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KVM: x86 emulator: use SrcAcc to simplify xchg decoding
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
parent
4515453964
commit
3d9e77dff8
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@ -2147,7 +2147,7 @@ static struct opcode opcode_table[256] = {
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D(DstMem | SrcNone | ModRM | Mov), D(ModRM | DstReg),
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D(DstMem | SrcNone | ModRM | Mov), D(ModRM | DstReg),
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D(ImplicitOps | SrcMem16 | ModRM), G(0, group1A),
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D(ImplicitOps | SrcMem16 | ModRM), G(0, group1A),
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/* 0x90 - 0x97 */
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/* 0x90 - 0x97 */
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X8(D(DstReg)),
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X8(D(SrcAcc | DstReg)),
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/* 0x98 - 0x9F */
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/* 0x98 - 0x9F */
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N, N, D(SrcImmFAddr | No64), N,
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N, N, D(SrcImmFAddr | No64), N,
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D(ImplicitOps | Stack), D(ImplicitOps | Stack), N, N,
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D(ImplicitOps | Stack), D(ImplicitOps | Stack), N, N,
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@ -2932,16 +2932,9 @@ special_insn:
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if (rc != X86EMUL_CONTINUE)
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if (rc != X86EMUL_CONTINUE)
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goto done;
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goto done;
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break;
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break;
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case 0x90: /* nop / xchg r8,rax */
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case 0x90 ... 0x97: /* nop / xchg reg, rax */
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if (c->dst.addr.reg == &c->regs[VCPU_REGS_RAX]) {
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if (c->dst.addr.reg == &c->regs[VCPU_REGS_RAX])
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c->dst.type = OP_NONE; /* nop */
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goto done;
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break;
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}
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case 0x91 ... 0x97: /* xchg reg,rax */
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c->src.type = OP_REG;
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c->src.bytes = c->op_bytes;
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c->src.addr.reg = &c->regs[VCPU_REGS_RAX];
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c->src.val = *(c->src.addr.reg);
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goto xchg;
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goto xchg;
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case 0x9c: /* pushf */
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case 0x9c: /* pushf */
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c->src.val = (unsigned long) ctxt->eflags;
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c->src.val = (unsigned long) ctxt->eflags;
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