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| author | Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> | 2008-09-12 13:52:18 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-10-15 10:16:14 +0200 |
| commit | aa3a816b6d0bd59e1a9c548cc7d2dd829f26534f (patch) | |
| tree | 979d3f1181f86647bab826149c141fa1d28c8e92 | |
| parent | 8a9fee67fba585b4c4731a749367e1751ebf416c (diff) | |
| download | op-kernel-dev-aa3a816b6d0bd59e1a9c548cc7d2dd829f26534f.zip op-kernel-dev-aa3a816b6d0bd59e1a9c548cc7d2dd829f26534f.tar.gz | |
KVM: x86 emulator: Use DstAcc for 'and'
For instruction 'and al,imm' we use DstAcc instead of doing
the emulation directly into the instruction's opcode.
Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net>
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | arch/x86/kvm/x86_emulate.c | 21 |
1 files changed, 2 insertions, 19 deletions
diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c index 2b43208..ea05117 100644 --- a/arch/x86/kvm/x86_emulate.c +++ b/arch/x86/kvm/x86_emulate.c @@ -96,7 +96,7 @@ static u16 opcode_table[256] = { /* 0x20 - 0x27 */ ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM, ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM, - SrcImmByte, SrcImm, 0, 0, + DstAcc | SrcImmByte, DstAcc | SrcImm, 0, 0, /* 0x28 - 0x2F */ ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM, ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM, @@ -1392,27 +1392,10 @@ special_insn: sbb: /* sbb */ emulate_2op_SrcV("sbb", c->src, c->dst, ctxt->eflags); break; - case 0x20 ... 0x23: + case 0x20 ... 0x25: and: /* and */ emulate_2op_SrcV("and", c->src, c->dst, ctxt->eflags); break; - case 0x24: /* and al imm8 */ - c->dst.type = OP_REG; - c->dst.ptr = &c->regs[VCPU_REGS_RAX]; - c->dst.val = *(u8 *)c->dst.ptr; - c->dst.bytes = 1; - c->dst.orig_val = c->dst.val; - goto and; - case 0x25: /* and ax imm16, or eax imm32 */ - c->dst.type = OP_REG; - c->dst.bytes = c->op_bytes; - c->dst.ptr = &c->regs[VCPU_REGS_RAX]; - if (c->op_bytes == 2) - c->dst.val = *(u16 *)c->dst.ptr; - else - c->dst.val = *(u32 *)c->dst.ptr; - c->dst.orig_val = c->dst.val; - goto and; case 0x28 ... 0x2d: sub: /* sub */ emulate_2op_SrcV("sub", c->src, c->dst, ctxt->eflags); |
