| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
This patch defines a bunch of new functions to use in the BFD target
structs rather than casting bfd_false or bfd_true and similar stub
functions. I've also renamed the stub functions to reflect their
parameters and put "error" in the name if they set bfd_error. The
latter change is important since there were quite a few uses of
bfd_false where setting bfd_error was inappropriate, for example in
elf_backend_allow_non_load_phdr and is_target_special_symbol.
* libbfd.c (_bfd_bool_bfd_false_error): Rename from bfd_false.
(_bfd_bool_bfd_true): Rename from bfd_true.
(_bfd_ptr_bfd_null_error): Rename from bfd_nullvoidptr.
(_bfd_int_bfd_0): Rename from bfd_0.
(_bfd_uint_bfd_0): Rename from bfd_0u.
(_bfd_long_bfd_0): Rename from bfd_0l.
(_bfd_long_bfd_n1_error): Rename from _bfd_n1.
(_bfd_void_bfd): Rename from bfd_void.
(_bfd_bool_bfd_false, _bfd_bool_bfd_asymbol_false),
(_bfd_bool_bfd_link_false_error),
(_bfd_bool_bfd_link_true, _bfd_bool_bfd_bfd_true),
(_bfd_bool_bfd_uint_true, _bfd_bool_bfd_ptr_true),
(_bfd_bool_bfd_asection_bfd_asection_true),
(_bfd_bool_bfd_asymbol_bfd_asymbol_true),
(_bfd_void_bfd_link, _bfd_void_bfd_asection): New functions.
* archive.c (_bfd_noarchive_get_elt_at_index),
(_bfd_noarchive_openr_next_archived_file),
(_bfd_noarchive_construct_extended_name_table),
(_bfd_noarchive_write_ar_hdr, _bfd_noarchive_truncate_arname),
(_bfd_noarchive_write_armap): New functions.
* archures.c (_bfd_nowrite_set_arch_mach): New function.
* coff-alpha.c (alpha_ecoff_swap_coff_aux_in),
(alpha_ecoff_swap_coff_sym_in, alpha_ecoff_swap_coff_lineno_in),
(alpha_ecoff_swap_coff_aux_out, alpha_ecoff_swap_coff_sym_out),
(alpha_ecoff_swap_coff_lineno_out),
(alpha_ecoff_swap_coff_reloc_out): New functions.
* coff-mips.c (mips_ecoff_swap_coff_aux_in),
(mips_ecoff_swap_coff_sym_in, mips_ecoff_swap_coff_lineno_in),
(mips_ecoff_swap_coff_aux_out, mips_ecoff_swap_coff_sym_out),
(mips_ecoff_swap_coff_lineno_out),
(mips_ecoff_swap_coff_reloc_out): New functions.
* coffcode.h (coff_set_alignment_hook): Replace define with
new function.
(symname_in_debug_hook): Likewise.
* ecoff.c (_bfd_ecoff_set_alignment_hook): New function.
* elfxx-target.h (elf_backend_allow_non_load_phdr): Default to 0.
* elf.c (assign_file_positions_except_relocs): Test
elf_backend_allow_non_load_phdr for NULL.
* elflink.c (_bfd_elf_omit_section_dynsym_default): Rename from
_bfd_elf_link_omit_section_dynsym. Update uses.
(_bfd_elf_omit_section_dynsym_all): New function.
* elf-bfd.h (_bfd_elf_link_omit_section_dynsym): Delete.
(_bfd_elf_omit_section_dynsym_default): Declare.
(_bfd_elf_omit_section_dynsym_all): Declare.
* linker.c (_bfd_nolink_sizeof_headers, _bfd_nolink_bfd_relax_section),
(_bfd_nolink_bfd_get_relocated_section_contents),
(_bfd_nolink_bfd_lookup_section_flags),
(_bfd_nolink_bfd_is_group_section, _bfd_nolink_bfd_discard_group),
(_bfd_nolink_bfd_link_hash_table_create),
(_bfd_nolink_bfd_link_just_syms),
(_bfd_nolink_bfd_copy_link_hash_symbol_type),
(_bfd_nolink_bfd_link_split_section),
(_bfd_nolink_section_already_linked),
(_bfd_nolink_bfd_define_common_symbol),
(_bfd_nolink_bfd_define_start_stop): New functions.
* reloc.c (_bfd_norelocs_bfd_reloc_type_lookup),
(_bfd_norelocs_bfd_reloc_name_lookup),
(_bfd_nodynamic_canonicalize_dynamic_reloc): New functions.
* section.c (_bfd_nowrite_set_section_contents): New function.
* syms.c (_bfd_nosymbols_canonicalize_symtab),
(_bfd_nosymbols_print_symbol, _bfd_nosymbols_get_symbol_info),
(_bfd_nosymbols_get_symbol_version_string),
(_bfd_nosymbols_bfd_is_local_label_name),
(_bfd_nosymbols_get_lineno, _bfd_nosymbols_find_nearest_line),
(_bfd_nosymbols_find_line, _bfd_nosymbols_find_inliner_info),
(_bfd_nosymbols_bfd_make_debug_symbol),
( _bfd_nosymbols_read_minisymbols),
( _bfd_nosymbols_minisymbol_to_symbol),
(_bfd_nodynamic_get_synthetic_symtab): New functions.
* libbfd-in.h: Declare new functions. Update existing defines,
removing casts.
* aix386-core.c: Update to use new hooks. Formatting.
* aout-adobe.c: Likewise.
* aout-arm.c: Likewise.
* aout-target.h: Likewise.
* aout-tic30.c: Likewise.
* aoutf1.h: Likewise.
* binary.c: Likewise.
* bout.c: Likewise.
* cisco-core.c: Likewise.
* coff-alpha.c: Likewise.
* coff-i386.c: Likewise.
* coff-i860.c: Likewise.
* coff-i960.c: Likewise.
* coff-ia64.c: Likewise.
* coff-mips.c: Likewise.
* coff-ppc.c: Likewise.
* coff-rs6000.c: Likewise.
* coff-sh.c: Likewise.
* coff-tic30.c: Likewise.
* coff-tic54x.c: Likewise.
* coff-x86_64.c: Likewise.
* coff64-rs6000.c: Likewise.
* coffcode.h: Likewise.
* elf-m10300.c: Likewise.
* elf32-cr16.c: Likewise.
* elf32-lm32.c: Likewise.
* elf32-m32r.c: Likewise.
* elf32-metag.c: Likewise.
* elf32-score.c: Likewise.
* elf32-score7.c: Likewise.
* elf32-tilepro.c: Likewise.
* elf32-xstormy16.c: Likewise.
* elf32-xtensa.c: Likewise.
* elf64-alpha.c: Likewise.
* elf64-hppa.c: Likewise.
* elf64-ia64-vms.c: Likewise.
* elf64-mmix.c: Likewise.
* elf64-sh64.c: Likewise.
* elfnn-ia64.c: Likewise.
* elfxx-sparc.c: Likewise.
* elfxx-target.h: Likewise.
* elfxx-tilegx.c: Likewise.
* elfxx-x86.h: Likewise.
* hp300hpux.c: Likewise.
* hppabsd-core.c: Likewise.
* hpux-core.c: Likewise.
* i386msdos.c: Likewise.
* i386os9k.c: Likewise.
* ieee.c: Likewise.
* ihex.c: Likewise.
* irix-core.c: Likewise.
* libaout.h: Likewise.
* libecoff.h: Likewise.
* mach-o-target.c: Likewise.
* mach-o.c: Likewise.
* mipsbsd.c: Likewise.
* mmo.c: Likewise.
* netbsd-core.c: Likewise.
* nlm-target.h: Likewise.
* oasys.c: Likewise.
* osf-core.c: Likewise.
* pdp11.c: Likewise.
* pe-mips.c: Likewise.
* pe-x86_64.c: Likewise.
* pef.c: Likewise.
* plugin.c: Likewise.
* ppcboot.c: Likewise.
* ptrace-core.c: Likewise.
* sco5-core.c: Likewise.
* som.c: Likewise.
* sparclynx.c: Likewise.
* srec.c: Likewise.
* tekhex.c: Likewise.
* trad-core.c: Likewise.
* verilog.c: Likewise.
* versados.c: Likewise.
* vms-alpha.c: Likewise.
* vms-lib.c: Likewise.
* wasm-module.c: Likewise.
* xsym.c: Likewise.
* libbfd.h: Regenerate.
|
|
This fixes the case where all of a group is removed with ld -r, the
situation in the PR, and failures where part of a group is removed
that contain relocs.
bfd/
PR 22836
* elf.c (_bfd_elf_fixup_group_sections): Account for removed
relocation sections. If size reduces to just the flag word,
remove that too and mark with SEC_EXCLUDE.
* elflink.c (bfd_elf_final_link): Strip empty group sections.
binutils/
* testsuite/binutils-all/group-7.s,
* testsuite/binutils-all/group-7a.d,
* testsuite/binutils-all/group-7b.d,
* testsuite/binutils-all/group-7c.d: New tests.
* testsuite/binutils-all/objcopy.exp: Run them.
ld/
* testsuite/ld-elf/pr22836-2.d,
* testsuite/ld-elf/pr22836-2.s: New test.
|
|
bfdI would like to fix instances of the following warning, when building
with clang with no special CFLAGS other than -g3 -O0.
/home/emaisin/src/binutils-gdb/bfd/elflink.c:5425:45: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
return (struct elf_link_hash_entry *) 0 - 1;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
Replacing those with "(struct elf_link_hash_entry *) -1" gets rid of the
warning. I wanted to check that it didn't change the resulting code, so
I tried to build this:
$ cat test.c
int *before()
{
return (int *) 0 - 1;
}
int *after()
{
return (int *) - 1;
}
$ gcc -c test.c -g
$ objdump -d test.o
test.o: file format elf64-x86-64
Disassembly of section .text:
0000000000000000 <before>:
0: 55 push %rbp
1: 48 89 e5 mov %rsp,%rbp
4: 48 c7 c0 fc ff ff ff mov $0xfffffffffffffffc,%rax
b: 5d pop %rbp
c: c3 retq
000000000000000d <after>:
d: 55 push %rbp
e: 48 89 e5 mov %rsp,%rbp
11: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax
18: 5d pop %rbp
19: c3 retq
This shows that the previous code doesn't actually return -1 as the
function documentation says, but the new one does, so it's kind of a
bugfix.
bfd * elf64-ppc.c (ppc64_elf_archive_symbol_lookup): Avoid pointer
arithmetic on NULL pointer.
* elflink.c (_bfd_elf_archive_symbol_lookup,
elf_link_add_archive_symbols): Likewise.
ld * ldexp.c (fold_name, exp_fold_tree_1): Avoid pointer arithmetic
on NULL pointer.
|
|
We really need to check for a dynamic def, not only a ref.
See added testcase.
bfd/
* elflink.c (bfd_elf_define_start_stop): Fix check of
def_dynamic.
ld/
* testsuite/ld-elf/pr21964-5.c: New test.
* testsuite/ld-elf/shared.exp: Run it.
|
|
Define __start/__stop symbols if they are referenced by shared objects,
not if they are also defined in shared objects.
bfd/
PR ld/21964
* elflink.c (bfd_elf_define_start_stop): Check if __start and
__stop symbols are referenced by shared objects.
ld/
PR ld/21964
* testsuite/ld-elf/pr21964-4.c: New file.
* testsuite/ld-elf/shared.exp: Run pr21964-4 test on Linux.
|
|
bfd/
* elflink.c (bfd_elf_define_start_stop): Make __start and __stop
symbols dynamic.
ld/
* testsuite/ld-elf/pr21964-3a.c: New file.
* testsuite/ld-elf/pr21964-3c.c: New file.
* testsuite/ld-elf/shared.exp: Run new __start/__stop testcase.
|
|
This patch fixes a case where a user had a C-representable named
section in both the executable and shared libraries, and of course
wanted the size of the local section in the executable, not the
dynamic section. It does mean that __start and __stop symbols don't
behave exactly like PROVIDEd symbols, but I think that's a reasonable
difference particularly since this is the way they used to behave.
* elflink.c (bfd_elf_define_start_stop): Override symbols when
they are defined dynamically.
|
|
We should ignore dynamic references on forced local symbols during
garbage collection since they can never be referenced dynamically.
bfd/
PR ld/22649
* elflink.c (bfd_elf_gc_mark_dynamic_ref_symbol): Ignore dynamic
references on forced local symbols.
ld/
PR ld/22649
* testsuite/ld-elf/pr22649-1.s: New file.
* testsuite/ld-elf/pr22649-2a.s: Likewise.
* testsuite/ld-elf/pr22649-2b.s: Likewise.
* testsuite/ld-elf/pr22649.msg: Likewise.
* testsuite/ld-elf/shared.exp: Run ld/22649 tests.
|
|
We must keep all PREINIT_ARRAY, INIT_ARRAY as well as FINI_ARRAY sections
for ld -r --gc-sections.
bfd/
PR ld/22677
* elflink.c (bfd_elf_gc_sections): Keep all PREINIT_ARRAY,
INIT_ARRAY as well as FINI_ARRAY sections for ld -r --gc-sections.
ld/
PR ld/22677
* scripttempl/elf.sc (PREINIT_ARRAY): New.
Don't add .preinit_array for ld -r.
* testsuite/ld-elf/pr22677.d: New file.
* testsuite/ld-elf/pr22677.s: Likewise.
|
|
|
|
_bfd_elf_link_renumber_dynsyms is called twice by the linker. The
first call in bfd_elf_size_dynamic_sections is just to answer the
question as to whether there are there any dynamic symbols. The
second call in bfd_elf_size_dynsym_hash_dynstr sets the st_shndx value
that dynamic symbols will have. strip_excluded_output_sections is
called between these two calls. So sections seen on the first
_bfd_elf_link_renumber_dynsyms pass might differ from those seen on
the second pass. Unfortunately, that can result in a stripped
section's dynamic symbol being assigned a dynindx on the first pass
but not corrected to the final value (of zero, ie. not dynamic) on the
second pass. PowerPC, x86, mips, and most other targets that emit
dynamic section symbols, just test that section symbol dynindx is
non-zero before using a given section symbol in dynamic relocations.
This patch prevents _bfd_elf_link_renumber_dynsyms from setting any
section symbol dynindx on the first pass.
PR 22626
* elflink.c (_bfd_elf_link_renumber_dynsyms): Don't set section
dynindx when section_sym_count is NULL.
(bfd_elf_size_dynamic_sections): Pass NULL section_sym_count to
preliminary _bfd_elf_link_renumber_dynsyms call.
|
|
Binutils is supposed to use tabs. In my git config I have
whitespace = indent-with-non-tab,space-before-tab,trailing-space
and I got annoyed enough seeing red in "git diff" output to fix
the problems.
* doc/header.sed: Trim trailing space when splitting lines.
* aix386-core.c, * aout-adobe.c, * aout-arm.c, * aout-cris.c,
* aout-ns32k.c, * aout-target.h, * aout-tic30.c, * aoutf1.h, * aoutx.h,
* arc-got.h, * arc-plt.def, * arc-plt.h, * archive.c, * archive64.c,
* archures.c, * armnetbsd.c, * bfd-in.h, * bfd.c, * bfdio.c, * binary.c,
* bout.c, * cache.c, * cisco-core.c, * coff-alpha.c, * coff-apollo.c,
* coff-arm.c, * coff-h8300.c, * coff-i386.c, * coff-i860.c,
* coff-i960.c, * coff-m68k.c, * coff-m88k.c, * coff-mcore.c,
* coff-mips.c, * coff-ppc.c, * coff-rs6000.c, * coff-sh.c,
* coff-stgo32.c, * coff-tic4x.c, * coff-tic54x.c, * coff-tic80.c,
* coff-we32k.c, * coff-x86_64.c, * coff-z80.c, * coff-z8k.c,
* coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c,
* coffswap.h, * compress.c, * corefile.c, * cpu-alpha.c, * cpu-arm.c,
* cpu-avr.c, * cpu-bfin.c, * cpu-cr16.c, * cpu-cr16c.c, * cpu-crx.c,
* cpu-d10v.c, * cpu-frv.c, * cpu-ft32.c, * cpu-i370.c, * cpu-i960.c,
* cpu-ia64-opc.c, * cpu-ip2k.c, * cpu-lm32.c, * cpu-m32r.c,
* cpu-mcore.c, * cpu-microblaze.c, * cpu-mips.c, * cpu-moxie.c,
* cpu-mt.c, * cpu-nios2.c, * cpu-ns32k.c, * cpu-or1k.c, * cpu-powerpc.c,
* cpu-pru.c, * cpu-sh.c, * cpu-spu.c, * cpu-v850.c, * cpu-v850_rh850.c,
* cpu-xgate.c, * cpu-z80.c, * dwarf1.c, * dwarf2.c, * ecoff.c,
* ecofflink.c, * ecoffswap.h, * elf-bfd.h, * elf-eh-frame.c,
* elf-hppa.h, * elf-m10200.c, * elf-m10300.c, * elf-s390-common.c,
* elf-strtab.c, * elf-vxworks.c, * elf.c, * elf32-am33lin.c,
* elf32-arc.c, * elf32-arm.c, * elf32-avr.c, * elf32-avr.h,
* elf32-bfin.c, * elf32-cr16.c, * elf32-cr16c.c, * elf32-cris.c,
* elf32-crx.c, * elf32-d10v.c, * elf32-d30v.c, * elf32-dlx.c,
* elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c, * elf32-ft32.c,
* elf32-h8300.c, * elf32-hppa.c, * elf32-i386.c, * elf32-i860.c,
* elf32-i960.c, * elf32-ip2k.c, * elf32-lm32.c, * elf32-m32c.c,
* elf32-m32r.c, * elf32-m68hc11.c, * elf32-m68hc12.c, * elf32-m68hc1x.c,
* elf32-m68hc1x.h, * elf32-m68k.c, * elf32-m88k.c, * elf32-mcore.c,
* elf32-mep.c, * elf32-metag.c, * elf32-microblaze.c, * elf32-mips.c,
* elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c,
* elf32-nds32.h, * elf32-nios2.c, * elf32-or1k.c, * elf32-pj.c,
* elf32-ppc.c, * elf32-ppc.h, * elf32-pru.c, * elf32-rl78.c,
* elf32-rx.c, * elf32-s390.c, * elf32-score.c, * elf32-score.h,
* elf32-score7.c, * elf32-sh-symbian.c, * elf32-sh.c, * elf32-sh64.c,
* elf32-sparc.c, * elf32-spu.c, * elf32-tic6x.c, * elf32-tilegx.c,
* elf32-tilegx.h, * elf32-tilepro.c, * elf32-tilepro.h, * elf32-v850.c,
* elf32-vax.c, * elf32-wasm32.c, * elf32-xc16x.c, * elf32-xgate.c,
* elf32-xgate.h, * elf32-xstormy16.c, * elf32-xtensa.c, * elf64-alpha.c,
* elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mips.c, * elf64-mmix.c,
* elf64-ppc.c, * elf64-s390.c, * elf64-sh64.c, * elf64-sparc.c,
* elf64-tilegx.c, * elf64-tilegx.h, * elf64-x86-64.c, * elfcore.h,
* elflink.c, * elfn32-mips.c, * elfnn-aarch64.c, * elfnn-ia64.c,
* elfnn-riscv.c, * elfxx-aarch64.c, * elfxx-aarch64.h, * elfxx-ia64.c,
* elfxx-ia64.h, * elfxx-mips.c, * elfxx-riscv.c, * elfxx-sparc.c,
* elfxx-tilegx.c, * elfxx-x86.c, * elfxx-x86.h, * freebsd.h, * hash.c,
* host-aout.c, * hp300hpux.c, * hppabsd-core.c, * hpux-core.c,
* i386aout.c, * i386linux.c, * i386lynx.c, * i386mach3.c, * i386msdos.c,
* i386netbsd.c, * ieee.c, * ihex.c, * irix-core.c, * libaout.h,
* libbfd-in.h, * libbfd.c, * libcoff-in.h, * libnlm.h, * libpei.h,
* libxcoff.h, * linker.c, * lynx-core.c, * m68k4knetbsd.c,
* m68klinux.c, * m68knetbsd.c, * m88kmach3.c, * mach-o-aarch64.c,
* mach-o-arm.c, * mach-o-i386.c, * mach-o-target.c, * mach-o-x86-64.c,
* mach-o.c, * mach-o.h, * merge.c, * mipsbsd.c, * mmo.c, * netbsd.h,
* netbsd-core.c, * newsos3.c, * nlm-target.h, * nlm32-ppc.c,
* nlm32-sparc.c, * nlmcode.h, * ns32k.h, * ns32knetbsd.c, * oasys.c,
* opncls.c, * pc532-mach.c, * pdp11.c, * pe-arm.c, * pe-i386.c,
* pe-mcore.c, * pe-mips.c, * pe-x86_64.c, * peXXigen.c, * pef.c,
* pef.h, * pei-arm.c, * pei-i386.c, * pei-mcore.c, * pei-x86_64.c,
* peicode.h, * plugin.c, * ppcboot.c, * ptrace-core.c, * reloc.c,
* riscix.c, * rs6000-core.c, * section.c, * som.c, * som.h,
* sparclinux.c, * sparcnetbsd.c, * srec.c, * stabs.c, * sunos.c,
* syms.c, * targets.c, * tekhex.c, * trad-core.c, * vax1knetbsd.c,
* vaxnetbsd.c, * verilog.c, * versados.c, * vms-alpha.c, * vms-lib.c,
* vms-misc.c, * wasm-module.c, * wasm-module.h, * xcofflink.c,
* xsym.c, * xsym.h: Whitespace fixes.
* bfd-in2.h, * libbfd.h, * libcoff.h: Regenerate.
|
|
This patch processes linker script assignment statements before ld
opens DT_NEEDED libraries, in order to define symbols like __bss_start
that might also be defined by a library, falsely triggering an error
about "DSO missing from command line".
The initial value won't be correct when assigning a symbol from dot,
and I make no attempt to handle all expressions. For example, an
assignment like "_start_foo = ADDR (.foo)" isn't valid until sections
are laid out, so won't define _start_foo early. What's here should be
enough for most common scripts, and hopefully won't perturb fragile
scripts.
bfd/
PR 22471
* elflink.c (_bfd_elf_merge_symbol): Allow weak symbols to override
early passes over linker script symbols.
* linker.c (_bfd_generic_link_add_one_symbol): Allow symbols to
override early passes over linker script symbols. Clear ldscript_def
on symbol definitions.
ld/
PR 22471
* ldexp.c (struct definedness_hash_entry): Delete "by_script". Make
"iteration" an 8-bit field, and update mask in all uses.
(definedness_newfunc): Don't init "by_script".
(update_definedness): Test ldscript_def rather than by_script.
(is_sym_value): Likewise.
(fold_name <DEFINED>): Return a result for first phase. Test
ldscript_def.
(fold_name <NAME>): Return a result for first phase.
* ldlang.c (open_input_bfds): Process all assignments, not just
defsym.
(lang_process): Increment lang_statement_iteration before
open_input_bfds.
* testsuite/ld-mips-elf/tlsdyn-o32-1.d: Adjust for larger .dynsym.
* testsuite/ld-mips-elf/tlsdyn-o32-1.got: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-2.d: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-2.got: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-3.d: Likewise.
* testsuite/ld-mips-elf/tlsdyn-o32-3.got: Likewise.
|
|
If linker plugin is enabled, set non_ir_ref_regular on symbols referenced
in regular objects so that linker plugin will get the correct symbol
resolution.
bfd/
PR ld/22502
* elflink.c (_bfd_elf_merge_symbol): Also skip definition from
an IR object.
(elf_link_add_object_symbols): If linker plugin is enabled, set
non_ir_ref_regular on symbols referenced in regular objects so
that linker plugin will get the correct symbol resolution.
ld/
PR ld/22502
* testsuite/ld-plugin/lto.exp: Run PR ld/22502 test.
* testsuite/ld-plugin/pr22502a.c: New file.
* testsuite/ld-plugin/pr22502b.c: Likewise.
|
|
This makes the elf_link_hash_entry weakdef field, currently used to
point from a weak symbol to a strong alias, a circular list so that
all aliases can be found from any of them. A new flag, is_weakalias,
distinguishes the weak symbol from a strong alias, and is used in all
places where we currently test u.weakdef != NULL.
With the original u.weakdef handling it was possible to have two or
more weak symbols pointing via u.weakdef to a strong definition.
Obviously that situation can't map to a circular list; One or more of
the weak symbols must point at another weak alias rather than the
strong definition. To handle that, I've added an accessor function to
return the strong definition.
* elf-bfd.h (struct elf_link_hash_entry): Add is_weakalias.
Rename u.weakdef to u.alias and update comment.
(weakdef): New static inline function.
* elflink.c (bfd_elf_record_link_assignment) Test is_weakalias
rather than u.weakdef != NULL, and use weakdef function.
(_bfd_elf_adjust_dynamic_symbol): Likewise.
(_bfd_elf_fix_symbol_flags): Likewise. Clear is_weakalias on
all aliases if def has been overridden in a regular object, not
u.weakdef.
(elf_link_add_object_symbols): Delete new_weakdef flag. Test
is_weakalias and use weakdef. Set is_weakalias and circular
u.alias. Update comments.
(_bfd_elf_gc_mark_rsec): Test is_weakalias rather than
u.weakdef != NULL and use weakdef function.
* elf-m10300.c (_bfd_mn10300_elf_adjust_dynamic_symbol): Test
is_weakalias rather than u.weakdef != NULL and use weakdef
function. Assert that def is strong defined.
* elf32-arc.c (elf_arc_adjust_dynamic_symbol): Likewise.
* elf32-arm.c (elf32_arm_adjust_dynamic_symbol): Likewise.
* elf32-bfin.c (elf32_bfinfdpic_adjust_dynamic_symbol): Likewise.
(bfin_adjust_dynamic_symbol): Likewise.
* elf32-cr16.c (_bfd_cr16_elf_adjust_dynamic_symbol): Likewise.
* elf32-cris.c (elf_cris_adjust_dynamic_symbol): Likewise.
* elf32-frv.c (elf32_frvfdpic_adjust_dynamic_symbol): Likewise.
* elf32-hppa.c (elf32_hppa_adjust_dynamic_symbol): Likewise.
* elf32-i370.c (i370_elf_adjust_dynamic_symbol): Likewise.
* elf32-lm32.c (lm32_elf_adjust_dynamic_symbol): Likewise.
* elf32-m32r.c (m32r_elf_adjust_dynamic_symbol): Likewise.
* elf32-m68k.c (elf_m68k_adjust_dynamic_symbol): Likewise.
* elf32-metag.c (elf_metag_adjust_dynamic_symbol): Likewise.
* elf32-microblaze.c (microblaze_elf_adjust_dynamic_symbol): Likewise.
* elf32-nds32.c (nds32_elf_adjust_dynamic_symbol): Likewise.
* elf32-nios2.c (nios2_elf32_adjust_dynamic_symbol): Likewise.
* elf32-or1k.c (or1k_elf_adjust_dynamic_symbol): Likewise.
* elf32-ppc.c (ppc_elf_adjust_dynamic_symbol): Likewise.
* elf32-s390.c (elf_s390_adjust_dynamic_symbol): Likewise.
* elf32-score.c (s3_bfd_score_elf_adjust_dynamic_symbol): Likewise.
* elf32-score7.c (s7_bfd_score_elf_adjust_dynamic_symbol): Likewise.
* elf32-sh.c (sh_elf_adjust_dynamic_symbol): Likewise.
* elf32-tic6x.c (elf32_tic6x_adjust_dynamic_symbol): Likewise.
* elf32-tilepro.c (tilepro_elf_gc_mark_hook): Likewise.
(tilepro_elf_adjust_dynamic_symbol): Likewise.
* elf32-vax.c (elf_vax_adjust_dynamic_symbol): Likewise.
* elf32-xtensa.c (elf_xtensa_adjust_dynamic_symbol): Likewise.
* elf64-alpha.c (elf64_alpha_adjust_dynamic_symbol): Likewise.
* elf64-hppa.c (elf64_hppa_adjust_dynamic_symbol): Likewise.
* elf64-ia64-vms.c (elf64_ia64_adjust_dynamic_symbol): Likewise.
* elf64-ppc.c (ppc64_elf_gc_mark_hook): Likewise.
(ppc64_elf_adjust_dynamic_symbol): Likewise.
* elf64-s390.c (elf_s390_adjust_dynamic_symbol): Likewise.
* elf64-sh64.c (sh64_elf64_adjust_dynamic_symbol): Likewise.
* elfnn-aarch64.c (elfNN_aarch64_adjust_dynamic_symbol): Likewise.
* elfnn-ia64.c (elfNN_ia64_adjust_dynamic_symbol): Likewise.
* elfnn-riscv.c (riscv_elf_adjust_dynamic_symbol): Likewise.
* elfxx-mips.c (_bfd_mips_elf_adjust_dynamic_symbol): Likewise.
* elfxx-sparc.c (_bfd_sparc_elf_gc_mark_hook): Likewise.
(_bfd_sparc_elf_adjust_dynamic_symbol): Likewise.
* elfxx-tilegx.c (tilegx_elf_gc_mark_hook): Likewise.
(tilegx_elf_adjust_dynamic_symbol): Likewise.
* elfxx-x86.c (_bfd_x86_elf_adjust_dynamic_symbol): Likewise.
|
|
The existing code allowed common and indirect symbols to pass an
assert, but then read root.u.def which is not valid for anything
besides defined and weakdef symbols. The garbage root.u.def.section
pointer read can't possibly match pointers stored at the same location
for indirect and common symbols, so we would always have left
u.weakdef NULL.
* elflink.c (elf_link_add_object_symbols): Ignore anything but
defined and defweak symbols when setting up weakdefs.
|
|
I noticed when looking at pr22300 that before calling check_relocs we
have an elf_object_id test (added for pr11933) as well as the
relocs_compatible test. I believe backend gc_mark_hook and
gc_sweep_hook ought to be protected similarly from being confused by
unexpected relocations (for example, both elf64-ppc.c and elf32-ppc.c
use _bfd_elf_relocs_compatible, so I think it would be possible for
the ppc64 gc_mark_hook to be presented with a ppc32 relocatable
object).
* elflink.c (elf_gc_sweep): Test elf_object_id in addition to
relocs_compatible.
(bfd_elf_gc_sections): Likewise.
|
|
polyml produces object files with the wrong OS/ABI for hppa-linux.
This, along with the fact that elf32-hppa.c is using the strictest
backend relocs_compatible, results in wrong merging of ELF symbols.
So, remove the relocs_compatible check in _bfd_elf_merge_symbol.
_bfd_elf_merge_symbol is only called nowadays from within blocks
protected by is_elf_hash_table, so "we are doing an ELF link" as the
removed comment says, is true.
Also relax relocs_compatible for hppa and powerpc. relocs_compatible
is used for more than just merging symbols, as the name suggests.
This allows objects that are in fact reasonably compatible to be
linked.
PR 22300
* elflink.c (_bfd_elf_merge_symbol): Remove relocs_compatible check.
* elf32-hppa.c (elf_backend_relocs_compatible): Define.
* elf32-ppc.c (elf_backend_relocs_compatible): Define.
* elf64-ppc.c (elf_backend_relocs_compatible): Define.
|
|
when --allow-multiple-definition is provided.
The behavior of _bfd_elf_merge_symbol and _bfd_generic_link_add_one_symbol is
inconsistent.
In multiple definition case, _bfd_elf_merge_symbol decided to override the old
symbol definition with the new defintion, (size, type, target data)
In _bfd_generic_link_add_one_symbol, it simply return without doing anything
because of allow-multiple-definition is provided.
This leaves the symbol in a wrong state.
Here, following the documentation, I made this patch to force the old definition
override the new definition if the old symbol is not dynamic or weak.
Because, in those two cases, it's expected to do some merge. I have checked
that, those two cases are properly handled.
bfd/
PR ld/21703
* elflink.c (_bfd_elf_merge_symbol): Handle multiple definition case.
ld/
PR ld/21703
* testsuite/ld-elf/elf.exp: Run new tests.
* testsuite/ld-elf/pr21703-1.s: New.
* testsuite/ld-elf/pr21703-2.s: New.
* testsuite/ld-elf/pr21703-3.s: New.
* testsuite/ld-elf/pr21703-4.s: New.
* testsuite/ld-elf/pr21703-r.sd: New.
* testsuite/ld-elf/pr21703-shared.sd: New.
* testsuite/ld-elf/pr21703.sd: New.
* testsuite/ld-elf/pr21703.ver: New.
|
|
option appear in the output executable, if they have not been resolved.
PR 22319
bfd * elflink.c (elf_link_output_extsym): Keep global undefined
symbols if they have been marked as needed.
ld * testsuite/ld-elf/pr22310.s: New test source file.
* testsuite/ld-elf/pr22310.d: New test driver.
* testsuite/ld-mmix/undef-3.d: Update expected output from readelf.
|
|
For all ELF targers, call check_relocs after opening all inputs and
garbage collection. Since the symbol resolution is known, check_relocs
can be simplified. Also garbage collection doesn't need to undo what
check_relocs has done for symbols which have been garbage collected.
Since ELF targets never see the removed sections, gc_sweep_hook can be
removed from elf_backend_data and we can avoid GOT/PLT with garbage
collection now.
Set link_info.check_relocs_after_open_input to TRUE for all linker
targets which use ELF linker and update garbage collection tests to
remove unused GOT section.
ldemul_after_check_relocs is added for powerpc to support --secure-plt,
--bss-plt and --sdata-got.
Tested natively without regressions on i686, x86-64 and x32. Tested
cross binutils on x86-64 without regressions for aarch64-linux,
alpha-linux, arm-linux, bfin-elf, cr16-elf, cris-elf, crx-elf, frv-linux,
hppa64-linux, hppa-linux, ia64-linux, lm32-elf, m32r-elf, m68k-linux,
mcore-elf, metag-elf, microblaze-linux, mips-linux, mmix, mn10300-elf,
nds32le-linux, nios2-linux, or1k-elf, powerpc64-linux, powerpc-linux,
riscv32-linux, riscv64-linux, s390-linux, s390x-linux, score-elf,
sh3-linux, sparc64-linux, sparc-linux, tic6x-elf, tilegx-linux,
tilepro-linux, vax-linux, x86_64-mingw32 and xtensa-linux.
bfd/
* elf-bfd.h (elf_backend_data): Remove gc_sweep_hook.
* elf32-arm.c (elf32_arm_gc_sweep_hook): Removed.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-bfin.c (bfin_gc_sweep_hook): Likewise.
(bfinfdpic_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-cr16.c (elf32_cr16_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-cris.c (cris_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-hppa.c (elf32_hppa_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-lm32.c (lm32_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-m32r.c (m32r_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-m68k.c (elf_m68k_got_entry): Remove elf_m68k_gc_sweep_hook
from comments.
(elf_m68k_remove_got_entry_type): Removed.
(elf_m68k_find_got_entry_ptr): Likewise.
(elf_m68k_remove_got_entry): Likewise.
(elf_m68k_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-mcore.c (mcore_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-metag.c (elf_metag_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-microblaze.c (elf_backend_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-mips.c (elf_backend_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-nds32.c (nds32_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-nios2.c (nios2_elf32_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-or1k.c (or1k_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-ppc.c (ppc_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-s390.c (elf_s390_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-sparc.c (elf_backend_gc_sweep_hook): Likewise.
* elf32-tic6x.c (elf32_tic6x_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-tilegx.c (elf_backend_gc_sweep_hook): Likewise.
* elf32-tilepro.c (tilepro_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-vax.c (elf_vax_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-xtensa.c (elf_xtensa_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf64-alpha.c (elf64_alpha_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf64-mips.c (elf_backend_gc_sweep_hook): Likewise.
* elf64-mmix.c (mmix_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf64-ppc.c (elf_backend_gc_sweep_hook): Likewise.
(ppc64_elf_gc_sweep_hook): Likewise.
* elf64-s390.c (elf_s390_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf64-sparc.c (elf_backend_gc_sweep_hook): Likewise.
* elf64-tilegx.c (elf_backend_gc_sweep_hook): Likewise.
* elflink.c (elf_link_add_object_symbols): Don't call
_bfd_elf_link_check_relocs here.
(gc_sweep_hook_fn): Removed.
(elf_gc_sweep): Remove gc_sweep_hook.
* elfnn-aarch64.c (elfNN_aarch64_gc_sweep_hook): Removed.
(elf_backend_gc_sweep_hook): Likewise.
* elfnn-riscv.c (riscv_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elfxx-mips.c (_bfd_mips_elf_gc_sweep_hook): Likewise.
* elfxx-mips.h (_bfd_mips_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elfxx-sparc.c (_bfd_sparc_elf_gc_sweep_hook): Likewise.
* elfxx-sparc.h (_bfd_sparc_elf_gc_sweep_hook): Likewise.
* elfxx-target.h (elf_backend_gc_sweep_hook): Likewise.
(elfNN_bed): Remove elf_backend_gc_sweep_hook.
* elfxx-tilegx.c (tilegx_elf_gc_sweep_hook): Removed.
* elfxx-tilegx.h (tilegx_elf_gc_sweep_hook): Likewise.
ld/
* emulparams/elf32_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Removed.
* emulparams/elf_i386_be.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_i386_chaos.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_i386_ldso.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_i386_vxworks.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_iamcu.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_k1om.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_l1om.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/i386lynx.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/i386moss.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/i386nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/i386nw.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shelf.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shelf32.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shelf_nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shelf_vxworks.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shlelf32_linux.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shlelf_linux.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shlelf_nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emultempl/aarch64elf.em (gld${EMULATION_NAME}_before_parse):
Set link_info.check_relocs_after_open_input to TRUE.
* emultempl/armelf.em (gld${EMULATION_NAME}_before_parse):
Likewise.
* emultempl/scoreelf.em (gld${EMULATION_NAME}_before_parse):
Likewise.
* emultempl/aix.em (ld_${EMULATION_NAME}_emulation): Add
after_parse_default.
* emultempl/armcoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/beos.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/generic.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/gld960.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/gld960c.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/lnk960.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/m68kcoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/msp430.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/pe.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/pep.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/sunos.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/ticoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/vanilla.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Always
set link_info.check_relocs_after_open_input to TRUE.
(ld_${EMULATION_NAME}_emulation): Add $LDEMUL_AFTER_CHECK_RELOCS.
* emultempl/linux.em (gld${EMULATION_NAME}_before_parse):
Set link_info.check_relocs_after_open_input to TRUE.
(ld_${EMULATION_NAME}_emulation): Add after_check_relocs_default.
* emultempl/mmix-elfnmmo.em (mmix_before_parse): New function.
(LDEMUL_BEFORE_PARSE): New.
* emultempl/mmixelf.em (elfmmix_before_parse): Replace
gld${EMULATION_NAME}_before_parse with mmix_before_parse.
* emultempl/ppc32elf.em (ppc_after_open): Renamed to ...
(ppc_after_check_relocs): This. Call after_check_relocs_default
instead of gld${EMULATION_NAME}_after_open.
(LDEMUL_AFTER_OPEN): Removed.
(LDEMUL_AFTER_CHECK_RELOCS): New.
* ldemul.c (ldemul_after_check_relocs): New.
(after_check_relocs_default): Likewise.
* ldemul.h (ldemul_after_check_relocs): Likewise.
(after_check_relocs_default): Likewise.
(ld_emulation_xfer_struct): Add after_check_relocs.
* ldlang.c (lang_process): Call ldemul_after_check_relocs after
lang_check_relocs.
* testsuite/ld-aarch64/gc-got-relocs.d: Don't expect GOT section.
* testsuite/ld-aarch64/gc-tls-relocs.d: Likewise.
* testsuite/ld-cris/tls-gc-68.d: Likewise.
* testsuite/ld-cris/tls-gc-69.d: Likewise.
* testsuite/ld-cris/tls-gc-70.d: Likewise.
* testsuite/ld-cris/tls-gc-75.d: Likewise.
* testsuite/ld-cris/tls-gc-79.d: Likewise.
* testsuite/ld-mmix/bpo-10.d: Don't expect .MMIX.reg_contents
section.
|
|
This function shouldn't be called directly, except from backend code.
bfd/
* elflink.c (_bfd_elf_adjust_dynamic_symbol): Call
elf_backend_hide_symbol, not _bfd_elf_link_hash_hide_symbol.
(bfd_elf_define_start_stop): Likewise.
ld/
* emultempl/elf32.em (before_allocation): Call
elf_backend_hide_symbol, not _bfd_elf_link_hash_hide_symbol.
Formatting.
|
|
* elflink.c (elf_link_input_bfd): Correct ctor/dtor in init_array/
fini_array error value.
|
|
non_ir_ref_dynamic wasn't being set in the case where we have a
versioned dynamic symbol definition with a non-versioned matching IR
symbol.
bfd/
PR 22220
* elflink.c (_bfd_elf_merge_symbol): Set non_ir_ref_dynamic in
a case where plugin_notice isn't called.
ld/
* testsuite/ld-plugin/pr22220.h,
* testsuite/ld-plugin/pr22220lib.cc,
* testsuite/ld-plugin/pr22220lib.ver,
* testsuite/ld-plugin/pr22220main.cc: New test.
* testsuite/ld-plugin/lto.exp: Run it.
|
|
elf_gc_sweep_symbol should run after verdefs are calculated, since
the verdef code creates symbols for the versions. However,
elf_gc_sweep_symbol needs to run before verrefs so as to not emit
useless verrefs for symbols that are gc'd.
I've also removed a _bfd_elf_link_renumber_dynsyms calls added by
Maciej after I fussed about it when reviewing. On further examination
the call appears to be unnecessary. Looking at renumber_dynsyms also
made me realize that the test to exclude .gnu.version has been wrong
since 2016-04-26 (git commit d5486c4372), so fix that too.
PR 22150
* elflink.c (bfd_elf_size_dynamic_sections): Garbage collect
symbols before calculating verrefs. Don't renumber dynsyms
after gc. Exclude .gnu.version when zero or one dynsym.
Localize some vars and reindent.
|
|
Found when building with gcc 4.9.4 using -Og.
bfd/
* elf-eh-frame.c (offset_adjust): Avoid false positive gcc warning.
* elflink.c (bfd_elf_size_dynsym_hash_dynstr): Likewise.
* elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Likewise.
ld/
* emultempl/msp430.em (eval_upper_either_sections): Make base_sec_name
a const char*.
(eval_lower_either_sections): Likewise.
(msp430_elf_after_allocation): Likewise, and don't needlessly concat
and free. Warning fix.
|
|
The machinery to do this was there, but not enabled if the terminator
was the only thing in the section.
bfd/
* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Don't exit early
for a section containing just a terminator. Allow multiple
terminators at end of section.
* elflink.c (bfd_elf_discard_info): Iterate over .eh_frame
sections when not adding alignment. Assert on terminator in
the middle of FDEs.
ld/
* testsuite/ld-elf/eh3.d: Update.
* testsuite/ld-elf/eh4.d: Update.
|
|
PR 21441
PR 22048
* elflink.c (bfd_elf_discard_info): Don't pad embedded zero
terminators.
|
|
They can't be hidden visibility since apparently people use dlsym to
look them up.
bfd/
PR ld/21964
* elf-bfd.h (SYMBOLIC_BIND): Return TRUE for __start/__stop symbols.
* elflink.c (bfd_elf_define_start_stop): Rewrite.
ld/
PR ld/21964
* testsuite/ld-elf/pr21562a.d: Update for changed start/stop symbols.
* testsuite/ld-elf/pr21562b.d: Likewise.
* testsuite/ld-elf/pr21562c.d: Likewise.
* testsuite/ld-elf/pr21562d.d: Likewise.
* testsuite/ld-elf/pr21562e.d: Likewise.
* testsuite/ld-elf/pr21562f.d: Likewise.
* testsuite/ld-elf/pr21562g.d: Likewise.
* testsuite/ld-elf/pr21562h.d: Likewise.
* testsuite/ld-elf/pr21562i.d: Likewise.
* testsuite/ld-elf/pr21562j.d: Likewise.
* testsuite/ld-elf/pr21562k.d: Likewise.
* testsuite/ld-elf/pr21562l.d: Likewise.
* testsuite/ld-elf/pr21562m.d: Likewise.
* testsuite/ld-elf/pr21562n.d: Likewise.
* testsuite/ld-elf/sizeofa.d: Likewise.
* testsuite/ld-elf/sizeofb.d: Likewise.
* testsuite/ld-elf/startofa.d: Likewise.
* testsuite/ld-elf/startofb.d: Likewise.
* testsuite/ld-gc/pr20022.d: Likewise.
* testsuite/ld-gc/start.d: Likewise.
* testsuite/ld-elf/pr21964-1a.c: New file.
* testsuite/ld-elf/pr21964-1b.c: New file.
* testsuite/ld-elf/pr21964-2a.c: New file.
* testsuite/ld-elf/pr21964-2b.c: New file.
* testsuite/ld-elf/shared.exp: Run PR ld/21964 tests.
|
|
Until all .eh_frame sections have been edited we don't know their
sizes. So it isn't possible to properly decide whether a non-empty
.eh_frame section follows a given section until editing is complete.
bfd/
PR 21441
* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Don't add
alignment padding here.
* elflink.c (bfd_elf_discard_info): Add .eh_frame padding here
in a reverse pass over sections.
ld/
PR 21441
* testsuite/ld-x86-64/pr21038a.d: Adjust.
* testsuite/ld-x86-64/pr21038a-now.d: Adjust.
|
|
bfd/
* elflink.c (elf_link_add_object_symbols): Move common symbol
check after bed->common_definition.
ld/
* testsuite/ld-elf/pr21903.s (start): Removed.
(_start): Likewise.
(__start): Likewise.
(main): Likewise.
(bar): New.
|
|
PR 21910
* elflink.c (bfd_elf_final_link): Don't segfault when sections
needed to define various dynamic tags have been discarded.
|
|
When --no-define-common is used to build shared library, treat common
symbol as undefined so that common symbols that are referenced from a
shared library to be assigned addresses only in the main program. This
eliminates the unused duplicate space in the shared library, and also
prevents any possible confusion over resolving to the wrong duplicate
when there are many dynamic modules with specialized search paths for
runtime symbol resolution.
--no-define-common is only allowed when building a shared library.
bfd/
PR ld/21903:
* elflink.c (elf_link_add_object_symbols): Treat common symbol
as undefined for --no-define-common.
include/
PR ld/21903:
* bfdlink.h (bfd_link_info): Add inhibit_common_definition.
ld/
PR ld/21903:
* ld.h (command_line): Remove inhibit_common_definition.
* ldgram.y: Replace command_line.inhibit_common_definition with
link_info.inhibit_common_definition.
* ldlang.c (lang_common): Likewise.
* lexsup.c (parse_args): Likewise.
* ldmain.c (main): Only allow --no-define-common with -shared.
* testsuite/ld-elf/pr21903.s: New file.
* testsuite/ld-elf/pr21903a.d: Likewise.
* testsuite/ld-elf/pr21903b.d: Likewise.
* testsuite/ld-elf/pr21903c.d: Likewise.
* testsuite/ld-elf/pr21903d.d: Likewise.
* testsuite/ld-elf/pr21903e.d: Likewise.
|
|
|
|
This patch uses the new %L _bfd_error_handler support for printing
bfd_vma arguments, and fixes a many other format and/or argument
errors in error messages.
bfd/
* binary.c (binary_set_section_contents): Don't print filepos in
error message.
(coff_write_object_contents): Cast size_t for error message.
(coff_slurp_line_table): Don't use bfd_vma symndx.
(coff_slurp_reloc_table): Remove unneeded cast.
* dwarf2.c (read_section): Cast bfd_int64_t to long long for
error message.
(find_abstract_instance_name): Likewise.
* elf32-arm.c (arm_type_of_stub): Correct error arg order.
(bfd_elf32_arm_stm32l4xx_erratum_scan): Don't cast error arg.
(elf32_arm_check_relocs): Make r_symndx an int.
* elf32-cris.c (cris_elf_check_relocs): Delete extraneous %s in
format string.
* elf32-metag.c (elf_metag_relocate_section): Delete extra error
message arg.
* elf32-nds32.c (nds32_elf_ex9_build_hash_table): Rewrite bogus
error message.
* elf32-i386.c (elf_i386_check_relocs): Make r_symndx an int.
* elf32-s390.c (elf_s390_check_relocs): Likewise.
* elf32-tic6x.c (elf32_tic6x_check_relocs): Likewise.
* elf32-tilepro.c (tilepro_elf_check_relocs): Likewise.
* elf32-xtensa.c (elf_xtensa_check_relocs): Likewise.
* elf64-s390.c (elf_s390_check_relocs): Likewise.
* elf64-x86-64.c (elf_x86_64_check_relocs): Likewise.
* elfnn-aarch64.c (elfNN_aarch64_check_relocs): Likewise.
* elfnn-riscv.c (riscv_elf_check_relocs): Likewise.
* elfxx-sparc.c (_bfd_sparc_elf_check_relocs): Likewise.
* elfxx-tilegx.c (tilegx_elf_check_relocs): Likewise.
* elf64-mmix.c (_bfd_mmix_after_linker_allocation): Cast size_t args
and use %lu for error message.
* elflink.c (elf_link_adjust_relocs): Delete extra error message arg.
* mmo.c (mmo_scan): Make stab_loc a file_ptr. Cast expression for
error message.
* elf32-arm.c (elf32_arm_tls_relax): Correct format string and args
in error message.
(elf32_arm_final_link_relocate): Likewise.
* coff-arm.c (bfd_arm_process_before_allocation): Likewise.
* coffcode.h (styp_to_sec_flags): Likewise.
* cofflink.c (_bfd_coff_write_global_sym): Likewise.
* ecoff.c (_bfd_ecoff_slurp_symbol_table): Likewise.
* elf32-arc.c (arc_elf_merge_private_bfd_data): Likewise.
* elf32-bfin.c (bfinfdpic_check_relocs): Likewise.
(elf32_bfin_merge_private_bfd_data): Likewise.
* elf32-cris.c (cris_elf_relocate_section): Likewise.
* elf32-frv.c (frv_elf_merge_private_bfd_data): Likewise.
* elf32-i370.c (i370_elf_merge_private_bfd_data): Likewise.
(i370_elf_relocate_section): Likewise.
* elf32-iq2000.c (iq2000_elf_merge_private_bfd_data): Likewise.
* elf32-m32c.c (m32c_elf_merge_private_bfd_data): Likewise.
* elf32-m68hc1x.c (_bfd_m68hc11_elf_merge_private_bfd_data): Likewise.
* elf32-mcore.c (mcore_elf_relocate_section): Likewise.
* elf32-mep.c (mep_elf_merge_private_bfd_data): Likewise.
* elf32-mt.c (mt_elf_merge_private_bfd_data): Likewise.
* elf64-sparc.c (elf64_sparc_merge_private_bfd_data): Likewise.
* elfxx-mips.c (mips_elf_merge_obj_e_flags): Likewise.
(_bfd_mips_elf_merge_private_bfd_data): Likewise.
* ieee.c (ieee_write_id, read_id): Likewise.
* mach-o.c (bfd_mach_o_write_contents): Likewise.
(bfd_mach_o_layout_commands, bfd_mach_o_read_section_32): Likewise.
(bfd_mach_o_read_section_64, bfd_mach_o_read_symtab_symbol): Likewise.
(bfd_mach_o_read_command, bfd_mach_o_header_p): Likewise.
* peXXigen.c (_bfd_XXi_swap_aouthdr_in): Likewise.
* stabs.c (_bfd_link_section_stabs): Likewise.
* coff-arm.c (coff_arm_relocate_section): Use L modifier in error
format.
* coff-mcore.c (coff_mcore_relocate_section): Likewise.
* coff-ppc.c (coff_ppc_relocate_section): Likewise.
* coff-rs6000.c (xcoff_reloc_type_toc): Likewise.
* coff-sh.c (sh_relax_section): Likewise.
(sh_relax_delete_bytes, sh_swap_insns): Likewise.
* coff-tic80.c (coff_tic80_relocate_section): Likewise.
* coffcode.h (coff_slurp_reloc_table): Likewise.
* coffgen.c (_bfd_coff_get_external_symbols): Likewise.
(_bfd_coff_read_string_table): Likewise.
* cofflink.c (_bfd_coff_generic_relocate_section): Likewise.
* compress.c (bfd_get_full_section_contents): Likewise.
* dwarf2.c (read_formatted_entries, decode_line_info): Likewise.
* elf-m10300.c (mn10300_elf_relocate_section): Likewise.
* elf.c (bfd_elf_string_from_elf_section): Likewise.
* elf32-arc.c (arc_special_overflow_checks): Likewise.
* elf32-arm.c (elf32_arm_tls_relax): Likewise.
(elf32_arm_final_link_relocate, elf32_arm_relocate_section): Likewise.
(elf32_arm_write_section): Likewise.
* elf32-bfin.c (bfin_relocate_section): Likewise.
(bfinfdpic_relocate_section): Likewise.
* elf32-hppa.c (hppa_build_one_stub): Likewise.
(final_link_relocate, elf32_hppa_relocate_section): Likewise.
* elf32-i386.c (elf_i386_tls_transition): Likewise.
(elf_i386_relocate_section): Likewise.
* elf32-ip2k.c (ip2k_final_link_relocate): Likewise.
* elf32-lm32.c (lm32_elf_finish_dynamic_sections): Likewise.
* elf32-m32r.c (m32r_elf_relocate_section): Likewise.
* elf32-m68k.c (elf_m68k_relocate_section): Likewise.
* elf32-metag.c (elf_metag_relocate_section): Likewise.
* elf32-nds32.c (unrecognized_reloc_msg): Likewise.
(nds32_elf_relax_longcall1, nds32_elf_relax_longcall2): Likewise.
(nds32_elf_relax_longcall3, nds32_elf_relax_longjump1): Likewise.
(nds32_elf_relax_longjump2, nds32_elf_relax_longjump3): Likewise.
(nds32_elf_relax_longcall4, nds32_elf_relax_longcall5): Likewise.
(nds32_elf_relax_longcall6, nds32_elf_relax_longjump4): Likewise.
(nds32_elf_relax_longjump5, nds32_elf_relax_longjump6): Likewise.
(nds32_elf_relax_longjump7, nds32_elf_relax_loadstore): Likewise.
(nds32_elf_relax_ptr, nds32_elf_ex9_build_hash_table): Likewise.
* elf32-nios2.c (nios2_elf32_relocate_section): Likewise.
* elf32-rx.c (UNSAFE_FOR_PID): Likewise.
* elf32-s390.c (invalid_tls_insn, elf_s390_relocate_section): Likewise.
* elf32-score.c (s3_bfd_score_elf_check_relocs): Likewise.
* elf32-score7.c (s7_bfd_score_elf_check_relocs): Likewise.
* elf32-sh.c (sh_elf_relax_section): Likewise.
(sh_elf_relax_delete_bytes, sh_elf_swap_insns): Likewise.
(sh_elf_relocate_section): Likewise.
* elf32-sh64.c (shmedia_prepare_reloc): Likewise.
* elf32-spu.c (spu_elf_relocate_section): Likewise.
* elf32-tic6x.c (elf32_tic6x_relocate_section): Likewise.
* elf32-tilepro.c (tilepro_elf_relocate_section): Likewise.
* elf32-v850.c (v850_elf_relax_section): Likewise.
* elf32-vax.c (elf_vax_check_relocs): Likewise.
(elf_vax_relocate_section): Likewise.
* elf32-xtensa.c (elf_xtensa_relocate_section): Likewise.
(extend_ebb_bounds_forward, extend_ebb_bounds_backward): Likewise.
(compute_text_actions, compute_ebb_proposed_actions): Likewise.
(do_fix_for_relocatable_link): Likewise.
* elf64-alpha.c (elf64_alpha_relax_got_load): Likewise.
(elf64_alpha_relax_with_lituse): Likewise.
* elf64-hppa.c (elf64_hppa_finish_dynamic_symbol): Likewise.
(elf_hppa_final_link_relocate): Likewise.
* elf64-ia64-vms.c (elf64_ia64_relax_section): Likewise.
(elf64_ia64_choose_gp, elf64_ia64_relocate_section): Likewise.
(elf64_vms_link_add_object_symbols): Likewise.
* elf64-mmix.c (mmix_elf_perform_relocation): Likewise.
(mmix_final_link_relocate): Likewise.
* elf64-s390.c (invalid_tls_insn): Likewise.
(elf_s390_relocate_section): Likewise.
* elf64-sh64.c (sh_elf64_relocate_section): Likewise.
* elf64-x86-64.c (elf_x86_64_tls_transition): Likewise.
(elf_x86_64_relocate_section): Likewise.
* elfcode.h (elf_slurp_symbol_table): Likewise.
* elfcore.h (elf_core_file_p): Likewise.
* elflink.c (elf_link_read_relocs_from_section): Likewise.
* elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Likewise.
(elfNN_aarch64_relocate_section): Likewise.
* elfnn-ia64.c (elfNN_ia64_relax_section): Likewise.
(elfNN_ia64_choose_gp, elfNN_ia64_relocate_section): Likewise.
* elfnn-riscv.c (riscv_elf_relocate_section): Likewise.
* elfxx-mips.c (_bfd_mips_elf_check_relocs): Likewise.
(_bfd_mips_elf_relocate_section): Likewise.
(_bfd_mips_elf_finish_dynamic_symbol, mips_finish_exec_plt): Likewise.
* elfxx-sparc.c (_bfd_sparc_elf_relocate_section): Likewise.
* elfxx-tilegx.c (tilegx_elf_relocate_section): Likewise.
* ieee.c (ieee_slurp_external_symbols): Likewise.
* ihex.c (ihex_write_object_content): Likewise.
* mach-o.c (bfd_mach_o_build_exec_seg_command): Likewise.
* merge.c (_bfd_merged_section_offset): Likewise.
* mmo.c (mmo_write_loc_chunk): Likewise.
(mmo_write_object_contents): Likewise.
* peXXigen.c (_bfd_XX_bfd_copy_private_bfd_data_common): Likewise.
* stabs.c (_bfd_link_section_stabs): Likewise.
* xcofflink.c (xcoff_link_add_symbols, xcoff_find_tc0): Likewise.
ld/
* testsuite/ld-arc/nps-1b.err: Update.
* testsuite/ld-x86-64/ilp32-11.d: Update.
|
|
One way to print 64-bit bfd_vma or bfd_size_type values on 32-bit
hosts is to cast the value to long long and use the 'll' modifier in
printf format strings. However, that's awkward because we also
support the Microsoft C library printf that uses 'I64' as a modifier
instead, and having variants of translated strings would not endear us
to the translation project. So, rewrite the 'll' modifier in
_doprint for Microsoft. Even with that capability it's not so nice
for 32-bit code to need casts to long long, so this patch makes 'L' a
modifier for bfd_vma rather than an alias for 'll'.
I've then used the new 'L' modifier to fix selected format strings.
* bfd.c (_doprnt): Rewrite "ll" and "L" modifiers to "I64" for
__MSVCRT__. Support "L" modifier for bfd_vma. Formatting.
* elf.c (setup_group): Use "Lx" to print sh_size.
(_bfd_elf_setup_sections): Remove unnecessary cast and print
unknown section type in hex.
(copy_special_section_fields): Style fix.
(bfd_section_from_shdr): Correct format for sh_link. Use a
common error message for all the variants of unrecognized
section types.
(assign_file_positions_for_load_sections): Use "Lx" for lma
adjust error message.
(assign_file_positions_for_non_load_sections): Formatting.
(rewrite_elf_program_header): Formatting. Use "Lx" for
bfd_vma values in error messages.
* elfcode.h (elf_slurp_reloc_table_from_section): Cast
ELF_R_SYM value to type expected by format.
* elflink.c (elf_link_read_relocs_from_section): Use "Lx"
in error messages.
(elf_link_add_object_symbols): Use "Lu" for symbol sizes.
(elf_link_input_bfd): Use "Lx" for r_info.
(bfd_elf_gc_record_vtinherit): Use "Lx" for offset.
|
|
All sections on a --just-syms bfd are discarded from the output, so
attaching linker created sections to such a bfd results in errors.
In other cases, like the .note.GNU-stack check, it's wrong to have a
--just-syms object potentially affect the output.
bfd/
* elflink.c (_bfd_elf_link_create_dynstrtab): Don't make dynobj
a --just-syms bfd.
(_bfd_elf_size_group_sections): Skip --just-syms bfds.
(bfd_elf_size_dynamic_sections): Ignore .note.GNU-stack and
.preinit_array on --just-syms bfds.
(_bfd_elf_gc_mark_extra_sections): Skip --just-syms bfds.
(elf_gc_sweep, bfd_elf_parse_eh_frame_entries): Likewise.
(bfd_elf_gc_sections, bfd_elf_discard_info): Likewise.
ld/
* emultempl/elf32.em (gld${EMULATION_NAME}_after_open): Skip
--just-syms bfds when looking for a place to attach .note.gnu.build-id
and .eh_frame_hdr sections. Delete dead code.
|
|
* elflink.c (bfd_elf_size_dynsym_hash_dynstr): Do not fail if the
bucketlist is empty because there are no symbols to add to the
list.
|
|
This arranges for __start and __stop symbols to be defined before
garbage collection, for all target formats. That should allow the
COFF and PE --gc-sections to keep a singleton orphan input section,
a feature lost by 2017-06-13 commit cbd0eecf26. The fancier ELF
treatment of keeping all input sections associated with a __start or
__stop symbol, from 2015-10-23 commit 1cce69b9dc, is retained.
.startof. and .sizeof. symbols are deliberately not defined before
garbage collection, so these won't affect garbage collection of
sections.
The patch also ensures __start, __stop, .startof. and .sizeof. symbols
are defined before target size_dynamic_sections is called, albeit
with a preliminary value, so that target code doesn't need to cope
with a symbol changing from undefined at size_dynamic_sections to
defined at relocate_section.
Also, a number of problems with the testcases have been fixed.
PR ld/20022
PR ld/21557
PR ld/21562
PR ld/21571
include/
* bfdlink.h (struct bfd_link_hash_entry): Delete undef.section.
bfd/
* targets.c (struct bfd_target): Add _bfd_define_start_stop.
(BFD_JUMP_TABLE_LINK): Likewise.
* elf-bfd.h (bfd_elf_define_start_stop): Declare.
* elflink.c (_bfd_elf_gc_mark_rsec): Update comment.
(bfd_elf_define_start_stop): New function.
* linker.c (bfd_generic_define_start_stop): New function.
* coff64-rs6000.c (rs6000_xcoff64_vec, rs6000_xcoff64_aix_vec): Init
new field.
* aout-adobe.c (aout_32_bfd_define_start_stop): Define.
* aout-target.h (MY_bfd_define_start_stop): Define.
* aout-tic30.c (MY_bfd_define_start_stop): Define.
* binary.c (binary_bfd_define_start_stop): Define.
* bout.c (b_out_bfd_define_start_stop): Define.
* coff-alpha.c (_bfd_ecoff_bfd_define_start_stop): Define.
* coff-mips.c (_bfd_ecoff_bfd_define_start_stop): Define.
* coff-rs6000.c (_bfd_xcoff_bfd_define_start_stop): Define.
* coffcode.h (coff_bfd_define_start_stop): Define.
* elfxx-target.h (bfd_elfNN_bfd_define_start_stop): Define.
* i386msdos.c (msdos_bfd_define_start_stop): Define.
* i386os9k.c (os9k_bfd_define_start_stop): Define.
* ieee.c (ieee_bfd_define_start_stop): Define.
* ihex.c (ihex_bfd_define_start_stop): Define.
* libbfd-in.h (_bfd_nolink_bfd_define_start_stop): Define.
* mach-o-target.c (bfd_mach_o_bfd_define_start_stop): Define.
* mmo.c (mmo_bfd_define_start_stop): Define.
* nlm-target.h (nlm_bfd_define_start_stop): Define.
* oasys.c (oasys_bfd_define_start_stop): Define.
* pef.c (bfd_pef_bfd_define_start_stop): Define.
* plugin.c (bfd_plugin_bfd_define_start_stop): Define.
* ppcboot.c (ppcboot_bfd_define_start_stop): Define.
* som.c (som_bfd_define_start_stop): Define.
* srec.c (srec_bfd_define_start_stop): Define.
* tekhex.c (tekhex_bfd_define_start_stop): Define.
* versados.c (versados_bfd_define_start_stop): Define.
* vms-alpha.c (vms_bfd_define_start_stop): Define.
(alpha_vms_bfd_define_start_stop): Define.
* xsym.c (bfd_sym_bfd_define_start_stop): Define.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
ld/
* emultempl/elf32.em (gld${EMULATION_NAME}_after_open): Don't set
__start/__stop syms here.
* ldlang.c (lang_set_startof): Delete.
(start_stop_syms, start_stop_count, start_stop_alloc): New vars.
(lang_define_start_stop, lang_init_start_stop, foreach_start_stop,
undef_start_stop, lang_undef_start_stop, lang_init_startof_sizeof,
set_start_stop, lang_finalize_start_stop): New functions.
(lang_process): Call _start_stop functions.
* testsuite/ld-elf/pr21562a.d: Use xfail rather than notarget.
Correct typos and list of xfail targets.
* testsuite/ld-elf/pr21562b.d: Likewise.
* testsuite/ld-elf/pr21562c.d: Likewise.
* testsuite/ld-elf/pr21562d.d: Likewise.
* testsuite/ld-elf/pr21562e.d: Likewise.
* testsuite/ld-elf/pr21562f.d: Likewise.
* testsuite/ld-elf/pr21562g.d: Likewise.
* testsuite/ld-elf/pr21562h.d: Likewise.
* testsuite/ld-elf/pr21562i.d: Likewise.
* testsuite/ld-elf/pr21562j.d: Likewise.
* testsuite/ld-elf/pr21562k.d: Likewise.
* testsuite/ld-elf/pr21562l.d: Likewise.
* testsuite/ld-elf/pr21562m.d: Likewise.
* testsuite/ld-elf/pr21562n.d: Likewise.
* testsuite/ld-elf/sizeofa.d: Likewise. Adjust to pass for generic ELF.
* testsuite/ld-elf/sizeofb.d: Likewise.
* testsuite/ld-elf/startofa.d: Likewise.
* testsuite/ld-elf/startofb.d: Likewise.
|
|
Currently, linker will define __start_SECNAME and __stop_SECNAME symbols
only for orphaned sections.
However, during garbage collection, ELF linker marks all sections with
references to __start_SECNAME and __stop_SECNAME symbols as used even
when section SECNAME isn't an orphaned section and linker won't define
__start_SECNAME nor __stop_SECNAME. And ELF linker stores the first
input section whose name matches __start_SECNAME or __stop_SECNAME in
u.undef.section for garbage collection. If these symbols are provided
in linker script, u.undef.section is set to the section where they will
defined by linker script, which leads to the incorrect output.
This patch changes linker to always define referenced __start_SECNAME and
__stop_SECNAME if the input section name is the same as the output section
name, which is always true for orphaned sections, and SECNAME is a C
identifier. Also __start_SECNAME and __stop_SECNAME symbols are marked
as hidden by ELF linker so that __start_SECNAME and __stop_SECNAME symbols
for section SECNAME in different modules are unique. For garbage
collection, ELF linker stores the first matched input section in the
unused vtable field.
bfd/
PR ld/20022
PR ld/21557
PR ld/21562
PR ld/21571
* elf-bfd.h (elf_link_hash_entry): Add start_stop. Change the
vtable field to a union.
(_bfd_elf_is_start_stop): Removed.
* elf32-i386.c (elf_i386_convert_load_reloc): Also check for
__start_SECNAME and __stop_SECNAME symbols.
* elf64-x86-64.c (elf_x86_64_convert_load_reloc): Likewise.
* elflink.c (_bfd_elf_is_start_stop): Removed.
(_bfd_elf_gc_mark_rsec): Check start_stop instead of calling
_bfd_elf_is_start_stop.
(elf_gc_propagate_vtable_entries_used): Skip __start_SECNAME and
__stop_SECNAME symbols. Updated.
(elf_gc_smash_unused_vtentry_relocs): Likewise.
(bfd_elf_gc_record_vtinherit): Likewise.
(bfd_elf_gc_record_vtentry): Likewise.
ld/
PR ld/20022
PR ld/21557
PR ld/21562
PR ld/21571
* ld.texinfo: Update __start_SECNAME/__stop_SECNAME symbols.
* ldlang.c (lang_insert_orphan): Move handling of __start_SECNAME
and __stop_SECNAME symbols to ...
(lang_set_startof): Here. Also define __start_SECNAME and
__stop_SECNAME for -Ur.
* emultempl/elf32.em (gld${EMULATION_NAME}_after_open): Mark
referenced __start_SECNAME and __stop_SECNAME symbols as hidden
and set start_stop for garbage collection.
* testsuite/ld-elf/pr21562a.d: New file.
* testsuite/ld-elf/pr21562a.s: Likewise.
* testsuite/ld-elf/pr21562a.t: Likewise.
* testsuite/ld-elf/pr21562b.d: Likewise.
* testsuite/ld-elf/pr21562b.s: Likewise.
* testsuite/ld-elf/pr21562b.t: Likewise.
* testsuite/ld-elf/pr21562c.d: Likewise.
* testsuite/ld-elf/pr21562c.t: Likewise.
* testsuite/ld-elf/pr21562d.d: Likewise.
* testsuite/ld-elf/pr21562d.t: Likewise.
* testsuite/ld-elf/pr21562e.d: Likewise.
* testsuite/ld-elf/pr21562f.d: Likewise.
* testsuite/ld-elf/pr21562g.d: Likewise.
* testsuite/ld-elf/pr21562h.d: Likewise.
* testsuite/ld-elf/pr21562i.d: Likewise.
* testsuite/ld-elf/pr21562j.d: Likewise.
* testsuite/ld-elf/pr21562k.d: Likewise.
* testsuite/ld-elf/pr21562l.d: Likewise.
* testsuite/ld-elf/pr21562m.d: Likewise.
* testsuite/ld-elf/pr21562n.d: Likewise.
* testsuite/ld-gc/pr20022.d: Likewise.
* testsuite/ld-gc/pr20022a.s: Likewise.
* testsuite/ld-gc/pr20022b.s: Likewise.
* testsuite/ld-gc/gc.exp: Run PR ld/20022 tests.
* testsuite/ld-gc/pr19161.d: Also accept local __start_SECNAME
symbol.
* testsuite/ld-gc/start.d: Likewise.
* testsuite/ld-x86-64/lea1a.d: Updated.
* testsuite/ld-x86-64/lea1b.d: Updated.
* testsuite/ld-x86-64/lea1d.d: Updated.
* testsuite/ld-x86-64/lea1e.d: Likewise.
|
|
against a symbol in a section removed by garbage collection.
PR ld/21524
* elflink.c (elf_link_adjust_relocs): Generate an error when
encountering a reloc against a symbol removed by garbage
collection.
|
|
This commit adds a new linker feature: the ability to resolve section
groups as part of a relocatable link.
Currently section groups are automatically resolved when performing a
final link, and are carried through when performing a relocatable link.
By carried through this means that one copy of each section group (from
all the copies that might be found in all the input files) is placed
into the output file. Sections that are part of a section group will
not match input section specifiers within a linker script and are
forcibly kept as separate sections.
There is a slight resemblance between section groups and common
section. Like section groups, common sections are carried through when
performing a relocatable link, and resolved (allocated actual space)
only at final link time.
However, with common sections there is an ability to force the linker to
allocate space for the common sections when performing a relocatable
link, there's currently no such ability for section groups.
This commit adds such a mechanism. This new facility can be accessed in
two ways, first there's a command line switch --force-group-allocation,
second, there's a new linker script command FORCE_GROUP_ALLOCATION. If
one of these is used when performing a relocatable link then the linker
will resolve the section groups as though it were performing a final
link, the section group will be deleted, and the members of the group
will be placed like normal input sections. If there are multiple copies
of the group (from multiple input files) then only one copy of the group
members will be placed, the duplicate copies will be discarded.
Unlike common sections that have the --no-define-common command line
flag, and INHIBIT_COMMON_ALLOCATION linker script command there is no
way to prevent group resolution during a final link, this is because the
ELF gABI specifically prohibits the presence of SHT_GROUP sections in a
fully linked executable. However, the code as written should make
adding such a feature trivial, setting the new resolve_section_groups
flag to false during a final link should work as you'd expect.
bfd/ChangeLog:
* elf.c (_bfd_elf_make_section_from_shdr): Don't initially mark
SEC_GROUP sections as SEC_EXCLUDE.
(bfd_elf_set_group_contents): Replace use of abort with an assert.
(assign_section_numbers): Use resolve_section_groups flag instead
of relocatable link type.
(_bfd_elf_init_private_section_data): Use resolve_section_groups
flag instead of checking the final_link flag for part of the
checks in here. Fix white space as a result.
* elflink.c (elf_link_input_bfd): Use resolve_section_groups flag
instead of relocatable link type.
(bfd_elf_final_link): Likewise.
include/ChangeLog:
* bfdlink.h (struct bfd_link_info): Add new resolve_section_groups
flag.
ld/ChangeLog:
* ld.h (struct args_type): Add force_group_allocation field.
* ldgram.y: Add support for FORCE_GROUP_ALLOCATION.
* ldlex.h: Likewise.
* ldlex.l: Likewise.
* lexsup.c: Likewise.
* ldlang.c (unique_section_p): Check resolve_section_groups flag
not the relaxable link flag.
(lang_add_section): Discard section groups when we're resolving
groups. Clear the SEC_LINK_ONCE flag if we're resolving section
groups.
* ldmain.c (main): Initialise resolve_section_groups flag in
link_info based on command line flags.
* testsuite/ld-elf/group11.d: New file.
* testsuite/ld-elf/group12.d: New file.
* testsuite/ld-elf/group12.ld: New file.
* NEWS: Mention new features.
* ld.texinfo (Options): Document --force-group-allocation.
(Miscellaneous Commands): Document FORCE_GROUP_ALLOCATION.
|
|
bfd/ChangeLog:
2017-06-06 Jose E. Marchesi <jose.marchesi@oracle.com>
* elflink.c (init_reloc_cookie_rels): Remove unused variable
`bed'.
|
|
Correct a commit e5713223cbc1 ("MIPS/BFD: For n64 hold the number of
internal relocs in `->reloc_count'") regression and change internal
relocation handling in the generic ELF BFD linker code such that, except
in the presence of R_SPARC_OLO10 relocations, a section's `reloc_count'
holds the number of internal rather than external relocations, making
the handling more consistent between GAS, which sets `->reloc_count'
with a call to `bfd_set_reloc', and LD, which sets `->reloc_count' as it
reads input sections.
The handling of dynamic relocations remains unchanged and they continue
holding the number of external relocations in `->reloc_count'; they are
also not converted to the internal form except in `elf_link_sort_relocs'
(which does not handle the general, i.e. non-n64-MIPS case of composed
relocations correctly as per the ELF gABI, though it does not seem to
matter for the targets we currently support).
The n64 MIPS backend is the only one with `int_rels_per_ext_rel' set to
non-one, and consequently the change is trivial for all the remaining
backends and targets.
bfd/
* elf-bfd.h (RELOC_AGAINST_DISCARDED_SECTION): Subtract `count'
from `reloc_count' rather than decrementing it.
* elf.c (bfd_section_from_shdr): Multiply the adjustment to
`reloc_count' by `int_rels_per_ext_rel'.
* elf32-score.c (score_elf_final_link_relocate): Do not multiply
`reloc_count' by `int_rels_per_ext_rel' for last relocation
entry determination.
(s3_bfd_score_elf_check_relocs): Likewise.
* elf32-score7.c (score_elf_final_link_relocate): Likewise.
(s7_bfd_score_elf_relocate_section): Likewise.
(s7_bfd_score_elf_check_relocs): Likewise.
* elf64-mips.c (mips_elf64_get_reloc_upper_bound): Remove
prototype and function.
(mips_elf64_slurp_one_reloc_table): Do not update `reloc_count'.
(mips_elf64_slurp_reloc_table): Assert that `reloc_count' is
triple rather than once the sum of REL and RELA relocation entry
counts.
(bfd_elf64_get_reloc_upper_bound): Remove macro.
* elflink.c (_bfd_elf_link_read_relocs): Do not multiply
`reloc_count' by `int_rels_per_ext_rel' for internal relocation
storage allocation size determination.
(elf_link_input_bfd): Multiply `.ctors' and `.dtors' section's
size by `int_rels_per_ext_rel'. Do not multiply `reloc_count'
by `int_rels_per_ext_rel' for last relocation entry
determination.
(bfd_elf_final_link): Do not multiply `reloc_count' by
`int_rels_per_ext_rel' for internal relocation storage
allocation size determination.
(init_reloc_cookie_rels): Do not multiply `reloc_count' by
`int_rels_per_ext_rel' for last relocation entry determination.
(elf_gc_smash_unused_vtentry_relocs): Likewise.
* elfxx-mips.c (_bfd_mips_elf_check_relocs): Likewise.
(_bfd_mips_elf_relocate_section): Likewise.
|
|
The pr20882 testcase fails on a number of targets that add attribute
or note sections to object files, and the default linker script says
those sections should be kept. This patch changes --gc-sections to
drop debug and special sections like .comment when no SEC_ALLOC
section in an object file is kept. The assumption is that debug
sections are describing code and data that will become part of the
final image in memory.
* elflink.c (_bfd_elf_gc_mark_extra_sections): Don't keep
debug and special sections when no non-note alloc sections in an
object are kept.
|
|
bfd/
* arc-got.h: Don't compare boolean values against TRUE or FALSE.
* elf-m10300.c: Likewise.
* elf.c: Likewise.
* elf32-arc.c: Likewise.
* elf32-bfin.c: Likewise.
* elf32-m68k.c: Likewise.
* elf32-nds32.c: Likewise.
* elf32-tilepro.c: Likewise.
* elflink.c: Likewise.
* elfnn-aarch64.c: Likewise.
* elfnn-riscv.c: Likewise.
* elfxx-tilegx.c: Likewise.
* mach-o.c: Likewise.
* peXXigen.c: Likewise.
* vms-alpha.c: Likewise.
* vms-lib.c: Likewise.
opcodes/
* aarch64-asm.c: Don't compare boolean values against TRUE or FALSE.
* aarch64-dis.c: Likewise.
* aarch64-gen.c: Likewise.
* aarch64-opc.c: Likewise.
binutils/
* strings.c: Don't compare boolean values against TRUE or FALSE.
gas/
* config/tc-aarch64.c: Don't compare booleans against TRUE or FALSE.
* config/tc-hppa.c: Likewise.
* config/tc-mips.c: Likewise.
* config/tc-score7.c: Likewise.
ld/
* emultempl/elf32.em: Don't compare boolean values against TRUE or FALSE.
* emultempl/pe.em: Likewise.
* emultempl/pep.em: Likewise.
* emultempl/xtensaelf.em: Likewise.
|
|
If a debug section is referenced by a kept debug section, it should
also be kept.
Some targets, like mips, keep input files when there are some special
sections, like .gnu.attributes, even if input file is unused otherwise.
In this case, all debug sections are kept. The new test will fail on
such targets. We can either fix those targets or XFAIL the test.
bfd/
PR ld/20882
* elflink.c (elf_gc_mark_debug_section): New function.
(_bfd_elf_gc_mark_extra_sections): Mark any debug sections
referenced by kept debug sections.
ld/
PR ld/20882
* testsuite/ld-gc/gc.exp: Run pr20882.
* testsuite/ld-gc/pr20882.d: New file.
* testsuite/ld-gc/pr20882a.s: Likewise.
* testsuite/ld-gc/pr20882b.s: Likewise.
* testsuite/ld-gc/pr20882c.s: Likewise.
|
|
Since the flag is now set only for regular object refs.
include/
* bfdlink.h (struct bfd_link_hash_entry <non_ir_ref>): Rename to
non_ir_ref_regular.
bfd/
* elf-m10300.c: Rename occurrences of non_ir_ref.
* elf32-arm.c: Likewise.
* elf32-bfin.c: Likewise.
* elf32-cr16.c: Likewise.
* elf32-cris.c: Likewise.
* elf32-d10v.c: Likewise.
* elf32-dlx.c: Likewise.
* elf32-fr30.c: Likewise.
* elf32-frv.c: Likewise.
* elf32-hppa.c: Likewise.
* elf32-i370.c: Likewise.
* elf32-i386.c: Likewise.
* elf32-iq2000.c: Likewise.
* elf32-lm32.c: Likewise.
* elf32-m32c.c: Likewise.
* elf32-m32r.c: Likewise.
* elf32-m68hc1x.c: Likewise.
* elf32-m68k.c: Likewise.
* elf32-mcore.c: Likewise.
* elf32-metag.c: Likewise.
* elf32-microblaze.c: Likewise.
* elf32-moxie.c: Likewise.
* elf32-msp430.c: Likewise.
* elf32-mt.c: Likewise.
* elf32-nios2.c: Likewise.
* elf32-or1k.c: Likewise.
* elf32-ppc.c: Likewise.
* elf32-rl78.c: Likewise.
* elf32-s390.c: Likewise.
* elf32-score.c: Likewise.
* elf32-score7.c: Likewise.
* elf32-sh.c: Likewise.
* elf32-tic6x.c: Likewise.
* elf32-tilepro.c: Likewise.
* elf32-v850.c: Likewise.
* elf32-vax.c: Likewise.
* elf32-xstormy16.c: Likewise.
* elf32-xtensa.c: Likewise.
* elf64-alpha.c: Likewise.
* elf64-hppa.c: Likewise.
* elf64-ia64-vms.c: Likewise.
* elf64-mmix.c: Likewise.
* elf64-ppc.c: Likewise.
* elf64-s390.c: Likewise.
* elf64-sh64.c: Likewise.
* elf64-x86-64.c: Likewise.
* elflink.c: Likewise.
* elfnn-aarch64.c: Likewise.
* elfnn-ia64.c: Likewise.
* elfnn-riscv.c: Likewise.
* elfxx-mips.c: Likewise.
* elfxx-sparc.c: Likewise.
* elfxx-tilegx.c: Likewise.
* linker.c: Likewise.
ld/
* plugin.c: Rename occurrences of non_ir_ref.
|
|
dynamic_ref_after_ir_def is a little odd compared to other symbol
flags in that as the name suggests, it is set only for certain
references after a definition. It turns out that setting a flag for
any non-ir reference from a dynamic object can be used to solve the
problem for which this flag was invented, which I think is a cleaner.
This patch does that, and sets non_ir_ref only for regular object
references.
include/
* bfdlink.h (struct bfd_link_hash_entry): Update non_ir_ref
comment. Rename dynamic_ref_after_ir_def to non_ir_ref_dynamic.
ld/
* plugin.c (is_visible_from_outside): Use non_ir_ref_dynamic.
(plugin_notice): Set non_ir_ref for references from regular
objects, non_ir_ref_dynamic for references from dynamic objects.
bfd/
* elf64-ppc.c (add_symbol_adjust): Transfer non_ir_ref_dynamic.
* elflink.c (elf_link_add_object_symbols): Update to use
non_ir_ref_dynamic.
(elf_link_input_bfd): Test non_ir_ref_dynamic in addition to
non_ir_ref.
* linker.c (_bfd_generic_link_add_one_symbol): Likewise.
|
|
For ELF targets --out-implib currently generates an executable file
(e_type is ET_EXEC) despite the file being expected to be linked against
some other object file to make an executable later. It seems therefore
more sensible to make the import library a relocatable object file
(e_type set to ET_REL).
Incidentally, as dicted by requirement 8 of
"ARM v8-M Security Extensions: Requirements on Development Tools"
(document ARM-ECM-0359818) version 1.0, import libraries generated when
using --cmse-implib *must* be relocatable object file so this commit
also adds an assert there in case the type of ELF import library is
changed again in the future.
2017-05-08 Thomas Preud'homme <thomas.preudhomme@arm.com>
bfd/
* elflink.c (elf_output_implib): Remove executable flag from import
library bfd.
* elf32-arm.c (elf32_arm_filter_implib_symbols): Assert that the import
library is a relocatable object file.
ld/
* testsuite/ld-arm/arm-elf.exp
(Secure gateway import library generation): Check e_type field
of import library and executable produced.
* testsuite/ld-arm/cmse-implib.type: Expectations for e_type field.
|
