diff options
| author | Gleb Natapov <gleb@redhat.com> | 2009-04-12 13:36:25 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-06-10 11:48:40 +0300 |
| commit | 782b877c8073a9ef307ad6638ee472b8336b2b85 (patch) | |
| tree | 454b855b52f8ab88a2e26b45df43b78fc8337eed /arch/x86 | |
| parent | 0654169e7309f2f68ec4bea9257b14b05ea94d7d (diff) | |
KVM: x86 emulator: Complete ljmp decoding at decode stage
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/x86_emulate.c | 25 |
1 files changed, 5 insertions, 20 deletions
diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c index 71b4bee2e22..8779cf233a8 100644 --- a/arch/x86/kvm/x86_emulate.c +++ b/arch/x86/kvm/x86_emulate.c @@ -193,7 +193,7 @@ static u32 opcode_table[256] = { SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* 0xE8 - 0xEF */ ImplicitOps | Stack, SrcImm | ImplicitOps, - ImplicitOps, SrcImmByte | ImplicitOps, + SrcImm | Src2Imm16, SrcImmByte | ImplicitOps, SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* 0xF0 - 0xF7 */ @@ -1805,30 +1805,15 @@ special_insn: } case 0xe9: /* jmp rel */ goto jmp; - case 0xea: /* jmp far */ { - uint32_t eip; - uint16_t sel; - - switch (c->op_bytes) { - case 2: - eip = insn_fetch(u16, 2, c->eip); - break; - case 4: - eip = insn_fetch(u32, 4, c->eip); - break; - default: - DPRINTF("jmp far: Invalid op_bytes\n"); - goto cannot_emulate; - } - sel = insn_fetch(u16, 2, c->eip); - if (kvm_load_segment_descriptor(ctxt->vcpu, sel, 9, VCPU_SREG_CS) < 0) { + case 0xea: /* jmp far */ + if (kvm_load_segment_descriptor(ctxt->vcpu, c->src2.val, 9, + VCPU_SREG_CS) < 0) { DPRINTF("jmp far: Failed to load CS descriptor\n"); goto cannot_emulate; } - c->eip = eip; + c->eip = c->src.val; break; - } case 0xeb: jmp: /* jmp rel short */ jmp_rel(c, c->src.val); |