Soft386OpcodeAddModrm,
Soft386OpcodeAddAl,
Soft386OpcodeAddEax,
- NULL, // TODO: OPCODE 0x06 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x07 NOT SUPPORTED
+ Soft386OpcodePushEs,
+ Soft386OpcodePopEs,
Soft386OpcodeOrByteModrm,
Soft386OpcodeOrModrm,
Soft386OpcodeOrByteModrm,
Soft386OpcodeOrModrm,
Soft386OpcodeOrAl,
Soft386OpcodeOrEax,
- NULL, // TODO: OPCODE 0x0E NOT SUPPORTED
+ Soft386OpcodePushCs,
NULL, // TODO: OPCODE 0x0F NOT SUPPORTED
- NULL, // TODO: OPCODE 0x10 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x11 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x12 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x13 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x14 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x15 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x16 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x17 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x18 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x19 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x1A NOT SUPPORTED
- NULL, // TODO: OPCODE 0x1B NOT SUPPORTED
- NULL, // TODO: OPCODE 0x1C NOT SUPPORTED
- NULL, // TODO: OPCODE 0x1D NOT SUPPORTED
- NULL, // TODO: OPCODE 0x1E NOT SUPPORTED
- NULL, // TODO: OPCODE 0x1F NOT SUPPORTED
+ Soft386OpcodeAdcByteModrm,
+ Soft386OpcodeAdcModrm,
+ Soft386OpcodeAdcByteModrm,
+ Soft386OpcodeAdcModrm,
+ Soft386OpcodeAdcAl,
+ Soft386OpcodeAdcEax,
+ Soft386OpcodePushSs,
+ Soft386OpcodePopSs,
+ Soft386OpcodeSbbByteModrm,
+ Soft386OpcodeSbbModrm,
+ Soft386OpcodeSbbByteModrm,
+ Soft386OpcodeSbbModrm,
+ Soft386OpcodeSbbAl,
+ Soft386OpcodeSbbEax,
+ Soft386OpcodePushDs,
+ Soft386OpcodePopDs,
Soft386OpcodeAndByteModrm,
Soft386OpcodeAndModrm,
Soft386OpcodeAndByteModrm,
Soft386OpcodeAndAl,
Soft386OpcodeAndEax,
Soft386OpcodePrefix,
- NULL, // TODO: OPCODE 0x27 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x28 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x29 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x2A NOT SUPPORTED
- NULL, // TODO: OPCODE 0x2B NOT SUPPORTED
- NULL, // TODO: OPCODE 0x2C NOT SUPPORTED
- NULL, // TODO: OPCODE 0x2D NOT SUPPORTED
+ Soft386OpcodeDaa,
+ Soft386OpcodeCmpSubByteModrm,
+ Soft386OpcodeCmpSubModrm,
+ Soft386OpcodeCmpSubByteModrm,
+ Soft386OpcodeCmpSubModrm,
+ Soft386OpcodeCmpSubAl,
+ Soft386OpcodeCmpSubEax,
Soft386OpcodePrefix,
- NULL, // TODO: OPCODE 0x2F NOT SUPPORTED
+ Soft386OpcodeDas,
Soft386OpcodeXorByteModrm,
Soft386OpcodeXorModrm,
Soft386OpcodeXorByteModrm,
Soft386OpcodeXorAl,
Soft386OpcodeXorEax,
Soft386OpcodePrefix,
- NULL, // TODO: OPCODE 0x37 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x38 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x39 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x3A NOT SUPPORTED
- NULL, // TODO: OPCODE 0x3B NOT SUPPORTED
- NULL, // TODO: OPCODE 0x3C NOT SUPPORTED
- NULL, // TODO: OPCODE 0x3D NOT SUPPORTED
+ Soft386OpcodeAaa,
+ Soft386OpcodeCmpSubByteModrm,
+ Soft386OpcodeCmpSubModrm,
+ Soft386OpcodeCmpSubByteModrm,
+ Soft386OpcodeCmpSubModrm,
+ Soft386OpcodeCmpSubAl,
+ Soft386OpcodeCmpSubEax,
Soft386OpcodePrefix,
- NULL, // TODO: OPCODE 0x3F NOT SUPPORTED
+ Soft386OpcodeAas,
Soft386OpcodeIncrement,
Soft386OpcodeIncrement,
Soft386OpcodeIncrement,
Soft386OpcodePopReg,
Soft386OpcodePopReg,
Soft386OpcodePopReg,
- NULL, // TODO: OPCODE 0x60 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x61 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x62 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x63 NOT SUPPORTED
+ Soft386OpcodePushAll,
+ Soft386OpcodePopAll,
+ Soft386OpcodeBound,
+ Soft386OpcodeArpl,
Soft386OpcodePrefix,
Soft386OpcodePrefix,
Soft386OpcodePrefix,
Soft386OpcodePrefix,
- NULL, // TODO: OPCODE 0x68 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x69 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x6A NOT SUPPORTED
- NULL, // TODO: OPCODE 0x6B NOT SUPPORTED
+ Soft386OpcodePushImm,
+ Soft386OpcodeImulModrmImm,
+ Soft386OpcodePushByteImm,
+ Soft386OpcodeImulModrmByteImm,
NULL, // TODO: OPCODE 0x6C NOT SUPPORTED
NULL, // TODO: OPCODE 0x6D NOT SUPPORTED
NULL, // TODO: OPCODE 0x6E NOT SUPPORTED
Soft386OpcodeTestModrm,
Soft386OpcodeXchgByteModrm,
Soft386OpcodeXchgModrm,
- NULL, // TODO: OPCODE 0x88 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x89 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x8A NOT SUPPORTED
- NULL, // TODO: OPCODE 0x8B NOT SUPPORTED
- NULL, // TODO: OPCODE 0x8C NOT SUPPORTED
- NULL, // TODO: OPCODE 0x8D NOT SUPPORTED
- NULL, // TODO: OPCODE 0x8E NOT SUPPORTED
+ Soft386OpcodeMovByteModrm,
+ Soft386OpcodeMovModrm,
+ Soft386OpcodeMovByteModrm,
+ Soft386OpcodeMovModrm,
+ Soft386OpcodeMovStoreSeg,
+ Soft386OpcodeLea,
+ Soft386OpcodeMovLoadSeg,
NULL, // TODO: OPCODE 0x8F NOT SUPPORTED
Soft386OpcodeNop,
Soft386OpcodeExchangeEax,
Soft386OpcodeExchangeEax,
Soft386OpcodeExchangeEax,
Soft386OpcodeExchangeEax,
- NULL, // TODO: OPCODE 0x98 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x99 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x9A NOT SUPPORTED
- NULL, // TODO: OPCODE 0x9B NOT SUPPORTED
- NULL, // TODO: OPCODE 0x9C NOT SUPPORTED
- NULL, // TODO: OPCODE 0x9D NOT SUPPORTED
- NULL, // TODO: OPCODE 0x9E NOT SUPPORTED
- NULL, // TODO: OPCODE 0x9F NOT SUPPORTED
+ Soft386OpcodeCwde,
+ Soft386OpcodeCdq,
+ Soft386OpcodeCallAbs,
+ Soft386OpcodeWait,
+ Soft386OpcodePushFlags,
+ Soft386OpcodePopFlags,
+ Soft386OpcodeSahf,
+ Soft386OpcodeLahf,
NULL, // TODO: OPCODE 0xA0 NOT SUPPORTED
NULL, // TODO: OPCODE 0xA1 NOT SUPPORTED
NULL, // TODO: OPCODE 0xA2 NOT SUPPORTED
NULL, // TODO: OPCODE 0xA5 NOT SUPPORTED
NULL, // TODO: OPCODE 0xA6 NOT SUPPORTED
NULL, // TODO: OPCODE 0xA7 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xA8 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xA9 NOT SUPPORTED
+ Soft386OpcodeTestAl,
+ Soft386OpcodeTestEax,
NULL, // TODO: OPCODE 0xAA NOT SUPPORTED
NULL, // TODO: OPCODE 0xAB NOT SUPPORTED
NULL, // TODO: OPCODE 0xAC NOT SUPPORTED
Soft386OpcodeMovRegImm,
NULL, // TODO: OPCODE 0xC0 NOT SUPPORTED
NULL, // TODO: OPCODE 0xC1 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xC2 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xC3 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xC4 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xC5 NOT SUPPORTED
+ Soft386OpcodeRetImm,
+ Soft386OpcodeRet,
+ Soft386OpcodeLes,
+ Soft386OpcodeLds,
NULL, // TODO: OPCODE 0xC6 NOT SUPPORTED
NULL, // TODO: OPCODE 0xC7 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xC8 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xC9 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xCA NOT SUPPORTED
- NULL, // TODO: OPCODE 0xCB NOT SUPPORTED
- NULL, // TODO: OPCODE 0xCC NOT SUPPORTED
- NULL, // TODO: OPCODE 0xCD NOT SUPPORTED
- NULL, // TODO: OPCODE 0xCE NOT SUPPORTED
- NULL, // TODO: OPCODE 0xCF NOT SUPPORTED
+ Soft386OpcodeEnter,
+ Soft386OpcodeLeave,
+ Soft386OpcodeRetFarImm,
+ Soft386OpcodeRetFar,
+ Soft386OpcodeInt3,
+ Soft386OpcodeInt,
+ Soft386OpcodeIntOverflow,
+ Soft386OpcodeIret,
NULL, // TODO: OPCODE 0xD0 NOT SUPPORTED
NULL, // TODO: OPCODE 0xD1 NOT SUPPORTED
NULL, // TODO: OPCODE 0xD2 NOT SUPPORTED
NULL, // TODO: OPCODE 0xD3 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xD4 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xD5 NOT SUPPORTED
+ Soft386OpcodeAam,
+ Soft386OpcodeAad,
NULL, // TODO: OPCODE 0xD6 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xD7 NOT SUPPORTED
+ Soft386OpcodeXlat,
NULL, // TODO: OPCODE 0xD8 NOT SUPPORTED
NULL, // TODO: OPCODE 0xD9 NOT SUPPORTED
NULL, // TODO: OPCODE 0xDA NOT SUPPORTED
NULL, // TODO: OPCODE 0xDD NOT SUPPORTED
NULL, // TODO: OPCODE 0xDE NOT SUPPORTED
NULL, // TODO: OPCODE 0xDF NOT SUPPORTED
- NULL, // TODO: OPCODE 0xE0 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xE1 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xE2 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xE3 NOT SUPPORTED
+ Soft386OpcodeLoopnz,
+ Soft386OpcodeLoopz,
+ Soft386OpcodeLoop,
+ Soft386OpcodeJecxz,
Soft386OpcodeInByte,
Soft386OpcodeIn,
Soft386OpcodeOutByte,
Soft386OpcodeOut,
- NULL, // TODO: OPCODE 0xE8 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xE9 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xEA NOT SUPPORTED
+ Soft386OpcodeCall,
+ Soft386OpcodeJmp,
+ Soft386OpcodeJmpAbs,
Soft386OpcodeShortJump,
Soft386OpcodeInByte,
Soft386OpcodeIn,
/* The result is discarded */
return TRUE;
}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePushEs)
+{
+ /* Call the internal API */
+ return Soft386StackPush(State, State->SegmentRegs[SOFT386_REG_ES].Selector);
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePopEs)
+{
+ ULONG NewSelector;
+
+ if (!Soft386StackPop(State, &NewSelector))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Call the internal API */
+ return Soft386LoadSegment(State, SOFT386_REG_ES, LOWORD(NewSelector));
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePushCs)
+{
+ /* Call the internal API */
+ return Soft386StackPush(State, State->SegmentRegs[SOFT386_REG_CS].Selector);
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeAdcByteModrm)
+{
+ UCHAR FirstValue, SecondValue, Result;
+ SOFT386_MOD_REG_RM ModRegRm;
+ BOOLEAN AddressSize = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+ /* Make sure this is the right instruction */
+ ASSERT((Opcode & 0xFD) == 0x10);
+
+ if (State->PrefixFlags & SOFT386_PREFIX_ADSIZE)
+ {
+ /* The ADSIZE prefix toggles the size */
+ AddressSize = !AddressSize;
+ }
+ else if (State->PrefixFlags
+ & ~(SOFT386_PREFIX_ADSIZE
+ | SOFT386_PREFIX_SEG
+ | SOFT386_PREFIX_LOCK))
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ /* Get the operands */
+ if (!Soft386ParseModRegRm(State, AddressSize, &ModRegRm))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ if (!Soft386ReadModrmByteOperands(State,
+ &ModRegRm,
+ &FirstValue,
+ &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue + SecondValue + State->Flags.Cf;
+
+ /* Special exception for CF */
+ State->Flags.Cf = State->Flags.Cf
+ && ((FirstValue == 0xFF) || (SecondValue == 0xFF));
+
+ /* Update the flags */
+ State->Flags.Cf = State->Flags.Cf || ((Result < FirstValue) && (Result < SecondValue));
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_BYTE) == (SecondValue & SIGN_FLAG_BYTE))
+ && ((FirstValue & SIGN_FLAG_BYTE) != (Result & SIGN_FLAG_BYTE));
+ State->Flags.Af = (((FirstValue & 0x0F) + (SecondValue & 0x0F)) & 0x10) ? TRUE : FALSE;
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_BYTE) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Write back the result */
+ return Soft386WriteModrmByteOperands(State,
+ &ModRegRm,
+ Opcode & SOFT386_OPCODE_WRITE_REG,
+ Result);
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeAdcModrm)
+{
+ SOFT386_MOD_REG_RM ModRegRm;
+ BOOLEAN OperandSize, AddressSize;
+
+ /* Make sure this is the right instruction */
+ ASSERT((Opcode & 0xFD) == 0x11);
+
+ OperandSize = AddressSize = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+ if (State->PrefixFlags & SOFT386_PREFIX_ADSIZE)
+ {
+ /* The ADSIZE prefix toggles the address size */
+ AddressSize = !AddressSize;
+ }
+
+ if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
+ {
+ /* The OPSIZE prefix toggles the operand size */
+ OperandSize = !OperandSize;
+ }
+
+ if (State->PrefixFlags
+ & ~(SOFT386_PREFIX_ADSIZE
+ | SOFT386_PREFIX_OPSIZE
+ | SOFT386_PREFIX_SEG
+ | SOFT386_PREFIX_LOCK))
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ /* Get the operands */
+ if (!Soft386ParseModRegRm(State, AddressSize, &ModRegRm))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Check the operand size */
+ if (OperandSize)
+ {
+ ULONG FirstValue, SecondValue, Result;
+
+ if (!Soft386ReadModrmDwordOperands(State,
+ &ModRegRm,
+ &FirstValue,
+ &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue + SecondValue + State->Flags.Cf;
+
+ /* Special exception for CF */
+ State->Flags.Cf = State->Flags.Cf
+ && ((FirstValue == 0xFFFFFFFF) || (SecondValue == 0xFFFFFFFF));
+
+ /* Update the flags */
+ State->Flags.Cf = State->Flags.Cf || ((Result < FirstValue) && (Result < SecondValue));
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_LONG) == (SecondValue & SIGN_FLAG_LONG))
+ && ((FirstValue & SIGN_FLAG_LONG) != (Result & SIGN_FLAG_LONG));
+ State->Flags.Af = (((FirstValue & 0x0F) + (SecondValue & 0x0F)) & 0x10) ? TRUE : FALSE;
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_LONG) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Write back the result */
+ return Soft386WriteModrmDwordOperands(State,
+ &ModRegRm,
+ Opcode & SOFT386_OPCODE_WRITE_REG,
+ Result);
+ }
+ else
+ {
+ USHORT FirstValue, SecondValue, Result;
+
+ if (!Soft386ReadModrmWordOperands(State,
+ &ModRegRm,
+ &FirstValue,
+ &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue + SecondValue + State->Flags.Cf;
+
+ /* Special exception for CF */
+ State->Flags.Cf = State->Flags.Cf
+ && ((FirstValue == 0xFFFF) || (SecondValue == 0xFFFF));
+
+ /* Update the flags */
+ State->Flags.Cf = State->Flags.Cf || ((Result < FirstValue) && (Result < SecondValue));
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_WORD) == (SecondValue & SIGN_FLAG_WORD))
+ && ((FirstValue & SIGN_FLAG_WORD) != (Result & SIGN_FLAG_WORD));
+ State->Flags.Af = (((FirstValue & 0x0F) + (SecondValue & 0x0F)) & 0x10) ? TRUE : FALSE;
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_WORD) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Write back the result */
+ return Soft386WriteModrmWordOperands(State,
+ &ModRegRm,
+ Opcode & SOFT386_OPCODE_WRITE_REG,
+ Result);
+ }
+
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeAdcAl)
+{
+ UCHAR FirstValue = State->GeneralRegs[SOFT386_REG_EAX].LowByte;
+ UCHAR SecondValue, Result;
+
+ /* Make sure this is the right instruction */
+ ASSERT(Opcode == 0x14);
+
+ if (State->PrefixFlags)
+ {
+ /* This opcode doesn't take any prefixes */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ if (!Soft386FetchByte(State, &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue + SecondValue + State->Flags.Cf;
+
+ /* Special exception for CF */
+ State->Flags.Cf = State->Flags.Cf &&
+ ((FirstValue == 0xFF) || (SecondValue == 0xFF));
+
+ /* Update the flags */
+ State->Flags.Cf = State->Flags.Cf || ((Result < FirstValue) && (Result < SecondValue));
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_BYTE) == (SecondValue & SIGN_FLAG_BYTE))
+ && ((FirstValue & SIGN_FLAG_BYTE) != (Result & SIGN_FLAG_BYTE));
+ State->Flags.Af = (((FirstValue & 0x0F) + (SecondValue & 0x0F)) & 0x10) ? TRUE : FALSE;
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_BYTE) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Write back the result */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte = Result;
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeAdcEax)
+{
+ BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+ /* Make sure this is the right instruction */
+ ASSERT(Opcode == 0x15);
+
+ if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
+ {
+ /* The OPSIZE prefix toggles the size */
+ Size = !Size;
+ }
+ else
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ if (Size)
+ {
+ ULONG FirstValue = State->GeneralRegs[SOFT386_REG_EAX].Long;
+ ULONG SecondValue, Result;
+
+ if (!Soft386FetchDword(State, &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue + SecondValue + State->Flags.Cf;
+
+ /* Special exception for CF */
+ State->Flags.Cf = State->Flags.Cf &&
+ ((FirstValue == 0xFFFFFFFF) || (SecondValue == 0xFFFFFFFF));
+
+ /* Update the flags */
+ State->Flags.Cf = State->Flags.Cf || ((Result < FirstValue) && (Result < SecondValue));
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_LONG) == (SecondValue & SIGN_FLAG_LONG))
+ && ((FirstValue & SIGN_FLAG_LONG) != (Result & SIGN_FLAG_LONG));
+ State->Flags.Af = (((FirstValue & 0x0F) + (SecondValue & 0x0F)) & 0x10) ? TRUE : FALSE;
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_LONG) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Write back the result */
+ State->GeneralRegs[SOFT386_REG_EAX].Long = Result;
+ }
+ else
+ {
+ USHORT FirstValue = State->GeneralRegs[SOFT386_REG_EAX].LowWord;
+ USHORT SecondValue, Result;
+
+ if (!Soft386FetchWord(State, &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue + SecondValue + State->Flags.Cf;
+
+ /* Special exception for CF */
+ State->Flags.Cf = State->Flags.Cf &&
+ ((FirstValue == 0xFFFF) || (SecondValue == 0xFFFF));
+
+ /* Update the flags */
+ State->Flags.Cf = State->Flags.Cf || ((Result < FirstValue) && (Result < SecondValue));
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_WORD) == (SecondValue & SIGN_FLAG_WORD))
+ && ((FirstValue & SIGN_FLAG_WORD) != (Result & SIGN_FLAG_WORD));
+ State->Flags.Af = (((FirstValue & 0x0F) + (SecondValue & 0x0F)) & 0x10) ? TRUE : FALSE;
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_WORD) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Write back the result */
+ State->GeneralRegs[SOFT386_REG_EAX].LowWord = Result;
+ }
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePushSs)
+{
+ /* Call the internal API */
+ return Soft386StackPush(State, State->SegmentRegs[SOFT386_REG_SS].Selector);
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePopSs)
+{
+ ULONG NewSelector;
+
+ if (!Soft386StackPop(State, &NewSelector))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Call the internal API */
+ return Soft386LoadSegment(State, SOFT386_REG_SS, LOWORD(NewSelector));
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeSbbByteModrm)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeSbbModrm)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeSbbAl)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeSbbEax)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePushDs)
+{
+ /* Call the internal API */
+ return Soft386StackPush(State, State->SegmentRegs[SOFT386_REG_DS].Selector);
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePopDs)
+{
+ ULONG NewSelector;
+
+ if (!Soft386StackPop(State, &NewSelector))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Call the internal API */
+ return Soft386LoadSegment(State, SOFT386_REG_DS, LOWORD(NewSelector));
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeDaa)
+{
+ UCHAR Value = State->GeneralRegs[SOFT386_REG_EAX].LowByte;
+ BOOLEAN Carry = State->Flags.Cf;
+
+ /* Clear the carry flag */
+ State->Flags.Cf = FALSE;
+
+ /* Check if the first BCD digit is invalid or there was a carry from it */
+ if (((Value & 0x0F) > 9) || State->Flags.Af)
+ {
+ /* Correct it */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte += 0x06;
+ if (State->GeneralRegs[SOFT386_REG_EAX].LowByte < 0x06)
+ {
+ /* A carry occurred */
+ State->Flags.Cf = TRUE;
+ }
+
+ /* Set the adjust flag */
+ State->Flags.Af = TRUE;
+ }
+
+ /* Check if the second BCD digit is invalid or there was a carry from it */
+ if ((Value > 0x99) || Carry)
+ {
+ /* Correct it */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte += 0x60;
+
+ /* There was a carry */
+ State->Flags.Cf = TRUE;
+ }
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeCmpSubByteModrm)
+{
+ UCHAR FirstValue, SecondValue, Result;
+ SOFT386_MOD_REG_RM ModRegRm;
+ BOOLEAN AddressSize = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+ /* Make sure this is the right instruction */
+ ASSERT((Opcode & 0xED) == 0x28);
+
+ if (State->PrefixFlags & SOFT386_PREFIX_ADSIZE)
+ {
+ /* The ADSIZE prefix toggles the size */
+ AddressSize = !AddressSize;
+ }
+ else if (State->PrefixFlags
+ & ~(SOFT386_PREFIX_ADSIZE
+ | SOFT386_PREFIX_SEG
+ | SOFT386_PREFIX_LOCK))
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ /* Get the operands */
+ if (!Soft386ParseModRegRm(State, AddressSize, &ModRegRm))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ if (!Soft386ReadModrmByteOperands(State,
+ &ModRegRm,
+ &FirstValue,
+ &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Check if this is the instruction that writes to R/M */
+ if (!(Opcode & SOFT386_OPCODE_WRITE_REG))
+ {
+ /* Swap the order */
+ FirstValue ^= SecondValue;
+ SecondValue ^= FirstValue;
+ FirstValue ^= SecondValue;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue - SecondValue;
+
+ /* Update the flags */
+ State->Flags.Cf = FirstValue < SecondValue;
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_BYTE) != (SecondValue & SIGN_FLAG_BYTE))
+ && ((FirstValue & SIGN_FLAG_BYTE) != (Result & SIGN_FLAG_BYTE));
+ State->Flags.Af = (FirstValue & 0x0F) < (SecondValue & 0x0F);
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_BYTE) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Check if this is not a CMP */
+ if (!(Opcode & 0x10))
+ {
+ /* Write back the result */
+ return Soft386WriteModrmByteOperands(State,
+ &ModRegRm,
+ Opcode & SOFT386_OPCODE_WRITE_REG,
+ Result);
+ }
+ else
+ {
+ /* Discard the result */
+ return TRUE;
+ }
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeCmpSubModrm)
+{
+ SOFT386_MOD_REG_RM ModRegRm;
+ BOOLEAN OperandSize, AddressSize;
+
+ /* Make sure this is the right instruction */
+ ASSERT((Opcode & 0xED) == 0x29);
+
+ OperandSize = AddressSize = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+ if (State->PrefixFlags & SOFT386_PREFIX_ADSIZE)
+ {
+ /* The ADSIZE prefix toggles the address size */
+ AddressSize = !AddressSize;
+ }
+
+ if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
+ {
+ /* The OPSIZE prefix toggles the operand size */
+ OperandSize = !OperandSize;
+ }
+
+ if (State->PrefixFlags
+ & ~(SOFT386_PREFIX_ADSIZE
+ | SOFT386_PREFIX_OPSIZE
+ | SOFT386_PREFIX_SEG
+ | SOFT386_PREFIX_LOCK))
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ /* Get the operands */
+ if (!Soft386ParseModRegRm(State, AddressSize, &ModRegRm))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Check the operand size */
+ if (OperandSize)
+ {
+ ULONG FirstValue, SecondValue, Result;
+
+ if (!Soft386ReadModrmDwordOperands(State,
+ &ModRegRm,
+ &FirstValue,
+ &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Check if this is the instruction that writes to R/M */
+ if (!(Opcode & SOFT386_OPCODE_WRITE_REG))
+ {
+ /* Swap the order */
+ FirstValue ^= SecondValue;
+ SecondValue ^= FirstValue;
+ FirstValue ^= SecondValue;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue - SecondValue;
+
+ /* Update the flags */
+ State->Flags.Cf = FirstValue < SecondValue;
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_LONG) != (SecondValue & SIGN_FLAG_LONG))
+ && ((FirstValue & SIGN_FLAG_LONG) != (Result & SIGN_FLAG_LONG));
+ State->Flags.Af = (FirstValue & 0x0F) < (SecondValue & 0x0F);
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_LONG) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Check if this is not a CMP */
+ if (!(Opcode & 0x10))
+ {
+ /* Write back the result */
+ return Soft386WriteModrmDwordOperands(State,
+ &ModRegRm,
+ Opcode & SOFT386_OPCODE_WRITE_REG,
+ Result);
+ }
+ else
+ {
+ /* Discard the result */
+ return TRUE;
+ }
+ }
+ else
+ {
+ USHORT FirstValue, SecondValue, Result;
+
+ if (!Soft386ReadModrmWordOperands(State,
+ &ModRegRm,
+ &FirstValue,
+ &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Check if this is the instruction that writes to R/M */
+ if (!(Opcode & SOFT386_OPCODE_WRITE_REG))
+ {
+ /* Swap the order */
+ FirstValue ^= SecondValue;
+ SecondValue ^= FirstValue;
+ FirstValue ^= SecondValue;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue - SecondValue;
+
+ /* Update the flags */
+ State->Flags.Cf = FirstValue < SecondValue;
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_WORD) != (SecondValue & SIGN_FLAG_WORD))
+ && ((FirstValue & SIGN_FLAG_WORD) != (Result & SIGN_FLAG_WORD));
+ State->Flags.Af = (FirstValue & 0x0F) < (SecondValue & 0x0F);
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_WORD) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Check if this is not a CMP */
+ if (!(Opcode & 0x10))
+ {
+ /* Write back the result */
+ return Soft386WriteModrmWordOperands(State,
+ &ModRegRm,
+ Opcode & SOFT386_OPCODE_WRITE_REG,
+ Result);
+ }
+ else
+ {
+ /* Discard the result */
+ return TRUE;
+ }
+ }
+
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeCmpSubAl)
+{
+ UCHAR FirstValue = State->GeneralRegs[SOFT386_REG_EAX].LowByte;
+ UCHAR SecondValue, Result;
+
+ /* Make sure this is the right instruction */
+ ASSERT((Opcode & 0xEF) == 0x2C);
+
+ if (State->PrefixFlags)
+ {
+ /* This opcode doesn't take any prefixes */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ if (!Soft386FetchByte(State, &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue - SecondValue;
+
+ /* Update the flags */
+ State->Flags.Cf = FirstValue < SecondValue;
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_BYTE) != (SecondValue & SIGN_FLAG_BYTE))
+ && ((FirstValue & SIGN_FLAG_BYTE) != (Result & SIGN_FLAG_BYTE));
+ State->Flags.Af = (FirstValue & 0x0F) < (SecondValue & 0x0F);
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_BYTE) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Check if this is not a CMP */
+ if (!(Opcode & 0x10))
+ {
+ /* Write back the result */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte = Result;
+ }
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeCmpSubEax)
+{
+ BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+ /* Make sure this is the right instruction */
+ ASSERT((Opcode & 0xEF) == 0x2D);
+
+ if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
+ {
+ /* The OPSIZE prefix toggles the size */
+ Size = !Size;
+ }
+ else
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ if (Size)
+ {
+ ULONG FirstValue = State->GeneralRegs[SOFT386_REG_EAX].Long;
+ ULONG SecondValue, Result;
+
+ if (!Soft386FetchDword(State, &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue - SecondValue;
+
+ /* Update the flags */
+ State->Flags.Cf = FirstValue < SecondValue;
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_LONG) != (SecondValue & SIGN_FLAG_LONG))
+ && ((FirstValue & SIGN_FLAG_LONG) != (Result & SIGN_FLAG_LONG));
+ State->Flags.Af = (FirstValue & 0x0F) < (SecondValue & 0x0F);
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_LONG) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Check if this is not a CMP */
+ if (!(Opcode & 0x10))
+ {
+ /* Write back the result */
+ State->GeneralRegs[SOFT386_REG_EAX].Long = Result;
+ }
+ }
+ else
+ {
+ USHORT FirstValue = State->GeneralRegs[SOFT386_REG_EAX].LowWord;
+ USHORT SecondValue, Result;
+
+ if (!Soft386FetchWord(State, &SecondValue))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Calculate the result */
+ Result = FirstValue - SecondValue;
+
+ /* Update the flags */
+ State->Flags.Cf = FirstValue < SecondValue;
+ State->Flags.Of = ((FirstValue & SIGN_FLAG_WORD) != (SecondValue & SIGN_FLAG_WORD))
+ && ((FirstValue & SIGN_FLAG_WORD) != (Result & SIGN_FLAG_WORD));
+ State->Flags.Af = (FirstValue & 0x0F) < (SecondValue & 0x0F);
+ State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
+ State->Flags.Sf = (Result & SIGN_FLAG_WORD) ? TRUE : FALSE;
+ State->Flags.Pf = Soft386CalculateParity(Result);
+
+ /* Write back the result */
+ State->GeneralRegs[SOFT386_REG_EAX].LowWord = Result;
+ }
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeDas)
+{
+ UCHAR Value = State->GeneralRegs[SOFT386_REG_EAX].LowByte;
+ BOOLEAN Carry = State->Flags.Cf;
+
+ /* Clear the carry flag */
+ State->Flags.Cf = FALSE;
+
+ /* Check if the first BCD digit is invalid or there was a borrow */
+ if (((Value & 0x0F) > 9) || State->Flags.Af)
+ {
+ /* Correct it */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte -= 0x06;
+ if (State->GeneralRegs[SOFT386_REG_EAX].LowByte > 0xFB)
+ {
+ /* A borrow occurred */
+ State->Flags.Cf = TRUE;
+ }
+
+ /* Set the adjust flag */
+ State->Flags.Af = TRUE;
+ }
+
+ /* Check if the second BCD digit is invalid or there was a borrow */
+ if ((Value > 0x99) || Carry)
+ {
+ /* Correct it */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte -= 0x60;
+
+ /* There was a borrow */
+ State->Flags.Cf = TRUE;
+ }
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeAaa)
+{
+ UCHAR Value = State->GeneralRegs[SOFT386_REG_EAX].LowByte;
+
+ /*
+ * Check if the value in AL is not a valid BCD digit,
+ * or there was a carry from the lowest 4 bits of AL
+ */
+ if (((Value & 0x0F) > 9) || State->Flags.Af)
+ {
+ /* Correct it */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte += 0x06;
+ State->GeneralRegs[SOFT386_REG_EAX].HighByte++;
+
+ /* Set CF and AF */
+ State->Flags.Cf = State->Flags.Af = TRUE;
+ }
+ else
+ {
+ /* Clear CF and AF */
+ State->Flags.Cf = State->Flags.Af = FALSE;
+ }
+
+ /* Keep only the lowest 4 bits of AL */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte &= 0x0F;
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeAas)
+{
+ UCHAR Value = State->GeneralRegs[SOFT386_REG_EAX].LowByte;
+
+ /*
+ * Check if the value in AL is not a valid BCD digit,
+ * or there was a borrow from the lowest 4 bits of AL
+ */
+ if (((Value & 0x0F) > 9) || State->Flags.Af)
+ {
+ /* Correct it */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte -= 0x06;
+ State->GeneralRegs[SOFT386_REG_EAX].HighByte--;
+
+ /* Set CF and AF */
+ State->Flags.Cf = State->Flags.Af = TRUE;
+ }
+ else
+ {
+ /* Clear CF and AF */
+ State->Flags.Cf = State->Flags.Af = FALSE;
+ }
+
+ /* Keep only the lowest 4 bits of AL */
+ State->GeneralRegs[SOFT386_REG_EAX].LowByte &= 0x0F;
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePushAll)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePopAll)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeBound)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeArpl)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePushImm)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeImulModrmImm)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePushByteImm)
+{
+ UCHAR Data;
+
+ if (!Soft386FetchByte(State, &Data))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Call the internal API */
+ return Soft386StackPush(State, Data);
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeImulModrmByteImm)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeMovByteModrm)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeMovModrm)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeMovStoreSeg)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeLea)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeMovLoadSeg)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeCwde)
+{
+ BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+ /* Make sure this is the right instruction */
+ ASSERT(Opcode == 0x98);
+
+ if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
+ {
+ /* The OPSIZE prefix toggles the size */
+ Size = !Size;
+ }
+ else if (State->PrefixFlags != 0)
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ if (Size)
+ {
+ /* Sign extend AX to EAX */
+ State->GeneralRegs[SOFT386_REG_EAX].Long = MAKELONG
+ (
+ State->GeneralRegs[SOFT386_REG_EAX].LowWord,
+ (State->GeneralRegs[SOFT386_REG_EAX].LowWord & SIGN_FLAG_WORD)
+ ? 0xFFFF : 0x0000
+ );
+ }
+ else
+ {
+ /* Sign extend AL to AX */
+ State->GeneralRegs[SOFT386_REG_EAX].HighByte =
+ (State->GeneralRegs[SOFT386_REG_EAX].LowByte & SIGN_FLAG_BYTE)
+ ? 0xFF : 0x00;
+ }
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeCdq)
+{
+ BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+ /* Make sure this is the right instruction */
+ ASSERT(Opcode == 0x99);
+
+ if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
+ {
+ /* The OPSIZE prefix toggles the size */
+ Size = !Size;
+ }
+ else if (State->PrefixFlags != 0)
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ if (Size)
+ {
+ /* Sign extend EAX to EDX:EAX */
+ State->GeneralRegs[SOFT386_REG_EDX].Long =
+ (State->GeneralRegs[SOFT386_REG_EAX].Long & SIGN_FLAG_LONG)
+ ? 0xFFFFFFFF : 0x00000000;
+ }
+ else
+ {
+ /* Sign extend AX to DX:AX */
+ State->GeneralRegs[SOFT386_REG_EDX].LowWord =
+ (State->GeneralRegs[SOFT386_REG_EAX].LowWord & SIGN_FLAG_WORD)
+ ? 0xFFFF : 0x0000;
+ }
+
+ return TRUE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeCallAbs)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeWait)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePushFlags)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodePopFlags)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeSahf)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeLahf)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeRetImm)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeRet)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeLes)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeLds)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeEnter)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeLeave)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeRetFarImm)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeRetFar)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeInt3)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeInt)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeIntOverflow)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeIret)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeAam)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeAad)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeXlat)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeLoopnz)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeLoopz)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeLoop)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeJecxz)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeCall)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeJmp)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
+
+SOFT386_OPCODE_HANDLER(Soft386OpcodeJmpAbs)
+{
+ // TODO: NOT IMPLEMENTED
+ UNIMPLEMENTED;
+
+ return FALSE;
+}
projects / reactos.git / commitdiff