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The line number table header was substantially revised in DWARF 5 and is
not fully supported by LLDB's current debug line implementation.
This patch replaces the LLDB debug line parser with its counterpart in
LLVM. This was possible because of the limited contact surface between
the code to parse the DWARF debug line section and the rest of LLDB.
We pay a small cost in terms of performance and memory usage. This is
something we plan to address in the near future.
Differential revision: https://reviews.llvm.org/D62570
llvm-svn: 368742
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llvm-svn: 368075
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lldb/lit/SymbolFile/DWARF/debug-types-expressions.test fails with msan.
This change fixes the issue by ensuring FileNameEntry::checksum is
always default-initialized.
llvm-svn: 362843
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A lot of comments in LLDB are surrounded by an ASCII line to delimit the
begging and end of the comment.
Its use is not really consistent across the code base, sometimes the
lines are longer, sometimes they are shorter and sometimes they are
omitted. Furthermore, it looks kind of weird with the 80 column limit,
where the comment actually extends past the line, but not by much.
Furthermore, when /// is used for Doxygen comments, it looks
particularly odd. And when // is used, it incorrectly gives the
impression that it's actually a Doxygen comment.
I assume these lines were added to improve distinguishing between
comments and code. However, given that todays editors and IDEs do a
great job at highlighting comments, I think it's worth to drop this for
the sake of consistency. The alternative is fixing all the
inconsistencies, which would create a lot more churn.
Differential revision: https://reviews.llvm.org/D60508
llvm-svn: 358135
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Most of these are Dump functions that are never called, but there
is one instance of entire unused classes (DWARFDebugMacinfo and
DWARFDebugMacinfoEntry) which are also unreferenced in the codebase).
Differential Revision: https://reviews.llvm.org/D59276
llvm-svn: 356490
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to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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Summary:
If we opened a file which was produced on system with different path
syntax, we would parse the paths from the debug info incorrectly.
The reason for that is that we would parse the paths as they were
native. For example this meant that on linux we would treat the entire
windows path as a single file name with no directory component, and then
we would concatenate that with the single directory component from the
DW_AT_comp_dir attribute. When parsing posix paths on windows, we would
at least get the directory separators right, but we still would treat
the posix paths as relative, and concatenate them where we shouldn't.
This patch attempts to remedy this by guessing the path syntax used in
each compile unit. (Unfortunately, there is no info in DWARF which would
give the definitive path style used by the produces, so guessing is all
we can do.) Currently, this guessing is based on the DW_AT_comp_dir
attribute of the compile unit, but this can be refined later if needed
(for example, the DW_AT_name of the compile unit may also contain some
useful info). This style is then used when parsing the line table of
that compile unit.
This patch is sufficient to make the line tables come out right, and
enable breakpoint setting by file name work correctly. Setting a
breakpoint by full path still has some kinks (specifically, using a
windows-style full path will not work on linux because the path will be
parsed as a linux path), but this will require larger changes in how
breakpoint setting works.
Reviewers: clayborg, zturner, JDevlieghere
Subscribers: aprantl, lldb-commits
Differential Revision: https://reviews.llvm.org/D56543
llvm-svn: 351328
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This patch improves the support of DWARF5.
Particularly the reporting of source code locations.
Differential revision: https://reviews.llvm.org/D51935
llvm-svn: 342153
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Always normalizing lldb_private::FileSpec paths will help us get a consistent results from comparisons when setting breakpoints and when looking for source files. This also removes a lot of complexity from the comparison routines. Modified the DWARF line table parser to use the normalized compile unit directory if needed.
Differential Revision: https://reviews.llvm.org/D45977
llvm-svn: 331049
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*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
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copies of code that parse line table prologues.
Also since we always read in the DWARF data or mmap it, we don't need to make a copy of the strings for the directories and file names, we can just store "cosnt char *" values. Every place that uses the prologues use them temporarily and then throw them away so no one is expecting the directory and filename strings to live longer than the parse functions.
llvm-svn: 251310
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outside of DWARFDebugInfoEntry of DWARFCompileUnit should use DWARFDIE only.
llvm-svn: 246172
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See http://reviews.llvm.org/D5533 for details.
Change by Tong Shen.
llvm-svn: 218641
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llvm-svn: 193794
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llvm-svn: 193792
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Review: http://llvm-reviews.chandlerc.com/D2007
llvm-svn: 193368
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Some versions of the GNU MIPS toolchain generate 64-Bit DWARF (even though
it isn't really necessary). This change adds support for the 64-Bit DWARF
format, but is not actually tested with >4GB of debug data.
Similar changes are in progress for llvm's version of DWARFDebugLine, in
review D1988.
llvm-svn: 193242
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the macros and just use C++11.
llvm-svn: 179805
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Major fixed to allow reading files that are over 4GB. The main problems were that the DataExtractor was using 32 bit offsets as a data cursor, and since we mmap all of our object files we could run into cases where if we had a very large core file that was over 4GB, we were running into the 4GB boundary.
So I defined a new "lldb::offset_t" which should be used for all file offsets.
After making this change, I enabled warnings for data loss and for enexpected implicit conversions temporarily and found a ton of things that I fixed.
Any functions that take an index internally, should use "size_t" for any indexes and also should return "size_t" for any sizes of collections.
llvm-svn: 173463
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llvm-svn: 157328
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Use the metadata in the dSYM bundle Info.plist to remap source paths when they keys are available.
llvm-svn: 152836
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Prepare LLDB to be built with C++11 by hiding all accesses to std::tr1 behind
macros that allows us to easily compile for either C++.
llvm-svn: 152698
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due to RTTI worries since llvm and clang don't use RTTI, but I was able to
switch back with no issues as far as I can tell. Once the RTTI issue wasn't
an issue, we were looking for a way to properly track weak pointers to objects
to solve some of the threading issues we have been running into which naturally
led us back to std::tr1::weak_ptr. We also wanted the ability to make a shared
pointer from just a pointer, which is also easily solved using the
std::tr1::enable_shared_from_this class.
The main reason for this move back is so we can start properly having weak
references to objects. Currently a lldb_private::Thread class has a refrence
to its parent lldb_private::Process. This doesn't work well when we now hand
out a SBThread object that contains a shared pointer to a lldb_private::Thread
as this SBThread can be held onto by external clients and if they end up
using one of these objects we can easily crash.
So the next task is to start adopting std::tr1::weak_ptr where ever it makes
sense which we can do with lldb_private::Debugger, lldb_private::Target,
lldb_private::Process, lldb_private::Thread, lldb_private::StackFrame, and
many more objects now that they are no longer using intrusive ref counted
pointer objects (you can't do std::tr1::weak_ptr functionality with intrusive
pointers).
llvm-svn: 149207
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llvm-svn: 139490
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Thanks Bruce!
llvm-svn: 123083
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llvm-svn: 105619
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