Hi Avi,
Attached patch implement emulation of instructions:
sub al imm8 (opcode 0x2c)
sub ax imm16, sub eax imm32 (opcode 0x2d)Please Apply -- Thanks & Regards, Nitin Open Source Technology Center, Intel Corporation ----------------------------------------------------------------- The mind is like a parachute; it works much better when it's open
commit 6c2690c56af49dd810b504d7c5b8983e4bf25604
Author: Nitin A Kamble <[EMAIL PROTECTED]>
Date: Thu Sep 13 19:39:56 2007 -0700
Implement emulation of instructions:
sub al imm8 (opcode 0x2c)
sub ax imm16, sub eax imm32 (opcode 0x2d)
Signed-off-by: Nitin A Kamble <[EMAIL PROTECTED]>
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 2ffe7f8..5ca4626 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -87,7 +87,7 @@ static u8 opcode_table[256] = {
/* 0x28 - 0x2F */
ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
- 0, 0, 0, 0,
+ SrcImmByte, SrcImm, 0, 0,
/* 0x30 - 0x37 */
ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
@@ -963,10 +963,24 @@ done_prefixes:
dst.val = *(u32 *)dst.ptr;
dst.orig_val = dst.val;
goto and;
- case 0x28 ... 0x2d:
+ case 0x28 ... 0x2b:
sub: /* sub */
emulate_2op_SrcV("sub", src, dst, _eflags);
break;
+ case 0x2c: /* sub al imm8 */
+ dst.type = OP_REG;
+ dst.ptr = &_regs[VCPU_REGS_RAX];
+ dst.val = *(u8 *)dst.ptr;
+ dst.bytes = 1;
+ dst.orig_val = dst.val;
+ goto sub;
+ case 0x2d: /* sub ax imm16, sub eax imm32 */
+ dst.type = OP_REG;
+ dst.bytes = 2;
+ dst.ptr = &_regs[VCPU_REGS_RAX];
+ dst.val = *(u16 *)dst.ptr;
+ dst.orig_val = dst.val;
+ goto sub;
case 0x30 ... 0x35:
xor: /* xor */
emulate_2op_SrcV("xor", src, dst, _eflags);
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