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* Basic handling of CIE version 4 in dwarf readingScott Graham2016-11-021-6/+42
| | | | | | | | | | | | | | | | | CIE looks like it's been emitted by clang since ~May 2015 [1]. This means that we didn't have any CFI because this parse aborted, which meant that all stack walks reverted to stack scanning. Allow expected values for address size and segment descriptor size through so that dump_syms can generate at least somewhat reasonable data. [1]: http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20150518/277292.html R=mark@chromium.org BUG=chromium:627529 Change-Id: I6dc92f51c4afd25c2adff92c09ccb8bb03bf9112 Reviewed-on: https://chromium-review.googlesource.com/406012 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Fixes up dump_syms build on OS X so it works with ELF.Dave MacLachlan2016-05-121-1/+1
| | | | | | | | | | | | | | | Adds elf.h header from glibc. Updates dwarf2reader.cc so it isn't comparing a unique_ptr against NULL. Moves from MacOS10.5 SDK to latest SDK for Xcode project. Moves from using gcc to clang for dump_syms tests. Disables warning about 'Missing Field In Structure Initializers' to temporarily work around https://bugs.chromium.org/p/google-breakpad/issues/detail?id=697. With this patch all tests form dump_syms pass again using Xcode 7.3 on Mac OS X 10.11. BUG= https://bugs.chromium.org/p/google-breakpad/issues/detail?id=696, https://bugs.chromium.org/p/google-breakpad/issues/detail?id=697 R=mark@chromium.org Review URL: https://codereview.chromium.org/1970903002 .
* Update to handle dsym files that end with a header.Dave MacLachlan2016-05-111-1/+3
| | | | | | | | | | dsym files generated by Xcode for swift (Xcode 7.3) end with a header, and the code did not handle that case. BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=689 R=ivanpe@chromium.org Review URL: https://codereview.chromium.org/1971793002 .
* Add debug fission support.Yunlian Jiang2016-05-041-26/+410
| | | | | | | | | | | | | | | | | | | | | This added debug fission support. It tries to find the dwp file from the debug dir /usr/lib/debug/*/debug and read symbols from them. Most of this patch comes from https://critique.corp.google.com/#review/52048295 and some fixes after that. The elf_reader.cc comes from TOT google code. I just removed some google dependency. Current problems from this patch 1: Some type mismatch: from uint8_t * to char *. 2: Some hack to find the .dwp file. (replace .debug with .dwp) BUG=chromium:604440 R=dehao@google.com, ivanpe@chromium.org Review URL: https://codereview.chromium.org/1884283002 .
* convert to uint8_t* for binary data to fix -Wnarrowing build errorsMike Frysinger2016-01-261-42/+44
| | | | | | | | | | | | | | | Newer gcc versions default to -Werror=narrowing when using newer C++ standards (which we do). This causes issues when we try to stuff a value like 0xea into a char -- the value is out of range for signed char bytes. That's when gcc throws an error: .../bytereader_unittest.cc: In member function 'virtual void Reader_DW_EH_PE_absptr4_Test::TestBody()': .../bytereader_unittest.cc:400:55: error: narrowing conversion of '234' from 'int' to 'char' inside { } [-Wnarrowing] BUG=chromium:579384 TEST=`make check` passes R=mark@chromium.org Review URL: https://codereview.chromium.org/1605153004 .
* Let breakpad build with -Wall on OS X and Linux.Lei Zhang2015-12-291-2/+4
| | | | | | | | | A=thakis@chromium.org Original Review: https://codereview.chromium.org/1550933002/ R=thakis@chromium.org Review URL: https://codereview.chromium.org/1554613002 .
* dump_syms: Fix handling of DW_FORM_ref_addr to work with DWARF 4mseaborn@chromium.org2014-12-031-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, dump_syms did not handle DW_FORM_ref_addr if it appeared in DWARF 4 debugging info. Also fix a DW_FORM_ref_addr case so that it doesn't fall through to the next switch case when assertions are disabled and the DWARF version isn't recognised. The following steps will reproduce the problem when using LLVM 3.4: cat <<END >example1.c int main() { return 0; } END cat <<END >example2.c void foo(int x) {} END clang -emit-llvm -g -c example1.c -o example1.bc clang -emit-llvm -g -c example2.c -o example2.bc llvm-link-3.4 example1.bc example2.bc -o combined.bc clang combined.bc -o executable ./google-breakpad/build/src/tools/linux/dump_syms/dump_syms executable When using LLVM bitcode linking in this way, LLVM's backend generates partially-merged DWARF debugging info in which some of the references to the "int" type go via "DW_FORM_ref_addr". Since PNaCl uses LLVM bitcode linking, this dump_syms failure occurs with nexes produced by the PNaCl toolchain. BUG= https://code.google.com/p/chromium/issues/detail?id=416368 TEST= see above R=mark@chromium.org, mcgrathr@chromium.org Review URL: https://breakpad.appspot.com/5744002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1408 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Adding support for mips.gordana.cmiljanovic@imgtec.com2013-09-111-6/+9
| | | | | | | | | | | | | Support for mips cpu is added to all breakapad targets including unittests. BUG=none TEST=unittests Review URL: https://breakpad.appspot.com/614002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1212 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Remove dead code.mark@chromium.org2012-12-121-1/+1
| | | | | | | | | Patch by Rafael Espindola <rafael.espindola@gmail.com> Review URL: http://breakpad.appspot.com/502003/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1091 4c0a9323-5329-0410-9bdc-e9ce6186880e
* This change allows compiling the google-breakpad code using a global ↵ivan.penkov@gmail.com2012-06-281-8/+10
| | | | | | ::string class instead of std::string. For more details take a look at common/using_std_string.h git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@974 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Accept version 3 .eh_frame unwinding data, as well as version 1.jimblandy2012-04-031-14/+8
| | | | | | | | a=michaelrmmiller r=jimblandy git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@947 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Add some missing #includested.mielczarek2012-02-151-0/+1
| | | | | | | P=Albert Zeyer R=ted at http://breakpad.appspot.com/289001 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@920 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Breakpad DWARF: Add support for DWARF 4 attribute forms.jimblandy2012-02-011-2/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Breakpad DWARF support: Remove extraneous breaks following returns in ↵jimblandy2012-02-011-44/+6
| | | | | | | | | | dwarf2reader.cc. a=jimb, r=ted.mielczarek Review URL: http://breakpad.appspot.com/343002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@911 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Remove "using namespace std" from dwarf2reader.h. Using-directives aremark@chromium.org2011-10-111-14/+15
| | | | | | | | | | | | | 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
* Breakpad DWARF Reader: Ignore padding at the end of the compilation unit.jimblandy2010-08-251-1/+5
| | | | | | | | | | | | | | | | | 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
* Breakpad DWARF parser: Don't use auto_ptr<stack<uint64> > where ↵jimblandy2010-08-251-9/+5
| | | | | | | | | | | | stack<uint64> would do. 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
* Add missing stdint.h include to fix compilation on newer GCC.ted.mielczarek2010-08-161-0/+1
| | | | git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@652 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Clean up build for 64 bit.dmaclach2010-07-191-17/+16
| | | | | | | | | | | Fix up some broken mac projects. Consolidate project settings in xcconfig files. http://breakpad.appspot.com/130001 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@627 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Breakpad: Avoid using the C++ <cfoo> headers.ted.mielczarek2010-06-251-4/+6
| | | | | | | | | | | | 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
* Breakpad DWARF CFI parser: Use the proper type for offsets in ↵ted.mielczarek2010-06-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | CallFrameInfo::Rule subclasses. 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
* Breakpad DWARF parser: correct comments regarding dynamic_cast.jimblandy2010-03-301-7/+14
| | | | | | | | | | | | | | | | 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
* Breakpad Linux dumper: Make changes requested by Neal Sidhwaney in issue 59002.jimblandy2010-03-291-19/+20
| | | | | | | | | | - 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 dumper: Parse the .eh_frame section.jimblandy2010-03-161-49/+310
| | | | | | | | | | | | | | | | | | | | | | | | 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
* Breakpad Linux dumper: Add support for dumping DWARF CFI as STACK CFI records.jimblandy2010-03-161-2/+1227
| | | | | | | | | | | | | | | | | | | | | | | 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
* Breakpad Linux dumper: Add file comments as required by the style guide.jimblandy2010-02-091-0/+3
| | | | | | | | | | | | | | | | | | | | | | 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
* Breakpad: Update copyright notice years on all files changed in 2010.jimblandy2010-02-091-1/+1
| | | | | | | | | | 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
* Breakpad DWARF parser: Add method to read DWARF "Initial length".jimblandy2010-01-281-25/+4
| | | | | | | | | | | 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
* Breakpad DWARF Reader: Change LineInfoHandler::AddLine to provide the line's ↵jimblandy2010-01-221-11/+32
| | | | | | | | | | | | | | | | | | | | length. 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
* Breakpad DWARF Reader: Also look for DWARF in sections with the proper names.jimblandy2010-01-221-6/+18
| | | | | | | | | | | | 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
* Google Breakpad DWARF reader: Add a handler function for DIE references.jimblandy2010-01-121-9/+36
| | | | | | | | | | | | | | | 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
* Issue 41004: Breakpad DWARF parser: fixes to compile without warnings under ↵jimblandy@gmail.com2009-12-151-1/+5
| | | | | | | | | GNU C++ 4.3.3. a=jimblandy, r=nealsid git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@450 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Issue 41003: Breakpad DWARF parser: Include <cstdio>, since we use itjimblandy@gmail.com2009-12-151-2/+2
| | | | | | | | | | | | | | | | src/common/dwarf/dwarf2reader.cc uses the old-fashioned <stdio.h> facilities to report errors. Ideally, we would add a 'Warning' message to the handler and make the client responsible for dealing with the errors, but this at least allows us to compile. Ubuntu 9.10 uses GCC 4.4.1; under older versions of GCC, this wasn't a problem, probably because stdio.h was being brought in inadvertently somewhere else. a=jimblandy, r=nealsid git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@449 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Issue 42002: Breakpad DWARF parser: avoid using <stdint.h> typejimblandy@gmail.com2009-12-151-2/+3
| | | | | | | | | | | | | | | | | | | | | It seems that a use of the <stdint.h> type uintptr_t has crept into the DWARF parser. This defines a workaround for the GNU compilers (tested on both Mac and Linux) which will raise an error if it doesn't work. My personal preference would be just to assume that the <stdint.h> header is available and use the standard types everywhere, but 1) that would be a large change, likely to make merges with the other branches of the DWARF parser more difficult, and 2) it would make it quite difficult to build under Microsoft Visual Studio, which doesn't have the <stdint.h> header; Microsoft has said they have no plans to provide it, as they would rather "focus their efforts" on C++ and .NET. a=jimblandy, r=nealsid git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@448 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Issue 39002: Breakpad DWARF parser: Move DWARF parser to ↵jimblandy@gmail.com2009-12-151-0/+820
platform-independent directory. Move the DWARF parser, and the functioninfo.cc DWARF consumer, from src/common/mac/dwarf to src/commmon/dwarf, so that it can be shared between the Mac and Linux dumpers. Fix up #include directives, multiple inclusion protection macros, and Xcode build files. a=jimblandy, r=nealsid git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@446 4c0a9323-5329-0410-9bdc-e9ce6186880e
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