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* Don't assume little endian in StreamReader / StreamWriter.Zachary Turner2017-02-1815-152/+75
| | | | | | | In an effort to generalize this so it can be used by more than just PDB code, we shouldn't assume little endian. llvm-svn: 295525
* [pdb] Add the ability to resolve TypeServer PDBs.Zachary Turner2017-02-169-9/+213
| | | | | | | | | | | | | | Some PDBs or object files can contain references to other PDBs where the real type information lives. When this happens, all type indices in the original PDB are meaningless because their records are not there. With this patch we add the ability to pull type info from those secondary PDBs. Differential Revision: https://reviews.llvm.org/D29973 llvm-svn: 295382
* Add an additional set of braces to deal with subobject initialization.Eric Christopher2017-02-101-1/+1
| | | | llvm-svn: 294674
* Fix build break from r294633.Adrian McCarthy2017-02-091-3/+3
| | | | llvm-svn: 294642
* Introduce NativeRawSymbol for PDB reading.Adrian McCarthy2017-02-092-0/+701
| | | | | | | | | | This is a stub for a new concrete implementation of IPDBRawSymbol. Nothing uses this uses this implementation yet. My plan is to locally switch lldb-pdbdump from the DIA reader to the Native one and flesh out the implementations of these method stubs in the order they're needed. llvm-svn: 294633
* [MC] Fix some Clang-tidy modernize and Include What You Use warnings in ↵Eugene Zelenko2017-02-092-17/+38
| | | | | | | | SubtargetFeature; other minor fixes (NFC). Same changes in files affected by reduced SubtargetFeature.h dependencies. llvm-svn: 294548
* Get function start line number from DWARF infoDavid Blaikie2017-02-063-12/+35
| | | | | | | | | | | | | | | DWARF info contains info about the line number at which a function starts (DW_AT_decl_line). This patch creates a function to look up the start line number for a function, and returns it in DILineInfo when looking up debug info for a particular address. Patch by Simon Que! Reviewed By: dblaikie Differential Revision: https://reviews.llvm.org/D27962 llvm-svn: 294231
* Properly parse the TypeServer2 record.Zachary Turner2017-02-036-25/+57
| | | | llvm-svn: 294046
* Re-submit r293820: Return Error instead of bool from mergeTypeStreams().Rui Ueyama2017-02-021-17/+21
| | | | llvm-svn: 293847
* Revert r293820: Return Error instead of bool from mergeTypeStreams().Rui Ueyama2017-02-011-21/+17
| | | | | | It broke buildbots. llvm-svn: 293824
* Return Error instead of bool from mergeTypeStreams().Rui Ueyama2017-02-011-17/+21
| | | | | | | | | | Previously, mergeTypeStreams returns only true or false, so it was impossible to know the reason if it failed. This patch changes the function signature so that it returns an Error object. Differential Revision: https://reviews.llvm.org/D29362 llvm-svn: 293820
* [pdb] Add a new command for analyzing hash collisions.Zachary Turner2017-02-011-0/+4
| | | | | | | | | | This introduces the `analyze` subcommand. For now there is only one option, to analyze hash collisions in the type streams. In the future, however, we could add many more things here, such as performing size analyses, compacting, and statistics about the type of records etc. llvm-svn: 293795
* Add a verbose/human readable mode to llvm-symbolizer to investigate ↵David Blaikie2017-01-311-2/+10
| | | | | | | | | | discriminators and other line table/backtrace features Patch by Simon Que! Differential Revision: https://reviews.llvm.org/D29094 llvm-svn: 293697
* Cleanup dump() functions.Matthias Braun2017-01-281-1/+1
| | | | | | | | | | | | | | | | | | We had various variants of defining dump() functions in LLVM. Normalize them (this should just consistently implement the things discussed in http://lists.llvm.org/pipermail/cfe-dev/2014-January/034323.html For reference: - Public headers should just declare the dump() method but not use LLVM_DUMP_METHOD or #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP) - The definition of a dump method should look like this: #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP) LLVM_DUMP_METHOD void MyClass::dump() { // print stuff to dbgs()... } #endif llvm-svn: 293359
* NFC: Rename PDB_ReaderType::Raw to Native for consistency with the ↵Adrian McCarthy2017-01-271-2/+2
| | | | | | NativeSession rename. llvm-svn: 293235
* NFC: Rename (PDB) RawSession to NativeSessionAdrian McCarthy2017-01-2526-176/+188
| | | | | | | | This eliminates one overload on the term Raw. Differential Revision: https://reviews.llvm.org/D29098 llvm-svn: 293104
* [pdb] Correctly parse the hash adjusters table from TPI stream.Zachary Turner2017-01-251-9/+6
| | | | | | | | | | | | | This is not a list of pairs, it is a hash table data structure. We now correctly parse this out and dump it from llvm-pdbdump. We still need to understand the conditions that lead to a type getting an entry in the hash adjuster table. That will be done in a followup investigation / patch. Differential Revision: https://reviews.llvm.org/D29090 llvm-svn: 293090
* [pdb] Write the Named Stream mapping to Yaml and binary.Zachary Turner2017-01-204-12/+47
| | | | | | Differential Revision: https://reviews.llvm.org/D28919 llvm-svn: 292665
* [pdb] Merge NamedStreamMapBuilder and NamedStreamMap.Zachary Turner2017-01-206-71/+69
| | | | | | | | | | | While the builder pattern has proven useful for certain other larger types, in this case it was hampering the ability to use the data structure, as for runtime access we need a map that we can efficiently read from and write to. So the two are merged into a single data structure that can efficiently be read to, written from, deserialized from bytes, and serialized to bytes. llvm-svn: 292664
* [PDB] Rename some files to be more intuitive.Zachary Turner2017-01-208-44/+44
| | | | llvm-svn: 292663
* [DWARF] [ObjectYAML] Adding APIs for unittestingChris Bieneman2017-01-201-34/+46
| | | | | | | | | | | | Summary: This patch adds some new APIs to enable using the YAML DWARF representation in unit tests. The most basic new API is DWARFYAML::EmitDebugSections which converts a YAML string into a series of owned MemoryBuffer objects stored in a StringMap. The string map can then be used to construct a DWARFContext for parsing in place of an ObjectFile. Reviewers: dblaikie, clayborg Subscribers: mgorny, fhahn, jgosnell, aprantl, llvm-commits Differential Revision: https://reviews.llvm.org/D28828 llvm-svn: 292634
* Fix a few more build errors.Zachary Turner2017-01-191-0/+2
| | | | llvm-svn: 292538
* Fix incorrectly formed assert statement.Zachary Turner2017-01-191-1/+1
| | | | llvm-svn: 292537
* [pdb] Add HashTable data structure.Zachary Turner2017-01-194-170/+331
| | | | | | | | | | | | | | | | This was being parsed / serialized ad-hoc inside the code for a specific PDB stream. But this data structure is used in multiple ways / places within the PDB format. To be able to re-use it we need to raise this code out and make it more generic. In doing so, a number of bugs are fixed in the original implementation, and support is added for growing the hash table and deleting items from the hash table, which had either been omitted or incorrect implemented in the initial version. Differential Revision: https://reviews.llvm.org/D28715 llvm-svn: 292535
* PDB: Add a class to create the /names stream contents.Rui Ueyama2017-01-153-8/+105
| | | | | | | | | | This patch adds a new class NameHashTableBuilder which creates /names streams. This patch contains a test to confirm that a stream created by NameHashTableBuilder can be read by NameHashTable reader class. Differential Revision: https://reviews.llvm.org/D28707 llvm-svn: 292040
* Add a variant of DWARFDie::find() and DWARFDie::findRecursively() that takes ↵Greg Clayton2017-01-132-12/+33
| | | | | | | | | | a llvm::ArrayRef<dwarf::Attribute>. This allows us efficiently look for more than one attribute, something that is quite common in DWARF consumption. Differential Revision: https://reviews.llvm.org/D28704 llvm-svn: 291967
* Cleanup how DWARFDie attributes are accessed and decoded.Greg Clayton2017-01-134-89/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removed all DWARFDie::getAttributeValueAs*() calls. Renamed: Optional<DWARFFormValue> DWARFDie::getAttributeValue(dwarf::Attribute); To: Optional<DWARFFormValue> DWARFDie::find(dwarf::Attribute); Added: Optional<DWARFFormValue> DWARFDie::findRecursively(dwarf::Attribute); All decoding of Optional<DWARFFormValue> values are now done using the dwarf::to*() functions from DWARFFormValue.h: Old code: auto DeclLine = DWARFDie.getAttributeValueAsSignedConstant(DW_AT_decl_line).getValueOr(0); New code: auto DeclLine = toUnsigned(DWARFDie.find(DW_AT_decl_line), 0); This composition helps us since we can now easily do: auto DeclLine = toUnsigned(DWARFDie.findRecursively(DW_AT_decl_line), 0); This allows us to easily find attribute values in the current DIE only (the first new code above) or in any DW_AT_abstract_origin or DW_AT_specification Dies using the line above. Note that the code line length is shorter and more concise. Differential Revision: https://reviews.llvm.org/D28581 llvm-svn: 291959
* Apply clang-tidy's performance-unnecessary-value-param to LLVM.Benjamin Kramer2017-01-131-1/+1
| | | | | | | With some minor manual fixes for using function_ref instead of std::function. No functional change intended. llvm-svn: 291904
* Add the ability to iterate across all attributes in a DIE.Greg Clayton2017-01-132-1/+53
| | | | | | Differential Revision: https://reviews.llvm.org/D28386 llvm-svn: 291861
* [CodeView] Finish decoupling TypeDatabase from TypeDumper.Zachary Turner2017-01-114-539/+571
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously the type dumper itself was passed around to a lot of different places and manipulated in ways that were more appropriate on the type database. For example, the entire TypeDumper was passed into the symbol dumper, when all the symbol dumper wanted to do was lookup the name of a TypeIndex so it could print it. That's what the TypeDatabase is for -- mapping type indices to names. Another example is how if the user runs llvm-pdbdump with the option to dump symbols but not types, we still have to visit all types so that we can print minimal information about the type of a symbol, but just without dumping full symbol records. The way we did this before is by hacking it up so that we run everything through the type dumper with a null printer, so that the output goes to /dev/null. But really, we don't need to dump anything, all we want to do is build the type database. Since TypeDatabaseVisitor now exists independently of TypeDumper, we can do this. We just build a custom visitor callback pipeline that includes a database visitor but not a dumper. All the hackery around printers etc goes away. After this patch, we could probably even delete the entire CVTypeDumper class since really all it is at this point is a thin wrapper that hides the details of how to build a useful visitation pipeline. It's not a priority though, so CVTypeDumper remains for now. After this patch we will be able to easily plug in a different style of type dumper by only implementing the proper visitation methods to dump one-line output and then sticking it on the pipeline. Differential Revision: https://reviews.llvm.org/D28524 llvm-svn: 291724
* Remove all variants of DWARFDie::getAttributeValueAs...() that had ↵Greg Clayton2017-01-112-45/+10
| | | | | | | | | | parameters that specified default values. Now we only support returning Optional<> values and have changed all clients over to use Optional::getValueOr(). Differential Revision: https://reviews.llvm.org/D28569 llvm-svn: 291686
* [lib/Object] - Introduce Decompressor class.George Rimar2017-01-111-66/+12
| | | | | | | | | | | | | Decompressor intention is to reduce duplication of code. Currently LLD has own implementation of decompressor for compressed debug sections. This class helps to avoid it and share the code. LLD patch for reusing it is D28106 Differential revision: https://reviews.llvm.org/D28105 llvm-svn: 291675
* [CodeView/PDB] Rename a bunch of files.Zachary Turner2017-01-113-10/+7
| | | | | | | | | | | We were starting to get some name clashes between llvm-pdbdump and the common CodeView framework, so I took this opportunity to rename a bunch of files to more accurately describe their usage. This also helps in llvm-pdbdump to distinguish between different files and whether they are used for pretty dump mode or raw dump mode. llvm-svn: 291627
* [CodeView] Add TypeDatabase class.Zachary Turner2017-01-114-226/+441
| | | | | | | | | | | | | | This creates a centralized class in which to store type records. It stores types as an array of entries, which matches the notion of a type stream being a topologically sorted DAG. Logic to build up such a database was already being used in CVTypeDumper, so CVTypeDumper is now updated to to read from a TypeDatabase which is filled out by an earlier visitor in the pipeline. Differential Revision: https://reviews.llvm.org/D28486 llvm-svn: 291626
* DebugInfo: support for DW_FORM_implicit_constVictor Leschuk2017-01-103-9/+32
| | | | | | | | | | | | Support for DW_FORM_implicit_const DWARFv5 feature. When this form is used attribute value goes to .debug_abbrev section (as SLEB). As this form would break any debug tool which doesn't support DWARFv5 it is guarded by dwarf version check. Attempt to use this form with dwarf version <= 4 is considered a fatal error. Differential Revision: https://reviews.llvm.org/D28456 llvm-svn: 291599
* Add iterator support to DWARFDie to allow child DIE iteration.Greg Clayton2017-01-051-4/+1
| | | | | | Differential Revision: https://reviews.llvm.org/D28303 llvm-svn: 291194
* [cmake] Add LLVM_ENABLE_DIA_SDK option, and expose it in LLVMConfigMichal Gorny2017-01-022-4/+4
| | | | | | | | | | | | | | | Add an explicit LLVM_ENABLE_DIA_SDK option to control building support for DIA SDK-based debugging. Control its value to match whether DIA SDK support was found and expose it in LLVMConfig (alike LLVM_ENABLE_ZLIB). Its value is needed for LLDB to determine whether to run tests requiring DIA support. Currently it is obtained from llvm/Config/config.h; however, this file is not available for standalone builds. Following this change, LLDB will be modified to use the value from LLVMConfig. Differential Revision: https://reviews.llvm.org/D26255 llvm-svn: 290818
* [ObjectYAML] Support for DWARF debug_info sectionChris Bieneman2016-12-221-0/+12
| | | | | | | | | | This patch adds support for YAML<->DWARF for debug_info sections. This re-lands r290147, reverted in 290148, re-landed in r290204 after fixing the issue that caused bots to fail (thank you UBSan!), and reverted again in r290209 due to failures on big endian systems. After adding support for preserving endianness, this should be good now. llvm-svn: 290386
* Add the ability for DWARFDie objects to get the parent DWARFDie.Greg Clayton2016-12-213-36/+56
| | | | | | | | | | | | In order for the llvm DWARF parser to be used in LLDB we will need to be able to get the parent of a DIE. This patch adds that functionality by changing the DWARFDebugInfoEntry class to store a depth field instead of a sibling index. Using a depth field allows us to easily calculate the sibling and the parent without increasing the size of DWARFDebugInfoEntry. I tested llvm-dsymutil on a debug version of clang where this fully parses DWARF in over 1200 .o files to verify there was no serious regression in performance. Added a full suite of unit tests to test this functionality. Differential Revision: https://reviews.llvm.org/D27995 llvm-svn: 290274
* Revert "[ObjectYAML] Support for DWARF debug_info section"Chris Bieneman2016-12-201-12/+0
| | | | | | | | | | | This reverts commit r290204. Still breaking bots... In a meeting now, so I can't fix it immediately. Bot URL: http://lab.llvm.org:8011/builders/clang-s390x-linux/builds/2415 llvm-svn: 290209
* [ObjectYAML] Support for DWARF debug_info sectionChris Bieneman2016-12-201-0/+12
| | | | | | | | This patch adds support for YAML<->DWARF for debug_info sections. This re-lands r290147, after fixing the issue that caused bots to fail (thank you UBSan!). llvm-svn: 290204
* Revert "[ObjectYAML] Support for DWARF debug_info section"Chris Bieneman2016-12-201-12/+0
| | | | | | | | This reverts commit r290147. This commit is breaking a bot (http://lab.llvm.org:8011/builders/clang-atom-d525-fedora-rel/builds/621). I don't have time to investigate at the moment, so I'll revert for now. llvm-svn: 290148
* [ObjectYAML] Support for DWARF debug_info sectionChris Bieneman2016-12-201-0/+12
| | | | | | This patch adds support for YAML<->DWARF for debug_info sections. llvm-svn: 290147
* Make a function to correctly extract the DW_AT_high_pc given the low pc value.Greg Clayton2016-12-191-13/+22
| | | | | | | | DWARF 4 and later supports encoding the PC as an address or as as offset from the low PC. Clients using DWARFDie should be insulated from how to extract the high PC value. This function takes care of extracting the form value and looking for the correct form. Differential Revision: https://reviews.llvm.org/D27885 llvm-svn: 290131
* [PDB] Don't use the long typeDavid Majnemer2016-12-181-1/+1
| | | | | | | | Long is not the same size across a number of the platforms we support. Use unsigned int here instead, it is more appropriate because overflow/wrap-around is possible and, in this case, expected. llvm-svn: 290068
* [PDB] Don't reimplement CRC32David Majnemer2016-12-181-50/+5
| | | | | | | We already have a CRC32 implementation which is compatible with the PDB hash, reuse it. llvm-svn: 290054
* [PDB] Validate superblock addressesDavid Majnemer2016-12-181-0/+9
| | | | | | | - Validate the address of the block map. - Validate the address of the free block map. llvm-svn: 290053
* [DWARF] - Introduce DWARFDebugPubTable class for dumping pub* sections.George Rimar2016-12-173-41/+77
| | | | | | | | | | Patch implements parser of pubnames/pubtypes tables instead of static function used before. It is now should be possible to reuse it in LLD or other projects and clean up the duplication code. Differential revision: https://reviews.llvm.org/D27851 llvm-svn: 290040
* Delete unused file.Zachary Turner2016-12-172-2/+0
| | | | llvm-svn: 290021
* Resubmit "[CodeView] Hook CodeViewRecordIO for reading/writing symbols."Zachary Turner2016-12-165-145/+629
| | | | | | | The original patch was broken due to some undefined behavior as well as warnings that were triggering -Werror. llvm-svn: 290000
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