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

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

namespace WIND
{
#include <windows.h>  
}

// Whether to check current process id received in KnobCurrentProcessId
KNOB<BOOL> KnobLoadSystemDlls(KNOB_MODE_WRITEONCE,         "pintool",
                                         "load_system_dlls", "0", "load system dlls in main()");


// 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)
{
    printf("Loading %s, Image id = %d\n", IMG_Name(img).c_str(), IMG_Id(img));
    fflush(stdout);
}

// 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)
{
    printf("Unloading %s\n", IMG_Name(img).c_str());
    fflush(stdout);
}

VOID ThreadStart(THREADID threadid, CONTEXT *ctxt, INT32 flags, VOID *v)
{
    printf("Got thread start notification\n");
    fflush(stdout);    
}

void FiniCore()
{
    fflush(stdout);
}

VOID Fini(INT32 code, VOID *v)
{
    FiniCore();
}

class PROBE_FINI_OBJECT
{
  public:
    ~PROBE_FINI_OBJECT()
    {
        FiniCore();
    }
};

VOID AppStart(VOID *v)
{
    printf("Application started\n");
    fflush(stdout);
}

// argc, argv are the entire command line, including pin -t <toolname> -- ...
int main(int argc, char * argv[])
{ 
    // 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);
    
    printf("In tool's main, probed = %d\n", PIN_IsProbeMode()); 
    
    if(KnobLoadSystemDlls)
    {
        WIND::HMODULE h1 = WIND::LoadLibrary("RPCRT4.dll");
        if(h1 == NULL)
        {
            printf("Failed to load RPCRT4\n");
            fflush(stdout);
            exit(-1);
        }     
        WIND::HMODULE h2 = WIND::LoadLibrary("advapi32.dll");
        if(h1 == NULL)
        {
            printf("Failed to load advapi32\n");
            fflush(stdout);
            exit(-1);
        }
        WIND::HMODULE h3 = WIND::LoadLibrary("dbghelp.dll");
        if(h1 == NULL)
        {
            printf("Failed to load dbghelp\n");
            fflush(stdout);
            exit(-1);
        }
        WIND::HMODULE h4 = WIND::LoadLibrary("user32.dll");
        if(h1 == NULL)
        {
            printf("Failed to load user32\n");
            fflush(stdout);
            exit(-1);
        }       
    }    

    // Never returns
    if ( PIN_IsProbeMode() )
    {
        static PROBE_FINI_OBJECT finiObject;      
        PIN_AddApplicationStartFunction(AppStart, 0);     
        PIN_StartProgramProbed();
    }
    else
    {
        PIN_AddThreadStartFunction(ThreadStart, 0);
        PIN_AddFiniFunction(Fini, 0);     
        PIN_StartProgram();
    }    
        
    return 0;
}

