linux-kernel - [PATCH 103/104] KVM: x86 emulator: popf

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Message-Id: <11900179492892-git-send-email-avi@qumranet.com>
Date:	Mon, 17 Sep 2007 10:32:25 +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 103/104] KVM: x86 emulator: popf

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

Implement emulation of instruction:
    popf
    opcode:  0x9d

Signed-off-by: Nitin A Kamble <nitin.a.kamble@...el.com>
Signed-off-by: Avi Kivity <avi@...ranet.com>
---
 drivers/kvm/x86_emulate.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 7360a71..9737c3b 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -127,7 +127,7 @@ static u8 opcode_table[256] = {
 	ByteOp | DstReg | SrcMem | ModRM | Mov, DstReg | SrcMem | ModRM | Mov,
 	0, ModRM | DstReg, 0, DstMem | SrcNone | ModRM | Mov,
 	/* 0x90 - 0x9F */
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ImplicitOps, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ImplicitOps, ImplicitOps, 0, 0,
 	/* 0xA0 - 0xA7 */
 	ByteOp | DstReg | SrcMem | Mov, DstReg | SrcMem | Mov,
 	ByteOp | DstMem | SrcReg | Mov, DstMem | SrcReg | Mov,
@@ -1293,6 +1293,9 @@ special_insn:
 	case 0x9c: /* pushf */
 		src.val =  (unsigned long) _eflags;
 		goto push;
+	case 0x9d: /* popf */
+		dst.ptr = (unsigned long *) &_eflags;
+		goto pop_instruction;
 	case 0xc3: /* ret */
 		dst.ptr = &_eip;
 		goto pop_instruction;
-- 
1.5.3

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