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9 Commits

Author SHA1 Message Date
Alexander Potapenko cae42d23a6 [ASan] Use dylib interposition to hook memory allocation in the dynamic runtime. 
This CL drastically simplifies the way we're hooking the memory allocation routines in ASan on Mac by using dylib interposition to replace the main malloc_zone_* functions. This allows us to avoid replacing the default CFAllocator and drop the CF dependency at all.

Committing this patch will result in the static runtime being broken. A follow-up CL will switch ASan to use the dynamic runtime library.

llvm-svn: 173134
 2013-01-22 09:14:54 +00:00
Alexander Potapenko 0dcd6d9468 [ASan] Do not build the interceptors that use ObjC blocks if the compiler does not support blocks. 
Need to define MISSING_BLOCKS_SUPPORT in this case at buildtime.

Patch by Jack Howarth <howarth@bromo.med.uc.edu>
 

llvm-svn: 169206
 2012-12-04 02:41:47 +00:00
Alexander Potapenko 431ea19327 Intercept signal() and sigaction() within the dynamic runtime on Mac. 
Add a test that ensures that ASan does not allow to override the signal handlers.

llvm-svn: 164118
 2012-09-18 12:49:51 +00:00
Daniel Dunbar 9d098bc09a [asan] Use a relative include path instead of requiring build system involvement. 
llvm-svn: 163414
 2012-09-07 19:57:32 +00:00
Daniel Dunbar 44b3474b0e build: Teach Makefile build system about asan/dynamic subdir. 
llvm-svn: 163413
 2012-09-07 19:57:28 +00:00
Alexander Potapenko 2ebe619340 Re-implement the wrappers for libdispatch functions using blocks where appropriate 
(kudos to Anna Zaks for a good example).
This simplifies the code much and lets us not implement internal parts of libdispatch.

All ASan tests from t32 and t64 should pass with the dylib runtime now.

llvm-svn: 162439
 2012-08-23 09:34:40 +00:00
Alexander Potapenko 02e6f03236 Dynamic interceptors for dispatch_async and dispatch_after. 
llvm-svn: 162202
 2012-08-20 11:59:26 +00:00
Alexander Potapenko dffbb3b330 Intercept siglongjmp and _longjmp under "#if ASAN_INTERCEPT_*" 
llvm-svn: 162103
 2012-08-17 16:27:38 +00:00
Alexander Potapenko c62210e3ff Commit the source and CMake changes that will allow to build ASan runtime 
as a shared library on Mac OS. This will provide an alternative to
mach_override.

llvm-svn: 162091
 2012-08-17 09:00:08 +00:00