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107 lines
3.0 KiB
107 lines
3.0 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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#include <assert.h>
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#include <stdio.h>
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#include "pin.H"
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UINT64 icount = 0;
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#include "swizzle_util.h"
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using std::string;
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// When an image is loaded, check for a MyAlloc function
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VOID Image(IMG img, VOID *v)
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{
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//fprintf(stderr, "Loading %s\n",IMG_name(img));
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for (SEC sec = IMG_SecHead(img); SEC_Valid(sec); sec = SEC_Next(sec))
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{
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//fprintf(stderr, " sec %s\n", SEC_name(sec).c_str());
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for (RTN rtn = SEC_RtnHead(sec); RTN_Valid(rtn); rtn = RTN_Next(rtn))
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{
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//fprintf(stderr, " rtn %s\n", RTN_Name(rtn).c_str());
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// Swizzle the return value of MyAlloc
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if (RTN_Name(rtn) == "MyAlloc")
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{
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RTN_Open(rtn);
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fprintf(stderr, "Adding Swizzle to %s\n", "MyAlloc");
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RTN_InsertCall(rtn, IPOINT_AFTER, AFUNPTR(SwizzleRef), IARG_FUNCRET_EXITPOINT_REFERENCE, IARG_END);
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RTN_Close(rtn);
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}
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if (RTN_Name(rtn) == "MyFree")
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{
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RTN_Open(rtn);
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RTN_InsertCall(rtn, IPOINT_BEFORE, AFUNPTR(UnswizzleRef), IARG_FUNCARG_ENTRYPOINT_REFERENCE, 0, IARG_END);
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RTN_Close(rtn);
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}
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}
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}
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}
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KNOB<BOOL> KnobVerbose(KNOB_MODE_WRITEONCE, "pintool", "log",
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"0", "write a log file");
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FILE* fout = 0;
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VOID Instruction(INS ins, VOID *v)
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{
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// Don't allow s to be deallocated before we've finished with d!
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string s = hexstr(INS_Address(ins));
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const char *d = s.c_str();
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if (!INS_IsStandardMemop(ins) && !INS_HasMemoryVector(ins))
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{
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// We don't know how to treat these instructions
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return;
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}
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if (fout) {
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fprintf(fout, "Checking: %s %s\n", d, INS_Disassemble(ins).c_str());
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fflush(fout);
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}
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for (UINT32 memopIdx=0; memopIdx < INS_MemoryOperandCount(ins); memopIdx++)
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{
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if (fout) {
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fprintf(fout, "REWRITING%d %s\n", memopIdx, d);
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fflush(fout);
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}
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REG scratchReg = REG(int(REG_INST_G0)+memopIdx);
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INS_InsertCall(ins, IPOINT_BEFORE,
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AFUNPTR(Unswizzle),
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IARG_MEMORYOP_EA, memopIdx,
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IARG_RETURN_REGS, scratchReg, IARG_END);
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INS_RewriteMemoryOperand(ins, memopIdx, scratchReg);
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}
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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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if (KnobVerbose)
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fout = fopen("swizzle2.log","w");
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INS_AddInstrumentFunction(Instruction, 0);
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IMG_AddInstrumentFunction(Image, 0);
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// Never returns
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PIN_StartProgram();
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return 0;
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}
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