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60 lines
1.6 KiB
60 lines
1.6 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 inserts a lot of useless instrumentation just to put
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* pressure on the Pin register allocator.
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*/
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#include <pin.H>
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static const unsigned NUM_SCRATCH = 4;
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static REG ScratchRegs[NUM_SCRATCH];
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static void InstrumentIns(INS, VOID *);
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static ADDRINT MakePressure(ADDRINT, ADDRINT, ADDRINT, ADDRINT, ADDRINT);
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int main(int argc, char * argv[])
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{
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PIN_Init(argc, argv);
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for (unsigned i = 0; i < NUM_SCRATCH; i++)
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ScratchRegs[i] = PIN_ClaimToolRegister();
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INS_AddInstrumentFunction(InstrumentIns, 0);
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PIN_StartProgram();
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return 0;
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}
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static void InstrumentIns(INS ins, VOID *)
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{
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REG retReg = ScratchRegs[INS_Address(ins) % NUM_SCRATCH];
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IARGLIST args = IARGLIST_Alloc();
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for (unsigned i = 0; i < NUM_SCRATCH; i++)
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IARGLIST_AddArguments(args, IARG_REG_VALUE, ScratchRegs[i], IARG_END);
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INS_InsertCall(ins, IPOINT_BEFORE, AFUNPTR(MakePressure),
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IARG_RETURN_REGS, retReg,
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IARG_REG_VALUE, REG_STACK_PTR,
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IARG_IARGLIST, args,
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IARG_END);
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IARGLIST_Free(args);
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}
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static ADDRINT MakePressure(ADDRINT sp, ADDRINT s0, ADDRINT s1, ADDRINT s2, ADDRINT s3)
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{
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return sp + s0 + s1 + s2 + s3;
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}
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