OSO/TinyCC
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86_64: Handle PLT relocs to hidden symbols

Browse Source 
For calls to hidden symbols we don't need a PLT slot, rewrite
the reloc into PC32.
This commit is contained in:
Michael Matz
2014-04-14 04:58:05 +02:00
parent a9fda392a0
commit e69c506617
1 changed files with 9 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
tccelf.c
View File

@ -1292,13 +1292,20 @@ ST_FUNC void build_got_entries(TCCState *s1)
case R_X86_64_GOTTPOFF: case R_X86_64_GOTTPOFF:
case R_X86_64_GOTPCREL: case R_X86_64_GOTPCREL:
case R_X86_64_PLT32: case R_X86_64_PLT32:
sym_index = ELFW(R_SYM)(rel->r_info);
sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
if (type == R_X86_64_PLT32 &&
ELFW(ST_VISIBILITY)(sym->st_other) != STV_DEFAULT)
{
rel->r_info = ELFW(R_INFO)(sym_index, R_X86_64_PC32);
break;
}
if (!s1->got) if (!s1->got)
build_got(s1); build_got(s1);
if (type == R_X86_64_GOT32 || type == R_X86_64_GOTPCREL || if (type == R_X86_64_GOT32 || type == R_X86_64_GOTPCREL ||
type == R_X86_64_PLT32) { type == R_X86_64_PLT32) {
unsigned long ofs; unsigned long ofs;
sym_index = ELFW(R_SYM)(rel->r_info);
sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
/* look at the symbol got offset. If none, then add one */ /* look at the symbol got offset. If none, then add one */
if (type == R_X86_64_GOT32 || type == R_X86_64_GOTPCREL) if (type == R_X86_64_GOT32 || type == R_X86_64_GOTPCREL)
reloc_type = R_X86_64_GLOB_DAT; reloc_type = R_X86_64_GLOB_DAT;