[PATCH] D15728: [cfi] Support for dlopen and dlclose

[Evgeniy Stepanov via llvm-commits]

eugenis updated this revision to Diff 44918.
eugenis added a comment.

A new approach.
dlclose may unmap (and dlopen may map) multiple libraries, so we actually need to do the entire dl_iterate_phdr run and update all libraries. For dlclose, we also need to detect libraries that have disappeared from the address space, so we do dl_iterate_phdr before and after dlclose and compare the results.


Repository:
  rL LLVM

http://reviews.llvm.org/D15728

Files:
  lib/cfi/cfi.cc
  lib/sanitizer_common/sanitizer_common.cc
  lib/sanitizer_common/sanitizer_common.h
  lib/sanitizer_common/sanitizer_linux_libcdep.cc
  test/cfi/cross-dso/dlopen.cpp

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