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2016-07-14[Object] Re-apply r275316 now that I have the corresponding LLD patch ready.Lang Hames1-4/+15
llvm-svn: 275361
2016-07-14[Object] Revert r275316, Archive::child_iterator changes, while I update lld.Lang Hames1-15/+4
Should fix the bots broken by r275316. llvm-svn: 275353
2016-07-13[Object] Change Archive::child_iterator for better interop with Error/Expected.Lang Hames1-4/+15
See http://reviews.llvm.org/D22079 Changes the Archive::child_begin and Archive::children to require a reference to an Error. If iterator increment fails (because the archive header is damaged) the iterator will be set to 'end()', and the error stored in the given Error&. The Error value should be checked by the user immediately after the loop. E.g.: Error Err; for (auto &C : A->children(Err)) { // Do something with archive child C. } // Check the error immediately after the loop. if (Err) return Err; Failure to check the Error will result in an abort() when the Error goes out of scope (as guaranteed by the Error class). llvm-svn: 275316
2016-06-28Finish cleaning up most of the error handling in libObject’s ↵Kevin Enderby1-1/+1
MachOUniversalBinary and its clients to use the new llvm::Error model for error handling. Changed getAsArchive() from ErrorOr<...> to Expected<...> so now all interfaces there use the new llvm::Error model for return values. In the two places it had if (!Parent) this is actually a program error so changed from returning errorCodeToError(object_error::parse_failed) to calling report_fatal_error() with a message. In getObjectForArch() added error messages to its two llvm::Error return values instead of returning errorCodeToError(object_error::arch_not_found) with no error message. For the llvm-obdump, llvm-nm and llvm-size clients since the only binary files in Mach-O Universal Binaries that are supported are Mach-O files or archives with Mach-O objects, updated their logic to generate an error when a slice contains something like an ELF binary instead of ignoring it. And added a test case for that. The last error stuff to be cleaned up for libObject’s MachOUniversalBinary is the use of errorOrToExpected(Archive::create(ObjBuffer)) which needs Archive::create() to be changed from ErrorOr<...> to Expected<...> first, which I’ll work on next. llvm-svn: 274079
2016-06-09Search for llvm-symbolizer binary in the same directory as argv[0], beforeRichard Smith1-1/+1
looking for it along $PATH. This allows installs of LLVM tools outside of $PATH to find the symbolizer and produce pretty backtraces if they crash. llvm-svn: 272232
2016-06-02[COFF] Expose the PE debug data directory and dump itReid Kleckner1-0/+7
This directory is used to find if there is a PDB associated with an executable. I plan to use this functionality to teach llvm-symbolizer whether it should use DIA or DWARF to symbolize a given DLL. Reviewers: majnemer Differential Revision: http://reviews.llvm.org/D20885 llvm-svn: 271539
2016-05-31Change llvm-objdump, llvm-nm and llvm-size when reporting an object file errorKevin Enderby1-3/+8
when the object is from a slice of a Mach-O Universal Binary use something like "foo.o (for architecture i386)" as part of the error message when expected. Also fixed places in these tools that were ignoring object file errors from MachOUniversalBinary::getAsObjectFile() when the code moved on to see if the slice was an archive. To do this MachOUniversalBinary::getAsObjectFile() and MachOUniversalBinary::getObjectForArch() were changed from returning ErrorOr<...> to Expected<...> then that was threaded up to its users. Converting these interfaces to Expected<> from ErrorOr<> does involve touching a number of places. To contain the changes for now the use of errorToErrorCode() is still used in two places yet to be fully converted. llvm-svn: 271332
2016-05-17Change llvm-objdump, llvm-nm and llvm-size when reporting an object file errorKevin Enderby1-6/+9
when the object is in an archive to use something like libx.a(foo.o) as part of the error message. Also changed llvm-objdump and llvm-size to be like llvm-nm and ignore non-object files in archives and not produce any error message. To do this Archive::Child::getAsBinary() was changed from ErrorOr<...> to Expected<...> then that was threaded up to its users. Converting this interface to Expected<> from ErrorOr<> does involve touching a number of places. To contain the changes for now the use of errorToErrorCode() is still used in one place yet to be fully converted. Again there some were bugs in the existing code that did not deal with the old ErrorOr<> return values.  So now with Expected<> since they must be checked and the error handled, I added a TODO and a comments for those. llvm-svn: 269784
2016-05-14[codeview] Add type stream merging prototypeReid Kleckner1-0/+15
Summary: This code is intended to be used as part of LLD's PDB writing. Until that exists, this is exposed via llvm-readobj for testing purposes. Type stream merging uses the following algorithm: - Begin with a new empty stream, and a new empty hash table that maps from type record contents to new type index. - For each new type stream, maintain a map from source type index to destination type index. - For each record, copy it and rewrite its type indices to be valid in the destination type stream. - If the new type record is not already present in the destination stream hash table, append it to the destination type stream, assign it the next type index, and update the two hash tables. - If the type record already exists in the destination stream, discard it and update the type index map to forward the source type index to the existing destination type index. Reviewers: zturner, ruiu Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D20122 llvm-svn: 269521
2016-05-04[llvm-readobj] Print MIPS .MIPS.options section contentSimon Atanasyan1-0/+6
.MIPS.options section specifies miscellaneous options to be applied to an object file. LLVM as well as modern versions of GNU tools emit the only type of the options - ODK_REGINFO. The patch teaches llvm-readobj to print details of the ODK_REGINFO and skip contents of other options. llvm-svn: 268478
2016-05-03Move llvm-readobj/StreamWriter to Support.Zachary Turner1-3/+4
We wish to re-use this from llvm-pdbdump, and it provides a nice way to print structured data in scoped format that could prove useful for many other dumping tools as well. Moving to support and changing name to ScopedPrinter to better reflect its purpose. llvm-svn: 268342
2016-04-11[llvm-readobj] Add ELF hash histogram printingHemant Kulkarni1-0/+7
Differential Revision: http://reviews.llvm.org/D18907 llvm-svn: 265967
2016-04-06Thread Expected<...> up from createMachOObjectFile() to allow llvm-objdump ↵Kevin Enderby1-3/+3
to produce a real error message Produce the first specific error message for a malformed Mach-O file describing the problem instead of the generic message for object_error::parse_failed of "Invalid data was encountered while parsing the file”.  Many more good error messages will follow after this first one. This is built on Lang Hames’ great work of adding the ’Error' class for structured error handling and threading Error through MachOObjectFile construction. And making createMachOObjectFile return Expected<...> . So to to get the error to the llvm-obdump tool, I changed the stack of these methods to also return Expected<...> : object::ObjectFile::createObjectFile() object::SymbolicFile::createSymbolicFile() object::createBinary() Then finally in ParseInputMachO() in MachODump.cpp the error can be reported and the specific error message can be printed in llvm-objdump and can be seen in the existing test case for the existing malformed binary but with the updated error message. Converting these interfaces to Expected<> from ErrorOr<> does involve touching a number of places. To contain the changes for now use of errorToErrorCode() and errorOrToExpected() are used where the callers are yet to be converted. Also there some were bugs in the existing code that did not deal with the old ErrorOr<> return values. So now with Expected<> since they must be checked and the error handled, I added a TODO and a comment: “// TODO: Actually report errors helpfully” and a call something like consumeError(ObjOrErr.takeError()) so the buggy code will not crash since needed to deal with the Error. Note there is one fix also needed to lld/COFF/InputFiles.cpp that goes along with this that I will commit right after this. So expect lld not to built after this commit and before the next one. llvm-svn: 265606
2016-03-01Fix typo. NFC.Tim Northover1-1/+1
llvm-svn: 262405
2016-02-10[llvm-readobj] Option to emit readelf like outputHemant Kulkarni1-8/+14
New option --elf-output-style=LLVM or GNU Enables -file-headers in readelf style when elf-output-style=GNU Differential revision: http://reviews.llvm.org/D14128 llvm-svn: 260430
2016-02-10Revert "[llvm-readobj] Option to emit readelf like output"Hemant Kulkarni1-14/+8
This reverts commit a58765909660a7195b32e0cc8c7476168b913750. llvm-svn: 260397
2016-02-10[llvm-readobj] Option to emit readelf like outputHemant Kulkarni1-8/+14
New option --elf-output-style=LLVM or GNU Enables -file-headers in readelf style when elf-output-style=GNU Differential revision: http://reviews.llvm.org/D14128 llvm-svn: 260391
2016-01-26[llvm-readobj] Add -elf-section-groups optionHemant Kulkarni1-10/+20
Adds a way to inspect SHT_GROUP sections in ELF objects. Displays signature, member sections of these sections. Differential revision: http://reviews.llvm.org/D16555 llvm-svn: 258845
2015-12-23[llvm-readobj] Use stderr and not stdout for error messages.Davide Italiano1-2/+2
llvm-svn: 256347
2015-12-16Reland "[llvm-readobj] Simplify usage of -codeview flag"Reid Kleckner1-0/+2
Relands r255790 with fixed tests. llvm-svn: 255793
2015-12-16Revert "[llvm-readobj] Simplify usage of -codeview flag"Reid Kleckner1-2/+0
This reverts commit r255790. llvm-svn: 255791
2015-12-16[llvm-readobj] Simplify usage of -codeview flagReid Kleckner1-0/+2
llvm-svn: 255790
2015-12-05[llvm-readobj] report_error() does not return, so we can simplify.Davide Italiano1-6/+2
llvm-svn: 254868
2015-12-04[llvm-readobj] reportError() never returns. Mark with the correct attribute.Davide Italiano1-1/+1
llvm-svn: 254752
2015-11-05Reapply r250906 with many suggested updates from Rafael Espindola.Kevin Enderby1-1/+4
The needed lld matching changes to be submitted immediately next, but this revision will cause lld failures with this alone which is expected. This removes the eating of the error in Archive::Child::getSize() when the characters in the size field in the archive header for the member is not a number. To do this we have all of the needed methods return ErrorOr to push them up until we get out of lib. Then the tools and can handle the error in whatever way is appropriate for that tool. So the solution is to plumb all the ErrorOr stuff through everything that touches archives. This include its iterators as one can create an Archive object but the first or any other Child object may fail to be created due to a bad size field in its header. Thanks to Lang Hames on the changes making child_iterator contain an ErrorOr<Child> instead of a Child and the needed changes to ErrorOr.h to add operator overloading for * and -> . We don’t want to use llvm_unreachable() as it calls abort() and is produces a “crash” and using report_fatal_error() to move the error checking will cause the program to stop, neither of which are really correct in library code. There are still some uses of these that should be cleaned up in this library code for other than the size field. The test cases use archives with text files so one can see the non-digit character, in this case a ‘%’, in the size field. These changes will require corresponding changes to the lld project. That will be committed immediately after this change. But this revision will cause lld failures with this alone which is expected. llvm-svn: 252192
2015-10-21Backing out commit r250906 as it broke lld.Kevin Enderby1-6/+1
llvm-svn: 250908
2015-10-21This removes the eating of the error in Archive::Child::getSize() when the ↵Kevin Enderby1-1/+6
characters in the size field in the archive header for the member is not a number. To do this we have all of the needed methods return ErrorOr to push them up until we get out of lib. Then the tools and can handle the error in whatever way is appropriate for that tool. So the solution is to plumb all the ErrorOr stuff through everything that touches archives. This include its iterators as one can create an Archive object but the first or any other Child object may fail to be created due to a bad size field in its header. Thanks to Lang Hames on the changes making child_iterator contain an ErrorOr<Child> instead of a Child and the needed changes to ErrorOr.h to add operator overloading for * and -> . We don’t want to use llvm_unreachable() as it calls abort() and is produces a “crash” and using report_fatal_error() to move the error checking will cause the program to stop, neither of which are really correct in library code. There are still some uses of these that should be cleaned up in this library code for other than the size field. Also corrected the code where the size gets us to the “at the end of the archive” which is OK but past the end of the archive will return object_error::parse_failed now. The test cases use archives with text files so one can see the non-digit character, in this case a ‘%’, in the size field. llvm-svn: 250906
2015-10-16[llvm-readobj] Teach ELFDumper about symbol versioning.Davide Italiano1-0/+8
Differential Revision: http://reviews.llvm.org/D13824 llvm-svn: 250575
2015-10-14[llvm-readobj/ELF] Print GNU Hash sectionIgor Kudrin1-0/+6
Add a new command line switch, -gnu-hash-table, to print the content of that section. Differential Revision: http://reviews.llvm.org/D13696 llvm-svn: 250291
2015-09-17[llvm-readobj] Fix another "time of check to time of use bug".Davide Italiano1-5/+0
It seems there's more copy-paste between tools than needed. llvm-svn: 247954
2015-09-09[llvm-readobj] MachO -- dump LinkerOptions load command.Davide Italiano1-0/+7
Example output: Linker Options { Size: 32 Count: 2 Strings [ Value: -framework Value: Cocoa ] } There were only two tests using this -- so I converted them as part of this commit rather than separately. Differential Revision: http://reviews.llvm.org/D12702 llvm-svn: 247106
2015-09-03[llvm-readobj] Dump MachO indirect symbols.Davide Italiano1-0/+7
Example output: File: <stdin> Format: Mach-O 32-bit i386 Arch: i386 AddressSize: 32bit Indirect Symbols { Number: 3 Symbols [ Entry { Entry Index: 0 Symbol Index: 0x4 } Entry { Entry Index: 1 Symbol Index: 0x0 } Entry { Entry Index: 2 Symbol Index: 0x1 } ] } Differential Revision: http://reviews.llvm.org/D12570 llvm-svn: 246789
2015-09-02[llvm-readobj] MachO: Dump segment command.Davide Italiano1-0/+7
Example output: File: <stdin> Format: Mach-O arm Arch: arm AddressSize: 32bit Segment { Cmd: LC_SEGMENT Name: Size: 260 vmaddr: 0x0 vmsize: 0x10 fileoff: 408 filesize: 408 maxprot: rwx initprot: rwx nsects: 3 flags: 0x0 } Differential Revision: http://reviews.llvm.org/D12542 llvm-svn: 246665
2015-08-31[llvm-readobj] Dump MachO Dysymtab command.Davide Italiano1-0/+8
Example output: File: <stdin> Format: Mach-O 64-bit x86-64 Arch: x86_64 AddressSize: 64bit Dysymtab { ilocalsym: 0 nlocalsym: 6 iextdefsym: 6 nextdefsym: 2 iundefsym: 8 nundefsym: 0 tocoff: 0 ntoc: 0 modtaboff: 0 nmodtab: 0 extrefsymoff: 0 nextrefsyms: 0 indirectsymoff: 0 nindirectsyms: 0 extreloff: 0 nextrel: 0 locreloff: 0 nlocrel: 0 } Differential Revision: http://reviews.llvm.org/D12496 llvm-svn: 246474
2015-08-31[llvm-readobj] Add pair of missing braces.Davide Italiano1-1/+2
This fixes a regression introduced in r246151. llvm-svn: 246453
2015-08-28llvm-readobj: Dump more info for COFF import libraries.Rui Ueyama1-6/+0
This patch teaches llvm-readobj to print out COFF import file header fields. llvm-svn: 246291
2015-08-28Re-apply r246276 - Object: Teach llvm-ar to create symbol table for COFF ↵Rui Ueyama1-0/+9
short import files This patch includes a fix for a llvm-readobj test. With this patch, the tool does no longer print out COFF headers for the short import file, but that's probably desirable because the header for the short import file is dummy. llvm-svn: 246283
2015-08-27[llvm-readobj] Add support for dumping MachO min version load command.Davide Italiano1-0/+6
Example output: File: <stdin> Format: Mach-O arm Arch: arm AddressSize: 32bit MinVersion { Cmd: LC_VERSION_MIN_IPHONEOS Size: 16 Version: 99.8.7 SDK: n/a } Differential Revision: http://reviews.llvm.org/D12373 llvm-svn: 246151
2015-08-21[llvm-readobj] Add support for MachO DataInCodeDataCommand.Davide Italiano1-0/+8
Example output: File: <stdin> Format: Mach-O arm Arch: arm AddressSize: 32bit DataInCode { Data offset: 300 Data size: 32 Data Regions [ DICE { Index: 0 Offset: 0 Length: 4 Kind: 1 } DICE { Index: 1 Offset: 4 Length: 4 Kind: 4 } DICE { Index: 2 Offset: 8 Length: 2 Kind: 3 } DICE { Index: 3 Offset: 10 Length: 1 Kind: 2 } ] } Differential Revision: http://reviews.llvm.org/D12084 llvm-svn: 245732
2015-08-07[llvm-readobj] Convert to range-loops.Davide Italiano1-4/+2
llvm-svn: 244300
2015-08-06Move to llvm-readobj code that is only used there.Rafael Espindola1-2/+2
lld might end up using a small part of this, but it will be in a much refactored form. For now this unblocks avoiding the full section scan in the ELFFile constructor. This also has a (very small) error handling improvement. llvm-svn: 244282
2015-07-24[llvm-reaobj] Display COFF-specific sections/tables only if the object is COFF.Davide Italiano1-9/+10
Just skip them otherwise. llvm-svn: 243086
2015-07-21Simplify printing the soname. NFC.Rafael Espindola1-14/+1
llvm-svn: 242786
2015-07-20Remove duplicated code.Rafael Espindola1-4/+4
Both ELFObjectFile and ELFFile had an implementation of getLoadName. llvm-svn: 242725
2015-07-20llvm-readobj: Handle invalid references to the string table.Rafael Espindola1-3/+3
llvm-svn: 242658
2015-07-20llvm-readobj: call exit(1) on error.Rafael Espindola1-7/+4
llvm-readobj exists for testing llvm. We can safely stop the program the first time we know the input in corrupted. This is in preparation for making it handle a few more broken files. llvm-svn: 242656
2015-07-20Refactor duplicated code. NFC.Rafael Espindola1-8/+9
llvm-svn: 242655
2015-07-09[Object][ELF] Support dumping hash-tables from files with no section table.Michael J. Spencer1-0/+6
This time without breaking the bots. llvm-svn: 241869
2015-07-09Temporarily reverting 241765, 241768, and 241772 to unbreak the build bots.Adrian Prantl1-6/+0
llvm-svn: 241781
2015-07-09[Object][ELF] Support dumping hash-tables from files with no section table.Michael J. Spencer1-0/+6
llvm-svn: 241765
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