Commit Graph

2 Commits

Author SHA1 Message Date
James Henderson e4a89a1bee [llvm-strip]Add --no-strip-all to disable --strip-all behaviour (including default stripping)
If certain switches are not specified, llvm-strip behaves as if
--strip-all were specified. This means that for testing, when we don't
want the stripping behaviour, we have to specify one of these switches,
which can be confusing. This change adds --no-strip-all to allow an
alternative way of suppressing the default stripping, in a less
confusing manner.

Reviewed by: jakehehrlich, MaskRay

Differential Revision: https://reviews.llvm.org/D61377

llvm-svn: 359781
2019-05-02 11:53:02 +00:00
James Henderson 66a9d0f8c6 [llvm-objcopy][llvm-strip] Add switch to allow removing referenced sections
llvm-objcopy currently emits an error if a section to be removed is
referenced by another section. This is a reasonable thing to do, but is
different to GNU objcopy. We should allow users who know what they are
doing to have a way to produce the invalid ELF. This change adds a new
switch --allow-broken-links to both llvm-strip and llvm-objcopy to do
precisely that. The corresponding sh_link field is then set to 0 instead
of an error being emitted.

I cannot use llvm-readelf/readobj to test the link fields because they
emit an error if any sections, like the .dynsym, cannot be properly
loaded.

Reviewed by: rupprecht, grimar

Differential Revision: https://reviews.llvm.org/D60324

llvm-svn: 358649
2019-04-18 09:13:30 +00:00