This is Chromium's base/memory/scoped_ptr.h at r98718, which split off
from the google3 version at a later point than Breakpad's copy. It is a
drop in replacement and the only changes are:
- removal of WARN_UNUSED_RESULT.
- moving it into the google_breakpad namespace.
BUG=534
R=mark@chromium.org
Review URL: https://breakpad.appspot.com/964002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1265 4c0a9323-5329-0410-9bdc-e9ce6186880e
- src/common/android/testing/mkdtemp.h:
Fixes a compilation error when using the (recent) NDK r9b,
see comments in the source file for details.
- android/test-driver, Makefile.am, Makefile.in:
Autotools 1.12 changed the way tests are run during "make check"
so add a new "custom test driver" to run tests on Android, and
modify Makefile.am / Makefile.in accordingly. Otherwise,
'make check' tried to run the tests on the host.
- android/test-shell.sh:
Allow several tests to run in parallel on the device, by
creating a custom test directory for each test process.
This allows running "make check -j8" reliably.
- src/common/linux/file_id_unittest.cc:
Disable the SelfStrip test on Android, since it assumes a 'strip'
executable is available on the target system where the test runs.
BUG=NONE
R=mark@chromium.org, ted.mielczarek@gmail.com
TEST=android/run-checks.sh --ndk-dir=/path/to/android-ndk-r9b
Review URL: https://breakpad.appspot.com/904003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1259 4c0a9323-5329-0410-9bdc-e9ce6186880e
The inconsistent and duplicated references to gDebugLog caused
problems building on iOS and the current logging implementation
had little utility because it was never activated in debug builds.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1257 4c0a9323-5329-0410-9bdc-e9ce6186880e
Add a resetConfiguration method to BreakpadController for iOS. The new method
resets the controller configuration to its initial value, which is the
infoDictionary of the bundle of the application.
Patch by KiYun Roe <kiyun@chromium.org>
BUG=554
Review URL: https://breakpad.appspot.com/904002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1256 4c0a9323-5329-0410-9bdc-e9ce6186880e
There are a bunch of tests that use invalid memory acesses (on purpose)
to trigger a crash so that we can detect things are dumped correctly.
When we run under ASAN, it catches those accesses and the breaks the
testing flow.
For now, use the existing ADDRESS_SANITIZER symbol to disable more tests.
Ideally we'd use a compile-time attribute to disable ASAN on a few funcs,
but that seems to be broken atm.
BUG=chromium:293519
BUG=chromium:304575
TEST=ran unittests under ASAN and they now pass
TEST=ran unittests w/out asan/clang and they still pass
R=benchan@chromium.org
Review URL: https://breakpad.appspot.com/884002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1255 4c0a9323-5329-0410-9bdc-e9ce6186880e
If you try to process a file using a 32bit build that is larger than
2GiB in size, the linux kernel will reject things:
$ strace -eopen dump_syms ./chrome ./ > chrome.sym
...
open(".//chrome.debug", O_RDONLY) = -1 EOVERFLOW (Value too large for defined data type)
So let's use the existing autoconf macro to check for and enable support
as need be.
We have to shift the existing m32 logic up to before we start doing
feature test macros though otherwise a simple configure won't work:
$ ./configure --enable-m32
This is because it first tests LFS and such w/out the -m32 flags.
BUG=chromium:266064
TEST=`./configure --enable-m32 && make && make check` passes
R=benchan@chromium.org
Review URL: https://breakpad.appspot.com/619002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1250 4c0a9323-5329-0410-9bdc-e9ce6186880e
For CPUs that don't support the MMX instruction set, such pre-Pentium III or industrial x86 embedded PCs, the minidump fails when it tries to retrieve MMX specific registers.
This patch adds MMX detection for that call.
Tested on Ubuntu 12.04 with i686, and on a custom Linux distro on a Vortex86DX microcontroller.
Original review: https://breakpad.appspot.com/455002/
A=aras.vaichas
BUG=495
Review URL: https://breakpad.appspot.com/864002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1248 4c0a9323-5329-0410-9bdc-e9ce6186880e
It is incorrect to wrap close in HANDLE_EINTR on Linux.
Unnecessary #includes of eintr_wrapper.h are also removed. The variable naming
within the macro is also updated per Chromium r178174.
einter_wrapper.h contains a non-mechanical change. Mechanical changes were
generated by running:
sed -E -i '' \
-e 's/((=|if|return|CHECK|EXPECT|ASSERT).*)HANDLE(_EINTR\(.*close)/\1IGNORE\3/' \
-e 's/(ignore_result|void ?)\(HANDLE_EINTR\((.*close\(.*)\)\)/\2/' \
-e 's/(\(void\) ?)?HANDLE_EINTR\((.*close\(.*)\)/\2/' \
$(grep -rl HANDLE_EINTR.*close . --exclude-dir=.svn)
sed -E -i '' -e '/#include.*eintr_wrapper\.h"/d' \
$(grep -EL '(HANDLE|IGNORE)_EINTR' \
$(grep -Elr '#include.*eintr_wrapper\.h"' . --exclude-dir=.svn))
BUG=chromium:269623
R=ted.mielczarek@gmail.com
Review URL: https://breakpad.appspot.com/784002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1239 4c0a9323-5329-0410-9bdc-e9ce6186880e
The std::string dumpFilename already contains the full pathname to the dump file. Appending it to the dumpDirAsNSString creates a string with the path portion duplicated, e.g.:
/var/mobile/Applications/516BE756-DFD4-4F9B-85D5-85966B0038F7/Library/Caches/Breakpad/var/mobile/Applications/516BE756-DFD4-4F9B-85D5-85966B0038F7/Library/Caches/Breakpad/0A406D28-437D-48EE-9989-23F7F871818E.dmp
Instead of this:
/var/mobile/Applications/516BE756-DFD4-4F9B-85D5-85966B0038F7/Library/Caches/Breakpad/0A406D28-437D-48EE-9989-23F7F871818E.dmp
R=markus@chromium.org, qsr@chromium.org
Review URL: https://breakpad.appspot.com/744002
Patch from Akiva <scirsw@gmail.com>.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1237 4c0a9323-5329-0410-9bdc-e9ce6186880e
Adds an ARM64-specific definition of MDRawContext and support for writing out a
minidump when running on ARM64. Additionally, extends the iOS minidump generator
for NSExceptions to work on ARM64 as well as ARM.
Patch by Colin Blundell <blundell@chromium.org>
BUG=542
Review URL: https://breakpad.appspot.com/664002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1235 4c0a9323-5329-0410-9bdc-e9ce6186880e
SIGABRT can be generated internally, usually by calling abort(),
or externally by another process. When the signal is generated
by the kernel, info->si_pid is 0 and the signal is treated in the
same way as an exception (SIGSEGV, etc.), but the assumption
that the exception happens again upon return from the handler
is wrong, so we must have a special case for this.
Original CL: https://breakpad.appspot.com/734002/
BUG=chromium:303075
TEST=tested with Alt-VolumeUp-X on Chrome OS
A=semenzato@chromium.orgR=semenzato@google.com
Review URL: https://breakpad.appspot.com/754002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1233 4c0a9323-5329-0410-9bdc-e9ce6186880e
.raSearchStart in the cases where there are alignment operators in
the program string.
If alignment operators are found in the program string, the current
value of %ebp must be valid and it is the only reliable data point
that can be used for getting to the previous frame. Previously, the
.raSearchStart calculation was based on %esp and when %esp is aligned
in the current frame (which is a lossy operation) the resulting
.raSearchStart cannot was incorrect. There is code that is trying to
work around this problem (scanning of up to 3 words for a return
address) which is unreliable and it doesn't work in many cases (e.g.
when the alignment is on a 64-byte boundary).
This fix is already deployed in Google and it was measured to reduce
the number of wrong stack traces (for Windows crashes) by 45%. No
regressions have been found so far.
Here is an example of an issue that was fixed by this change (where
register %esp is aligned on the 64-byte boundary and the workarounds
that we already had didn't work):
https://code.google.com/p/chromium/issues/detail?id=311359
0:013> uf chrome_59630000!base::MessagePumpForIO::DoRunLoop
518 59685c39 55 push ebp
518 59685c3a 8bec mov ebp,esp
518 59685c3c 83e4c0 and esp,0FFFFFFC0h <== 64-byte boundary
518 59685c3f 83ec34 sub esp,34h
518 59685c42 53 push ebx
518 59685c43 56 push esi
Program string contains 64-byte alignment:
$T1 .raSearch = $T0 $T1 4 - 64 @ = $ebp $T1 4 - ^ = $eip $T1 ^ =
$esp $T1 4 + = $20 $T0 56 - ^ = $23 $T0 60 - ^ = $24 $T0 64 - ^ =
Review URL: https://breakpad.appspot.com/694002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1232 4c0a9323-5329-0410-9bdc-e9ce6186880e
Apparently, as of the 10.8 SDK, Apple has quietly decided that the first
argument to NSLocalizedString is supposed to be usable as-is as a format
string, instead of simply being the key to obtain a usable format string.
The recent clang trunk enforces this, resulting in build breaks like
crash_report_sender.m:560:14: error: data argument not used by format string [-Werror,-Wformat-extra-args]
displayName];
^
Breaking the result of NSLocalizedString into a temporary NSString* is enough
to suppress the warning.
BUG=chromium:314109
R=thakis@chromium.org
Review URL: https://breakpad.appspot.com/674003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1230 4c0a9323-5329-0410-9bdc-e9ce6186880e
In my testing, ARM V8 object files and ARM V8 slices of universal binaries do
not contain debug_frame sections (at least at this time), and hence dump_syms
does not output CFI for ARM V8 even in the absence of the "-c" flag.
Patch by:blundell@chromium.org
BUG=542
R=qsr@chromium.org
Review URL: https://breakpad.appspot.com/642002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1222 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch fixes the build for Android on MIPS when
using the latest official Android NDK (r9):
- Update src/common/android/include/elf.h to add a missing
definition for SHT_MIPS_DWARF.
- Add src/common/android/include/sgidefs.h required by LSS
when compiling for MIPS.
- Update android/run-checks.sh to work properly with
the --abi=mips option. All tests were passed succesfully
with an emulator system image running Android 4.2.
- Update other Android-specific files.
R=Petar.Jovanovic@imgtec.com, mark@chromium.org
Review URL: https://breakpad.appspot.com/633002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1216 4c0a9323-5329-0410-9bdc-e9ce6186880e
Here is the symbol parser output:
E0906 11:27:06.051507 22535 basic_source_line_resolver.cc:76] Line 380187: ParseLine failed
E0906 11:27:06.051614 22535 basic_source_line_resolver.cc:76] Line 380188: ParseLine failed
E0906 11:27:06.051648 22535 basic_source_line_resolver.cc:76] Line 380190: ParseLine failed
E0906 11:27:06.051679 22535 basic_source_line_resolver.cc:76] Line 380191: ParseLine failed
E0906 11:27:06.200814 22535 basic_source_line_resolver.cc:76] Line 446729: ParseLine failed
Here are the contents of the Breakpad symbol file:
FUNC 440d60 49 0 __copy_helper_block_
440d60 b 0 3160 <<<----------- the third number is the line number
440d6b 3e 0 3160 <<<---------------------------- same here
FUNC 440db0 36 0 __destroy_helper_block_
440db0 a 0 3160 <<<---------------------------- same here
440dba 2c 0 3160 <<<---------------------------- same here
Review URL: https://breakpad.appspot.com/629002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1214 4c0a9323-5329-0410-9bdc-e9ce6186880e
Tested with a minidump containing a version 3 structure to validate the string conversion routines. Interestingly enough the time_zone names does not appear to be abbreviation as the documentation was suggesting but full names, e.g. Eastern Standard Time:
MDRawMiscInfo
size_of_info = 232
flags1 = 0xf7
process_id = 0x54c4
process_create_time = 0x51a9323c
process_user_time = 0x1
process_kernel_time = 0x0
processor_max_mhz = 3100
processor_current_mhz = 1891
processor_mhz_limit = 3100
processor_max_idle_state = 0x1
processor_current_idle_state = 0x1
The new fileds follow:
process_integrity_level = 0x1000
process_execute_flags = 0x4d
protected_process = 0
time_zone_id = 2
time_zone.bias = 300
time_zone.standard_name = Eastern Standard Time
time_zone.daylight_name = Eastern Daylight Time
Review URL: https://breakpad.appspot.com/617002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1204 4c0a9323-5329-0410-9bdc-e9ce6186880e
More specifically:
- Detect corrupt symbols during minidump processing and provide the list of modules with corrupt symbols in the ProcessState. This will allow listing the corrupt symbol files in the final crash report.
- Skip and recover from symbol data parse errors - don't give up until 100 parse errors are seen.
- In order to recover from '\0' (null terminator) in the middle of a symbol file, a couple of methods have to be updated to require both buffer pointer and length. Previously they required only a buffer pointer (char *) and the size of the buffer was evaluated using strlen which is not reliable when the data is corrupt. Most of the changes are due to these signature updates.
- Added and updated unittests.
Also, updated minidump_stackwalk to show a WARNING for corrupt symbols. Output looks like this:
...
Loaded modules:
0x000da000 - 0x000dafff Google Chrome Canary ??? (main)
0x000e0000 - 0x0417dfff Google Chrome Framework 0.1500.0.3 (WARNING: Corrupt symbols, Google Chrome Framework, 4682A6B4136436C4BFECEB62D498020E0)
0x044a8000 - 0x04571fff IOBluetooth 0.1.0.0
...
Review URL: https://breakpad.appspot.com/613002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1200 4c0a9323-5329-0410-9bdc-e9ce6186880e
../../breakpad/src/processor/tokenize.cc:65:7: error: logical not is only applied to the left hand side of this comparison [-Werror,-Wlogical-not-parentheses]
if (!remaining > 0) {
^ ~
../../breakpad/src/processor/tokenize.cc:65:7: note: add parentheses after the '!' to evaluate the comparison first
if (!remaining > 0) {
^
( )
../../breakpad/src/processor/tokenize.cc:65:7: note: add parentheses around left hand side expression to silence this warning
if (!remaining > 0) {
^
( )
R=thakis@chromium.org
Review URL: https://breakpad.appspot.com/608002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1196 4c0a9323-5329-0410-9bdc-e9ce6186880e
Since explanatoryDialogText returns something that migth be user input, this
looks like a good change anyhow.
../../breakpad/src/client/mac/sender/crash_report_sender.m:269:38:
error: format string is not a string literal (potentially insecure)
[-Werror,-Wformat-security]
[self explanatoryDialogText],
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
Patch by Nico Weber <thakis@chromium.org>
Review URL: https://breakpad.appspot.com/607002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1195 4c0a9323-5329-0410-9bdc-e9ce6186880e
doesn't see the correct thread stack memory. Instead, it loads garbage
(from offset 0 of the minidump file - well that's not garbage, but it is
not the stack memory region either) and attempts to walk it. A typical
symptom of this issue is when you get a single stack frame after
processing - the context frame - for which you don't need stack memory.
This issue is caused by an invalid RVA in the memory descriptor stored
inside the MINIDUMP_THREAD structure for the thread. Luckily, the
invalid RVA is 0, and the start_of_memory_region appears to be correct,
so this issue can be easily detected and the correct memory region can be
loaded using an RVA specified in the MinidumpMemoryList.
I couldn't find a reasonable description on MSDN regarding
MINIDUMP_MEMORY_DESCRIPTOR.MINIDUMP_LOCATION_DESCRIPTOR having RVA of 0
except maybe for full dumps where the 64-bit version of the structure
(MINIDUMP_MEMORY_DESCRIPTOR64) is used and it has no RVA at all. It has
a 64-bit DataSize which if interpreted as the 32-bit structure will very
likely result in 0 for the RVA:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms680384(v=vs.85).aspx
Anyways, the dump that I looked at was not a full dump so 0 for RVA is a
bit puzzling (at least easily detectable):
...
Microsoft (R) Windows Debugger Version 6.2.9200.20512 X86
Copyright (c) Microsoft Corporation. All rights reserved.
...
User Mini Dump File: Only registers, stack and portions of memory are available
...
MINIDUMP_HEADER:
Version A793 (62F0)
NumberOfStreams 11
Flags 160
0020 MiniDumpWithUnloadedModules
0040 MiniDumpWithIndirectlyReferencedMemory
0100 MiniDumpWithProcessThreadData
Review URL: https://breakpad.appspot.com/606002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1194 4c0a9323-5329-0410-9bdc-e9ce6186880e
This is achieved by:
1. Extending the span of the scan for return address in the conext frame. Initially, I wanted to extend the span of the scan for all frames but then I noticed that there is code for ARM already that is extending the search only for the context frame. This kind of makes sense so I decided to reuse the same idea everywhere.
2. Attempting to restore the EBP chain after a successful scan for return address so that the stackwalker can switch back to FRAME_TRUST_CFI for the rest of the frames when possible.
I also fixed the lint errors in the files touched.
Review URL: https://breakpad.appspot.com/605002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1193 4c0a9323-5329-0410-9bdc-e9ce6186880e
There's a bug in the new allocator<T> implementation used by wasteful_vector. It inherits the base class' implementation of allocator and doesn't implement allocate() so it goes to the heap instead of the PageAllocator -- the very thing wasteful_vector was trying to avoid! As a side effect it was also leaking heap memory.
Thanks,
-Ivan
Review URL: https://breakpad.appspot.com/599002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1188 4c0a9323-5329-0410-9bdc-e9ce6186880e
NaCl executables have ELF program headers that look like this (for the
original NaCl x86 GCC toolchain):
Program Header:
LOAD off 0x00010000 vaddr 0x00020000 paddr 0x00020000 align 2**16
filesz 0x00017ce0 memsz 0x00017ce0 flags r-x
LOAD off 0x00030000 vaddr 0x10020000 paddr 0x10020000 align 2**16
filesz 0x00001c98 memsz 0x00001c98 flags r--
LOAD off 0x00040000 vaddr 0x10030000 paddr 0x10030000 align 2**16
filesz 0x000025ec memsz 0x00002b88 flags rw-
or this (for the newer NaCl ARM GCC toolchain):
Program Header:
LOAD off 0x00010000 vaddr 0x00020000 paddr 0x00020000 align 2**16
filesz 0x000193b0 memsz 0x000193b0 flags r-x
LOAD off 0x00000000 vaddr 0x10020000 paddr 0x10020000 align 2**16
filesz 0x00000978 memsz 0x00000978 flags r--
LOAD off 0x00001000 vaddr 0x10031000 paddr 0x10031000 align 2**16
filesz 0x00000abc memsz 0x00000fac flags rw-
Fix GetLoadingAddress() to return the start address of the first
segment, 0x20000, in these cases. Looking at p_offset for this isn't
correct, and the first segment doesn't have p_offset == 0 here because
NaCl can't map the ELF file headers as part of the first segment
(which is for validatable code only).
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3424
TEST= check addresses in output of "dump_syms" when run on NaCl nexe
Patch by Mark Seaborn <mseaborn@chromium.org>
Review URL: https://breakpad.appspot.com/588002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1170 4c0a9323-5329-0410-9bdc-e9ce6186880e
This CL adds new utilities to common/windows for handling OMAP information in
PDB files. It then augments PdbSourceLineWriter with explicit OMAP knowledge so
that symbolization will proceed more cleanly for images whose PDB files contain
OMAP information. This makes breakpad handle OMAPped symbol files as cleanly as
WinDbg.
Review URL: https://breakpad.appspot.com/570002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1167 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch improves several things for Linux/ARM:
- Better detection of the number of CPUs on the target
device. The content of /proc/cpuinfo only matches the
number of "online" CPUs, which varies over time with
recent Android devices.
- Reconstruct the CPUID and ELF hwcaps values from
/proc/cpuinfo, this is useful to better identify
target devices in minidumps.
- Make minidump_dump display the new information
in useful ways.
- Write a small helper class to parse /proc/cpuinfo
and also use it for x86/64.
- Write a small helper class to parse sysfds cpu lists.
- Add a my_memchr() implementation.
- Add unit tests.
Tested on a Nexus S (1 CPU), Galaxy Nexus (2 CPUs)
and a Nexus 4 (4 CPUs).
Review URL: https://breakpad.appspot.com/540003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1160 4c0a9323-5329-0410-9bdc-e9ce6186880e
structured logging. This is basically wrapping std::ostream within a new type.
No functional differences from this change are expected.
Patch by Ivan Penkov <ivan.penkov@gmail.com>
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1140 4c0a9323-5329-0410-9bdc-e9ce6186880e
Three unit tests were failing on recent ARM devices (e.g. Galaxy Nexus
or Nexus 4), while ran properly on older ones (e.g. Nexus S).
The main issue is that the instruction cache needs to be explicitely
cleared on ARM after writing machine code bytes to a malloc()-ed
page with PROT_EXEC.
Review URL: https://breakpad.appspot.com/540002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1132 4c0a9323-5329-0410-9bdc-e9ce6186880e
If the stack sizes for threads in the MinidumpSizeLimit test are too big,
then subtracting 64KB from the normal minidump file size is not enough to
trigger the size-limiting logic. Instead of basing the arbitrary limit off
of the normal file size, make it relative to the 8KB stack size the logic
assumes.
BUG=google-breakpad:510
TEST=Ran unittests
Review URL: https://breakpad.appspot.com/504002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1090 4c0a9323-5329-0410-9bdc-e9ce6186880e
When there are upwards of 200 threads in a crashing process, each having an
8KB stack, this can result in a huge, 1.8MB minidump file. So I added a
parameter that, if set, can compel the minidump writer to dump less stack.
More specifically, if the writer expects to go over the limit (due to the
number of threads), then it will dump less of a thread's stack after the
first 20 threads.
There are two ways to specify the limit, depending on how you write minidumps:
1) If you call WriteMinidump() directly, there's now a version of the
function that takes the minidump size limit as an argument.
2) If you use the ExceptionHandler class, the MinidumpDescriptor object you
pass to it now has a set_size_limit() method you would call before
passing it to the constructor.
BUG=chromium-os:31447, chromium:154546
TEST=Wrote a size-limit unittest; Ran unittests
Review URL: https://breakpad.appspot.com/487002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1082 4c0a9323-5329-0410-9bdc-e9ce6186880e
Breakpad can be used on processes where a mistaken
library saves then restores one of our signal handlers
with 'signal' instead of 'sigaction'.
This loses the SA_SIGINFO flag associated with the
Breakpad handler, and in some cases (e.g. Android/ARM
kernels), the values of the 'info' and 'uc' parameters
that ExceptionHandler::SignalHandler() receives will
be completely bogus, leading to a crash when the function
is executed (and of course, no minidump generation).
To work-around this, have SignalHandler() check the state
of the flag. If it is incorrectly unset, re-register with
'sigaction' and the correct flag, then return. The signal
will be re-thrown, and this time the function will be
called with the correct values.
Review URL: https://breakpad.appspot.com/481002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1067 4c0a9323-5329-0410-9bdc-e9ce6186880e
- One of the unit test binaries refused to link due to
missing linker flags.
- The WriteDSODebug() function now works on Android, so
do not special-case it anymore.
- Ensure android/run-checks.sh will complain properly if
the client unit test suite fails on Android. It used to
consider that such failures were acceptable. Note that
it still considers failures when running the tools and
processor test suite on the device normal (fixing this
is a lot harder, and these parts of Breakpad typically
never run on a device, but on the host).
Review URL: https://breakpad.appspot.com/482002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1066 4c0a9323-5329-0410-9bdc-e9ce6186880e
Currently, if a thread's stack pointer is not within a valid memory page,
the minidump writing will fail with an error. This change allows an invalid
stack pointer by simply setting the memory size to zero in the minidump.
The processing code already checks for the size being zero, although it
currently just gives an error (see https://breakpad.appspot.com/413002/).
BUG=google-breakpad:499, chromium-os:34880
TEST=make check, manually ran minidump-2-core and core2md
Review URL: https://breakpad.appspot.com/478002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1065 4c0a9323-5329-0410-9bdc-e9ce6186880e
to add it to the specifications table. Record the fully-qualified name
provided by the demangler in the table.
A=Rafael Ávila de Espíndola <respindola@mozilla.com> R=jimb at https://breakpad.appspot.
com/478004/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1062 4c0a9323-5329-0410-9bdc-e9ce6186880e
NXGetArchInfoXXX depends on the OS knowledge of architecture. This CL adds a
custom implementation of those methods to be able to handle newer CPU before
they are handled by the OS. It also add handling for armv7s architecture.
Review URL: https://breakpad.appspot.com/475002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1057 4c0a9323-5329-0410-9bdc-e9ce6186880e
next_offset is unsigned, comparing it >= 0 is always true. Instead,
compare the numbers whose difference makes next_offset.
Patch by Richard Trieu.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1040 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch updates README.ANDROID, since the client library
now supports directly generating a minidump without raising
a signal, and that it builds and runs fine on Android/x86.
+ Formatting fixes in minidump_writer_unittest.cc
Review URL: https://breakpad.appspot.com/446002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1026 4c0a9323-5329-0410-9bdc-e9ce6186880e
If none of the installed ExceptionHandlers handle a signal (their
FilterCallbacks or HandlerCallbacks all return false), then the signal
should be delivered to the signal handlers that were previously
installed.
This requires that old_handlers_ become a static vector so that we can
restore the handlers in the static HandleSignal.
Currently it is also restoring signals in ~ExceptionHandler (if there
are no others). This should not be required since our documentation
states that a process can only have one ExceptionHandler for which
install_handlers is true (and so we get the correct behavior if we
simply leave our handlers installed forever), but even the tests
themselves violate that.
Patch by Chris Hopman <cjhopman@chromium.org>
Review URL: https://breakpad.appspot.com/440002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1025 4c0a9323-5329-0410-9bdc-e9ce6186880e
This adds a minimalistic implementation of getcontext()
for Android/ARM and Android/x86. The provided code is
in assembly and only implements the bare minimum required
by Breakpad to get the current processor state.
Note that:
- The FPU state is not saved to the ucontext_t on ARM.
(that's actually the main difference with a normal
getcontext() implementation).
This is normal. On Linux/ARM, such state must be
obtained with PTRACE_GETVFPREGS instead. This will
be implemented in a future patch.
- On x86, only the 'regular' FPU state is saved, to
mimic the GLibc/i386 implementation. The state of
SSE/SSE2/etc registers is not part of the upstream
getcontext() implementation.
Review URL: https://breakpad.appspot.com/444002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1024 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch contains the source-related fixes to ensure that
the Breakpad unit tests build properly when targetting Android.
Calling 'make check' still fails because there is still no
way to run the unit test programs on a device. This will be
addressed by a future patch.
Important notes:
- You must target Android API level 9 (Gingerbread) or higher
to build the unit tests. This requirement is due to the
current GTest revision used in the breakpad source tree.
- This patch adds headers providing inlined C library functions
missing from the NDK (see src/common/android/testing). They
are inlined to avoid modifying Makefile.am and other build
files.
- Similarly, the <wchar.h> header-fix under
src/common/android/testing/include is only required by
GTest's current revision. E.g. it's not needed when building
Breakpad as part of Chromium which uses a more up-to-date
revision.
Review URL: https://breakpad.appspot.com/439002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1020 4c0a9323-5329-0410-9bdc-e9ce6186880e
This small patch allows the build of the tools and processor
when targetting Android with the Automake/Autconf build.
Not that these necessarily work correctly at the moment,
but there is no need for --disable-tools --disable-processor
now when using --host=arm-linux-androideabi or
--host=i686-linux-android.
+ Modify android/run-checks.sh to build all binaries with
the Automake build.
+ Tiny fix for --abi=x86 in android/run-checks.sh
Review URL: https://breakpad.appspot.com/438002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1018 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch remove many Android-specific #ifdefs from the Breakpad
source code. This is achieved by providing "fixed-up" platform
headers (e.g. <signal.h> or <sys/user,h>), in the new directory
src/common/android/include/, which masks differences between
the NDK and GLibc headers.
The old "android_link.h" and "android_ucontext.h" are moved
and renamed.
This also requires putting this directory as the first
include path during Android-hosted builds, hence the
modification of Makefile.am and configure.ac
Review URL: https://breakpad.appspot.com/434002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1017 4c0a9323-5329-0410-9bdc-e9ce6186880e
Until now, the context information was the current one when receiving a
SIGABRT. This is mainly wrong because the signal handler start in a new
context. This instead use the context passed to the signal handler.
Review URL: https://breakpad.appspot.com/435002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1015 4c0a9323-5329-0410-9bdc-e9ce6186880e
where the minidump should be created, without the need of opening any other
file.
BUG=None
TEST=Run unit-tests.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1007 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch removes a few libc calls from the client library
when generating a minidump.
+ Move the static inlined functions from linux_libc_support.h
into their own source file to avoid code duplication.
Tested on linux-x86_64 with 'make check' and 'android/run-checks.sh'
Review URL: https://breakpad.appspot.com/411002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1001 4c0a9323-5329-0410-9bdc-e9ce6186880e
Ted Mielczarek:
> You could try backing out r989, although Mozilla has been running with that
> patch for months without issue.
Me:
> src/client/windows/handler/exception_handler.cc in r989 appears to have
> formatting problems, an unwanted property change, and no real Breakpad review
> history, so maybe we should back it out anyway until the proper process is
> followed.
NACL Tests nacl_integration failures:
http://build.chromium.org/p/chromium/builders/NACL%20Tests/builds/30138
chrome src/native_client/tests/inbrowser_crash_test/crash_dump_tester.py says
that the observed failures are a symptom of crash_service.exe itself crashing.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@998 4c0a9323-5329-0410-9bdc-e9ce6186880e
Compilation directive for PPC was using MAC_OS_X_VERSION_MIN_REQUIRED.
This is not correct, as the latest SDKs allow to compile for older version of
Mac OS, but don't contain the ppc headers. Changing the directive to use
MAC_OS_X_VERSION_MAX_ALLOWED instead.
Moreover, uploader.mm was including pwd.h that was not used and doesn't exist
on the latest iOS SDK.
Review URL: https://breakpad.appspot.com/412002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@982 4c0a9323-5329-0410-9bdc-e9ce6186880e
In order to better distinguish Android and Linux minidumps, introduce
a new MD_OS_ANDROID definition, and modify related source code accordingly.
Also append the build-fingerprint to the minidump location descriptor.
This gives more information about the system image the device runs on.
Review URL: https://breakpad.appspot.com/405002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@981 4c0a9323-5329-0410-9bdc-e9ce6186880e
information about opened handles (!handle) and handle operations trace
(!htrace).
Depending on the dump type different amount of data is collected. For a full
dump all handles and complete handle trace are included to the dump. In the case
of a minidump the list of handle operations for a single handle value (the last
handle value that caused STATUS_INVALID_HANDLE exception) is recorded. In either
case the handle trace should be explicitly enabled by the client process (or by
a debugger) in order to produce any handle trace data.
BUG=131699
Patch by Alex Pakhunov <alexeypa@chromium.org>
Review URL: https://breakpad.appspot.com/410002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@979 4c0a9323-5329-0410-9bdc-e9ce6186880e
do with FPO (frame-pointer-omission) optimized context
frames where the context frame represents a Windows
System call stub.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@971 4c0a9323-5329-0410-9bdc-e9ce6186880e
thread and thread pool threads. This CL serializes access to the FSM state.
Handling of crash dump and client shutdown requests is still done
asynchronously.
Patch by Alex Pakhunov <alexeypa@chromium.org>
BUG=132164
TEST=remoting_unittests.BreakpadWinDeathTest.*
Review URL: https://breakpad.appspot.com/396002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@970 4c0a9323-5329-0410-9bdc-e9ce6186880e
Currently the log file and the minidump are uploaded in two consequent requests,
thus they get different report ids and it's hard to associate them to each
other.
This CL makes the crash uploader send the minidump and the log file together in
a single multipart request, so that they have the same report id and are
accessible from the same landing page.
Patch by Alexander Potapenko <glider@chromium.org>
Review URL: https://breakpad.appspot.com/387003/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@963 4c0a9323-5329-0410-9bdc-e9ce6186880e
The first module in a minidump is expected to be for the main executable.
We used to assume that /proc/<pid>/maps always showed that one first, but in
some cases that is no longer true (see comment #7 of the bug). So this
change makes use of the entry point stored in auxv to make sure we put the
correct module first.
BUG=chromium-os:25355
TEST=Ran Breakpad tests
Review URL: https://breakpad.appspot.com/366002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@942 4c0a9323-5329-0410-9bdc-e9ce6186880e
Change MinidumpModuleList::GetMainModule() to use GetModuleAtIndex() instead
of GetModuleAtSequence() because the former gets the first module that was
in the minidump file, while the latter actually gets the first module when
sorted by address. While this is pretty much the same thing at the moment,
I have another change in the works that can sometimes affect the module
order in the file.
BUG=chromium-os:25355
TEST=Ran Breakpad tests
Review URL: https://breakpad.appspot.com/366001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@941 4c0a9323-5329-0410-9bdc-e9ce6186880e
A memory leak in DisassemblerX86 is detected by valgrind. This patch
fixes the DisassemblerX86 destructor to properly free the |current_instr_|
variable.
BUG=471
TEST=Run valgrind on disassembler_x86_unittest to verify the leak is gone.
Review URL: https://breakpad.appspot.com/371001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@940 4c0a9323-5329-0410-9bdc-e9ce6186880e
The new API allows to automatically upload repports to the crash server when the application restarts.
This change also:
- Correct a bug on the test for correct alignment of the abrt signal handler
- Add user friendly information on crashes for SIGABRT and NSException
Review URL: https://breakpad.appspot.com/361001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@935 4c0a9323-5329-0410-9bdc-e9ce6186880e
Instead of using exc_server, the message is parsed directly, and the minidump
is created, then the app is killed.
Moreover, the only catch exception is exception_raise. This patch remove all
rereference to exception_raise_state and exception_raise_state_identity.
Review URL: https://breakpad.appspot.com/358001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@934 4c0a9323-5329-0410-9bdc-e9ce6186880e
- Cast result of _dyld_image_count to prevent compilation warning: The 2 int
in both side of the ? operator should have the same type.
- Remove unused variable for return values.
- Remove unused NSUserDefaults.
Review URL: https://breakpad.appspot.com/354001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@929 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch is taken from the downstream version of breakpad in
Chromium OS: https://gerrit.chromium.org/gerrit/15148
LinuxCoreDumperTest previously assumes the proc files of the child
process created by CrashGenerator::CreateChildCrash() have the same
content as its parent process, which may not be true. This CL modifies
CrashGenerator to copy the proc files of the child process, created by
CreateChildCrash(), before crashing that process.
BUG=chromium-os:25252
TEST=Verified the following:
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
Review URL: https://breakpad.appspot.com/353001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@925 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch fixes a compilation error with gcc / clang on Linux / Mac OS.
BUG=none
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
Patch by Ben Chan <benchan@chromium.org>
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@924 4c0a9323-5329-0410-9bdc-e9ce6186880e
it's deprecated. Apple marked bootstrap_register as deprecated on 10.5 but
it's actually still needed on that OS release. There isn't a way to get the
functionality Breakpad needs from it without calling it until 10.6.
Review URL: https://breakpad.appspot.com/350001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@921 4c0a9323-5329-0410-9bdc-e9ce6186880e
This CL adds a minidump_generator that can write a minidump from a NSException
on iOS on an ARM cpu.
This CL also install an uncaught exception handler on iOS, and use the
previous generator to write minidumps for any uncaught exception.
Review URL: https://breakpad.appspot.com/347001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@916 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch allows Breakpad's DWARF reader to at least read or skip
attributes using the new forms defined in version 4 of the DWARF
specification, instead of crashing.
Attributes encoded using DW_FORM_flag_present, DW_FORM_sec_offset, and
DW_FORM_exprloc should work fine now. However, compilation units using
DW_FORM_ref_sig8 to refer to types in .debug_types will need further work
to support. (GCC 4.6.2 does not emit .debug_types sections.)
Specifically:
- dwarf2reader::DwarfForm gets new values.
- dwarf2reader::Dwarf2Handler and dwarf2reader::DIEHandler get new handler
methods, named ProcessAttributeSignature, for DW_FORM_ref_sig8 attributes.
- dwarf2reader::CompilationUnit reads DW_FORM_ref_sig8 attributes, and
passes them to ProcessAttributeSignature. It also gets support for
DW_FORM_sec_offset, DW_FORM_exprloc, and DW_FORM_flag_present, using the
existing appropriate ProcessAttribute* methods.
- dwarf2reader::DIEDispatcher passes through ProcessAttributeSignature
attributes to its DIEHandler.
- Unit tests are updated.
a=jimb, r=ted.mielczarek
Review URL: http://breakpad.appspot.com/343003/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@912 4c0a9323-5329-0410-9bdc-e9ce6186880e
This is really incomplete --- it's just what's needed to get started
testing support for the DWARF 4 attribute forms.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@910 4c0a9323-5329-0410-9bdc-e9ce6186880e
When a variable is used to set (and lookup) MappingInfo's "start_addr"
field, it needs to match types -- which is "uintptr_t". When Chrome OS
updated the 'make' that's used for building, the 32-bit "char *" had
sign-extended when cast up to a u_int64_t -- maybe because pointers were
unsigned before and then changed to be signed -- and that caused the address
lookup to fail.
BUG=chromium-os:25355
TEST=Ran Breakpad unittests
A=mkrebs@chromium.org
Review URL: http://breakpad.appspot.com/345001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@908 4c0a9323-5329-0410-9bdc-e9ce6186880e
uploader.mm:549:5: warning: instance method '-uploadData:name:url:' not found (return type defaults to 'id')
[self uploadData:logFileData_ name:@"log" url:url];
=> it looks like this method does in fact not exist, the last parameter
needs to be removed.
breakpad_nlist_64.cc:193:59: warning: '&&' within '||' [-Wlogical-op-parentheses]
=> Just add parentheses, no functionality change.
Patch by Nico Weber <thakis@chromium.org>
BUG=none
TEST=breakpad stil works.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@907 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch is part of a bigger patch that helps merging the breakpad code
with the modified version in Chromium OS.
Specifically, this patch makes the following changes:
1. Turn the LinuxDumper class into a base class and move ptrace related
code into a new derived class, LinuxPtraceDumper.
2. Add a LinuxCoreDumper class, which is derived from LinuxDumper, to
extract information from a crashed process via a core dump file instead
of ptrace.
3. Add a WriteMinidumpFromCore function to
src/client/linux/minidump_writer/minidump_writer.h,
which uses LinuxCoreDumper to extract information from a core dump file.
4. Add a core2md utility, which simply wraps WriteMinidumpFromCore, for
converting a core dump to a minidump.
BUG=455
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
4. Run Chromium OS tests to test core2md.
Review URL: http://breakpad.appspot.com/343001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@905 4c0a9323-5329-0410-9bdc-e9ce6186880e
CrashGenerator::CreateChildCrash() may have some flakiness. This patch
changes ElfCoreDumpTest to temporarily skip the ValidCoreFile test if
no core dump is generated by CrashGenerator::CreateChildCrash(), but
print out the error message to help debug the flakiness.
BUG=chromium-os:24982
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.6.
2. All unit tests pass.
Review URL: http://breakpad.appspot.com/342001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@904 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch is part of a bigger patch that helps merging the breakpad code
with the modified version in Chromium OS.
Specifically, this patch makes the following changes:
1. Add two convenient methods, back() and empty(), to the wasteful_vector
class.
2. Refactor the LinuxDumper class such that it can later be splitted into
a base class and two derived classes, one uses the current ptrace
implementation and one uses a core file.
3. Refactor the MinidumpWriter class such that it can later use different
derived implementations of LinuxDumper.
BUG=455
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
Review URL: http://breakpad.appspot.com/340001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@902 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch is part of a bigger patch that helps merging the breakpad code
with the modified version in Chromium OS.
Specifically, this patch makes the following changes:
1. Add an ElfCoreDump class for processing Linux core dump files, which will
later be used to implement the core dump to minidump conversion.
2. Add a CrashGenerator class for generating a crash with a core dump file
for testing the functionalities of ElfCoreDump.
3. Move some utility functions for reading/writing files to file_utils.h.
BUG=455
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
Review URL: http://breakpad.appspot.com/337001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@900 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch is part of a bigger patch that helps merging the breakpad code
with the modified version in Chromium OS.
The MemoryRange class was added in r895 (http://breakpad.appspot.com/332001),
which is largely based on MMappedRange but generalized to be used in other
code. However, MemoryRange does not support minidump data structures. This
patch adds a MinidumpMemoryRange class that extends MemoryRange to handle
minidump data structures, which can then replace MMappedRange.
As with MemoryRange, MinidumpMemoryRange is unit tested.
BUG=455
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
4. Run minidump-2-core to covnert a minidump file to a core file.
Review URL: http://breakpad.appspot.com/335001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@898 4c0a9323-5329-0410-9bdc-e9ce6186880e
Manufacturing an exception record improves the crash reporting, since then
the crashes get bucketed by the call stack leading to the dump, instead of
all falling into a misc bucket that nobody ever looks at.
Currently these are occuring through e.g. dumps from the base watchdog.
Link against RtlCaptureContext, as the function has been documented as
available
from Windows XP
[http://msdn.microsoft.com/en-us/library/windows/desktop/ms680591(v=vs.85).aspx].
Patch by Siggi Asgeirsson <siggi@chromium.org>
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@897 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch is part of a bigger patch that helps merging the breakpad code
with the modified version in Chromium OS.
Specifically, this patch makes the following changes:
1. Add a SafeReadLink function that wraps sys_readlink() to resolve a
symbolic link but guarantees the result is NULL-terminated on success.
2. Refactor other source code to use SafeReadLink instead of readlink()
or sys_readlink().
BUG=455
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
4. Run minidump-2-core to covnert a minidump file to a core file.
Review URL: http://breakpad.appspot.com/334001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@896 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch is part of a bigger patch that helps merging the breakpad code
with the modified version in Chromium OS.
Specifically, this patch makes the following changes:
1. Add a MemoryRange class for encapsulating and checking read access
to a contiguous range of memory.
2. Add a MemoryMappedFile class for mapping a file into memory for
read-only access.
3. Refactor other source code to use MemoryMappedFile.
BUG=455
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
4. Run minidump-2-core to covnert a minidump file to a core file.
Review URL: http://breakpad.appspot.com/332001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@895 4c0a9323-5329-0410-9bdc-e9ce6186880e
The assertion (context.context_flags & MD_CONTEXT_X86) in synth_minidump.cc
produces a different message on Mac OS X than other platforms. This patch
changes the ContextDeathTest.X86BadFlags test to handle both message patterns.
BUG=424
TEST=Verified ContextDeathTest.X86BadFlags on Windows, Linux and Mac OS X.
Review URL: http://breakpad.appspot.com/333001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@894 4c0a9323-5329-0410-9bdc-e9ce6186880e
"const" that causes an error with the newer gcc.
BUG=chromium-os:14973
TEST=Built CrOS's google-breakpad
Patch by Michael Krebs <mkrebs@chromium.org>
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@878 4c0a9323-5329-0410-9bdc-e9ce6186880e
To be noted:
1) All is done in process, as multi-process is not allowed on ios.
2) Dump are saved when a crash occures but are not automatically send to the
server.
3) Breakpad.h contains function to check if a dump must be uploaded, and to
upload a dump.
4) The code is copy pasting a log of Breakpad implementation for Mac OS. It
might be possible to do some refactoring.
Review URL: http://breakpad.appspot.com/309003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@868 4c0a9323-5329-0410-9bdc-e9ce6186880e
forbidden by the style guide, and are bad practice in headers even under
style rules that tolerate this construct.
This fixes warnings such as:
In file included from dwarf2reader.cc:34:
dwarf2reader.h:53:17: warning: using namespace directive in global context in header [-Wheader-hygiene]
Review URL: http://breakpad.appspot.com/312002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@862 4c0a9323-5329-0410-9bdc-e9ce6186880e
This function already establishes that (signed) i must be positive by the time
it assigns it to (unsigned) reg. Because reg is unsigned, it is impossible for
it to be negative. Because i was already checked for positivity, this check
can be removed entirely. It was not a miswritten check that intended to check
i instead of reg, because i is already checked.
This addresses the following warning:
dwarf_cfi_to_module.cc:135:9: warning: comparison of 0 <= unsigned expression is always true [-Wtautological-compare]
Committed r859
Review URL: http://breakpad.appspot.com/310003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@861 4c0a9323-5329-0410-9bdc-e9ce6186880e
symupload printed -[NSData length], an NSUInteger, using %lu. %lu is proper
to print a "long" as unsigned, but NSUInteger is a typedef for "unsigned int"
when building for 32-bit. This would not have caused any problems, because in
the 32-bit model, both int and long are 32 bits wide. In the 64-bit model,
long is 64 bits wide, but NSUInteger is defiend as "unsigned long", so there
wouldn't have even been a warning in that case.
This addresses the following warning:
symupload.m:137:30:{137:28-137:31}{137:46-137:59}: warning: conversion specifies type 'unsigned long' but the argument has type 'NSUInteger' (aka 'unsigned int') [-Wformat]
Review URL: http://breakpad.appspot.com/313002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@860 4c0a9323-5329-0410-9bdc-e9ce6186880e
The actual defintion comes from common/mac/GTMLogger.h, #imported above.
This removes a compilation warning that showed up in r853:
uploader.m:52:9: warning: 'GTMLoggerDebug' macro redefined
GTMLogger.h:339:9: note: previous definition is here
Review URL: http://breakpad.appspot.com/310002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@859 4c0a9323-5329-0410-9bdc-e9ce6186880e
<Breakpad/BreakpadDefines.h>.
During the build of Breakpad itself (especially in Chromium), there is no
Breakpad.framework/Headers in which to locate BreakpadDefines.h, so the
framework-style #include of <Breakpad/BreakpadDefines.h> is not able to find
anything to #include. Using the "BreakpadDefines.h" form should always locate
this file next to Breakpad.h whether it's in the framework or in the source
tree.
This fixes a Chromium build regression caused by Breakpad r856.
Review URL: http://breakpad.appspot.com/313001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@857 4c0a9323-5329-0410-9bdc-e9ce6186880e
This will be needed for iOS implementation, where the Inspector won't be
used, but where a config file will still be needed, because the uploads
won't happen just after the crash, but on a next run.
Review URL: http://breakpad.appspot.com/309001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@852 4c0a9323-5329-0410-9bdc-e9ce6186880e
Regression from Breakpad r842 (Chromium r103778) - browser crash reports were
uploaded, but renderer crash reports were not. Messages such as these may have
been logged:
com.apple.launchd.peruser.x[y] could not lookup DNS configuration info
service: (ipc/send) invalid destination port
com.apple.launchd.peruser.x[y] Breakpad Reporter: Send Error: Error
Domain=NSURLErrorDomain Code=-1009 UserInfo=z "This computer’s Internet
connection appears to be offline." Underlying Error=(Error
Domain=kCFErrorDomainCFNetwork Code=-1009 UserInfo=w "This computer’s Internet
connection appears to be offline.")
When OnDemandServer establishes the bootstrap subset, it will now register the
parent bootstrap port in the subset namespace so that the Inspector can
recover this port and switch to it. The Sender, launched by the Inspector,
relies on the bootstrap port being set properly.
BUG=chromium:99252
TEST=All test cases from Chromium r103778 (bug chromium:28547) plus:
about:crash should generate a crash report which should be uploaded,
provided that throttling is not in effect. Remove or edit
~/Library/Preferences/com.Breakpad.crash_report_sender.plist to defeat
throttling. Also verify that about:inducebrowsercrashforrealz works.
Review URL: http://breakpad.appspot.com/307001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@843 4c0a9323-5329-0410-9bdc-e9ce6186880e
lifetime of the task to be monitored, the invoking task. This allows the
bootstrap server (in launchd) to automatically clean up the Mach server
registration when the task being monitored exits, avoiding leaks of
com.Breakpad.Inspector(pid) ports in "launchctl bslist".
BUG=chromium:28547
TEST=Handler should still crash catches, but inspector ports should no longer
show up in "launchctl bslist". They should show up under a subset port in
"launchctl bstree" instead. "launchctl bstree" must be invoked as root.
Review URL: http://breakpad.appspot.com/306001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@842 4c0a9323-5329-0410-9bdc-e9ce6186880e
was already the SDK being used for x86_64 Release mode. The 10.6 SDK is not
necessary.
Explicitly set the file encoding to UTF-16 on the sender app's lproj's
InfoPlist.strings and Localizable.strings files.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@840 4c0a9323-5329-0410-9bdc-e9ce6186880e
The value of MD_CONTEXT_CPU_MASK in use assumes that only the lower 6 bits are used for flags, and the upper 26 bits are for the CPU type. However, as of Windows 7 SP1, the 7th bit is being used as a flag (per http://msdn.microsoft.com/en-us/library/hh134238%28v=vs.85%29.aspx and the Windows SDK headers). Adjusting MD_CONTEXT_CPU_MASK works, but unfortunately that masks off the existing value of MD_CONTEXT_ARM. This patch also changes the value of MD_CONTEXT_ARM and adjusts the minidump context reading machinery to gracefully handle minidumps with the old value.
R=mark at http://breakpad.appspot.com/302001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@831 4c0a9323-5329-0410-9bdc-e9ce6186880e
effect.
BUG=none
TEST=Apple Crash Reporter logs from processes in which Breakpad handles the
crash should point the finger at the actual crash source, not the
Breakpad thread's attempt to write to unwritable memory.
Review URL: http://breakpad.appspot.com/301001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@828 4c0a9323-5329-0410-9bdc-e9ce6186880e
split up into multiple regions.
An older workaround relyied on known fixed stack locations and only filled in
the initial page of the stack if it was in a distinct region. The new approach
looks upwards for additional regions that appear to be part of the same stack.
With PIE on Lion, the stack no longer begins at a fixed address, so the older
workaround became ineffective.
BUG=247, chromium:94107
TEST=Stacks should run through to _main/start and then stop when examining
Chrome on Lion with PIE and "slid" stacks.
Review URL: http://breakpad.appspot.com/300001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@826 4c0a9323-5329-0410-9bdc-e9ce6186880e
This libcrypto dependency sucks. Linking against OpenSSL is sort of broken in
certain Mac OS X SDKs. libcrypto was only being used to provide an MD5
implementation. Breakpad already has its own MD5 implementation, so just use
that instead.
To be perfectly honest, on modern systems, nothing should be making MD5
hashes of modules anyway, because everything has an embedded LC_UUID.
The project file changes just remove libcrypto and add md5.c as needed.
A bonus (and untested) fix for on_demand_symbol_supplier.mm is included to
account for changes in r794.
Review URL: http://breakpad.appspot.com/296001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@819 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch adds synth_elf::{StringTable,SymbolTable,ELF} classes to
produce in-memory ELF files to properly test the Linux symbol dumping
code. It also uses those classes to add some basic tests for
the WriteSymbolFile function.
R=jimb at http://breakpad.appspot.com/277001/show
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@794 4c0a9323-5329-0410-9bdc-e9ce6186880e
Fix an assertion where a zero-length buffer was being passed to
UntypedMDRVA::Copy(). This occurred when WriteFile() was given a file whose
size was a multiple of the temporary buffer size. In this issue's case, the
procfs file "environ" happened to be 2032 bytes, while the temporary buffer
was 1016 bytes.
Patch by Michael Krebs <mkrebs@chromium.org>
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@792 4c0a9323-5329-0410-9bdc-e9ce6186880e
In r779, at the last moment, I added a default call count expectation for
the UnnamedFunction warning to the CUFixtureBase constructor, but didn't
re-run the tests. This patch adjusts all affected tests.
a=jimblandy, r=ted.mielczarek
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@782 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch makes sure dump_syms behaves properly when presented with
malformed DWARF data that provides no name for a function. We print a
warning message to stderr, and subsitute "<name omitted>" for the empty
string, so that the "FUNC" record written to the symbol file for the
function is still well-formed. (We may have line number data covering the
function, so it would be a shame to omit the function altogether.)
Unit tests included.
a=jimblandy, r=ted.mielczarek
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@779 4c0a9323-5329-0410-9bdc-e9ce6186880e
is no reason not to keep it locally. Implemented a basic disassembler which can be used
to scan bytecode for interesting conditions. This should be pretty easy to add to for
things other than exploitability if there is a desire. This also adds several tests to
the windows exploitability ranking code to take advantage of the disassembler for x86
code.
BUG=None
TEST=DisassemblerX86Test.*
Review URL: http://breakpad.appspot.com/203001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@705 4c0a9323-5329-0410-9bdc-e9ce6186880e
Backed out r684 (added glog include dir to client gyp files). It was obviated by r685, which removed the dependency on glog from the client projects.
BUG=None
TEST="gclient runhooks --force"; build crash_generation_app; launch crash_generation_app.
r=hansl at http://breakpad.appspot.com/191001/show
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@696 4c0a9323-5329-0410-9bdc-e9ce6186880e
After the final DIE in a compilation unit, there may be any number of
zero bytes present. This is meant to allow producers to align
compilation unit starting points when necessary.
This patch changes the dwarf2reader::CompilationUnit class to skip
those zero bytes, rather than interpreting them as 'end of children'
markers for DIEs that do not exist. Without this change, the padding
bytes will cause the reader to attempt to pop an offset from an empty
stack, and call EndDIE with a garbage offset.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@667 4c0a9323-5329-0410-9bdc-e9ce6186880e
Perhaps there once was some reason one needed the DIE offset stack to
have an unusual lifetime, but there is none now.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@666 4c0a9323-5329-0410-9bdc-e9ce6186880e
tgkill() is not necessarily possible, as a sandbox might block this call.
This changelist tries different approaches depending on whether we received
a synchronous or an asynchronous signal. This fixes unittest failures and
also runs correctly in sandbox'd environments.
TEST=ran unittest, and opened about:crash in sandbox'd Chrome
BUG=395
A=markus@chromium.org
Original review: http://breakpad.appspot.com/159001
Review URL: http://breakpad.appspot.com/146002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@656 4c0a9323-5329-0410-9bdc-e9ce6186880e
what architecture name is shown in a symbol file's MODULE line, but the Mac
crash_report tool's on_demand_symbol_supplier does. The new Mac dumper
inadvertently used i386. Correct that to make it x86. Temporarily make the
on_demand_symbol_supplier accept symbol files whose architecture is i386.
Also add x86_64 to the set of architectures that the on_demand_symbol_supplier
considers valid.
BUG=none
TEST=none
Review URL: http://breakpad.appspot.com/143001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@638 4c0a9323-5329-0410-9bdc-e9ce6186880e
Inspector::ReadMessages as was done before r627. The "hello" message contains
the parameter count and is referenced while the message reader loops through
parameter messages. Prior to r627, both messages were named |message|, which
was confusing, probably caused a compiler warning, and apparently provided the
motivation to share them. This caused the crash inspector to fail to properly
collect the parameters. The common failure mode (although others are possible)
was for the inspector to attempt tor read more parameter messages than were
available, resulting in an IPC timeout and inspector death. No crash report
would be written, and the application expecting its crash to be inspected
would time out waiting for a response from the inspector and then _exit. This
is effectively a failure to properly handle crashes.
The inner message is reintroduced, and named parameter_message for
disambiguation.
BUG=chromium:49821
TEST=Crashes catchable by the Mac Breakpad framework
Review URL: http://breakpad.appspot.com/123002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@628 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch avoids allocating many copies of identical strings appearing in
debugging information. Without this patch, running dump_syms on Mozilla's
libxul.so (with 173MiB of debugging information) has a peak resident set of
around 450MiB. With this patch, the peak is around 365MiB.
a=jimblandy, r=mark
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@626 4c0a9323-5329-0410-9bdc-e9ce6186880e
At present, the Linux symbol dumper maps the ELF file into memory to
examine the debugging information it contains, but then also calls
google_breakpad::FileID::ElfFileIdentifier, which maps the ELF file into
memory again. Some of our object files are large; Mozilla's libxul.so is
1.1GiB. Trying to map such files twice can interfere with tools like
valgrind that map themselves into high addresses (in an attempt to stay out
of the way of ordinary programs).
The FileID class has another method, ElfFileIdentifierFromMappedFile, that
operates on an already-loaded image of the file; use that instead.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@625 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch avoids unnecessary use of the <cfoo> headers in files that don't
actually use the identifiers they declare in the std:: namespace.
It also changes some files to better conform with the "Names and Order of
Includes" rules in the Google C++ Style Guide.
A=jimb R=mark
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@619 4c0a9323-5329-0410-9bdc-e9ce6186880e
I came across a bunch of comments Neal had made on issue 55011 that I
hadn't addressed. This patch takes care of them.
A=jimb R=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@618 4c0a9323-5329-0410-9bdc-e9ce6186880e
The dwarf_cu_to_module_unittest and bytereader_unittest test executables
include object files from which they use no code.
A=jimb R=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@617 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch adds all the appropriate symbol dumper unit tests to the Mac
XCode dump_syms project. This allows us to test this code on a 64-bit
platform.
A=jimb R=mark
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@616 4c0a9323-5329-0410-9bdc-e9ce6186880e
The subclasses of CallFrameInfo::Rule store the rule currently in
force for recovering a register or computing the canonical frame
address. Their sole responsibility is to accurately convey rules from
the parser, which creates them, to a CallFrameInfo::Handler member
function, which consumes them. So, the types of their data members
should match those of the corresponding arguments of the corresponding
Handler member function.
CallFrameInfo::OffsetRule and CallFrameInfo::ValOffsetRule use an
'int' to store the rule's offset value, but
CallFrameInfo::Handler::OffsetRule and ...::ValOffsetRule expect a
'long'. On ABIs where 'long' is larger than 'int', this can cause
values to be truncated or sign-extended unexpectedly.
This patch changes those members to 'long'.
Fortunately, offsets appearing in real DWARF call frame information
never even come close to the limits of a 32-bit int, so this bug is
unlikely to cause any practical problems.
A=jimb R=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@615 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch rewrites the Mac symbol dumper to use the same set of classes
the Linux dumper does for reading debugging information from various
sources, consolidating them into a single table, and writing that out as a
Breakpad symbol file.
In the process, it also adds support for dumping DWARF call frame
information and .eh_frame exception-handling information as Breakpad 'STACK
CFI' records. This allows the Breakpad processor to generate stack traces
from code compiled with -fomit-frame-pointer.
The patch also replaces the DumpSymbols Objective C++ class with
google_breakpad::DumpSymbols, a plain C++ class. The code still uses some
Objective C++ to use the Foundation facilities for dealing with file names
in a file-system-independent fashion, and for examining the contents of
.dSYM bundles.
Since the code has been entirely rewritten, I have changed the author
lines.
A=jimb R=mark
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@614 4c0a9323-5329-0410-9bdc-e9ce6186880e
The #inclusions of <elf.h> and <link.h> were inherited from older code, but
the current code doesn't need anything from them, so they should be
removed.
A=jimb R=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@613 4c0a9323-5329-0410-9bdc-e9ce6186880e
For some reason, Mac OS X places DWARF debugging information in sections
whose names begin with "__", rather than the names beginning with "." given
in the DWARF spec. This patch changes google_breakpad::DwarfCUToModule to
look for line number information under both names.
A=jimb R=mark
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@612 4c0a9323-5329-0410-9bdc-e9ce6186880e
Instead of using bzero in main, use constructors to initialize the
Options structure.
Use C++ bool, not Objective-C BOOL.
Use a const NXArchInfo * to represent the architecture name, so that we can
use the NXGetLocalArchInfo, NXGetArchInfoFromName, etc. to handle things.
Delete the 'uuidStr' member; it is unused.
Leave Options::srcPath as an NSString, so that we can continue to use the
filesystem path abstraction methods provided by the Foundation framework.
A=jimb R=mark
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@611 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch adds files defining new classes in the google_breakpad::Mach_O
namespace for parsing fat binaries and Mach-O files. These are used in the
new dumper to handle STABS debugging information, DWARF call frame
information, and .eh_frame exception handling stack walking information.
These new classes are independent of endianness and word size, and
therefore can be used on binaries of all the relevant architectures: x86,
x86_64, ppc, and ARM.
The patch adds a complete set of unit tests for the new classes.
A=jimb R=mark (http://breakpad.appspot.com/93001/show, http://breakpad.appspot.com/115001/show)
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@610 4c0a9323-5329-0410-9bdc-e9ce6186880e
Created the exception_handler_test that test the generation of dump and the dumps themselves.
Moved all dump analysis code from minidump to its right class DumpAnalysis. The class is used by both minidump_test and exception_handler_test. The tests are way simpler that way (ie. no handling of HANDLE).
minidump_test now uses the minidump_generator class instead of using Win32. It works well and pass all tests.
exception_handler now passes both the exception and assertion infos to the client to generate the dump. If one is NULL it's going to be handled correctly.
crash_generation_client can now RequestDump with both exception and assertion info.
minidump_generator returns both the mini and full dump string pointers, and output both (or either) depending on which was generated.
All original interfaces and method signature are still there, but call the new functions if possible.
Review URL: http://codereview.chromium.org/1994015
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@596 4c0a9323-5329-0410-9bdc-e9ce6186880e
I had to remove the dependency from base (was using FilePath and ScopedHandle, replaced them by standard std::wstring and HANDLE). Also removed the logging and the main from the original files.
This will serve as a base for testing breakpad's dump generation. It is kept like this for easier tracking.
Review URL: http://codereview.chromium.org/1964006
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@592 4c0a9323-5329-0410-9bdc-e9ce6186880e
The XCode project file has become encrufted with duplicate Executable
entres and some strange settings. This patch deletes and recreates various
entries to make things neat again. It should have no effect on the
project's visible behavior.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@591 4c0a9323-5329-0410-9bdc-e9ce6186880e
to TestAssembler::Section.
This patch helps the TestAssembler classes generate Mach-O object files for
use as test input.
This patch adds a new AppendCString overloading to TestAssembler::Section
for emitting null-terminated strings in fixed-length buffers, where the
string is truncated and the terminating null character omitted if the
string is too large for the buffer.
The patch includes unit tests for the new AppendCString overloading. It
also provides some for the existing overloading, which had been neglected.
a=jimblandy, r=mark
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@590 4c0a9323-5329-0410-9bdc-e9ce6186880e
Breakpad's Macintosh symbol dumper uses deprecated functions for
dealing with mixed-endianness code. This patch provides an overloaded
function, ByteSwap, that automatically chooses the OSSwap* functions
from <libkern/OSByteOrder.h> appropriate for its argument's
size.
This patch does *not* address warnings in src/common/mac/dump_syms.mm,
because that code is about to be replaced entirely; there's no reason to
bother reviewing a big, detailed patch against it.
a=jimblandy, r=mark
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@589 4c0a9323-5329-0410-9bdc-e9ce6186880e
It's possible to imagine an implementation of google_breakpad::Module in
which calling SetLoadAddress at different times as the Module is populated
would produce different output. For the Mac dumper, we'd like to depend on
its current behavior --- that the load address is subtracted off only when
writing the symbol file, and can be set at any time prior to that.
This patch makes that promise part of Module's contract, and adjusts the
test suite to verify that that promise is met.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@588 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch addresses two differences between Linux and Macintosh OS X STABS
data:
- StabsReader assumes that the STABS entries follow the conventions for
storing STABS data in object file sections (that is, .stabs and
.stabstr), rather than in the object files's linker symbol table. On Mac
OS X, STABS entries live in the Mach-O file's LC_SYMTAB load command,
along with all the other linker symbols; they are not grouped into units
by N_UNDF entries.
This patch adds a boolean argument to the StabsReader constructor
indicating whether the parser should treat N_UNDF entries as unit
boundaries; this argument should be true on Linux, and false on Mac. The
patch changes src/common/linux/dump_symbols.cc to pass this new argument.
- Mac OS X STABS place SLINE (line number) records immediately before the
FUN record for the function to which they belong, and the values of such
records are absolute, not relative to the function start.
This patch extends the parser to queue up such records and report them to
the handler when we do see the FUN record. The meaning of
StabsHandler::Line remains unchanged; existing handlers do not need to be
adjusted.
This patch also adds unit tests for the new parser behaviors.
a=jimblandy, r=mark
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@587 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch factors out some of the common code in the StabsReader unit
tests into a fixture class. Pretty mechanical.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@586 4c0a9323-5329-0410-9bdc-e9ce6186880e
An N_FUN stabs with no name is an explicit end-of-function marker, whose
value is the size of the function. This patch changes the stabs reader to
recognize these and use them to compute the function's ending address,
instead of treating them as functions with no names and mysterious
addresses. It also adds appropriate unit tests.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@585 4c0a9323-5329-0410-9bdc-e9ce6186880e
All the other classes which receive debugging data from some sort of parser
and use it to populate a Module have names ending in "ToModule":
DwarfCUToModule, DwarfCFIToModule. Also, DumpStabsHandler doesn't actually
dump anything.
This patch renames the DumpStabsHandler class to StabsToModule, which is
more consistent and descriptive.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@584 4c0a9323-5329-0410-9bdc-e9ce6186880e
StabsReader simply applies a reinterpret_cast to treat the stab entry data
as an array of 'struct nlist' structures, making the parser specific on the
host endianness, word size, and alignment rules. On Mac OS X, a single fat
binary file may contain object files of different ABIs, of which the user
chooses one at run time.
This patch changes the parser to read the data using the google_breakpad::
ByteCursor class, which can handle different endiannesses and word sizes.
The StabsReader constructor now takes arguments indicating the endianness
of the data and the size of each entry's value field. The patch changes
src/common/linux/dump_symbols.cc to pass the new argument.
This patch changes the StabsReader unit tests to use the google_breakpad::
TestAssembler classes to generate test data, rather than reading it from a
file. This makes it easy to generate test data in various endiannesses and
word sizes. It also adds tests for the new parser behaviors.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@583 4c0a9323-5329-0410-9bdc-e9ce6186880e
The ByteBuffer and ByteCursor classes are utility classes for reading
binary files, handling endianness and word size issues in a portable way.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@582 4c0a9323-5329-0410-9bdc-e9ce6186880e
The DumpStabsHandler class creates Module::Function objects as it processes
data from the StabsReader, but waits to add the Functions to the Module
until all parsing is complete and its Finalize member function is called,
so that it can compute line and function end addresses that the STABS data
may have left implicit.
If the DumpStabsHandler is destructed before its Finalize method is called,
it fails to free the Functions it has created, but not yet added to the
Module. (Adding a Function to a Module transfers ownership of the Function
to the Module.)
This adds a destructor to DumpStabsHandler which takes care of freeing any
Functions that it still owns.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@576 4c0a9323-5329-0410-9bdc-e9ce6186880e
At the moment, the mappings from register numbers appearing in DWARF CFI
and .eh_frame exception handling sections to the appropriate
processor-specific names are in src/common/linux/dump_syms.cc. However, the
numberings are (for the most part) the same on all platforms using DWARF,
so there's no reason those tables shouldn't be shared between the Linux and
Mac symbol dumpers.
This patch moves the tables into a nested class of DwarfCFIToModule, so
they the Mac dumper can use them when it is changed to use
DwarfCFIToModule.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@575 4c0a9323-5329-0410-9bdc-e9ce6186880e
The google_breakpad::TestAssembler classes are used in both the processor's
and the Linux dumper's test suites, and will soon be used in the Mac
dumper's tests as well. This patch moves their source files from
src/processor to src/common.
a=jimblandy, r=thestig
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@574 4c0a9323-5329-0410-9bdc-e9ce6186880e
When building with G++ 4.1.2, src/processor/cfi_frame_info.cc fails to
build with the error below. G++ 4.2.1 and later do not seem to report this
problem.
This patch works around the problem by casting stream.tellp() to
std::streamoff before doing the comparison.
src/processor/cfi_frame_info.cc: In member function `std::string google_breakpad::CFIFrameInfo::Serialize() const':
src/processor/cfi_frame_info.cc:105: error: ambiguous overload for `operator!=' in `stream.std::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::<anonymous>.std::basic_ostream<_CharT, _Traits>::tellp [with _CharT = char, _Traits = std::char_traits<char>]() != 0'
src/processor/cfi_frame_info.cc:105: note: candidates are: operator!=(std::streamoff, int) <built-in>
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/postypes.h:143: note: bool std::fpos<_StateT>::operator!=(const std::fpos<_StateT>&) const [with _StateT = __mbstate_t]
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@572 4c0a9323-5329-0410-9bdc-e9ce6186880e
pdb filenames in crash reports may contain embedded newlines. When
minidump-stackwalk prints these lines, it ends up with:
Module|olek8r4u.dll|6.0.6000.16386|\\xc2\\xeb\\x17\\x04J\\xb6:\\xbaT\\xf3\\xef\\xe8Y\\x90\\x86\\xaa\\xe5\\x16n\\xb1\\x80\\x85\\t\\x12!\\x16\\x0f\\x98\\xf8\\x89\\x16"\\x96\\xd4\\x84\\x88\\xea\\xe3\\r\\r\\x1b\\xca\\x85*^h\\xf5\\xdc\n\\xd9\\xf4}j\\x1d7\\xe39o\\x1f\\xc5\\xc4\\xa6x\\x8ba\\xe8\\xd6K\\x89H\\xe1\\xff\\xe7\\xf5\\xf0Y\\xfd\\xf5\\xdbu\\x0c\\x07\\x86\\xed|29E0B04FCCBE47EB86A6C819E8B89D051|0x00f60000|0x00ff2fff|0\n
Which has an embedded newline and the machine parser can't handle it. This
patch just strips the embedded newline, just as we strip embedded |
separator characters.
a=bsmedberg, r=jimblandy
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@571 4c0a9323-5329-0410-9bdc-e9ce6186880e
The Linux symbol dumper's classes are reasonably portable, and should be
usable for the Mac dumper as well. Move them to src/common, along with
their unit tests. Update #include directives and Makefile.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@567 4c0a9323-5329-0410-9bdc-e9ce6186880e
In the process of pairing up DWARF source lines with the functions they
belong to, the dumper detects and warns about regions of functions that
have no source line information, and vice versa. However, this seems to
occur in real code frequently enough (although not often) that the warnings
may obscure more serious problems.
This patch makes those warnings disabled by default in
DwarfCUToModule::WarningReporter. It does not add a way for the dump_syms
user to enable them.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@566 4c0a9323-5329-0410-9bdc-e9ce6186880e
In order to dump call frame information held in .eh_frame sections, the
dumper needs to know the proper base address to use for pointers encoded
using the DW_EH_PE_textrel encoding. This should be the start of the .text
section. However, due to a cut-and-paste typo, the dumper was supplying the
base address of the ".got" section instead.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@564 4c0a9323-5329-0410-9bdc-e9ce6186880e
The Linux dumper's Makefile doesn't record the object files' dependence on
header files at all, just because I was too lazy to write them out and knew
I would forget to keep them up to date anyway. But I've wasted too much
time tracking down mysterious segmentation faults and other problems after
changing header files, and I know it's wasted others' time, too.
a=jimblandy, r=nealsid,dmuir
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@563 4c0a9323-5329-0410-9bdc-e9ce6186880e
The comments don't accurately describe what the style guide says.
Regardless of what the style guide says, RTTI seems to make trouble in
practice, because so many people build with it disabled. Since only the
symbol dumper uses RTTI, not the client library, it may be practical for
people to simply enable RTTI for the dumper. Failing that, it may be best
in the long run to violate the style guide and make the code work sans
RTTI.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@561 4c0a9323-5329-0410-9bdc-e9ce6186880e
- Use manifest constants for 'z' augmentation letters.
- Fix typos and rearrange some code for legibility.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@560 4c0a9323-5329-0410-9bdc-e9ce6186880e
Breakpad Linux client: Simplify VerifyStackReadWithMultipleThreads unit test.
As written, the VerifyStackReadWithMultipleThreads unit test makes
assumptions about the layout of thread_function's stack frame. As a result,
the test will fail when compiled with some compilers, or built with certain
optimization levels.
As an extension to C++, the GNU compilers allow you to request that a
variable be placed in a specific register. Using this, we can have
thread_function put the thread id in place where the test can find it
reliably.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@559 4c0a9323-5329-0410-9bdc-e9ce6186880e
As written, the VerifyStackReadWithMultipleThreads unit test makes
assumptions about the layout of thread_function's stack frame. As a result,
the test will fail when compiled with some compilers, or built with certain
optimization levels.
As an extension to C++, the GNU compilers allow you to request that a
variable be placed in a specific register. Using this, we can have
thread_function put the thread id in place where the test can find it
reliably.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@558 4c0a9323-5329-0410-9bdc-e9ce6186880e
Having an exception of interest makes the resultant minidumps look just like
crash dumps, in that the processor can identify the "crashing" tread.
This means such minidumps can be classified by the stack signature, in contrast to the current state of things, in which all such dumps get lumped on a single pile.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@557 4c0a9323-5329-0410-9bdc-e9ce6186880e
This adds support for 'STACK CFI' records (DWARF CFI) to the AMD64
stack walker. This is necessary for the stack trace to include any
frames other than the youngest. Unit tests are included.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@554 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch allows the Breakpad minidump processor to use data from
STACK CFI records to generate stack traces for the ARM processor.
In the symbol dumper, we need a table mapping DWARF CFI register
numbers to their names: STACK CFI records refer to registers by name.
In the processor, we expand StackwalkerARM::GetCallerFrame to see if
there are STACK CFI records covering the callee, and then use those to
recover the caller's register values.
There's no good reason the ARM walker couldn't use the SimpleCFIWalker
interface declared in cfi_frame_info.h. Unfortunately, that interface
assumes that one can map register names to member pointers of the raw
context type, while MDRawContextARM uses an array to hold the
registers' values: C++ pointer-to-member types can't refer to elements
of member arrays. So we have to write out SimpleCFIWalker::FindCallerRegisters
in StackwalkerARM::GetCallerFrame.
We define enum MDARMRegisterNumbers in minidump_cpu_arm.h, for
convenience in referring to certain ARM registers with dedicated
purposes, like the stack pointer and the PC.
We define validity flags in StackFrameARM for all the registers, since
CFI could theoretically recover any of them. In the same vein, we
expand minidump_stackwalk.cc to print the values of all valid
callee-saves registers in the context --- and use the proper names for
special-purpose registers.
We provide unit tests that give full code and branch coverage (with
minor exceptions). We add a testing interface to StackwalkerARM that
allows us to create context frames that lack some register values.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@553 4c0a9323-5329-0410-9bdc-e9ce6186880e
Extend google_breakpad::CFISection with the ability to produce
.eh_frame data. Entry headers have a different format, and pointers
can be encoded in new and fascinating ways.
Extend dwarf2reader::CallFrameInfo to be able to parse either DWARF
CFI or .eh_frame data, as determined by an argument to the
constructor. Cope with variations in header formats, encoded pointers,
and additional data in 'z' augmentation data blocks. Extend the unit
tests appropriately.
Extend dump_syms to look for a .eh_frame section, and if it is
present, find the necessary base addresess and parse its contents.
There's no need for DwarfCFIToModule to check the version numbers; if
CallFrameInfo can parse it, DwarfCFIToModule should be able to handle
it. Adjust tests accordingly.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@552 4c0a9323-5329-0410-9bdc-e9ce6186880e
The Linux C++ exception handling data format (.eh_frame) can specify a
number of different encodings for the addresses it contains. This
patch extends dwarf2reader::ByteReader to read pointers encoded in
these ways.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@551 4c0a9323-5329-0410-9bdc-e9ce6186880e
Define a new DWARF parser class, dwarf2reader::CallFrameInfo.
Extend google_breakpad::Module to store and write out 'STACK CFI' records.
Define a new google_breakpad::DwarfCFIToModule class, to accept DWARF
CFI data from the parser and populate a Module with the equivalent
STACK CFI records.
Extend the Linux symbol dumping tool, dump_syms, to use
dwarf2reader::CallFrameInfo, google_breakpad::DwarfCFIToModule, and
google_breakpad::Module to extract DWARF CFI from the executable or
shared library files and write it to the Breakpad symbol file.
Define CFISection, a new class derived from TestAssembler::Section,
for use in creating DWARF CFI data for test cases.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@550 4c0a9323-5329-0410-9bdc-e9ce6186880e
Add a CFIFrameInfo class (named for symmetry with WindowsFrameInfo) to
represent the set of STACK CFI rules in effect at a given instruction,
and apply them to a set of register values. Provide a SimpleCFIWalker
class template, to allow the essential CFI code to be shared amongst
the different architectures.
Teach BasicSourceLineResolver to partially parse 'STACK CFI' records,
and produce the set of rules in effect at a given instruction on
demand, by combining the initial rule set and the appropriate rule
deltas in a CFIFrameInfo object.
Adapt StackwalkerX86 and StackFrameX86 to retrieve, store, and apply
CFI stack walking information.
Add validity flags for all the general-purpose registers to
StackFrameX86::ContextValidity.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@549 4c0a9323-5329-0410-9bdc-e9ce6186880e
Issue 53001 (http://breakpad.appspot.com/53001) defines the
TestAssembler classes; those, along with a new set of mock classes
defined in stackwalker_unittest_utils.h, make it possible for us to
actually do proper unit testing of a stack walker. These tests get us
full code coverage for stackwalker_x86.cc.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@548 4c0a9323-5329-0410-9bdc-e9ce6186880e
This also adds two new test utility class groups, TestAssembler and
SynthMinidump. These are overkill for what I'm doing with them here
(and may simply be overkill, period), but they make it easy to write
unit tests for code that works on binary files or raw memory contents
in a cross-platform way. I'm planning to use them for the DWARF CFI
unwinding tests and the DWARF CFI parser tests.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@547 4c0a9323-5329-0410-9bdc-e9ce6186880e
Programs compiled with -ffunction-sections -Wl,--gc-sections may have
SO entries for the start of the compilation unit whose addresses are
zero, even when the compilation unit contains non-omitted functions at
non-zero addresses. The breakpad dumper should not assume that the
compilation unit starting address is always non-zero.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@542 4c0a9323-5329-0410-9bdc-e9ce6186880e
As explained in the code:
Given the right options, the GNU toolchain will omit unreferenced
functions from the final executable. Unfortunately, when it does so,
it does not remove the associated portions of the line number program;
instead, it lets the symbol references in the DW_LNE_set_address
instructions pointing to the now-deleted code resolve to zero. Given
this input, the DWARF line parser will call AddLine with a series of
lines starting at address zero.
Rather than collecting series of lines describing code that is not
there, we should drop them. Since the linker doesn't explicitly
distinguish references to dropped sections from genuine references to
zero, we must use a heuristic. We have chosen:
- If a line starts at address zero, omit it. (On the platforms
breakpad targets, it is extremely unlikely that there will be code
at address zero.)
- If a line starts immediately after an omitted line, omit it too.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@538 4c0a9323-5329-0410-9bdc-e9ce6186880e
Some versions of the libstdc++, the GNU standard C++ library, have
stream extractors for unsigned integer values that permit a leading
'-' sign (6.0.13); others do not (6.0.9). Regardless of the behavior
of the extractors, Breakpad postfix expressions should support
negative literals.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@537 4c0a9323-5329-0410-9bdc-e9ce6186880e
Some of the error messages that could be generated in the process of
parsing DWARF debugging information lack terminating newlines.
a=jimblandly, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@536 4c0a9323-5329-0410-9bdc-e9ce6186880e
Any DIE with an DW_AT_inline attribute can be cited by
DW_AT_abstract_origin attributes --- even if the value of the
DW_AT_inline attribute is DW_INL_not_inlined. Thus, we need to set the
inline_ flag on all such DIEs, regardless of the attribute's value.
This allows us to find names in situations like this:
<1><30cf>: Abbrev Number: 57 (DW_TAG_subprogram)
<30d0> DW_AT_specification: <0x3013>
<30d4> DW_AT_decl_file : 1
<30d5> DW_AT_decl_line : 92
<30d6> DW_AT_inline : 0 (not inlined)
<30d7> DW_AT_sibling : <0x30f0>
...
<1><30f5>: Abbrev Number: 59 (DW_TAG_subprogram)
<30f6> DW_AT_abstract_origin: <0x30cf>
<30fa> DW_AT_low_pc : 0x13bc
<30fe> DW_AT_high_pc : 0x13ec
<3102> DW_AT_frame_base : 0x2c (location list)
<3106> DW_AT_sibling : <0x3113>
a=jimblandy, r=nealsid,dmuir
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@526 4c0a9323-5329-0410-9bdc-e9ce6186880e
FindSectionByName will return the first section whose name starts with
NAME, because strncmp stops the comparison once NAME's characters have
been found to match. The comparison stops before the terminating '\0'.
For example, if we search for the section named ".eh_frame", we may
get the section named ".eh_frame_hdr".
Instead, check that the section name section has enough space to store
the complete name with its terminating '\0', and then use strcmp,
which will never examine more than strlen(NAME) + 1 bytes from the
section name section, regardless of its contents, and will require the
terminating '\0' to match as well.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@525 4c0a9323-5329-0410-9bdc-e9ce6186880e
This is preparation for adding support for reading Linux C++ exception
handling data's encoded pointers. The change should have no user-visible
effect; it simply expands the comments for dwarf2reader::ByteReader, and
regroups the member functions.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@522 4c0a9323-5329-0410-9bdc-e9ce6186880e
Without this patch, debugging information like the following will produce
FUNC records with no names, because the dumper (correctly) ignores the
DW_TAG_subprogram DIEs that lack DW_AT_low_pc/DW_AT_high_pc attributes, but
won't follow the DW_AT_abstract_origin link from the DIE that does have
code addresses to find its name.
<1><168>: Abbrev Number: 5 (DW_TAG_class_type)
<169> DW_AT_name : Foo
<2><183>: Abbrev Number: 7 (DW_TAG_subprogram)
<185> DW_AT_name : Foo
<18b> DW_AT_declaration : 1
<1><1b7>: Abbrev Number: 12 (DW_TAG_subprogram)
<1b8> DW_AT_specification: <0x183>
<1bc> DW_AT_inline : 2 (declared as inline but ignored)
<1><1dc>: Abbrev Number: 16 (DW_TAG_subprogram)
<1dd> DW_AT_abstract_origin: <0x1b7>
<1e1> DW_AT_low_pc : 0x8048578
<1e5> DW_AT_high_pc : 0x8048588
a=dmuir, r=jimblandy
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@520 4c0a9323-5329-0410-9bdc-e9ce6186880e
Yes, classes are useful. But that doesn't mean that every function has
to gratuitously become a member function. The Google C++ Style Guide
does not require this silliness, since the function is in the
google_breakpad namespace anyway.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@519 4c0a9323-5329-0410-9bdc-e9ce6186880e
This also includes some comments I promised Cary Coutant I'd write
about the appropriateness of processing attributes in EndAttributes
calls.
The Google C++ Style Guide requires each file to have an author notice
and a comment explaining the file's general purpose. For the record, I
don't think putting an author notice on the files is a good idea; it's
odd to have the original author retain prominence even if the file has
been heavily edited by others; the version control system answers this
question more accurately. This is only for Style Guide compliance. The
Apache group decided to discourage author annotations, partially for
these reasons:
http://mail-archives.apache.org/mod_mbox/jakarta-jmeter-dev/200402.mbox/%3C4039F65E.7020406@atg.com%3E
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@518 4c0a9323-5329-0410-9bdc-e9ce6186880e
We've gotten mixed advice from the lawyery types about whether this
matters. But it's easy enough to do.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@517 4c0a9323-5329-0410-9bdc-e9ce6186880e
This looks a little odd right now, since ParseStackInfo has only one
alternative to handle, but I think breaking this out should make the
subsequent addition of STACK CFI record support easier to review.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@514 4c0a9323-5329-0410-9bdc-e9ce6186880e
Rename BasicSourceLineResolver::Module::StackInfoTypes to
WindowsFrameInfoTypes. This enum really describes the forms of
Windows-specific stack unwinding data (STACK WIN records), and its
name should reflect that, especially since we'll be adding support for
other kinds of stack walking information.
The 'stack' -> 'frame' shift matches the naming of the
WindowsFrameInfo type.
Similarly, rename BasicSourceLineResolver::Module::stack_info_ to
windows_frame_info_.
Do similar renamings in basic_source_line_resolver_unittest.cc.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@513 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch moves the code for finding caller frames using STACK WIN
data and the code to do so using the traditional frame layout (%ebp
points at saved %ebp, pushed just after return address) into their own
functions. In addition to making things a little clearer, this is
preparation for adding support for STACK CFI records into the mix.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@512 4c0a9323-5329-0410-9bdc-e9ce6186880e
This adds an EvaluateForValue member function to PostfixEvaluator, and
along with appropriate unit tests.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@511 4c0a9323-5329-0410-9bdc-e9ce6186880e
The Google C++ Style Guide requires all parameters passed by reference
to be labeled 'const', and says that pointers should be used for
output arguments. This patch brings google_breakpad::StackwalkerX86
into line.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@510 4c0a9323-5329-0410-9bdc-e9ce6186880e
In order to be able to treat any MemoryRegion as const, the accessor
functions need to be declared this-const, which means annotations on
all the subclasses, etc. etc.
Since MinidumpMemoryRegion fills its memory_ member on demand, that
member needs to be marked 'mutable', but this is exactly the sort of
situation the 'mutable' keyword was intended for, so that seems all
right.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@509 4c0a9323-5329-0410-9bdc-e9ce6186880e
At the moment, StackwalkerX86::GetCallerFrame doesn't save the
WindowsFrameInfo that it finds for a frame unless it successfully
constructs the caller frame. This means that the windows_frame_info
field of the last frame on the stack is left unset, even when that
frame does have windows unwinding information.
This is not user-visible behavior, so it doesn't matter, but it is a
blemish on the interface, and unit tests (added in a later patch)
expect it.
This patch saves the information in the frame as soon as we find it.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@508 4c0a9323-5329-0410-9bdc-e9ce6186880e
This extends the ElfArchitecture function to recognize the
architectures it seemed to me that breakpad was most likely to see.
Also: the dumper has historically not provided very helpful error
messages. This patch adds a few that were convenient, but we should do
an audit for this.
a=jimblandy, r=ted.mielczarek
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@507 4c0a9323-5329-0410-9bdc-e9ce6186880e
The Google C++ Style Guide says that members of structures needn't
have names ending in underscores. The structure types in
google_breakpad::Module don't follow this rule.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@505 4c0a9323-5329-0410-9bdc-e9ce6186880e
This patch moves the ReadInitialFunction from dwarf2reader.cc, where
it was a static function, to being a member function of
google_breakpad::ByteReader.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@504 4c0a9323-5329-0410-9bdc-e9ce6186880e
In r480, I botched the change to make the comparisons that decide
whether an address falls within a function's range safe from overflow.
The original code said:
address >= function_base && address < function_base + function_size
which is fine unless the function abuts the end of the address space,
in which case the addition overflows and you get a false negative.
My change subtracted function_size from both sides of the latter
comparison, which is meaning-preserving in true math, and gets you:
address >= function_base && address - function_size < function_base
This not only reads strangely, but also still overflows if
function_size is greater than address. That's rare, but I've added a
case to the unit tests that checks it.
My intent had been to replace the addition which could overflow with a
subtraction that was known not to overflow, namely:
address >= function_base && address - function_base < function_size
This is equivalent to the original in true math, and because of the
first comparison, we know the subtraction won't underflow in MemAddr
math.
The patch includes similar fixes to the public symbol lookup code, and
to FindWindowsFrameInfo, which was the only other function affected by
r480.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@503 4c0a9323-5329-0410-9bdc-e9ce6186880e
Having NDEBUG be the default has wasted my time more often than I'm
proud to admit. There are no expensive asserts in the Linux symbol
dumper.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@502 4c0a9323-5329-0410-9bdc-e9ce6186880e
RangeMaps use the range's upper end as the key in the underlying map,
but RetrieveNearestRange was treating the key as the lower end.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@501 4c0a9323-5329-0410-9bdc-e9ce6186880e
This adds DWARF support to the Breakpad Linux dumper. This is
implemented as two handler classes: google_breakpad::DwarfCUToModule
accepts data from dwarf2reader::CompilationUnit, and
google_breakpad::DwarfLineToModule accepts data from a
dwarf2reader::LineInfo, each populating a google_breakpad::Module with
the results. Behaviors specific to particular source languages are
handled by instances of a new class, google_breakpad::Language.
An input executable may contain both STABS and DWARF debugging
information: the dumper automatically recognizes what sorts of
information are available, and integrates the data into a single
output file.
All classes have unit tests, providing line and branch coverage of all
interesting code. Unit tests are written using the Google C++ Testing
Framework, and the Google C++ Mocking Framework where appropriate.
a=jimblandy, r=ccoutant
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@497 4c0a9323-5329-0410-9bdc-e9ce6186880e
dwarf2reader::CompilationUnit is a simple and direct parser for DWARF
data, but its handler interface is not convenient to use. In
particular, the same handler object receives data about all DIEs
processed. One can't use distinct classes to separate the information
needed to handle different kinds of data.
This patch defines a new adapter type, dwarf2reader::DIEHandler, which
implements the existing DWARF parser's handler interface, given a
handler written to a more comfortable, object-orient interface. The
comments in dwarf2diehandler.h provide more detail.
a=jimblandy, r=ccoutant
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@495 4c0a9323-5329-0410-9bdc-e9ce6186880e
Breakpad's DWARF line number info parser provides a code address,
file, and line number for each code/source pairing, but doesn't
provide the length of the machine code. This makes that change, as
discussed in the following thread:
http://groups.google.com/group/google-breakpad-dev/browse_thread/thread/ed8d2fde79319368p
This patch also makes the corresponding changes to the functioninfo.cc
module, used by the Mac dumper. This patch has no effect on the Mac
dumper's output.
a=jimblandy, r=ccoutant
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@494 4c0a9323-5329-0410-9bdc-e9ce6186880e
The DWARF specification specifices which names the sections containing
DWARF information should have. OSX uses slightly different names. This
patch changes the DWARF reader to look for the sections under both
sets of names.
a=jimblandy, r=ccoutant
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@493 4c0a9323-5329-0410-9bdc-e9ce6186880e
At the moment, the StackWalker GetCallerFrame member function expects
a vector of WindowsFrameInfo structures, even though WindowsFrameInfo
is only used or useful on one one implementation (StackWalkerX86).
This patch changes StackWalker::GetCallerFrame to no longer expect the
WindowsFrameInfo structures, and changes all implementations to match.
In particular, StackWalkerX86 is changed to find the WindowsFrameInfo
data itself, and store a pointer to whatever it got in the StackFrame
object itself (which is really a StackFrameX86).
To allow GetCallerFrame implementations to look up stack walking data,
StackWalker::resolver_ needs to be made protected, not private.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@491 4c0a9323-5329-0410-9bdc-e9ce6186880e
The stabs reading code in google-breakpad incorrectly assumes that the
stabs data is a single compilation unit. Specifically, it ignores
N_UNDF stabs and assumes that all string indices are relative to the
beginning of the .stabstr section.
This is true when linking with the GNU linker by default, because the
GNU linker optimizes stabs debug info. The gold linker does not do
this optimization. It can be disabled when using the GNU linker with
the --traditional-format command line option.
For more details of the problem, see:
http://sourceware.org/bugzilla/show_bug.cgi?id=10338http://code.google.com/p/google-breakpad/issues/detail?id=359
This patch adds unit tests that reproduce the failure, and fixes the
stabs parser.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@490 4c0a9323-5329-0410-9bdc-e9ce6186880e
This adds a new variable, TEST_WRAPPER, to src/tools/linux/dump_syms.
Comments in the patch provide details.
This patch also moves the public variable section to sit after the
public phony targets.
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@486 4c0a9323-5329-0410-9bdc-e9ce6186880e
Add a new member function to dwarf2reader::Dwarf2Handler,
ProcessAttributeReference, for reporting attribute values that are
references to other DIEs. This handler member function always receives
an absolute offset (that is, relative to the start of the .debug_info
section, not to the start of the compilation unit), regardless of the
form the attribute uses. (Some forms are CU-relative, some are
absolute.)
a=jimblandy, r=nealsid
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@482 4c0a9323-5329-0410-9bdc-e9ce6186880e
src/processor/minidump.cc:1067: warning: format ‘%llx’ expects type ‘long long unsigned int’, but argument 3 has type ‘unsigned int’
src/processor/stackwalker_arm.cc:83: warning: unused variable ‘last_frame’
src/processor/minidump_stackwalk.cc:163: warning: ‘trust_name’ may be used uninitialized in this function
a=jimblandy, r=ted.mielczarek
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@481 4c0a9323-5329-0410-9bdc-e9ce6186880e
At the moment, FillSourceLineInfo returns Windows DIA-based stack
walking data. In addition to being ugly, this makes it difficult to
provide access to DWARF CFI-based stack walking data in a symmetrical
way.
This patch changes FillSourceLineInfo to do the single job its name
suggests, and adds a second member function to
SourceLineResolverInterface to retrieve Windows DIA stack walking
information. A sibling member function will provide access to DWARF
CFI stack walking data.
a=jimblandy, r=mmentovai
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@480 4c0a9323-5329-0410-9bdc-e9ce6186880e
