80 lines
2.4 KiB
C#
80 lines
2.4 KiB
C#
using ChocolArm64.Decoders;
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using ChocolArm64.Translation;
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using System.Reflection.Emit;
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namespace ChocolArm64.Instructions
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{
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static partial class InstEmit
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{
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public static void Madd(ILEmitterCtx context) => EmitMul(context, OpCodes.Add);
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public static void Msub(ILEmitterCtx context) => EmitMul(context, OpCodes.Sub);
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private static void EmitMul(ILEmitterCtx context, OpCode ilOp)
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{
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OpCodeMul64 op = (OpCodeMul64)context.CurrOp;
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context.EmitLdintzr(op.Ra);
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context.EmitLdintzr(op.Rn);
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context.EmitLdintzr(op.Rm);
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context.Emit(OpCodes.Mul);
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context.Emit(ilOp);
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context.EmitStintzr(op.Rd);
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}
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public static void Smaddl(ILEmitterCtx context) => EmitMull(context, OpCodes.Add, true);
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public static void Smsubl(ILEmitterCtx context) => EmitMull(context, OpCodes.Sub, true);
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public static void Umaddl(ILEmitterCtx context) => EmitMull(context, OpCodes.Add, false);
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public static void Umsubl(ILEmitterCtx context) => EmitMull(context, OpCodes.Sub, false);
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private static void EmitMull(ILEmitterCtx context, OpCode addSubOp, bool signed)
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{
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OpCodeMul64 op = (OpCodeMul64)context.CurrOp;
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OpCode castOp = signed
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? OpCodes.Conv_I8
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: OpCodes.Conv_U8;
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context.EmitLdintzr(op.Ra);
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context.EmitLdintzr(op.Rn);
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context.Emit(OpCodes.Conv_I4);
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context.Emit(castOp);
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context.EmitLdintzr(op.Rm);
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context.Emit(OpCodes.Conv_I4);
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context.Emit(castOp);
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context.Emit(OpCodes.Mul);
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context.Emit(addSubOp);
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context.EmitStintzr(op.Rd);
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}
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public static void Smulh(ILEmitterCtx context)
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{
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OpCodeMul64 op = (OpCodeMul64)context.CurrOp;
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context.EmitLdintzr(op.Rn);
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context.EmitLdintzr(op.Rm);
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SoftFallback.EmitCall(context, nameof(SoftFallback.SMulHi128));
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context.EmitStintzr(op.Rd);
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}
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public static void Umulh(ILEmitterCtx context)
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{
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OpCodeMul64 op = (OpCodeMul64)context.CurrOp;
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context.EmitLdintzr(op.Rn);
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context.EmitLdintzr(op.Rm);
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SoftFallback.EmitCall(context, nameof(SoftFallback.UMulHi128));
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context.EmitStintzr(op.Rd);
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}
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}
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} |