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Use RELA relocations properly for R_DATA_PTR on x86_64.

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libtcc.c: Add greloca, a generalisation of greloc that takes an addend.
tcc.h: Add greloca and put_elf_reloca.
tccelf.c: Add put_elf_reloca, a generalisation of put_elf_reloc.
tccgen.c: On x86_64, use greloca instead of greloc in init_putv.
This commit is contained in:
Edmund Grimley Evans
2015-02-21 21:29:03 +00:00
parent 86c850fc58
commit 738606dbd5
4 changed files with 46 additions and 13 deletions
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15
tccelf.c
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@ -269,8 +269,8 @@ ST_FUNC int add_elf_sym(Section *s, addr_t value, unsigned long size,
}
/* put relocation */
ST_FUNC void put_elf_reloc(Section *symtab, Section *s, unsigned long offset,
int type, int symbol)
ST_FUNC void put_elf_reloca(Section *symtab, Section *s, unsigned long offset,
int type, int symbol, unsigned long addend)
{
char buf[256];
Section *sr;
@ -292,10 +292,19 @@ ST_FUNC void put_elf_reloc(Section *symtab, Section *s, unsigned long offset,
rel->r_offset = offset;
rel->r_info = ELFW(R_INFO)(symbol, type);
#ifdef TCC_TARGET_X86_64
rel->r_addend = 0;
rel->r_addend = addend;
#else
if (addend)
tcc_error("non-zero addend on REL architecture");
#endif
}
ST_FUNC void put_elf_reloc(Section *symtab, Section *s, unsigned long offset,
int type, int symbol)
{
put_elf_reloca(symtab, s, offset, type, symbol, 0);
}
/* put stab debug information */
ST_FUNC void put_stabs(const char *str, int type, int other, int desc,