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117 lines
3.1 KiB
117 lines
3.1 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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/*! @file
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* This test tool instruments every instruction of the sw_interrupt_app program
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* to check correctness of the context recovery for software interrupts.
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*/
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#include "pin.H"
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#include <string>
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#include <iostream>
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using std::cerr;
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using std::endl;
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using std::cout;
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using std::string;
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/* ===================================================================== */
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/* Global variables and declarations */
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/* ===================================================================== */
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typedef int (__cdecl * DO_LOOP_TYPE)();
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static volatile int doLoopPred = 1;
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/* ===================================================================== */
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int rep_DoLoop()
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{
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PIN_LockClient();
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volatile int localPred = doLoopPred;
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PIN_UnlockClient();
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return localPred;
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}
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/*!
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* Context change callback.
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*/
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static void OnContextChange(THREADID threadIndex,
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CONTEXT_CHANGE_REASON reason,
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const CONTEXT *ctxtFrom,
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CONTEXT *ctxtTo,
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INT32 info,
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VOID *v)
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{
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PIN_LockClient();
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static volatile INT32 contextChnageCount = 0;
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contextChnageCount++;
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if (reason == CONTEXT_CHANGE_REASON_EXCEPTION)
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{
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#if 0
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UINT32 exceptionCode = info;
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ADDRINT exceptAddr = PIN_GetContextReg(ctxtFrom, REG_INST_PTR);
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cerr << "CONTEXT_CHANGE_REASON_EXCEPTION: " <<
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"Exception code " << hex << exceptionCode << "." <<
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"Context IP " << hex << exceptAddr << "." <<
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endl;
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#endif
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}
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if(contextChnageCount == 20)
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{
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doLoopPred = 0;
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}
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PIN_UnlockClient();
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}
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VOID ImageLoad(IMG img, VOID *v)
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{
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cout << IMG_Name(img) << endl;
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if ( ! IMG_IsMainExecutable(img) )
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{
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return;
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}
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const string sFuncName("DoLoop");
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for (SYM sym = IMG_RegsymHead(img); SYM_Valid(sym); sym = SYM_Next(sym))
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{
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string undFuncName = PIN_UndecorateSymbolName(SYM_Name(sym), UNDECORATION_NAME_ONLY);
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if (undFuncName == sFuncName)
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{
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RTN rtn = RTN_FindByAddress(IMG_LowAddress(img) + SYM_Value(sym));
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if (RTN_Valid(rtn))
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{
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//eventhough this is not an error - print to cerr (in order to see it on the screen)
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cerr << "Replacing DoLoop() in " << IMG_Name(img) << endl;
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RTN_Replace(rtn, AFUNPTR(rep_DoLoop));
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}
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}
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}
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}
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/*!
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* The main procedure of the tool.
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*/
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int main(int argc, char *argv[])
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{
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PIN_InitSymbols();
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PIN_Init(argc, argv);
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IMG_AddInstrumentFunction(ImageLoad, 0);
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PIN_AddContextChangeFunction(OnContextChange, 0);
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PIN_StartProgram();
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return 0;
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}
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