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Import 409,410: ARM EABI by Daniel Glckner

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This commit is contained in:
grischka
2007-12-04 20:38:09 +00:00
parent 2de1b2d14c
commit f99d3de221
7 changed files with 517 additions and 79 deletions
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42
tccelf.c
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@ -532,6 +532,8 @@ static void relocate_section(TCCState *s1, Section *s)
break;
#elif defined(TCC_TARGET_ARM)
case R_ARM_PC24:
case R_ARM_CALL:
case R_ARM_JUMP24:
case R_ARM_PLT32:
{
int x;
@ -548,13 +550,27 @@ static void relocate_section(TCCState *s1, Section *s)
(*(int *)ptr) |= x;
}
break;
case R_ARM_PREL31:
{
int x;
x = (*(int *)ptr) & 0x7fffffff;
(*(int *)ptr) &= 0x80000000;
x = (x * 2) / 2;
x += val - addr;
if((x^(x>>1))&0x40000000)
error("can't relocate value at %x",addr);
(*(int *)ptr) |= x & 0x7fffffff;
}
case R_ARM_ABS32:
*(int *)ptr += val;
break;
case R_ARM_GOTPC:
case R_ARM_BASE_PREL:
*(int *)ptr += s1->got->sh_addr - addr;
break;
case R_ARM_GOT32:
case R_ARM_GOTOFF32:
*(int *)ptr += val - s1->got->sh_addr;
break;
case R_ARM_GOT_BREL:
/* we load the got offset */
*(int *)ptr += s1->got_offsets[sym_index];
break;
@ -856,17 +872,17 @@ static void build_got_entries(TCCState *s1)
}
break;
#elif defined(TCC_TARGET_ARM)
case R_ARM_GOT32:
case R_ARM_GOTOFF:
case R_ARM_GOTPC:
case R_ARM_GOT_BREL:
case R_ARM_GOTOFF32:
case R_ARM_BASE_PREL:
case R_ARM_PLT32:
if (!s1->got)
build_got(s1);
if (type == R_ARM_GOT32 || type == R_ARM_PLT32) {
if (type == R_ARM_GOT_BREL || type == R_ARM_PLT32) {
sym_index = ELF32_R_SYM(rel->r_info);
sym = &((Elf32_Sym *)symtab_section->data)[sym_index];
/* look at the symbol got offset. If none, then add one */
if (type == R_ARM_GOT32)
if (type == R_ARM_GOT_BREL)
reloc_type = R_ARM_GLOB_DAT;
else
reloc_type = R_ARM_JUMP_SLOT;
@ -1081,8 +1097,12 @@ static void tcc_add_linker_symbols(TCCState *s1)
#ifdef __FreeBSD__
static char elf_interp[] = "/usr/libexec/ld-elf.so.1";
#else
#ifdef TCC_ARM_EABI
static char elf_interp[] = "/lib/ld-linux.so.3";
#else
static char elf_interp[] = "/lib/ld-linux.so.2";
#endif
#endif
static void tcc_output_binary(TCCState *s1, FILE *f,
const int *section_order)
@ -1661,7 +1681,12 @@ int tcc_output_file(TCCState *s1, const char *filename)
ehdr.e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
#endif
#ifdef TCC_TARGET_ARM
#ifdef TCC_ARM_EABI
ehdr.e_ident[EI_OSABI] = 0;
ehdr.e_flags = 4 << 24;
#else
ehdr.e_ident[EI_OSABI] = ELFOSABI_ARM;
#endif
#endif
switch(file_type) {
default:
@ -1833,6 +1858,9 @@ static int tcc_load_object_file(TCCState *s1,
/* ignore sections types we do not handle */
if (sh->sh_type != SHT_PROGBITS &&
sh->sh_type != SHT_REL &&
#ifdef TCC_ARM_EABI
sh->sh_type != SHT_ARM_EXIDX &&
#endif
sh->sh_type != SHT_NOBITS)
continue;
if (sh->sh_addralign < 1)