static int
relocate_rela(image_t *rootImage, image_t *image, Elf32_Rela *rel, int rel_len,
SymbolLookupCache* cache)
{
int i;
addr_t S;
addr_t final_val;
# define P ((addr_t *)(image->regions[0].delta + rel[i].r_offset))
//# define A (*(P))
#define A ((addr_t)rel[i].r_addend)
# define B (image->regions[0].delta)
for (i = 0; i * (int)sizeof(Elf32_Rel) < rel_len; i++) {
unsigned type = ELF32_R_TYPE(rel[i].r_info);
switch (type) {
case R_68K_32:
case R_68K_16:
case R_68K_8:
case R_68K_PC32:
case R_68K_PC16:
case R_68K_PC8:
case R_68K_GLOB_DAT:
case R_68K_JMP_SLOT:
{
Elf32_Sym *sym;
status_t status;
sym = SYMBOL(image, ELF32_R_SYM(rel[i].r_info));
status = resolve_symbol(rootImage, image, sym, cache, &S);
if (status < B_OK) {
TRACE(("resolve symbol \"%s\" returned: %ld\n",
SYMNAME(image, sym), status));
printf("resolve symbol \"%s\" returned: %ld\n",
SYMNAME(image, sym), status);
return status;
}
}
}
switch (type) {
case R_68K_NONE:
continue;
case R_68K_32:
write_32(P, S + A);
break;
case R_68K_16:
if (write_16_check(P, S + A))
break;
TRACE(("R_68K_16 overflow\n"));
return B_BAD_DATA;
case R_68K_8:
if (write_8_check(P, S + A))
break;
TRACE(("R_68K_8 overflow\n"));
return B_BAD_DATA;
case R_68K_PC32:
write_32(P, (S + A - (addr_t)P));
break;
#if 0
case R_68K_PC16:
if (write_16_check(P, (S + A - P)))
break;
TRACE(("R_68K_PC16 overflow\n"));
return B_BAD_DATA;
case R_68K_PC8:
if (write_8(P, (S + A - P)))
break;
TRACE(("R_68K_PC8 overflow\n"));
return B_BAD_DATA;
case R_68K_GOT32:
REQUIRE_GOT;
write_32(P, (G + A - P));
break;
case R_68K_GOT16:
REQUIRE_GOT;
if (write_16_check(P, (G + A - P)))
break;
TRACE(("R_68K_GOT16 overflow\n"));
return B_BAD_DATA;
case R_68K_GOT8:
REQUIRE_GOT;
if (write_8_check(P, (G + A - P)))
break;
TRACE(("R_68K_GOT8 overflow\n"));
return B_BAD_DATA;
case R_68K_GOT32O:
REQUIRE_GOT;
write_32(P, (G + A));
break;
case R_68K_GOT16O:
REQUIRE_GOT;
if (write_16_check(P, (G + A)))
break;
TRACE(("R_68K_GOT16 overflow\n"));
return B_BAD_DATA;
case R_68K_GOT8O:
REQUIRE_GOT;
if (write_8_check(P, (G + A)))
break;
TRACE(("R_68K_GOT8 overflow\n"));
return B_BAD_DATA;
case R_68K_PLT32:
REQUIRE_PLT;
write_32(P, (L + A - P));
break;
case R_68K_PLT16:
REQUIRE_PLT;
if (write_16_check(P, (L + A - P)))
break;
TRACE(("R_68K_PLT16 overflow\n"));
return B_BAD_DATA;
case R_68K_PLT8:
REQUIRE_PLT;
if (write_8_check(P, (L + A - P)))
break;
TRACE(("R_68K_PLT8 overflow\n"));
return B_BAD_DATA;
case R_68K_PLT32O:
REQUIRE_PLT;
write_32(P, (L + A));
break;
case R_68K_PLT16O:
REQUIRE_PLT;
if (write_16_check(P, (L + A)))
break;
TRACE(("R_68K_PLT16O overflow\n"));
return B_BAD_DATA;
case R_68K_PLT8O:
REQUIRE_PLT;
if (write_8_check(P, (L + A)))
break;
TRACE(("R_68K_PLT8O overflow\n"));
return B_BAD_DATA;
case R_386_GOT32:
final_val = G + A;
break;
case R_386_PLT32:
final_val = L + A - (addr_t)P;
break;
#endif
case R_68K_COPY:
/* what ? */
continue;
case R_68K_GLOB_DAT:
write_32(P, S/* + A*/);
break;
case R_68K_JMP_SLOT:
//XXX ? write_32(P, (G + A));
write_32(P, S);
break;
#if 0
case R_386_JMP_SLOT:
write_32(P, S);
break;
#endif
case R_68K_RELATIVE:
write_32(P, B + A);
break;
#if 0
case R_386_GOTOFF:
final_val = S + A - GOT;
break;
case R_386_GOTPC:
final_val = GOT + A - P;
break;
#endif
default:
TRACE(("unhandled relocation type %d\n", ELF32_R_TYPE(rel[i].r_info)));
return B_NOT_ALLOWED;
}
*P = final_val;
}
# undef P
# undef A
# undef B
return B_NO_ERROR;
}
int
arch_elf_relocate_rela(struct elf_image_info *image,
struct elf_image_info *resolve_image, struct Elf32_Rela *rel, int rel_len)
#endif
{
int i;
struct Elf32_Sym *sym;
int vlErr;
addr_t S = 0; // symbol address
addr_t R = 0; // section relative symbol address
addr_t G = 0; // GOT address
addr_t L = 0; // PLT address
#define P ((addr_t)(image->text_region.delta + rel[i].r_offset))
#define A ((addr_t)rel[i].r_addend)
#define B (image->text_region.delta)
// TODO: Get the GOT address!
#define REQUIRE_GOT \
if (G == 0) { \
dprintf("arch_elf_relocate_rela(): Failed to get GOT address!\n"); \
return B_ERROR; \
}
// TODO: Get the PLT address!
#define REQUIRE_PLT \
if (L == 0) { \
dprintf("arch_elf_relocate_rela(): Failed to get PLT address!\n"); \
return B_ERROR; \
}
for (i = 0; i * (int)sizeof(struct Elf32_Rela) < rel_len; i++) {
#if CHATTY
dprintf("looking at rel type %d, offset 0x%lx, sym 0x%lx, addend 0x%lx\n",
ELF32_R_TYPE(rel[i].r_info), rel[i].r_offset, ELF32_R_SYM(rel[i].r_info), rel[i].r_addend);
#endif
switch (ELF32_R_TYPE(rel[i].r_info)) {
case R_68K_32:
case R_68K_16:
case R_68K_8:
case R_68K_PC32:
case R_68K_PC16:
case R_68K_PC8:
case R_68K_GLOB_DAT:
case R_68K_JMP_SLOT:
sym = SYMBOL(image, ELF32_R_SYM(rel[i].r_info));
#ifdef _BOOT_MODE
vlErr = boot_elf_resolve_symbol(image, sym, &S);
#else
vlErr = elf_resolve_symbol(image, sym, resolve_image, &S);
#endif
if (vlErr < 0) {
dprintf("%s(): Failed to relocate "
"entry index %d, rel type %d, offset 0x%lx, sym 0x%lx, "
"addend 0x%lx\n", __FUNCTION__, i, ELF32_R_TYPE(rel[i].r_info),
rel[i].r_offset, ELF32_R_SYM(rel[i].r_info),
rel[i].r_addend);
return vlErr;
}
break;
}
switch (ELF32_R_TYPE(rel[i].r_info)) {
case R_68K_NONE:
break;
case R_68K_COPY:
// TODO: Implement!
dprintf("arch_elf_relocate_rela(): R_68K_COPY not yet "
"supported!\n");
return B_ERROR;
case R_68K_32:
case R_68K_GLOB_DAT:
write_32(P, S + A);
break;
case R_68K_16:
if (write_16_check(P, S + A))
break;
dprintf("R_68K_16 overflow\n");
return B_BAD_DATA;
case R_68K_8:
if (write_8_check(P, S + A))
break;
dprintf("R_68K_8 overflow\n");
return B_BAD_DATA;
case R_68K_PC32:
write_32(P, (S + A - P));
break;
case R_68K_PC16:
if (write_16_check(P, (S + A - P)))
break;
dprintf("R_68K_PC16 overflow\n");
return B_BAD_DATA;
case R_68K_PC8:
if (write_8(P, (S + A - P)))
break;
dprintf("R_68K_PC8 overflow\n");
return B_BAD_DATA;
case R_68K_GOT32:
REQUIRE_GOT;
write_32(P, (G + A - P));
break;
case R_68K_GOT16:
REQUIRE_GOT;
if (write_16_check(P, (G + A - P)))
break;
dprintf("R_68K_GOT16 overflow\n");
return B_BAD_DATA;
case R_68K_GOT8:
REQUIRE_GOT;
if (write_8_check(P, (G + A - P)))
break;
dprintf("R_68K_GOT8 overflow\n");
return B_BAD_DATA;
case R_68K_GOT32O:
REQUIRE_GOT;
write_32(P, (G + A));
break;
case R_68K_GOT16O:
REQUIRE_GOT;
if (write_16_check(P, (G + A)))
break;
dprintf("R_68K_GOT16 overflow\n");
return B_BAD_DATA;
case R_68K_GOT8O:
REQUIRE_GOT;
if (write_8_check(P, (G + A)))
break;
dprintf("R_68K_GOT8 overflow\n");
return B_BAD_DATA;
case R_68K_JMP_SLOT:
write_32(P, (G + A));
break;
case R_68K_RELATIVE:
write_32(P, B + A);
break;
case R_68K_PLT32:
REQUIRE_PLT;
write_32(P, (L + A - P));
break;
case R_68K_PLT16:
REQUIRE_PLT;
if (write_16_check(P, (L + A - P)))
break;
dprintf("R_68K_PLT16 overflow\n");
return B_BAD_DATA;
case R_68K_PLT8:
REQUIRE_PLT;
if (write_8_check(P, (L + A - P)))
break;
dprintf("R_68K_PLT8 overflow\n");
return B_BAD_DATA;
case R_68K_PLT32O:
REQUIRE_PLT;
write_32(P, (L + A));
break;
case R_68K_PLT16O:
REQUIRE_PLT;
if (write_16_check(P, (L + A)))
break;
dprintf("R_68K_PLT16O overflow\n");
return B_BAD_DATA;
case R_68K_PLT8O:
REQUIRE_PLT;
if (write_8_check(P, (L + A)))
break;
dprintf("R_68K_PLT8O overflow\n");
return B_BAD_DATA;
default:
dprintf("arch_elf_relocate_rela: unhandled relocation type %d\n", ELF32_R_TYPE(rel[i].r_info));
return B_ERROR;
}
}
return B_NO_ERROR;
}
