Add a new command line option --discard-sframe to the linker.
This option allows users to prevent the linker from generating an output
.sframe section.
The rationale for this option is: Consider the case when say, the distro
is shipped with SFrame sections in the installed binaries/libraries. A
user application using these installed libraries, but not enabling
.sframe for itself just yet, will see an output .sframe corresponding to
the pulled in libraries. This is "partial" .sframe information for the
application. Adding such an option to the linker, gives user a way to
turn off the .sframe section completely without relying on a linker
script.
Previously, the existing --no-ld-generated-unwind-info option
controlled whether (not just .eh_frame for PLT entries, but also) SFrame
for PLT entries. The new command line option,
--discard-sframe now decouples SFrame from other unwind
formats (like .eh_frame), allowing for more control over the output
binary's SFrame data.
The option is added for architectures that currently support SFrame:
AArch64, s390x, and x86_64.
bfd/
* elf-sframe.c (_bfd_elf_parse_sframe): Mark with SEC_EXCLUDE if
--discard-sframe is in effect.
* elf64-s390.c (elf_s390_create_dynamic_sections): Use
discard_sframe to guard .sframe section creation.
* elfxx-x86.c (_bfd_x86_elf_link_setup_gnu_properties): Likewise.
include/
* bfdlink.h (struct bfd_link_info): Add discard_sframe bitfield.
ld/
* ldlex.h (enum option_values): Add OPTION_NO_LD_SFRAME_INFO.
* lexsup.c (elf_sframe_list_options): New function.
(ld_list_options): Add sframe_info argument. Update callers.
* ld.texi: Update documentation.
* emulparams/sframe-info.sh: New file.
* emultempl/aarch64elf.em: Add --discard-sframe option
listing and handling.
* emulparams/elf64_s390.sh: Likewise.
* emulparams/elf_x86_64.sh: Likewise.
* Makefile.am: Update to handle sframe-info.sh and new list options.
* configure.ac: Handle SFRAME_INFO target variable.
* Makefile.in: Regenerate.
* configure: Regenerate.
ld/testsuite/
* ld-x86-64/x86-64.exp: New test.
* ld-x86-64/sframe-command-line-1.d: New test.
* ld-aarch64/aarch64-elf.exp: New test.
* ld-s390/s390.exp: New test.
* ld-x86-64/x86-64.exp: New test.
* ld-aarch64/sframe-command-line-1.d: New test.
* ld-s390/sframe-command-line-1.d: New test.
* ld-x86-64/sframe-command-line-1.d: New test.
Avoid warnings about invalid escapes in etc/update-copyright.py by
using raw strings, add BinutilsFilter to skip psql.rc and add
"Kalray SA." as another copyright holder.
targ_extra_libpath are for those targets other than the default target
that might have libraries available in the default library search
paths. targ_extra_emuls are for those targets that likely don't.
Sort them so those on the libpath come first. This currently does not
have any effect except for order of compilation of e*.c and the order
printed in ld help messages, but I thought it worth doing anyway.
* configure.ac (all_emuls): Sort targ_extra_libpath before
targ_extra_emuls.
* configure: Regenerate.
With recent gcc versions, implicit function declarations are errors.
We need to ensure that ffs() and strtoull() are declared and correctly
checked for by configure.
strtoull() is not declared on hpux but it's provided by libiberty.
An unnecessary include of strings.h in elf32-xtensa.c is removed.
Approved-By: Jan Beulich <jbeulich@suse.com>
2025-12-14 John David Anglin <danglin@gcc.gnu.org>
bfd/ChangeLog:
* configure.ac: Check for strtoull declaration.
* elf32-xtensa.c: Remove strings.h include.
* configure: Regenerate.
* config.in: Regenerate.
* sysdep.h: Include strings.h and declare strtoull()
if a declaration for it isn't found by configure.
ld/ChangeLog:
* configure.ac: Check for strtoull declaration.
* configure: Regenerate.
* config.in: Regenerate.
* sysdep.h: Declare strtoull() if a declaration for it
isn't found by configure.
On Linux/i386, programs and shared libraries compiled with
-mtls-dialect=gnu may fail silently at run-time against glibc without
the GNU TLS run-time fix for:
https://sourceware.org/bugzilla/show_bug.cgi?id=32996
The glibc version tag, GLIBC_ABI_GNU_TLS, has been added to indicate
that glibc has the working GNU TLS run-time:
commit ed1b7a5a489ab555a27fad9c101ebe2e1c1ba881
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Jul 28 12:16:11 2025 -0700
i386: Add GLIBC_ABI_GNU_TLS version [BZ #33221]
Add the --gnu-tls-tag option to x86-64 ELF linker to add the
GLIBC_ABI_GNU_TLS version dependency in output programs and shared
libraries when linking against glibc if input relocatable object files
call ___tls_get_addr. The output will fail to load and run at run-time
against glibc which doesn't define the GLIBC_ABI_GNU_TLS version.
Add the --enable-gnu-tls-tag configure option to enable --gnu-tls-tag
by default. If unspecified, linker will add the GLIBC_ABI_GNU_TLS
version dependency if input call ___tls_get_addr and libc.so defines
the GLIBC_ABI_GNU2_TLS version.
bfd/
PR ld/33287
* elf-linker-x86.h (elf_linker_x86_params): Add
gnu_tls_version_tag.
* elf32-i386.c (elf_backend_add_glibc_version_dependency): Add
GLIBC_ABI_GNU_TLS support.
* elfxx-x86.c (_bfd_x86_elf_link_check_relocs): Set
has_tls_get_addr_call to 1 if ___tls_get_addr is used.
* elfxx-x86.h (elf_x86_link_hash_table): Add has_tls_get_addr_call.
ld/
PR ld/33287
* Mention --gnu-tls-tag, --no-gnu-tls-tag and --enable-gnu-tls-tag.
* config.in: Regenerated.
* configure: Likewise.
* configure.ac: Add --enable-gnu-tls-tag.
* ld.texi: Document --gnu-tls-tag and --enable-gnu-tls-tag.
* ldlex.h (option_values): Add OPTION_GNU_TLS_VERSION_TAG and
OPTION_NO_GNU_TLS_VERSION_TAG.
* emultempl/elf-i386-glibc.em (elf_i386_glibc_before_parse):
Initialize params.gnu_tls_version_tag.
(PARSE_AND_LIST_LONGOPTS_386): New.
(PARSE_AND_LIST_OPTIONS_386): Likewise.
(PARSE_AND_LIST_ARGS_CASES_386): Likewise.
(PARSE_AND_LIST_LONGOPTS): Append $PARSE_AND_LIST_LONGOPTS_386.
(PARSE_AND_LIST_OPTIONS): Append $PARSE_AND_LIST_OPTIONS_386.
(PARSE_AND_LIST_ARGS_CASES): Append
$PARSE_AND_LIST_ARGS_CASES_386.
* testsuite/ld-i386/gnu-tls-1.s: Likewise.
* testsuite/ld-i386/gnu-tls-1a.rd: Likewise.
* testsuite/ld-i386/gnu-tls-1b.rd: Likewise.
* testsuite/ld-i386/i386.exp: Run PR ld/33287 tests.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
On Linux/x86, programs and shared libraries compiled with
-mtls-dialect=gnu2 may fail silently at run-time against glibc without
the GNU2 TLS run-time fixes for:
https://sourceware.org/bugzilla/show_bug.cgi?id=31501https://sourceware.org/bugzilla/show_bug.cgi?id=31372
A version tag, GLIBC_ABI_GNU2_TLS, has been added to glibc to indicate
that glibc has the working GNU2 TLS run-time. Add the --gnu2-tls-tag
option to i386/x86-64 ELF linker to add the GLIBC_ABI_GNU2_TLS version
dependency in output programs and shared libraries when linking against
glibc if input relocatable object files have R_386_TLS_DESC_CALL or
R_X86_64_TLSDESC_CALL relocation. The output will fail to load and run
at run-time against glibc which doesn't define the GLIBC_ABI_GNU2_TLS
version.
Add the --enable-gnu2-tls-tag configure option to enable --gnu2-tls-tag
by default. If unspecified, linker will add the GLIBC_ABI_GNU2_TLS
version dependency if input object files have R_386_TLS_DESC_CALL or
R_X86_64_TLSDESC_CALL relocation and libc.so defines the GLIBC_ABI_GNU2_TLS
version.
Update elf_link_add_glibc_verneed to properly add the GLIBC_2.36 version
dependency when -z mark-plt -z nopack-relative-relocs passed to x86-64
ELF linker.
bfd/
PR ld/33130
* elf-bfd.h (_bfd_elf_link_add_glibc_version_dependency): Add
a pointer to bool argument.
* elf-linker-x86.h (elf_linker_x86_params): Add
gnu2_tls_version_tag.
* elf32-i386.c (elf_i386_scan_relocs): Set has_tls_desc_call to
1 for R_386_TLS_DESC_CALL.
(elf_i386_add_glibc_version_dependency): New. Undef before
FreeBSD support.
* elf64-x86-64.c (elf_x86_64_scan_relocs): Set has_tls_desc_call
to 1 for R_X86_64_TLSDESC_CALL.
(elf_x86_64_add_glibc_version_dependency): Add GLIBC_ABI_GNU2_TLS
version dependency if GLIBC_ABI_GNU2_TLS dependency isn't disabled
and has_tlsdesc_call isn't 0.
(elf_backend_add_glibc_version_dependency): Undef before FreeBSD
support and redefine for elf32-x86-64.
* elflink.c (elf_link_add_glibc_verneed): Changed to return bool.
Remove the pointer to elf_find_verdep_info argument. Add a
pointer to bool argument, auto_version. Return true if linked
against glibc. Otherwise return false. If the version dependency
is added, set *auto_version to true. If *auto_version is true,
add the version dependency only if libc.so defines the version.
(_bfd_elf_link_add_glibc_version_dependency): Add a pointer to
bool argument and pass it to elf_link_add_glibc_verneed.
(_bfd_elf_link_add_dt_relr_dependency): Pass NULL to
_bfd_elf_link_add_glibc_version_dependency.
* elfxx-x86.h (elf_x86_link_hash_table): Add has_tls_desc_call.
ld/
PR ld/33130
* NEWS: Mention --gnu2-tls-tag, --no-gnu2-tls-tag and
--enable-gnu2-tls-tag.
* config.in: Regenerated.
* configure: Likewise.
* configure.ac: Add --enable-gnu2-tls-tag.
* ld.texi: Document --gnu2-tls-tag/--no-gnu2-tls-tag.
* ldlex.h (option_values): Add OPTION_GNU2_TLS_VERSION_TAG and
OPTION_NO_GNU2_TLS_VERSION_TAG.
* emulparams/elf32_x86_64.sh (EXTRA_EM_FILE): Changed to
"elf-x86-64-glibc".
* emulparams/elf_i386.sh (EXTRA_EM_FILE): Set to "elf-i386-glibc".
* emulparams/elf_i386_fbsd.sh (EXTRA_EM_FILE): New. Set to
"elf-x86".
* emulparams/elf_i386_haiku.sh (EXTRA_EM_FILE): Likewise.
* emulparams/elf_x86_64.sh (EXTRA_EM_FILE): Likewise.
* emulparams/elf_x86_64_fbsd.sh (EXTRA_EM_FILE): New. Set to
"elf-x86-64".
* emulparams/elf_x86_64_haiku.sh (EXTRA_EM_FILE): Likewise.
* (EXTRA_EM_FILE): Likewise.
* (EXTRA_EM_FILE): Likewise.
* emultempl/elf-i386-glibc.em: New file.
* emultempl/elf-x86-64-glibc.em: Likewise.
* emultempl/elf-x86-64.em: Likewise.
* emultempl/elf-x86-glibc.em: Likewise.
* emultempl/elf-x86.em (elf_x86_64_before_parse): Removed.
(LDEMUL_BEFORE_PARSE): Likewise.
(elf_x86_64_before_allocation): Likewise.
(LDEMUL_BEFORE_ALLOCATION): Likewise.
* emultempl/solaris2-x86-64.em: New file.
* testsuite/ld-i386/gnu2-tls-1.s: Likewise.
* testsuite/ld-i386/gnu2-tls-1a.rd: Likewise.
* testsuite/ld-i386/gnu2-tls-1b.rd: Likewise.
* testsuite/ld-x86-64/gnu2-tls-1.s: Likewise.
* testsuite/ld-x86-64/gnu2-tls-1a.rd: Likewise.
* testsuite/ld-x86-64/gnu2-tls-1b.rd: Likewise.
* testsuite/ld-x86-64/mark-plt-2.rd: Likewise.
* testsuite/ld-x86-64/mark-plt-2.s: Likewise.
* testsuite/ld-i386/i386.exp: Run GLIBC_ABI_GNU2_TLS tests.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
As described in PR ld/32580, when using SHELL=/bin/sh or /bin/ksh on
Solaris, the generated linker scripts get corrupted. So far, the only
workaround is to enforce /bin/bash instead.
This is a major nuisance for developers and users alike, so this patch
automates this by overriding SHELL in ld/configure.ac.
Tested on amd64-pc-solaris2.11 in three configurations:
* CONFIG_SHELL unset
* CONFIG_SHELL=/bin/ksh
* CONFIG_SHELL='/bin/bash --norc'
In the first two cases, SHELL was set to /bin/bash as desired, while in
the third it was left unchanged.
2025-07-24 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
ld:
PR ld/32580
* configure.ac <*-*-solaris2*>: Enforce SHELL=/bin/bash.
* configure: Regenerate.
Swap AM_PO_SUBDIRS and ZW_GNU_GETTEXT_SISTER_DIR lines in
*/configure.ac. ZW_GNU_GETTEXT_SISTER_DIR indirectly invokes
AC_REQUIRE(AM_PO_SUBDIRS) so results in AM_PO_SUBDIRS being emitted
before ZW_GNU_GETTEXT_SISTER_DIR if it hasn't already been invoked.
We have a discrepancy with 64-bit BFD handling across our component
subdirectories leading to link failures such as:
ld: ../opcodes/.libs/libopcodes.a(disassemble.o): in function `disassembler': disassemble.c:(.text+0x65): undefined reference to `print_insn_alpha'
ld: disassemble.c:(.text+0x105): undefined reference to `print_insn_ia64'
ld: disassemble.c:(.text+0x11d): undefined reference to `print_insn_loongarch'
ld: disassemble.c:(.text+0x1a1): undefined reference to `print_insn_big_mips'
[...]
with some configurations having a 32-bit host and 64-bit BFD, such as:
`--host=i386-linux-gnu --target=riscv64-linux-gnu --enable-targets=all'.
This is ultimately due to how 64-bit BFD is enabled for bfd/ itself and
other subdirectorses and has been a regression from commit 1d5269c994
("unify 64-bit bfd checks").
For bfd/ the BFD_64_BIT autoconf macro from config/bfd64.m4 is used
combined with this logic in bfd/configure.ac:
case ${host64}-${target64}-${want64} in
*true*)
wordsize=64
bfd64_libs='$(BFD64_LIBS)'
all_backends='$(BFD64_BACKENDS) $(BFD32_BACKENDS)'
[...]
;;
false-false-false)
wordsize=32
all_backends='$(BFD32_BACKENDS)'
;;
esac
where the value of ${wordsize} switches between 32-bit and 64-bit BFD
via these pieces:
#define BFD_ARCH_SIZE @wordsize@
and:
#if BFD_ARCH_SIZE >= 64
#define BFD64
#endif
in bfd/bfd-in.h, which ultimately becomes a part of "bfd.h".
Then ${host64} is determined in bfd/configure.ac from the host's word
size, via the host's pointer size:
if test "x${ac_cv_sizeof_void_p}" = "x8"; then
host64=true
fi
And ${target64} is determined in bfd/configure.ac from the target's word
size:
if test ${target_size} = 64; then
target64=true
fi
Where multiple targets have been requested with `--enable-targets=all'
the presence of any 64-bit target will set "true" here.
Finally ${want64} is set according to `--enable-64-bit-bfd' user option
with an arrangement involving BFD_64_BIT:
BFD_64_BIT
if test $enable_64_bit_bfd = yes ; then
want64=true
else
want64=false
fi
which also, redundantly, checks and sets its result upon the host's word
size. Lastly ${want64} is also selectively set by target fragments in
bfd/config.bfd, which mostly if not completely overlaps with ${target64}
setting as described above.
Conversely other subdirectories only rely on BFD_64_BIT, so they fail to
notice that BFD is 64-bit and do not enable their 64-bit handling where
the host requested is 32-bit and 64-bit BFD has been enabled other than
with `--enable-64-bit-bfd'. One consequence is opcodes/disassemble.c
enables calls to its numerous own 64-bit backends by checking the BFD64
macro from "bfd.h", however does not actually enable said backends in
its Makefile. Hence the link errors quoted above.
Address the problem then by moving the `--enable-64-bit-bfd' option back
to bfd/configure.ac and remove the call to BFD_64_BIT from there and
then rewrite the macro in terms of checking for the presence of BFD64
macro in "bfd.h", which is the canonical way of determining whether BFD
is 64-bit or not.
Rather than running `grep' directly on ../bfd/bfd-in3.h as the opcodes/
fragment used to before the problematic commit:
if grep '#define BFD_ARCH_SIZE 64' ../bfd/bfd-in3.h > /dev/null; then
run the preprocessor on "bfd.h", which allows to invoke the macro from
configure.ac files placed in subdirectories located at deeper levels, by
relying on the preprocessor's search path.
This requires however that the invokers rely on `all-bfd' rather than
`configure-bfd' for their `configure' invocation stage, because "bfd.h"
is made by `make all' rather than `configure' in bfd/.
Do not cache the result of this check however, as reconfiguring a tree
such as to flip `--enable-64-bit-bfd' on or to change a secondary target
may affect BFD64 and we have no access to information about secondary
targets in BFD_64_BIT.
Also remove the ENABLE_BFD_64_BIT automake conditional, as it's not used
anywhere.
Last but not least remove the hack from gdb/configure.ac to fail builds
for `mips*-*-*' hosts where `--enable-targets=all' has been requested,
but `--enable-64-bit-bfd' has not as it's no longer needed. Such builds
complete successfully now, having enabled 64-bit BFD implicitly.
Tested-By: Guinevere Larsen <guinevere@redhat.com>
Tested-By: Luis Machado <luis.machado@arm.com>
Approved-By: Alan Modra <amodra@gmail.com>
Approved-By: Luis Machado <luis.machado@arm.com>
The is patch adds a new ld build-id computation mode, "xx", using
xxhash in its 128-bit mode. The patch prereqs the xxhash-devel
headers being installed, and uses the "all-inlined" model, so no
run-time or link-time library dependence exists.
The xxhash mode performs well, saving roughly 20% of total userspace
run time from an ld job over a 800MB shared library relative to sha1.
128 bits of good hash should be collision-resistant to a number of
distinct binaries that numbers in the 2**32 - 2**64 range, even if not
"crypto" level hash. Confirmations of this are in progress.
ld/configury: add --with-xxhash mode, different from gdb case
because only using it in inline mode
ld/ldbuildid.c: add "xx" mode, #if WITH_XXHASH
ld/NEWS, ld.texi: mention new option
ld/lexsup.c: add enumeration of --build-id STYLES to --help
ld/testsuite/ld-elf/build-id.exp: add test case for 0xHEX case
and conditional for xx case;
also, simply tcl list syntax
https://inbox.sourceware.org/binutils/20240917201509.GB26396@redhat.com/
Signed-off-by: Frank Ch. Eigler <fche@redhat.com>
Add --enable-mark-plt linker configure option to mark PLT entries with
DT_X86_64_PLT, DT_X86_64_PLTSZ and DT_X86_64_PLTENT dynamic tags by
default.
* NEWS: Mention -z mark-plt/-z nomark-plt and --enable-mark-plt.
* config.in: Regenerated.
* configure: Likewise.
* configure.ac: Add --enable-mark-plt.
(DEFAULT_LD_Z_MARK_PLT): New AC_DEFINE_UNQUOTED.
* emulparams/x86-64-plt.sh (PARSE_AND_LIST_OPTIONS_X86_64_PLT):
Support DEFAULT_LD_Z_MARK_PLT.
* emultempl/elf-x86.em (elf_x86_64_before_parse): New function.
(LDEMUL_BEFORE_PARSE): New. Set to elf_x86_64_before_parse for
x86-64 targets.
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.
* configure.ac (stpcpy): AC_CHECK_DECLS.
* sysdep.h (stpcpy): Add fallback declaraion.
* config.in: Regenerate.
* configure: Regenerate.
* emultempl/pe.em (open_dynamic_archive): Use
stpcpy rather than sprintf plus strlen.
* emultempl/pep.em (open_dynamic_archive): Likewise.
* emultempl/xtensaelf.em (elf_xtensa_before_allocation): Use
auto rather than malloc'd buffer. Use sprintf count.
* ldelf.c (ldelf_search_needed): Use memcpy in place of sprintf.
* pe-dll.c (pe_process_import_defs): Use string already formed
for alias match rather than recreating.
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.
The linker merges all the input .sframe sections. When merging, the
linker verifies that all the input .sframe sections have the same
abi/arch.
The linker uses libsframe library to perform key actions on the
.sframe sections - decode, read, and create output data. This
implies buildsystem changes to make and install libsframe before
libbfd.
The linker places the output .sframe section in a new segment of its
own: PT_GNU_SFRAME. A new segment is not added, however, if the
generated .sframe section is empty.
When a section is discarded from the final link, the corresponding
entries in the .sframe section for those functions are also deleted.
The linker sorts the SFrame FDEs on start address by default and sets
the SFRAME_F_FDE_SORTED flag in the .sframe section.
This patch also adds support for generation of SFrame unwind
information for the .plt* sections on x86_64. SFrame unwind info is
generated for IBT enabled PLT, lazy/non-lazy PLT.
The existing linker option --no-ld-generated-unwind-info has been
adapted to include the control of whether .sframe unwind information
will be generated for the linker generated sections like PLT.
Changes to the linker script have been made as necessary.
ChangeLog:
* Makefile.def: Add install dependency on libsframe for libbfd.
* Makefile.in: Regenerated.
* bfd/Makefile.am: Add elf-sframe.c
* bfd/Makefile.in: Regenerated.
* bfd/bfd-in2.h (SEC_INFO_TYPE_SFRAME): Regenerated.
* bfd/configure: Regenerate.
* bfd/configure.ac: Add elf-sframe.lo.
* bfd/elf-bfd.h (struct sframe_func_bfdinfo): New struct.
(struct sframe_dec_info): Likewise.
(struct sframe_enc_info): Likewise.
(struct elf_link_hash_table): New member for encoded .sframe
object.
(struct output_elf_obj_tdata): New member.
(elf_sframe): New access macro.
(_bfd_elf_set_section_sframe): New declaration.
* bfd/elf.c (get_segment_type): Handle new segment
PT_GNU_SFRAME.
(bfd_section_from_phdr): Likewise.
(get_program_header_size): Likewise.
(_bfd_elf_map_sections_to_segments): Likewise.
* bfd/elf64-x86-64.c (elf_x86_64_link_setup_gnu_properties): Add
contents to the .sframe sections or .plt* entries.
* bfd/elflink.c (elf_section_ignore_discarded_relocs): Handle
SEC_INFO_TYPE_SFRAME.
(_bfd_elf_default_action_discarded): Handle .sframe section.
(elf_link_input_bfd): Merge .sframe section.
(bfd_elf_final_link): Write the output .sframe section.
(bfd_elf_discard_info): Handle discarding .sframe section.
* bfd/elfxx-x86.c (_bfd_x86_elf_size_dynamic_sections): Create
.sframe section for .plt and .plt.sec.
(_bfd_x86_elf_finish_dynamic_sections): Handle .sframe from
.plt* sections.
* bfd/elfxx-x86.h (PLT_SFRAME_FDE_START_OFFSET): New
definition.
(SFRAME_PLT0_MAX_NUM_FRES): Likewise.
(SFRAME_PLTN_MAX_NUM_FRES): Likewise.
(struct elf_x86_sframe_plt): New structure.
(struct elf_x86_link_hash_table): New member.
(struct elf_x86_init_table): New members for .sframe
creation.
* bfd/section.c: Add new definition SEC_INFO_TYPE_SFRAME.
* binutils/readelf.c (get_segment_type): Handle new segment
PT_GNU_SFRAME.
* ld/ld.texi: Update documentation for
--no-ld-generated-unwind-info.
* ld/scripttempl/elf.sc: Support .sframe sections.
* ld/Makefile.am (TESTSFRAMELIB): Use it.
(check-DEJAGNU): Likewise.
* ld/Makefile.in: Regenerated.
* ld/configure.ac (TESTSFRAMELIB): Set to the .so or .a like TESTBFDLIB.
* ld/configure: Regenerated.
* bfd/elf-sframe.c: New file.
include/ChangeLog:
* elf/common.h (PT_GNU_SFRAME): New definition.
* elf/internal.h (struct elf_segment_map): Handle new segment
type PT_GNU_SFRAME.
ld/testsuite/ChangeLog:
* ld/testsuite/ld-bootstrap/bootstrap.exp: Add SFRAMELIB.
* ld/testsuite/ld-aarch64/aarch64-elf.exp: Add new test
sframe-simple-1.
* ld/testsuite/ld-aarch64/sframe-bar.s: New file.
* ld/testsuite/ld-aarch64/sframe-foo.s: Likewise.
* ld/testsuite/ld-aarch64/sframe-simple-1.d: Likewise.
* ld/testsuite/ld-sframe/sframe-empty.d: New test.
* ld/testsuite/ld-sframe/sframe-empty.s: New file.
* ld/testsuite/ld-sframe/sframe.exp: New testsuite.
* ld/testsuite/ld-x86-64/sframe-bar.s: New file.
* ld/testsuite/ld-x86-64/sframe-foo.s: Likewise.
* ld/testsuite/ld-x86-64/sframe-simple-1.d: Likewise.
* ld/testsuite/ld-x86-64/sframe-plt-1.d: Likewise.
* ld/testsuite/ld-x86-64/sframe-simple-1.d: Likewise.
* ld/testsuite/ld-x86-64/x86-64.exp: Add new tests -
sframe-simple-1, sframe-plt-1.
* ld/testsuite/lib/ld-lib.exp: Add new proc to check if
assembler supports SFrame section.
* ld/testsuite/ld-sframe/discard.d: New file.
* ld/testsuite/ld-sframe/discard.ld: Likewise.
* ld/testsuite/ld-sframe/discard.s: 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
...
```
Using AS_IF rather than shell "if" is recommended for conditionals
that contain non-trivial autoconf macros, because autoconf will emit
any AC_REQUIREd autoconf macro expansions outside of the conditional.
This makes them available elsewhere in the configure script.
binutils/
* configure.ac (msgpack): Use "AS_IF" rather than "if".
* configure: Regenerate.
ld/
* configure.ac (jansson): Use "AS_IF" rather than "if".
* configure: Regenerate.
sbrk hasn't been used in binutils/ or ld/ for quite some time (so the
PR was fixed a while ago). Tidy up configury.
PR 17122
binutils/
* configure.ac: Don't check for sbrk.
* sysdep.h (sbrk): Don't supply fallback declaration.
* config.in: Regenerate.
* configure: Regenerate.
ld/
* configure.ac: Don't check for sbrk.
* config.in: Regenerate.
* configure: Regenerate.
PR 29263
* configure.ac: Move HPPA specific code from here...
* configure.tgt: ... to here. Add similar code for MIPS.
Move code for CRIS, MIPS and HPPA to block at start of file.
* configure: Regenerate.
PR 29263
* configure.ac (ac_default_ld_warn_execstack): Default to 'no' for
HPPA targets.
(ac_default_ld_warn_rwx_segments): Likewise.
* configure: Regenerate.
* testsuite/ld-elf/elf.exp: Add the --warn-execstack command line
option to the command line when running execstack tests for the
HPPA target.
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.
Move the 64-bit bfd logic out of bfd/configure.ac and into bfd64.m4
under config so it can be shared between all the other subdirs.
This replaces want64 with enable_64_bit_bfd which was already being
declared, but not used directly.
