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| author | Alexey Samsonov <samsonov@google.com> | 2012-11-23 10:14:44 +0000 |
|---|---|---|
| committer | Alexey Samsonov <samsonov@google.com> | 2012-11-23 10:14:44 +0000 |
| commit | f3950c6d6acf53fe60735f6d38715c1ea6df814b (patch) | |
| tree | 71bd7ad6e521c930c3b6044ea6b43ce13d7969b6 /lib/asan/asan_linux.cc | |
| parent | 0870028410087e67a0049c76cb7c64f02c260d24 (diff) | |
| download | compiler-rt-f3950c6d6acf53fe60735f6d38715c1ea6df814b.tar.gz compiler-rt-f3950c6d6acf53fe60735f6d38715c1ea6df814b.tar.bz2 compiler-rt-f3950c6d6acf53fe60735f6d38715c1ea6df814b.tar.xz | |
[ASan] intercept swapcontext on Linux only
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@168509 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/asan/asan_linux.cc')
| -rw-r--r-- | lib/asan/asan_linux.cc | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/asan/asan_linux.cc b/lib/asan/asan_linux.cc index 2e6934e0..a70adeee 100644 --- a/lib/asan/asan_linux.cc +++ b/lib/asan/asan_linux.cc @@ -170,6 +170,23 @@ void GetStackTrace(StackTrace *stack, uptr max_s, uptr pc, uptr bp) { } } +#if !ASAN_ANDROID +void ClearShadowMemoryForContext(void *context) { + ucontext_t *ucp = (ucontext_t*)context; + uptr sp = (uptr)ucp->uc_stack.ss_sp; + uptr size = ucp->uc_stack.ss_size; + // Align to page size. + uptr bottom = sp & ~(kPageSize - 1); + size += sp - bottom; + size = RoundUpTo(size, kPageSize); + PoisonShadow(bottom, size, 0); +} +#else +void ClearShadowMemoryForContext(void *context) { + UNIMPLEMENTED(); +} +#endif + } // namespace __asan #endif // __linux__ |