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* [llvm-objcopy] Add --keep-file-symbols optionPaul Semel2018-05-262-3/+9
| | | | | | | | This option prevent from removing file symbols while removing symbols. Differential Revision: https://reviews.llvm.org/D46830 llvm-svn: 333339
* [llvm-objcopy] Add --strip-unneeded optionPaul Semel2018-05-254-3/+43
| | | | | | Differential Revision: https://reviews.llvm.org/D46896 llvm-svn: 333267
* [llvm-strip] Minor fix of the usage of TableGenAlexander Shaposhnikov2018-05-231-13/+26
| | | | | | | | | | | | This is a small follow-up to the revisions r333117 and r331663. 1. Avoid the name conflicts of the generated variables for prefixes. 2. Apply clang-format -i -style=llvm to llvm-objcopy.cpp once again. 3. Add a test for the flag with double dash. Test plan: make check-all llvm-svn: 333120
* [llvm-strip] Expose --keep-symbol optionAlexander Shaposhnikov2018-05-232-0/+10
| | | | | | | | | | Expose --keep-symbol option in llvm-strip. Test plan: make check-all Differential revision: https://reviews.llvm.org/D47222 llvm-svn: 333117
* [llvm-objcopy] Fix the behavior of --strip-* and --keep-symbolAlexander Shaposhnikov2018-05-222-45/+63
| | | | | | | | | | | | If one runs llvm-objcopy --strip-all --keep-symbol foo and the symbol table indeed contains the symbol "foo" then it should not be removed. Test plan: make check-all Differential revision: https://reviews.llvm.org/D47052 llvm-svn: 333008
* Revert "[llvm-objcopy] Add --strip-unneeded option"Paul Semel2018-05-224-39/+4
| | | | | | | | There is a use after free I didn't see. Need to investigate. This reverts commit f7624abeb1f0d012309baf2e78cf2499fbfe5e5f. llvm-svn: 332925
* [llvm-objcopy] Add --strip-unneeded optionPaul Semel2018-05-214-4/+39
| | | | | | | | This option removes symbols that are not needed by relocations. Differential Revision: https://reviews.llvm.org/D46896 llvm-svn: 332915
* [llvm-objcopy] Fix formattingAlexander Shaposhnikov2018-05-181-8/+8
| | | | | | | | | Apply clang-format -i -style=llvm to llvm-objcopy.cpp NFC. Test plan: make check-all llvm-svn: 332693
* [llvm-objcopy] Add --only-keep-debug as a noopJake Ehrlich2018-05-152-0/+4
| | | | | | | | | | | | | | | | | | | This option just keeps being a problem and really needs to be implemented in some fashion. Implementing it properly requires some kind of "replaceSectionReference" method because all the existing links need to be maintained. The desired behavior is just for allocated sections to become NOBITS but actually implementing that is rather tricky due to the current design of llvm-objcopy. However converting allocated sections to NOBITS is just an optimization and not something debuggers need. Debuggers can debug a stripped executable and take an unstripped executable for that stripped executable as input. Additionally allocated sections account for a very small part of debug binaries so this optimization is quite small. I propose that for the time being we implement this as a NOP so that people can use llvm-objcopy where they need to, just in a sub-optimal way. This option has already blocked a lot of people and its currently blocking me. llvm-svn: 332396
* [llvm-objcopy] Add --keep-symbol (-K) optionPaul Semel2018-05-152-0/+12
| | | | | | | | | This option permits to explicitly keep the specified symbol so that it doesn't get removed. Differential Revision: https://reviews.llvm.org/D46819 llvm-svn: 332356
* [llvm-strip] Add support for -remove-sectionAlexander Shaposhnikov2018-05-112-0/+10
| | | | | | | | | | This diff adds support for -remove-section to llvm-strip. Test plan: make check-all Differential revision: https://reviews.llvm.org/D46567 llvm-svn: 332081
* [llvm-objcopy] Add --strip-symbol (-N) optionPaul Semel2018-05-094-3/+49
| | | | llvm-svn: 331924
* [llvm-objcopy] Fix exit codeAlexander Shaposhnikov2018-05-081-3/+13
| | | | | | | | | | Set the exit code to 1 if no arguments are specified. Test plan: make check-all Differential revision: https://reviews.llvm.org/D46547 llvm-svn: 331776
* [tools] Introduce llvm-stripAlexander Shaposhnikov2018-05-074-20/+105
| | | | | | | | | | | | llvm-strip is supposed to be a drop-in replacement for binutils strip. To start the ball rolling this diff adds the initial bits for llvm-strip, more features will be added incrementally over time. Test plan: make check-all Differential revision: https://reviews.llvm.org/D46407 llvm-svn: 331663
* [llvm-objcopy] Add --discard-all (-x) optionPaul Semel2018-05-024-6/+25
| | | | llvm-svn: 331400
* [llvm-objcopy] Add --weaken optionPaul Semel2018-05-022-0/+8
| | | | llvm-svn: 331397
* [llvm-objcopy] Add --weaken-symbol (-W) optionPaul Semel2018-04-272-0/+13
| | | | llvm-svn: 331070
* [llvm-objcopy] Add --globalize-symbol optionPaul Semel2018-04-272-3/+11
| | | | llvm-svn: 331068
* [llvm-objcopy] Implement --redefine-sym optionAlexander Shaposhnikov2018-04-264-39/+38
| | | | | | | | | | | This diff implements --redefine-sym option for changing the name of a symbol. Test plan: make check-all Differential revision: https://reviews.llvm.org/D46029 llvm-svn: 330973
* [llvm-objcopy] Add --localize-symbol optionPaul Semel2018-04-262-2/+24
| | | | llvm-svn: 330963
* [llvm-objcopy] Adjust the help messageAlexander Shaposhnikov2018-04-241-3/+3
| | | | | | | | | | Capitalize the first letter, make the text a bit more consistent. NFC. Differential revision: https://reviews.llvm.org/D46025 llvm-svn: 330777
* [llvm-objcopy] Adjust the code for the old versions of msvcAlexander Shaposhnikov2018-04-241-1/+1
| | | | | | Follow-up for r330685. llvm-svn: 330686
* Recommit "[llvm-objcopy] Switch over to using TableGen for parsing arguments"Alexander Shaposhnikov2018-04-244-109/+243
| | | | | | | | | Add explicit dependency on ObjcopyTableGen and rerun the tests on Windows. I will double-check the build bots and revert this commit if necessary. llvm-svn: 330685
* [llvm-objcopy] Fix sh_linkAlexander Shaposhnikov2018-04-202-34/+20
| | | | | | | | | | | | This diff fixes sh_link for various types of sections (i.e. for SHT_ARM_EXIDX, SHT_HASH). In particular, this change enables us to use llvm-objcopy with clang -gsplit-dwarf for the target android-arm. Test plan: make check-all Differential revision: https://reviews.llvm.org/D45851 llvm-svn: 330478
* Define InitLLVM to do common initialization all at once.Rui Ueyama2018-04-131-7/+2
| | | | | | | | | | | 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
* Revert "[llvm-objcopy] Switch over to using TableGen for parsing arguments"Jake Ehrlich2018-04-124-241/+109
| | | | | | | | TableGen seems to work differently on windows. I'll need to revert this This reverts commit 7a153ddea067b24da59f6a66c733d79205969501. llvm-svn: 329867
* [llvm-objcopy] Switch over to using TableGen for parsing argumentsJake Ehrlich2018-04-114-109/+241
| | | | | | | | | Swithces from using the command line library to using TableGen. This will allow llvm-strip to exist and allow refinements of the command line syntax. Differential Revision: https://reviews.llvm.org/D44236 llvm-svn: 329863
* [llvm-objcopy] Implement support for section groupsAlexander Shaposhnikov2018-03-212-45/+137
| | | | | | | | | | | | | | | | | | | This diff adds support for SHT_GROUP sections to llvm-objcopy. Some sections are interrelated and comprise a group. For example, a definition of an inline function might require, in addition to the section containing its instructions, a read-only data section containing literals referenced inside the function. A section of the type SHT_GROUP contains the indices of the group members, therefore, it needs to be updated whenever the indices change. Similarly, the fields sh_link, sh_info should be recalculated as well. [Resubmit r328012 with the proper handling of endianness] Test plan: make check-all Differential revision: https://reviews.llvm.org/D43996 llvm-svn: 328143
* [llvm-objcopy] Revert r328012Alexander Shaposhnikov2018-03-202-120/+43
| | | | | | | Temporarily revert r328012 (since it broke down the big-endian bots), will resubmit an updated version later. llvm-svn: 328024
* [llvm-objcopy] Implement support for section groupsAlexander Shaposhnikov2018-03-202-43/+120
| | | | | | | | | | | | | | | | | This diff adds support for SHT_GROUP sections to llvm-objcopy. Some sections are interrelated and comprise a group. For example, a definition of an inline function might require, in addition to the section containing its instructions, a read-only data section containing literals referenced inside the function. A section of the type SHT_GROUP contains the indices of the group members, therefore, it needs to be updated whenever the indices change. Similarly, the fields sh_link, sh_info should be recalculated as well. Test plan: make check-all Differential revision: https://reviews.llvm.org/D43996 llvm-svn: 328012
* Revert "[llvm-objcopy] Add support for large indexes"Jake Ehrlich2018-03-072-215/+27
| | | | | | | | Not all build bots have unzip which I used in a test. This reverts commit 0b1f26d39ea42dd3716b525fbc8c78d8c7bb4479. llvm-svn: 326941
* [llvm-objcopy] Add support for large indexesJake Ehrlich2018-03-072-27/+215
| | | | | | | | | | | | | Because of -ffunction-sections (and maybe other use cases I'm not aware of?) it can occur that we need more than 0xfeff sections but ELF dosn't support that many sections. To solve this problem SHN_XINDEX exists and with it come a whole host of changes for section indexes everywhere. This change adds support for those cases which should allow llvm-objcopy to copy binaries that have an arbitrary number of sections. Differential Revision: https://reviews.llvm.org/D42516 llvm-svn: 326940
* [llvm-objcopy] Fix typo in setSymTabAlexander Shaposhnikov2018-02-241-2/+3
| | | | | | | | | | | | This diff fixes the name of the argument of setSymTab and makes setSymTab/setStrTab private (to make the public interface a bit cleaner). Test plan: make check-all Differential revision: https://reviews.llvm.org/D43661 llvm-svn: 326005
* [llvm-objcopy] Use the full filename in --add-gnu-debuglinkAlexander Richardson2018-02-191-2/+2
| | | | | | | | | | | | | | | | | Summary: The current implementation was writing the file name without the extension whereas GNU objcopy writes the full filename. With this change GDB will now load the .debug file instead of silently ignoring it. Reviewers: jakehehrlich, jhenderson Reviewed By: jakehehrlich Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D43474 llvm-svn: 325528
* [llvm-objcopy] Fix handling of zero-size segments in llvm-objcopyJake Ehrlich2018-02-142-28/+70
| | | | | | | | | | | | | | | | | Some ELF files produced by lld may have zero-size segment placeholders as shown below. Since GNU_STACK Offset is 0, the current code makes it the lowest used offset, and relocates all the segments over the ELF header. The resulting binary is total garbage. This change fixes how llvm-objcopy handles PT_PHDR properlly by treating ELF headers and the program header table as segments to allow the layout algorithm decide where those should go. Author: vit9696 Differential Revision: https://reviews.llvm.org/D42872 llvm-svn: 325189
* [llvm-objcopy] Make modifications in-place if output is not specifiedAlexander Shaposhnikov2018-02-091-3/+5
| | | | | | | | | | | | | | If the output file is not specified make the modifications in-place (like binutils objcopy does). In particular, this fixes the behavior of Clang -gsplit-dwarf (if Clang is configured to use llvm-objcopy), previously it was creating .dwo files, but still leaving *dwo* sections in the original binary. Test plan: make check-all Differential revision: https://reviews.llvm.org/D42873 llvm-svn: 324783
* Reland "[llvm-objcopy] Refactor llvm-objcopy to use reader and writer objects"Jake Ehrlich2018-01-262-11/+11
| | | | | | | Somehow I reverted changes I made in a previous Reland. This change re-relands unconfusing a varible name with a type name. llvm-svn: 323494
* Reland "[llvm-objcopy] Refactor llvm-objcopy to use reader and writer objects"Jake Ehrlich2018-01-261-4/+4
| | | | | | I had more unused varibles. This change removes those to get rid of warnings. llvm-svn: 323493
* Reland "[llvm-objcopy] Refactor llvm-objcopy to use reader and writer objects"Jake Ehrlich2018-01-261-0/+2
| | | | | | Added line to output the proper files in the output to binary case. llvm-svn: 323489
* Revert "Reland "[llvm-objcopy] Refactor llvm-objcopy to use reader and ↵Jake Ehrlich2018-01-262-11/+11
| | | | | | | | | | | | writer objects"" Tests were working on my system because the old correct files were left over and the new bug was that the output files were not being output at all. Consequently the test work on my system but fail on any other system. This reverts commit r323484. llvm-svn: 323486
* Reland "[llvm-objcopy] Refactor llvm-objcopy to use reader and writer objects"Jake Ehrlich2018-01-262-11/+11
| | | | | | I named a varible the same as a type which caused a warning. I also had unamed varibles. llvm-svn: 323484
* [llvm-objcopy] Refactor llvm-objcopy to use reader and writer objectsJake Ehrlich2018-01-254-437/+627
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While writing code for input and output formats in llvm-objcopy it became apparent that there was a code health problem. This change attempts to solve that problem by refactoring the code to use Reader and Writer objects that can read in different objects in different formats, convert them to a single shared internal representation, and then write them to any other representation. New classes: Reader: the base class used to construct instances of the internal representation Writer: the base class used to write out instances of the internal representation ELFBuilder: a helper class for ELFWriter that takes an ELFFile and converts it to a Object SectionVisitor: it became necessary to remove writeSection from SectionBase because, under the new Reader/Writer scheme, it's possible to convert between ELF Types such as ELF32LE and ELF32BE. This isn't possible with writeSection because it (dynamically) depends on the underlying section type *and* (statically) depends on the ELF type. Bad things would happen if the underlying sections for ELF32LE were used for writing to ELF64BE. To avoid this code smell (which would have compiled, run, and output some nonsesnse) I decoupled writing of sections from a class. SectionWriter: This is just the ELFT templated implementation of SectionVisitor. Many classes now have this class as a friend so that the writing methods in this class can write out private data. ELFWriter: This is the Writer that outputs to ELF BinaryWriter: This is the Writer that outputs to Binary ElfType: Because the ELF Type is not a part of the Object anymore we need a way to construct the correct default Writer based on properties of the Reader. This enum just keeps track of the ELF type of the input so it can be used as the default output type as well. Object has correspondingly undergone some serious changes as well. It now has more generic methods for building and manipulating ELF binaries. This interface makes ELFBuilder easy enough to use and will make the BinaryReader/Builder easy to create as well. Most changes in this diff are cosmetic and deal with the fact that a method has been moved from one class to another or a change from a pointer to a reference. Almost no changes should result in a functional difference (this is after all a refactor). One minor functional change was made and the result can be seen in remove-shstrtab-error.test. The fact that it fails hasn't changed but the error message has changed because that failure is detected at a later point in the code now (because WriteSectionHeaders is a property of the ElfWriter *not* a property of the Object). I'd say roughly 80-90% of this code is cosmetically different, 10-19% is different but functionally the same, and 1-5% is functionally different despite not causing a change in tests. Differential Revision: https://reviews.llvm.org/D42222 llvm-svn: 323480
* [llvm-objcopy] Add --add-gnu-debuglinkJake Ehrlich2018-01-253-0/+77
| | | | | | | | This change adds support for --add-gnu-debuglink to llvm-objcopy Differential Revision: https://reviews.llvm.org/D41731 llvm-svn: 323477
* Revert r322132; it appears to be an accidental commit, based on the commit ↵Aaron Ballman2018-01-253-77/+0
| | | | | | message. The original author of the commit has not commented on whether this was accidental or purposeful, so if this revert is in error, the author can re-commit with an actual commit message. llvm-svn: 323466
* Reverting r323463 as it appears to be an accidental commit. Regardless, it ↵Aaron Ballman2018-01-254-627/+437
| | | | | | | | | | broke a lot of build bots, so reverting back to green. http://lab.llvm.org:8011/builders/lldb-amd64-ninja-netbsd8/builds/9294 http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-ubuntu-fast/builds/24084 http://lab.llvm.org:8011/builders/clang-ppc64le-linux-lnt/builds/9567 llvm-svn: 323465
* tmpJake Ehrlich2018-01-254-437/+627
| | | | llvm-svn: 323463
* [llvm-objcopy] Use physical instead of virtual address when aligning and ↵Jake Ehrlich2018-01-221-16/+39
| | | | | | | | | | | | | | | | | | | | | placing sections in binary For sections with different virtual and physical addresses, alignment and placement in the output binary should be based on the physical address. Ran into this problem with a bare metal ARM project where llvm-objcopy added a lot of zero-padding before the .data section that had differing addresses. GNU objcopy did not add the padding, and after this fix, neither does llvm-objcopy. Update a test case so a section has different physical and virtual addresses. Fixes B35708 Authored By: Owen Shaw (owenpshaw) Differential Revision: https://reviews.llvm.org/D41619 llvm-svn: 323144
* tempJake Ehrlich2018-01-093-0/+77
| | | | llvm-svn: 322132
* [llvm-objcopy] Add --localize-hidden optionJake Ehrlich2018-01-053-1/+33
| | | | | | | This change adds support in llvm-objcopy for GNU objcopy's --localize-hidden option. This option changes every hidden or internal symbol into a local symbol. llvm-svn: 321884
* [llvm-objcopy] Add support for visibilityJake Ehrlich2018-01-022-4/+8
| | | | | | | I have no clue how this was missed when symbol table support was added. This change ensures that the visibility of symbols is preserved by default. llvm-svn: 321681
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