diff options
| author | Nitin A Kamble <nitin.a.kamble@intel.com> | 2007-06-19 11:16:04 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 12:05:47 +0300 |
| commit | 7f0aaee07b6afcf5a4ee8a1132447621d768076b (patch) | |
| tree | 3eb2b7e51898db9ee355b2b4e07294ebf5bc44c0 /drivers | |
| parent | 7700270ee3c1324c18f5b7c36ee5ba1a4165919a (diff) | |
KVM: Implement emulation of "pop reg" instruction (opcode 0x58-0x5f)
For use in real mode.
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/kvm/x86_emulate.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index a4a84817b27..46c38063a10 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -98,8 +98,11 @@ static u8 opcode_table[256] = { 0, 0, 0, 0, /* 0x40 - 0x4F */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - /* 0x50 - 0x5F */ - 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, + /* 0x58 - 0x5F */ + ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps, + ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps, /* 0x60 - 0x6F */ 0, 0, 0, DstReg | SrcMem32 | ModRM | Mov /* movsxd (x86/64) */ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, @@ -1153,6 +1156,16 @@ special_insn: case 0xf4: /* hlt */ ctxt->vcpu->halt_request = 1; goto done; + case 0x58 ... 0x5f: /* pop reg */ + dst.ptr = (unsigned long *)&_regs[b & 0x7]; + + if ((rc = ops->read_std(register_address(ctxt->ss_base, + _regs[VCPU_REGS_RSP]), dst.ptr, op_bytes, ctxt)) != 0) + goto done; + + register_address_increment(_regs[VCPU_REGS_RSP], dst.bytes); + dst.orig_val = dst.val; /* Disable writeback. */ + break; } goto writeback; |