[PATCH 04/40] KVM: x86 emulator: group decoding for group 1A

From: Avi Kivity <avi@xxxxxxxxxxxx>
Date: Mon, 31 Mar 2008 17:36:48 +0300

This adds group decode support for opcode 0x8f.

Signed-off-by: Avi Kivity <avi@xxxxxxxxxxxx>
---
arch/x86/kvm/x86_emulate.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c
index 46ecf34..cf1ce7c 100644
--- a/arch/x86/kvm/x86_emulate.c
+++ b/arch/x86/kvm/x86_emulate.c
@@ -69,6 +69,10 @@
#define GroupDual (1<<15) /* Alternate decoding of mod == 3 */
#define GroupMask 0xff /* Group number stored in bits 0:7 */

+enum {
+ Group1A,
+};
+
static u16 opcode_table[256] = {
/* 0x00 - 0x07 */
ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
@@ -133,7 +137,7 @@ static u16 opcode_table[256] = {
/* 0x88 - 0x8F */
ByteOp | DstMem | SrcReg | ModRM | Mov, DstMem | SrcReg | ModRM | Mov,
ByteOp | DstReg | SrcMem | ModRM | Mov, DstReg | SrcMem | ModRM | Mov,
- 0, ModRM | DstReg, 0, DstMem | SrcNone | ModRM | Mov | Stack,
+ 0, ModRM | DstReg, 0, Group | Group1A,
/* 0x90 - 0x9F */
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, ImplicitOps | Stack, ImplicitOps | Stack, 0, 0,
@@ -233,6 +237,8 @@ static u16 twobyte_table[256] = {
};

static u16 group_table[] = {
+ [Group1A*8] =
+ DstMem | SrcNone | ModRM | Mov | Stack, 0, 0, 0, 0, 0, 0, 0,
};

static u16 group2_table[] = {
--
1.5.4.5

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References:
- [PATCH 00/40] KVM updates for the 2.6.26 merge window (part I)
  - From: Avi Kivity

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