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i386: bound checking needs pic in shared library

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This commit is contained in:
herman ten brugge 2026-02-05 09:31:59 +01:00
parent 4fccaf6124
commit abb2f394dd
1 changed files with 18 additions and 2 deletions
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20
i386-gen.c
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@ -1176,6 +1176,22 @@ ST_FUNC void ggoto(void)
/* bound check support functions */ /* bound check support functions */
#ifdef CONFIG_TCC_BCHECK #ifdef CONFIG_TCC_BCHECK
/* Need PIC for shared libraries */
static void gen_bound_call(int v)
{
Sym *sym;
sym = external_helper_sym(v);
#if defined CONFIG_TCC_PIC
get_pc_thunk(TREG_EBX, 1);
oad(0xe8, -4);
greloc(cur_text_section, sym, ind - 4, R_386_PLT32);
#else
oad(0xe8, -4);
greloc(cur_text_section, sym, ind - 4, R_386_PC32);
#endif
}
static void gen_bounds_prolog(void) static void gen_bounds_prolog(void)
{ {
/* leave some room for bound checking code */ /* leave some room for bound checking code */
@ -1224,7 +1240,7 @@ static void gen_bounds_epilog(void)
greloc(cur_text_section, sym_data, ind + 1, R_386_32); greloc(cur_text_section, sym_data, ind + 1, R_386_32);
ind = ind + 5; ind = ind + 5;
#endif #endif
gen_static_call(TOK___bound_local_new); gen_bound_call(TOK___bound_local_new);
ind = saved_ind; ind = saved_ind;
} }
@ -1239,7 +1255,7 @@ static void gen_bounds_epilog(void)
greloc(cur_text_section, sym_data, ind + 1, R_386_32); greloc(cur_text_section, sym_data, ind + 1, R_386_32);
oad(0xb8, 0); /* mov %eax, xxx */ oad(0xb8, 0); /* mov %eax, xxx */
#endif #endif
gen_static_call(TOK___bound_local_delete); gen_bound_call(TOK___bound_local_delete);
o(0x585a); /* restore returned value, if any */ o(0x585a); /* restore returned value, if any */
} }
#endif #endif