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added 64-bit relocation types that required to linking against 64-bit (large model) libraries

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Aron BARATH 2017-05-12 09:31:09 +02:00
parent 1ed20a01c9
commit 3a9d6b3655
1 changed files with 51 additions and 11 deletions
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62
x86_64-link.c
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@ -30,18 +30,23 @@ int code_reloc (int reloc_type)
case R_X86_64_32: case R_X86_64_32:
case R_X86_64_32S: case R_X86_64_32S:
case R_X86_64_64: case R_X86_64_64:
case R_X86_64_GOTPC32:
case R_X86_64_GOTPC64:
case R_X86_64_GOTPCREL: case R_X86_64_GOTPCREL:
case R_X86_64_GOTPCRELX: case R_X86_64_GOTPCRELX:
case R_X86_64_REX_GOTPCRELX: case R_X86_64_REX_GOTPCRELX:
case R_X86_64_GOTTPOFF: case R_X86_64_GOTTPOFF:
case R_X86_64_GOT32: case R_X86_64_GOT32:
case R_X86_64_GOT64:
case R_X86_64_GLOB_DAT: case R_X86_64_GLOB_DAT:
case R_X86_64_COPY: case R_X86_64_COPY:
case R_X86_64_RELATIVE: case R_X86_64_RELATIVE:
return 0; return 0;
case R_X86_64_PC32: case R_X86_64_PC32:
case R_X86_64_PC64:
case R_X86_64_PLT32: case R_X86_64_PLT32:
case R_X86_64_PLTOFF64:
case R_X86_64_JUMP_SLOT: case R_X86_64_JUMP_SLOT:
return 1; return 1;
} }
@ -59,7 +64,7 @@ int gotplt_entry_type (int reloc_type)
case R_X86_64_GLOB_DAT: case R_X86_64_GLOB_DAT:
case R_X86_64_JUMP_SLOT: case R_X86_64_JUMP_SLOT:
case R_X86_64_COPY: case R_X86_64_COPY:
case R_X86_64_RELATIVE: case R_X86_64_RELATIVE:
return NO_GOTPLT_ENTRY; return NO_GOTPLT_ENTRY;
/* The following relocs wouldn't normally need GOT or PLT /* The following relocs wouldn't normally need GOT or PLT
@ -69,16 +74,21 @@ int gotplt_entry_type (int reloc_type)
case R_X86_64_32S: case R_X86_64_32S:
case R_X86_64_64: case R_X86_64_64:
case R_X86_64_PC32: case R_X86_64_PC32:
case R_X86_64_PC64:
return AUTO_GOTPLT_ENTRY; return AUTO_GOTPLT_ENTRY;
case R_X86_64_GOTTPOFF: case R_X86_64_GOTTPOFF:
return BUILD_GOT_ONLY; return BUILD_GOT_ONLY;
case R_X86_64_GOT32: case R_X86_64_GOT32:
case R_X86_64_GOT64:
case R_X86_64_GOTPC32:
case R_X86_64_GOTPC64:
case R_X86_64_GOTPCREL: case R_X86_64_GOTPCREL:
case R_X86_64_GOTPCRELX: case R_X86_64_GOTPCRELX:
case R_X86_64_REX_GOTPCRELX: case R_X86_64_REX_GOTPCRELX:
case R_X86_64_PLT32: case R_X86_64_PLT32:
case R_X86_64_PLTOFF64:
return ALWAYS_GOTPLT_ENTRY; return ALWAYS_GOTPLT_ENTRY;
} }
@ -171,12 +181,12 @@ void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr, addr_t
qrel->r_offset = rel->r_offset; qrel->r_offset = rel->r_offset;
if (esym_index) { if (esym_index) {
qrel->r_info = ELFW(R_INFO)(esym_index, R_X86_64_64); qrel->r_info = ELFW(R_INFO)(esym_index, R_X86_64_64);
qrel->r_addend = rel->r_addend; qrel->r_addend = rel->r_addend;
qrel++; qrel++;
break; break;
} else { } else {
qrel->r_info = ELFW(R_INFO)(0, R_X86_64_RELATIVE); qrel->r_info = ELFW(R_INFO)(0, R_X86_64_RELATIVE);
qrel->r_addend = read64le(ptr) + val; qrel->r_addend = read64le(ptr) + val;
qrel++; qrel++;
} }
} }
@ -211,10 +221,10 @@ void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr, addr_t
goto plt32pc32; goto plt32pc32;
case R_X86_64_PLT32: case R_X86_64_PLT32:
/* fallthrough: val already holds the PLT slot address */ /* fallthrough: val already holds the PLT slot address */
plt32pc32: plt32pc32:
{ {
long long diff; long long diff;
diff = (long long)val - addr; diff = (long long)val - addr;
if (diff < -2147483648LL || diff > 2147483647LL) { if (diff < -2147483648LL || diff > 2147483647LL) {
@ -223,17 +233,43 @@ void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr, addr_t
add32le(ptr, diff); add32le(ptr, diff);
} }
break; break;
case R_X86_64_PLTOFF64:
add64le(ptr, val - s1->got->sh_addr + rel->r_addend);
break;
case R_X86_64_PC64:
if (s1->output_type == TCC_OUTPUT_DLL) {
/* DLL relocation */
esym_index = s1->sym_attrs[sym_index].dyn_index;
if (esym_index) {
qrel->r_offset = rel->r_offset;
qrel->r_info = ELFW(R_INFO)(esym_index, R_X86_64_PC64);
qrel->r_addend = read64le(ptr) + rel->r_addend;
qrel++;
break;
}
}
add64le(ptr, val - addr);
break;
case R_X86_64_GLOB_DAT: case R_X86_64_GLOB_DAT:
case R_X86_64_JUMP_SLOT: case R_X86_64_JUMP_SLOT:
/* They don't need addend */ /* They don't need addend */
write64le(ptr, val - rel->r_addend); write64le(ptr, val - rel->r_addend);
break; break;
case R_X86_64_GOTPCREL: case R_X86_64_GOTPCREL:
case R_X86_64_GOTPCRELX: case R_X86_64_GOTPCRELX:
case R_X86_64_REX_GOTPCRELX: case R_X86_64_REX_GOTPCRELX:
add32le(ptr, s1->got->sh_addr - addr + add32le(ptr, s1->got->sh_addr - addr +
s1->sym_attrs[sym_index].got_offset - 4); s1->sym_attrs[sym_index].got_offset - 4);
break; break;
case R_X86_64_GOTPC32:
add32le(ptr, s1->got->sh_addr - addr + rel->r_addend);
break;
case R_X86_64_GOTPC64:
add64le(ptr, s1->got->sh_addr - addr + rel->r_addend);
break;
case R_X86_64_GOTTPOFF: case R_X86_64_GOTTPOFF:
add32le(ptr, val - s1->got->sh_addr); add32le(ptr, val - s1->got->sh_addr);
break; break;
@ -241,6 +277,10 @@ void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr, addr_t
/* we load the got offset */ /* we load the got offset */
add32le(ptr, s1->sym_attrs[sym_index].got_offset); add32le(ptr, s1->sym_attrs[sym_index].got_offset);
break; break;
case R_X86_64_GOT64:
/* we load the got offset */
add64le(ptr, s1->sym_attrs[sym_index].got_offset);
break;
case R_X86_64_RELATIVE: case R_X86_64_RELATIVE:
/* do nothing */ /* do nothing */
break; break;