mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 13:02:45 +00:00
4defa401d3
Aside from a straightforward rebase, this contains an out-of-tree patch from MaskRay which adds the `-Bsymbolic-non-weak-functions` flag to ld.
43 lines
1.6 KiB
Markdown
43 lines
1.6 KiB
Markdown
# Patches for binutils on SerenityOS
|
|
|
|
## `0001-Add-support-for-SerenityOS.patch`
|
|
|
|
Add support for SerenityOS
|
|
|
|
Teaches the assembler, BFD, and the linker about the SerenityOS target
|
|
triple.
|
|
|
|
We set '/' to not start a comment in GAS, as the QEMU port uses it for
|
|
division in constant expressions in assembly files (cf. as --divide).
|
|
|
|
`/usr/lib/Loader.so` is set as the default ELF interpreter.
|
|
|
|
On AArch64, we set `COMMONPAGESIZE` to enable RELRO support.
|
|
|
|
## `0002-ld-Add-Bsymbolic-non-weak-functions.patch`
|
|
|
|
ld: Add -Bsymbolic-non-weak-functions
|
|
|
|
This option is a subset of -Bsymbolic-functions: only STB_GLOBAL are
|
|
considered. Vague linkage functions are STB_WEAK. A vague linkage
|
|
function may have different addresses in a -Bsymbolic-functions linked
|
|
shared object and outside the shared object.
|
|
-Bsymbolic-non-weak-functions can keep pointer equality while providing
|
|
most benefits: (a) fewer JUMP_SLOT (symbol lookups) (b) avoid PLT
|
|
entries for default visibility defined functions.
|
|
|
|
PR 27871
|
|
include/
|
|
* bfdlink.h (struct bfd_link_info): Add dynamic_weak_functions.
|
|
ld/
|
|
* ldlex.h (enum option_values): Add OPTION_SYMBOLIC_NON_WEAK_FUNCTIONS.
|
|
* lexsup.c (struct ld_options): Add -Bsymbolic-non-weak-functions.
|
|
(enum symbolic_enum): Add symbolic_non_weak_functions.
|
|
(parse_args): Handle -Bsymbolic-non-weak-functions.
|
|
* ld.texi: Document -Bsymbolic-non-weak-functions.
|
|
* NEWS: Mention -Bsymbolic-non-weak-functions.
|
|
* testsuite/ld-elf/shared.exp: Add tests.
|
|
* testsuite/ld-elf/symbolic-non-weak-func.s: New file.
|
|
* testsuite/ld-elf/symbolic-non-weak-func-a.rd: Likewise.
|
|
* testsuite/ld-elf/symbolic-non-weak-func-b.rd: Likewise.
|
|
|