public static void EmitBxWritePc(ArmEmitterContext context, Operand pc, int sourceRegister = 0)
{
bool isReturn = sourceRegister == RegisterAlias.Aarch32Lr || IsA32Return(context);
Operand mode = context.BitwiseAnd(pc, Const(1));
SetFlag(context, PState.TFlag, mode);
Operand addr = context.ConditionalSelect(mode, context.BitwiseAnd(pc, Const(~1)), context.BitwiseAnd(pc, Const(~3)));
InstEmitFlowHelper.EmitVirtualJump(context, addr, isReturn);
}
private static void EmitAluWritePc(ArmEmitterContext context, Operand value)
{
Debug.Assert(value.Type == OperandType.I32);
if (IsThumb(context.CurrOp))
{
context.StoreToContext();
bool isReturn = IsA32Return(context);
Operand addr = context.BitwiseOr(value, Const(1));
InstEmitFlowHelper.EmitVirtualJump(context, addr, isReturn);
}
else
{
EmitBxWritePc(context, value);
}
}
private static void EmitAluWritePc(ArmEmitterContext context, Operand value)
{
Debug.Assert(value.Type == OperandType.I32);
if (((OpCode32)context.CurrOp).IsThumb())
{
bool isReturn = IsA32Return(context);
if (!isReturn)
{
context.StoreToContext();
}
InstEmitFlowHelper.EmitVirtualJump(context, value, isReturn);
}
else
{
EmitBxWritePc(context, value);
}
}