x86: widen @got{,pcrel} support to PUSH and APX IMUL
With us doing the transformation to an immediate operand for MOV and
various ALU insns, there's little reason to then not support the same
conversion for the other two insns which have respective immediate
operand forms. Unfortunately for IMUL (due to the 0F opcode prefix)
there's no suitable relocation, so the pre-APX forms cannot be marked
for relaxation in the assembler.
"pushl main@GOT(%ebx)" in sysdeps/i386/start.S was assembled to
Linkers in binutils versions older than 2.45 treated it as jmp and relaxed
it to
22c: e9 cf ff ff ff jmp 200 <main>
231: 90 nop
Update elf_i386_convert_load_reloc in binutils versions older than 2.45
to check MODRM for call and jmp to work with i386 glibc assembled with
binutils 2.45 or newer. Do the same in elf_x86_64_convert_load_reloc.
PR ld/32991
* elf32-i386.c (elf_i386_convert_load_reloc): Check MODRM for
call and jmp.
* elf64-x86-64.c (elf_x86_64_convert_load_reloc): Likewise.
H.J. Lu [Thu, 20 Mar 2025 20:16:34 +0000 (13:16 -0700)]
dwarf: Dump .debug_loclists only for DWARF-5
.debug_loclists section is loaded into debug_information as DWARF-5 debug
info and .debug_loc section is loaded into debug_information as pre-DWARF-5
debug info. When dumping .debug_loc section, we should only process
pre-DWARF-5 debug info in debug_information. When dumping .debug_loclists
section, we should only process DWARF-5 info in debug_information.
binutils/
PR binutils/32809
* dwarf.c (display_debug_loc): Dump .debug_loclists only for
DWARF-5.
ld/
PR binutils/32809
* testsuite/ld-x86-64/dwarf4.s: New file.
* testsuite/ld-x86-64/dwarf5a.s: Likewise.
* testsuite/ld-x86-64/dwarf5b.s: Likewise.
* testsuite/ld-x86-64/pr32809.d: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run pr32809.
This puts back %F into translated fatal error messages (and reverts a
few other small changes), to not disturb translation work done for the
2.44 branch.
Simon Marchi [Thu, 20 Feb 2025 15:13:38 +0000 (10:13 -0500)]
gdb/compile: add missing entry in bfd_link_callbacks array
clang 19 fails to build gdb with this error:
/home/simark/src/binutils-gdb/gdb/compile/compile-object-load.c:302:3: error: cannot initialize a member subobject of type 'void (*)(const char *, ...) __attribute__((noreturn))' with an lvalue of type 'void (const char *, ...)'
302 | link_callbacks_einfo, /* einfo */
| ^~~~~~~~~~~~~~~~~~~~
This illustrates that the bfd_link_callbacks array is missing an entry
for the "fatal" callback, add it.
The fatal field was added very recently, in d26161914 ("PR 32603, more
ld -w misbehaviour"). We're lucky that the new callback was marked with
the noreturn attribute and that clang checks that, otherwise this would
have gone unnoticed.
Alan Modra [Sun, 16 Feb 2025 13:04:55 +0000 (23:34 +1030)]
PR 32603, more ld -w misbehaviour
Commit 8d97c1a53f3d claimed to replace all einfo calls using %F with
a call to fatal. It did so only for the ld/ directory. This patch
adds a "fatal" to linker callbacks, and replaces those calls in bfd/
too.
Alan Modra [Thu, 6 Feb 2025 11:16:22 +0000 (21:46 +1030)]
PR 32603, ld -w misbehaviour
ld -w currently causes segmentation faults and other misbehaviour
since it changes einfo with %F in the format string (fatal error) to
not exit. This patch fixes that by introducing a new variant of einfo
called "fatal" that always exits, and replaces all einfo calls using
%F with a call to fatal without the %F. I considered modifying einfo
to inspect the first 2 or 4 chars in the format string, looking for
%F, but decided that was probably a bad idea given that translators
might have moved the %F. It's also a little nicer to inform the
compiler of a function that doesn't return.
The patch also fixes some formatting nits, and makes use of %pA
to print section names in a couple of places in aix.em.
Haochen Jiang [Wed, 19 Mar 2025 08:52:35 +0000 (16:52 +0800)]
x86: Remove AVX10.2 256 bit rounding support
Since we will support 512 bit on both P-core and E-core for AVX10, 256 bit
rounding is not that useful because we currently have rounding feature
directly on E-core now and no need to use 256-bit rounding as somehow
a workaround. This patch will remove all the support and backport to
Binutils 2.44.
H.J. Lu [Thu, 13 Mar 2025 18:52:00 +0000 (11:52 -0700)]
elf: Clear the SEC_ALLOC bit for NOLOAD note sections
When generating an ELF output file, if a note section is marked as
NOLOAD, clear the SEC_ALLOC bit so that it won't be treated as an
SHF_ALLOC section, like a .bss style section.
PR ld/32787
* ld.texi: Update NOLOAD for ELF output files.
* ldlang.c (lang_add_section): Clear the SEC_ALLOC bit for NOLOAD
note sections for ELF output files.
* testsuite/ld-elf/pr32787.d: New file.
* testsuite/ld-elf/pr32787.t: Likewise.
H.J. Lu [Wed, 5 Mar 2025 04:44:11 +0000 (12:44 +0800)]
ld: Pass -Wl,-z,lazy to compiler for i386 lazy binding tests
Pass -Wl,-z,lazy to compiler for i386 tests which require lazy binding
to support compilers which default to non-lazy binding.
PR ld/32762
* testsuite/ld-i386/i386.exp: Pass -Wl,-z,lazy for
"Build ifunc-1a with PIE -z ibtplt" test.
* testsuite/ld-i386/no-plt.exp: Pass -Wl,-z,lazy for
"Build libno-plt-1b.so", "No PLT (dynamic 1a)",
"No PLT (dynamic 1b)", "No PLT (dynamic 1c)",
"No PLT (PIE 1e)", "No PLT (PIE 1f)", "No PLT (PIE 1g)" tests.
projects / thirdparty / binutils-gdb.git / log
