diff options
| author | Avi Kivity <avi@qumranet.com> | 2007-07-20 12:30:58 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 10:18:19 +0200 |
| commit | e3243452f4f35ed5f79d575100521bf257504b81 (patch) | |
| tree | f694786005d9835c80070d11881872cc8e708b19 /drivers/kvm/x86_emulate.c | |
| parent | 7075bc816cfad142da92207ed5a6f3da55b143ef (diff) | |
| download | blackbird-op-linux-e3243452f4f35ed5f79d575100521bf257504b81.tar.gz blackbird-op-linux-e3243452f4f35ed5f79d575100521bf257504b81.zip | |
KVM: x86 emulator: fix cmov for writeback changes
The writeback fixes (02c03a326a5df825cc01de426f72e160db2b9538) broke
cmov emulation. Fix.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/x86_emulate.c')
| -rw-r--r-- | drivers/kvm/x86_emulate.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index db9f9553487d..82b4ea62c982 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -1235,40 +1235,40 @@ twobyte_insn: break; case 0x40 ... 0x4f: /* cmov */ dst.val = dst.orig_val = src.val; - d &= ~Mov; /* default to no move */ + no_wb = 1; /* * First, assume we're decoding an even cmov opcode * (lsb == 0). */ switch ((b & 15) >> 1) { case 0: /* cmovo */ - d |= (_eflags & EFLG_OF) ? Mov : 0; + no_wb = (_eflags & EFLG_OF) ? 0 : 1; break; case 1: /* cmovb/cmovc/cmovnae */ - d |= (_eflags & EFLG_CF) ? Mov : 0; + no_wb = (_eflags & EFLG_CF) ? 0 : 1; break; case 2: /* cmovz/cmove */ - d |= (_eflags & EFLG_ZF) ? Mov : 0; + no_wb = (_eflags & EFLG_ZF) ? 0 : 1; break; case 3: /* cmovbe/cmovna */ - d |= (_eflags & (EFLG_CF | EFLG_ZF)) ? Mov : 0; + no_wb = (_eflags & (EFLG_CF | EFLG_ZF)) ? 0 : 1; break; case 4: /* cmovs */ - d |= (_eflags & EFLG_SF) ? Mov : 0; + no_wb = (_eflags & EFLG_SF) ? 0 : 1; break; case 5: /* cmovp/cmovpe */ - d |= (_eflags & EFLG_PF) ? Mov : 0; + no_wb = (_eflags & EFLG_PF) ? 0 : 1; break; case 7: /* cmovle/cmovng */ - d |= (_eflags & EFLG_ZF) ? Mov : 0; + no_wb = (_eflags & EFLG_ZF) ? 0 : 1; /* fall through */ case 6: /* cmovl/cmovnge */ - d |= (!(_eflags & EFLG_SF) != - !(_eflags & EFLG_OF)) ? Mov : 0; + no_wb &= (!(_eflags & EFLG_SF) != + !(_eflags & EFLG_OF)) ? 0 : 1; break; } /* Odd cmov opcodes (lsb == 1) have inverted sense. */ - d ^= (b & 1) ? Mov : 0; + no_wb ^= b & 1; break; case 0xb0 ... 0xb1: /* cmpxchg */ /* |
