diff options
Diffstat (limited to 'compiler-rt/lib')
3 files changed, 49 insertions, 0 deletions
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_posix.cc b/compiler-rt/lib/sanitizer_common/sanitizer_posix.cc index a73e7419a42..ffe91df1a59 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_posix.cc +++ b/compiler-rt/lib/sanitizer_common/sanitizer_posix.cc @@ -228,6 +228,22 @@ void RawWrite(const char *buffer) { } } +bool GetCodeRangeForFile(const char *module, uptr *start, uptr *end) { + uptr s, e, off, prot; + InternalMmapVector<char> fn(4096); + fn.push_back(0); + MemoryMappingLayout proc_maps(/*cache_enabled*/false); + while (proc_maps.Next(&s, &e, &off, &fn[0], fn.capacity(), &prot)) { + if ((prot & MemoryMappingLayout::kProtectionExecute) != 0 + && internal_strcmp(module, &fn[0]) == 0) { + *start = s; + *end = e; + return true; + } + } + return false; +} + } // namespace __sanitizer #endif // SANITIZER_LINUX || SANITIZER_MAC diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h index ed281997f1a..65bcac6338d 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h +++ b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h @@ -126,6 +126,9 @@ typedef void (*fill_profile_f)(uptr start, uptr rss, bool file, // |stats_size| elements. void GetMemoryProfile(fill_profile_f cb, uptr *stats, uptr stats_size); +// Returns code range for the specified module. +bool GetCodeRangeForFile(const char *module, uptr *start, uptr *end); + #endif // SANITIZER_WINDOWS } // namespace __sanitizer diff --git a/compiler-rt/lib/sanitizer_common/tests/sanitizer_procmaps_test.cc b/compiler-rt/lib/sanitizer_common/tests/sanitizer_procmaps_test.cc new file mode 100644 index 00000000000..d16e2eebf98 --- /dev/null +++ b/compiler-rt/lib/sanitizer_common/tests/sanitizer_procmaps_test.cc @@ -0,0 +1,30 @@ +//===-- sanitizer_procmaps_test.cc ----------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file is a part of ThreadSanitizer/AddressSanitizer runtime. +// +//===----------------------------------------------------------------------===// +#include "sanitizer_common/sanitizer_procmaps.h" +//#include "sanitizer_common/sanitizer_internal_defs.h" +//#include "sanitizer_common/sanitizer_libc.h" +#include "gtest/gtest.h" + +namespace __sanitizer { + +#ifdef SANITIZER_LINUX +TEST(ProcMaps, CodeRange) { + uptr start, end; + bool res = GetCodeRangeForFile("[vdso]", &start, &end); + EXPECT_EQ(res, true); + EXPECT_GT(start, (uptr)0); + EXPECT_LT(start, end); +} +#endif + +} // namespace __sanitizer |
