Fuchsia's _zx_port_wait no longer takes the count argument. This
change also updates all symbol uses to use the underscored versions.
Differential Revision: https://reviews.llvm.org/D47403
llvm-svn: 333328
LIT tests are used to test other cross-compiled architectures,
unit tests are only run on the host.
NFC now as currently only a single architecture is supported.
Differential Revision: https://reviews.llvm.org/D47286
llvm-svn: 333241
Summary:
rL325492 disables FPU features when using soft floating point
(-mfloat-abi=soft), which is used internally when building for armv7. This
causes errors with builtins that utililize VFP instructions. With this change
we first check if VFP is enabled (by checking if the preprocessor macro
__VFP_FP__ is defined) before including such builtins.
Reviewers: rengolin, samsonov, compnerd, smeenai, javed.absar, peter.smith
Reviewed By: peter.smith
Subscribers: peter.smith, mgorny, kristof.beyls, chrib, llvm-commits
Differential Revision: https://reviews.llvm.org/D47217
llvm-svn: 333216
<sys/ustat.h> has been removed from glibc 2.28 by:
commit cf2478d53ad7071e84c724a986b56fe17f4f4ca7
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Sun Mar 18 11:28:59 2018 +0800
Deprecate ustat syscall interface
This patch uses pre-computed size of struct ustat for Linux to fix
https://bugs.llvm.org/show_bug.cgi?id=37418
Patch by H.J. Lu.
Differential Revision: https://reviews.llvm.org/D47281
llvm-svn: 333213
Summary:
The most common usecase for -runs=0 is for generating code coverage
over some corpus. Coverage reports based on sancov are about to be deprecated,
which means some external coverage solution will be used, e.g. Clang source
based code coverage, which does not use any sancov instrumentations and thus
libFuzzer would consider any input to be not interesting in that case.
Reviewers: kcc
Reviewed By: kcc
Subscribers: alex, delcypher, #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D47271
llvm-svn: 333116
Summary:
`sanitizer_internal_defs.h` didn't have this define, which will be useful in
an upcoming CL.
Reviewers: alekseyshl
Reviewed By: alekseyshl
Subscribers: kubamracek, delcypher, llvm-commits, #sanitizers
Differential Revision: https://reviews.llvm.org/D47270
llvm-svn: 333109
Summary:
We need one library to support all of 39, 42 and 48 bit VMAs, and
there is no common address that works for all of them.
Reviewers: kcc, alekseyshl, javed.absar
Subscribers: rengolin, srhines, kubamracek, kristof.beyls, llvm-commits, cryptoad
Differential Revision: https://reviews.llvm.org/D47160
llvm-svn: 333025
On RTEMS, system and user code all live in a single binary and address
space. There is no clean separation, and instrumented code may
execute before the ASan run-time is initialized (or after it has been
destroyed).
Currently, GetCurrentThread() may crash if it's called before ASan
run-time is initialized. Make it return nullptr instead.
Similarly, fix __asan_handle_no_return so that it gives up rather than
try something that may crash.
Differential Revision: https://reviews.llvm.org/D46459
llvm-svn: 332888
Summary:
The static TLS vector for the main thread on NetBSD/i386 can be
unaligned in terms of the shadow granularity. Align the start of it with
Round Down and end of it with Round Up operations for the shadow
granularity shift.
Example static TLS vector ranges on NetBSD/i386:
tls_begin_=0xfbee7244 tls_end_=0xfbee726c.
ClearShadowForThreadStackAndTLS() is called from the Main Thread
bootstrap functions.
This change restores the NetBSD x86 32-bit (i386) support.
Sponsored by <The NetBSD Foundation>
Reviewers: vitalybuka, joerg
Reviewed By: vitalybuka
Subscribers: kubamracek, llvm-commits, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D46585
llvm-svn: 332792
Summary:
The changes allows building this file on NetBSD, mostly by
disabling the unsupported functions and adding OS-specific
system includes.
Sponsored by <The NetBSD Foundation>
Reviewers: joerg, kcc, vitalybuka
Reviewed By: vitalybuka
Subscribers: llvm-commits, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D46712
llvm-svn: 332791
Summary:
Floating point division by zero or even undef does not have undefined
behavior and may occur due to optimizations.
Fixes https://bugs.llvm.org/show_bug.cgi?id=37523.
Reviewers: kcc
Subscribers: hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D47085
llvm-svn: 332761
This is not needed after we've forked the Myriad version. Not to
mention it produces a compiler warning.
Differential Revision: https://reviews.llvm.org/D47054
llvm-svn: 332744
The Myriad RTEMS memory system has a few unique aspects that
require support in the ASan run-time.
- A limited amount of memory (currently 512M).
- No virtual memory, no memory protection.
- DRAM starts at address 0x80000000. Other parts of memory may be
used for MMIO, etc.
- The second highest address bit is the "cache" bit, and 0x80000000
and 0x84000000 alias to the same memory.
To support the above, we make the following changes:
- Use a ShadowScale of 5, to reduce shadow memory overhead.
- Adjust some existing macros to remove assumption that the lowest
memory address is 0.
- add a RawAddr macro that on Myriad strips the cache bit from the
input address, before using the address for shadow memory (for other
archs this does nothing).
- We must check that an address is in DRAM range before using it to
index into shadow memory.
Differential Revision: https://reviews.llvm.org/D46456
llvm-svn: 332690
This commit contains the trivial portion of the port of ASan to
Myriad RTEMS.
- Whitelist platform in sanitizer_platform.h, ubsan_platform.h
- Turn off general interception
- Use memset for FastPoisonShadow
- Define interception wrappers
- Set errno symbol correctly
- Enable ASAN_LOW_MEMORY
- Enable preinit array
- Disable slow unwinding
- Use fuchsia offline symbolizer
- Disable common code for: InitializeShadowMemory, CreateMainThread,
AsanThread::ThreadStart, StartReportDeadlySignal,
MaybeReportNonExecRegion.
Differential Revision: https://reviews.llvm.org/D46454
llvm-svn: 332681
This gives us something to insert into the shadow gap for systems that
don't have memory protection turned on there (i.e. on Myriad).
Differential Revision: https://reviews.llvm.org/D46457
llvm-svn: 332557
Summary:
It turns out that the previous code construct was not optimizing the allocation
and deallocation of batches. The class id was read as a class member (even
though a precomputed one) and nothing else was optimized. By changing the
construct this way, the compiler actually optimizes most of the allocation and
deallocation away to only work with a single class id, which not only saves some
CPU but also some code footprint.
Reviewers: alekseyshl, dvyukov
Reviewed By: dvyukov
Subscribers: dvyukov, delcypher, llvm-commits, #sanitizers
Differential Revision: https://reviews.llvm.org/D46961
llvm-svn: 332502
Summary:
For the 32-bit TransferBatch:
- `SetFromArray` callers have bounds `count`, so relax the `CHECK` to `DCHECK`;
- same for `Add`;
- mark `CopyToArray` as `const`;
For the 32-bit Primary:
- `{Dea,A}llocateBatch` are only called from places that check `class_id`,
relax the `CHECK` to `DCHECK`;
- same for `AllocateRegion`;
- remove `GetRegionBeginBySizeClass` that is not used;
- use a local variable for the random shuffle state, so that the compiler can
use a register instead of reading and writing to the `SizeClassInfo` at every
iteration;
For the 32-bit local cache:
- pass the count to drain instead of doing a `Min` everytime which is at times
superfluous.
Reviewers: alekseyshl
Reviewed By: alekseyshl
Subscribers: kubamracek, delcypher, #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D46657
llvm-svn: 332478
Summary:
For some reasons on Chromium when we start leak checking we get own pid as 1.
After that we see threads with PPID:0 assuming that thread is dead in infinite
loop.
To resolve particularly this case and possible issues like this, when IsAlive check failed to detect thread status, we need to limit the number of SuspendAllThreads
iterations.
Reviewers: eugenis
Subscribers: kubamracek, llvm-commits
Differential Revision: https://reviews.llvm.org/D46852
llvm-svn: 332319
Summary:
This is part of the larger XRay Profiling Mode effort.
This patch implements a central data structure for capturing statistics
about XRay instrumented function call stacks. The `FunctionCallTrie`
type does the following things:
* It keeps track of a shadow function call stack of XRay instrumented
functions as they are entered (function enter event) and as they are
exited (function exit event).
* When a function is entered, the shadow stack contains information
about the entry TSC, and updates the trie (or prefix tree)
representing the current function call stack. If we haven't
encountered this function call before, this creates a unique node for
the function in this position on the stack. We update the list of
callees of the parent function as well to reflect this newly found
path.
* When a function is exited, we compute statistics (TSC deltas,
function call count frequency) for the associated function(s) up the
stack as we unwind to find the matching entry event.
This builds upon the XRay `Allocator` and `Array` types in Part 1 of
this series of patches.
Depends on D45756.
Reviewers: echristo, pelikan, kpw
Reviewed By: kpw
Subscribers: llvm-commits, mgorny
Differential Revision: https://reviews.llvm.org/D45757
llvm-svn: 332313
Summary:
This change allows for handling the in-memory data associated with the
FDR mode implementation through the new `__xray_log_process_buffers`
API. With this change, we can now allow users to process the data
in-memory of the process instead of through writing files.
This for example allows users to stream the data of the FDR logging
implementation through network sockets, or through other mechanisms
instead of saving them to local files.
We introduce an FDR-specific flag, for "no_file_flush" which lets the
flushing logic skip opening/writing to files.
This option can be defaulted to `true` when building the compiler-rt
XRay runtime through the `XRAY_FDR_OPTIONS` preprocessor macro.
Reviewers: kpw, echristo, pelikan, eizan
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D46574
llvm-svn: 332208
Like Fuchsia, Myriad RTEMS uses an off-line symbolizer -- we just need
a custom backtrace frame string. Move this definition to
sanitizer_fuchsia.h; the corresponding RTEMS one will be added when we
add sanitizer_rtems.h.
Differential Revision: https://reviews.llvm.org/D46462
llvm-svn: 332157
In Windows version 1803, the first instruction of ntdll!strchr is:
8a01 mov al,byte ptr [rcx]
This is the only needed change for this version as far as I can tell.
Differential Revision: https://reviews.llvm.org/D46458
llvm-svn: 332095
This appears to be a copy/paste artifact from `AddrIsInHighMem`. It was caught by Firefox's jit-tests on Win64.
Differential Revision: https://reviews.llvm.org/D46291
llvm-svn: 332092
Summary:
This feature is required for proper libFuzzer support.
Adding SI_NETBSD to the list of OSes, fixes breakage in several
libFuzzer tests. It has been debugged with aid from kcc@.
Sponsored by <The NetBSD Foundation>
Reviewers: joerg, vitalybuka, kcc
Reviewed By: vitalybuka
Subscribers: kubamracek, llvm-commits, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D46729
llvm-svn: 332051
Vitaly Buka