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Re: [cdt-dev] How to call existing C functions in executable file during debug session?
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> -----Original Message-----
> From: cdt-dev-bounces@xxxxxxxxxxx
> [mailto:cdt-dev-bounces@xxxxxxxxxxx] On Behalf Of Krasimir Kostadinov
> Sent: Wednesday, June 22, 2011 7:22 AM
> To: cdt-dev@xxxxxxxxxxx
> Subject: [cdt-dev] How to call existing C functions in
> executable file during debug session?
>
> Hi,
> Before DSF I was able to call functions and evaluate variable/array
> values existing in executable program with a single code:
> ICDITarget target;
> ICDIStackFrame stackFrame;
> ....(wait on debug listener for suspend event and get target
> and stackFrame)...
> String result = target.evaluateExpressionToString(stackFrame, "X");
> where X can be variable, element of array, function, field in
> struct etc.
>
> Now with DSF I'm able to read and set variables and array values with
> following code, but not to call function:
>
> IExpressionDMContext expression = expr.createExpression(dmContext,
> "float_array[0]");
> String formatId = IFormattedValues.NATURAL_FORMAT;
> FormattedValueDMContext valueDmc =
> service.getFormattedValueContext(expression, formatId);
> final DataRequestMonitor<IExpressionDMData> drm = new
> DataRequestMonitor<IExpressionDMData>(session.getExecutor(), null){
> @Override
> protected void handleCompleted() {
> IExpressionDMData data = getData();
> System.out.println("handleCompleted = " + getData());
> }
> };
>
> final DataRequestMonitor<FormattedValueDMData> drmf = new
> DataRequestMonitor<FormattedValueDMData>(session.getExecutor(), null){
> @Override
> protected void handleCompleted() {
> FormattedValueDMData data = getData();
> String formattedValue = data.getFormattedValue();
> System.out.println("handleCompleted formattedValue = " +
> formattedValue);
> }
> };
>
> service.getExpressionData(expression, drm);
> service.writeExpression(expression, "42", formatId, drmf);
To get the value of an expression you should use
IExpressions.getFormattedExpressionValue(...)
I tried calling a method in the Expressions view and it works
so I believe the above should fix your problem.
Marc
>
> I tried to create function expression with :
> IExpressionDMContext funcCall = expr.createExpression(dmContext,
> "printX(\"5.5\")");
> where printX is function in C source code (not mangled CPP function)
> but getData() in DataRequestMonitor return null.
>
> I tried to got answer from cdt/dsf plugins source but the only place
> which I found uses DebugPlugin.getDefault().getExpressionManager();
> But this code include my function in Expression view, where I don't
> want to see it.
>
> Can somebody give me a hint how I can do it?
>
> BTW : I think that current DSF is much flexible then CDI and adding
> new debuggers can increase popularity of Eclipse in embedded world.
>
> --
> Best Regards,
> Krasimir Kostadinov
> _______________________________________________
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> https://dev.eclipse.org/mailman/listinfo/cdt-dev
>
