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Make build_got_entries more target independent

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Factor most of common logic between targets in build_got_entries by
defining target specific info into structures in the backends.
This commit is contained in:
Thomas Preud'homme
2016-11-12 23:16:07 +08:00
parent 523b55d82d
commit 1c811a4d1d
11 changed files with 184 additions and 216 deletions
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20
tcc.h
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@ -1305,6 +1305,26 @@ typedef struct {
unsigned int n_value; /* value of symbol */
} Stab_Sym;
/* Wether to generate a GOT/PLT entry and when. NO_GOTPLT_ENTRY is first so
that unknown relocation don't create a GOT or PLT entry */
enum gotplt_entry {
NO_GOTPLT_ENTRY, /* never generate (eg. GLOB_DAT & JMP_SLOT relocs) */
BUILD_GOT_ONLY, /* only build GOT (eg. TPOFF relocs) */
AUTO_GOTPLT_ENTRY, /* generate if sym is UNDEF */
ALWAYS_GOTPLT_ENTRY /* always generate (eg. PLTOFF relocs) */
};
/* what kind of relocation is it */
struct reloc_info {
int code_reloc; /* if false, that's a data reloc */
int gotplt_entry; /* wether and when to create a GOT/PLT entry */
int pltoff_addend; /* wether to store the PLT offset in addend */
};
#define INIT_RELOC_INFO(rtype, code_reloc, gotplt_entry, pltoff_addend) \
[rtype] = {code_reloc, gotplt_entry, pltoff_addend},
ST_DATA struct reloc_info relocs_info[];
ST_DATA Section *text_section, *data_section, *bss_section; /* predefined sections */
ST_DATA Section *cur_text_section; /* current section where function code is generated */
#ifdef CONFIG_TCC_ASM