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authorLDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>2019-10-31 19:09:03 +0100
committerAc_K <Acoustik666@gmail.com>2019-10-31 19:09:03 +0100
commiteee639d6ba544fa5dd9352426d55e91bc54e157d (patch)
tree1df440ca57d8c1725e84f403fbeecddb8e508a3a /ChocolArm64/Instructions/InstEmitAluHelper.cs
parent35443bac5a16ced668d84e0a22c21ca9076b3924 (diff)
.NET Core 3.0 is here! (#784)
* .NET Core 3.0 is here! * Remove IMemoryManager.cs and its references. * Add T Math/F.FusedMultiplyAdd(T, T, T). Nits. * Nit. * Update appveyor.yml * Revert "Resolve Visual Studio build issues" This reverts commit 1772128ce0fc058e6280001aace3a77a7a96897b. * Update SvcTable.cs
Diffstat (limited to 'ChocolArm64/Instructions/InstEmitAluHelper.cs')
-rw-r--r--ChocolArm64/Instructions/InstEmitAluHelper.cs462
1 files changed, 0 insertions, 462 deletions
diff --git a/ChocolArm64/Instructions/InstEmitAluHelper.cs b/ChocolArm64/Instructions/InstEmitAluHelper.cs
deleted file mode 100644
index 64822088..00000000
--- a/ChocolArm64/Instructions/InstEmitAluHelper.cs
+++ /dev/null
@@ -1,462 +0,0 @@
-using ChocolArm64.Decoders;
-using ChocolArm64.State;
-using ChocolArm64.Translation;
-using System;
-using System.Reflection.Emit;
-
-namespace ChocolArm64.Instructions
-{
- static class InstEmitAluHelper
- {
- public static void EmitAdcsCCheck(ILEmitterCtx context)
- {
- // C = (Rd == Rn && CIn) || Rd < Rn
- context.EmitSttmp();
- context.EmitLdtmp();
- context.EmitLdtmp();
-
- EmitAluLoadRn(context);
-
- context.Emit(OpCodes.Ceq);
-
- context.EmitLdflg((int)PState.CBit);
-
- context.Emit(OpCodes.And);
-
- context.EmitLdtmp();
-
- EmitAluLoadRn(context);
-
- context.Emit(OpCodes.Clt_Un);
- context.Emit(OpCodes.Or);
-
- context.EmitStflg((int)PState.CBit);
- }
-
- public static void EmitAddsCCheck(ILEmitterCtx context)
- {
- // C = Rd < Rn
- context.Emit(OpCodes.Dup);
-
- EmitAluLoadRn(context);
-
- context.Emit(OpCodes.Clt_Un);
-
- context.EmitStflg((int)PState.CBit);
- }
-
- public static void EmitAddsVCheck(ILEmitterCtx context)
- {
- // V = (Rd ^ Rn) & ~(Rn ^ Rm) < 0
- context.Emit(OpCodes.Dup);
-
- EmitAluLoadRn(context);
-
- context.Emit(OpCodes.Xor);
-
- EmitAluLoadOpers(context);
-
- context.Emit(OpCodes.Xor);
- context.Emit(OpCodes.Not);
- context.Emit(OpCodes.And);
-
- context.EmitLdc_I(0);
-
- context.Emit(OpCodes.Clt);
-
- context.EmitStflg((int)PState.VBit);
- }
-
- public static void EmitSbcsCCheck(ILEmitterCtx context)
- {
- // C = (Rn == Rm && CIn) || Rn > Rm
- EmitAluLoadOpers(context);
-
- context.Emit(OpCodes.Ceq);
-
- context.EmitLdflg((int)PState.CBit);
-
- context.Emit(OpCodes.And);
-
- EmitAluLoadOpers(context);
-
- context.Emit(OpCodes.Cgt_Un);
- context.Emit(OpCodes.Or);
-
- context.EmitStflg((int)PState.CBit);
- }
-
- public static void EmitSubsCCheck(ILEmitterCtx context)
- {
- // C = Rn == Rm || Rn > Rm = !(Rn < Rm)
- EmitAluLoadOpers(context);
-
- context.Emit(OpCodes.Clt_Un);
-
- context.EmitLdc_I4(1);
-
- context.Emit(OpCodes.Xor);
-
- context.EmitStflg((int)PState.CBit);
- }
-
- public static void EmitSubsVCheck(ILEmitterCtx context)
- {
- // V = (Rd ^ Rn) & (Rn ^ Rm) < 0
- context.Emit(OpCodes.Dup);
-
- EmitAluLoadRn(context);
-
- context.Emit(OpCodes.Xor);
-
- EmitAluLoadOpers(context);
-
- context.Emit(OpCodes.Xor);
- context.Emit(OpCodes.And);
-
- context.EmitLdc_I(0);
-
- context.Emit(OpCodes.Clt);
-
- context.EmitStflg((int)PState.VBit);
- }
-
- public static void EmitAluLoadRm(ILEmitterCtx context)
- {
- if (context.CurrOp is IOpCodeAluRs64 op)
- {
- context.EmitLdintzr(op.Rm);
- }
- else if (context.CurrOp is OpCode32AluRsImm op32)
- {
- InstEmit32Helper.EmitLoadFromRegister(context, op32.Rm);
- }
- else
- {
- throw new InvalidOperationException();
- }
- }
-
- public static void EmitAluLoadOpers(ILEmitterCtx context, bool setCarry = true)
- {
- EmitAluLoadRn(context);
- EmitAluLoadOper2(context, setCarry);
- }
-
- public static void EmitAluLoadRn(ILEmitterCtx context)
- {
- if (context.CurrOp is IOpCodeAlu64 op)
- {
- if (op.DataOp == DataOp.Logical || op is IOpCodeAluRs64)
- {
- context.EmitLdintzr(op.Rn);
- }
- else
- {
- context.EmitLdint(op.Rn);
- }
- }
- else if (context.CurrOp is IOpCode32Alu op32)
- {
- InstEmit32Helper.EmitLoadFromRegister(context, op32.Rn);
- }
- else
- {
- throw new InvalidOperationException();
- }
- }
-
- public static void EmitAluLoadOper2(ILEmitterCtx context, bool setCarry = true)
- {
- switch (context.CurrOp)
- {
- // ARM32.
- case OpCode32AluImm op:
- context.EmitLdc_I4(op.Imm);
-
- if (op.SetFlags && op.IsRotated)
- {
- context.EmitLdc_I4((int)((uint)op.Imm >> 31));
-
- context.EmitStflg((int)PState.CBit);
- }
- break;
-
- case OpCode32AluRsImm op:
- EmitLoadRmShiftedByImmediate(context, op, setCarry);
- break;
-
- case OpCodeT16AluImm8 op:
- context.EmitLdc_I4(op.Imm);
- break;
-
- // ARM64.
- case IOpCodeAluImm64 op:
- context.EmitLdc_I(op.Imm);
- break;
-
- case IOpCodeAluRs64 op:
- context.EmitLdintzr(op.Rm);
-
- switch (op.ShiftType)
- {
- case ShiftType.Lsl: context.EmitLsl(op.Shift); break;
- case ShiftType.Lsr: context.EmitLsr(op.Shift); break;
- case ShiftType.Asr: context.EmitAsr(op.Shift); break;
- case ShiftType.Ror: context.EmitRor(op.Shift); break;
- }
- break;
-
- case IOpCodeAluRx64 op:
- context.EmitLdintzr(op.Rm);
- context.EmitCast(op.IntType);
- context.EmitLsl(op.Shift);
- break;
-
- default: throw new InvalidOperationException();
- }
- }
-
- public static void EmitSetNzcv(ILEmitterCtx context)
- {
- context.Emit(OpCodes.Dup);
- context.Emit(OpCodes.Ldc_I4_1);
- context.Emit(OpCodes.And);
- context.EmitStflg((int)PState.VBit);
-
- context.Emit(OpCodes.Ldc_I4_1);
- context.Emit(OpCodes.Shr);
- context.Emit(OpCodes.Dup);
- context.Emit(OpCodes.Ldc_I4_1);
- context.Emit(OpCodes.And);
- context.EmitStflg((int)PState.CBit);
-
- context.Emit(OpCodes.Ldc_I4_1);
- context.Emit(OpCodes.Shr);
- context.Emit(OpCodes.Dup);
- context.Emit(OpCodes.Ldc_I4_1);
- context.Emit(OpCodes.And);
- context.EmitStflg((int)PState.ZBit);
-
- context.Emit(OpCodes.Ldc_I4_1);
- context.Emit(OpCodes.Shr);
- context.Emit(OpCodes.Ldc_I4_1);
- context.Emit(OpCodes.And);
- context.EmitStflg((int)PState.NBit);
- }
-
- // ARM32 helpers.
- private static void EmitLoadRmShiftedByImmediate(ILEmitterCtx context, OpCode32AluRsImm op, bool setCarry)
- {
- int shift = op.Imm;
-
- if (shift == 0)
- {
- switch (op.ShiftType)
- {
- case ShiftType.Lsr: shift = 32; break;
- case ShiftType.Asr: shift = 32; break;
- case ShiftType.Ror: shift = 1; break;
- }
- }
-
- context.EmitLdint(op.Rm);
-
- if (shift != 0)
- {
- setCarry &= op.SetFlags;
-
- switch (op.ShiftType)
- {
- case ShiftType.Lsl: EmitLslC(context, setCarry, shift); break;
- case ShiftType.Lsr: EmitLsrC(context, setCarry, shift); break;
- case ShiftType.Asr: EmitAsrC(context, setCarry, shift); break;
- case ShiftType.Ror:
- if (op.Imm != 0)
- {
- EmitRorC(context, setCarry, shift);
- }
- else
- {
- EmitRrxC(context, setCarry);
- }
- break;
- }
- }
- }
-
- private static void EmitLslC(ILEmitterCtx context, bool setCarry, int shift)
- {
- if ((uint)shift > 32)
- {
- EmitShiftByMoreThan32(context, setCarry);
- }
- else if (shift == 32)
- {
- if (setCarry)
- {
- context.EmitLdc_I4(1);
-
- context.Emit(OpCodes.And);
-
- context.EmitStflg((int)PState.CBit);
- }
- else
- {
- context.Emit(OpCodes.Pop);
- }
-
- context.EmitLdc_I4(0);
- }
- else
- {
- if (setCarry)
- {
- context.Emit(OpCodes.Dup);
-
- context.EmitLsr(32 - shift);
-
- context.EmitLdc_I4(1);
-
- context.Emit(OpCodes.And);
-
- context.EmitStflg((int)PState.CBit);
- }
-
- context.EmitLsl(shift);
- }
- }
-
- private static void EmitLsrC(ILEmitterCtx context, bool setCarry, int shift)
- {
- if ((uint)shift > 32)
- {
- EmitShiftByMoreThan32(context, setCarry);
- }
- else if (shift == 32)
- {
- if (setCarry)
- {
- context.EmitLsr(31);
-
- context.EmitStflg((int)PState.CBit);
- }
- else
- {
- context.Emit(OpCodes.Pop);
- }
-
- context.EmitLdc_I4(0);
- }
- else
- {
- context.Emit(OpCodes.Dup);
-
- context.EmitLsr(shift - 1);
-
- context.EmitLdc_I4(1);
-
- context.Emit(OpCodes.And);
-
- context.EmitStflg((int)PState.CBit);
-
- context.EmitLsr(shift);
- }
- }
-
- private static void EmitShiftByMoreThan32(ILEmitterCtx context, bool setCarry)
- {
- context.Emit(OpCodes.Pop);
-
- context.EmitLdc_I4(0);
-
- if (setCarry)
- {
- context.Emit(OpCodes.Dup);
-
- context.EmitStflg((int)PState.CBit);
- }
- }
-
- private static void EmitAsrC(ILEmitterCtx context, bool setCarry, int shift)
- {
- if ((uint)shift >= 32)
- {
- context.EmitAsr(31);
-
- if (setCarry)
- {
- context.Emit(OpCodes.Dup);
-
- context.EmitLdc_I4(1);
-
- context.Emit(OpCodes.And);
-
- context.EmitStflg((int)PState.CBit);
- }
- }
- else
- {
- if (setCarry)
- {
- context.Emit(OpCodes.Dup);
-
- context.EmitLsr(shift - 1);
-
- context.EmitLdc_I4(1);
-
- context.Emit(OpCodes.And);
-
- context.EmitStflg((int)PState.CBit);
- }
-
- context.EmitAsr(shift);
- }
- }
-
- private static void EmitRorC(ILEmitterCtx context, bool setCarry, int shift)
- {
- shift &= 0x1f;
-
- context.EmitRor(shift);
-
- if (setCarry)
- {
- context.Emit(OpCodes.Dup);
-
- context.EmitLsr(31);
-
- context.EmitStflg((int)PState.CBit);
- }
- }
-
- private static void EmitRrxC(ILEmitterCtx context, bool setCarry)
- {
- // Rotate right by 1 with carry.
- if (setCarry)
- {
- context.Emit(OpCodes.Dup);
-
- context.EmitLdc_I4(1);
-
- context.Emit(OpCodes.And);
-
- context.EmitSttmp();
- }
-
- context.EmitLsr(1);
-
- context.EmitLdflg((int)PState.CBit);
-
- context.EmitLsl(31);
-
- context.Emit(OpCodes.Or);
-
- if (setCarry)
- {
- context.EmitLdtmp();
- context.EmitStflg((int)PState.CBit);
- }
- }
- }
-}