diff options
Diffstat (limited to 'ARMeilleure/Instructions/InstEmitSimdCmp32.cs')
| -rw-r--r-- | ARMeilleure/Instructions/InstEmitSimdCmp32.cs | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/ARMeilleure/Instructions/InstEmitSimdCmp32.cs b/ARMeilleure/Instructions/InstEmitSimdCmp32.cs new file mode 100644 index 00000000..3b2483ce --- /dev/null +++ b/ARMeilleure/Instructions/InstEmitSimdCmp32.cs @@ -0,0 +1,273 @@ +using ARMeilleure.Decoders; +using ARMeilleure.IntermediateRepresentation; +using ARMeilleure.State; +using ARMeilleure.Translation; +using System; + +using static ARMeilleure.Instructions.InstEmitHelper; +using static ARMeilleure.Instructions.InstEmitSimdHelper32; +using static ARMeilleure.IntermediateRepresentation.OperandHelper; + +namespace ARMeilleure.Instructions +{ + using Func2I = Func<Operand, Operand, Operand>; + + static partial class InstEmit32 + { + public static void Vceq_V(ArmEmitterContext context) + { + EmitCmpOpF32(context, SoftFloat32.FPCompareEQFpscr, SoftFloat64.FPCompareEQFpscr, false); + } + + public static void Vceq_I(ArmEmitterContext context) + { + EmitCmpOpI32(context, context.ICompareEqual, context.ICompareEqual, false, false); + } + + public static void Vceq_Z(ArmEmitterContext context) + { + OpCode32Simd op = (OpCode32Simd)context.CurrOp; + + if (op.F) + { + EmitCmpOpF32(context, SoftFloat32.FPCompareEQFpscr, SoftFloat64.FPCompareEQFpscr, true); + } + else + { + EmitCmpOpI32(context, context.ICompareEqual, context.ICompareEqual, true, false); + } + } + + public static void Vcge_V(ArmEmitterContext context) + { + EmitCmpOpF32(context, SoftFloat32.FPCompareGEFpscr, SoftFloat64.FPCompareGEFpscr, false); + } + + public static void Vcge_I(ArmEmitterContext context) + { + OpCode32SimdReg op = (OpCode32SimdReg)context.CurrOp; + + EmitCmpOpI32(context, context.ICompareGreaterOrEqual, context.ICompareGreaterOrEqualUI, false, !op.U); + } + + public static void Vcge_Z(ArmEmitterContext context) + { + OpCode32Simd op = (OpCode32Simd)context.CurrOp; + + if (op.F) + { + EmitCmpOpF32(context, SoftFloat32.FPCompareGEFpscr, SoftFloat64.FPCompareGEFpscr, true); + } + else + { + EmitCmpOpI32(context, context.ICompareGreaterOrEqual, context.ICompareGreaterOrEqualUI, true, true); + } + } + + public static void Vcgt_V(ArmEmitterContext context) + { + EmitCmpOpF32(context, SoftFloat32.FPCompareGTFpscr, SoftFloat64.FPCompareGTFpscr, false); + } + + public static void Vcgt_I(ArmEmitterContext context) + { + OpCode32SimdReg op = (OpCode32SimdReg)context.CurrOp; + + EmitCmpOpI32(context, context.ICompareGreater, context.ICompareGreaterUI, false, !op.U); + } + + public static void Vcgt_Z(ArmEmitterContext context) + { + OpCode32Simd op = (OpCode32Simd)context.CurrOp; + + if (op.F) + { + EmitCmpOpF32(context, SoftFloat32.FPCompareGTFpscr, SoftFloat64.FPCompareGTFpscr, true); + } + else + { + EmitCmpOpI32(context, context.ICompareGreater, context.ICompareGreaterUI, true, true); + } + } + + public static void Vcle_Z(ArmEmitterContext context) + { + OpCode32Simd op = (OpCode32Simd)context.CurrOp; + + if (op.F) + { + EmitCmpOpF32(context, SoftFloat32.FPCompareLEFpscr, SoftFloat64.FPCompareLEFpscr, true); + } + else + { + EmitCmpOpI32(context, context.ICompareLessOrEqual, context.ICompareLessOrEqualUI, true, true); + } + } + + public static void Vclt_Z(ArmEmitterContext context) + { + OpCode32Simd op = (OpCode32Simd)context.CurrOp; + + if (op.F) + { + EmitCmpOpF32(context, SoftFloat32.FPCompareLTFpscr, SoftFloat64.FPCompareLTFpscr, true); + } + else + { + EmitCmpOpI32(context, context.ICompareLess, context.ICompareLessUI, true, true); + } + } + + private static void EmitCmpOpF32( + ArmEmitterContext context, + _F32_F32_F32_Bool f32, + _F64_F64_F64_Bool f64, + bool zero) + { + Operand one = Const(1); + if (zero) + { + EmitVectorUnaryOpF32(context, (m) => + { + OperandType type = m.Type; + + if (type == OperandType.FP64) + { + return context.Call(f64, m, ConstF(0.0), one); + } + else + { + return context.Call(f32, m, ConstF(0.0f), one); + } + }); + } + else + { + EmitVectorBinaryOpF32(context, (n, m) => + { + OperandType type = n.Type; + + if (type == OperandType.FP64) + { + return context.Call(f64, n, m, one); + } + else + { + return context.Call(f32, n, m, one); + } + }); + } + } + + private static Operand ZerosOrOnes(ArmEmitterContext context, Operand fromBool, OperandType baseType) + { + var ones = (baseType == OperandType.I64) ? Const(-1L) : Const(-1); + + return context.ConditionalSelect(fromBool, ones, Const(baseType, 0L)); + } + + private static void EmitCmpOpI32( + ArmEmitterContext context, + Func2I signedOp, + Func2I unsignedOp, + bool zero, + bool signed) + { + if (zero) + { + if (signed) + { + EmitVectorUnaryOpSx32(context, (m) => + { + OperandType type = m.Type; + Operand zeroV = (type == OperandType.I64) ? Const(0L) : Const(0); + + return ZerosOrOnes(context, signedOp(m, zeroV), type); + }); + } + else + { + EmitVectorUnaryOpZx32(context, (m) => + { + OperandType type = m.Type; + Operand zeroV = (type == OperandType.I64) ? Const(0L) : Const(0); + + return ZerosOrOnes(context, unsignedOp(m, zeroV), type); + }); + } + } + else + { + if (signed) + { + EmitVectorBinaryOpSx32(context, (n, m) => ZerosOrOnes(context, signedOp(n, m), n.Type)); + } + else + { + EmitVectorBinaryOpZx32(context, (n, m) => ZerosOrOnes(context, unsignedOp(n, m), n.Type)); + } + } + } + + public static void Vcmp(ArmEmitterContext context) + { + EmitVcmpOrVcmpe(context, false); + } + + public static void Vcmpe(ArmEmitterContext context) + { + EmitVcmpOrVcmpe(context, true); + } + + private static void EmitVcmpOrVcmpe(ArmEmitterContext context, bool signalNaNs) + { + OpCode32SimdS op = (OpCode32SimdS)context.CurrOp; + + bool cmpWithZero = (op.Opc & 2) != 0; + { + int fSize = op.Size & 1; + OperandType type = fSize != 0 ? OperandType.FP64 : OperandType.FP32; + + Operand ne = ExtractScalar(context, type, op.Vd); + Operand me; + + if (cmpWithZero) + { + me = fSize == 0 ? ConstF(0f) : ConstF(0d); + } + else + { + me = ExtractScalar(context, type, op.Vm); + } + + Delegate dlg = fSize != 0 + ? (Delegate)new _S32_F64_F64_Bool(SoftFloat64.FPCompare) + : (Delegate)new _S32_F32_F32_Bool(SoftFloat32.FPCompare); + + Operand nzcv = context.Call(dlg, ne, me, Const(signalNaNs)); + + EmitSetFPSCRFlags(context, nzcv); + } + } + + private static void EmitSetFPSCRFlags(ArmEmitterContext context, Operand nzcv) + { + Operand Extract(Operand value, int bit) + { + if (bit != 0) + { + value = context.ShiftRightUI(value, Const(bit)); + } + + value = context.BitwiseAnd(value, Const(1)); + + return value; + } + + SetFpFlag(context, FPState.VFlag, Extract(nzcv, 0)); + SetFpFlag(context, FPState.CFlag, Extract(nzcv, 1)); + SetFpFlag(context, FPState.ZFlag, Extract(nzcv, 2)); + SetFpFlag(context, FPState.NFlag, Extract(nzcv, 3)); + } + } +} |