12 Commits

Author SHA1 Message Date
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
James Henderson
1b103864ee [docs][llvm-strip][llvm-objcopy] Improve wording and fix highlighting
llvm-svn: 372754
2019-09-24 13:41:39 +00:00
James Henderson
778a5e5734 [docs] Make --version text more correct
Follow-up to r371983. Referring to "this program" in the description of
the --version option in the documentation isn't exactly correct, because
the docs are not part of the program, and so "this program" doesn't
really refer to anything. This patch brings the other users of this
terminology into line with the new updates to llvm-size and
llvm-strings.

Reviewed by: alexshap, MaskRay

Differential Revision: https://reviews.llvm.org/D67618

llvm-svn: 372107
2019-09-17 11:43:42 +00:00
Fangrui Song
2f519d7072 [llvm-objcopy] Ignore -B --binary-architecture=
GNU objcopy documents that -B is only useful with architecture-less
input (i.e. "binary" or "ihex"). After D67144, -O defaults to -I, and
-B is essentially a NOP.

* If -O is binary/ihex, GNU objcopy ignores -B.
* If -O is elf*, -B provides the e_machine field in GNU objcopy.

So to convert a blob to an ELF, `-I binary -B i386:x86-64 -O elf64-x86-64` has to be specified.

`-I binary -B i386:x86-64 -O elf64-x86-64` creates an ELF with its
e_machine field set to EM_NONE in GNU objcopy, but a regular x86_64 ELF
in elftoolchain elfcopy. Follow the elftoolchain approach (ignoring -B)
to simplify code. Users that expect their command line portable should
specify -B.

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D67215

llvm-svn: 371914
2019-09-14 01:36:31 +00:00
Michael Pozulp
c45fd0cad4 [llvm-objcopy] Add support for response files in llvm-strip and llvm-objcopy
Summary: Addresses https://bugs.llvm.org/show_bug.cgi?id=42671

Reviewers: jhenderson, espindola, alexshap, rupprecht

Reviewed By: jhenderson

Subscribers: seiya, emaste, arichardson, jakehehrlich, MaskRay, abrachet, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D65372

llvm-svn: 371911
2019-09-14 01:14:43 +00:00
James Henderson
818e5c9503 [docs][llvm-objcopy][llvm-strip] Improve --strip-unneeded description
Behaviour was recently added to this switch to strip debug sections too.
See r369761.

This change also makes the description for the --strip-unneeded switch
consistent between the two docs.

Reviewed by: MaskRay

Differential Revision: https://reviews.llvm.org/D67546

llvm-svn: 371855
2019-09-13 13:26:52 +00:00
Chris Jackson
fa1fe93789 [llvm-objcopy] Allow the visibility of symbols created by --binary and
--add-symbol to be specified with --new-symbol-visibility

llvm-svn: 370458
2019-08-30 10:17:16 +00:00
Chris Jackson
e5cdfbc65c [llvm-objcopy] Allow 'protected' visibility to be set when using
add-symbol

Reviewers: Maskray, rupprecht

Differential Revision: https://reviews.llvm.org/D65891

llvm-svn: 368982
2019-08-15 09:45:09 +00:00
Sergey Dmitriev
cdeaac5dce [llvm-objcopy] Add support for --add-section for COFF
This patch enables support for --add-section=... option for COFF objects.

Differential Revision: https://reviews.llvm.org/D65040

llvm-svn: 367130
2019-07-26 17:06:41 +00:00
James Henderson
8cf99a1170 [docs][llvm-objcopy] Add description of binary input/output to doc
We briefly referred to being able to specify --target=binary without
explaining what binary input/output meant. This change adds a section on
this.

Reviewed by: MaskRay, abrachet

Differential Revision: https://reviews.llvm.org/D64245

llvm-svn: 365312
2019-07-08 11:41:54 +00:00
James Henderson
1a517a4630 [docs][llvm-objcopy] Improve some wording.
llvm-svn: 365187
2019-07-05 11:57:07 +00:00
James Henderson
e26ca966fb [docs][llvm-objcopy] Write documentation for llvm-objcopy
This patch addresses https://bugs.llvm.org/show_bug.cgi?id=42183 by replacing
the stub markdown doc for llvm-objcopy with a full one describing the current
options available in llvm-objcopy.

Reviewed by: jakehehrlich, MaskRay

Differential Revision: https://reviews.llvm.org/D63820

llvm-svn: 365042
2019-07-03 14:21:48 +00:00