Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-01-01 03:54:02 +00:00
Code Issues Projects Releases Packages Wiki Activity

[FAST486]

Browse source 
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
Show stats Download patch file Download diff file Expand all files Collapse all files

12
reactos/lib/fast486/opcodes.c
View file

@ -5469,7 +5469,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeMovs)
Segment = State->SegmentOverride; 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)) if ((AddressSize && (State->GeneralRegs[FAST486_REG_ECX].Long == 0))
|| (!AddressSize && (State->GeneralRegs[FAST486_REG_ECX].LowWord == 0))) || (!AddressSize && (State->GeneralRegs[FAST486_REG_ECX].LowWord == 0)))
@ -5537,7 +5537,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeMovs)
} }
// FIXME: This method is slow! // FIXME: This method is slow!
if (State->PrefixFlags & FAST486_PREFIX_REP) if (State->PrefixFlags & (FAST486_PREFIX_REP | FAST486_PREFIX_REPNZ))
{ {
if (AddressSize) if (AddressSize)
{ {
@ -5727,7 +5727,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeStos)
if (Opcode == 0xAA) DataSize = sizeof(UCHAR); if (Opcode == 0xAA) DataSize = sizeof(UCHAR);
else DataSize = OperandSize ? sizeof(ULONG) : sizeof(USHORT); 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]; UCHAR Block[STRING_BLOCK_SIZE];
ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long
@ -5870,7 +5870,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeLods)
if (Opcode == 0xAC) DataSize = sizeof(UCHAR); if (Opcode == 0xAC) DataSize = sizeof(UCHAR);
else DataSize = OperandSize ? sizeof(ULONG) : sizeof(USHORT); 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 ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long
: State->GeneralRegs[FAST486_REG_ECX].LowWord; : State->GeneralRegs[FAST486_REG_ECX].LowWord;
@ -6056,7 +6056,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeIns)
if (Opcode == 0x6C) DataSize = sizeof(UCHAR); if (Opcode == 0x6C) DataSize = sizeof(UCHAR);
else DataSize = OperandSize ? sizeof(ULONG) : sizeof(USHORT); 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]; UCHAR Block[STRING_BLOCK_SIZE];
ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long
@ -6197,7 +6197,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeOuts)
if (Opcode == 0x6E) DataSize = sizeof(UCHAR); if (Opcode == 0x6E) DataSize = sizeof(UCHAR);
else DataSize = OperandSize ? sizeof(ULONG) : sizeof(USHORT); 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]; UCHAR Block[STRING_BLOCK_SIZE];
ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long ULONG Count = AddressSize ? State->GeneralRegs[FAST486_REG_ECX].Long