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How to call existing C functions in executable file during debug session? [message #677655]

Thu, 09 June 2011 04:54

Krasimir.K

Messages: 2
Registered: July 2009

Junior Member

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 suspend 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);

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.

[Updated on: Thu, 09 June 2011 06:09]

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