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Update ASoftFallback.cs

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LDj3SNuD 2018-08-03 01:36:59 +02:00 • committed by GitHub
parent 2a043101aa
commit cdbcc4faa0
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1 changed files with 52 additions and 41 deletions
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93
ChocolArm64/Instruction/ASoftFallback.cs
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@ -1,3 +1,4 @@
using ChocolArm64.State;
using ChocolArm64.Translation;
using System;
@ -10,92 +11,85 @@ namespace ChocolArm64.Instruction
Context.EmitCall(typeof(ASoftFallback), MthdName);
}
public static bool BinarySignedSatQAdd_Sat(long op1, long op2) => BinarySignedSatQAdd(op1, op2).Item1;
public static long BinarySignedSatQAdd_Res(long op1, long op2) => BinarySignedSatQAdd(op1, op2).Item2;
public static bool BinaryUnsignedSatQAdd_Sat(ulong op1, ulong op2) => BinaryUnsignedSatQAdd(op1, op2).Item1;
public static ulong BinaryUnsignedSatQAdd_Res(ulong op1, ulong op2) => BinaryUnsignedSatQAdd(op1, op2).Item2;
private static (bool, long) BinarySignedSatQAdd(long op1, long op2)
public static long BinarySignedSatQAdd(long op1, long op2, AThreadState State)
{
long Add = op1 + op2;
if ((~(op1 ^ op2) & (op1 ^ Add)) < 0L)
{
SetFpsrQCFlag(State);
if (op1 < 0L)
{
return (true, long.MinValue);
return long.MinValue;
}
else
{
return (true, long.MaxValue);
return long.MaxValue;
}
}
else
{
return (false, Add);
return Add;
}
}
private static (bool, ulong) BinaryUnsignedSatQAdd(ulong op1, ulong op2)
public static ulong BinaryUnsignedSatQAdd(ulong op1, ulong op2, AThreadState State)
{
ulong Add = op1 + op2;
if ((Add < op1) && (Add < op2))
{
return (true, ulong.MaxValue);
SetFpsrQCFlag(State);
return ulong.MaxValue;
}
else
{
return (false, Add);
return Add;
}
}
public static bool BinarySignedSatQSub_Sat(long op1, long op2) => BinarySignedSatQSub(op1, op2).Item1;
public static long BinarySignedSatQSub_Res(long op1, long op2) => BinarySignedSatQSub(op1, op2).Item2;
public static bool BinaryUnsignedSatQSub_Sat(ulong op1, ulong op2) => BinaryUnsignedSatQSub(op1, op2).Item1;
public static ulong BinaryUnsignedSatQSub_Res(ulong op1, ulong op2) => BinaryUnsignedSatQSub(op1, op2).Item2;
private static (bool, long) BinarySignedSatQSub(long op1, long op2)
public static long BinarySignedSatQSub(long op1, long op2, AThreadState State)
{
long Sub = op1 - op2;
if (((op1 ^ op2) & (op1 ^ Sub)) < 0L)
{
SetFpsrQCFlag(State);
if (op1 < 0L)
{
return (true, long.MinValue);
return long.MinValue;
}
else
{
return (true, long.MaxValue);
return long.MaxValue;
}
}
else
{
return (false, Sub);
return Sub;
}
}
private static (bool, ulong) BinaryUnsignedSatQSub(ulong op1, ulong op2)
public static ulong BinaryUnsignedSatQSub(ulong op1, ulong op2, AThreadState State)
{
ulong Sub = op1 - op2;
if (op1 < op2)
{
return (true, ulong.MinValue);
SetFpsrQCFlag(State);
return ulong.MinValue;
}
else
{
return (false, Sub);
return Sub;
}
}
public static bool BinarySignedSatQAcc_Sat(ulong op1, long op2) => BinarySignedSatQAcc(op1, op2).Item1;
public static long BinarySignedSatQAcc_Res(ulong op1, long op2) => BinarySignedSatQAcc(op1, op2).Item2;
public static bool BinaryUnsignedSatQAcc_Sat(long op1, ulong op2) => BinaryUnsignedSatQAcc(op1, op2).Item1;
public static ulong BinaryUnsignedSatQAcc_Res(long op1, ulong op2) => BinaryUnsignedSatQAcc(op1, op2).Item2;
private static (bool, long) BinarySignedSatQAcc(ulong op1, long op2)
public static long BinarySignedSatQAcc(ulong op1, long op2, AThreadState State)
{
if (op1 <= (ulong)long.MaxValue)
{
@ -103,16 +97,20 @@ namespace ChocolArm64.Instruction
if ((~op2 & Add) < 0L)
{
return (true, long.MaxValue);
SetFpsrQCFlag(State);
return long.MaxValue;
}
else
{
return (false, Add);
return Add;
}
}
else if (op2 >= 0L)
{
return (true, long.MaxValue);
SetFpsrQCFlag(State);
return long.MaxValue;
}
else
{
@ -120,16 +118,18 @@ namespace ChocolArm64.Instruction
if (Add > (ulong)long.MaxValue)
{
return (true, long.MaxValue);
SetFpsrQCFlag(State);
return long.MaxValue;
}
else
{
return (false, (long)Add);
return (long)Add;
}
}
}
private static (bool, ulong) BinaryUnsignedSatQAcc(long op1, ulong op2)
public static ulong BinaryUnsignedSatQAcc(long op1, ulong op2, AThreadState State)
{
if (op1 >= 0L)
{
@ -137,16 +137,18 @@ namespace ChocolArm64.Instruction
if ((Add < (ulong)op1) && (Add < op2))
{
return (true, ulong.MaxValue);
SetFpsrQCFlag(State);
return ulong.MaxValue;
}
else
{
return (false, Add);
return Add;
}
}
else if (op2 > (ulong)long.MaxValue)
{
return (false, (ulong)op1 + op2);
return (ulong)op1 + op2;
}
else
{
@ -154,15 +156,24 @@ namespace ChocolArm64.Instruction
if (Add < (long)ulong.MinValue)
{
return (true, ulong.MinValue);
SetFpsrQCFlag(State);
return ulong.MinValue;
}
else
{
return (false, (ulong)Add);
return (ulong)Add;
}
}
}
private static void SetFpsrQCFlag(AThreadState State)
{
const int QCFlagBit = 27;
State.Fpsr |= 1 << QCFlagBit;
}
public static ulong CountLeadingSigns(ulong Value, int Size)
{
Value ^= Value >> 1;