From eca2d19d8d5c1b1ee499cb05aa102153e43db3a1 Mon Sep 17 00:00:00 2001 From: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com> Date: Sat, 24 Mar 2018 02:06:05 +0100 Subject: [PATCH] Add Cls Instruction. (#67) * Update AInstEmitAlu.cs * Update ASoftFallback.cs * Update AOpCodeTable.cs --- AOpCodeTable.cs | 7 ++++--- Instruction/AInstEmitAlu.cs | 20 +++++++++++++++++++- Instruction/ASoftFallback.cs | 10 +++++++++- 3 files changed, 32 insertions(+), 5 deletions(-) diff --git a/AOpCodeTable.cs b/AOpCodeTable.cs index ea16ec0..395929d 100644 --- a/AOpCodeTable.cs +++ b/AOpCodeTable.cs @@ -8,7 +8,7 @@ namespace ChocolArm64 { static AOpCodeTable() { - #region "OpCode Table" +#region "OpCode Table" //Integer Set("x0011010000xxxxx000000xxxxxxxxxx", AInstEmit.Adc, typeof(AOpCodeAluRs)); Set("x0111010000xxxxx000000xxxxxxxxxx", AInstEmit.Adcs, typeof(AOpCodeAluRs)); @@ -41,6 +41,7 @@ namespace ChocolArm64 Set("x1111010010xxxxxxxxx10xxxxxxxxxx", AInstEmit.Ccmp, typeof(AOpCodeCcmpImm)); Set("x1111010010xxxxxxxxx00xxxxxxxxxx", AInstEmit.Ccmp, typeof(AOpCodeCcmpReg)); Set("11010101000000110011xxxx01011111", AInstEmit.Clrex, typeof(AOpCodeSystem)); + Set("x101101011000000000101xxxxxxxxxx", AInstEmit.Cls, typeof(AOpCodeAlu)); Set("x101101011000000000100xxxxxxxxxx", AInstEmit.Clz, typeof(AOpCodeAlu)); Set("x0011010110xxxxx010000xxxxxxxxxx", AInstEmit.Crc32b, typeof(AOpCodeAluRs)); Set("x0011010110xxxxx010001xxxxxxxxxx", AInstEmit.Crc32h, typeof(AOpCodeAluRs)); @@ -68,7 +69,7 @@ namespace ChocolArm64 Set("xx111000010xxxxxxxxxxxxxxxxxxxxx", AInstEmit.Ldr, typeof(AOpCodeMemImm)); Set("xx11100101xxxxxxxxxxxxxxxxxxxxxx", AInstEmit.Ldr, typeof(AOpCodeMemImm)); Set("xx111000011xxxxxxxxx10xxxxxxxxxx", AInstEmit.Ldr, typeof(AOpCodeMemReg)); - Set("xx011000xxxxxxxxxxxxxxxxxxxxxxxx", AInstEmit.LdrLit, typeof(AOpCodeMemLit)); + Set("xx011000xxxxxxxxxxxxxxxxxxxxxxxx", AInstEmit.LdrLit, typeof(AOpCodeMemLit)); Set("0x1110001x0xxxxxxxxxxxxxxxxxxxxx", AInstEmit.Ldrs, typeof(AOpCodeMemImm)); Set("0x1110011xxxxxxxxxxxxxxxxxxxxxxx", AInstEmit.Ldrs, typeof(AOpCodeMemImm)); Set("10111000100xxxxxxxxxxxxxxxxxxxxx", AInstEmit.Ldrs, typeof(AOpCodeMemImm)); @@ -442,4 +443,4 @@ namespace ChocolArm64 return AInst.Undefined; } } -} \ No newline at end of file +} diff --git a/Instruction/AInstEmitAlu.cs b/Instruction/AInstEmitAlu.cs index 5702036..bacbfc9 100644 --- a/Instruction/AInstEmitAlu.cs +++ b/Instruction/AInstEmitAlu.cs @@ -100,6 +100,24 @@ namespace ChocolArm64.Instruction EmitDataStore(Context, SetFlags); } + public static void Cls(AILEmitterCtx Context) + { + AOpCodeAlu Op = (AOpCodeAlu)Context.CurrOp; + + Context.EmitLdintzr(Op.Rn); + + if (Op.RegisterSize == ARegisterSize.Int32) + { + ASoftFallback.EmitCall(Context, nameof(ASoftFallback.CountLeadingSigns32)); + } + else + { + ASoftFallback.EmitCall(Context, nameof(ASoftFallback.CountLeadingSigns64)); + } + + Context.EmitStintzr(Op.Rd); + } + public static void Clz(AILEmitterCtx Context) { AOpCodeAlu Op = (AOpCodeAlu)Context.CurrOp; @@ -383,4 +401,4 @@ namespace ChocolArm64.Instruction Context.EmitStflg((int)APState.CBit); } } -} \ No newline at end of file +} diff --git a/Instruction/ASoftFallback.cs b/Instruction/ASoftFallback.cs index 705ca4a..c059441 100644 --- a/Instruction/ASoftFallback.cs +++ b/Instruction/ASoftFallback.cs @@ -20,6 +20,14 @@ namespace ChocolArm64.Instruction Context.EmitCall(typeof(ASoftFallback), MthdName); } + public static uint CountLeadingSigns32(uint Value) => (uint)CountLeadingSigns(Value, 32); + public static ulong CountLeadingSigns64(ulong Value) => (ulong)CountLeadingSigns(Value, 64); + + private static ulong CountLeadingSigns(ulong Value, int Size) + { + return CountLeadingZeros((Value >> 1) ^ Value, Size - 1); + } + public static uint CountLeadingZeros32(uint Value) => (uint)CountLeadingZeros(Value, 32); public static ulong CountLeadingZeros64(ulong Value) => (ulong)CountLeadingZeros(Value, 64); @@ -398,4 +406,4 @@ namespace ChocolArm64.Instruction throw new ArgumentOutOfRangeException(nameof(Size)); } } -} \ No newline at end of file +}