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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
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Fixes PR42171.
In GNU objcopy, if -O (--output-target) is not specified, the value is
copied from -I (--input-target).
```
objcopy -I binary -B i386:x86-64 a.txt b # b is copied from a.txt
llvm-objcopy -I binary -B i386:x86-64 a.txt b # b is an x86-64 object file
```
This patch changes our behavior to match GNU. With this change, we can
delete code related to -B handling (D67215).
Reviewed By: jakehehrlich
Differential Revision: https://reviews.llvm.org/D67144
llvm-svn: 371913
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Summary: Tidied up errors during command line parsing to be more consistent with the rest of llvm-objcopy errors.
Reviewers: jhenderson, rupprecht, espindola, alexshap
Reviewed By: jhenderson, rupprecht
Subscribers: emaste, arichardson, MaskRay, llvm-commits, jakehehrlich
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62973
llvm-svn: 363350
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Summary:
This removes calls to `error()`/`reportError()` in the main driver (llvm-objcopy.cpp) as well as the associated argv-parsing (CopyConfig.cpp). `logAllUnhandledErrors()` is now the main way to print errors.
There are still a few uses from within the per-arch drivers, so we can't delete them yet... but almost!
Reviewers: jhenderson, alexshap, espindola
Reviewed By: jhenderson
Subscribers: emaste, arichardson, jakehehrlich, jdoerfert, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D58316
llvm-svn: 354600
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In this diff the elf-specific tests are moved into the subfolder llvm-objcopy/ELF
(the change was discussed in the comments on https://reviews.llvm.org/D54674).
A separate code reivew wasn't sent for this change
since Phabricator is failing to create such a large diff.
Test plan:
make check-all
make check-llvm-tools
make check-llvm-tools-llvm-objcopy
llvm-svn: 347958
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