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Commit 55bebde4 authored by Nitin A Kamble's avatar Nitin A Kamble Committed by Avi Kivity
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KVM: X86 emulator: jump conditional short 



Implement emulation of more jump conditional instructions
    jcc shortrel
    opcodes: 0x70 - 0x7f

Signed-off-by: default avatarNitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent bbe9abbd

drivers/kvm/x86_emulate.c

+13 −2
Original line number Diff line number Diff line
@@ -111,8 +111,12 @@ static u8 opcode_table[256] = { 
	0, 0, ImplicitOps|Mov, 0,

	SrcNone  | ByteOp  | ImplicitOps, SrcNone  | ImplicitOps, /* insb, insw/insd */

	SrcNone  | ByteOp  | ImplicitOps, SrcNone  | ImplicitOps, /* outsb, outsw/outsd */

	/* 0x70 - 0x7F */

	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,

	/* 0x70 - 0x77 */

	ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,

	ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,

	/* 0x78 - 0x7F */

	ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,

	ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,

	/* 0x80 - 0x87 */

	ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImm | ModRM,

	ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImmByte | ModRM,
@@ -1268,6 +1272,13 @@ x86_emulate_memop(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
				) == 0)

			return -1;

		return 0;

	case 0x70 ... 0x7f: /* jcc (short) */ {

		int rel = insn_fetch(s8, 1, _eip);



		if (test_cc(b, _eflags))

		JMP_REL(rel);

		break;

	}

	case 0x9c: /* pushf */

		src.val =  (unsigned long) _eflags;

		goto push;