diff options
| author | Avi Kivity <avi@redhat.com> | 2010-08-18 15:11:24 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-10-24 10:51:12 +0200 |
| commit | b250e605895d02cede78922d034f7825af72a8b5 (patch) | |
| tree | f9a5a70a3aac61362cb39f5bd2725bd0d4c6b861 /arch/x86 | |
| parent | 0ef753b8c323f5b8d75d7dc57ceef6b35982afdb (diff) | |
| download | op-kernel-dev-b250e605895d02cede78922d034f7825af72a8b5.zip op-kernel-dev-b250e605895d02cede78922d034f7825af72a8b5.tar.gz | |
KVM: x86 emulator: add SrcImmU16 operand type
Used for RET NEAR instructions.
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 3133577..db80e28 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -72,6 +72,7 @@ #define SrcImmFAddr (0xb<<4) /* Source is immediate far address */ #define SrcMemFAddr (0xc<<4) /* Source is far address in memory */ #define SrcAcc (0xd<<4) /* Source Accumulator */ +#define SrcImmU16 (0xe<<4) /* Immediate operand, unsigned, 16 bits */ #define SrcMask (0xf<<4) /* Generic ModRM decode. */ #define ModRM (1<<8) @@ -2678,13 +2679,17 @@ done_prefixes: srcmem_common: c->src = memop; break; + case SrcImmU16: + c->src.bytes = 2; + goto srcimm; case SrcImm: case SrcImmU: - c->src.type = OP_IMM; - c->src.addr.mem = c->eip; c->src.bytes = (c->d & ByteOp) ? 1 : c->op_bytes; if (c->src.bytes == 8) c->src.bytes = 4; + srcimm: + c->src.type = OP_IMM; + c->src.addr.mem = c->eip; /* NB. Immediates are sign-extended as necessary. */ switch (c->src.bytes) { case 1: @@ -2697,7 +2702,8 @@ done_prefixes: c->src.val = insn_fetch(s32, 4, c->eip); break; } - if ((c->d & SrcMask) == SrcImmU) { + if ((c->d & SrcMask) == SrcImmU + || (c->d & SrcMask) == SrcImmU16) { switch (c->src.bytes) { case 1: c->src.val &= 0xff; |
