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llvm-project/compiler-rt/lib/asan
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Evgeniy Stepanov 989299c42b [asan] Use dynamic shadow on 32-bit Android. 
Summary:
The following kernel change has moved ET_DYN base to 0x4000000 on arm32:
https://marc.info/?l=linux-kernel&m=149825162606848&w=2

Switch to dynamic shadow base to avoid such conflicts in the future.

Reserve shadow memory in an ifunc resolver, but don't use it in the instrumentation
until PR35221 is fixed. This will eventually let use save one load per function.

Reviewers: kcc

Subscribers: aemerson, srhines, kubamracek, kristof.beyls, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D39393

llvm-svn: 317943
 		2017-11-10 22:27:48 +00:00
..
scripts Remove ld.config.txt for Android O. 2017-09-05 21:51:20 +00:00
tests [cmake] [asan] Remove unnecessary gtest dep from dynamic tests 2017-10-12 21:07:43 +00:00
.clang-format Tell clang-format that (most) sanitizers are written using Google style guide. 2015-11-19 22:11:10 +00:00
CMakeLists.txt [asan] Use dynamic shadow on 32-bit Android. 2017-11-10 22:27:48 +00:00
README.txt [ASan] Fix the links to bugs and wikipages. 2015-12-04 17:37:40 +00:00
asan.syms.extra [asan] Export __sancov_* symbols symbols. 2017-01-31 20:23:07 +00:00
asan_activation.cc [sanitizer-coverage] nuke more stale code 2017-06-02 00:52:35 +00:00
asan_activation.h [ASan] Change activation strategy. 2014-12-19 20:35:53 +00:00
asan_activation_flags.inc ASAN activate/deactive controls thread_local_quarantine_size_kb option. 2017-01-12 18:51:25 +00:00
asan_allocator.cc [Sanitizers] ASan: detect new/delete calls with mismatched alignment. 2017-10-25 17:21:37 +00:00
asan_allocator.h [Sanitizers] ASan: detect new/delete calls with mismatched alignment. 2017-10-25 17:21:37 +00:00
asan_blacklist.txt
…
asan_debugging.cc [asan] Add a new AddressDescription structure, which can describe any type of address. 2016-09-09 20:43:20 +00:00
asan_descriptions.cc [Sanitizers] ASan: detect new/delete calls with mismatched alignment. 2017-10-25 17:21:37 +00:00
asan_descriptions.h [Sanitizers] ASan: detect new/delete calls with mismatched alignment. 2017-10-25 17:21:37 +00:00
asan_errors.cc [sanitizer] Remove unused <signal.h> which conflicts with asan declarations 2017-11-10 03:18:53 +00:00
asan_errors.h [Sanitizers] ASan: detect new/delete calls with mismatched alignment. 2017-10-25 17:21:37 +00:00
asan_fake_stack.cc [asan] Complete the Fuchsia port 2017-08-09 00:21:45 +00:00
asan_fake_stack.h fix random typos [NFC] 2016-08-05 18:49:08 +00:00
asan_flags.cc [lsan] Add __lsan_default_options 2017-09-22 23:49:49 +00:00
asan_flags.h [Sanitizer] Change InitializeFlags() signatures. NFC. 2015-02-12 00:36:42 +00:00
asan_flags.inc [compiler-rt] Move dump_instruction_bytes and dump_registers into sanitizer_common 2017-09-13 06:24:59 +00:00
asan_fuchsia.cc (NFC) Rename GetMax{,User}VirtualAddress. 2017-11-07 23:51:22 +00:00
asan_globals.cc [asan] Unpoison global metadata on dlclose. 2017-09-28 13:38:58 +00:00
asan_globals_win.cc [sanitizer] Split dll_thunks into different sanitizers. 2017-02-02 23:01:28 +00:00
asan_init_version.h [asan] Use dynamic shadow on 32-bit Android. 2017-11-10 22:27:48 +00:00
asan_interceptors.cc [sanitizer] Move signal interceptors from asan to sanitizer_common 2017-09-16 07:16:29 +00:00
asan_interceptors.h [sanitizer] Remove unneeded forward declaration of real_sigaction 2017-11-10 04:00:58 +00:00
asan_interceptors_memintrinsics.cc [asan] Interceptors for Fuchsia 2017-08-02 07:59:30 +00:00
asan_interceptors_memintrinsics.h [asan] Move memcpy, memmove, memset code out of asan_interceptors.cc 2017-07-20 01:29:01 +00:00
asan_interface.inc [asan] Fix dead stripping of globals on Linux (compiler-rt). 2017-04-27 20:27:33 +00:00
asan_interface_internal.h [asan] Fix dead stripping of globals on Linux (compiler-rt). 2017-04-27 20:27:33 +00:00
asan_internal.h [asan] Refactor thread creation bookkeeping 2017-08-09 00:38:57 +00:00
asan_linux.cc [asan] Use dynamic shadow on 32-bit Android. 2017-11-10 22:27:48 +00:00
asan_lock.h
…
asan_mac.cc [asan] For iOS/AArch64, if the dynamic shadow doesn't fit, restrict the VM space 2017-07-12 23:29:21 +00:00
asan_malloc_linux.cc Try to appease compiler and break multiline comment. 2017-08-08 23:31:21 +00:00
asan_malloc_mac.cc [ASan] Retire mac_ignore_invalid_free, remove some dead code. 2015-12-04 16:17:55 +00:00
asan_malloc_win.cc Fix -Wstring-conversion instance 2017-03-15 19:50:02 +00:00
asan_mapping.h [asan] Use dynamic shadow on 32-bit Android. 2017-11-10 22:27:48 +00:00
asan_memory_profile.cc [Sanitizers] Add more details to ASan allocator stats report. 2017-10-13 18:38:10 +00:00
asan_new_delete.cc [Sanitizers] ASan: detect new/delete calls with mismatched alignment. 2017-10-25 17:21:37 +00:00
asan_poisoning.cc Release memory to OS only when the requested range covers the entire page 2016-11-30 20:41:59 +00:00
asan_poisoning.h [asan] Complete the Fuchsia port 2017-08-09 00:21:45 +00:00
asan_posix.cc [sanitizer] Remove unused <signal.h> which conflicts with asan declarations 2017-11-10 04:12:35 +00:00
asan_preinit.cc [asan] Revert r221882. 2014-11-14 13:02:28 +00:00
asan_premap_shadow.cc [asan] Use dynamic shadow on 32-bit Android. 2017-11-10 22:27:48 +00:00
asan_premap_shadow.h [asan] Use dynamic shadow on 32-bit Android. 2017-11-10 22:27:48 +00:00
asan_report.cc [Sanitizers] ASan: detect new/delete calls with mismatched alignment. 2017-10-25 17:21:37 +00:00
asan_report.h [Sanitizers] ASan: detect new/delete calls with mismatched alignment. 2017-10-25 17:21:37 +00:00
asan_rtl.cc (NFC) Rename GetMax{,User}VirtualAddress. 2017-11-07 23:51:22 +00:00
asan_scariness_score.h [asan] Add const into ScarinessScoreBase::Print 2017-09-14 03:06:20 +00:00
asan_shadow_setup.cc [asan] Fix the bug number in the error message. 2017-09-28 18:19:44 +00:00
asan_stack.cc [ASan] Allow to atomically modify malloc_context_size at runtime. 2014-12-16 01:23:03 +00:00
asan_stack.h [sanitizers] Rename GetStackTraceWithPcBpAndContext 2017-11-09 07:53:06 +00:00
asan_stats.cc [ASan] Clean up obsolete stats. 2015-06-26 19:18:02 +00:00
asan_stats.h [ASan] Clean up obsolete stats. 2015-06-26 19:18:02 +00:00
asan_suppressions.cc General definition for weak functions 2017-01-29 05:44:59 +00:00
asan_suppressions.h [asan] add suppressions for odr violations 2015-02-25 00:49:12 +00:00
asan_thread.cc [asan] Refactor thread creation bookkeeping 2017-08-09 00:38:57 +00:00
asan_thread.h [asan] Remove ScopedDeadlySignal 2017-09-18 06:56:57 +00:00
asan_win.cc [compiler-rt] Cleanup SignalContext initialization 2017-09-14 02:48:41 +00:00
asan_win_dll_thunk.cc Fix WinASan after moving wcslen interceptor to sanitizer_common 2017-06-29 17:15:53 +00:00
asan_win_dynamic_runtime_thunk.cc [sanitizer] Add dynamic_runtime_thunk for different sanitizers. 2017-02-02 23:01:41 +00:00
asan_win_weak_interception.cc [sanitizer] Use interception to access to strong definitions in the executable. 2017-02-02 23:02:11 +00:00
weak_symbols.txt Add lsan interceptors for libdispatch functions on darwin 2017-06-19 19:21:31 +00:00

README.txt 

AddressSanitizer RT
================================
This directory contains sources of the AddressSanitizer (ASan) runtime library.

Directory structure:
README.txt       : This file.
Makefile.mk      : File for make-based build.
CMakeLists.txt   : File for cmake-based build.
asan_*.{cc,h}    : Sources of the asan runtime library.
scripts/*        : Helper scripts.
tests/*          : ASan unit tests.

Also ASan runtime needs the following libraries:
lib/interception/      : Machinery used to intercept function calls.
lib/sanitizer_common/  : Code shared between various sanitizers.

ASan runtime currently also embeds part of LeakSanitizer runtime for
leak detection (lib/lsan/lsan_common.{cc,h}).

ASan runtime can only be built by CMake. You can run ASan tests
from the root of your CMake build tree:

make check-asan

For more instructions see:
https://github.com/google/sanitizers/wiki/AddressSanitizerHowToBuild