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| author | H.J. Lu <hjl.tools@gmail.com> | 2024-03-01 06:14:20 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2024-04-03 09:11:03 -0700 |
| commit | 584b30e4b3538a64d38bc1da9cfa09fc9355378a (patch) | |
| tree | c5d9e8cd2d6dbc695737abb77a523e86e7e411d7 /bfd/elf-eh-frame.c | |
| parent | 9ba56acee518492cfe21434b974c807f52ac7950 (diff) | |
| download | binutils-584b30e4b3538a64d38bc1da9cfa09fc9355378a.zip binutils-584b30e4b3538a64d38bc1da9cfa09fc9355378a.tar.gz binutils-584b30e4b3538a64d38bc1da9cfa09fc9355378a.tar.bz2 | |
elf: Add _bfd_elf_m[un]map_section_contents
Add _bfd_elf_mmap_section_contents and _bfd_elf_munmap_section_contents.
A backend must opt-in to use mmap. It should replace
bfd_malloc_and_get_section -> _bfd_elf_mmap_section_contents
free -> _bfd_elf_munmap_section_contents
on section contents.
* compress.c (bfd_get_full_section_contents): Don't allocate
buffer if mmapped_p is true.
* elf-bfd.h (elf_backend_data): Add use_mmap.
(bfd_elf_section_data): Add contents_addr and contents_size.
(_bfd_elf_mmap_section_contents): New.
(_bfd_elf_munmap_section_contents): Likewise.
* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Replace
bfd_malloc_and_get_section and free with
_bfd_elf_mmap_section_contents and _bfd_elf_munmap_section_contents
on section contents.
* elf-sframe.c (_bfd_elf_parse_sframe): Likewise.
* elf.c (_bfd_elf_make_section_from_shdr): Replace
bfd_malloc_and_get_section and free with
_bfd_elf_mmap_section_contents and _bfd_elf_munmap_section_contents
on section contents.
(_bfd_elf_print_private_bfd_data): Likewise.
(_bfd_elf_mmap_section_contents): New.
(_bfd_elf_munmap_section_contents): Likewise.
* elf32-i386.c (elf_i386_scan_relocs): Replace
bfd_malloc_and_get_section and free with
_bfd_elf_mmap_section_contents and _bfd_elf_munmap_section_contents
on section contents.
* elf64-x86-64.c (elf_x86_64_scan_relocs): Likewise.
(elf_x86_64_get_synthetic_symtab): Likewise.
* elfcode.h (elf_checksum_contents): Likewise.
* elflink.c (elf_link_add_object_symbols): Likewise.
(bfd_elf_get_bfd_needed_list): Likewise.
* elfxx-target.h (elf_backend_use_mmap): New.
(elfNN_bed): Add elf_backend_use_mmap.
* elfxx-x86.c (elf_x86_size_or_finish_relative_reloc): Replace
bfd_malloc_and_get_section and free with
_bfd_elf_mmap_section_contents and _bfd_elf_munmap_section_contents
on section contents.
(_bfd_x86_elf_get_synthetic_symtab): Replace free with
_bfd_elf_munmap_section_contents.
* elfxx-x86.h (elf_backend_use_mmap): New.
* libbfd.c: Include "elf-bfd.h".
(_bfd_generic_get_section_contents): Call bfd_mmap_local for
mmapped_p.
* opncls.c (_bfd_delete_bfd): Also munmap ELF section contents.
* section.c (asection): Add mmapped_p.
(BFD_FAKE_SECTION): Updated.
(bfd_malloc_and_get_section): Add a sanity check for not
mmapped_p.
* bfd-in2.h: Regenerated.
Diffstat (limited to 'bfd/elf-eh-frame.c')
| -rw-r--r-- | bfd/elf-eh-frame.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/bfd/elf-eh-frame.c b/bfd/elf-eh-frame.c index 9a50423..902d7c1 100644 --- a/bfd/elf-eh-frame.c +++ b/bfd/elf-eh-frame.c @@ -618,7 +618,7 @@ _bfd_elf_parse_eh_frame (bfd *abfd, struct bfd_link_info *info, /* Read the frame unwind information from abfd. */ - REQUIRE (bfd_malloc_and_get_section (abfd, sec, &ehbuf)); + REQUIRE (_bfd_elf_mmap_section_contents (abfd, sec, &ehbuf)); /* If .eh_frame section size doesn't fit into int, we cannot handle it (it would need to use 64-bit .eh_frame format anyway). */ @@ -1052,7 +1052,7 @@ _bfd_elf_parse_eh_frame (bfd *abfd, struct bfd_link_info *info, hdr_info->u.dwarf.table = false; free (sec_info); success: - free (ehbuf); + _bfd_elf_munmap_section_contents (sec, ehbuf); free (local_cies); #undef REQUIRE } |