KVM: x86 emulator: Add support for mov r, sreg (0x8c) instruction
Add support for mov r, sreg (0x8c) instruction
Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net>
Signed-off-by: Laurent Vivier <laurent.vivier@bull.net>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c
index b049b6b..2a9db4d 100644
--- a/arch/x86/kvm/x86_emulate.c
+++ b/arch/x86/kvm/x86_emulate.c
@@ -138,7 +138,7 @@
/* 0x88 - 0x8F */
ByteOp | DstMem | SrcReg | ModRM | Mov, DstMem | SrcReg | ModRM | Mov,
ByteOp | DstReg | SrcMem | ModRM | Mov, DstReg | SrcMem | ModRM | Mov,
- 0, ModRM | DstReg,
+ DstMem | SrcReg | ModRM | Mov, ModRM | DstReg,
DstReg | SrcMem | ModRM | Mov, Group | Group1A,
/* 0x90 - 0x9F */
0, 0, 0, 0, 0, 0, 0, 0,
@@ -1518,6 +1518,19 @@
break;
case 0x88 ... 0x8b: /* mov */
goto mov;
+ case 0x8c: { /* mov r/m, sreg */
+ struct kvm_segment segreg;
+
+ if (c->modrm_reg <= 5)
+ kvm_get_segment(ctxt->vcpu, &segreg, c->modrm_reg);
+ else {
+ printk(KERN_INFO "0x8c: Invalid segreg in modrm byte 0x%02x\n",
+ c->modrm);
+ goto cannot_emulate;
+ }
+ c->dst.val = segreg.selector;
+ break;
+ }
case 0x8d: /* lea r16/r32, m */
c->dst.val = c->modrm_ea;
break;