Commit Graph

70 Commits

Author SHA1 Message Date
Jordan Rupprecht d2c18b5983 [NFC][llvm-objcopy] Fix redundant config checks.
The check for unsupported options checks some configs twice in a || expression. Fixes PR47107.
2020-08-11 10:37:19 -07:00
Sameer Arora 3b5db7fc69 [llvm-install-name-tool] Merge install-name options
This diff merges all options for llvm-install-name-tool under a single
function processLoadCommands. Also adds another test case for -add_rpath
option.

Test plan: make check-all

Reviewed by: jhenderson, alexshap, smeenai, Ktwu

Differential Revision: https://reviews.llvm.org/D82812
2020-07-06 20:32:32 -07:00
Eric Christopher 4029f8ede4 Temporarily Revert "[llvm-install-name-tool] Merge install-name options" as it breaks the objcopy build.
This reverts commit c143900a08.
2020-07-06 15:40:14 -07:00
Sameer Arora c143900a08 [llvm-install-name-tool] Merge install-name options
This diff merges all options for llvm-install-name-tool under a single
function processLoadCommands. Also adds another test case for -add_rpath
option.

Test plan: make check-all

Reviewed by: jhenderson, alexshap, smeenai, Ktwu

Differential Revision: https://reviews.llvm.org/D82812
2020-07-06 15:15:20 -07:00
Sameer Arora 2bdcd8b14f [llvm-install-name-tool] Add -change option
Implement `-change` option for install-name-tool. The behavior exactly
matches that of cctools. Depends on D82410.

Reviewed By: jhenderson, smeenai

Differential Revision: https://reviews.llvm.org/D82613
2020-06-30 11:28:53 -07:00
Sameer Arora ca518c4918 [llvm-install-name-tool] Add -id option
Implement `-id` option for install-name-tool. Differences from cctool's
behavior:
 - Does **NOT** throw an error if multiple -id options are specified.
    Instead, picks the last one.
 - Throws an error in case empty id is specified.

Reviewed By: jhenderson, smeenai

Differential Revision: https://reviews.llvm.org/D82410
2020-06-30 11:28:53 -07:00
Alexander Shaposhnikov 2c663aa539 [llvm-objcopy][MachO] Fix segment size alignment
This diff addresses the old TODO in MachOObjcopy.cpp and
correctly sets the page size used for alignment of segments.
In particular, now llvm-objcopy's output is consistent
with the input (the alignment of vmsize doesn't change).

Test plan:

1. make check-all
2. verify that a binary copied via llvm-objcopy now correctly works on iOS.

Differential revision: https://reviews.llvm.org/D82503
2020-06-29 23:55:21 -07:00
Bjorn Pettersson cc836950ab [llvm-objcopy] Fix "unused-function" warning in NDEBUG builds
Fixup of commit b925ca37a8 to allow building with
-Werror -Wunused-function.
2020-06-29 16:59:15 +02:00
Alexander Shaposhnikov b925ca37a8 [llvm-install-name-tool] Add support for -rpath option
This diff implements -rpath option for llvm-install-name-tool
which replaces the rpath value in the specified Mach-O binary.

Patch by Sameer Arora!

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D82051
2020-06-26 17:23:03 -07:00
Alexander Shaposhnikov d332ec9209 [llvm-install-name-tool] Implement delete_rpath option
This diff adds support for deleting an rpath from a Mach-O binary.

Patch by Sameer Arora!

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D81527
2020-06-22 16:49:49 -07:00
Kirill Bobyrev 45e4c9d70c
NFC: Inline unused variable
The variable was not used anywhere except assert and causes build
warnings in the optimized builds.

Clanup after 913bc312b5
2020-06-16 08:29:52 +02:00
Alexander Shaposhnikov 913bc312b5 [llvm-objcopy][MachO] Add support for LC_CODE_SIGNATURE
This diff adds support for copying binaries
containing a LC_CODE_SIGNATURE load command.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D81768
2020-06-15 18:55:59 -07:00
Alexander Shaposhnikov c966ed8dc7 [llvm-objcopy][MachO] Fix cmdsize of LC_RPATH
Fix the calculation of the field cmdsize (in the function buildRPathLoadCommand)
to account for the null byte terminator.

Patch by Sameer Arora!

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D81575
2020-06-11 19:55:04 -07:00
Sameer Arora 12e5b02687 [llvm-objcopy] Reorder --dump-section for MachO
Reorder `DumpSection` under `handleArgs` in file `MachOObjcopy.cpp`. The
operation to dump a section is now performed before both add and remove
section operations for MachO file format.

Change for the ELF format at D81097. Together fixes
https://bugs.llvm.org/show_bug.cgi?id=44283

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D81123
2020-06-05 10:49:22 -07:00
Alexander Shaposhnikov 842a8cc10c [llvm-objcopy][MachO] Add support for removing Swift symbols
cctools strip has the option "-T" which removes Swift symbols.
This diff implements this option in llvm-strip for MachO.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D80099
2020-05-26 16:49:56 -07:00
Alexander Shaposhnikov a7abe8dd29 [llvm-objcopy][MachO] Fix code formatting
Apply clang-format to MachOObjcopy.cpp. NFC.

Test plan: make check-all
2020-05-17 20:46:17 -07:00
Alexander Shaposhnikov 999f04ce34 [llvm-objcopy][MachO] Fix isExternalSymbol method
N_PEXT bit should not affect whether a symbol is considered to be external or not.
This also fixes the construction of the symbol table since it relies on the correct
ordering of symbols.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D78888
2020-05-01 18:22:35 -07:00
Alexander Shaposhnikov 29c6f5c7fd [llvm-objcopy][MachO] Fix build
Some compilers are confused when the same name is used in different contexts.
Rename the field Section to unbreak the build.
(Caught by the buildbot http://lab.llvm.org:8011/builders/clang-with-thin-lto-ubuntu/builds/22374)
2020-04-27 18:20:01 -07:00
Alexander Shaposhnikov 0db3a5a93e [llvm-objcopy][MachO] Handle relocation entries where r_extern is zero
Fix handling of relocations with r_extern == 0.
If r_extern == 0 then r_symbolnum is an index of a section rather than a symbol index.

Patch by Seiya Nuta and Alexander Shaposhnikov.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D78946
2020-04-27 17:59:07 -07:00
Alexander Shaposhnikov 84eff8cef6 [llvm-objcopy][MachO] Fix segment's vmsize
This diff fixes the calculation of the field vmsize
in LC_SEGMENT/LC_SEGMENT_64 load commands.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D78799
2020-04-26 20:41:49 -07:00
Alexander Shaposhnikov d987eed91d [llvm-objcopy][MachO] Copy LC_LOAD_WEAK_DYLIB load commands
LC_LOAD_WEAK_DYLIB is analogous to LC_LOAD_DYLIB and doesn't require any special handling.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D78602
2020-04-23 12:21:44 -07:00
Alexander Shaposhnikov ef9a19cb5c [llvm-objcopy][MachO] Add missing license header
Add missing license header to Object.cpp.
NFC.
2020-04-22 16:07:40 -07:00
Alexander Shaposhnikov 91ccbe6fdc [llvm-objcopy][MachO] Fix n_sect field
This tiny change is a follow-up to the previous commit f34fdbcf99
where the update of n_sect was missing.

Test plan: make check-all
2020-04-22 15:44:03 -07:00
Alexander Shaposhnikov f34fdbcf99 [llvm-objcopy][MachO] Make --remove-section clean up dead symbols
Make --remove-section clean up dead symbols, return an Error if it can't be safely done.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D78474
2020-04-22 14:26:42 -07:00
Fangrui Song b14e9e3c0c Reland D76675 [llvm-objcopy] Match GNU behaviour regarding file symbols
Don't error on Config.KeepFileSymbols for COFF and Mach-O.

Original description:

GNU objcopy removes STT_FILE symbols for strip-debug operations, and
keeps them for --discard-all operation. Match their behaviour for
llvm-objcopy.

Bug: https://github.com/android/ndk/issues/1212

Differential Revision: https://reviews.llvm.org/D76675
2020-04-20 21:18:48 -07:00
Alexander Shaposhnikov d17d50ebc6 [llvm-objcopy][MachO] Copy LC_ENCRYPT_INFO/LC_ENCRYPT_INFO_64 load commands
Copy LC_ENCRYPT_INFO/LC_ENCRYPT_INFO_64 load commands.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D78339
2020-04-20 16:34:46 -07:00
Lang Hames a6f19762c6 [llvm-objcopy][MachO] Correctly identify object file endianness.
The header magic value is held in the native endianness, so the method used in
cc0ec3fdb9. Use MachOReader / MachOWriter's existing endianness tests instead.
2020-04-16 21:54:01 -07:00
Lang Hames cc0ec3fdb9 [llvm-objcopy][MachO] Fix MachO::relocation_info use after 386f1c114d.
Use shift/mask operations to access r_symbolnum rather than relying on
MachO::relocation_info. This should fix the big-endian bot failures that were
caused by 386f1c114d.
2020-04-16 18:26:59 -07:00
Georgii Rymar 1647ff6e27 [ADT/STLExtras.h] - Add llvm::is_sorted wrapper and update callers.
It can be used to avoid passing the begin and end of a range.
This makes the code shorter and it is consistent with another
wrappers we already have.

Differential revision: https://reviews.llvm.org/D78016
2020-04-14 14:11:02 +03:00
Alexander Shaposhnikov f79b81fbe2 [llvm-objcopy] Enable --discard-all for MachO
In this diff we enable the option --discard-all for MachO.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D75104
2020-02-26 12:51:15 -08:00
Alexander Shaposhnikov dc046c70de [llvm-objcopy][MachO] Change the storage of sections
In this diff we change the storage of a section to unique_ptr.
This refactoring was factored out from D71647.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D74946
2020-02-21 13:30:52 -08:00
Benjamin Kramer adcd026838 Make llvm::StringRef to std::string conversions explicit.
This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.

This doesn't actually modify StringRef yet, I'll do that in a follow-up.
2020-01-28 23:25:25 +01:00
Seiya Nuta 9e119ad69d
[llvm-objcopy][MachO] Implement --add-section
Reviewers: alexshap, rupprecht, jhenderson

Reviewed By: alexshap, jhenderson

Subscribers: mgorny, jakehehrlich, abrachet, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66283
2019-12-16 14:07:29 +09:00
Seiya Nuta d72a8a4dd5
[llvm-objcopy][MachO] Implement --dump-section
Reviewers: alexshap, rupprecht, jhenderson

Reviewed By: alexshap, rupprecht, jhenderson

Subscribers: MaskRay, jakehehrlich, abrachet, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66408
2019-11-25 12:30:37 +09:00
Fangrui Song 30ccee71ca [llvm-objcopy][MachO] Implement --strip-debug
Reviewed By: alexshap

Differential Revision: https://reviews.llvm.org/D70476
2019-11-21 09:40:34 -08:00
Fangrui Song 242002770b [llvm-objcopy][MachO] Fix symbol order in the symbol table
Only consider isUndefinedSymbol() when the symbol is not local. This
fixes an assert failure when copying the symbol table, if a n_type=0x20
symbol is followed by a n_type=0x64 symbol.

Reviewed By: alexshap, seiya

Differential Revision: https://reviews.llvm.org/D70475
2019-11-21 09:30:46 -08:00
Alexander Shaposhnikov c54959c00d Introduce llvm-install-name-tool
This diff adds a new "driver" for llvm-objcopy
which is supposed to emulate the behavior of install-name-tool.
This is a recommit of b5913e6 with ubsan, test dependencies issues fixed.

Differential revision: https://reviews.llvm.org/D69146

Test plan: make check-all
2019-11-19 23:42:37 -08:00
Alexander Shaposhnikov 2cea161b80 Revert "Introduce llvm-install-name-tool"
This temporarily reverts the commit 88f00aef68.
The change broke the buildbot http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/36836
2019-11-19 16:22:36 -08:00
Alexander Shaposhnikov 88f00aef68 Introduce llvm-install-name-tool
This diff adds a new "driver" for llvm-objcopy
which is supposed to emulate the behavior of install-name-tool.
This is a recommit of b5913e6d2 with ubsan issues fixed.

Differential revision: https://reviews.llvm.org/D69146

Test plan: make check-all
2019-11-19 15:16:32 -08:00
Fangrui Song 28a5dc7fc5 [llvm-objcopy][MachO] Implement --redefine-sym and --redefine-syms
Similar to D46029 (ELF) and D70036 (COFF), but for MachO.
Note, when --strip-symbol (not implemented for MachO) is also specified,
--redefine-sym executes before --strip-symbol.

Reviewed By: jhenderson, seiya

Differential Revision: https://reviews.llvm.org/D70212
2019-11-15 10:05:36 -08:00
Seiya Nuta bc11830c6a
[llvm-objcopy][MachO] Implement --remove-section
Reviewers: alexshap, rupprecht, jhenderson

Reviewed By: rupprecht, jhenderson

Subscribers: jakehehrlich, abrachet, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66282
2019-11-15 14:20:11 +09:00
Alexander Shaposhnikov 7d83c29890 Revert "Introduce llvm-install-name-tool"
This reverts commit b5913e6d2f.
2019-11-06 17:04:04 -08:00
Alexander Shaposhnikov b5913e6d2f Introduce llvm-install-name-tool
This diff adds a new "driver" for llvm-objcopy
which is supposed to emulate the behavior of install-name-tool.

Differential revision: https://reviews.llvm.org/D69146

Test plan: make check-all
2019-11-06 11:50:58 -08:00
Seiya Nuta 9bbf2a1544
[llvm-objcopy][MachO] Implement --strip-all
Reviewers: alexshap, rupprecht, jdoerfert, jhenderson

Reviewed By: alexshap

Subscribers: jakehehrlich, abrachet, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66281
2019-10-31 14:26:46 +09:00
Seiya Nuta 1e589f67ef
[llvm-objcopy][MachO] Support indirect symbol table
Summary:
Parse the indirect symbol table and update the indexes of
symbol entries in the table in the writer in case they have
been changed.

Reviewers: alexshap, rupprecht, jhenderson

Reviewed By: alexshap, rupprecht

Subscribers: jakehehrlich, abrachet, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66280
2019-10-30 15:12:22 +09:00
Seiya Nuta 7f19dd1ebf
[llvm-objcopy][MachO] Implement --only-section
Reviewers: alexshap, rupprecht, jdoerfert, jhenderson

Reviewed By: alexshap, rupprecht, jhenderson

Subscribers: mgorny, jakehehrlich, abrachet, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D65541
2019-10-28 16:00:20 +09:00
Alexander Shaposhnikov 074af2daf5 [llvm-objcopy][MachO] Add support for min os version load commands
Add support for min os version load commands.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D69419
2019-10-25 11:42:29 -07:00
Fangrui Song 671fb34358 [llvm-objcopy] Add --set-section-alignment
Fixes PR43181. This option was recently added to GNU objcopy (binutils
PR24942).

`llvm-objcopy -I binary -O elf64-x86-64 --set-section-alignment .data=8` can set the alignment of .data.

Reviewed By: grimar, jhenderson, rupprecht

Differential Revision: https://reviews.llvm.org/D67656

llvm-svn: 373461
2019-10-02 12:41:25 +00:00
Guillaume Chatelet 18f805a7ea [Alignment][NFC] Remove unneeded llvm:: scoping on Align types
llvm-svn: 373081
2019-09-27 12:54:21 +00:00
Guillaume Chatelet af11cc7eb5 [Alignment] Move OffsetToAlignment to Alignment.h
Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet, JDevlieghere, alexshap, rupprecht, jhenderson

Subscribers: sdardis, nemanjai, hiraditya, kbarton, jakehehrlich, jrtc27, MaskRay, atanasyan, jsji, seiya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D67499

llvm-svn: 371742
2019-09-12 15:20:36 +00:00