[PATCH] D15659: [cfi] Cross-DSO CFI diagnostic mode (compiler-rt part)

[Evgeniy Stepanov via llvm-commits]

eugenis created this revision.
eugenis added reviewers: pcc, kcc.
eugenis added a subscriber: llvm-commits.
eugenis set the repository for this revision to rL LLVM.

* add __cfi_slowpath_diag with a 3rd parameter which a pointer to the diagnostic info for the ubsan handlers.
* __cfi_check gets a 3rd parameter as well.
* unify vcall/cast/etc and icall diagnostic info format, and merge the handlers to have a single entry point (actually two points due to abort/noabort variants).
* tests

Note that this comes with a tiny overhead in the non-diag mode: __cfi_slowpath must pass 0 as the 3rd argument to __cfi_check.


Repository:
  rL LLVM

http://reviews.llvm.org/D15659

Files:
  lib/cfi/CMakeLists.txt
  lib/cfi/cfi.cc
  lib/ubsan/ubsan_handlers.cc
  lib/ubsan/ubsan_handlers.h
  lib/ubsan/ubsan_handlers_cxx.cc
  lib/ubsan/ubsan_handlers_cxx.h
  test/cfi/cross-dso/icall/diag.cpp
  test/cfi/cross-dso/icall/icall-from-dso.cpp
  test/cfi/cross-dso/icall/icall.cpp
  test/cfi/cross-dso/simple-fail.cpp

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