Commit 7e778161 authored by Nitin A Kamble's avatar Nitin A Kamble Committed by Avi Kivity
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KVM: x86 emulator: implement 'push reg' (opcodes 0x50-0x57) 



Signed-off-by: default avatarNitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent c53ce170

drivers/kvm/x86_emulate.c

+15 −1
Original line number Diff line number Diff line
@@ -99,7 +99,8 @@ static u8 opcode_table[256] = { 
	/* 0x40 - 0x4F */

	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,

	/* 0x50 - 0x57 */

	0, 0, 0, 0, 0, 0, 0, 0,

	ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,

	ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,

	/* 0x58 - 0x5F */

	ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,

	ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
@@ -1151,6 +1152,19 @@ x86_emulate_memop(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) 
	if (twobyte)

		goto twobyte_special_insn;

	switch(b) {

	case 0x50 ... 0x57:  /* push reg */

		if (op_bytes == 2)

			src.val = (u16) _regs[b & 0x7];

		else

			src.val = (u32) _regs[b & 0x7];

		dst.type  = OP_MEM;

		dst.bytes = op_bytes;

		dst.val = src.val;

		register_address_increment(_regs[VCPU_REGS_RSP], -op_bytes);

		dst.ptr = (void *) register_address(

			ctxt->ss_base, _regs[VCPU_REGS_RSP]);

		no_wb = 1; /* force writeback */

		break;

	case 0x6c:		/* insb */

	case 0x6d:		/* insw/insd */

		 if (kvm_emulate_pio_string(ctxt->vcpu, NULL,