diff options
Diffstat (limited to 'src/ARMeilleure/Decoders/OpCodeTable.cs')
| -rw-r--r-- | src/ARMeilleure/Decoders/OpCodeTable.cs | 67 |
1 files changed, 34 insertions, 33 deletions
diff --git a/src/ARMeilleure/Decoders/OpCodeTable.cs b/src/ARMeilleure/Decoders/OpCodeTable.cs index 4f359958..d3fc4ca0 100644 --- a/src/ARMeilleure/Decoders/OpCodeTable.cs +++ b/src/ARMeilleure/Decoders/OpCodeTable.cs @@ -13,7 +13,7 @@ namespace ARMeilleure.Decoders private readonly struct InstInfo { - public int Mask { get; } + public int Mask { get; } public int Value { get; } public InstDescriptor Inst { get; } @@ -22,24 +22,25 @@ namespace ARMeilleure.Decoders public InstInfo(int mask, int value, InstDescriptor inst, MakeOp makeOp) { - Mask = mask; - Value = value; - Inst = inst; + Mask = mask; + Value = value; + Inst = inst; MakeOp = makeOp; } } - private static List<InstInfo> AllInstA32 = new(); - private static List<InstInfo> AllInstT32 = new(); - private static List<InstInfo> AllInstA64 = new(); + private static readonly List<InstInfo> _allInstA32 = new(); + private static readonly List<InstInfo> _allInstT32 = new(); + private static readonly List<InstInfo> _allInstA64 = new(); - private static InstInfo[][] InstA32FastLookup = new InstInfo[FastLookupSize][]; - private static InstInfo[][] InstT32FastLookup = new InstInfo[FastLookupSize][]; - private static InstInfo[][] InstA64FastLookup = new InstInfo[FastLookupSize][]; + private static readonly InstInfo[][] _instA32FastLookup = new InstInfo[FastLookupSize][]; + private static readonly InstInfo[][] _instT32FastLookup = new InstInfo[FastLookupSize][]; + private static readonly InstInfo[][] _instA64FastLookup = new InstInfo[FastLookupSize][]; static OpCodeTable() { -#region "OpCode Table (AArch64)" +#pragma warning disable IDE0055 // Disable formatting + #region "OpCode Table (AArch64)" // Base SetA64("x0011010000xxxxx000000xxxxxxxxxx", InstName.Adc, InstEmit.Adc, OpCodeAluRs.Create); SetA64("x0111010000xxxxx000000xxxxxxxxxx", InstName.Adcs, InstEmit.Adcs, OpCodeAluRs.Create); @@ -638,9 +639,9 @@ namespace ARMeilleure.Decoders SetA64("0x001110<<100001001010xxxxxxxxxx", InstName.Xtn_V, InstEmit.Xtn_V, OpCodeSimd.Create); SetA64("0>001110<<0xxxxx001110xxxxxxxxxx", InstName.Zip1_V, InstEmit.Zip1_V, OpCodeSimdReg.Create); SetA64("0>001110<<0xxxxx011110xxxxxxxxxx", InstName.Zip2_V, InstEmit.Zip2_V, OpCodeSimdReg.Create); -#endregion + #endregion -#region "OpCode Table (AArch32, A32)" + #region "OpCode Table (AArch32, A32)" // Base SetA32("<<<<0010101xxxxxxxxxxxxxxxxxxxxx", InstName.Adc, InstEmit32.Adc, OpCode32AluImm.Create); SetA32("<<<<0000101xxxxxxxxxxxxxxxx0xxxx", InstName.Adc, InstEmit32.Adc, OpCode32AluRsImm.Create); @@ -1050,9 +1051,9 @@ namespace ARMeilleure.Decoders SetAsimd("111100100x<<xxxxxxxx1000xxx1xxxx", InstName.Vtst, InstEmit32.Vtst, OpCode32SimdReg.Create, OpCode32SimdReg.CreateT32); SetAsimd("111100111x11<<10xxxx00010xx0xxxx", InstName.Vuzp, InstEmit32.Vuzp, OpCode32SimdCmpZ.Create, OpCode32SimdCmpZ.CreateT32); SetAsimd("111100111x11<<10xxxx00011xx0xxxx", InstName.Vzip, InstEmit32.Vzip, OpCode32SimdCmpZ.Create, OpCode32SimdCmpZ.CreateT32); -#endregion + #endregion -#region "OpCode Table (AArch32, T16)" + #region "OpCode Table (AArch32, T16)" SetT16("000<<xxxxxxxxxxx", InstName.Mov, InstEmit32.Mov, OpCodeT16ShiftImm.Create); SetT16("0001100xxxxxxxxx", InstName.Add, InstEmit32.Add, OpCodeT16AddSubReg.Create); SetT16("0001101xxxxxxxxx", InstName.Sub, InstEmit32.Sub, OpCodeT16AddSubReg.Create); @@ -1131,7 +1132,7 @@ namespace ARMeilleure.Decoders SetT16("11100xxxxxxxxxxx", InstName.B, InstEmit32.B, OpCodeT16BImm11.Create); #endregion -#region "OpCode Table (AArch32, T32)" + #region "OpCode Table (AArch32, T32)" // Base SetT32("11101011010xxxxx0xxxxxxxxxxxxxxx", InstName.Adc, InstEmit32.Adc, OpCodeT32AluRsImm.Create); SetT32("11110x01010xxxxx0xxxxxxxxxxxxxxx", InstName.Adc, InstEmit32.Adc, OpCodeT32AluImm.Create); @@ -1299,12 +1300,13 @@ namespace ARMeilleure.Decoders SetT32("11110011101011111000000000000001", InstName.Yield, InstEmit32.Nop, OpCodeT32.Create); #endregion - FillFastLookupTable(InstA32FastLookup, AllInstA32, ToFastLookupIndexA); - FillFastLookupTable(InstT32FastLookup, AllInstT32, ToFastLookupIndexT); - FillFastLookupTable(InstA64FastLookup, AllInstA64, ToFastLookupIndexA); + FillFastLookupTable(_instA32FastLookup, _allInstA32, ToFastLookupIndexA); + FillFastLookupTable(_instT32FastLookup, _allInstT32, ToFastLookupIndexT); + FillFastLookupTable(_instA64FastLookup, _allInstA64, ToFastLookupIndexA); +#pragma warning restore IDE0055 } - private static void FillFastLookupTable(InstInfo[][] table, List<InstInfo> allInsts, Func<int, int> ToFastLookupIndex) + private static void FillFastLookupTable(InstInfo[][] table, List<InstInfo> allInsts, Func<int, int> toFastLookupIndex) { List<InstInfo>[] temp = new List<InstInfo>[FastLookupSize]; @@ -1315,8 +1317,8 @@ namespace ARMeilleure.Decoders foreach (InstInfo inst in allInsts) { - int mask = ToFastLookupIndex(inst.Mask); - int value = ToFastLookupIndex(inst.Value); + int mask = toFastLookupIndex(inst.Mask); + int value = toFastLookupIndex(inst.Value); for (int index = 0; index < temp.Length; index++) { @@ -1335,22 +1337,21 @@ namespace ARMeilleure.Decoders private static void SetA32(string encoding, InstName name, InstEmitter emitter, MakeOp makeOp) { - Set(encoding, AllInstA32, new InstDescriptor(name, emitter), makeOp); + Set(encoding, _allInstA32, new InstDescriptor(name, emitter), makeOp); } private static void SetT16(string encoding, InstName name, InstEmitter emitter, MakeOp makeOp) { encoding = "xxxxxxxxxxxxxxxx" + encoding; - Set(encoding, AllInstT32, new InstDescriptor(name, emitter), makeOp); + Set(encoding, _allInstT32, new InstDescriptor(name, emitter), makeOp); } private static void SetT32(string encoding, InstName name, InstEmitter emitter, MakeOp makeOp) { string reversedEncoding = $"{encoding.AsSpan(16)}{encoding.AsSpan(0, 16)}"; - MakeOp reversedMakeOp = - (inst, address, opCode) + OpCode ReversedMakeOp(InstDescriptor inst, ulong address, int opCode) => makeOp(inst, address, (int)BitOperations.RotateRight((uint)opCode, 16)); - Set(reversedEncoding, AllInstT32, new InstDescriptor(name, emitter), reversedMakeOp); + Set(reversedEncoding, _allInstT32, new InstDescriptor(name, emitter), ReversedMakeOp); } private static void SetVfp(string encoding, InstName name, InstEmitter emitter, MakeOp makeOpA32, MakeOp makeOpT32) @@ -1395,12 +1396,12 @@ namespace ARMeilleure.Decoders private static void SetA64(string encoding, InstName name, InstEmitter emitter, MakeOp makeOp) { - Set(encoding, AllInstA64, new InstDescriptor(name, emitter), makeOp); + Set(encoding, _allInstA64, new InstDescriptor(name, emitter), makeOp); } private static void Set(string encoding, List<InstInfo> list, InstDescriptor inst, MakeOp makeOp) { - int bit = encoding.Length - 1; + int bit = encoding.Length - 1; int value = 0; int xMask = 0; int xBits = 0; @@ -1439,7 +1440,7 @@ namespace ARMeilleure.Decoders } else if (chr != '0') { - throw new ArgumentException(nameof(encoding)); + throw new ArgumentException($"Invalid encoding: {encoding}", nameof(encoding)); } } @@ -1470,17 +1471,17 @@ namespace ARMeilleure.Decoders public static (InstDescriptor inst, MakeOp makeOp) GetInstA32(int opCode) { - return GetInstFromList(InstA32FastLookup[ToFastLookupIndexA(opCode)], opCode); + return GetInstFromList(_instA32FastLookup[ToFastLookupIndexA(opCode)], opCode); } public static (InstDescriptor inst, MakeOp makeOp) GetInstT32(int opCode) { - return GetInstFromList(InstT32FastLookup[ToFastLookupIndexT(opCode)], opCode); + return GetInstFromList(_instT32FastLookup[ToFastLookupIndexT(opCode)], opCode); } public static (InstDescriptor inst, MakeOp makeOp) GetInstA64(int opCode) { - return GetInstFromList(InstA64FastLookup[ToFastLookupIndexA(opCode)], opCode); + return GetInstFromList(_instA64FastLookup[ToFastLookupIndexA(opCode)], opCode); } private static (InstDescriptor inst, MakeOp makeOp) GetInstFromList(InstInfo[] insts, int opCode) |