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PR30592 objcopy: allow --set-section-flags to add or remove SHF_X86_64_LARGE

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For example, objcopy --set-section-flags .data=alloc,large will add
SHF_X86_64_LARGE to the .data section.  Omitting "large" will drop the
SHF_X86_64_LARGE flag.

The bfd_section flag is named generically, SEC_ELF_LARGE, in case other
processors want to follow SHF_X86_64_LARGE.  SEC_ELF_LARGE has the same
value as SEC_TIC54X_BLOCK used by coff.

bfd/
    * section.c: Define SEC_ELF_LARGE.
    * bfd-in2.h: Regenerate.
    * elf64-x86-64.c (elf_x86_64_section_flags, elf_x86_64_fake_sections,
    elf_x86_64_copy_private_section_data): New.

binutils/
    * NEWS: Mention the new feature for objcopy.
    * doc/binutils.texi: Mention "large".
    * objcopy.c (parse_flags): Parse "large".
    (check_new_section_flags): Error if "large" is used with a
    non-x86-64 ELF target.
    * testsuite/binutils-all/x86-64/large-sections.d: New.
    * testsuite/binutils-all/x86-64/large-sections.s: New.
    * testsuite/binutils-all/x86-64/large-sections-i386.d: New.
    * testsuite/binutils-all/x86-64/large-sections-2.d: New.
    * testsuite/binutils-all/x86-64/large-sections-2-x32.d: New.
This commit is contained in:
Fangrui Song
2023-07-09 10:57:19 -07:00
committed by Fangrui Song
parent 4fb2abb59d
commit 5e24da908d
13 changed files with 155 additions and 10 deletions
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3
binutils/NEWS
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@@ -1,5 +1,8 @@
-*- text -*-
* objcopy --set-section-flags now supports "large" to set SHF_X86_64_LARGE
for ELF x86-64 objects.
Changes in 2.41:
* The MIPS port now supports the Sony Interactive Entertainment Allegrex