GC) #undef DUK_USE_VOLUNTARY_GC #endif #endif #if !defined(DUK_USE_MARK_AND_SWEEP) && !defined(DUK_USE_REFERENCE_COUNTING) #error must have either mark-and-sweep or reference counting enabled #endif #if defined(DUK_OPT_NO_MS_STRINGTABLE_RESIZE) #undef DUK_USE_MS_STRINGTABLE_RESIZE #endif #undef DUK_USE_GC_TORTURE #if defined(DUK_OPT_GC_TORTURE) #define DUK_USE_GC_TORTURE #endif /* * String table options */ #if defined(DUK_OPT_STRTAB_CHAIN) && defined(DUK_OPT_STRTAB_CHAIN_SIZE) /* Low memory algorithm: separate chaining using arrays, fixed size hash */ #define DUK_USE_STRTAB_CHAIN #define DUK_USE_STRTAB_CHAIN_SIZE DUK_OPT_STRTAB_CHAIN_SIZE #else /* Default algorithm: open addressing (probing) */ #define DUK_USE_STRTAB_PROBE #endif /* * Error handling options */ #define DUK_USE_AUGMENT_ERROR_CREATE #define DUK_USE_AUGMENT_ERROR_THROW #define DUK_USE_TRACEBACKS #define DUK_USE_ERRCREATE #define DUK_USE_ERRTHROW #define DUK_USE_VERBOSE_ERRORS #if defined(DUK_OPT_NO_AUGMENT_ERRORS) #undef DUK_USE_AUGMENT_ERROR_CREATE #undef DUK_USE_AUGMENT_ERROR_THROW #undef DUK_USE_TRACEBACKS #undef DUK_USE_ERRCREATE #undef DUK_USE_ERRTHROW #elif defined(DUK_OPT_NO_TRACEBACKS) #undef DUK_USE_TRACEBACKS #endif #if defined(DUK_OPT_NO_VERBOSE_ERRORS) #undef DUK_USE_VERBOSE_ERRORS #endif #if defined(DUK_USE_TRACEBACKS) #if defined(DUK_OPT_TRACEBACK_DEPTH) #define DUK_USE_TRACEBACK_DEPTH DUK_OPT_TRACEBACK_DEPTH #else #define DUK_USE_TRACEBACK_DEPTH 10 #endif #endif /* Include messages in executor internal errors. */ #define DUK_USE_VERBOSE_EXECUTOR_ERRORS /* * Execution and debugger options */ #undef DUK_USE_INTERRUPT_COUNTER #if defined(DUK_OPT_INTERRUPT_COUNTER) #define DUK_USE_INTERRUPT_COUNTER #endif #undef DUK_USE_EXEC_TIMEOUT_CHECK #if defined(DUK_OPT_EXEC_TIMEOUT_CHECK) #define DUK_USE_EXEC_TIMEOUT_CHECK(udata) DUK_OPT_EXEC_TIMEOUT_CHECK((udata)) #endif #undef DUK_USE_DEBUGGER_SUPPORT #if defined(DUK_OPT_DEBUGGER_SUPPORT) #define DUK_USE_DEBUGGER_SUPPORT #endif #undef DUK_USE_DEBUGGER_FWD_PRINTALERT #if defined(DUK_OPT_DEBUGGER_SUPPORT) && defined(DUK_OPT_DEBUGGER_FWD_PRINTALERT) #define DUK_USE_DEBUGGER_FWD_PRINTALERT #endif #undef DUK_USE_DEBUGGER_FWD_LOGGING #if defined(DUK_OPT_DEBUGGER_SUPPORT) && defined(DUK_OPT_DEBUGGER_FWD_LOGGING) #define DUK_USE_DEBUGGER_FWD_LOGGING #endif /* DumpHeap is optional because it's not always needed and has a relatively * large footprint. */ #undef DUK_USE_DEBUGGER_DUMPHEAP #if defined(DUK_OPT_DEBUGGER_DUMPHEAP) #define DUK_USE_DEBUGGER_DUMPHEAP #endif #define DUK_USE_DEBUGGER_THROW_NOTIFY #if defined(DUK_OPT_NO_DEBUGGER_THROW_NOTIFY) #undef DUK_USE_DEBUGGER_THROW_NOTIFY #endif #undef DUK_USE_DEBUGGER_PAUSE_UNCAUGHT #if defined(DUK_OPT_DEBUGGER_PAUSE_UNCAUGHT) #define DUK_USE_DEBUGGER_PAUSE_UNCAUGHT #endif /* Debugger transport read/write torture. */ #undef DUK_USE_DEBUGGER_TRANSPORT_TORTURE #if defined(DUK_OPT_DEBUGGER_TRANSPORT_TORTURE) #define DUK_USE_DEBUGGER_TRANSPORT_TORTURE #endif /* For opcodes with indirect indices, check final index against stack size. * This should not be necessary because the compiler is trusted, and we don't * bound check non-indirect indices either. */ #undef DUK_USE_EXEC_INDIRECT_BOUND_CHECK #if defined(DUK_OPT_DEBUG) || defined(DUK_OPT_ASSERTIONS) /* Enabled with debug/assertions just so that any issues can be caught. */ #define DUK_USE_EXEC_INDIRECT_BOUND_CHECK #endif /* * Debug printing and assertion options */ #undef DUK_USE_DEBUG #undef DUK_USE_DPRINT #undef DUK_USE_DDPRINT #undef DUK_USE_DDDPRINT #undef DUK_USE_DPRINT_RDTSC #undef DUK_USE_ASSERTIONS /* Global debug enable. Compile must be clean on C99 regardless of whether or * not debugging is enabled. On non-C99 platforms compile should be clean with * debugging disabled but may produce warnings with debugging enabled (related * to debug macro hackery and such). */ #if defined(DUK_OPT_DEBUG) #define DUK_USE_DEBUG #endif #if defined(DUK_OPT_DEBUG) && defined(DUK_OPT_DPRINT) #define DUK_USE_DPRINT #endif #if defined(DUK_OPT_DEBUG) && defined(DUK_OPT_DDPRINT) #define DUK_USE_DDPRINT #endif #if defined(DUK_OPT_DEBUG) && defined(DUK_OPT_DDDPRINT) #define DUK_USE_DDDPRINT #endif #undef DUK_USE_DPRINT_COLORS #if defined(DUK_OPT_DPRINT_COLORS) #define DUK_USE_DPRINT_COLORS #endif #if defined(DUK_USE_RDTSC) && defined(DUK_OPT_DPRINT_RDTSC) #define DUK_USE_DPRINT_RDTSC #else #undef DUK_USE_DPRINT_RDTSC #endif #if defined(DUK_OPT_ASSERTIONS) #define DUK_USE_ASSERTIONS #endif /* The static buffer for debug printing is quite large by default, so there * is an option to shrink it manually for constrained builds. */ #if defined(DUK_OPT_DEBUG_BUFSIZE) #define DUK_USE_DEBUG_BUFSIZE DUK_OPT_DEBUG_BUFSIZE #else #define DUK_USE_DEBUG_BUFSIZE 65536L #endif /* * Ecmascript features / compliance options */ #if defined(DUK_F_BCC) /* Math built-in is stubbed out on BCC to allow compiler torture testing. */ #else #define DUK_USE_MATH_BUILTIN #endif #define DUK_USE_STRICT_DECL #if defined(DUK_OPT_NO_STRICT_DECL) #undef DUK_USE_STRICT_DECL #endif #define DUK_USE_REGEXP_SUPPORT #if defined(DUK_OPT_NO_REGEXP_SUPPORT) #undef DUK_USE_REGEXP_SUPPORT #endif #undef DUK_USE_STRICT_UTF8_SOURCE #if defined(DUK_OPT_STRICT_UTF8_SOURCE) #define DUK_USE_STRICT_UTF8_SOURCE #endif #define DUK_USE_OCTAL_SUPPORT #if defined(DUK_OPT_NO_OCTAL_SUPPORT) #undef DUK_USE_OCTAL_SUPPORT #endif #define DUK_USE_SOURCE_NONBMP #if defined(DUK_OPT_NO_SOURCE_NONBMP) #undef DUK_USE_SOURCE_NONBMP #endif #define DUK_USE_BROWSER_LIKE #if defined(DUK_OPT_NO_BROWSER_LIKE) #undef DUK_USE_BROWSER_LIKE #endif /* E5/E5.1 Section B features. */ #define DUK_USE_SECTION_B #if defined(DUK_OPT_NO_SECTION_B) #undef DUK_USE_SECTION_B #endif /* Non-standard regexp parsing features. */ #define DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE /* Treat function statements (function declarations outside top level of * Program or FunctionBody) same as normal function declarations. This is * also V8 behavior. See test-dev-func-decl-outside-top.js. */ #define DUK_USE_NONSTD_FUNC_STMT #if defined(DUK_OPT_NO_NONSTD_FUNC_STMT) #undef DUK_USE_NONSTD_FUNC_STMT #endif /* Array.prototype.splice() non-standard but real world compatible behavior * when deleteCount is omitted. */ #define DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT #if defined(DUK_OPT_NO_NONSTD_ARRAY_SPLICE_DELCOUNT) #undef DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT #endif /* Array.prototype.concat() non-standard but real world compatible behavior * for non-existent trailing elements. */ #define DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER #if defined(DUK_OPT_NO_NONSTD_ARRAY_CONCAT_TRAILER) #undef DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER #endif /* Array.prototype.map() non-standard but real world compatible behavior * for non-existent trailing elements. */ #define DUK_USE_NONSTD_ARRAY_MAP_TRAILER #if defined(DUK_OPT_NO_NONSTD_ARRAY_MAP_TRAILER) #undef DUK_USE_NONSTD_ARRAY_MAP_TRAILER #endif /* Non-standard 'caller' property for function instances, see * test-bi-function-nonstd-caller-prop.js. */ #undef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY #if defined(DUK_OPT_NONSTD_FUNC_CALLER_PROPERTY) #define DUK_USE_NONSTD_FUNC_CALLER_PROPERTY #endif /* Non-standard Object.prototype.__proto__ (ES6), see * test-bi-object-proto-__proto__.js. */ #define DUK_USE_ES6_OBJECT_PROTO_PROPERTY #if defined(DUK_OPT_NO_ES6_OBJECT_PROTO_PROPERTY) #undef DUK_USE_ES6_OBJECT_PROTO_PROPERTY #endif /* Non-standard Object.setPrototypeOf (ES6), see * test-bi-object-setprototypeof.js. */ #define DUK_USE_ES6_OBJECT_SETPROTOTYPEOF #if defined(DUK_OPT_NO_ES6_OBJECT_SETPROTOTYPEOF) #undef DUK_USE_ES6_OBJECT_SETPROTOTYPEOF #endif /* ES6 Proxy object (subset for now). */ #define DUK_USE_ES6_PROXY #if defined(DUK_OPT_NO_ES6_PROXY) #undef DUK_USE_ES6_PROXY #endif /* Record pc-to-line information. */ #define DUK_USE_PC2LINE #if defined(DUK_OPT_NO_PC2LINE) #undef DUK_USE_PC2LINE #endif /* Non-standard function 'source' property. */ #undef DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY #if defined(DUK_OPT_NONSTD_FUNC_SOURCE_PROPERTY) #define DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY #endif /* CommonJS modules */ #define DUK_USE_COMMONJS_MODULES #if defined(DUK_OPT_NO_COMMONJS_MODULES) #undef DUK_USE_COMMONJS_MODULES #endif /* Additional key argument to setter/getter calls when triggered by property * accesses. */ #define DUK_USE_NONSTD_GETTER_KEY_ARGUMENT #define DUK_USE_NONSTD_SETTER_KEY_ARGUMENT #if defined(DUK_OPT_NO_NONSTD_ACCESSOR_KEY_ARGUMENT) #undef DUK_USE_NONSTD_GETTER_KEY_ARGUMENT #undef DUK_USE_NONSTD_SETTER_KEY_ARGUMENT #endif /* JSON escaping of U+2028 and U+2029. */ #define DUK_USE_NONSTD_JSON_ESC_U2028_U2029 #if defined(DUK_OPT_NO_NONSTD_JSON_ESC_U2028_U2029) #undef DUK_USE_NONSTD_JSON_ESC_U2028_U2029 #endif /* Allow 32-bit codepoints in String.fromCharCode. */ #define DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT #if defined(DUK_OPT_NO_NONSTD_STRING_FROMCHARCODE_32BIT) #undef DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT #endif /* Non-standard array fast path write behavior: when writing to numeric * indexes of an Array instance, assume Array.prototype doesn't have * conflicting properties (e.g. a non-writable property "7"). */ #define DUK_USE_NONSTD_ARRAY_WRITE #if defined(DUK_OPT_NO_NONSTD_ARRAY_WRITE) #undef DUK_USE_NONSTD_ARRAY_WRITE #endif /* Node.js Buffer and Khronos/ES6 typed array support. */ #define DUK_USE_BUFFEROBJECT_SUPPORT #if defined(DUK_OPT_NO_BUFFEROBJECT_SUPPORT) #undef DUK_USE_BUFFEROBJECT_SUPPORT #endif /* * Optional C API options */ #define DUK_USE_BYTECODE_DUMP_SUPPORT #if defined(DUK_OPT_NO_BYTECODE_DUMP_SUPPORT) #undef DUK_USE_BYTECODE_DUMP_SUPPORT #endif /* * Tailcalls */ /* Tailcalls are enabled by default. The non-standard function 'caller' * property feature conflicts with tailcalls quite severely so tailcalls * are disabled if the 'caller' property is enabled. */ #define DUK_USE_TAILCALL #if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) #undef DUK_USE_TAILCALL #endif /* * Ecmascript compiler */ /* Ensure final bytecode never exceeds a certain byte size and never uses * line numbers above a certain limit. This ensures that there is no need * to deal with unbounded ranges in e.g. pc2line data structures. For now, * limits are set so that signed 32-bit values can represent line number * and byte offset with room to spare. */ #define DUK_USE_ESBC_LIMITS #define DUK_USE_ESBC_MAX_LINENUMBER 0x7fff0000L #define DUK_USE_ESBC_MAX_BYTES 0x7fff0000L #undef DUK_USE_SHUFFLE_TORTURE #if defined(DUK_OPT_SHUFFLE_TORTURE) #define DUK_USE_SHUFFLE_TORTURE #endif /* * User panic handler, panic exit behavior for default panic handler */ #undef DUK_USE_PANIC_HANDLER #if defined(DUK_OPT_PANIC_HANDLER) #define DUK_USE_PANIC_HANDLER(code,msg) DUK_OPT_PANIC_HANDLER((code),(msg)) #endif #undef DUK_USE_PANIC_ABORT #undef DUK_USE_PANIC_EXIT #undef DUK_USE_PANIC_SEGFAULT #if defined(DUK_OPT_SEGFAULT_ON_PANIC) #define DUK_USE_PANIC_SEGFAULT #else #define DUK_USE_PANIC_ABORT #endif /* * File I/O support. This is now used in a few API calls to e.g. push * a string from file contents or eval a file. For portability it must * be possible to disable I/O altogether. */ #undef DUK_USE_FILE_IO #if !defined(DUK_OPT_NO_FILE_IO) #define DUK_USE_FILE_IO #endif /* * Optional run-time self tests executed when a heap is created. Some * platform/compiler issues cannot be determined at compile time. One * particular example is the bug described in misc/clang_aliasing.c. */ #undef DUK_USE_SELF_TESTS #if defined(DUK_OPT_SELF_TESTS) #define DUK_USE_SELF_TESTS #endif /* Double aliasing testcase fails when Emscripten-generated code is run * on Firefox. This is not fatal because it only affects packed duk_tval * which we avoid with Emscripten. */ #undef DUK_USE_NO_DOUBLE_ALIASING_SELFTEST #if defined(DUK_F_EMSCRIPTEN) #define DUK_USE_NO_DOUBLE_ALIASING_SELFTEST #endif /* * Codecs */ #define DUK_USE_JX #if defined(DUK_OPT_NO_JX) #undef DUK_USE_JX #endif #define DUK_USE_JC #if defined(DUK_OPT_NO_JC) #undef DUK_USE_JC #endif /* * InitJS code */ /* Always use the built-in InitJS code for now. */ #define DUK_USE_BUILTIN_INITJS /* User provided InitJS. */ #undef DUK_USE_USER_INITJS #if defined(DUK_OPT_USER_INITJS) #define DUK_USE_USER_INITJS (DUK_OPT_USER_INITJS) #endif /* * External string data support * * Allow duk_hstrings to store data also behind an external pointer (see * duk_hstring_external). This increases code size slightly but is useful * in low memory environments where memory is more limited than flash. */ #undef DUK_USE_HSTRING_EXTDATA #if defined(DUK_OPT_EXTERNAL_STRINGS) #define DUK_USE_HSTRING_EXTDATA #endif #undef DUK_USE_EXTSTR_INTERN_CHECK #if defined(DUK_OPT_EXTERNAL_STRINGS) && defined(DUK_OPT_EXTSTR_INTERN_CHECK) #define DUK_USE_EXTSTR_INTERN_CHECK(udata,ptr,len) DUK_OPT_EXTSTR_INTERN_CHECK((udata), (ptr), (len)) #endif #undef DUK_USE_EXTSTR_FREE #if defined(DUK_OPT_EXTERNAL_STRINGS) && defined(DUK_OPT_EXTSTR_FREE) #define DUK_USE_EXTSTR_FREE(udata,ptr) DUK_OPT_EXTSTR_FREE((udata), (ptr)) #endif /* * Lightweight functions */ /* Force built-ins to use lightfunc function pointers when possible. This * makes the built-in functions non-compliant with respect to their property * values and such, but is very useful in low memory environments (can save * around 14kB of initial RAM footprint). */ #undef DUK_USE_LIGHTFUNC_BUILTINS #if defined(DUK_OPT_LIGHTFUNC_BUILTINS) #define DUK_USE_LIGHTFUNC_BUILTINS #endif /* * Pointer compression and 16-bit header fields for low memory environments */ #undef DUK_USE_HEAPPTR16 #undef DUK_USE_HEAPPTR_ENC16 #undef DUK_USE_HEAPPTR_DEC16 #if defined(DUK_OPT_HEAPPTR16) && defined(DUK_OPT_HEAPPTR_ENC16) && defined(DUK_OPT_HEAPPTR_DEC16) #define DUK_USE_HEAPPTR16 #define DUK_USE_HEAPPTR_ENC16(udata,ptr) DUK_OPT_HEAPPTR_ENC16((udata),(ptr)) #define DUK_USE_HEAPPTR_DEC16(udata,ptr) DUK_OPT_HEAPPTR_DEC16((udata),(ptr)) #endif #undef DUK_USE_DATAPTR16 #undef DUK_USE_DATAPTR_ENC16 #undef DUK_USE_DATAPTR_DEC16 #if defined(DUK_OPT_DATAPTR16) && defined(DUK_OPT_DATAPTR_ENC16) && defined(DUK_OPT_DATAPTR_DEC16) #define DUK_USE_DATAPTR16 #define DUK_USE_DATAPTR_ENC16(udata,ptr) DUK_OPT_DATAPTR_ENC16((udata),(ptr)) #define DUK_USE_DATAPTR_DEC16(udata,ptr) DUK_OPT_DATAPTR_DEC16((udata),(ptr)) #endif #undef DUK_USE_FUNCPTR16 #undef DUK_USE_FUNCPTR_ENC16 #undef DUK_USE_FUNCPTR_DEC16 #if defined(DUK_OPT_FUNCPTR16) && defined(DUK_OPT_FUNCPTR_ENC16) && defined(DUK_OPT_FUNCPTR_DEC16) #define DUK_USE_FUNCPTR16 #define DUK_USE_FUNCPTR_ENC16(udata,ptr) DUK_OPT_FUNCPTR_ENC16((udata),(ptr)) #define DUK_USE_FUNCPTR_DEC16(udata,ptr) DUK_OPT_FUNCPTR_DEC16((udata),(ptr)) #endif #undef DUK_USE_REFCOUNT16 #if defined(DUK_OPT_REFCOUNT16) #define DUK_USE_REFCOUNT16 #endif #undef DUK_USE_STRHASH16 #if defined(DUK_OPT_STRHASH16) #define DUK_USE_STRHASH16 #endif #undef DUK_USE_STRLEN16 #if defined(DUK_OPT_STRLEN16) #define DUK_USE_STRLEN16 #endif #undef DUK_USE_BUFLEN16 #if defined(DUK_OPT_BUFLEN16) #define DUK_USE_BUFLEN16 #endif #undef DUK_USE_OBJSIZES16 #if defined(DUK_OPT_OBJSIZES16) #define DUK_USE_OBJSIZES16 #endif /* For now, hash part is dropped if and only if 16-bit object fields are used. */ #define DUK_USE_HOBJECT_HASH_PART #if defined(DUK_USE_OBJSIZES16) #undef DUK_USE_HOBJECT_HASH_PART #endif /* * Miscellaneous */ /* Convenience define: 32-bit pointers. 32-bit platforms are an important * footprint optimization target, and this define allows e.g. struct sizes * to be organized for compactness. */ #undef DUK_USE_32BIT_PTRS #if defined(DUK_UINTPTR_MAX) && !defined(DUK_UINTPTR_MAX_COMPUTED) #if DUK_UINTPTR_MAX <= 0xffffffffUL #define DUK_USE_32BIT_PTRS #endif #endif #define DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS #undef DUK_USE_EXPLICIT_NULL_INIT #define DUK_USE_ZERO_BUFFER_DATA #if defined(DUK_OPT_NO_ZERO_BUFFER_DATA) #undef DUK_USE_ZERO_BUFFER_DATA #endif #undef DUK_USE_VARIADIC_MACROS #if defined(DUK_F_C99) || (defined(DUK_F_CPP11) && defined(__GNUC__)) #define DUK_USE_VARIADIC_MACROS #endif #if defined(_MSC_VER) && !defined(DUK_USE_VARIADIC_MACROS) #if (_MSC_VER >= 1400) /* VS2005+ should have variadic macros even when they're not C99. */ #define DUK_USE_VARIADIC_MACROS #endif #endif /* * Variable size array initialization. * * Variable size array at the end of a structure is nonportable. * There are three alternatives: * * 1) C99 (flexible array member): char buf[] * 2) Compiler specific (e.g. GCC): char buf[0] * 3) Portable but wastes memory / complicates allocation: char buf[1] */ /* XXX: Currently unused, only hbuffer.h needed this at some point. */ #undef DUK_USE_FLEX_C99 #undef DUK_USE_FLEX_ZEROSIZE #undef DUK_USE_FLEX_ONESIZE #if defined(DUK_F_C99) #define DUK_USE_FLEX_C99 #elif defined(__GNUC__) #define DUK_USE_FLEX_ZEROSIZE #else #define DUK_USE_FLEX_ONESIZE #endif /* * GCC pragmas */ /* XXX: GCC pragma inside a function fails in some earlier GCC versions (e.g. gcc 4.5). * This is very approximate but allows clean builds for development right now. */ /* http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html */ #if defined(__GNUC__) && defined(__GNUC_MINOR__) && (__GNUC__ == 4) && (__GNUC_MINOR__ >= 6) #define DUK_USE_GCC_PRAGMAS #else #undef DUK_USE_GCC_PRAGMAS #endif /* * User declarations */ #if defined(DUK_OPT_DECLARE) #define DUK_USE_USER_DECLARE() DUK_OPT_DECLARE #else #define DUK_USE_USER_DECLARE() /* no user declarations */ #endif /* * Autogenerated defaults */ #define DUK_USE_COMPILER_RECLIMIT 2500 #undef DUK_USE_DATE_FORMAT_STRING #undef DUK_USE_DATE_GET_LOCAL_TZOFFSET #undef DUK_USE_DATE_GET_NOW #undef DUK_USE_DATE_PARSE_STRING #undef DUK_USE_DATE_PRS_GETDATE #undef DUK_USE_EXEC_FUN_LOCAL #undef DUK_USE_INTEGER_ME #undef DUK_USE_INTERRUPT_DEBUG_FIXUP #define DUK_USE_JSON_DECNUMBER_FASTPATH #define DUK_USE_JSON_DECSTRING_FASTPATH #define DUK_USE_JSON_DEC_RECLIMIT 1000 #define DUK_USE_JSON_EATWHITE_FASTPATH #define DUK_USE_JSON_ENC_RECLIMIT 1000 #define DUK_USE_JSON_QUOTESTRING_FASTPATH #undef DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE #define DUK_USE_MARK_AND_SWEEP_RECLIMIT 256 #define DUK_USE_NATIVE_CALL_RECLIMIT 1000 #undef DUK_USE_REFZERO_FINALIZER_TORTURE #define DUK_USE_REGEXP_COMPILER_RECLIMIT 10000 #define DUK_USE_REGEXP_EXECUTOR_RECLIMIT 10000 /* * Alternative customization header * * If you want to modify the final DUK_USE_xxx flags directly (without * using the available DUK_OPT_xxx flags), define DUK_OPT_HAVE_CUSTOM_H * and tweak the final flags there. */ #if defined(DUK_OPT_HAVE_CUSTOM_H) #include "duk_custom.h" #endif /* * You may add overriding #define/#undef directives below for * customization. You of course cannot un-#include or un-typedef * anything; these require direct changes above. */ /* __OVERRIDE_DEFINES__ */ /* * Date provider selection * * User may define DUK_USE_DATE_GET_NOW() etc directly, in which case we'll * rely on an external provider. If this is not done, revert to previous * behavior and use Unix/Windows built-in provider. */ #if defined(DUK_COMPILING_DUKTAPE) #if defined(DUK_USE_DATE_GET_NOW) /* External provider already defined. */ #elif defined(DUK_USE_DATE_NOW_GETTIMEOFDAY) DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_gettimeofday(duk_context *ctx); #define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_gettimeofday((ctx)) #elif defined(DUK_USE_DATE_NOW_TIME) DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_time(duk_context *ctx); #define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_time((ctx)) #elif defined(DUK_USE_DATE_NOW_WINDOWS) DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_windows(duk_context *ctx); #define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_windows((ctx)) #else #error no provider for DUK_USE_DATE_GET_NOW() #endif #if defined(DUK_USE_DATE_GET_LOCAL_TZOFFSET) /* External provider already defined. */ #elif defined(DUK_USE_DATE_TZO_GMTIME_R) || defined(DUK_USE_DATE_TZO_GMTIME) DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_gmtime(duk_double_t d); #define DUK_USE_DATE_GET_LOCAL_TZOFFSET(d) duk_bi_date_get_local_tzoffset_gmtime((d)) #elif defined(DUK_USE_DATE_TZO_WINDOWS) DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_windows(duk_double_t d); #define DUK_USE_DATE_GET_LOCAL_TZOFFSET(d) duk_bi_date_get_local_tzoffset_windows((d)) #else #error no provider for DUK_USE_DATE_GET_LOCAL_TZOFFSET() #endif #if defined(DUK_USE_DATE_PARSE_STRING) /* External provider already defined. */ #elif defined(DUK_USE_DATE_PRS_STRPTIME) DUK_INTERNAL_DECL duk_bool_t duk_bi_date_parse_string_strptime(duk_context *ctx, const char *str); #define DUK_USE_DATE_PARSE_STRING(ctx,str) duk_bi_date_parse_string_strptime((ctx), (str)) #elif defined(DUK_USE_DATE_PRS_GETDATE) DUK_INTERNAL_DECL duk_bool_t duk_bi_date_parse_string_getdate(duk_context *ctx, const char *str); #define DUK_USE_DATE_PARSE_STRING(ctx,str) duk_bi_date_parse_string_getdate((ctx), (str)) #else /* No provider for DUK_USE_DATE_PARSE_STRING(), fall back to ISO 8601 only. */ #endif #if defined(DUK_USE_DATE_FORMAT_STRING) /* External provider already defined. */ #elif defined(DUK_USE_DATE_FMT_STRFTIME) DUK_INTERNAL_DECL duk_bool_t duk_bi_date_format_parts_strftime(duk_context *ctx, duk_int_t *parts, duk_int_t tzoffset, duk_small_uint_t flags); #define DUK_USE_DATE_FORMAT_STRING(ctx,parts,tzoffset,flags) \ duk_bi_date_format_parts_strftime((ctx), (parts), (tzoffset), (flags)) #else /* No provider for DUK_USE_DATE_FORMAT_STRING(), fall back to ISO 8601 only. */ #endif #endif /* DUK_COMPILING_DUKTAPE */ /* * Sanity check for the final effective internal defines. Also * double checks user tweaks made by an optional duk_custom.h header. */ /* * Deprecated feature options. * * Catch so that user more easily notices and updates build. */ #if defined(DUK_OPT_NO_FUNC_STMT) #error DUK_OPT_NO_FUNC_STMT is deprecated, use DUK_OPT_NO_NONSTD_FUNC_STMT #endif #if defined(DUK_OPT_FUNC_NONSTD_CALLER_PROPERTY) #error DUK_OPT_FUNC_NONSTD_CALLER_PROPERTY is deprecated, use DUK_OPT_NONSTD_FUNC_CALLER_PROPERTY #endif #if defined(DUK_OPT_FUNC_NONSTD_SOURCE_PROPERTY) #error DUK_OPT_FUNC_NONSTD_SOURCE_PROPERTY is deprecated, use DUK_OPT_NONSTD_FUNC_SOURCE_PROPERTY #endif #if defined(DUK_OPT_NO_ARRAY_SPLICE_NONSTD_DELCOUNT) #error DUK_OPT_NO_ARRAY_SPLICE_NONSTD_DELCOUNT is deprecated, use DUK_OPT_NO_NONSTD_ARRAY_SPLICE_DELCOUNT #endif #if defined(DUK_OPT_NO_OBJECT_ES6_PROTO_PROPERTY) #error DUK_OPT_NO_OBJECT_ES6_PROTO_PROPERTY is deprecated, use DUK_OPT_NO_ES6_OBJECT_PROTO_PROPERTY #endif #if defined(DUK_OPT_NO_OBJECT_ES6_SETPROTOTYPEOF) #error DUK_OPT_NO_OBJECT_ES6_SETPROTOTYPEOF is deprecated, use DUK_OPT_NO_ES6_OBJECT_SETPROTOTYPEOF #endif #if defined(DUK_OPT_NO_JSONX) #error DUK_OPT_NO_JSONX is deprecated, use DUK_OPT_NO_JX #endif #if defined(DUK_OPT_NO_JSONC) #error DUK_OPT_NO_JSONC is deprecated, use DUK_OPT_NO_JC #endif /* * Debug print consistency */ #if defined(DUK_USE_DPRINT) && !defined(DUK_USE_DEBUG) #error DUK_USE_DPRINT without DUK_USE_DEBUG #endif #if defined(DUK_USE_DDPRINT) && !defined(DUK_USE_DEBUG) #error DUK_USE_DDPRINT without DUK_USE_DEBUG #endif #if defined(DUK_USE_DDDPRINT) && !defined(DUK_USE_DEBUG) #error DUK_USE_DDDPRINT without DUK_USE_DEBUG #endif #if defined(DUK_USE_HEAPPTR16) && defined(DUK_USE_DEBUG) /* Debug code doesn't have access to 'heap' so it cannot decode pointers. */ #error debug printing cannot currently be used with heap pointer compression #endif /* * Debugger consistency */ #if defined(DUK_USE_DEBUGGER_SUPPORT) #if !defined(DUK_USE_INTERRUPT_COUNTER) #error DUK_USE_INTERRUPT_COUNTER is needed when debugger support is enabled #endif #if !defined(DUK_USE_PC2LINE) #error DUK_USE_PC2LINE is needed when debugger support is enabled #endif #endif /* * Garbage collection consistency */ #if defined(DUK_USE_REFERENCE_COUNTING) && !defined(DUK_USE_DOUBLE_LINKED_HEAP) #error DUK_USE_REFERENCE_COUNTING defined without DUK_USE_DOUBLE_LINKED_HEAP #endif #if defined(DUK_USE_GC_TORTURE) && !defined(DUK_USE_MARK_AND_SWEEP) #error DUK_USE_GC_TORTURE defined without DUK_USE_MARK_AND_SWEEP #endif /* * Low memory feature consistency */ #if defined(DUK_USE_OBJSIZES16) #if defined(DUK_USE_HOBJECT_HASH_PART) #error DUK_USE_OBJSIZES16 assumes DUK_USE_HOBJECT_HASH_PART is not defined #endif #endif #if defined(DUK_USE_STRTAB_CHAIN) && defined(DUK_USE_STRTAB_PROBE) #error both DUK_USE_STRTAB_CHAIN and DUK_USE_STRTAB_PROBE defined #endif #if !defined(DUK_USE_STRTAB_CHAIN) && !defined(DUK_USE_STRTAB_PROBE) #error neither DUK_USE_STRTAB_CHAIN nor DUK_USE_STRTAB_PROBE is defined #endif #endif /* DUK_CONFIG_H_INCLUDED */