41 Commits

Author SHA1 Message Date
Chandler Carruth
c42ddde78a The newest versions of CMake require outputs of custom commands be in
DEPENDS rather than SOURCES. The SOURCES just end up looking on the
filesystem and not finding anything. Makes for very hard to debug build
errors. =/

llvm-svn: 207722
2014-04-30 23:31:45 +00:00
Peter Collingbourne
16f2f18105 Add user-defined callback on write() calls.
Add dfsan_set_write_callback(), which sets a callback to be invoked when
a write() call is invoked within DFSan instrumented code.

Patch by Sam Kerner!

Differential Revision: http://reviews.llvm.org/D3268

llvm-svn: 207131
2014-04-24 17:42:16 +00:00
Alexey Samsonov
78a8435fd6 [CMake] Rename add_compiler_rt_static_runtime to add_compiler_rt_runtime.
Soon there will be an option to build compiler-rt parts as shared libraries
on Linux. Extracted from http://llvm-reviews.chandlerc.com/D3042
by Yuri Gribov.

llvm-svn: 205183
2014-03-31 13:45:36 +00:00
Peter Collingbourne
5d167dae7d Add function to get the number of DFSan labels allocated.
Expose the number of DFSan labels allocated by adding function dfsan_get_label_count().

Patch by Sam Kerner!

Differential Revision: http://llvm-reviews.chandlerc.com/D3109

llvm-svn: 204854
2014-03-26 21:09:53 +00:00
Alexander Potapenko
1296436cbf [libsanitizer] Introduce flag descriptions.
Extend ParseFlag to accept the |description| parameter, add dummy values for all existing flags.
As the flags are parsed their descriptions are stored in a global linked list.
The tool can later call __sanitizer::PrintFlagDescriptions() to dump all the flag names and their descriptions.
Add the 'help' flag and make ASan, TSan and MSan print the flags if 'help' is set to 1.

llvm-svn: 204339
2014-03-20 12:52:52 +00:00
Alexey Samsonov
32956d651a [CMake] Make append_if semantics similar to those used in LLVM
llvm-svn: 203773
2014-03-13 09:31:36 +00:00
Alexey Samsonov
98aa08c0e9 Update sanitizers' bash scripts.
* Fix bash scripts to work on FreeBSD (patch by Viktor Kutuzov)
* Update locations of lit tests in check_lint script.

llvm-svn: 202145
2014-02-25 12:09:25 +00:00
Alexey Samsonov
1181a104e6 [CMake] Rename several variables
llvm-svn: 201575
2014-02-18 14:28:53 +00:00
Alexey Samsonov
63a4af7346 [CMake] Add top-level target for each compiler-rt library, and add 'compiler-rt' target encompassing them all.
llvm-svn: 201556
2014-02-18 09:33:45 +00:00
Alexey Samsonov
878a9a5de2 [CMake] Check for -fPIE and -ffreestanding flags for consistency
llvm-svn: 201549
2014-02-18 08:07:09 +00:00
Alexey Samsonov
f6cf6ab53b Move DFSan test suite under test/
llvm-svn: 201403
2014-02-14 12:05:41 +00:00
Alexey Samsonov
81a2b466e9 Move shared configs for lit test suites to test/ and unittests/ directories
llvm-svn: 201399
2014-02-14 11:00:07 +00:00
Alexey Samsonov
c496eba75f Don't create check-ubsan and check-dfsan commands if they are not supported on this platform
llvm-svn: 199979
2014-01-24 08:06:21 +00:00
Evgeniy Stepanov
3a28dc7158 Fix -Werror compilation.
It was broken in r197601.

llvm-svn: 197665
2013-12-19 08:57:24 +00:00
Lorenzo Martignoni
f073541819 [DFSan] New custom wrappers
Added the following custom wrappers:
  strstr
  strrchr
  memchr
  nanosleep
  socketpair

Tweaked a couple of existing wrappers: if a wrapper returns a pointers derived
from an input pointer, then return the label of the input pointer

Sorted tests invocation

Differential Revision: D2354

llvm-svn: 197601
2013-12-18 19:25:34 +00:00
Lorenzo Martignoni
65550a5dd1 [DFSan] Extend the ABI list to discard new glibc functions
Differential Revision: http://llvm-reviews.chandlerc.com/D2291

llvm-svn: 196389
2013-12-04 16:53:10 +00:00
Lorenzo Martignoni
dc601d8f3a [DFSan] Change the way labels are propagated when comparing memory through libc functions.
Differential Revision: http://llvm-reviews.chandlerc.com/D2252

llvm-svn: 196388
2013-12-04 16:48:09 +00:00
Lorenzo Martignoni
085bf66e60 Added missing lib/dfsan/scripts/check_custom_wrappers.sh
llvm-svn: 195838
2013-11-27 11:50:44 +00:00
Lorenzo Martignoni
895454e1e4 Implement a bunch of custom glibc wrappers & corresponding tests
llvm-svn: 195749
2013-11-26 11:45:58 +00:00
Peter Collingbourne
4184a471f2 build-libc-list.py: Replace --{,usr,gcc}lib with flags for specific libraries.
This should allow us to cope with newer versions of GCC (and more esoteric
directory layouts).

llvm-svn: 195695
2013-11-25 23:50:05 +00:00
Peter Collingbourne
f09d5d03fd Revert r195381, "Implement a bunch of custom glibc wrappers & corresponding tests."
It broke a buildbot.

llvm-svn: 195392
2013-11-21 23:48:19 +00:00
Peter Collingbourne
0a14a71061 Implement a bunch of custom glibc wrappers & corresponding tests.
- Introduce several new custom glibc wrappers
- Implement some of the not yet implemented wrappers
- Refactor and extend the tests
- Add script to make sure all declare custom glibc wrappers are implemented & tested.

Patch by Lorenzo Martignoni!

Differential Revision: http://llvm-reviews.chandlerc.com/D2234

llvm-svn: 195381
2013-11-21 23:18:03 +00:00
Peter Collingbourne
01b337dc2d [dfsan] Tweaks for the ABI list
- Add a bunch of glibc functions to the ABI list
- Group similar functions in the ABI

Patch by Lorenzo Martignoni!

Differential Revision: http://llvm-reviews.chandlerc.com/D2185

llvm-svn: 195110
2013-11-19 06:33:13 +00:00
Alexey Samsonov
4985d5274a [DFSan] Don't include public headers in dfsan runtime code
Summary:
Definitions we use in public sanitizer headers may
slightly conflict with the ones we use in private sanitizer runtimes.
Moreover, we generally forbid to include any system headers (like <stdint.h>)
in sanitizer runtime headers. This leads to inevitable duplication of selected
interface function declarations, but we decided to live with it.

Reviewers: pcc

Reviewed By: pcc

CC: kcc, llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2179

llvm-svn: 194955
2013-11-17 09:41:47 +00:00
Peter Collingbourne
cdec0a8ad2 [dfsan] Add a few easy functions to the ABI list.
llvm-svn: 190653
2013-09-13 01:38:56 +00:00
Peter Collingbourne
0dca2e5ed1 [dfsan] Initial set of DFSAN_OPTIONS flags.
llvm-svn: 190379
2013-09-10 01:51:35 +00:00
Peter Collingbourne
014328e76c [dfsan] Add a syms file.
llvm-svn: 189620
2013-08-29 22:49:00 +00:00
Peter Collingbourne
187a169603 [dfsan] Add custom function for dl_iterate_phdr.
Differential Revision: http://llvm-reviews.chandlerc.com/D1505

llvm-svn: 189503
2013-08-28 20:18:25 +00:00
Peter Collingbourne
3e5524d6c5 [dfsan] Add custom function for pthread_create.
Differential Revision: http://llvm-reviews.chandlerc.com/D1504

llvm-svn: 189502
2013-08-28 20:18:22 +00:00
Peter Collingbourne
469c056299 [dfsan] Integration test for the equal-labels case
llvm-svn: 189134
2013-08-23 18:45:22 +00:00
Peter Collingbourne
12b0809eb1 [dfsan] Initial set of custom functions and interceptors for libc.
Differential Revision: http://llvm-reviews.chandlerc.com/D1397

llvm-svn: 188490
2013-08-15 21:18:53 +00:00
Peter Collingbourne
ae52ac7479 [dfsan] Runtime support for -dfsan-debug-nonzero-labels feature.
Reviewers: eugenis

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1406

llvm-svn: 188471
2013-08-15 18:51:07 +00:00
Peter Collingbourne
64308d92c0 [dfsan] New __dfsan_set_label runtime function.
Differential Revision: http://llvm-reviews.chandlerc.com/D1396

llvm-svn: 188411
2013-08-14 20:51:33 +00:00
Peter Collingbourne
0e51eda83b [dfsan] Runtime support for ABI list functionality; can now run integration tests with args ABI.
Differential Revision: http://llvm-reviews.chandlerc.com/D1351

llvm-svn: 188401
2013-08-14 18:54:06 +00:00
Peter Collingbourne
7da504faa4 [dfsan] Introduce dfsan_read_label runtime function.
Differential Revision: http://llvm-reviews.chandlerc.com/D1349

llvm-svn: 188319
2013-08-13 22:15:40 +00:00
Peter Collingbourne
da71ea2598 [dfsan] Remove the unused __dfsan_memcpy function.
Differential Revision: http://llvm-reviews.chandlerc.com/D1350

llvm-svn: 188238
2013-08-13 00:16:18 +00:00
Peter Collingbourne
a3dc875198 [dfsan] Begin a private header and move shadow_for there.
Differential Revision: http://llvm-reviews.chandlerc.com/D1348

llvm-svn: 188231
2013-08-12 23:51:33 +00:00
Peter Collingbourne
21b2929aca [dfsan] Introduce dfsan_union runtime function.
Differential Revision: http://llvm-reviews.chandlerc.com/D1347

llvm-svn: 188229
2013-08-12 23:47:37 +00:00
Daniel Dunbar
bc5dbc435e [tests] Update to use lit_config and lit package, as appropriate.
llvm-svn: 188116
2013-08-09 22:14:01 +00:00
Alexey Samsonov
f49c076ff7 Simplify (and fix) check-dfsan configs
llvm-svn: 187968
2013-08-08 08:26:39 +00:00
Peter Collingbourne
5cbab07d02 DataFlowSanitizer; compiler-rt changes.
DataFlowSanitizer is a generalised dynamic data flow analysis.

Unlike other Sanitizer tools, this tool is not designed to detect a
specific class of bugs on its own.  Instead, it provides a generic
dynamic data flow analysis framework to be used by clients to help
detect application-specific issues within their own code.

Differential Revision: http://llvm-reviews.chandlerc.com/D967

llvm-svn: 187924
2013-08-07 22:47:26 +00:00