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>

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 9f1772f..18c2b2c 100644 (file)
--- 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) {