diff options
| author | Nitin A Kamble <nitin.a.kamble@intel.com> | 2007-06-19 11:21:15 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 12:05:47 +0300 |
| commit | d9413cd757a7c96d97ddb46ab4e3e04760ae4c55 (patch) | |
| tree | ed7a2e0c4b2122e78c343ce7c27560992da95bd4 | |
| parent | 7f0aaee07b6afcf5a4ee8a1132447621d768076b (diff) | |
KVM: Implement emulation of instruction "ret" (opcode 0xc3)
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | drivers/kvm/x86_emulate.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index 46c38063a10..92620e48f06 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -131,9 +131,9 @@ static u8 opcode_table[256] = { /* 0xB0 - 0xBF */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xC0 - 0xC7 */ - ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImmByte | ModRM, 0, 0, - 0, 0, ByteOp | DstMem | SrcImm | ModRM | Mov, - DstMem | SrcImm | ModRM | Mov, + ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImmByte | ModRM, + 0, ImplicitOps, 0, 0, + ByteOp | DstMem | SrcImm | ModRM | Mov, DstMem | SrcImm | ModRM | Mov, /* 0xC8 - 0xCF */ 0, 0, 0, 0, 0, 0, 0, 0, /* 0xD0 - 0xD7 */ @@ -1156,14 +1156,18 @@ special_insn: case 0xf4: /* hlt */ ctxt->vcpu->halt_request = 1; goto done; + case 0xc3: /* ret */ + dst.ptr = &_eip; + goto pop_instruction; case 0x58 ... 0x5f: /* pop reg */ dst.ptr = (unsigned long *)&_regs[b & 0x7]; +pop_instruction: 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); + register_address_increment(_regs[VCPU_REGS_RSP], op_bytes); dst.orig_val = dst.val; /* Disable writeback. */ break; } |