KVM: x86 emulator: jmp abs

Nitin A Kamble · avikivity · commit 26a3e983d154 · 2007-10-13T10:18:29.000+02:00
Implement emulation of instruction:
    jump absolute r/m
    opcode: 0xff /4

Signed-off-by: Nitin A Kamble &lt;nitin.a.kamble@intel.com&gt;
Signed-off-by: Avi Kivity &lt;avi@qumranet.com&gt;
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
@@ -1148,6 +1148,12 @@ x86_emulate_memop(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 		case 1:	/* dec */
 			emulate_1op("dec", dst, _eflags);
 			break;
+		case 4: /* jmp abs */
+			if (b == 0xff)
+				_eip = dst.val;
+			else
+				goto cannot_emulate;
+			break;
 		case 6:	/* push */
 			/* 64-bit mode: PUSH always pushes a 64-bit operand. */
 			if (mode == X86EMUL_MODE_PROT64) {
