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using ChocolArm64.Decoder;
using ChocolArm64.Translation;
using System.Reflection.Emit;
namespace ChocolArm64.Instruction
{
static partial class AInstEmit
{
public static void Madd(AILEmitterCtx Context) => EmitMul(Context, OpCodes.Add);
public static void Msub(AILEmitterCtx Context) => EmitMul(Context, OpCodes.Sub);
private static void EmitMul(AILEmitterCtx Context, OpCode ILOp)
{
AOpCodeMul Op = (AOpCodeMul)Context.CurrOp;
Context.EmitLdintzr(Op.Ra);
Context.EmitLdintzr(Op.Rn);
Context.EmitLdintzr(Op.Rm);
Context.Emit(OpCodes.Mul);
Context.Emit(ILOp);
Context.EmitStintzr(Op.Rd);
}
public static void Smaddl(AILEmitterCtx Context) => EmitMull(Context, OpCodes.Add, true);
public static void Smsubl(AILEmitterCtx Context) => EmitMull(Context, OpCodes.Sub, true);
public static void Umaddl(AILEmitterCtx Context) => EmitMull(Context, OpCodes.Add, false);
public static void Umsubl(AILEmitterCtx Context) => EmitMull(Context, OpCodes.Sub, false);
private static void EmitMull(AILEmitterCtx Context, OpCode AddSubOp, bool Signed)
{
AOpCodeMul Op = (AOpCodeMul)Context.CurrOp;
OpCode CastOp = Signed
? OpCodes.Conv_I8
: OpCodes.Conv_U8;
Context.EmitLdintzr(Op.Ra);
Context.EmitLdintzr(Op.Rn);
Context.Emit(OpCodes.Conv_I4);
Context.Emit(CastOp);
Context.EmitLdintzr(Op.Rm);
Context.Emit(OpCodes.Conv_I4);
Context.Emit(CastOp);
Context.Emit(OpCodes.Mul);
Context.Emit(AddSubOp);
Context.EmitStintzr(Op.Rd);
}
public static void Smulh(AILEmitterCtx Context)
{
AOpCodeMul Op = (AOpCodeMul)Context.CurrOp;
Context.EmitLdintzr(Op.Rn);
Context.EmitLdintzr(Op.Rm);
ASoftFallback.EmitCall(Context, nameof(ASoftFallback.SMulHi128));
Context.EmitStintzr(Op.Rd);
}
public static void Umulh(AILEmitterCtx Context)
{
AOpCodeMul Op = (AOpCodeMul)Context.CurrOp;
Context.EmitLdintzr(Op.Rn);
Context.EmitLdintzr(Op.Rm);
ASoftFallback.EmitCall(Context, nameof(ASoftFallback.UMulHi128));
Context.EmitStintzr(Op.Rd);
}
}
}
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