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Author SHA1 Message Date
Jake Ehrlich 8ad7779071 [llvm-objcopy] Add --build-id-link-dir flag 
This flag does not exist in GNU objcopy but has a major use case.
Debugging tools support the .build-id directory structure to find
debug binaries. There is no easy way to build this structure up
however. One way to do it is by using llvm-readelf and some crazy
shell magic. This implements the feature directly. It is most often
the case that you'll want to strip a file and send the original to
the .build-id directory but if you just want to send a file to the
.build-id directory you can copy to /dev/null instead.

Differential Revision: https://reviews.llvm.org/D54384

llvm-svn: 348174
 2018-12-03 19:49:23 +00:00
Fangrui Song e4ee066190 [llvm-objcopy] Delete redundant !Config.xx.empty() when followed by positive is_contained() check 
Summary: The original intention of !Config.xx.empty() was probably to emphasize the thing that is currently considered, but I feel the simplified form is actually easier to understand and it is also consistent with the call sites in other llvm components.

Reviewers: alexshap, rupprecht, jakehehrlich, jhenderson, espindola

Reviewed By: alexshap, rupprecht

Subscribers: emaste, arichardson, llvm-commits

Differential Revision: https://reviews.llvm.org/D55040

llvm-svn: 347891
 2018-11-29 17:32:51 +00:00
Fangrui Song 7570932977 Use llvm::copy. NFC 
llvm-svn: 347126
 2018-11-17 01:44:25 +00:00
Fangrui Song 5ec95dbd74 [llvm-objcopy] Use llvm::all_of and rename the variables "Segment" to avoid confusion with the type of the same name 
llvm-svn: 347123
 2018-11-17 01:15:55 +00:00
Jordan Rupprecht c5bae7834e [llvm-objcopy] Rename --keep to --keep-section. 
Summary:
llvm-objcopy/strip support `--keep` (for sections) and `--keep-symbols` (for symbols). For consistency and clarity, rename `--keep` to `--keep-section`.
In fact, for GNU compatability, -K is --keep-symbol, so it's weird that the alias `-K` is not the same as the short-ish `--keep`.

Reviewers: jakehehrlich, jhenderson, alexshap, MaskRay, espindola

Reviewed By: jakehehrlich, MaskRay

Subscribers: emaste, arichardson, llvm-commits

Differential Revision: https://reviews.llvm.org/D54477

llvm-svn: 346782
 2018-11-13 19:32:27 +00:00
Fangrui Song e9f34b0d52 [llvm-objcopy] Don't copy Config when processing --keep 
llvm-svn: 346717
 2018-11-12 23:46:22 +00:00
Jordan Rupprecht b47475c058 [llvm-objcopy] Don't apply --localize flags to common symbols 
Summary:
--localize-symbol and --localize-hidden will currently localize common symbols. GNU objcopy will not localize these symbols even when explicitly requested, which seems reasonable; common symbols should always be global so they can be merged during linking.

See PR39461

Reviewers: jakehehrlich, jhenderson, alexshap, MaskRay, espindola

Reviewed By: jakehehrlich, jhenderson, alexshap, MaskRay

Subscribers: emaste, arichardson, alexshap, MaskRay, llvm-commits

Differential Revision: https://reviews.llvm.org/D53782

llvm-svn: 345856
 2018-11-01 17:26:36 +00:00
Fangrui Song 32a34e6d7e [llvm-objcopy] Use proper cases 
Reviewers: jhenderson, alexshap, jakehehrlich, espindola, rupprecht

Reviewed By: jhenderson, rupprecht

Subscribers: emaste, arichardson, rupprecht, llvm-commits

Differential Revision: https://reviews.llvm.org/D53971

llvm-svn: 345845
 2018-11-01 16:02:12 +00:00
Fangrui Song 487b4fb6d7 [llvm-objcopy] Delete a redundant override whose base is empty 
llvm-svn: 345684
 2018-10-31 00:31:07 +00:00
Jordan Rupprecht 634820d414 [llvm-objcopy] Fix --keep-global-symbol/--globalize-symbol for undefined symbols. 
Summary: --keep-global-symbol and --globalize-symbol don't make sense for undefined symbols, so it should be ignored for those symbols. This matches GNU objcopy behavior.

Reviewers: jhenderson, alexshap, jakehehrlich, espindola

Reviewed By: jhenderson, jakehehrlich

Subscribers: emaste, arichardson, llvm-commits

Differential Revision: https://reviews.llvm.org/D53733

llvm-svn: 345614
 2018-10-30 16:23:38 +00:00
Alexander Shaposhnikov f4e75a5005 [llvm-objcopy] Move elf-specific code into subfolder 
In this diff the elf-specific code is moved into the subfolder ELF 
(and factored out from llvm-objcopy.cpp).

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D53790

llvm-svn: 345544
 2018-10-29 21:22:58 +00:00