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Intel Open Source License 

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#include "pin.H"
#include <iostream>
#include <fstream>

/* ================================================================== */
// Global variables
/* ================================================================== */

std::ostream * out = &cerr;

/* ===================================================================== */
// Command line switches
/* ===================================================================== */

KNOB<string> KnobOutputFile(KNOB_MODE_WRITEONCE,  "pintool", "o", "", "specify file name for output");

/* ===================================================================== */
// Utilities
/* ===================================================================== */

/*!
 *  Print out help message.
 */
INT32 Usage()
{
    cerr << "This tool prints out the stack filtered by the dynamicaly created functions only" << endl;
    cerr << KNOB_BASE::StringKnobSummary() << endl;
    return -1;
}

/* ===================================================================== */
// Analysis routines
/* ===================================================================== */

VOID RtnCallPrint(CHAR * rtnName)
{
    *out << "Before run " << rtnName << endl;
}

/* ===================================================================== */
// Instrumentation callbacks
/* ===================================================================== */

// Pin calls this function every time a new rtn is executed
VOID Routine(RTN rtn, VOID *v)
{
    if (!RTN_IsDynamic(rtn))
    {
        return;
    }

    *out << "Just discovered " << RTN_Name(rtn) << endl;

    RTN_Open(rtn);

    // Insert a call at the entry point of a routine to increment the call count
    RTN_InsertCall(rtn, IPOINT_BEFORE, (AFUNPTR)RtnCallPrint, IARG_ADDRINT, RTN_Name(rtn).c_str(), IARG_END);

    RTN_Close(rtn);
}

/*!
 * Print out analysis results.
 * This function is called when the application exits.
 * @param[in]   code            exit code of the application
 * @param[in]   v               value specified by the tool in the
 *                              PIN_AddFiniFunction function call
 */
VOID Fini(INT32 code, VOID *v)
{
    const string fileName = KnobOutputFile.Value();
    if (!fileName.empty())
    {
        delete out;
    }
}

/*!
 * The main procedure of the tool.
 * This function is called when the application image is loaded but not yet started.
 * @param[in]   argc            total number of elements in the argv array
 * @param[in]   argv            array of command line arguments,
 *                              including pin -t <toolname> -- ...
 */
int main(int argc, char *argv[])
{
    // Initialize symbol processing
    PIN_InitSymbols();

    // Initialize PIN library. Print help message if -h(elp) is specified
    // in the command line or the command line is invalid
    if(PIN_Init(argc,argv))
    {
        return Usage();
    }

    const string fileName = KnobOutputFile.Value();

    if (!fileName.empty())
    {
        out = new std::ofstream(fileName.c_str());
    }

    // Register Routine to be called to instrument rtn
    RTN_AddInstrumentFunction(Routine, 0);

    // Register function to be called when the application exits
    PIN_AddFiniFunction(Fini, NULL);

    // Start the program, never returns
    PIN_StartProgram();

    return 0;
}

/* ===================================================================== */
/* eof */
/* ===================================================================== */
