Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-07-31 21:01:54 +00:00
Code Issues Projects Releases Packages Wiki Activity

[FAST486]

Browse source 
FPU exceptions are delayed until the next non-control FPU instruction.


svn path=/trunk/; revision=68125
This commit is contained in:
Aleksandar Andrejevic 2015-06-13 23:12:55 +00:00
parent 84d963d77a
commit cecde584e8
3 changed files with 95 additions and 110 deletions
Download patch file Download diff file Expand all files Collapse all files

30
reactos/lib/fast486/common.inl
View file

@ -1604,17 +1604,26 @@ Fast486WriteModrmDwordOperands(PFAST486_STATE State,
FORCEINLINE
VOID
FASTCALL
Fast486FpuException(PFAST486_STATE State)
Fast486FpuExceptionCheck(PFAST486_STATE State)
{
if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_NE)
/* Check if an unmasked exception occurred */
if ((State->FpuStatus.Ie && !State->FpuControl.Im)
|| (State->FpuStatus.De && !State->FpuControl.Dm)
|| (State->FpuStatus.Ze && !State->FpuControl.Zm)
|| (State->FpuStatus.Oe && !State->FpuControl.Om)
|| (State->FpuStatus.Ue && !State->FpuControl.Um)
|| (State->FpuStatus.Pe && !State->FpuControl.Pm))
{
/* Call the #MF handler */
Fast486Exception(State, FAST486_EXCEPTION_MF);
}
else
{
/* Use the external interrupt */
State->FpuCallback(State);
if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_NE)
{
/* Call the #MF handler */
Fast486Exception(State, FAST486_EXCEPTION_MF);
}
else
{
/* Use the external interrupt */
State->FpuCallback(State);
}
}
}
@ -1654,7 +1663,6 @@ Fast486FpuNormalize(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -1695,7 +1703,6 @@ Fast486FpuPush(PFAST486_STATE State,
/* Set the C1 condition code bit (stack overflow) */
State->FpuStatus.Code1 = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
return FALSE;
}
}
@ -1720,7 +1727,6 @@ Fast486FpuPop(PFAST486_STATE State)
/* Clear the C1 condition code bit (stack underflow) */
State->FpuStatus.Code1 = FALSE;
if (!State->FpuControl.Im) Fast486FpuException(State);
return FALSE;
}
}

163
reactos/lib/fast486/fpu.c
View file

@ -490,7 +490,6 @@ Fast486FpuToInteger(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -589,7 +588,6 @@ Fast486FpuToSingleReal(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -608,7 +606,6 @@ Fast486FpuToSingleReal(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -688,7 +685,6 @@ Fast486FpuToDoubleReal(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -707,7 +703,6 @@ Fast486FpuToDoubleReal(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -803,7 +798,6 @@ Fast486FpuAdd(PFAST486_STATE State,
if (!State->FpuControl.Dm)
{
Fast486FpuException(State);
return FALSE;
}
}
@ -897,7 +891,6 @@ Fast486FpuAdd(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -1049,7 +1042,6 @@ Fast486FpuMultiply(PFAST486_STATE State,
if (!State->FpuControl.Dm)
{
Fast486FpuException(State);
return FALSE;
}
}
@ -1072,7 +1064,6 @@ Fast486FpuMultiply(PFAST486_STATE State,
if (!State->FpuControl.Um)
{
Fast486FpuException(State);
return FALSE;
}
@ -1090,7 +1081,6 @@ Fast486FpuMultiply(PFAST486_STATE State,
if (!State->FpuControl.Om)
{
Fast486FpuException(State);
return FALSE;
}
@ -1139,7 +1129,6 @@ Fast486FpuDivide(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -1159,7 +1148,6 @@ Fast486FpuDivide(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -1299,7 +1287,6 @@ Fast486FpuCalculateLogBase2(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -1315,7 +1302,6 @@ Fast486FpuCalculateLogBase2(PFAST486_STATE State,
if (!State->FpuControl.Dm)
{
Fast486FpuException(State);
return FALSE;
}
@ -1590,7 +1576,6 @@ Fast486FpuCalculateSquareRoot(PFAST486_STATE State,
}
else
{
Fast486FpuException(State);
return FALSE;
}
}
@ -1842,6 +1827,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD8)
#ifndef FAST486_NO_FPU
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY)
@ -1858,7 +1844,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD8)
FPU_SET_TAG(0, FPU_TAG_SPECIAL);
}
else Fast486FpuException(State);
return;
}
@ -1895,7 +1880,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD8)
FPU_SET_TAG(0, FPU_TAG_SPECIAL);
}
else Fast486FpuException(State);
return;
}
@ -1940,6 +1924,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
ULONG Value;
FAST486_FPU_DATA_REG MemoryData;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
FPU_SAVE_LAST_OPERAND();
@ -1962,6 +1947,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
{
ULONG Value = FPU_REAL4_INDEFINITE;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
FPU_SAVE_LAST_OPERAND();
@ -1972,7 +1958,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
if (!State->FpuControl.Im)
{
Fast486FpuException(State);
return;
}
}
@ -2050,6 +2035,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
case 0x06:
case 0x07:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(ModRegRm.SecondRegister) == FPU_TAG_EMPTY)
{
/* Raise the invalid operation exception */
@ -2057,7 +2045,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
if (!State->FpuControl.Im)
{
Fast486FpuException(State);
return;
}
}
@ -2078,12 +2065,13 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
{
FAST486_FPU_DATA_REG Temp;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if ((FPU_GET_TAG(0) == FPU_TAG_EMPTY)
|| FPU_GET_TAG(ModRegRm.SecondRegister) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2115,6 +2103,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
case 0x1E:
case 0x1F:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
FPU_ST(ModRegRm.SecondRegister) = FPU_ST(0);
FPU_UPDATE_TAG(ModRegRm.SecondRegister);
@ -2125,11 +2116,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FCHS */
case 0x20:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2142,11 +2134,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FABS */
case 0x21:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2159,6 +2152,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FTST */
case 0x24:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
Fast486FpuCompare(State, &FPU_ST(0), &FpuZero);
break;
}
@ -2166,6 +2162,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FXAM */
case 0x25:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
/* The sign bit goes in C1, even if the register's empty */
State->FpuStatus.Code1 = FPU_ST(0).Sign;
@ -2241,6 +2240,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
&FpuZero
};
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
Fast486FpuPush(State, Constants[ModRegRm.SecondRegister]);
break;
}
@ -2248,13 +2250,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* F2XM1 */
case 0x30:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2264,7 +2265,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
if (!State->FpuControl.Dm)
{
Fast486FpuException(State);
break;
}
}
@ -2280,11 +2280,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
{
FAST486_FPU_DATA_REG Logarithm;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY || FPU_GET_TAG(1) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2314,6 +2315,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
FAST486_FPU_DATA_REG Cosine;
ULONGLONG Quadrant;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
/* Compute the sine */
if (!Fast486FpuCalculateSine(State, &FPU_ST(0), &Sine)) break;
@ -2351,6 +2355,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FPATAN */
case 0x33:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (!Fast486FpuCalculateArcTangent(State,
&FPU_ST(1),
&FPU_ST(0),
@ -2370,12 +2377,13 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
{
FAST486_FPU_DATA_REG Value = FPU_ST(0);
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if ((FPU_GET_TAG(0) == FPU_TAG_EMPTY) || FPU_IS_INDEFINITE(&Value))
{
State->FpuStatus.Ie = TRUE;
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY) State->FpuStatus.Sf = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2411,11 +2419,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FPREM1 */
case 0x35:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY || FPU_GET_TAG(1) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2442,11 +2451,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FPREM */
case 0x38:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY || FPU_GET_TAG(1) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2461,11 +2471,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
{
FAST486_FPU_DATA_REG Value, Logarithm;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY || FPU_GET_TAG(1) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2497,6 +2508,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FSQRT */
case 0x3A:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
Fast486FpuCalculateSquareRoot(State, &FPU_ST(0), &FPU_ST(0));
FPU_UPDATE_TAG(0);
@ -2507,13 +2521,13 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
case 0x3B:
{
FAST486_FPU_DATA_REG Number = FPU_ST(0);
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2523,7 +2537,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
if (!State->FpuControl.Dm)
{
Fast486FpuException(State);
break;
}
}
@ -2544,11 +2557,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
{
LONGLONG Result = 0LL;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2558,7 +2572,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
if (!State->FpuControl.Dm)
{
Fast486FpuException(State);
break;
}
}
@ -2571,8 +2584,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
Fast486FpuFromInteger(State, Result, &FPU_ST(0));
State->FpuStatus.Pe = TRUE;
if (!State->FpuControl.Pm) Fast486FpuException(State);
break;
}
@ -2583,13 +2594,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
LONGLONG UnbiasedExp = (LONGLONG)((SHORT)FPU_ST(0).Exponent) - FPU_REAL10_BIAS;
INT OldRoundingMode = State->FpuControl.Rc;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY || FPU_GET_TAG(1) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2599,7 +2609,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
if (!State->FpuControl.Dm)
{
Fast486FpuException(State);
break;
}
}
@ -2630,10 +2639,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
FPU_ST(0) = FpuZero;
FPU_UPDATE_TAG(0);
}
else
{
Fast486FpuException(State);
}
break;
}
@ -2651,10 +2656,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
FPU_ST(0).Exponent = FPU_MAX_EXPONENT + 1;
FPU_UPDATE_TAG(0);
}
else
{
Fast486FpuException(State);
}
break;
}
@ -2668,13 +2669,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FSIN */
case 0x3E:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2684,7 +2684,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
if (!State->FpuControl.Dm)
{
Fast486FpuException(State);
break;
}
}
@ -2698,13 +2697,12 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
/* FCOS */
case 0x3F:
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (FPU_GET_TAG(0) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -2714,7 +2712,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
if (!State->FpuControl.Dm)
{
Fast486FpuException(State);
break;
}
}
@ -2759,6 +2756,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDA)
#ifndef FAST486_NO_FPU
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (!ModRegRm.Memory)
@ -2774,8 +2772,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDA)
{
/* Raise the invalid operation exception*/
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
return;
}
@ -2812,7 +2808,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDA)
FPU_SET_TAG(0, FPU_TAG_SPECIAL);
}
else Fast486FpuException(State);
return;
}
@ -2845,6 +2840,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
if (ModRegRm.Memory)
{
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
FPU_SAVE_LAST_OPERAND();
@ -2882,7 +2878,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
if (!State->FpuControl.Im)
{
Fast486FpuException(State);
return;
}
}
@ -2904,7 +2899,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
}
else
{
Fast486FpuException(State);
return;
}
}
@ -2973,7 +2967,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
}
else
{
Fast486FpuException(State);
return;
}
}
@ -3081,6 +3074,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDC)
#ifndef FAST486_NO_FPU
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
if (ModRegRm.Memory)
@ -3101,7 +3095,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDC)
FPU_SET_TAG(0, FPU_TAG_SPECIAL);
}
else Fast486FpuException(State);
return;
}
@ -3144,7 +3137,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDC)
FPU_SET_TAG(ModRegRm.SecondRegister, FPU_TAG_SPECIAL);
}
else Fast486FpuException(State);
return;
}
@ -3186,6 +3178,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
ULONGLONG Value;
FAST486_FPU_DATA_REG MemoryData;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
FPU_SAVE_LAST_OPERAND();
@ -3214,6 +3207,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
{
ULONGLONG Value = FPU_REAL8_INDEFINITE;
Fast486FpuExceptionCheck(State);
FPU_SAVE_LAST_INST();
FPU_SAVE_LAST_OPERAND();
@ -3224,7 +3218,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
if (!State->FpuControl.Im)
{
Fast486FpuException(State);
return;
}
}
@ -3352,8 +3345,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
}
else
{
FPU_SAVE_LAST_INST();
switch (ModRegRm.Register)
{
/* FFREE */
@ -3368,12 +3359,13 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
{
FAST486_FPU_DATA_REG Temp;
FPU_SAVE_LAST_INST();
Fast486FpuExceptionCheck(State);
if ((FPU_GET_TAG(0) == FPU_TAG_EMPTY)
|| FPU_GET_TAG(ModRegRm.SecondRegister) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}
@ -3393,6 +3385,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
/* FSTP */
case 3:
{
FPU_SAVE_LAST_INST();
Fast486FpuExceptionCheck(State);
FPU_ST(ModRegRm.SecondRegister) = FPU_ST(0);
FPU_UPDATE_TAG(ModRegRm.SecondRegister);
@ -3405,12 +3400,13 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
/* FUCOMP */
case 5:
{
FPU_SAVE_LAST_INST();
Fast486FpuExceptionCheck(State);
if ((FPU_GET_TAG(0) == FPU_TAG_EMPTY)
|| (FPU_GET_TAG(ModRegRm.SecondRegister) == FPU_TAG_EMPTY))
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
return;
}
@ -3454,6 +3450,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDE)
#ifndef FAST486_NO_FPU
FPU_SAVE_LAST_INST();
Fast486FpuExceptionCheck(State);
if (ModRegRm.Memory)
{
@ -3473,7 +3470,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDE)
FPU_SET_TAG(0, FPU_TAG_SPECIAL);
}
else Fast486FpuException(State);
return;
}
@ -3508,8 +3504,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDE)
{
/* Raise the invalid operation exception, if unmasked */
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
return;
}
}
@ -3540,6 +3534,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDF)
#ifndef FAST486_NO_FPU
FPU_SAVE_LAST_INST();
Fast486FpuExceptionCheck(State);
if (ModRegRm.Memory)
{
@ -3579,7 +3574,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDF)
if (!State->FpuControl.Im)
{
Fast486FpuException(State);
return;
}
}
@ -3602,7 +3596,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDF)
}
else
{
Fast486FpuException(State);
return;
}
}
@ -3682,7 +3675,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDF)
if (!State->FpuControl.Im)
{
Fast486FpuException(State);
return;
}
}
@ -3719,7 +3711,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDF)
if (!State->FpuControl.Im)
{
Fast486FpuException(State);
return;
}
}
@ -3776,8 +3767,6 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDF)
|| FPU_GET_TAG(ModRegRm.SecondRegister) == FPU_TAG_EMPTY)
{
State->FpuStatus.Ie = TRUE;
if (!State->FpuControl.Im) Fast486FpuException(State);
break;
}

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

@ -3974,17 +3974,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeCallAbs)
FAST486_OPCODE_HANDLER(Fast486OpcodeWait)
{
#ifndef FAST486_NO_FPU
if ((!State->FpuControl.Pm && State->FpuStatus.Pe)
|| (!State->FpuControl.Um && State->FpuStatus.Ue)
|| (!State->FpuControl.Om && State->FpuStatus.Oe)
|| (!State->FpuControl.Zm && State->FpuStatus.Ze)
|| (!State->FpuControl.Dm && State->FpuStatus.De)
|| (!State->FpuControl.Im && State->FpuStatus.Ie))
{
Fast486FpuException(State);
}
Fast486FpuExceptionCheck(State);
#endif
}