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KVM: x86 emulator: implement 'push reg' (opcodes 0x50-0x57) 

Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Nitin A Kamble 2007-08-19 11:07:06 +03:00 committed by Avi Kivity
parent c53ce170a9
commit 7e778161fb
1 changed files with 15 additions and 1 deletions
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16
drivers/kvm/x86_emulate.c
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@ -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 @@ special_insn:
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,