mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-12-24 17:36:02 +00:00
61 lines
1.9 KiB
C#
61 lines
1.9 KiB
C#
|
using ARMeilleure.Decoders;
|
||
|
using ARMeilleure.IntermediateRepresentation;
|
||
|
using ARMeilleure.State;
|
||
|
using ARMeilleure.Translation;
|
||
|
|
||
|
using static ARMeilleure.Instructions.InstEmitAluHelper;
|
||
|
using static ARMeilleure.Instructions.InstEmitFlowHelper;
|
||
|
using static ARMeilleure.Instructions.InstEmitHelper;
|
||
|
using static ARMeilleure.IntermediateRepresentation.OperandHelper;
|
||
|
|
||
|
namespace ARMeilleure.Instructions
|
||
|
{
|
||
|
static partial class InstEmit
|
||
|
{
|
||
|
public static void Ccmn(ArmEmitterContext context) => EmitCcmp(context, isNegated: true);
|
||
|
public static void Ccmp(ArmEmitterContext context) => EmitCcmp(context, isNegated: false);
|
||
|
|
||
|
private static void EmitCcmp(ArmEmitterContext context, bool isNegated)
|
||
|
{
|
||
|
OpCodeCcmp op = (OpCodeCcmp)context.CurrOp;
|
||
|
|
||
|
Operand lblTrue = Label();
|
||
|
Operand lblEnd = Label();
|
||
|
|
||
|
EmitCondBranch(context, lblTrue, op.Cond);
|
||
|
|
||
|
SetFlag(context, PState.VFlag, Const((op.Nzcv >> 0) & 1));
|
||
|
SetFlag(context, PState.CFlag, Const((op.Nzcv >> 1) & 1));
|
||
|
SetFlag(context, PState.ZFlag, Const((op.Nzcv >> 2) & 1));
|
||
|
SetFlag(context, PState.NFlag, Const((op.Nzcv >> 3) & 1));
|
||
|
|
||
|
context.Branch(lblEnd);
|
||
|
|
||
|
context.MarkLabel(lblTrue);
|
||
|
|
||
|
Operand n = GetAluN(context);
|
||
|
Operand m = GetAluM(context);
|
||
|
|
||
|
if (isNegated)
|
||
|
{
|
||
|
Operand d = context.Add(n, m);
|
||
|
|
||
|
EmitNZFlagsCheck(context, d);
|
||
|
|
||
|
EmitAddsCCheck(context, n, d);
|
||
|
EmitAddsVCheck(context, n, m, d);
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
Operand d = context.Subtract(n, m);
|
||
|
|
||
|
EmitNZFlagsCheck(context, d);
|
||
|
|
||
|
EmitSubsCCheck(context, n, m);
|
||
|
EmitSubsVCheck(context, n, m, d);
|
||
|
}
|
||
|
|
||
|
context.MarkLabel(lblEnd);
|
||
|
}
|
||
|
}
|
||
|
}
|