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90 lines
2.2 KiB
90 lines
2.2 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 <stdio.h>
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#include <stdlib.h>
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#include "pin.H"
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// Tool to check that AC flag is handeled correcty, by inserting misaligned read/write
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// before or after selected instructions
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int buff[8];
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#if defined(__cplusplus)
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extern "C"
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#endif
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int GetFlags_asm();
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VOID UnalignedReadAndWrite ()
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{
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char *unalignedPtr = (char *)buff;
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unalignedPtr++;
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int unalignedRead = *((int *)(unalignedPtr));
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unalignedPtr++;
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*((int *)(unalignedPtr)) = unalignedRead;
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}
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BOOL instrumentNext = FALSE;
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VOID Instruction(INS ins, VOID *v)
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{
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//printf ("Instruction at %x\n", INS_address(ins));
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if (INS_Opcode(ins)==XED_ICLASS_POPF
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|| INS_Opcode(ins)==XED_ICLASS_POPFD
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|| INS_Opcode(ins)==XED_ICLASS_POPFQ
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|| instrumentNext)
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{
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if (instrumentNext)
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{
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// IPOINT_BEFORE instrumentation on instruction after popf*
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INS_InsertCall(ins, IPOINT_BEFORE, (AFUNPTR)UnalignedReadAndWrite, IARG_END);
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instrumentNext = FALSE;
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}
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else
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{ // IPOINT_AFTER instrumentation on popf*
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INS_InsertCall(ins, IPOINT_AFTER, (AFUNPTR)UnalignedReadAndWrite, IARG_END);
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instrumentNext = TRUE;
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}
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return;
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}
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}
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// This function is called when the application exits
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VOID Fini(INT32 code, VOID *v)
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{
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}
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// argc, argv are the entire command line, including pin -t <toolname> -- ...
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int main(int argc, char * argv[])
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{
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// Initialize pin
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PIN_Init(argc, argv);
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// Register Instruction to be called to instrument instructions
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INS_AddInstrumentFunction(Instruction, 0);
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// Register Fini to be called when the application exits
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PIN_AddFiniFunction(Fini, 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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