linux-kernel - [PATCH 25/50] KVM: x86 emulator: adds support to mov r,imm (opcode 0xb8) instruction

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Message-Id: <1214483312-9265-26-git-send-email-avi@qumranet.com>
Date:	Thu, 26 Jun 2008 15:28:07 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	kvm@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Guillaume Thouvenin <guillaume.thouvenin@....bull.net>
Subject: [PATCH 25/50] KVM: x86 emulator: adds support to mov r,imm (opcode 0xb8) instruction

From: Guillaume Thouvenin <guillaume.thouvenin@....bull.net>

Add support to mov r, imm (0xb8) instruction.

Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@....bull.net>
Signed-off-by: Laurent Vivier <laurent.vivier@...l.net>
Signed-off-by: Avi Kivity <avi@...ranet.com>
---
 arch/x86/kvm/x86_emulate.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c
index 48b62cc..21d7ff6 100644
--- a/arch/x86/kvm/x86_emulate.c
+++ b/arch/x86/kvm/x86_emulate.c
@@ -152,7 +152,8 @@ static u16 opcode_table[256] = {
 	ByteOp | ImplicitOps | Mov | String, ImplicitOps | Mov | String,
 	ByteOp | ImplicitOps | String, ImplicitOps | String,
 	/* 0xB0 - 0xBF */
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0,
+	DstReg | SrcImm | Mov, 0, 0, 0, 0, 0, 0, 0,
 	/* 0xC0 - 0xC7 */
 	ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImmByte | ModRM,
 	0, ImplicitOps | Stack, 0, 0,
@@ -1624,6 +1625,8 @@ special_insn:
 	case 0xae ... 0xaf:	/* scas */
 		DPRINTF("Urk! I don't handle SCAS.\n");
 		goto cannot_emulate;
+	case 0xb8: /* mov r, imm */
+		goto mov;
 	case 0xc0 ... 0xc1:
 		emulate_grp2(ctxt);
 		break;
-- 
1.5.6

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