linux-kernel - [PATCH 101/104] KVM: x86 emulator: jmp abs

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Message-Id: <11900179491113-git-send-email-avi@qumranet.com>
Date:	Mon, 17 Sep 2007 10:32:23 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	kvm-devel@...ts.sourceforge.net
Cc:	linux-kernel@...r.kernel.org,
	Nitin A Kamble <nitin.a.kamble@...el.com>
Subject: [PATCH 101/104] KVM: x86 emulator: jmp abs

From: Nitin A Kamble <nitin.a.kamble@...el.com>

Implement emulation of instruction:
    jump absolute r/m
    opcode: 0xff /4

Signed-off-by: Nitin A Kamble <nitin.a.kamble@...el.com>
Signed-off-by: Avi Kivity <avi@...ranet.com>
---
 drivers/kvm/x86_emulate.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 4c78a4f..cf8db67 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -1148,6 +1148,12 @@ push:
 		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) {
-- 
1.5.3

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