KVM: x86 emulator: pushf

Implement emulation of instruction
	pushf
	opcode: 0x9c

Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 9f1772fd7480..18c2b2cea608 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -123,7 +123,7 @@ static u8 opcode_table[256] = {
         ByteOp | DstReg | SrcMem | ModRM | Mov, DstReg | SrcMem | ModRM | Mov,
         0, 0, 0, DstMem | SrcNone | ModRM | Mov,
         /* 0x90 - 0x9F */
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ImplicitOps, 0, 0, 0,
         /* 0xA0 - 0xA7 */
         ByteOp | DstReg | SrcMem | Mov, DstReg | SrcMem | Mov,
         ByteOp | DstMem | SrcReg | Mov, DstMem | SrcReg | Mov,
@@ -928,7 +928,8 @@ push:
                 dst.bytes = op_bytes;
                 dst.val = src.val;
                 register_address_increment(_regs[VCPU_REGS_RSP], -op_bytes);
-                dst.ptr = register_address(ctxt->ss_base, _regs[VCPU_REGS_RSP]);
+                dst.ptr = (void *) register_address(ctxt->ss_base,
+                                                        _regs[VCPU_REGS_RSP]);
                 break;
         case 0x80 ... 0x83:     /* Grp1 */
                 switch (modrm_reg) {
@@ -1216,6 +1217,12 @@ special_insn:
                                 ) == 0)
                         return -1;
                 return 0;
+
+        case 0x9c: /* pushf */
+                src.val =  (unsigned long) _eflags;
+                goto push;
+                break;
+
         }
         if (rep_prefix) {
                 if (_regs[VCPU_REGS_RCX] == 0) {