llvm-svn: 201404

These are runtime support functions for inline assembly instrumentation.

Patch by Yuri Gorshenin.

llvm-svn: 201402

This change adds a copy of <ucontext.h> for Android found in google-breakpad
that is missing from the official NDK.
ASan SEGV handler is still disabled by default and can be enabled with
ASAN_OPTIONS=handle_segv.

llvm-svn: 201084

llvm-svn: 200485

llvm-svn: 200474

[ASan] Reinstate ASAN_LOW_MEMORY, which has nothing to do with signal handling and thus should not be moved to common.

llvm-svn: 200319

This change is a part of refactoring intended to have common signal handling behavior in all tools.

llvm-svn: 200295

This change duplicates all ASan output to system log on Android.

llvm-svn: 199887

This change adds ASAN_OPTIONS=start_deactivated=1 flag. When present, ASan will
start in "deactivated" mode, with no heap poisoning, no quarantine, no stack
trace gathering, and minimal redzones. All this features come back when
__asan_init is called for the constructor of an instrumented library.

The primary use case for this feature is Android. Code itself is not
Android-specific, and this patch includes a Linux test for it.

llvm-svn: 199377

llvm-svn: 199370

llvm-svn: 194958

llvm-svn: 194696

llvm-svn: 194583

CMake changes to build the ASan runtime for the iOS simulator. This is a universal library targeting the same architectures as the OSX ASan runtime does, thus the iossim version can't live in the same universal libclang_rt.asan_osx_dynamic.dylib

The difference between the OSX and iossim builds is in the -mios-simulator-version-min and -ios_simulator_version_min flags that tell Clang to compile and link iossim code.

The iossim runtime can only be built on a machine with both Xcode and the iOS Simulator SDK installed. If xcodebuild -version -sdk iphonesimulator Path returns a nonempty path, it is used when compiling and linking the iossim runtime.

llvm-svn: 194199

This moves away from creating the symbolizer object and initializing the
external symbolizer as separate steps.  Those steps now always take place
together.

Sanitizers with a legacy requirement to specify their own symbolizer path
should use InitSymbolizer to initialize the symbolizer with the desired
path, and GetSymbolizer to access the symbolizer.  Sanitizers with no
such requirement (e.g. UBSan) can use GetOrInitSymbolizer with no need for
initialization.

The symbolizer interface has been made thread-safe (as far as I can
tell) by protecting its member functions with mutexes.

Finally, the symbolizer interface no longer relies on weak externals, the
introduction of which was probably a mistake on my part.

Differential Revision: http://llvm-reviews.chandlerc.com/D1985

llvm-svn: 193448

Differential Revision: http://llvm-reviews.chandlerc.com/D1339

llvm-svn: 193060

(1) instrumented, i.e. compiled and linked with -fsanitize=address
(2) not instrumented, compiled w/o -fsanitize=address and linked with ASan runtime statically.

llvm-svn: 190788

llvm-svn: 189454

This change adds a Python script that is invoked for
the just-built sanitizer runtime to generate the list of exported symbols
passed to the linker. By default, it contains interceptors and sanitizer
interface functions, but can be extended with tool-specific lists.

llvm-svn: 189356

This sets flags and excludes things that aren't working with MSVC yet,
allowing us to build the ASan runtime as part of the cmake build.

Differential Revision: http://llvm-reviews.chandlerc.com/D1525

llvm-svn: 189304

llvm-svn: 184639

llvm-svn: 183499

llvm-svn: 182470

llvm-svn: 182465

Also, define CAN_SANITIZE_LEAKS.

llvm-svn: 182383

llvm-svn: 182380

Introduce a new object library, RTSanitizerCommonLibc, which will contain
the subset of sanitizer_common with libc dependencies. RTSanitizerCommon
contains the remainder of sanitizer_common, and is intended to have no
libc dependencies. Begin moving code to RTSanitizerCommonLibc, starting
with sanitizer_common.cc, whose libc-dependent portion is moved to
sanitizer_common_libcdep.cc, the first member of the new library.

This split affects the CMake build only.  The makefile build continues
to produce the full sanitizer_common library.

llvm-svn: 182118

llvm-svn: 178758

specify which symbols are exported to DSOs when the sanitizer is statically
linked into a binary.

llvm-svn: 177784

[ASan] Switch ASan to generic ThreadRegistry from sanitizer_common. Delete ASan-specific AsanThreadRegistry.

llvm-svn: 177634

llvm-svn: 176940

llvm-svn: 175871

[ASan] Delete asan/dynamic dir and temporarily move the interposers declarations to asan_intercepted_functions.h
Now that we have only one dependency on asan_intercepted_functions.h, we can unite that code with the interceptors declarations in asan_interceptors.cc and get rid of asan_intercepted_functions.h

llvm-svn: 175631

Nuke lib/interception/mach_override.

llvm-svn: 174383

This CL drastically simplifies the way we're hooking the memory allocation routines in ASan on Mac by using dylib interposition to replace the main malloc_zone_* functions. This allows us to avoid replacing the default CFAllocator and drop the CF dependency at all.

Committing this patch will result in the static runtime being broken. A follow-up CL will switch ASan to use the dynamic runtime library.

llvm-svn: 173134

ASan: disable flexible mapping and offset on Android. It doesn't work for dynamic ASan runtime there

llvm-svn: 173132

CMake: generalize checking for target availability and add initial support for PowerPC native arch. With this patch, building LLVM on PowerPC native arch produces a working ASan runtime.

llvm-svn: 173044

ASan: use dynamic lookup when building dynamic ASan runtime on Mac, because shadow mapping and offset are defined in the instrumented modules instead of runtime

llvm-svn: 173015

ASan: build runtime library with ASAN_FLEXIBLE_MAPPING_AND_OFFSET=1 as shadow mapping/offset are always emitted by the LLVM backend now

llvm-svn: 173013

CMake: add functions creating universal runtime libraries for several architectures on OS X and use them in ASan and UBSan build rules

llvm-svn: 173011