Add -plugin-save-temps to store plugin intermediate files permanently.
It can be used to exam the final input object files generated from IR
inputs.
* NEWS: Mention -plugin-save-temps.
* ld.h (ld_config_type): Add plugin_save_temps.
* ld.texi: Document -plugin-save-temps.
* ldlex.h (option_values): Add OPTION_PLUGIN_SAVE_TEMPS.
* lexsup.c (ld_options): Add -plugin-save-temps.
(parse_args): Handle OPTION_PLUGIN_SAVE_TEMPS.
* plugin.c (plugin_call_cleanup): Don't call plugin
cleanup_handler for -plugin-save-temps.
Adds two new external authors to etc/update-copyright.py to cover
bfd/ax_tls.m4, and adds gprofng to dirs handled automatically, then
updates copyright messages as follows:
1) Update cgen/utils.scm emitted copyrights.
2) Run "etc/update-copyright.py --this-year" with an extra external
author I haven't committed, 'Kalray SA.', to cover gas testsuite
files (which should have their copyright message removed).
3) Build with --enable-maintainer-mode --enable-cgen-maint=yes.
4) Check out */po/*.pot which we don't update frequently.
PR 28910
* lexsup.c (ld_options): Require that the --architecture option is given exactly two dashes, so that it does not become confused with the -a option.
PR 30374
* ldfile.c (struct input_remap): New structure. (ldfile_add_remap): New function. (ldfile_remap_input_free): New function. (ldfile_add_remap_file): New function. (ldfile_possibly_remap_input): New function. (ldfile_print_input_remaps): New function. * ldfile.h: Add prototypes for new functions.
* ldlang.c (new_afile): Call ldfile_possibly_remap_input. (lang_finish): Call ldfile_remap_input_free. (lang_map): Call ldfile_print_input_remaps.
* ldlex.h (OPTION_REMAP_INPUTS, OPTION_REMAP_INPUTS_FILE): Define.
* lexsup.c (ld_options): Add --remap-inputs-file and --remap-inputs. (parse_args): Handle new options.
* NEWS: Mention the new feature.
* ld.texi: Document the new options.
* testsuite/ld-misc/input-remap.exp: New test driver.
* testsuite/ld-misc/remaps.r: New file: Expected linker output.
* testsuite/ld-misc/remaps.txt: New file. Input remaps file.
PR 16566
* ldlang.c (ld_is_local_symbol): New function. (print_input_section): Add code to display local symbols in the section.
* ldlex.h (enum option_values): Add OPTION_PRINT_MAP_LOCALS and OPTION_PRINT_MAP_LOCALS.
* lexsup.c (ld_options[]): Add entries for --print-map-locals and --no-print-map-locals.
* NEWS: Mention the new feature.
* ld.h (struct ld_config_type): Add print_map_locals field.
* ld.texi: Document the new command line option.
* testsuite/ld-scripts/sizeof.s: Add a local symbol.
* testsuite/ld-scripts/map-locals.d: New test control file.
* testsuite/ld-scripts/map-address.exp: Run the new test.
When using a bss-plt we'll always trigger the RWX warning, which
disturbs gcc test results. On the other hand, there may be reason to
want the warning when gcc is configured with --enable-secureplt.
So turning off the warning entirely for powerpc might not be the best
solution. Instead, we'll turn off the warning whenever a bss-plt is
generated, unless the user explicitly asked for the warning.
bfd/
* elf32-ppc.c (ppc_elf_select_plt_layout): Set
no_warn_rwx_segments on generating a bss plt, unless explicity
enabled by the user. Also show the bss-plt warning when
--warn-rwx-segments is given without --bss-plt.
include/
* bfdlink.h (struct bfd_link_info): Add user_warn_rwx_segments.
ld/
* lexsup.c (parse_args): Set user_warn_rwx_segments.
* testsuite/ld-elf/elf.exp: Pass --secure-plt for powerpc to
the rwx tests.
The newer update-copyright.py fixes file encoding too, removing cr/lf
on binutils/bfdtest2.c and ld/testsuite/ld-cygwin/exe-export.exp, and
embedded cr in binutils/testsuite/binutils-all/ar.exp string match.
Tidies:
- Move stuff from bfd-in.h and libbfd.c to compress.c
- Delete COMPRESS_DEBUG from enum compressed_debug_section_type
- Move compress_debug field out of link_info to ld_config.
Fixes:
- Correct test in bfd_convert_section_setup to use obfd flags,
not ibfd.
- Apply bfd_applicable_file_flags to compression bfd flags added
by gas and ld to the output bfd.
bfd/
* bfd-in.h (enum compressed_debug_section_type),
(struct compressed_type_tuple),
(bfd_get_compression_algorithm),
(bfd_get_compression_algorithm_name),
* libbfd.c (compressed_debug_section_names),
(bfd_get_compression_algorithm),
(bfd_get_compression_algorithm_name): Move..
* compress.c: ..to here, deleting COMPRESS_DEBUG from
enum compressed_debug_section_type.
(bfd_convert_section_setup): Test obfd flags not ibfd for
compression flags.
* elf.c (elf_fake_sections): Replace link_info->compress_debug
test with abfd->flags test.
* bfd-in2.h: Regenerate.
binutils/
* objcopy.c (copy_file): Tidy setting of bfd compress flags.
Expand comment.
gas/
* write.c (compress_debug): Test bfd compress flags rather than
flag_compress_debug.
(write_object_file): Apply bfd_applicable_file_flags to compress
debug flags added to output bfd.
include/
* bfdlink.h (struct bfd_link_info): Delete compress_debug.
ld/
* ld.h (ld_config_type): Add compress_debug.
* emultempl/elf.em: Replace references to link_info.compress_debug
with config.compress_debug.
* lexsup.c (elf_static_list_options): Likewise.
* ldmain.c (main): Likewise. Apply bfd_applicable_file_flags
to compress debug flags added to output bfd.
PR 29654
* ld.h (struct ld_config_type): Add no_warnings field.
* ldlex.h (enum option_values): Add OPTION_NO_WARNINGS.
* lexsup.c (ld_options): Add --no-warnings.
(parse_args): Add support for -w and --no-warnings.
* ldmisc.c (vfinfo): Return early if the message is a warning and
-w has been enabled.
* ld.texi (options): Document new command line option.
* NEWS: Mention the new feature.
bfd/ChangeLog:
* bfd-in.h (bfd_hash_set_default_size): Add COMPRESS_UNKNOWN
enum value.
(struct compressed_type_tuple): New.
* bfd-in2.h (bfd_hash_set_default_size): Regenerate.
(struct compressed_type_tuple): Likewise.
* libbfd.c (ARRAY_SIZE): New macro.
(bfd_get_compression_algorithm): New function.
(bfd_get_compression_algorithm_name): Likewise.
gas/ChangeLog:
* as.c: Do not special-case, use the new functions.
ld/ChangeLog:
* emultempl/elf.em: Do not special-case, use the new functions.
* lexsup.c (elf_static_list_options): Likewise.
PR29397 PR29563: Add new configure option --with-zstd which defaults to
auto. If pkgconfig/libzstd.pc is found, define HAVE_ZSTD and support
zstd compressed debug sections for most tools.
* bfd: for addr2line, objdump --dwarf, gdb, etc
* gas: support --compress-debug-sections=zstd
* ld: support ELFCOMPRESS_ZSTD input and --compress-debug-sections=zstd
* objcopy: support ELFCOMPRESS_ZSTD input for
--decompress-debug-sections and --compress-debug-sections=zstd
* gdb: support ELFCOMPRESS_ZSTD input. The bfd change references zstd
symbols, so gdb has to link against -lzstd in this patch.
If zstd is not supported, ELFCOMPRESS_ZSTD input triggers an error. We
can avoid HAVE_ZSTD if binutils-gdb imports zstd/ like zlib/, but this
is too heavyweight, so don't do it for now.
```
% ld/ld-new a.o
ld/ld-new: a.o: section .debug_abbrev is compressed with zstd, but BFD is not built with zstd support
...
% ld/ld-new a.o --compress-debug-sections=zstd
ld/ld-new: --compress-debug-sections=zstd: ld is not built with zstd support
% binutils/objcopy --compress-debug-sections=zstd a.o b.o
binutils/objcopy: --compress-debug-sections=zstd: binutils is not built with zstd support
% binutils/objcopy b.o --decompress-debug-sections
binutils/objcopy: zstd.o: section .debug_abbrev is compressed with zstd, but BFD is not built with zstd support
...
```
Generate a .note.package FDO package metadata ELF note, following
the spec: https://systemd.io/ELF_PACKAGE_METADATA/
If the jansson library is available at build time (and it is explicitly
enabled), link ld to it, and use it to validate that the input is
correct JSON, to avoid writing garbage to the file. The
configure option --enable-jansson has to be used to explicitly enable
it (error out when not found). This allows bootstrappers (or others who
are not interested) to seamlessly skip it without issues.
Make ld and bfd values consistent by swapping values 0 and 2 in
link_info.warn_execstack. This has the benefit of making the value an
"extended" boolean, with 0 meaning no warning, 1 meaning warn, other
values a conditional warning.
Yes, this patch introduces fails on arm/aarch64. Not a problem with
this patch but an arm/aarch64 before_parse problem.
bfd/
* elflink.c (bfd_elf_size_dynamic_sections): Adjust
warn_execstack test.
include/
* bfdlink.h (warn_execstack): Swap 0 and 2 meaning.
ld/
* configure.ac (DEFAULT_LD_WARN_EXECSTACK): Use values of 0,
1, 2 consistent with link_info.warn_execstack.
* ld.texi: Typo fixes.
* lexsup.c (parse_args): Adjust setting of link_info.warn_execstack.
(elf_static_list_options): Adjust help message conditions.
* configure: Regenerate.
The result of running etc/update-copyright.py --this-year, fixing all
the files whose mode is changed by the script, plus a build with
--enable-maintainer-mode --enable-cgen-maint=yes, then checking
out */po/*.pot which we don't update frequently.
The copy of cgen was with commit d1dd5fcc38ead reverted as that commit
breaks building of bfp opcodes files.
When link_info.keep_memory is true, linker caches the relocation
information and symbol tables of input files in memory. When there
are many input files with many relocations, we may run out of memory.
Add --max-cache-size=SIZE to set the maximum cache size.
bfd/
PR ld/18028
* bfd.c (bfd): Add alloc_size.
* elf-bfd.h (_bfd_elf_link_info_read_relocs): New.
* elf32-i386.c (elf_i386_check_relocs): Use _bfd_link_keep_memory.
Update cache_size.
* elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
* elflink.c (_bfd_elf_link_read_relocs): Renamed to ...
(_bfd_elf_link_info_read_relocs): This. Update cache_size.
(_bfd_elf_link_read_relocs): New.
(_bfd_elf_link_check_relocs): Call _bfd_elf_link_info_read_relocs
instead of _bfd_elf_link_read_relocs.
(elf_link_add_object_symbols): Likewise.
(elf_link_input_bfd): Likewise.
(init_reloc_cookie_rels): Likewise.
(init_reloc_cookie): Update cache_size. Call
_bfd_elf_link_info_read_relocs instead of
_bfd_elf_link_read_relocs.
(link_info_ok): New.
(elf_gc_smash_unused_vtentry_relocs): Updated. Call
_bfd_elf_link_info_read_relocs instead of
_bfd_elf_link_read_relocs.
(bfd_elf_gc_sections): Use link_info_ok. Pass &link_info_ok
to elf_gc_smash_unused_vtentry_relocs.
* libbfd-in.h (_bfd_link_keep_memory): New.
* linker.c (_bfd_link_keep_memory): New.
* opncls.c (bfd_alloc): Update alloc_size.
* bfd-in2.h: Regenerated.
* libbfd.h: Likewise.
include/
PR ld/18028
* bfdlink.h (bfd_link_info): Add cache_size and max_cache_size.
ld/
PR ld/18028
* NEWS: Mention --max-cache-size=SIZE.
* ld.texi: Document --max-cache-size=SIZE.
* ldlex.h (option_values): Add OPTION_MAX_CACHE_SIZE.
* ldmain.c: (main): Set link_info.max_cache_size to -1.
* lexsup.c (ld_options): Add --max-cache-size=SIZE.
(parse_args): Support OPTION_MAX_CACHE_SIZE.
* testsuite/ld-bootstrap/bootstrap.exp: Add test for
--max-cache-size=-1.
gold has had this option for many years. Not having this option caused
some confusion to users. The help message clarifies the default state.
ld/
* ldlex.h (enum option_values): Add OPTION_NO_PIE.
* lexsup.c (struct ld_options): Add -no-pie.
(parse_args): Handle -no-pie.
* ld.texi: Document -no-pie.
When --gc-sections is in effect, a reference from a retained section
to __start_SECNAME or __stop_SECNAME causes all input sections named
SECNAME to also be retained, if SECNAME is representable as a C
identifier and either __start_SECNAME or __stop_SECNAME is synthesized
by the linker. Add an option to disable that feature, effectively
ignoring any relocation that references a synthesized linker defined
__start_ or __stop_ symbol.
PR 27451
include/
* bfdlink.h (struct bfd_link_info): Add start_stop_gc.
bfd/
* elflink.c (_bfd_elf_gc_mark_rsec): Ignore synthesized linker
defined start/stop symbols when start_stop_gc.
(bfd_elf_gc_mark_dynamic_ref_symbol): Likewise.
(bfd_elf_define_start_stop): Don't modify ldscript_def syms.
* linker.c (bfd_generic_define_start_stop): Likewise.
ld/
* emultempl/elf.em: Handle -z start-stop-gc and -z nostart-stop-gc.
* lexsup.c (elf_static_list_options): Display help for them. Move
help for -z stack-size to here from elf_shlib_list_options. Add
help for -z start-stop-visibility and -z undefs.
* ld.texi: Document -z start-stop-gc and -z nostart-stop-gc.
* NEWS: Mention -z start-stop-gc.
* testsuite/ld-gc/start2.s,
* testsuite/ld-gc/start2.d: New test.
* testsuite/ld-gc/gc.exp: Run it.
* lexsup.c (parse_args): Add more checks of the mapfile. If it is
a directory use the basename of the output file as the file
component. If the % character is present, replace it with the
full output filepath.
* testsuite/ld-scripts/map-address.exp: Add test of %
functionality.
* ld.texi: Document the new behaviour.
PR 26626
* ldmain.c (undefined_symbol): If an error handlign script is
available, call it.
* ldfile.c (error_handling_script): Declare.
(ldfile_open_file): If a library cannot be found and an error
handling script is available, call it.
* ldmain.h (error_handling_script): Prototype.
* ldlex.h (OPTION_ERROR_HANDLING_SCRIPT): Define.
* lexsup.c (ld_options): Add --error-handling-script.
(parse_args): Add support for --errror-handling-script.
* ld.texi: Document the new feature.
* configure.ac: Add --error-handling-script option to disable
support for the new feature.
* NEWS: Mention the new feature.
* config.in: Regenerate.
* configure: Regenerate.
The symbol string table in the .symtab section is optional and cosmetic.
The contents of the .symtab section have no impact on run-time execution.
The symbol names in the symbol string table help distinguish addresses at
different locations. Add a linker option, -z unique-symbol, to avoid
duplicated local symbol names in the symbol string table.
This feature was well received by the livepatch maintainers. It not only
solves the duplicated local symbol name problem, but also would allow
livepatch to more precisely locate duplicate symbols in general for
patching.
bfd/
PR ld/26391
* elflink.c (elf_final_link_info): Add local_hash_table.
(local_hash_entry): New.
(local_hash_newfunc): Likewise.
(elf_link_output_symstrtab): Append ".COUNT" to duplicated local
symbols.
(bfd_elf_final_link): Initialize and free local_hash_table for
"-z unique-symbol".
include/
PR ld/26391
* bfdlink.h (bfd_link_info): Add unique_symbol.
ld/
PR ld/26391
* NEWS: Mention "-z unique-symbol".
* emultempl/elf.em (gld${EMULATION_NAME}_handle_option): Handle
"-z unique-symbol" and "-z nounique-symbol".
* ld.texi: Document "-z unique-symbol" and "-z nounique-symbol".
* lexsup.c (elf_static_list_options): Add "-z unique-symbol" and
"-z nounique-symbol".
* testsuite/ld-elf/elf.exp: Add PR ld/26391 tests.
* testsuite/ld-elf/pr26391.nd: New file.
* testsuite/ld-elf/pr26391.out: Likewise.
* testsuite/ld-elf/pr26391a.c: Likewise.
* testsuite/ld-elf/pr26391b.c: Likewise.
* testsuite/ld-elf/pr26391c.c: Likewise.
* testsuite/ld-elf/pr26391d.c: Likewise.
As far as I can tell, the following comment is false nowadays.
/* Calls to m-alloc get turned by sed into xm-alloc. */
Remove it, and call xmalloc.
* ldlex.l (yy_create_string_buffer): Use xmalloc rather than malloc.
* lexsup.c (parse_args): Likewise.
libctf recently changed to make it possible to not emit the CTF
variables section. Make this the default for ld: the variables section
is a simple name -> type mapping, and the names can be quite voluminous.
Nothing in the variables section appears in the symbol table, by
definition, so GDB cannot make use of them: special-purpose projects
that implement their own analogues of symbol table lookup can do so, but
they'll need to tell the linker to emit the variables section after all.
The new --ctf-variables option does this.
The --ctf-share-types option (valid values "share-duplicated" and
"share-unconflicted") allow the caller to specify the CTF link mode.
Most users will want share-duplicated, since it allows for more
convenient debugging: but very large projects composed of many decoupled
components may want to use share-unconflicted mode, which places types
that appear in only one TU into per-TU dicts. (They may also want to
relink the CTF using the ctf_link API and cu-mapping, to make their
"components" larger than a single TU. Right now the linker does not
expose the CU-mapping machinery. Perhaps it should in future to make
this use case easier.)
For now, giving the linker the ability to emit share-duplicated CTF lets
us add testcases for that mode to the testsuite.
ld/
* ldlex.h (option_values) <OPTION_CTF_VARIABLES,
OPTION_NO_CTF_VARIABLES, OPTION_CTF_SHARE_TYPES>: New.
* ld.h (ld_config_type) <ctf_variables, ctf_share_duplicated>:
New fields.
* ldlang.c (lang_merge_ctf): Use them.
* lexsup.c (ld_options): Add ctf-variables, no-ctf-variables,
ctf-share-types.
(parse_args) <OPTION_CTF_VARIABLES, OPTION_NO_CTF_VARIABLES,
OPTION_CTF_SHARE_TYPES>: New cases.
* ld.texi: Document new options.
* NEWS: Likewise.
Change ld --help output to
-d, -dc, -dp Force common symbols to be defined
--dependency-file FILE Write dependency file
instead of
-d, -dc Force common symbols to be defined
--dependency-file FILE, -dp Write dependency file
PR ld/26165
* lexsup.c (ld_options): Correct --dependency-file order.
It's best if help message output does not contain tabs, since we don't
know tab stop settings or even if tabs are handled by the output
device. This reverts some 2020-06-23 changes and fixes the csky help
message.
* lexsup.c (elf_shlib_list_options): Properly format help message.
(elf_plt_unwind_list_options): Likewise.
* emultempl/cskyelf.em (PARSE_AND_LIST_OPTIONS): Likewise.
This patch makes ld accept and ignore -plugin options when configured
with --disable-plugins. The idea is to allow using a linker built
without plugin support with a gcc built with plugin support. Quite
obviously such a combination won't work if using LTO, but gcc has a
habit of passing a bunch of -plugin and -plugin-opt arguments to ld
even when not generating or linking LTO objects.
Why do I want to do this? Well, it lets me and other binutils
developers answer the question as to whether plugin support breaks
binutils in some areas. Which it does for some targets.
* lexsup.c (ld_options): Accept -plugin and -plugin-opt when
!ENABLE_PLUGINS.
* testsuite/lib/ld-lib.exp (check_plugin_api_available): Adjust.
