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Author SHA1 Message Date
Tim Northover 7449bda3d9 ARM: also remove useless .arm directive from other files 
llvm-svn: 200044
 2014-01-24 22:04:15 +00:00
Tim Northover 5386cae6b7 ARM: remove unnecessary .arm directive 
It was redundant (since ARM mode is the default) and misleading since
(e.g.) Cortex-A15 would not satisfy the #ifdef but would be in ARM
mode regardless.

llvm-svn: 200043
 2014-01-24 21:58:22 +00:00
Bob Wilson 1b39261990 Fix a typo "endi" -> "endif" in r200035. 
llvm-svn: 200039
 2014-01-24 21:04:05 +00:00
Joerg Sonnenberger 2fb149b901 Don't use .arm for ARMv7M, which will use the hwdiv path. Non-hwdiv 
remains ARM mode only, supporting thumb requires explicit it prefixes
for the predicted adds/subs and adjusting the offset computation for the
different block sizes.

llvm-svn: 200035
 2014-01-24 20:45:18 +00:00
Dmitry Vyukov 3ee32e7647 tsan: fix test for -O2 
otherwise races are suppressed due to "same stack"

llvm-svn: 200015
 2014-01-24 16:30:53 +00:00
Dmitry Vyukov 80240acd77 tsan: fix test for -O2 
llvm-svn: 200012
 2014-01-24 15:58:20 +00:00
Evgeniy Stepanov 9504304f2d [asan] Add an ASan-on-Android installation script. 
llvm-svn: 200009
 2014-01-24 15:24:24 +00:00
Joerg Sonnenberger db99eee490 Add end-of-function markers. 
llvm-svn: 200007
 2014-01-24 14:42:55 +00:00
Joerg Sonnenberger 2a10033ae7 Add end-of-function markers. 
llvm-svn: 200006
 2014-01-24 14:40:53 +00:00
Joerg Sonnenberger 171e9cfb0e Mechanically add end-of-function markers. 
llvm-svn: 200005
 2014-01-24 14:33:42 +00:00
Dmitry Vyukov 1b3862ab06 tsan: fix signal handling 
We left ignore_interceptors>0 when calling signal handlers
from blocking interceptors, this leads to missing synchronization in such signal handler.

llvm-svn: 200003
 2014-01-24 14:16:00 +00:00
Dmitry Vyukov 041510b290 tsan: fix test relying on assert 
llvm-svn: 200002
 2014-01-24 14:14:28 +00:00
Joerg Sonnenberger 59611a8b20 Provide support for ARMv4, lacking bx and clz. Unroll the 
test-and-subtract loop and compute the initial block as address,
shaving off between 5% and 10% on Cortex A9 and 30%+ a Raspberry Pi.
Code written by Matt Thomas and Joerg Sonnenberger.

Differential Revision: http://llvm-reviews.chandlerc.com/D2595

llvm-svn: 200001
 2014-01-24 13:43:35 +00:00
Joerg Sonnenberger 1f8cb3ee67 Implement __ARM_ARCH if the compiler lacks it. Add feature tests for bx and clz. 
llvm-svn: 199998
 2014-01-24 13:39:51 +00:00
Tim Northover 5a8af3e136 Darwin: add x86_64h slice for Haswell. 
llvm-svn: 199996
 2014-01-24 13:10:55 +00:00
Dmitry Vyukov 16e7a758b0 tsan: do not deadlock on fork 
Currently correct programs can deadlock after fork, because atomic operations and async-signal-safe calls are not async-signal-safe under tsan.
With this change:
- if a single-threaded program forks, the child continues running with verification enabled (the tsan background thread is recreated as well)
- if a multi-threaded program forks, then the child runs with verification disabled (memory accesses, atomic operations and interceptors are disabled); it's expected that it will exec soon anyway
- if the child tries to create more threads after multi-threaded fork, the program aborts with error message
- die_after_fork flag is added that allows to continue running, but all bets are off

http://llvm-reviews.chandlerc.com/D2614

llvm-svn: 199993
 2014-01-24 12:33:35 +00:00
Kostya Serebryany e402b431c0 [msan] add __libc_memalign interceptor; add a regression test for the existing bug with dtls support in msan 
llvm-svn: 199980
 2014-01-24 09:14:11 +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
Joerg Sonnenberger 25468a2ab4 Add end of function marker, which can be used on ELF to correctly set 
the function size.

llvm-svn: 199914
 2014-01-23 18:31:46 +00:00
Sergey Matveev 9b068a2c06 [lsan] Expand a comment to document our dynamic TLS hack. 
llvm-svn: 199900
 2014-01-23 15:10:35 +00:00
Alexey Samsonov 1d028b8a9f [Sanitizer] Fix false positive in snprintf interceptor - take the number of actually written symbols from real snprintf call. 
llvm-svn: 199899
 2014-01-23 15:09:38 +00:00
Alexey Samsonov 902bb51612 [Sanitizer] Fix false positive in printf interceptors: properly handle precision for %s 
llvm-svn: 199895
 2014-01-23 14:35:28 +00:00
Evgeniy Stepanov 20513c0937 [asan] More buffering in report printing. 
llvm-svn: 199888
 2014-01-23 11:51:03 +00:00
Evgeniy Stepanov 350fe4b1af [asan] Android logging. 
This change duplicates all ASan output to system log on Android.

llvm-svn: 199887
 2014-01-23 11:34:41 +00:00
Evgeniy Stepanov 6975704f62 [sanitizer] Replace inline with INLINE. 
llvm-svn: 199883
 2014-01-23 11:22:04 +00:00
Evgeniy Stepanov 04c5a836a2 [sanitizer] Add a sanity check. 
llvm-svn: 199880
 2014-01-23 11:01:07 +00:00
Evgeniy Stepanov 43d1888285 [sanitizer] Fix format string mismatches found by format attributes added in r199874. 
llvm-svn: 199879
 2014-01-23 10:57:08 +00:00
Evgeniy Stepanov 631bd92292 [asan] Print shadow memory and legend as a single printf call. 
llvm-svn: 199878
 2014-01-23 10:52:33 +00:00
Evgeniy Stepanov 4819d28e53 [asan] clang-format part of asan_report.cc 
llvm-svn: 199877
 2014-01-23 10:49:47 +00:00
Evgeniy Stepanov 29b7866c6c [sanitizer] Add printf format attributes. 
These were lost in a refactoring a long time ago.

llvm-svn: 199874
 2014-01-23 08:58:34 +00:00
Evgeniy Stepanov b1fa81047a [msan] Fix GCC warnings. 
warning: ISO C99 requires rest arguments to be used [enabled by default]
 INTERCEPTOR(char *, dlerror) {

warning: invoking macro INTERCEPTOR argument 3: empty macro arguments are undefined in ISO C90 and ISO C++98 [enabled by default]
llvm-svn: 199873
 2014-01-23 08:43:12 +00:00
Evgeniy Stepanov 1a9f5720d8 [asan] Enable replacement new/delete on Android. 
New/delete implementations in system libraries almost always are built without
frame pointers. As we switched to frame pointer based unwinder on ARM, they no
longer work for us, resulting in broken allocation/deallocation stacks.

Note that this does not work with statically linked
libstdc++/libc++/libstlport.

llvm-svn: 199872
 2014-01-23 08:14:20 +00:00
Dmitry Vyukov db1ad12ae2 asan: fix atomic operations on ARM 
implement correct atomic load/store for ARM
add test for atomic load/store
http://llvm-reviews.chandlerc.com/D2582

llvm-svn: 199802
 2014-01-22 14:13:37 +00:00
Alexey Samsonov 8c03475f01 [Sanitizer] try harder to fix Werror build break after r199729 
llvm-svn: 199736
 2014-01-21 13:06:38 +00:00
Alexey Samsonov 39dbd7cc2c [Sanitizer] Update file names now that we intercept both scanf and printf 
llvm-svn: 199735
 2014-01-21 13:01:20 +00:00
Tim Northover bea1cafde8 Macho-embedded: update build script for newer Clang behaviour. 
Clang now uses the *-apple-macho triples for embedded targets using MachO. The
environment makes less pretences to be running an actual Mach kernel with all
the support that would imply, so a few changes are needed to the build scripts:
    
+ The Apple way of detecting endianness applies in all cases so drop the
  __MACH__ test.
+ A quick rename since "darwin_embedded" no longer makes any sense. If there's
  no Mach going on, there's certainly no Darwin.
+ Change how we test for support for a platform. The functions we build don't
  need any SDK support (stdio.h, ...) so we don't need to check for it.

llvm-svn: 199731
 2014-01-21 12:38:02 +00:00
Alexey Samsonov 20494ca293 Fix unused function warning from r199729 
llvm-svn: 199730
 2014-01-21 12:16:19 +00:00
Alexey Samsonov 00cd273c46 Sanitize printf functions. 
Intercept and sanitize arguments passed to printf functions in ASan and TSan
(don't do this in MSan for now). The checks are controlled by runtime flag
(off by default for now).

Patch http://llvm-reviews.chandlerc.com/D2480 by Yuri Gribov!

llvm-svn: 199729
 2014-01-21 11:58:33 +00:00
Evgeniy Stepanov e676aadecf [asan] Enable frame pointer based unwinder on ARM. 
This code works with AAPCS-style {fp, lr} frames. Unlike linux perf, it does
not unwind through code compiled with -mapcs-frame (which Clang does not
support anyway).

llvm-svn: 199725
 2014-01-21 11:04:58 +00:00
Alexey Samsonov 0714b7b31b [Sanitizer] Support %.*s in internal printf implementation. Patch by Yuri Gribov. 
llvm-svn: 199724
 2014-01-21 10:59:44 +00:00
Kostya Serebryany 9fcb4c4a6e [asan] one more test for https://code.google.com/p/address-sanitizer/issues/detail?id=258 
llvm-svn: 199723
 2014-01-21 10:57:07 +00:00
Kostya Serebryany 4871067a55 [asan] relax the checks inside __sanitizer_annotate_contiguous_container: they are too optimistic due to https://code.google.com/p/address-sanitizer/issues/detail?id=258. 
llvm-svn: 199715
 2014-01-21 09:53:49 +00:00
Evgeniy Stepanov e98f9099a9 [msandr] Access app TLS directly in native exec mode. 
In optimized hybrid execution we do not use DynamoRIO private loader, which
mangles TLS access, so we can access the application's TLS directly.

Patch by Qin Zhao.

llvm-svn: 199655
 2014-01-20 13:09:29 +00:00
Nick Lewycky 62fd6778f5 Fix think-o from r199332 -- write to the new_filename we're building, not 
filename the global variable.

llvm-svn: 199572
 2014-01-19 07:37:29 +00:00
Kostya Serebryany 123994c4a6 [asan] use correct type when computing shadow address in allocator (caused SEGV when asan run-time is built with gcc 4.8.2 on 32-bit arch) 
llvm-svn: 199544
 2014-01-18 09:38:31 +00:00
Joerg Sonnenberger a9b3aee516 Support NetBSD/ARM. 
llvm-svn: 199492
 2014-01-17 14:06:22 +00:00
Kostya Serebryany 714c67c31e [asan] extend asan-coverage (still experimental). 
- add a mode for collecting per-block coverage (-asan-coverage=2).
   So far the implementation is naive (all blocks are instrumented),
   the performance overhead on top of asan could be as high as 30%.
 - Make sure the one-time calls to __sanitizer_cov are moved to function buttom,
   which in turn required to copy the original debug info into the call insn.

Here is the performance data on SPEC 2006
(train data, comparing asan with asan-coverage={0,1,2}):

                             asan+cov0     asan+cov1      diff 0-1    asan+cov2       diff 0-2      diff 1-2
       400.perlbench,        65.60,        65.80,         1.00,        76.20,         1.16,         1.16
           401.bzip2,        65.10,        65.50,         1.01,        75.90,         1.17,         1.16
             403.gcc,         1.64,         1.69,         1.03,         2.04,         1.24,         1.21
             429.mcf,        21.90,        22.60,         1.03,        23.20,         1.06,         1.03
           445.gobmk,       166.00,       169.00,         1.02,       205.00,         1.23,         1.21
           456.hmmer,        88.30,        87.90,         1.00,        91.00,         1.03,         1.04
           458.sjeng,       210.00,       222.00,         1.06,       258.00,         1.23,         1.16
      462.libquantum,         1.73,         1.75,         1.01,         2.11,         1.22,         1.21
         464.h264ref,       147.00,       152.00,         1.03,       160.00,         1.09,         1.05
         471.omnetpp,       115.00,       116.00,         1.01,       140.00,         1.22,         1.21
           473.astar,       133.00,       131.00,         0.98,       142.00,         1.07,         1.08
       483.xalancbmk,       118.00,       120.00,         1.02,       154.00,         1.31,         1.28
            433.milc,        19.80,        20.00,         1.01,        20.10,         1.02,         1.01
            444.namd,        16.20,        16.20,         1.00,        17.60,         1.09,         1.09
          447.dealII,        41.80,        42.20,         1.01,        43.50,         1.04,         1.03
          450.soplex,         7.51,         7.82,         1.04,         8.25,         1.10,         1.05
          453.povray,        14.00,        14.40,         1.03,        15.80,         1.13,         1.10
             470.lbm,        33.30,        34.10,         1.02,        34.10,         1.02,         1.00
         482.sphinx3,        12.40,        12.30,         0.99,        13.00,         1.05,         1.06

llvm-svn: 199488
 2014-01-17 11:00:30 +00:00
Evgeniy Stepanov 755fc5c313 [asan] Link runtime library with -lm -Wl,-z,defs to ensure that it declares all its dependencies. 
llvm-svn: 199483
 2014-01-17 09:38:46 +00:00
Alexey Samsonov a64851bccb [Sanitizer] Remove empty method 
llvm-svn: 199481
 2014-01-17 08:39:05 +00:00
Evgeniy Stepanov 877bb8ba59 [asan] Fix a build warning on windows. 
llvm-svn: 199390
 2014-01-16 14:21:17 +00:00