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Update ASoftFallback.cs

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LDj3SNuD 2018-07-02 02:06:35 +02:00 • committed by GitHub
commit 8224cdd4bd
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1 changed files with 20 additions and 4 deletions
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24
ChocolArm64/Instruction/ASoftFallback.cs
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@ -30,6 +30,14 @@ namespace ChocolArm64.Instruction
return (ulong)Size; return (ulong)Size;
} }
public static int CountSetBits8(byte Value)
{
return ((Value >> 0) & 1) + ((Value >> 1) & 1) +
((Value >> 2) & 1) + ((Value >> 3) & 1) +
((Value >> 4) & 1) + ((Value >> 5) & 1) +
((Value >> 6) & 1) + (Value >> 7);
}
private const uint Crc32RevPoly = 0xedb88320; private const uint Crc32RevPoly = 0xedb88320;
private const uint Crc32cRevPoly = 0x82f63b78; private const uint Crc32cRevPoly = 0x82f63b78;
@ -89,6 +97,14 @@ namespace ChocolArm64.Instruction
return Crc; return Crc;
} }
public static uint ReverseBits8(uint Value)
{
Value = ((Value & 0xaa) >> 1) | ((Value & 0x55) << 1);
Value = ((Value & 0xcc) >> 2) | ((Value & 0x33) << 2);
return (Value >> 4) | ((Value & 0x0f) << 4);
}
public static uint ReverseBits32(uint Value) public static uint ReverseBits32(uint Value)
{ {
Value = ((Value & 0xaaaaaaaa) >> 1) | ((Value & 0x55555555) << 1); Value = ((Value & 0xaaaaaaaa) >> 1) | ((Value & 0x55555555) << 1);
@ -101,10 +117,10 @@ namespace ChocolArm64.Instruction
public static ulong ReverseBits64(ulong Value) public static ulong ReverseBits64(ulong Value)
{ {
Value = ((Value & 0xaaaaaaaaaaaaaaaa) >> 1) | ((Value & 0x5555555555555555) << 1); Value = ((Value & 0xaaaaaaaaaaaaaaaa) >> 1 ) | ((Value & 0x5555555555555555) << 1 );
Value = ((Value & 0xcccccccccccccccc) >> 2) | ((Value & 0x3333333333333333) << 2); Value = ((Value & 0xcccccccccccccccc) >> 2 ) | ((Value & 0x3333333333333333) << 2 );
Value = ((Value & 0xf0f0f0f0f0f0f0f0) >> 4) | ((Value & 0x0f0f0f0f0f0f0f0f) << 4); Value = ((Value & 0xf0f0f0f0f0f0f0f0) >> 4 ) | ((Value & 0x0f0f0f0f0f0f0f0f) << 4 );
Value = ((Value & 0xff00ff00ff00ff00) >> 8) | ((Value & 0x00ff00ff00ff00ff) << 8); Value = ((Value & 0xff00ff00ff00ff00) >> 8 ) | ((Value & 0x00ff00ff00ff00ff) << 8 );
Value = ((Value & 0xffff0000ffff0000) >> 16) | ((Value & 0x0000ffff0000ffff) << 16); Value = ((Value & 0xffff0000ffff0000) >> 16) | ((Value & 0x0000ffff0000ffff) << 16);
return (Value >> 32) | (Value << 32); return (Value >> 32) | (Value << 32);