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| author | grischka <grischka> | 2009-12-19 19:14:14 +0100 |
|---|---|---|
| committer | grischka <grischka> | 2009-12-19 22:16:19 +0100 |
| commit | dd3d4f7295f0729f36acf9be0d6027d1838b9a9b (patch) | |
| tree | c6d297da0685aeba365856f7ffa47e1c154791e1 | |
| parent | 1445fea5827a948996e1c7bea24df4c0df79f432 (diff) | |
| download | tinycc-dd3d4f7295f0729f36acf9be0d6027d1838b9a9b.tar.gz tinycc-dd3d4f7295f0729f36acf9be0d6027d1838b9a9b.tar.bz2 | |
x86-64: fix udiv, add cqto instruction
| -rw-r--r-- | x86_64-asm.h | 1 | ||||
| -rw-r--r-- | x86_64-gen.c | 8 |
2 files changed, 8 insertions, 1 deletions
diff --git a/x86_64-asm.h b/x86_64-asm.h index c2df822..69cd77c 100644 --- a/x86_64-asm.h +++ b/x86_64-asm.h @@ -26,6 +26,7 @@ DEF_ASM_OP0(cwtl, 0x98) DEF_ASM_OP0(cwtd, 0x6699) DEF_ASM_OP0(cltd, 0x99) + DEF_ASM_OP0(cqto, 0x4899) DEF_ASM_OP0(int3, 0xcc) DEF_ASM_OP0(into, 0xce) DEF_ASM_OP0(iret, 0xcf) diff --git a/x86_64-gen.c b/x86_64-gen.c index e22de5c..052bf87 100644 --- a/x86_64-gen.c +++ b/x86_64-gen.c @@ -1137,7 +1137,13 @@ void gen_opi(int op) r = TREG_RAX; } else { if (op == TOK_UDIV || op == TOK_UMOD) { - o(0xf7d231); /* xor %edx, %edx, div fr, %eax */ + if ((vtop->type.t & VT_BTYPE) & VT_LLONG) { + o(0xd23148); /* xor %rdx, %rdx */ + o(0x48 + REX_BASE(fr)); + } else { + o(0xd231); /* xor %edx, %edx */ + } + o(0xf7); /* div fr, %eax */ o(0xf0 + fr); } else { if ((vtop->type.t & VT_BTYPE) & VT_LLONG) { |