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//
// This tool prints a trace of image load and unload events
//

#include <stdio.h>
#include "pin.H"

FILE * trace;

// Pin calls this function every time a new img is loaded
// It can instrument the image, but this example does not
// Note that imgs (including shared libraries) are loaded lazily

VOID ImageLoad(IMG img, VOID *v)
{
    fprintf(trace, "Loading %s, Image id = %d\n", IMG_Name(img).c_str(), IMG_Id(img));
}

// Pin calls this function every time a new img is unloaded
// You can't instrument an image that is about to be unloaded
VOID ImageUnload(IMG img, VOID *v)
{
    fprintf(trace, "Unloading %s\n", IMG_Name(img).c_str());
}

// This function is called when the application exits
// It prints the name and count for each procedure
VOID Fini(INT32 code, VOID *v)
{
    fclose(trace);
}

// argc, argv are the entire command line, including pin -t <toolname> -- ...
int main(int argc, char * argv[])
{
    trace = fopen("imageload.out", "w");

    // Initialize symbol processing
    PIN_InitSymbols();
    
    // Initialize pin
    PIN_Init(argc, argv);
    
    // Register ImageLoad to be called when an image is loaded
    IMG_AddInstrumentFunction(ImageLoad, 0);

    // Register ImageUnload to be called when an image is unloaded
    IMG_AddUnloadFunction(ImageUnload, 0);

    // Register Fini to be called when the application exits
    PIN_AddFiniFunction(Fini, 0);
    
    // Start the program, never returns
    PIN_StartProgram();
    
    return 0;
}