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118 lines
3.4 KiB
118 lines
3.4 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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/*
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* This tool verifies that in case of linking an image with a position independent executable,
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* the address of the first instruction executed within the image (which returned by IMG_EntryAddress API)
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* is absolute and correct.
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*/
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#include "pin.H"
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#include <iostream>
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#include <fstream>
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#ifdef TARGET_MAC
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#define ENTRY_RTN_NAME "_main"
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#endif
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#ifdef TARGET_LINUX
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#define ENTRY_RTN_NAME "_start"
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#endif
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#ifdef TARGET_WINDOWS
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#define ENTRY_RTN_NAME "unnamedImageEntryPoint"
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#endif
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using std::ofstream;
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using std::string;
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using std::endl;
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/* ===================================================================== */
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/* Commandline Switches */
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/* ===================================================================== */
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KNOB<string> KnobOutputFile(KNOB_MODE_WRITEONCE, "pintool",
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"o", "pic_image.out", "specify file name");
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ofstream TraceFile;
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/* ===================================================================== */
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// Utilities
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/* ===================================================================== */
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/*!
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* Print out help message.
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*/
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INT32 Usage()
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{
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std::cerr << "This tool retrieves the first instruction of loaded image" << endl
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<< "by using IMG_EntryAddress API. Address is absolute, regardless of image type (e.g. PIE)" << endl;
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std::cerr << KNOB_BASE::StringKnobSummary() << endl;
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return -1;
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}
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/* ===================================================================== */
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// Analysis routines
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/* ===================================================================== */
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VOID ImageLoad(IMG img, VOID *arg)
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{
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if (!IMG_IsMainExecutable(img))
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return;
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ADDRINT entry = IMG_EntryAddress(img);
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TraceFile << "Application Entry Address is at : " << std::hex << entry << std::endl;
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ADDRINT start_address = RTN_Address(RTN_FindByName(img, ENTRY_RTN_NAME));
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TraceFile << ENTRY_RTN_NAME << " Address is : " << std::hex << start_address << std::endl << std::endl;
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TraceFile << ENTRY_RTN_NAME << " Address and Application Entry Address supposed to be identical!" << std::endl;
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assert( entry == start_address);
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return;
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}
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/*!
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* The main procedure of the tool.
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* This function is called when the application image is loaded but not yet started.
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* @param[in] argc total number of elements in the argv array
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* @param[in] argv array of command line arguments,
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* including pin -t <toolname> -- ...
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*/
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int main(int argc, char *argv[])
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{
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// Initialize PIN library. Print help message if -h(elp) is specified
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// in the command line or the command line is invalid
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if( PIN_Init(argc,argv) )
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{
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return Usage();
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}
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PIN_InitSymbols();
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TraceFile.open(KnobOutputFile.Value().c_str());
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IMG_AddInstrumentFunction(ImageLoad, 0);
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// Start the program, never returns
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PIN_StartProgram();
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return 0;
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}
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/* ===================================================================== */
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/* eof */
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/* ===================================================================== */
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