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[FAST486]

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Apparently MOVS, LODS, STOS, INS and OUTS can also take REPNZ as a prefix.


svn path=/trunk/; revision=64428
This commit is contained in:
Aleksandar Andrejevic 2014-09-30 22:18:41 +00:00
parent 89722b00b4
commit 87ad3a5ac5
1 changed files with 6 additions and 6 deletions
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12
reactos/lib/fast486/opcodes.c
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@ -5469,7 +5469,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeMovs)
Segment = State->SegmentOverride;
}
if (State->PrefixFlags & FAST486_PREFIX_REP)
if (State->PrefixFlags & (FAST486_PREFIX_REP | FAST486_PREFIX_REPNZ))
{
if ((AddressSize && (State->GeneralRegs[FAST486_REG_ECX].Long == 0))
|| (!AddressSize && (State->GeneralRegs[FAST486_REG_ECX].LowWord == 0)))
@ -5537,7 +5537,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeMovs)
}
// FIXME: This method is slow!
if (State->PrefixFlags & FAST486_PREFIX_REP)
if (State->PrefixFlags & (FAST486_PREFIX_REP | FAST486_PREFIX_REPNZ))
{
if (AddressSize)
{
@ -5727,7 +5727,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeStos)
if (Opcode == 0xAA) DataSize = sizeof(UCHAR);
else DataSize = OperandSize ? sizeof(ULONG) : sizeof(USHORT);
if (State->PrefixFlags & FAST486_PREFIX_REP)
if (State->PrefixFlags & (FAST486_PREFIX_REP | FAST486_PREFIX_REPNZ))
{
UCHAR Block[STRING_BLOCK_SIZE];
ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long
@ -5870,7 +5870,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeLods)
if (Opcode == 0xAC) DataSize = sizeof(UCHAR);
else DataSize = OperandSize ? sizeof(ULONG) : sizeof(USHORT);
if (State->PrefixFlags & FAST486_PREFIX_REP)
if (State->PrefixFlags & (FAST486_PREFIX_REP | FAST486_PREFIX_REPNZ))
{
ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long
: State->GeneralRegs[FAST486_REG_ECX].LowWord;
@ -6056,7 +6056,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeIns)
if (Opcode == 0x6C) DataSize = sizeof(UCHAR);
else DataSize = OperandSize ? sizeof(ULONG) : sizeof(USHORT);
if (State->PrefixFlags & FAST486_PREFIX_REP)
if (State->PrefixFlags & (FAST486_PREFIX_REP | FAST486_PREFIX_REPNZ))
{
UCHAR Block[STRING_BLOCK_SIZE];
ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long
@ -6197,7 +6197,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeOuts)
if (Opcode == 0x6E) DataSize = sizeof(UCHAR);
else DataSize = OperandSize ? sizeof(ULONG) : sizeof(USHORT);
if (State->PrefixFlags & FAST486_PREFIX_REP)
if (State->PrefixFlags & (FAST486_PREFIX_REP | FAST486_PREFIX_REPNZ))
{
UCHAR Block[STRING_BLOCK_SIZE];
ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long