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KVM: x86 emulator: cmc, clc, cli, sti
Instruction: cmc, clc, cli, sti opcodes: 0xf5, 0xf8, 0xfa, 0xfb respectively. [avi: fix reference to EFLG_IF which is not defined anywhere] Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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@ -161,10 +161,10 @@ static u8 opcode_table[256] = {
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ImplicitOps, SrcImm|ImplicitOps, 0, SrcImmByte|ImplicitOps, 0, 0, 0, 0,
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/* 0xF0 - 0xF7 */
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0, 0, 0, 0,
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ImplicitOps, 0,
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ImplicitOps, ImplicitOps,
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ByteOp | DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM,
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/* 0xF8 - 0xFF */
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0, 0, 0, 0,
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ImplicitOps, 0, ImplicitOps, ImplicitOps,
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0, 0, ByteOp | DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM
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};
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@ -1476,6 +1476,23 @@ special_insn:
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case 0xf4: /* hlt */
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ctxt->vcpu->halt_request = 1;
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goto done;
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case 0xf5: /* cmc */
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/* complement carry flag from eflags reg */
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ctxt->eflags ^= EFLG_CF;
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c->dst.type = OP_NONE; /* Disable writeback. */
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break;
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case 0xf8: /* clc */
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ctxt->eflags &= ~EFLG_CF;
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c->dst.type = OP_NONE; /* Disable writeback. */
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break;
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case 0xfa: /* cli */
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ctxt->eflags &= ~X86_EFLAGS_IF;
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c->dst.type = OP_NONE; /* Disable writeback. */
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break;
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case 0xfb: /* sti */
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ctxt->eflags |= X86_EFLAGS_IF;
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c->dst.type = OP_NONE; /* Disable writeback. */
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break;
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}
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if (c->rep_prefix) {
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if (c->regs[VCPU_REGS_RCX] == 0) {
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