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Add fix for XMM register handling in function calls for x64.

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This commit is contained in:
Pierre R. Mai
2014-10-17 13:47:51 +02:00
parent d5e22108a0
commit 09919777ba
1 changed files with 6 additions and 1 deletions
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7
x86_64-gen.c
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@ -750,7 +750,12 @@ void gfunc_prolog(CType *func_type)
bt = type->t & VT_BTYPE; bt = type->t & VT_BTYPE;
if (reg_param_index < REGN) { if (reg_param_index < REGN) {
/* save arguments passed by register */ /* save arguments passed by register */
gen_modrm64(0x89, arg_regs[reg_param_index], VT_LOCAL, NULL, addr); if ((bt == VT_FLOAT) || (bt == VT_DOUBLE)) {
o(0xd60f66); /* movq */
gen_modrm(reg_param_index, VT_LOCAL, NULL, addr);
} else {
gen_modrm64(0x89, arg_regs[reg_param_index], VT_LOCAL, NULL, addr);
}
} }
if (bt == VT_STRUCT || bt == VT_LDOUBLE) { if (bt == VT_STRUCT || bt == VT_LDOUBLE) {
sym_push(sym->v & ~SYM_FIELD, type, VT_LOCAL | VT_LVAL | VT_REF, addr); sym_push(sym->v & ~SYM_FIELD, type, VT_LOCAL | VT_LVAL | VT_REF, addr);