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Index: elf2aif/src/elf2aif.c
===================================================================
--- elf2aif/src/elf2aif.c (revision 7698)
+++ elf2aif/src/elf2aif.c (working copy)
@@ -72,12 +72,13 @@
} aifheader_t;
static int opt_verbose = 0;
+static int opt_eabi = 0;
static Elf32_External_Ehdr elf_ehdr;
static phdr_list_t *elf_phdrlistP;
static const char *elf_filename;
-static const unsigned int aifcode[] = {
+static const uint32_t aifcode[] = {
0xE1A00000, /* NOP (BL decompress) */
0xE1A00000, /* NOP (BL self-relocate) */
0xEB00000C, /* BL zero-init */
@@ -113,6 +114,24 @@
0xEAFFFFFB /* B zeroloop */
};
+static const uint32_t crt0code[] = {
+ 0xE59F3010, /* LDR R3, =crt1_data */
+ 0xE583000C, /* STR R0, [R3, #12] */
+ 0xE583101C, /* STR R1, [R3, #28] */
+ 0xE5832020, /* STR R2, [R3, #32] */
+ 0xE1A00003 /* MOV R0, R3 */
+ /* B __main */
+};
+
+static const uint32_t eabi_crt0code[] = {
+ 0xE59F3010, /* LDR R3, =crt1_data */
+ 0xE583000C, /* STR R0, [R3, #12] */
+ 0xE3A00002, /* MOV R0, #2 */
+ 0xEF059D01, /* SWI ARMEABISupport_AbortOp */
+ 0xE1A00003 /* MOV R0, R3 */
+ /* B __main */
+};
+
/* Read a little-endian 'short' value. */
static uint16_t
RdShort (const uint8_t sh[2])
@@ -143,6 +162,7 @@
fprintf (stderr, "Usage: elf2aif [options] <ELF file> [<AIF file>]\n"
"Convert static ARM ELF binary to AIF (Acorn Image Format) binary.\n"
"Options:\n"
+ " -e, --eabi source binary uses EABI\n"
" -v, --verbose prints informational messages during processing\n"
" --help display this help and exit\n"
" --version output version information and exit\n");
@@ -201,7 +221,8 @@
return EXIT_FAILURE;
}
- if (elf_ehdr.e_ident[EI_OSABI] != ELFOSABI_ARM)
+ if ((!opt_eabi && elf_ehdr.e_ident[EI_OSABI] != ELFOSABI_ARM) ||
+ (opt_eabi && elf_ehdr.e_ident[EI_OSABI] != ELFOSABI_NONE))
{
fprintf (stderr, "ELF file '%s' is not for ARM\n", elf_filename);
return EXIT_FAILURE;
@@ -503,6 +524,37 @@
return EXIT_FAILURE;
}
+ /* In the EABI case we need to inject the code to install
+ * the ARMEABISupport abort handler */
+ if (opt_eabi)
+ {
+ uint32_t crt0[5];
+ assert(sizeof (crt0code) == sizeof (crt0));
+ assert(sizeof (eabi_crt0code) == sizeof (crt0));
+
+ if (opt_verbose)
+ printf ("Rewriting crt0 at offset 0x%x\n", (exec_addr - load_addr));
+
+ if (fseek (elfhandle, (exec_addr - load_addr), SEEK_SET) != 0 ||
+ fread (crt0, sizeof (crt0), 1, elfhandle) != 1)
+ {
+ fprintf (stderr, "Failed to read crt0\n");
+ return EXIT_FAILURE;
+ }
+ if (memcmp(crt0, crt0code, sizeof (crt0)) != 0)
+ {
+ fprintf (stderr, "crt0 code not as expected\n");
+ return EXIT_FAILURE;
+ }
+ if (fseek (aifhandle, (exec_addr - load_addr), SEEK_SET) != 0 ||
+ fwrite (eabi_crt0code, sizeof (crt0), 1, aifhandle) != 1 ||
+ fseek (aifhandle, aifend, SEEK_SET) != 0)
+ {
+ fprintf (stderr, "Failed to write crt0\n");
+ return EXIT_FAILURE;
+ }
+ }
+
return EXIT_SUCCESS;
}
@@ -683,6 +735,9 @@
fprintf (stderr, "Warning: extra options/arguments ignored\n");
return EXIT_SUCCESS;
}
+ else if (!strcmp (&argv[i][1], "-eabi")
+ || !strcmp (&argv[i][1], "e"))
+ opt_eabi = 1;
else if (!strcmp (&argv[i][1], "-verbose")
|| !strcmp (&argv[i][1], "v"))
++opt_verbose;
|
