Commit Graph

151 Commits

Author SHA1 Message Date
Luke Cheeseman 6db3a6a4a7 Revert r347490 as it breaks address sanitizer builds
llvm-svn: 347499
2018-11-23 17:13:06 +00:00
Luke Cheeseman d6dbd64104 Revert r343341
- Cannot reproduce the build failure locally and the build logs have
  been deleted.

llvm-svn: 347490
2018-11-23 11:01:47 +00:00
Paul Robinson 73766ccfda Make llvm-dwarfdump -name work on type units.
Differential Revision: https://reviews.llvm.org/D53672

llvm-svn: 345203
2018-10-24 21:51:55 +00:00
Jonas Devlieghere 3ef53e10d3 [dwarfdump] Make incompatibility between -diff and -verbose explicit.
Using -diff and -verbose together doesn't work today. We should audit
where these two options interact and fix them. In the meantime we error
out when the user try to specify both.

llvm-svn: 345084
2018-10-23 21:51:44 +00:00
Fangrui Song 2e83b2e9ee Use llvm::{all,any,none}_of instead std::{all,any,none}_of. NFC
llvm-svn: 344774
2018-10-19 06:12:02 +00:00
Adrian Prantl 8aa69e9927 llvm-dwarfdump: Extend --name to also search DW_AT_linkage_name.
rdar://problem/45132695

llvm-svn: 344079
2018-10-09 20:51:33 +00:00
Adrian Prantl d969abde1b Add missing space
llvm-svn: 344064
2018-10-09 18:12:04 +00:00
Luke Cheeseman 10981cc884 Revert r343317
- asan buildbots are breaking and I need to investigate the issue

llvm-svn: 343341
2018-09-28 17:01:50 +00:00
Luke Cheeseman 21f2955bb2 Reapply changes reverted by r343235
- Add fix so that all code paths that create DWARFContext
  with an ObjectFile initialise the target architecture in the context
- Add an assert that the Arch is known in the Dwarf CallFrameString method

llvm-svn: 343317
2018-09-28 13:37:27 +00:00
Luke Cheeseman 8e5676b1aa Revert r343192 as an ubsan build is currently failing
llvm-svn: 343235
2018-09-27 16:47:30 +00:00
Luke Cheeseman f6844b307a Reapply changes reverted in r343114, lldb patch to follow shortly
llvm-svn: 343192
2018-09-27 10:39:20 +00:00
Fangrui Song 0cac726a00 llvm::sort(C.begin(), C.end(), ...) -> llvm::sort(C, ...)
Summary: The convenience wrapper in STLExtras is available since rL342102.

Reviewers: dblaikie, javed.absar, JDevlieghere, andreadb

Subscribers: MatzeB, sanjoy, arsenm, dschuff, mehdi_amini, sdardis, nemanjai, jvesely, nhaehnle, sbc100, jgravelle-google, eraman, aheejin, kbarton, JDevlieghere, javed.absar, gbedwell, jrtc27, mgrang, atanasyan, steven_wu, george.burgess.iv, dexonsmith, kristina, jsji, llvm-commits

Differential Revision: https://reviews.llvm.org/D52573

llvm-svn: 343163
2018-09-27 02:13:45 +00:00
Luke Cheeseman 77aaa22081 Revert r343112 as CallFrameString API change has broken lldb builds
llvm-svn: 343114
2018-09-26 14:48:03 +00:00
Luke Cheeseman 03ad8812f5 [AArch64] - Return address signing dwarf support
- Reapply r343089 with a fix for DebugInfo/Sparc/gnu-window-save.ll

llvm-svn: 343112
2018-09-26 14:30:29 +00:00
Hans Wennborg 00b88bbcaf Revert r343089 "[AArch64] - Return address signing dwarf support"
This caused the DebugInfo/Sparc/gnu-window-save.ll test to fail.

> Functions that have signed return addresses need additional dwarf support:
> - After signing the LR, and before authenticating it, the LR register is in a
>   state the is unusable by a debugger or unwinder
> - To account for this a new directive, .cfi_negate_ra_state, is added
> - This directive says the signed state of the LR register has now changed,
>   i.e. unsigned -> signed or signed -> unsigned
> - This directive has the same CFA code as the SPARC directive GNU_window_save
>   (0x2d), adding a macro to account for multiply defined codes
> - This patch matches the gcc implementation of this support:
>   https://patchwork.ozlabs.org/patch/800271/
>
> Differential Revision: https://reviews.llvm.org/D50136

llvm-svn: 343103
2018-09-26 12:57:45 +00:00
Luke Cheeseman f755e687fc [AArch64] - Return address signing dwarf support
Functions that have signed return addresses need additional dwarf support:
- After signing the LR, and before authenticating it, the LR register is in a
  state the is unusable by a debugger or unwinder
- To account for this a new directive, .cfi_negate_ra_state, is added
- This directive says the signed state of the LR register has now changed,
  i.e. unsigned -> signed or signed -> unsigned
- This directive has the same CFA code as the SPARC directive GNU_window_save
  (0x2d), adding a macro to account for multiply defined codes
- This patch matches the gcc implementation of this support:
  https://patchwork.ozlabs.org/patch/800271/

Differential Revision: https://reviews.llvm.org/D50136

llvm-svn: 343089
2018-09-26 10:14:15 +00:00
Paul Robinson 96545db374 [DebugInfo/DWARF] Remove redundant iterator type. NFC
llvm-svn: 338759
2018-08-02 19:29:38 +00:00
Pavel Labath 4b896eb792 Fix "Optional" is ambiguous error on some bots
llvm-svn: 334580
2018-06-13 08:29:19 +00:00
Pavel Labath 4adc88ed25 [DWARF/AccelTable] Remove getDIESectionOffset for DWARF v5 entries
Summary:
This method was not correct for entries in DWO files as it assumed it
could just add up the CU and DIE offsets to get the absolute DIE offset.
This is not correct for the DWO files, as here the CU offset will
reference the skeleton unit, whereas the DIE offset will be the offset
in the full unit in the DWO file.

Unfortunately, this means that we are not able to determine the absolute
DIE offset using the information in the .debug_names section alone,
which means we have to offload some of this work to the users of this
class.

To demonstrate how this can be done, I've added/fixed the ability to
lookup entries using accelerator tables in DWO files in llvm-dwarfdump.
To make this happen, I've needed to make two extra changes in other
classes:
- made the DWARFContext method to lookup a CU based on the section
  offset public. I've needed this functionality to lookup a CU, and this
  seems like a useful thing in general.
- made DWARFUnit::getDWOId call extractDIEsIfNeeded. Before this, the
  DWOId was filled in only if the root DIE happened to be parsed
  before we called the accessor. Since the lazy parsing is supposed to
  happen under the hood, calling extractDIEsIfNeeded seems appropriate.

Reviewers: JDevlieghere, aprantl, dblaikie

Subscribers: mgrang, llvm-commits

Differential Revision: https://reviews.llvm.org/D48009

llvm-svn: 334578
2018-06-13 08:14:27 +00:00
Pavel Labath 59870af66f DWARFAcceleratorTable: fix equal_range iterators
Summary:
Both (Apple and DWARF5) implementations of the iterators had bugs which
resulted in crashes if one attempted to iterate through the accelerator
tables all the way.

For the Apple tables, the issue was that we did not clear the DataOffset
field when we reached the end, which made our iterator compare unequal
to the "end" iterator. For the Dwarf5 tables, the problem was that we
incremented the CurrentIndex pointer and then used the incremented
(possibly invalid) pointer to check whether we have reached the end of
the index list.

The reason these bugs went undetected is because their only user
(dwarfdump) only ever searched for the first match. Besides allowing us
to test this fix, changing llvm-dwarfdump --find to display all matches
seems like a good improvement (it makes the behavior consistent with the
--name option), so I change llvm-dwarfdump to do that.

The existing tests would be sufficient to test this fix with the new
llvm-dwarfdump behavior, but I add a special test that demonstrates that
the tool indeed displays multiple results. The find.test test needed to
be tweaked a bit as the tool now does not print the ".debug_info
contents" header (also consistent with how --name works).

Reviewers: JDevlieghere, aprantl, dblaikie

Subscribers: mgrang, llvm-commits

Differential Revision: https://reviews.llvm.org/D47543

llvm-svn: 333635
2018-05-31 08:47:00 +00:00
Jonas Devlieghere 27126f5260 [Support] Add color cl category.
This commit adds a color category so tools can document this option and
enables it for dwarfdump and dsymuttil.

rdar://problem/40498996

llvm-svn: 333176
2018-05-24 11:36:57 +00:00
Fangrui Song bd088560a8 [DebugInfo] Accept `S` in augmentation strings in CIE.
glibc libc.a(sigaction.o) compiled from sysdeps/unix/sysv/linux/x86_64/sigaction.c uses "zRS".

llvm-svn: 331738
2018-05-08 06:21:12 +00:00
Rui Ueyama 197194b6c9 Define InitLLVM to do common initialization all at once.
We have a few functions that virtually all command wants to run on
process startup/shutdown. This patch adds InitLLVM class to do that
all at once, so that we don't need to copy-n-paste boilerplate code
to each llvm command's main() function.

Differential Revision: https://reviews.llvm.org/D45602

llvm-svn: 330046
2018-04-13 18:26:06 +00:00
Pavel Labath 47c3472c41 [DebugInfo/AccelTable] Fix inconsistency in getDIEOffset implementations
Summary:
Even though the getDIEOffset offset function was common for the two
accelerator table implementations, it was doing two different things:
for the Apple tables, it was returning the die offset relative to the
start of the section, whereas for DWARF v5 tables, it was relative to
the start of the CU.

I resolve this by renaming the function to getDIESectionOffset to make
it obvious what the function returns, and change the DWARF
implementation to return the section offset. I also keep the CU-relative
accessor, but only in the DWARF implementation (there is no way to get
this information for the Apple tables). This was not caught by existing
tests because the hand-written inputs also erroneously used section
offsets instead of CU-relative ones.

While looking at this, I noticed that the Apple implementation was not
fully correct either -- the header contains a DIEOffsetBase field, which
should be added to offsets encoded with the DW_FORM_ref*** family, but
this was not being used. This went unnoticed because all current writers
set this field to zero anyway. I fix this as well and add a hand-written
test which demonstrates the issue.

Reviewers: JDevlieghere, dblaikie

Subscribers: aprantl, llvm-commits

Differential Revision: https://reviews.llvm.org/D44202

llvm-svn: 327116
2018-03-09 11:58:59 +00:00
Pavel Labath 725c035f54 Fix build breakage from r326003
- an ambiguous reference to Optional<T> in llvm-dwarfdump.cpp (fixed
  with an explicit prefix).
- a missing base class initialization in Entry copy constructor (fixed
  by using the implicitly default constructor, which is possible after
  some changes which were done during review).

llvm-svn: 326006
2018-02-24 00:54:31 +00:00
Pavel Labath d99072bc97 Implement equal_range for the DWARF v5 accelerator table
Summary:
This patch implements the name lookup functionality of the .debug_names
accelerator table and hooks it up to "llvm-dwarfdump -find". To make the
interface of the two kinds of accelerator tables more consistent, I've
created an abstract "DWARFAcceleratorTable::Entry" class, which provides
a consistent interface to access the common functionality of the table
entries (such as getting the die offset, die tag, etc.). I've also
modified the apple table to vend entries conforming to this interface.

Reviewers: JDevlieghere, aprantl, probinson, dblaikie

Subscribers: vleschuk, clayborg, echristo, llvm-commits

Differential Revision: https://reviews.llvm.org/D43067

llvm-svn: 326003
2018-02-24 00:35:21 +00:00
Jonas Devlieghere fba754a946 [dwarfdump] Normalize input path.
Before this patch, llvm-dwarfdump would reject `bundel.dSYM/` as input,
while `bundel.dSYM` was accepted. The reason is that `path::extension()`
returns an empty string for the former, leading to the argument not
being recognized as a dSYM bundle.

llvm-svn: 324621
2018-02-08 16:31:01 +00:00
Pavel Labath 3c9a918c9e [DebugInfo] Basic .debug_names dumping support
Summary:
This commit renames DWARFAcceleratorTable to AppleAcceleratorTable to free up
the first name as an interface for the different accelerator tables.
Then I add a DWARFDebugNames class for the dwarf5 table.

Presently, the only common functionality of the two classes is the dump()
method, because this is the only method that was necessary to implement
dwarfdump -debug-names; and because the rest of the
AppleAcceleratorTable interface does not directly transfer to the dwarf5
tables (the main reason for that is that the present interface assumes
the tables are homogeneous, but the dwarf5 tables can have different
keys associated with each entry).

I expect to make the common interface richer as I add more functionality
to the new class (and invent a way to represent it in generic way).

In terms of sharing the implementation, I found the format of the two
tables sufficiently different to frustrate any attempts to have common
parsing or dumping code, so presently the implementations share just low
level code for formatting dwarf constants.

Reviewers: vleschuk, JDevlieghere, clayborg, aprantl, probinson, echristo, dblaikie

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D42297

llvm-svn: 323638
2018-01-29 11:08:32 +00:00
Pavel Labath 9b36fd2541 Rename DwarfAcceleratorTable to AppleAcceleratorTable. NFC
This frees up the first name to be used as an base class for the
apple table and the dwarf5 .debug_names accel table. The rename  was
split off from D42297 (adding of debug_names support), which is still
under review.

llvm-svn: 323113
2018-01-22 13:17:23 +00:00
Jonas Devlieghere efb06387b7 [dwarfdump] Lookup needs to be an unsigned long long parameter.
Before this patch, dwarfdump's lookup parameter only accepts unsigned.
Given that for many current platforms the load address already exceeds
unsigned (e.g. arm64 w/ 0x100000000), dwarfdump needs an unsigned long
long parameter.

Patch by: Dr. Michael 'Mickey' Lauer <mickey@vanille-media.de>

llvm-svn: 321064
2017-12-19 09:45:26 +00:00
Michael Zolotukhin 62602a476a Remove redundant includes from tools.
llvm-svn: 320631
2017-12-13 21:31:10 +00:00
Adrian Prantl 01fb31cc89 dwarfdump: Add support for the --diff option.
--diff      Emit the output in a diff-friendly way by omitting offsets and
            addresses.

<rdar://problem/34502625>

llvm-svn: 320214
2017-12-08 23:32:47 +00:00
Adrian Prantl 5da51f435a llvm-dwarfdump: honor the --show-children option when dumping a specific DIE.
llvm-svn: 319271
2017-11-29 01:12:22 +00:00
Jonas Devlieghere f63ee64c4b Re-land "[dwarfdump] Add -lookup option"
Add the option to lookup an address in the debug information and print
out the file, function, block and line table details.

Differential revision: https://reviews.llvm.org/D38409

llvm-svn: 316619
2017-10-25 21:56:41 +00:00
Adrian Prantl 214babea60 Unify spelling.
llvm-svn: 315102
2017-10-06 20:24:35 +00:00
Adrian Prantl 59f30b8874 llvm-dwarfdump: Add an option to collect debug info quality metrics.
At the last LLVM dev meeting we had a debug info for optimized code
BoF session. In that session I presented some graphs that showed how
the quality of the debug info produced by LLVM changed over the last
couple of years. This is a cleaned up version of the patch I used to
collect the this data. It is implemented as an extension of
llvm-dwarfdump, adding a new --statistics option. The intended
use-case is to automatically run this on the debug info produced by,
e.g., our bots, to identify eyebrow-raising changes or regressions
introduced by new transformations that we could act on.

In the current form, two kinds of data are being collected:

- The number of variables that have a debug location versus the number
  of variables in total (this takes into account inlined instances of
  the same function, so if a variable is completely missing form only
  one instance it will be found).

- The PC range covered by variable location descriptions versus the PC
  range of all variables' containing lexical scopes.

The output format is versioned and extensible, so I'm looking forward
to both bug fixes and ideas for other data that would be interesting
to track.

Differential Revision: https://reviews.llvm.org/D36627

llvm-svn: 315101
2017-10-06 20:24:34 +00:00
Adrian Prantl e5b93f2e34 llvm-dwarfdump: implement the --regex option in combination with --name.
llvm-svn: 314855
2017-10-03 22:08:22 +00:00
Hans Wennborg ab2177edf7 Revert r314817 "[dwarfdump] Add -lookup option"
The test fails on Linux; see follow-up email on the llvm-commits list.

> Add the option to lookup an address in the debug information and print
> out the file, function, block and line table details.
>
> Differential revision: https://reviews.llvm.org/D38409

This also reverts the follow-up r314818:

> [test] Fix llvm-dwarfdump/cmdline.test
>
> Fixes test/tools/llvm-dwarfdump/cmdline.test

llvm-svn: 314825
2017-10-03 18:39:13 +00:00
Jonas Devlieghere f998c501b6 [dwarfdump] Add -lookup option
Add the option to lookup an address in the debug information and print
out the file, function, block and line table details.

Differential revision: https://reviews.llvm.org/D38409

llvm-svn: 314817
2017-10-03 17:10:21 +00:00
Adrian Prantl 46e006c497 llvm-dwarfdump: support the --ignore-case option.
llvm-svn: 314723
2017-10-02 21:21:09 +00:00
Jonas Devlieghere f91dc28b7b [dwarfdump] Add -show-form
This enables printing of DWARF form types after the DWARF attribute
types.

Differential revision: https://reviews.llvm.org/D38459

llvm-svn: 314685
2017-10-02 16:02:04 +00:00
Adrian Prantl 17d0bb9611 typos
llvm-svn: 314577
2017-09-30 00:31:15 +00:00
Adrian Prantl 61913a1ffa llvm-dwarfdump: implement the --name lookup option.
llvm-svn: 314576
2017-09-30 00:22:25 +00:00
Adrian Prantl fa1636137b Add comments
llvm-svn: 314574
2017-09-30 00:22:21 +00:00
Adrian Prantl f51e78017d llvm-dwarfdump: support .apple-namespaces in --find
llvm-svn: 314481
2017-09-29 00:52:33 +00:00
Adrian Prantl 714ee4d536 llvm-dwarfdump: add support for .apple_types in --find
llvm-svn: 314479
2017-09-29 00:33:22 +00:00
Adrian Prantl 367064abe4 try and appease gcc
llvm-svn: 314442
2017-09-28 18:27:00 +00:00
Adrian Prantl 99fdb9d927 llvm-dwarfdump: implement --find for .apple_names
This patch implements the dwarfdump option --find=<name>.  This option
looks for a DIE in the accelerator tables and dumps it if found.  This
initial patch only adds support for .apple_names to keep the review
small, adding the other sections and pubnames support should be
trivial though.

Differential Revision: https://reviews.llvm.org/D38282

llvm-svn: 314439
2017-09-28 18:10:52 +00:00
Reid Kleckner 2590edf615 Commit missing fixes for tool_file_rename
llvm-svn: 314051
2017-09-23 01:04:42 +00:00
Jonas Devlieghere 489604cd11 [dwarfdump] Fix ambiguous call to make_unique
Fix buildbot failures:
 - http://lab.llvm.org:8011/builders/lldb-x86-windows-msvc2015/builds/13153
 - http://lab.llvm.org:8011/builders/lld-x86_64-win7/builds/13566

llvm-svn: 313971
2017-09-22 09:38:52 +00:00