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Commit 2db2c2eb authored by Gleb Natapov's avatar Gleb Natapov Committed by Marcelo Tosatti
Browse files

KVM: x86 emulator: Add group8 instruction decoding 



Use groups mechanism to decode 0F BA instructions.

Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
Cc: stable@kernel.org
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 8b97fb0f

arch/x86/kvm/emulate.c

+6 −1
Original line number Original line Diff line number Diff line
@@ -88,6 +88,7 @@ 
enum {

enum {

	Group1_80, Group1_81, Group1_82, Group1_83,

	Group1_80, Group1_81, Group1_82, Group1_83,

	Group1A, Group3_Byte, Group3, Group4, Group5, Group7,

	Group1A, Group3_Byte, Group3, Group4, Group5, Group7,

	Group8,

};

};





static u32 opcode_table[256] = {

static u32 opcode_table[256] = {
@@ -267,7 +268,7 @@ static u32 twobyte_table[256] = { 
	0, 0, ByteOp | DstReg | SrcMem | ModRM | Mov,

	0, 0, ByteOp | DstReg | SrcMem | ModRM | Mov,

	    DstReg | SrcMem16 | ModRM | Mov,

	    DstReg | SrcMem16 | ModRM | Mov,

	/* 0xB8 - 0xBF */

	/* 0xB8 - 0xBF */

	0, 0, DstMem | SrcImmByte | ModRM, DstMem | SrcReg | ModRM | BitOp,

	0, 0, Group | Group8, DstMem | SrcReg | ModRM | BitOp,

	0, 0, ByteOp | DstReg | SrcMem | ModRM | Mov,

	0, 0, ByteOp | DstReg | SrcMem | ModRM | Mov,

	    DstReg | SrcMem16 | ModRM | Mov,

	    DstReg | SrcMem16 | ModRM | Mov,

	/* 0xC0 - 0xCF */

	/* 0xC0 - 0xCF */
@@ -323,6 +324,10 @@ static u32 group_table[] = { 
	0, 0, ModRM | SrcMem, ModRM | SrcMem,

	0, 0, ModRM | SrcMem, ModRM | SrcMem,

	SrcNone | ModRM | DstMem | Mov, 0,

	SrcNone | ModRM | DstMem | Mov, 0,

	SrcMem16 | ModRM | Mov, SrcMem | ModRM | ByteOp,

	SrcMem16 | ModRM | Mov, SrcMem | ModRM | ByteOp,

	[Group8*8] =

	0, 0, 0, 0,

	DstMem | SrcImmByte | ModRM, DstMem | SrcImmByte | ModRM,

	DstMem | SrcImmByte | ModRM, DstMem | SrcImmByte | ModRM,

};

};





static u32 group2_table[] = {

static u32 group2_table[] = {