diff options
| author | LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com> | 2019-12-07 13:45:32 +0100 |
|---|---|---|
| committer | Ac_K <Acoustik666@gmail.com> | 2019-12-07 13:45:32 +0100 |
| commit | 8c85bdf2edf5ebd7965fbbd08106f2e8d877d73e (patch) | |
| tree | 1f112a5d4a6dc0b4c8882b8151623e006172bb6c /ARMeilleure/Decoders/OpCodeSimdImm.cs | |
| parent | d562ba37a0bc603e9719bb36dc9e7e9bf4406687 (diff) | |
Implemented fast paths for: (#841)
* cpu-misc_opt
* B = ~b
* ;
Diffstat (limited to 'ARMeilleure/Decoders/OpCodeSimdImm.cs')
| -rw-r--r-- | ARMeilleure/Decoders/OpCodeSimdImm.cs | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/ARMeilleure/Decoders/OpCodeSimdImm.cs b/ARMeilleure/Decoders/OpCodeSimdImm.cs index ecad906d..a88e360e 100644 --- a/ARMeilleure/Decoders/OpCodeSimdImm.cs +++ b/ARMeilleure/Decoders/OpCodeSimdImm.cs @@ -23,19 +23,19 @@ namespace ARMeilleure.Decoders if (modeHigh == 0b111) { - Size = modeLow != 0 ? op : 3; - switch (op | (modeLow << 1)) { case 0: // 64-bits Immediate. // Transform abcd efgh into abcd efgh abcd efgh ... + Size = 3; imm = (long)((ulong)imm * 0x0101010101010101); break; case 1: // 64-bits Immediate. // Transform abcd efgh into aaaa aaaa bbbb bbbb ... + Size = 3; imm = (imm & 0xf0) >> 4 | (imm & 0x0f) << 4; imm = (imm & 0xcc) >> 2 | (imm & 0x33) << 2; imm = (imm & 0xaa) >> 1 | (imm & 0x55) << 1; @@ -49,9 +49,16 @@ namespace ARMeilleure.Decoders break; case 2: + // 2 x 32-bits floating point Immediate. + Size = 0; + imm = (long)DecoderHelper.Imm8ToFP32Table[(int)imm]; + imm |= imm << 32; + break; + case 3: - // Floating point Immediate. - imm = DecoderHelper.DecodeImm8Float(imm, Size); + // 64-bits floating point Immediate. + Size = 1; + imm = (long)DecoderHelper.Imm8ToFP64Table[(int)imm]; break; } } @@ -72,7 +79,7 @@ namespace ARMeilleure.Decoders } else { - // 8 bits without shift. + // 8-bits without shift. Size = 0; } |