mirror of https://github.com/Ryujinx/Ryujinx.git
61 lines
1.9 KiB
C#
61 lines
1.9 KiB
C#
using ARMeilleure.Decoders;
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using ARMeilleure.IntermediateRepresentation;
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using ARMeilleure.State;
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using ARMeilleure.Translation;
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using static ARMeilleure.Instructions.InstEmitAluHelper;
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using static ARMeilleure.Instructions.InstEmitFlowHelper;
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using static ARMeilleure.Instructions.InstEmitHelper;
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using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
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namespace ARMeilleure.Instructions
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{
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static partial class InstEmit
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{
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public static void Ccmn(ArmEmitterContext context) => EmitCcmp(context, isNegated: true);
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public static void Ccmp(ArmEmitterContext context) => EmitCcmp(context, isNegated: false);
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private static void EmitCcmp(ArmEmitterContext context, bool isNegated)
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{
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OpCodeCcmp op = (OpCodeCcmp)context.CurrOp;
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Operand lblTrue = Label();
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Operand lblEnd = Label();
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EmitCondBranch(context, lblTrue, op.Cond);
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SetFlag(context, PState.VFlag, Const((op.Nzcv >> 0) & 1));
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SetFlag(context, PState.CFlag, Const((op.Nzcv >> 1) & 1));
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SetFlag(context, PState.ZFlag, Const((op.Nzcv >> 2) & 1));
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SetFlag(context, PState.NFlag, Const((op.Nzcv >> 3) & 1));
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context.Branch(lblEnd);
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context.MarkLabel(lblTrue);
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Operand n = GetAluN(context);
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Operand m = GetAluM(context);
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if (isNegated)
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{
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Operand d = context.Add(n, m);
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EmitNZFlagsCheck(context, d);
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EmitAddsCCheck(context, n, d);
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EmitAddsVCheck(context, n, m, d);
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}
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else
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{
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Operand d = context.Subtract(n, m);
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EmitNZFlagsCheck(context, d);
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EmitSubsCCheck(context, n, m);
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EmitSubsVCheck(context, n, m, d);
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}
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context.MarkLabel(lblEnd);
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}
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}
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} |