llvm-project/compiler-rt
Evgeniy Stepanov 4f0e10fff9 [hwasan] Add a (almost) no-interceptor mode.
Summary:
The idea behind this change is to allow sanitization of libc. We are prototyping on Bionic,
but the tool interface will be general enough (or at least generalizable) to support any other libc.

When libc depends on libclang_rt.hwasan, the latter can not interpose libc functions.
In fact, majority of interceptors become unnecessary when libc code is instrumented.

This change gets rid of most hwasan interceptors and provides interface for libc to notify
hwasan about thread creation and destruction events. Some interceptors (pthread_create)
are kept under #ifdef to enable testing with uninstrumented libc. They are expressed in
terms of the new libc interface.

The new cmake switch, COMPILER_RT_HWASAN_WITH_INTERCEPTORS, ON by default, builds testing
version of the library with the aforementioned pthread_create interceptor.
With the OFF setting, the library becomes more of a libc plugin.

Reviewers: vitalybuka, kcc, jfb

Subscribers: srhines, kubamracek, mgorny, jfb, llvm-commits

Differential Revision: https://reviews.llvm.org/D50922

llvm-svn: 340216
2018-08-20 21:49:15 +00:00
..
cmake [CMake] Don't parse target triple except for arch 2018-08-14 18:01:19 +00:00
docs [sanitizers] Make it possible to XFAIL on the effective target, not just the default. 2016-08-09 11:50:53 +00:00
include [hwasan] Add a (almost) no-interceptor mode. 2018-08-20 21:49:15 +00:00
lib [hwasan] Add a (almost) no-interceptor mode. 2018-08-20 21:49:15 +00:00
test [hwasan] Add a (almost) no-interceptor mode. 2018-08-20 21:49:15 +00:00
unittests Allow compiler-rt test targets to work with multi-config CMake generators 2017-11-13 12:57:54 +00:00
utils [sanitizer] Cleanup sorting functions 2018-05-09 20:42:11 +00:00
www
.arcconfig [compiler-rt] Set up .arcconfig to point to new Diffusion CRT repository 2017-12-06 20:55:32 +00:00
.gitignore Add .pyc files to .gitignore to compiler-rt 2017-07-24 21:51:12 +00:00
CMakeLists.txt [hwasan] Add a (almost) no-interceptor mode. 2018-08-20 21:49:15 +00:00
CODE_OWNERS.TXT [sanitizers] remove earthdok@ from owners 2016-05-18 18:52:18 +00:00
CREDITS.TXT
LICENSE.TXT Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
README.txt

README.txt

Compiler-RT
================================

This directory and its subdirectories contain source code for the compiler
support routines.

Compiler-RT is open source software. You may freely distribute it under the
terms of the license agreement found in LICENSE.txt.

================================