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Author SHA1 Message Date
Kostya Serebryany
59a4a47a7b [asan] extend the blacklist functionality to handle global-init. Patch by Reid Watson 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163199 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 07:29:56 +00:00
Logan Chien
43bf70986b Rename ANDROIDEABI to Android. 
Most of the code guarded with ANDROIDEABI are not
ARM-specific, and having no relation with arm-eabi.
Thus, it will be more natural to call this
environment "Android" instead of "ANDROIDEABI".

Note: We are not using ANDROID because several projects
are using "-DANDROID" as the conditional compilation
flag.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163087 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-02 09:29:46 +00:00
Kostya Serebryany
b5b86d263a [asan/tsan] rename FunctionBlackList* to BlackList* as this class is not limited to functions any more 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162566 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-24 16:44:47 +00:00
Kostya Serebryany
9b9f87a87a [asan] add code to detect global initialization fiasco in C/C++. The sub-pass is off by default for now. Patch by Reid Watson. Note: this patch changes the interface between LLVM and compiler-rt parts of asan. The corresponding patch to compiler-rt will follow. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162268 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-21 08:24:25 +00:00
Kostya Serebryany
6e2d506dc9 [asan] implement --asan-always-slow-path, which is a part of the improvement to handle unaligned partially OOB accesses. See http://code.google.com/p/address-sanitizer/issues/detail?id=100 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161937 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-15 08:58:58 +00:00
Kostya Serebryany
ebd6454929 [asan] insert crash basic blocks inline as opposed to inserting them at the end of the function. This doesn't seem to fix or break anything, but is considered to be more friendly to downstream passes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161870 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-14 14:04:51 +00:00
Kostya Serebryany
11c2a47af8 [asan] remove the code for --asan-merge-callbacks as it appears to be a bad idea. (partly related to Bug 13225) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161757 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-13 14:08:46 +00:00
Kostya Serebryany
f7b08226eb [asan] make sure that the crash callbacks do not get merged (Chandler's idea: insert an empty InlineAsm). Change the order in which the new BBs are inserted: the slow path BB is insert between old BBs, the crash BB is inserted at the end. Don't create an empty BB (introduced by recent commits). Update the test. The experimental code that does manual crash callback merge will most likely be deleted later. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160544 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-20 09:54:50 +00:00
Kostya Serebryany
4f0c69623c [asan] more code to merge crash callbacks. Doesn't fully work yet, but allows to hold performance experiments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160361 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-17 11:04:12 +00:00
Kostya Serebryany
2735cf4aa5 [asan] a bit more refactoring, addressed some of the style comments from chandlerc, partially implemented crash callback merging (under flag) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160290 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-16 17:12:07 +00:00
Kostya Serebryany
c0ed3e548c [asan] refactor instrumentation to allow merging the crash callbacks (not fully implemented yet, no functionality change except the BB order) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160284 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-16 16:15:40 +00:00
Kostya Serebryany
9db5b5ffa9 [asan] initialize asan error callbacks in runOnModule instead of doing that on-demand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160269 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-16 14:09:42 +00:00
Chandler Carruth
349f14c72c Revert r160254 temporarily. 
It turns out that ASan relied on the at-the-end block insertion order to
(purely by happenstance) disable some LLVM optimizations, which in turn
start firing when the ordering is made more "normal". These
optimizations in turn merge many of the instrumentation reporting calls
which breaks the return address based error reporting in ASan.

We're looking at several different options for fixing this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160256 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-16 10:01:02 +00:00
Chandler Carruth
c3c8db9d25 Teach AddressSanitizer to create basic blocks in a more natural order. 
This is particularly useful to the backend code generators which try to
process things in the incoming function order.

Also, cleanup some uses of IRBuilder to be a bit simpler and more clear.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160254 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-16 08:58:53 +00:00
Kostya Serebryany
56139bc493 [asan] small code simplification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159522 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-02 11:42:29 +00:00
Chandler Carruth
06cb8ed006 Move llvm/Support/IRBuilder.h -> llvm/IRBuilder.h 
This was always part of the VMCore library out of necessity -- it deals
entirely in the IR. The .cpp file in fact was already part of the VMCore
library. This is just a mechanical move.

I've tried to go through and re-apply the coding standard's preferred
header sort, but at 40-ish files, I may have gotten some wrong. Please
let me know if so.

I'll be committing the corresponding updates to Clang and Polly, and
Duncan has DragonEgg.

Thanks to Bill and Eric for giving the green light for this bit of cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159421 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-29 12:38:19 +00:00
Kostya Serebryany
324cbb89f2 [asan] set a hard limit on the number of instructions instrumented pear each BB. This is (hopefully temporary) workaround for PR13225 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159344 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-28 09:34:41 +00:00
Hans Wennborg
ce718ff9f4 Extend the IL for selecting TLS models (PR9788) 
This allows the user/front-end to specify a model that is better
than what LLVM would choose by default. For example, a variable
might be declared as

  @x = thread_local(initialexec) global i32 42

if it will not be used in a shared library that is dlopen'ed.

If the specified model isn't supported by the target, or if LLVM can
make a better choice, a different model may be used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159077 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-23 11:37:03 +00:00
Kostya Serebryany
e6cf2e0bd0 [asan] instrument cmpxchg and atomicrmw 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157683 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-30 09:04:06 +00:00
Evgeniy Stepanov
06fdbaa914 Use zero-based shadow by default on Android. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157317 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-23 11:52:12 +00:00
Kostya Serebryany
3f119989c3 [asan] small optimization: do not emit "x+0" instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155701 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 10:04:53 +00:00
Alexander Potapenko
55cabae685 Fix issue 67 by checking that the interface functions weren't redefined in the compiled source file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155346 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-23 10:47:31 +00:00
Kostya Serebryany
208a4ff2b5 [asan] fix one more bug related to long double 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153189 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-21 15:28:50 +00:00
Kostya Serebryany
8c0134a776 [asan] don't emit __asan_mapping_offset/__asan_mapping_scale by default -- they are currently used only for experiments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153040 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-19 16:40:35 +00:00
Kostya Serebryany
a1c4504409 [asan] rename class BlackList to FunctionBlackList and move it into a separate file -- we will need the same functionality in ThreadSanitizer 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152753 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-14 23:22:10 +00:00
Evgeniy Stepanov
d8313be410 ASan: use getTypeAllocSize instead of getTypeStoreSize. 
This change replaces getTypeStoreSize with getTypeAllocSize in AddressSanitizer
instrumentation for stack allocations.

One case where old behaviour produced undesired results is an optimization in
InstCombine pass (PromoteCastOfAllocation), which can replace  alloca(T) with
alloca(S), where S has the same AllocSize, but a smaller StoreSize. Another
case is memcpy(long double => long double), where ASan will poison bytes 10-15
of a stack-allocated long double (StoreSize  10, AllocSize 16,
sizeof(long double) = 16).

See http://llvm.org/bugs/show_bug.cgi?id=12047 for more context.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151887 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-02 10:41:08 +00:00
Kostya Serebryany
95e3cf44a9 [asan] unpoison the stack before every noreturn call. Fixes asan issue 37. llvm part 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150102 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-08 21:36:17 +00:00
Craig Topper
858143816d Convert assert(0) to llvm_unreachable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149967 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-07 05:05:23 +00:00
Chris Lattner
18c7f80b3e reapply the patches reverted in r149470 that reenable ConstantDataArray, 
but with a critical fix to the SelectionDAG code that optimizes copies
from strings into immediate stores: the previous code was stopping reading
string data at the first nul.  Address this by adding a new argument to
llvm::getConstantStringInfo, preserving the behavior before the patch.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149800 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-05 02:29:43 +00:00
Argyrios Kyrtzidis
91766fe066 Revert Chris' commits up to r149348 that started causing VMCoreTests unit test to fail. 
These are:

r149348
r149351
r149352
r149354
r149356
r149357
r149361
r149362
r149364
r149365

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149470 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-01 04:51:17 +00:00
Chris Lattner
6a89228fac eliminate the "string" form of ConstantArray::get, using 
ConstantDataArray::getString instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149365 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-31 06:18:43 +00:00
Kostya Serebryany
a1a8a323f4 [asan] fix the ObjC support (asan Issue #33) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149300 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-30 23:50:10 +00:00
Alexander Potapenko
8375bc9236 Fix compilation of ASan tests on OS X Lion (see http://code.google.com/p/address-sanitizer/issues/detail?id=32) 
The redzones emitted by AddressSanitizer for CFString instances confuse the linker and are of little use, so we shouldn't add them. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149243 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-30 10:40:22 +00:00
Kostya Serebryany
f1639abf1a [asan] correctly use ConstantExpr::getGetElementPtr. Catch by NAKAMURA Takumi 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149172 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-28 04:27:16 +00:00
Kostya Serebryany
0307b9a885 [asan] enable asan only for the functions that have Attribute::AddressSafety 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148846 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-24 19:34:43 +00:00
Alexander Potapenko
2587804203 Implemented AddressSanitizer::getPassName() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148697 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-23 11:22:43 +00:00
Kostya Serebryany
bcb55ce386 [asan] extend the workaround for http://llvm.org/bugs/show_bug.cgi?id=11395: don't instrument the function at all on x86_32 if it has a large asm blob 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147953 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-11 18:15:23 +00:00
Kostya Serebryany
3c7faae346 [asan] cleanup: remove the SIGILL-related code (compiler part) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147667 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-06 18:09:21 +00:00
Kostya Serebryany
a4b2b1d8fb [asan] add the name of the module to the description of a global variable. This improves the readability of global-buffer-overflow reports. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146698 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-15 22:55:55 +00:00
Kostya Serebryany
7bcfc9950b [asan] fix a bug (issue 19) where dlclose and the following mmap caused a false positive. compiler part. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146688 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-15 21:59:03 +00:00
Kostya Serebryany
bd7910d158 [asan] remove .preinit_array from the compiler module (it breaks .so builds). This should be done in the run-time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146527 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-14 00:01:51 +00:00
Kostya Serebryany
085cb8f0b9 [asan] report an error if blacklist file contains a malformed regex. fixes asan issue 17 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146503 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-13 19:34:53 +00:00
Kostya Serebryany
9b02741d22 [asan] use .preinit_array only on linux 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146379 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-12 18:01:46 +00:00
Kostya Serebryany
25a8b809a0 [asan] call __asan_init from .preinit_array. This simplifies __asan_init vs malloc chicken-and-egg situation on Android and probably on other flavours of Linux. Patch by eugenis@google.com. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146284 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-09 22:09:32 +00:00
Kostya Serebryany
cc1d856d8e [asan] two minor fixes: use UnreachableInst after the neverreturn function call; use report_fatal_error when blacklist file can not be found 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145611 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-01 18:54:53 +00:00
Kostya Serebryany
d2703dec27 [asan] do not instrument threadlocal globals, this is buggy 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145092 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-23 02:10:54 +00:00
Kostya Serebryany
5a3a9c9371 [asan] workaround for reg alloc bug 11395: don't instrument functions with large chunks of inline assembler 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144962 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-18 01:41:06 +00:00
Kostya Serebryany
2e7fb2f736 quick fix: remove GlobalVariable::GlobalVariable mistakenly commited at r144933. For some reason this compiles on linux 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144936 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-17 23:37:53 +00:00
Kostya Serebryany
7cf2a04361 fall back to explicit list of allowed linkages when instrumenting globals in asan; add a test check that asan does not touch linkonce_odr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144933 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-17 23:14:59 +00:00
Kostya Serebryany
800e03f598 AddressSanitizer, first commit (compiler module only) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144758 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-16 01:35:23 +00:00