Read a register value at run time

[Chen]

Hi all,

I would like to read the value of each instruction's destination
operand at run time, but I didn't figure out how to do it in
InstructionTraceGenerator. Could anyone give me a hint? Thanks in
advance.

Thanks,
Chen

[Mark Gebhart]

Hi Chen,

I wrote this helper function to get a register value from one of my
trace analysis modules:

ir::PTXU64 TraceAnalysis::getRegisterValue(unsigned int tid,
ir::PTXOperand::RegisterType reg) {
executive::EmulatedKernel::RegisterFile rf =
_kernel->getCurrentRegisterFile();
return rf [tid * _kernel->registerCount() + reg];
}

Here _kernel is defined in the initialize function the same as in
MemoryChecker.cpp

_kernel = static_cast< const executive::EmulatedKernel* >( &kernel );

Then you should be able to get a register value using a call along the lines of:

getRegisterValue( tid, instruction->d.reg)

Hope this helps,
Mark

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[Zhongliang Chen]

Hi Mark,

Thank you for your help!

Chen