summaryrefslogtreecommitdiffstats
path: root/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
Commit message (Collapse)AuthorAgeFilesLines
...
* Revert r326932: [DebugInfo] Support DWARF expressions in eh_frameRui Ueyama2018-03-071-6/+6
| | | | | | This reverts commit rr326932 because it broke lld/test/ELF/eh-frame-hdr-augmentation.s. llvm-svn: 326953
* [DebugInfo] Support DWARF expressions in eh_frameRafael Auler2018-03-071-6/+6
| | | | | | | | | | | | | | | | | | This patch enhances DWARFDebugFrame with the capability of parsing and printing DWARF expressions in CFI instructions. It also makes FDEs and CIEs accessible to lib users, so they can process them in client tools that rely on LLVM. To make it self-contained with a test case, it teaches llvm-readobj to be able to dump EH frames and checks they are correct in a unit test. The llvm-readobj code is Maksim Panchenko's work (maksfb). Reviewers: JDevlieghere, espindola Reviewed By: JDevlieghere Differential Revision: https://reviews.llvm.org/D43313 llvm-svn: 326932
* [DebugInfo] Support DWARF v5 source code embedding extensionScott Linder2018-02-231-1/+3
| | | | | | | | | | | | | | | | | | | In DWARF v5 the Line Number Program Header is extensible, allowing values with new content types. In this extension a content type is added, DW_LNCT_LLVM_source, which contains the embedded source code of the file. Add new optional attribute for !DIFile IR metadata called source which contains source text. Use this to output the source to the DWARF line table of code objects. Analogously extend METADATA_FILE in Bitcode and .file directive in ASM to support optional source. Teach llvm-dwarfdump and llvm-objdump about the new values. Update the output format of llvm-dwarfdump to make room for the new attribute on file_names entries, and support embedded sources for the -source option in llvm-objdump. Differential Revision: https://reviews.llvm.org/D42765 llvm-svn: 325970
* [DWARF] Regularize dumping strings from line tables.Paul Robinson2018-02-051-2/+2
| | | | | | | | | | | | | | | | | The major visible difference here is that in line-table dumps, directory and file names are wrapped in double-quotes; previously, directory names got single quotes and file names were not quoted at all. The improvement in this patch is that when a DWARF v5 line table header has indirect strings, in a verbose dump these will all have their section[offset] printed as well as the name itself. This matches the format used for dumping strings in the .debug_info section. Differential Revision: https://reviews.llvm.org/D42802 llvm-svn: 324270
* [DWARF v5] Add limited support for dumping .debug_rnglistsJames Henderson2018-02-021-0/+27
| | | | | | | | | | | | | | | | | | | | | This change adds support to llvm-dwarfdump for dumping DWARF5 .debug_rnglists sections in regular ELF files. It is not complete, in that several DW_RLE_* encodings are currently not supported, but does dump the headert and the basic ranges for DW_RLE_start_length and DW_RLE_start_end encodings. Obvious next steps are to add verbose dumping that dumps the raw encodings, rather than the interpreted contents, to add -verify support of the section (e.g. to show that the correct number of offsets are specified), add dumping of .debug_rnglists.dwo, and to add support for other encodings. Reviewed by: dblaikie, JDevlieghere Differential Revision: https://reviews.llvm.org/D42481 llvm-svn: 324077
* [DWARFv5] Re-enable dumping a line table with no CU.Paul Robinson2018-01-291-5/+5
| | | | | | | | | | | r323476 added support for DW_FORM_line_strp, and incorrectly made that depend on having a DWARFUnit available. We shouldn't be tracking .debug_line_str in DWARFUnit after all. After this patch, I can do an NFC follow up and undo a bunch of the "plumbing" part of r323476. Differential Revision: https://reviews.llvm.org/D42609 llvm-svn: 323691
* [DebugInfo] Basic .debug_names dumping supportPavel Labath2018-01-291-5/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* [DWARFv5] Support DW_FORM_line_strp in llvm-dwarfdump.Paul Robinson2018-01-251-0/+13
| | | | | | | | | | | This form is like DW_FORM_strp, but points to .debug_line_str instead of .debug_str as the string section. It's intended to be used from the line-table header, and allows string-pooling of directory and filenames across compilation units. Differential Revision: https://reviews.llvm.org/D42553 llvm-svn: 323476
* Rename DwarfAcceleratorTable to AppleAcceleratorTable. NFCPavel Labath2018-01-221-7/+7
| | | | | | | | | 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
* dwarfdump: Match the --uuid output with that of Darwin dwarfdump.Adrian Prantl2018-01-051-1/+2
| | | | | | | | This option is widely used by scripts and there is no reason to break them. rdar://problem/36032398 llvm-svn: 321901
* [DWARF] Fix formatting bug with r321295. This fixes a MIPS buildbot failure.Wolfgang Pieb2017-12-221-1/+1
| | | | llvm-svn: 321330
* [DWARF v5] Rework of string offsets table readerWolfgang Pieb2017-12-211-57/+96
| | | | | | | | | | | | | Reorganizes the DWARF consumer to derive the string offsets table contribution's format from the contribution header instead of (incorrectly) from the unit's format. Reviewers: JDevliegehere, aprantl Differential Revision: https://reviews.llvm.org/D41146 llvm-svn: 321295
* [dwarfdump] Fix off-by-one bug in accelerator table extractor.Jonas Devlieghere2017-12-111-1/+2
| | | | | | | | | | | | | | | This fixes a bug where the verifier was complaining about empty accelerator tables. When the table is empty, its size is not a valid offset as it points after the end of the section. This patch also makes the extractor return llvm:Error instead of bool for better error reporting in the verifier. Differential revision: https://reviews.llvm.org/D41063 rdar://35932007 llvm-svn: 320399
* [DebugInfo] Bail out if making no progress dumping line tables.Paul Robinson2017-12-011-0/+4
| | | | llvm-svn: 319564
* [DwarfDump] -debug-line=offset applies to .dwo too.Paul Robinson2017-11-221-1/+3
| | | | llvm-svn: 318856
* [DebugInfo] Dump a .debug_line section, including line-number program,Paul Robinson2017-11-221-3/+2
| | | | | | | | without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
* [DWARFv5] Support DW_FORM_strp in the .debug_line.dwo header.Paul Robinson2017-11-221-32/+68
| | | | | | | | | | | As a side effect, the .debug_line section will be dumped in physical order, rather than in the order that compile units refer to their associated portions of the .debug_line section. These are probably always the same order anyway, and no tests noticed the difference. Differential Revision: https://reviews.llvm.org/D39854 llvm-svn: 318839
* [DWARFv5] Support DW_FORM_strp in the .debug_line header.Paul Robinson2017-11-071-4/+4
| | | | | | | | Supporting this form in .debug_line.dwo will be done as a follow-up. Differential Revision: https://reviews.llvm.org/D33155 llvm-svn: 317607
* Re-land "[dwarfdump] Add -lookup option"Jonas Devlieghere2017-10-251-1/+29
| | | | | | | | | 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
* Revert r314817 "[dwarfdump] Add -lookup option"Hans Wennborg2017-10-031-29/+1
| | | | | | | | | | | | | | | | | 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
* [dwarfdump] Add -lookup optionJonas Devlieghere2017-10-031-1/+29
| | | | | | | | | 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
* llvm-dwarfdump: support .apple-namespaces in --findAdrian Prantl2017-09-291-15/+13
| | | | llvm-svn: 314481
* llvm-dwarfdump: add support for .apple_types in --findAdrian Prantl2017-09-291-2/+6
| | | | llvm-svn: 314479
* llvm-dwarfdump: implement --find for .apple_namesAdrian Prantl2017-09-281-2/+19
| | | | | | | | | | | | 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
* [dwarfdump] Fix printing of .debug_line offset.Jonas Devlieghere2017-09-271-1/+1
| | | | | | | | | Fixes 32-bit buildbots: http://bb.pgr.jp/builders/test-llvm-i686-linux-RA/builds/542 http://lab.llvm.org:8011/builders/clang-cmake-thumbv7-a15/builds/11533 http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/11494 llvm-svn: 314291
* [dwarfdump] Add support for -debug-line=OFFSETJonas Devlieghere2017-09-271-0/+3
| | | | | | | | This patch adds support for passing an offset to -debug-line. Differential revision: https://reviews.llvm.org/D38240 llvm-svn: 314288
* [dwarfdump] Add support for -debug-loc=OFFSETJonas Devlieghere2017-09-271-2/+2
| | | | | | | | This patch adds support for passing an offset to -debug-loc. Differential revision: https://reviews.llvm.org/D38237 llvm-svn: 314286
* [dwarfdump] Skip 'stripped' sectionsJonas Devlieghere2017-09-261-0/+4
| | | | | | | | | | | | | | | | | | | When dsymutil generates the companion file, its strips all unnecessary sections by omitting their body and setting the offset in their corresponding load command to zero. One such section is the .eh_frame section, as it contains runtime information rather than debug information and is part of the __TEXT segment. When reading this section, we would just read the number of bytes specified in the load command, starting from offset 0 (i.e. the beginning of the file). Rather than trying to parse this obviously invalid section, dwarfdump now skips this. Differential revision: https://reviews.llvm.org/D38135 llvm-svn: 314208
* [dwarfdump] Add verbose output for .debug-line sectionJonas Devlieghere2017-09-211-2/+8
| | | | | | | | | | | | This patch adds dumping of line table instructions as well as the final state at each specified pc value in verbose mode. This is essentially the same as the default in Darwin's dwarfdump. Dumping the actual line table opcodes can be particularly useful for something like debugging a bad `.debug_line` section. Differential revision: https://reviews.llvm.org/D37971 llvm-svn: 313910
* llvm-dwarfdump support --debug-frame=<offset> and --eh-frame=<offset>Adrian Prantl2017-09-211-6/+4
| | | | llvm-svn: 313900
* llvm-dwarfdump: implement --recurse-depth=<N>Adrian Prantl2017-09-201-2/+4
| | | | | | | | | | This patch implements the Darwin dwarfdump option --recurse-depth=<N>, which limits the recursion depth when selectively printing DIEs at an offset. Differential Revision: https://reviews.llvm.org/D38064 llvm-svn: 313778
* dwarfdump/symbolizer: Avoid loading unneeded CUs from a DWPDavid Blaikie2017-09-191-3/+2
| | | | | | | | When symbolizing large binaries, parsing every CU in a DWP file is a significant performance penalty. Instead, use the index to only load the CUs that are needed. llvm-svn: 313659
* llvm-dwarfdump: use more efficient API (NFC)Adrian Prantl2017-09-181-4/+4
| | | | llvm-svn: 313573
* Fix indentation.Adrian Prantl2017-09-181-1/+1
| | | | llvm-svn: 313568
* llvm-dwarfdump: Sink the handling of ShowChildren into DWARFDie::dump(). NFC.Adrian Prantl2017-09-181-4/+2
| | | | llvm-svn: 313560
* [dwarfdump] Make .eh_frame an alias for .debug_frameJonas Devlieghere2017-09-181-8/+7
| | | | | | | | | | | | | | | | | | | | This patch makes the `.eh_frame` extension an alias for `.debug_frame`. Up till now it was only possible to dump the section using objdump, but not with dwarfdump. Since the two are essentially interchangeable, we dump whichever of the two is present. As a workaround, this patch also adds parsing for 3 currently unimplemented CFA instructions: `DW_CFA_def_cfa_expression`, `DW_CFA_expression`, and `DW_CFA_val_expression`. Because I lack the required knowledge, I just parse the fields without actually creating the instructions. Finally, this also fixes the typo in the `.debug_frame` section name which incorrectly contained a trailing `s`. Differential revision: https://reviews.llvm.org/D37852 llvm-svn: 313530
* llvm-dwarfdump: support a --show-children optionAdrian Prantl2017-09-161-2/+4
| | | | | | | This will print all children of a DIE when selectively printing only one DIE at a given offset. llvm-svn: 313464
* llvm-dwarfdump: Add support for -debug-types=<offset>.Adrian Prantl2017-09-161-12/+15
| | | | llvm-svn: 313463
* llvm-dwarfdump: Add support for -debug-info=<offset>.Adrian Prantl2017-09-151-45/+53
| | | | | | | | | This is the first of many commits that enable selectively dumping just one record from the debug info. This reapplies r313412 with some extra qualification to appease GCC and MSVC. llvm-svn: 313419
* Revert "llvm-dwarfdump: Add support for -debug-info=<offset>."Adrian Prantl2017-09-151-53/+45
| | | | | | This reverts commit r313412 because of a g++ incompatibility. llvm-svn: 313413
* llvm-dwarfdump: Add support for -debug-info=<offset>.Adrian Prantl2017-09-151-45/+53
| | | | | | | This is the first of many commits that enable selectively dumping just one record from the debug info. llvm-svn: 313412
* llvm-dwarfdump: Factor out the printing of the section header (NFC)Adrian Prantl2017-09-151-63/+67
| | | | llvm-svn: 313370
* llvm-dwarfdump: support dumping static archives.Adrian Prantl2017-09-141-3/+0
| | | | llvm-svn: 313272
* llvm-dwarfdump: automatically dump both regular and .dwo variant of sectionsAdrian Prantl2017-09-131-74/+91
| | | | | | | | | | | | Since users typically don't really care about the .dwo / non.dwo distinction, this patch makes it so dwarfdump --debug-<info,...> dumps .debug_info and (if available) also .debug_info.dwo. This simplifies the command line interface (I've removed all dwo-specific dump options) and makes the tool friendlier to use. Differential Revision: https://reviews.llvm.org/D37771 llvm-svn: 313207
* llvm-dwarfdump: support dumping UUIDs of Mach-O binaries.Adrian Prantl2017-09-131-0/+28
| | | | | | | This is a feature supported by Darwin dwarfdump. UUIDs are used to associate executables with their .dSYM bundles. llvm-svn: 313165
* [dwarfdump] Rename Brief to Verbose in DIDumpOptionsJonas Devlieghere2017-09-131-6/+6
| | | | | | | | | | | This patches renames "brief" to "verbose" in de DIDumpOptions and inverts the logic to match the new behavior where brief is the default. Changing the default value uncovered some bugs related to the DIDumpOptions not being propagated and have been fixed as well. Differential revision: https://reviews.llvm.org/D37745 llvm-svn: 313139
* llvm-dwarfdump: Replace -debug-dump=sect option with individual options.Adrian Prantl2017-09-111-33/+33
| | | | | | | | | | | | | | | | | | | | | | As discussed on llvm-dev in http://lists.llvm.org/pipermail/llvm-dev/2017-September/117301.html this changes the command line interface of llvm-dwarfdump to match the one used by the dwarfdump utility shipping on macOS. In addition to being shorter to type this format also has the advantage of allowing more than one section to be specified at the same time. In a nutshell, with this change $ llvm-dwarfdump --debug-dump=info $ llvm-dwarfdump --debug-dump=apple-objc becomes $ dwarfdump --debug-info --apple-objc Differential Revision: https://reviews.llvm.org/D37714 llvm-svn: 312970
* [dwarfdump] Pretty print location expressions and location listsReid Kleckner2017-08-291-2/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Based on Fred's patch here: https://reviews.llvm.org/D6771 I can't seem to commandeer the old review, so I'm creating a new one. With that change the locations exrpessions are pretty printed inline in the DIE tree. The output looks like this for debug_loc entries: DW_AT_location [DW_FORM_data4] (0x00000000 0x0000000000000001 - 0x000000000000000b: DW_OP_consts +3 0x000000000000000b - 0x0000000000000012: DW_OP_consts +7 0x0000000000000012 - 0x000000000000001b: DW_OP_reg0 RAX, DW_OP_piece 0x4 0x000000000000001b - 0x0000000000000024: DW_OP_breg5 RDI+0) And like this for debug_loc.dwo entries: DW_AT_location [DW_FORM_sec_offset] (0x00000000 Addr idx 2 (w/ length 190): DW_OP_consts +0, DW_OP_stack_value Addr idx 3 (w/ length 23): DW_OP_reg0 RAX, DW_OP_piece 0x4) Simple locations without ranges are printed inline: DW_AT_location [DW_FORM_block1] (DW_OP_reg4 RSI, DW_OP_piece 0x4, DW_OP_bit_piece 0x20 0x0) The debug_loc(.dwo) dumping in changed accordingly to factor the code. Reviewers: dblaikie, aprantl, friss Subscribers: mgorny, javed.absar, hiraditya, llvm-commits, JDevlieghere Differential Revision: https://reviews.llvm.org/D37123 llvm-svn: 312042
* Move helper classes into anonymous namespaces.Benjamin Kramer2017-08-201-1/+1
| | | | | | No functionality change intended. llvm-svn: 311288
* [llvm-dwarfdump] - Refactor section name/uniqueness gathering.George Rimar2017-08-151-0/+13
| | | | | | | | | | | As was requested in D36313 thread, with this patch section names and uniqueness calculated once, and not every time when a range is dumped. Differential revision: https://reviews.llvm.org/D36740 llvm-svn: 310923
OpenPOWER on IntegriCloud