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DW_FORM_loclistx format attributes.
PR 29424
* dwarf2.c (read_attribute_value): Handle DW_FORM_rnglistx and
DW_FORM_loclistx.
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It's possible for relax_delete_bytes to be called with section
contents NULL, as demonstrated by the testcase in this PR.
PR 16005
* elf32-avr.c (elf32_avr_relax_delete_bytes): Get section contents
if not already available.
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Some R_LARCH_64 in section .eh_frame will to generate
R_LARCH_NONE, we change relocation to R_LARCH_32_PCREL
from R_LARCH_64 in setction .eh_frame and not generate
dynamic relocation for R_LARCH_32_PCREL.
Add New relocate type R_LARCH_32_PCREL for .eh_frame.
include/elf/
loongarch.h
bfd/
bfd/bfd-in2.h
libbfd.h
reloc.c
elfxx-loongarch.c
elfnn-loongarch.c
gas/config/
tc-loongarch.c
binutils/
readelf.c
ld/testsuite/ld-elf/
eh5.d
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Delete R_LARCH_IRELATIVE from dynamic loader (glibc ld.so) when
loading lazy function (rela.plt section).
In dynamic programes, move ifunc dynamic relocate info to section
srelgot from srelplt.
bfd/
elfnn-loongarch.c
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Define new reloc types according to linker needs.
include/elf/
loongarch.h
bfd/
bfd-in2.h
libbfd.h
reloc.c
elfnn-loongarch.c
elfxx-loongarch.c
elfxx-loongarch.h
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We can't use the PLT entry as the function address for PIC since the PIC
register may not be set up properly for indirect call.
bfd/
PR ld/27998
* elf32-i386.c (elf_i386_relocate_section): Don't allow GOTOFF
relocation against IFUNC symbol for PIC.
ld/
PR ld/27998
* testsuite/ld-i386/pr27998a.d: Replace -shared with -e bar.
* testsuite/ld-i386/pr27998b.d: Expect a linker error.
* testsuite/ld-ifunc/ifunc-2-i386-now.d: Updated.
* testsuite/ld-ifunc/ifunc-2-local-i386-now.d: Likewise.
* testsuite/ld-ifunc/ifunc-2-i386.s: Replace @GOTOFF with @GOT.
* testsuite/ld-ifunc/ifunc-2-local-i386.s: Likewise.
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elf64-ppc.c:11673:33: error: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘bfd_vma’ {aka ‘long long unsigned int’} [-Werror=format=]
11673 | fprintf (stderr, "offset = %#lx:", stub_entry->stub_offset);
| ~~~^ ~~~~~~~~~~~~~~~~~~~~~~~
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| | bfd_vma {aka long long unsigned int}
| long unsigned int
| %#llx
* elf64-ppc.c (dump_stub): Use BFD_VMA_FMT.
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Since glibc 2.36 will issue warnings for copy relocation against
protected symbols and non-canonical reference to canonical protected
functions, change the linker to always disallow such relocations.
bfd/
* elf32-i386.c (elf_i386_scan_relocs): Remove check for
elf_has_indirect_extern_access.
* elf64-x86-64.c (elf_x86_64_scan_relocs): Likewise.
(elf_x86_64_relocate_section): Remove check for
elf_has_no_copy_on_protected.
* elfxx-x86.c (elf_x86_allocate_dynrelocs): Check for building
executable instead of elf_has_no_copy_on_protected.
(_bfd_x86_elf_adjust_dynamic_symbol): Disallow copy relocation
against non-copyable protected symbol.
* elfxx-x86.h (SYMBOL_NO_COPYRELOC): Remove check for
elf_has_no_copy_on_protected.
ld/
* testsuite/ld-i386/i386.exp: Expect linker error for PR ld/17709
test.
* testsuite/ld-i386/pr17709.rd: Removed.
* testsuite/ld-i386/pr17709.err: New file.
* testsuite/ld-x86-64/pr17709.rd: Removed.
* testsuite/ld-x86-64/pr17709.err: New file.
* testsuite/ld-x86-64/pr28875-func.err: Updated.
* testsuite/ld-x86-64/x86-64.exp: Expect linker error for PR
ld/17709 test. Add tests for function pointer against protected
function.
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Call _bfd_elf_symbol_refs_local_p with local_protected==true. This has
2 noticeable effects for -shared:
* GOT-generating relocations referencing a protected data symbol no
longer lead to a GLOB_DAT (similar to a hidden symbol).
* Direct access relocations (e.g. R_X86_64_PC32) no longer has the
confusing diagnostic below.
__attribute__((visibility("protected"))) void *foo() {
return (void *)foo;
}
// gcc -fpic -shared -fuse-ld=bfd
relocation R_X86_64_PC32 against protected symbol `foo' can not be used when making a shared object
The new behavior matches arm, aarch64 (commit
83c325007c5599fa9b60b8d5f7b84842160e1d1b), and powerpc ports, and other
linkers: gold and ld.lld.
Note: if some code tries to use direct access relocations to take the
address of foo, the pointer equality will break, but the error should be
reported on the executable link, not on the innocent shared object link.
glibc 2.36 will give a warning at relocation resolving time.
With this change, `#define elf_backend_extern_protected_data 1` is no
longer effective. Just remove it.
Remove the test "Run protected-func-1 without PIE" since -fno-pic
address taken operation in the executable doesn't work with protected
symbol in a shared object by default. Similarly, remove
protected-data-1a and protected-data-1b. protected-data-1b can be made
working by removing HAVE_LD_PIE_COPYRELOC from GCC
(https://sourceware.org/pipermail/gcc-patches/2022-June/596678.html).
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The Linux kernel can dump memory tag segments to a core file, one segment
per mapped range. The format and documentation can be found in the Linux
kernel tree [1].
The following patch adjusts bfd and binutils so they can handle this new
segment type and display it accordingly. It also adds code required so GDB
can properly read/dump core file data containing memory tags.
Upon reading, each segment that contains memory tags gets mapped to a
section named "memtag". These sections will be used by GDB to lookup the tag
data. There can be multiple such sections with the same name, and they are not
numbered to simplify GDB's handling and lookup.
There is another patch for GDB that enables both reading
and dumping of memory tag segments.
Tested on aarch64-linux Ubuntu 20.04.
[1] Documentation/arm64/memory-tagging-extension.rst (Core Dump Support)
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Only check invalid relocation against protected symbol defined in shared
object.
bfd/
PR ld/29377
* elf32-i386.c (elf_i386_scan_relocs): Only check invalid
relocation against protected symbol defined in shared object.
* elf64-x86-64.c (elf_x86_64_scan_relocs): Likewise.
ld/
PR ld/29377
* testsuite/ld-elf/linux-x86.exp: Run PR ld/29377 tests.
* testsuite/ld-elf/pr29377a.c: New file.
* testsuite/ld-elf/pr29377b.c: Likewise.
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The bug testcase uses an output section named .rel or .rela which has
input .data sections mapped to it. The input .data section has
relocations. When counting output relocations SHT_REL and SHT_RELA
section reloc_count is ignored, with the justification that reloc
sections themselves can't have relocations and some backends use
reloc_count in reloc sections. However, the test wrongly used the
output section type (which normally would match input section type).
Fix that. Note that it is arguably wrong for ld to leave the output
.rel/.rela section type as SHT_REL/SHT_RELA when non-empty non-reloc
sections are written to it, but I'm not going to change that since it
might be useful to hand-craft relocs in a data section that is then
written to a SHT_REL/SHT_RELA output section.
PR 29355
* elflink.c (bfd_elf_final_link): Use input section type rather
than output section type to determine whether to exclude using
reloc_count from that section.
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This commit adds Zfhmin and Zhinxmin extensions (subsets of Zfh and
Zhinx extensions, respectively). In the process supporting Zfhmin and
Zhinxmin extension, this commit also changes how instructions are
categorized considering Zfhmin, Zhinx and Zhinxmin extensions.
Detailed changes,
* From INSN_CLASS_ZFH to INSN_CLASS_ZFHMIN:
flh, fsh, fmv.x.h and fmv.h.x.
* From INSN_CLASS_ZFH to INSN_CLASS_ZFH_OR_ZHINX:
fmv.h.
* From INSN_CLASS_ZFH_OR_ZHINX to INSN_CLASS_ZFH_OR_ZHINX:
fneg.h, fabs.h, fsgnj.h, fsgnjn.h, fsgnjx.h,
fadd.h, fsub.h, fmul.h, fdiv.h, fsqrt.h, fmin.h, fmax.h,
fmadd.h, fnmadd.h, fmsub.h, fnmsub.h,
fcvt.w.h, fcvt.wu.h, fcvt.h.w, fcvt.h.wu,
fcvt.l.h, fcvt.lu.h, fcvt.h.l, fcvt.h.lu,
feq.h, flt.h, fle.h, fgt.h, fge.h,
fclass.h.
* From INSN_CLASS_ZFH_OR_ZHINX to INSN_CLASS_ZFHMIN_OR_ZHINXMIN:
fcvt.s.h and fcvt.h.s.
* From INSN_CLASS_D_AND_ZFH_INX to INSN_CLASS_ZFHMIN_AND_D:
fcvt.d.h and fcvt.h.d.
* From INSN_CLASS_Q_AND_ZFH_INX to INSN_CLASS_ZFHMIN_AND_Q:
fcvt.q.h and fcvt.h.q.
bfd/ChangeLog:
* elfxx-riscv.c (riscv_implicit_subsets): Change implicit
subsets. Zfh->Zicsr is not needed and Zfh->F is replaced with
Zfh->Zfhmin and Zfhmin->F. Zhinx->Zicsr is not needed and
Zhinx->Zfinx is replaced with Zhinx->Zhinxmin and
Zhinxmin->Zfinx.
(riscv_supported_std_z_ext): Added zfhmin and zhinxmin.
(riscv_multi_subset_supports): Rewrite handling for new
instruction classes.
(riscv_multi_subset_supports_ext): Updated.
(riscv_parse_check_conflicts): Change error message to include
zfh and zfhmin extensions.
gas/ChangeLog:
* testsuite/gas/riscv/zfhmin-d-insn-class-fail.s: New complex
error handling test.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-1.d: Likewise.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-1.l: Likewise.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-2.d: Likewise.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-2.l: Likewise.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-3.d: Likewise.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-3.l: Likewise.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-4.d: Likewise.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-4.l: Likewise.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-5.d: Likewise.
* testsuite/gas/riscv/zfhmin-d-insn-class-fail-5.l: Likewise.
* testsuite/gas/riscv/zhinx.d: Renamed from fp-zhinx-insns.d
and refactored.
* testsuite/gas/riscv/zhinx.s: Likewise.
include/ChangeLog:
* opcode/riscv.h (enum riscv_insn_class): Removed INSN_CLASS_ZFH,
INSN_CLASS_D_AND_ZFH_INX and INSN_CLASS_Q_AND_ZFH_INX. Added
INSN_CLASS_ZFHMIN, INSN_CLASS_ZFHMIN_OR_ZHINXMIN,
INSN_CLASS_ZFHMIN_AND_D and INSN_CLASS_ZFHMIN_AND_Q.
opcodes/ChangeLog:
* riscv-opc.c (riscv_opcodes): Change instruction classes for
Zfh and Zfhmin instructions. Fix `fcvt.h.lu' instruction
(two operand variant) mask.
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This commit fixes how instructions are masked on Zhinx+Z{d,q}inx.
fcvt.h.d and fcvt.d.h require ((D&&Zfh)||(Zdinx&&Zhinx)) and
fcvt.h.q and fcvt.q.h require ((Q&&Zfh)||(Zqinx&&Zhinx)).
bfd/ChangeLog:
* elfxx-riscv.c (riscv_multi_subset_supports): Fix feature gate
on INSN_CLASS_{D,Q}_AND_ZFH_INX.
(riscv_multi_subset_supports_ext): Fix feature gate diagnostics
on INSN_CLASS_{D,Q}_AND_ZFH_INX.
gas/ChangeLog:
* testsuite/gas/riscv/fp-zhinx-insns.d: Add Zqinx to -march
for proper testing.
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commit 74e315dbfe5200c473b226e937935fb8ce391489
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 13 19:46:04 2021 -0800
elf: Set p_align to the minimum page size if possible
may ignore p_align of PT_GNU_STACK when copying ELF program header if
the maximum page size is larger than p_align of PT_LOAD segments. Copy
p_align of PT_GNU_STACK since p_align of PT_GNU_STACK describes stack
alignment, not page size,
PR binutils/29319
* elf.c (copy_elf_program_header): Copy p_align of PT_GNU_STACK
for stack alignment.
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Because ratified Zihintpause extension has a version number of 2.0
(not 1.0), we should update the number.
bfd/ChangeLog:
* elfxx-riscv.c (riscv_supported_std_z_ext): Update version
number of Zihintpause extension.
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