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  /*! @file
   *  pin tool combined from multi-DLLs (main_dll, dynamic_secondary_dll, static_secondary_dll). 
   *  This is the "main DLL", use PIN API only in this DLL
   *  usage of PIN API in dynamic_secondary_dll and static_secondary_dll is not allowed
   *  (see README for more inforamtion)
   */
  
  #include <iostream>
  #include <fstream>
  #include "pin.H"
  namespace WINDOWS
  {
  #include <windows.h>
  }
  
  using namespace std;
  
  /* ===================================================================== */
  /* Global Variables and Declerations */
  /* ===================================================================== */
  
  PIN_LOCK lock;
  
  typedef VOID (* BEFORE_BBL)(ADDRINT ip);
  
  // Functions pointers for dynamic_secondary_dll
  BEFORE_BBL pBeforeBBL2;
  WINDOWS::FARPROC pInit2;
  WINDOWS::FARPROC pFini2;
  
  // Dll imports for static_secondary_dll
  extern "C" __declspec( dllimport ) VOID BeforeBBL1(ADDRINT ip);
  extern "C" __declspec( dllimport ) VOID Init1();
  extern "C" __declspec( dllimport ) VOID Fini1();
  
  /* ===================================================================== */
  
  // This function is called before every basic block
  VOID PIN_FAST_ANALYSIS_CALL BeforeBBL(ADDRINT ip) 
  {
      PIN_GetLock(&lock, PIN_GetTid());
      BeforeBBL1(ip);
      pBeforeBBL2(ip);
      PIN_ReleaseLock(&lock);
  }
  
  /* ===================================================================== */
  
  // Pin calls this function every time a new trace is encountered
  VOID Trace(TRACE trace, VOID *v)
  {
      // Visit every basic block  in the trace
      for (BBL bbl = TRACE_BblHead(trace); BBL_Valid(bbl); bbl = BBL_Next(bbl))
      {
          // Insert a call to BeforeBBL before every bbl, passing the ip address.
          BBL_InsertCall(bbl, IPOINT_BEFORE, (AFUNPTR)BeforeBBL, IARG_FAST_ANALYSIS_CALL, 
                         IARG_INST_PTR, IARG_END);
      }
  }
  
  VOID ThreadStart(THREADID threadid, CONTEXT *ctxt, INT32 flags, VOID *v)
  {
      PIN_GetLock(&lock, PIN_GetTid());
      BeforeBBL1(0);
      pBeforeBBL2(0);
      PIN_ReleaseLock(&lock);
  }
  
  VOID ThreadFini(THREADID threadid, const CONTEXT *ctxt, INT32 code, VOID *v)
  {
      PIN_GetLock(&lock, PIN_GetTid());
      BeforeBBL1(0);
      pBeforeBBL2(0);
      PIN_ReleaseLock(&lock);
  }
  
  /* ===================================================================== */
  
  // This function is called when the application exits
  VOID Fini(INT32 code, VOID *v)
  {
      Fini1();
      pFini2();
  }
  
  /* ===================================================================== */
  
  int main(int argc, char * argv[])
  {
  
      // Initialize pin
      PIN_Init(argc, argv);
  
  
      PIN_InitLock(&lock);
  
      // Register Trace() to be called to instrument traces
      TRACE_AddInstrumentFunction(Trace, 0);
  
      // Register Fini() to be called when the application exits
      PIN_AddFiniFunction(Fini, 0);
  
      // Call Static secondary dll Init1()
      Init1();
  
      // Dynamic secondary dll - load library, initialize function pointers
      // and call Init2()
      WINDOWS::HMODULE module = WINDOWS::LoadLibrary("dynamic_secondary_dll.dll");
      if(module == NULL)
      {
          cerr << "Failed to load dynamic_secondary_dll.dll" << endl;
          exit(1);
      }
      pInit2 = WINDOWS::GetProcAddress(module, "Init2");
      pBeforeBBL2 = reinterpret_cast<BEFORE_BBL>(WINDOWS::GetProcAddress(module, "BeforeBBL2"));
      pFini2 = WINDOWS::GetProcAddress(module, "Fini2");
      if(pInit2 == NULL || pBeforeBBL2 == NULL || pFini2 == NULL)
      {
          cerr << "Failed to find proc addresses in dynamic_secondary_dll.dll" << endl;
          exit(1);
      }
      pInit2(); 
      
      // Start the program, never returns
      PIN_StartProgram();
      
      return 0;
  }
  
  