private static void EmitCcmp(ILEmitterCtx context, CcmpOp cmpOp)
{
OpCodeCcmp64 op = (OpCodeCcmp64)context.CurrOp;
ILLabel lblTrue = new ILLabel();
ILLabel lblEnd = new ILLabel();
context.EmitCondBranch(lblTrue, op.Cond);
context.EmitLdc_I4((op.Nzcv >> 0) & 1);
context.EmitStflg((int)PState.VBit);
context.EmitLdc_I4((op.Nzcv >> 1) & 1);
context.EmitStflg((int)PState.CBit);
context.EmitLdc_I4((op.Nzcv >> 2) & 1);
context.EmitStflg((int)PState.ZBit);
context.EmitLdc_I4((op.Nzcv >> 3) & 1);
context.EmitStflg((int)PState.NBit);
context.Emit(OpCodes.Br_S, lblEnd);
context.MarkLabel(lblTrue);
EmitAluLoadOpers(context);
if (cmpOp == CcmpOp.Cmp)
{
context.Emit(OpCodes.Sub);
context.EmitZnFlagCheck();
EmitSubsCCheck(context);
EmitSubsVCheck(context);
}
else if (cmpOp == CcmpOp.Cmn)
{
context.Emit(OpCodes.Add);
context.EmitZnFlagCheck();
EmitAddsCCheck(context);
EmitAddsVCheck(context);
}
else
{
throw new ArgumentException(nameof(cmpOp));
}
context.Emit(OpCodes.Pop);
context.MarkLabel(lblEnd);
}
private static void EmitCcmp(AILEmitterCtx Context, CcmpOp CmpOp)
{
AOpCodeCcmp Op = (AOpCodeCcmp)Context.CurrOp;
AILLabel LblTrue = new AILLabel();
AILLabel LblEnd = new AILLabel();
Context.EmitCondBranch(LblTrue, Op.Cond);
Context.EmitLdc_I4((Op.NZCV >> 0) & 1);
Context.EmitStflg((int)APState.VBit);
Context.EmitLdc_I4((Op.NZCV >> 1) & 1);
Context.EmitStflg((int)APState.CBit);
Context.EmitLdc_I4((Op.NZCV >> 2) & 1);
Context.EmitStflg((int)APState.ZBit);
Context.EmitLdc_I4((Op.NZCV >> 3) & 1);
Context.EmitStflg((int)APState.NBit);
Context.Emit(OpCodes.Br_S, LblEnd);
Context.MarkLabel(LblTrue);
EmitDataLoadOpers(Context);
if (CmpOp == CcmpOp.Cmp)
{
Context.Emit(OpCodes.Sub);
Context.EmitZNFlagCheck();
EmitSubsCCheck(Context);
EmitSubsVCheck(Context);
}
else if (CmpOp == CcmpOp.Cmn)
{
Context.Emit(OpCodes.Add);
Context.EmitZNFlagCheck();
EmitAddsCCheck(Context);
EmitAddsVCheck(Context);
}
else
{
throw new ArgumentException(nameof(CmpOp));
}
Context.Emit(OpCodes.Pop);
Context.MarkLabel(LblEnd);
}
