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KVM: x86 emulator: add the emulation of shld and shrd instructions 

Add emulation of shld and shrd instructions

Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Guillaume Thouvenin 2008-12-04 14:30:13 +01:00 committed by Avi Kivity
parent d175226a5f
commit 9bf8ea42fe
1 changed files with 15 additions and 2 deletions
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17
arch/x86/kvm/x86_emulate.c
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@ -237,9 +237,14 @@ static u32 twobyte_table[256] = {
/* 0x90 - 0x9F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0xA0 - 0xA7 */
0, 0, 0, DstMem | SrcReg | ModRM | BitOp, 0, 0, 0, 0,
0, 0, 0, DstMem | SrcReg | ModRM | BitOp,
DstMem | SrcReg | Src2ImmByte | ModRM,
DstMem | SrcReg | Src2CL | ModRM, 0, 0,
/* 0xA8 - 0xAF */
0, 0, 0, DstMem | SrcReg | ModRM | BitOp, 0, 0, ModRM, 0,
0, 0, 0, DstMem | SrcReg | ModRM | BitOp,
DstMem | SrcReg | Src2ImmByte | ModRM,
DstMem | SrcReg | Src2CL | ModRM,
ModRM, 0,
/* 0xB0 - 0xB7 */
ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM, 0,
DstMem | SrcReg | ModRM | BitOp,
@ -2037,12 +2042,20 @@ twobyte_insn:
c->src.val &= (c->dst.bytes << 3) - 1;
emulate_2op_SrcV_nobyte("bt", c->src, c->dst, ctxt->eflags);
break;
case 0xa4: /* shld imm8, r, r/m */
case 0xa5: /* shld cl, r, r/m */
emulate_2op_cl("shld", c->src2, c->src, c->dst, ctxt->eflags);
break;
case 0xab:
bts: /* bts */
/* only subword offset */
c->src.val &= (c->dst.bytes << 3) - 1;
emulate_2op_SrcV_nobyte("bts", c->src, c->dst, ctxt->eflags);
break;
case 0xac: /* shrd imm8, r, r/m */
case 0xad: /* shrd cl, r, r/m */
emulate_2op_cl("shrd", c->src2, c->src, c->dst, ctxt->eflags);
break;
case 0xae: /* clflush */
break;
case 0xb0 ... 0xb1: /* cmpxchg */