Nick Alcock [Mon, 23 Jan 2023 13:11:32 +0000 (13:11 +0000)]
libctf: fix assertion failure with no system qsort_r
If no suitable qsort_r is found in libc, we fall back to an
implementation in ctf-qsort.c. But this implementation routinely calls
the comparison function with two identical arguments. The comparison
function that ensures that the order of output types is stable is not
ready for this, misinterprets it as a type appearing more that once (a
can-never-happen condition) and fails with an assertion failure.
Fixed, audited for further instances of the same failure (none found)
and added a no-qsort test to my regular testsuite run.
libctf/:
PR libctf/30013
* ctf-dedup.c (sort_output_mapping): Inputs are always equal to
themselves.
Alan Modra [Tue, 21 Mar 2023 23:43:46 +0000 (10:13 +1030)]
coff_get_normalized_symtab bfd_release
We can't free "internal" on errors, since bfd_coff_swap_sym_in may
call bfd_alloc. For example, _bfd_XXi_swap_sym_in may even create new
sections, which use bfd_alloc'd memory. If "internal" is freed, all
more recently bfd_alloc'd memory is also freed.
* coffgen.c (coff_get_normalized_symtab): Don't bfd_release on
error.
Alan Modra [Wed, 15 Mar 2023 07:37:44 +0000 (18:07 +1030)]
PR30217, dynamic relocations using local dynamic symbols
glibc's ld.so ignores local dynamic symbols. It's been that way
forever. We therefore can't use them on dynamic relocations. Fixing
that problem uncovered another problem in sorting of dynamic relocs,
caused no doubt by copying make_iplt_section (where we don't want
reloc sorting by the generic gold function, we want iplt relocs last)
to make_lplt_section (where we do want sorting).
PR 30217
* powerpc.cc (branch_needs_plt_entry): New function.
(Target_powerpc::plt_off): Use it here..
(Target_powerpc::Scan::global): ..and here to correct PLT16 reloc
handling for forced-local global symbols.
(Output_data_plt_powerpc::add_entry): Rename "stash"
parameter "is_local". Emit relative relocs for globals that
are forced local, and don't set_needs_dynsym_entry.
(Target_powerpc::make_lplt_section): Don't create a separate
reloc section, use rela_dyn.
(Target_powerpc::make_brlt_section): Likewise.
Alan Modra [Mon, 6 Mar 2023 00:13:53 +0000 (10:43 +1030)]
PR30198, Assertion and segfault when linking x86_64 elf and coff
PR 30198
* coff-x86_64.c (coff_amd64_reloc): Set *error_message when
returning bfd_reloc_dangerous. Also check that __ImageBase is
defined before accessing h->u.def.
Alan Modra [Thu, 23 Feb 2023 07:53:12 +0000 (18:23 +1030)]
PR30155, ld segfault in _bfd_nearby_section
The segfault was a symptom of messing with the absolute section next
field, confusing bfd_section_removed_from_list in linker.c:fix_syms.
That's not all that was going wrong. The INSERT list of output
sections was being inserted into itself, ie. lost from the main
list of linker statements.
PR 30155
* ldlang.c (process_insert_statements): Handle pathological
case of the insert script being inserted before the first
output section statement in the default script.
(output_prev_sec_find): Don't test section owner here.
(insert_os_after): Change parameter to a list union pointer.
(lang_insert_orphan): Test section owner here and adjust
insert_os_after call.
Alan Modra [Thu, 16 Feb 2023 10:17:44 +0000 (20:47 +1030)]
PR30046, power cmpi leads to unknown architecture
PowerPC ELF always uses bfd_arch_powerpc, so we shouldn't allow the
gas -mpwr, -mpwr2 or -mpwrx options to choose bfd_arch_rs6000.
Given the possible values of ppc_cpu, I think the as_fatal at the end
of ppc_arch will never be reached, so it can be deleted and the code
simplified a little.
PR 30046
* config/tc-ppc.c (ppc_arch): Return bfd_arch_powerpc for ELF.
Delete dead code.
Alan Modra [Mon, 6 Feb 2023 02:16:52 +0000 (12:46 +1030)]
ppc32 and "LOAD segment with RWX permissions"
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.
Jan Beulich [Tue, 14 Feb 2023 07:35:02 +0000 (08:35 +0100)]
gas: correct symbol name comparison in .startof./.sizeof. handling
In 162c6aef1f3a ("gas: fold symbol table entries generated for
.startof.() / .sizeof.()") I screwed up quite badly, inverting the case
sensitive and case insensitive comparison functions.
Clément Chigot [Tue, 3 Jan 2023 13:24:43 +0000 (14:24 +0100)]
configure: remove dependencies on gmp and mpfr when gdb is disabled
Since 991180627851801f1999d1ebbc0e569a17e47c74, the configure checks
about GMP and MPFR for gdb builds have been moved to the toplevel
configure.
However, it doesn't take into account the --disable-gdb option. Meaning
that a build without gdb will require these libraries even if not
needed.
ChangeLog:
* configure.ac: Skip GMP and MPFR when --disable-gdb is
provided.
* configure: Regenerate.
bpf: fix error conversion from long unsigned int to unsigned int [-Werror=overflow]
Regenerating BPF target using the maintainer mode emits:
.../opcodes/bpf-opc.c:57:11: error: conversion from ‘long unsigned int’ to ‘unsigned int’ changes value from ‘18446744073709486335’ to ‘4294902015’ [-Werror=overflow]
57 | 64, 64, 0xffffffffffff00ff, { { F (F_IMM32) }, { F (F_OFFSET16) }, { F (F_SRCLE) }, { F (F_OP_CODE) }, { F (F_DSTLE) }, { F (F_OP_SRC) }, { F (F_OP_CLASS) }, { 0 } }
The use of a narrow size to handle the mask CGEN in instruction format
is causing this error. Additionally eBPF `call' instructions
constructed by expressions using symbols (BPF_PSEUDO_CALL) emits
annotations in `src' field of the instruction, used to identify BPF
target endianness.
cpu/
* bpf.cpu (define-call-insn): Remove `src' field from
instruction mask.
include/
*opcode/cge.h (CGEN_IFMT): Adjust mask bit width.
Jan Beulich [Tue, 31 Jan 2023 08:47:22 +0000 (09:47 +0100)]
RISC-V: make C-extension JAL available again for (32-bit) assembly
Along with the normal JAL alias, the C-extension one should have been
moved as well by 839189bc932e ("RISC-V: re-arrange opcode table for
consistent alias handling"), for the assembler to actually be able to
use it where/when possible.
Since neither this nor any other compressed branch insn was being tested
so far, take the opportunity and introduce a new testcase covering those.
Indu Bhagat [Thu, 19 Jan 2023 07:17:49 +0000 (23:17 -0800)]
toplevel: Makefile.def: add install-strip dependency on libsframe
As noted in PR libsframe/30014 - FTBFS: install-strip fails because
bfdlib relinks and fails to find libsframe, the install time
dependencies of libbfd need to be updated.
PR libsframe/30014
* Makefile.def: Reflect that libsframe needs to installed before
libbfd. Reorder a bit to better track libsframe dependencies.
* Makefile.in: Regenerate.
Enze Li [Sat, 14 Jan 2023 03:33:48 +0000 (11:33 +0800)]
libctf: update regexp to allow makeinfo to build document
While trying to build gdb on latest openSUSE Tumbleweed, I noticed the
following warning,
checking for makeinfo... makeinfo --split-size=5000000
configure: WARNING:
*** Makeinfo is too old. Info documentation will not be built.
then I checked the version of makeinfo, it said,
======
$ makeinfo --version
texi2any (GNU texinfo) 7.0.1
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
======
After digging a little bit, it became quite obvious that a dot is
missing in regexp that makes it impossible to match versions higher than
7.0, and here's the solution:
- | egrep 'texinfo[^0-9]*(6\.[3-9]|[7-9][0-9])' >/dev/null 2>&1; then
+ | egrep 'texinfo[^0-9]*(6\.[3-9]|[7-9]\.[0-9])' >/dev/null 2>&1; then
However, Eli pointed out that the solution above has another problem: it
will stop working when Texinfo 10.1 will be released. Meanwhile, he
suggested to solve this problem permanently. That is, we don't care
about the minor version for Texinfo > 6.9, we only care about the major
version.
In this way, the problem will be resolved permanently, thanks to Eli.
libctf/ChangeLog:
* configure: Regenerated.
* configure.ac: Update regexp to match versions higher than 7.0.
ARM: Fix ld bloat introduced between binutils-2.38 and 2.39
Since commit 9833b7757d24, "PR28824, relro security issues",
ELF_MAXPAGESIZE matters much more, with regards to layout of
the linked file. That commit fixed an actual bug, but also
exposes a problem for targets were that value is too high.
For example, for ARM(32, a.k.a. "Aarch32") specifically
bfd_arch_arm, it's set to 64 KiB, making all Linux(/GNU)
targets pay an extra amount of up to 60 KiB of bloat in
DSO:s and executables. This matters when there are many
such files, and where storage is expensive.
It's *mostly* bloat when using a Linux kernel, as ARM(32) is
a good example of an target where ELF_MAXPAGESIZE is set to
an extreme value for an obscure corner-case. The ARM
(32-bit) kernel has 4 KiB pages, has had that value forever,
and can't be configured to any other value. The use-case is
IIUC "Aarch32" emulation on an "Aarch64" (arm64) kernel, but
not just that, but a setup where the Linux page-size is
configured to something other than the *default* 4 KiB. Not
sure there actually any such systems in use, again with
both Aarch32 compatibility support and a non-4KiB pagesize,
with all the warnings in the kernel config and requiring the
"EXPERT" level set on.
So, let's do like x86-64 in a2267dbfc9e1 "x86-64: Use only
one default max-page-size" and set ELF_MAXPAGESIZE to 4096.
Many tests reflect a setting of ELF_MAXPAGESIZE to 64 KiB.
With ELF_MAXPAGESIZE changed to 4 KiB, layout is sometimes
different and symbols end up in other places. Avoid churn
and regexpification of old test patterns by passing the
max-page-size setting active at the time.
ld/testsuite:
* testsuite/ld-arm/arm-elf.exp,
testsuite/ld-arm/non-contiguous-arm2.d,
testsuite/ld-arm/non-contiguous-arm3.d,
testsuite/ld-arm/non-contiguous-arm5.d,
testsuite/ld-arm/non-contiguous-arm6.d,
testsuite/ld-arm/thumb-plt-got.d, testsuite/ld-arm/thumb-plt.d:
Pass -z max-page-size=0x10000 explicitly to test that rely on
that value in output-matching patterns.
(cherry picked from commit b305015577bb92d3041e55a72ca8cd43f7c05748)
projects / thirdparty / binutils-gdb.git / log
