x86-64: fix udiv, add cqto instruction

grischka committed 16 years ago

Commit dd3d4f71 parent 1445fea2 files · +8 −1Browse files

Unified · Split

2 files

x86_64-asm.h +1 −0
x86_64-gen.c +7 −1

x86_64-asm.h+1−0

@@ -26,6 +26,7 @@ · 25 unmodified lines
26	26	DEF_ASM_OP0(cwtl, 0x98)
27	27	DEF_ASM_OP0(cwtd, 0x6699)
28	28	DEF_ASM_OP0(cltd, 0x99)
	29	+ DEF_ASM_OP0(cqto, 0x4899)
29	30	DEF_ASM_OP0(int3, 0xcc)
30	31	DEF_ASM_OP0(into, 0xce)
31	32	DEF_ASM_OP0(iret, 0xcf)

x86_64-gen.c+7−1

@@ -1137,7 +1137,13 @@ void gen_opi(int op) · 1136 unmodified lines
1137	1137	r = TREG_RAX;
1138	1138	} else {
1139	1139	if (op == TOK_UDIV \|\| op == TOK_UMOD) {
1140		− o(0xf7d231); /* xor %edx, %edx, div fr, %eax */
	1140	+ if ((vtop->type.t & VT_BTYPE) & VT_LLONG) {
	1141	+ o(0xd23148); /* xor %rdx, %rdx */
	1142	+ o(0x48 + REX_BASE(fr));
	1143	+ } else {
	1144	+ o(0xd231); /* xor %edx, %edx */
	1145	+ }
	1146	+ o(0xf7); /* div fr, %eax */
1141	1147	o(0xf0 + fr);
1142	1148	} else {
1143	1149	if ((vtop->type.t & VT_BTYPE) & VT_LLONG) {