derek.holloway
7502bf64a4
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25 lines
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===========================
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Limitations
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===========================
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-------------------
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General Limitations
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-------------------
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Operating system support
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*************************
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As the ELF is the file format used for .o object files, binaries, shared libraries and core dumps in Linux.
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We currently only support Linux OS.
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Intra and Intra-library calls
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*****************************
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Gotcha works by rewriting the Global Offset Table (GOT) that links inter-library callsites and variable references to their targets.
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Because of this Gotcha cannot wrap intra-library calls (such as a call to a static function in C) or calls in statically-linked binaries.
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Binary rewriting technology such as DyninstAPI_ is more appropriate for these use cases.
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Additionally, the function pointer wrapping feature with GOTCHA only applies to function pointers created after wrapping functions.
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The function pointers created before wrapping would not be wrapped by gotcha.
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.. _DyninstAPI: https://github.com/dyninst/dyninst
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