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The gold subdir doesn't actually have a manual, so this hack doesn't
do anything. Plus the automake cygnus option was removed years ago
by Simon in d0ac1c44885daf68f631befa37e ("Bump to autoconf 2.69 and
automake 1.15.1"). So delete it here.
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sub-directories
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Regenerate Makefile.in files with the unmodified automake 1.15.1 to
remove
runstatedir = @runstatedir@
bfd/
* Makefile.in: Regenerate.
binutils/
* Makefile.in: Regenerate.
gas/
* Makefile.in: Regenerate.
gold/
* Makefile.in: Regenerate.
* testsuite/Makefile.in: Likewise.
gprof/
* Makefile.in: Regenerate.
ld/
* Makefile.in: Regenerate.
opcodes/
* Makefile.in: Regenerate.
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Regenerate configure files with the unmodified autoconf 2.69 to remove
--runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
bfd/
* configure: Regenerate.
binutils/
* configure: Regenerate.
gas/
* configure: Regenerate.
gold/
* configure: Regenerate.
gprof/
* configure: Regenerate.
ld/
* configure: Regenerate.
opcodes/
* configure: Regenerate.
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gold/testsuite/icf_test.cc:32:5: error: infinite recursion detected [-Werror=infinite-recursion]
32 | int kept_func()
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* testsuite/icf_test.cc: Avoid infinite recursion error.
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The result of running etc/update-copyright.py --this-year, fixing all
the files whose mode is changed by the script, plus a build with
--enable-maintainer-mode --enable-cgen-maint=yes, then checking
out */po/*.pot which we don't update frequently.
The copy of cgen was with commit d1dd5fcc38ead reverted as that commit
breaks building of bfp opcodes files.
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Gold version of commit 7aba54da42.
elfcpp/
* powerpc.h (R_PPC64_REL24_P9NOTOC): Define.
gold/
* powerpc.cc (Target_powerpc::maybe_skip_tls_get_addr_call,
is_branch_reloc, max_branch_delta): Handle R_PPC64_REL24_P9NOTOC.
(Target_powerpc::Branch_info::make_stub): Likewise.
(struct Plt_stub_ent): Add p9notoc_, p9off_, tsize_.
(struct Branch_stub_ent): Add p9notoc_, p9off_.
(Stub_table::add_plt_call_entry): Handle R_PPC64_REL24_P9NOTOC.
(Stub_table::add_long_branch_entry): Likewise.
(Stub_table::add_eh_frame): Likewise.
(Stub_table::plt_call_size): Return aligned size. Adjust callers.
Handle p9notoc_ sizing.
(Stub_table::do_write): Write out p9notoc_ stubs.
(Target_powerpc::Scan::get_reference_flags, local, global):
Handle R_PPC64_REL24_P9NOTOC.
(Target_powerpc::Relocate::relocate): Likewise.
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The fixes gold failures to handle inline PLT sequences properly.
PowerPC gold was always turning these back into direct calls due to
gsym->use_plt_offset() returning false. This is fixed for dynamic
linking by correcting get_reference_flags, and for static linking by
overriding use_plt_offset() in relocate(). The rest of the patch
revolves around needing to create PLT entries for inline PLT calls
when statically linking (for gcc -mlongcall). The lplt section
handled that for local symbols, now it does globals too.
* powerpc.cc (Target_powerpc::plt_off): Return proper section
for static link.
(Target_powerpc::symval_for_branch): Make public.
(Target_powerpc::make_lplt_section): Add Symbol_table* param.
Adjust all calls.
(Target_powerpc::make_local_plt_entry): Likewise.
(Target_powerpc::make_local_plt_entry): New variant for global syms.
(Powerpc_relobj::do_relocate_sections): Don't write lplt contents.
(Output_data_plt_powerpc::do_write): Write lplt contents here.
(Output_data_plt_powerpc::Output_data_plt_powerpc): Save
symbol table pointer. Adjust all uses.
(Output_data_plt_powerpc::add_entry): Add stash parameter. Don't
do dynamic reloc handling when no reloc section. Save symbol
for local plt entries.
(Output_data_plt_powerpc::add_local_entry): Save symbol.
(Output_data_plt_powerpc::Local_plt_ent): New class.
(Output_data_plt_powerpc::sym_ents_): New vector.
(Target_powerpc::Scan::get_reference_flags): Return
FUNCTION_CALL|RELATIVE_REF for inline plt relocs.
(Target_powerpc::Scan::global): Make entries in lplt for inline
plt call relocation symbols.
(Target_powerpc::Relocate::relocate): Rename has_plt_offset to
use_plt_offset. Set use_plt_offset for inline plt relocs.
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https://sourceware.org/bugzilla/ everywhere
bfd/
* configure.ac (ACX_BUGURL): Set to https://sourceware.org/bugzilla/
* po/Make-in (msgid-bugs-address): Likewise.
* README: Report bugs to the above.
* configure: Regenerate.
binutils/
* po/Make-in (msgid-bugs-address): Update.
gas/
* README: Update bug address. Delete mention of gcc.
* po/Make-in: Update bug address.
gold/
* po/Make-in: Update bug address.
gprof/
* po/Make-in: Update bug address.
ld/
* po/Make-in: Update bug address.
opcodes/
* po/Make-in: Update bug address.
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Current mainline gcc.
common_test_1.c: In function 'main':
common_test_1.c:56:14: error: comparison between two arrays [-Werror=array-compare]
56 | assert (c5 > c4);
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common_test_1.c:56:14: note: use '&c5[0] > &c4[0]' to compare the addresses
* testsuite/common_test_1.c: Avoid -Waddress warnings.
* testsuite/common_test_1_v1.c: Likewise.
* testsuite/common_test_1_v2.c: Likewise.
* testsuite/script_test_2.cc: Likewise.
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Place the .note.gnu.property section before all other note sections to
avoid being placed between other note sections with different alignments.
PR gold/28494
* layout.cc (Layout::create_note): Set order to ORDER_PROPERTY_NOTE
for the .note.gnu.property section.
* layout.h (Output_section_order): Add ORDER_PROPERTY_NOTE.
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PR 28417
* incremental.cc (Sized_relobj_incr::do_section_name): Avoid
std:string undefined behaviour.
* options.h (Search_directory::Search_directory): Likewise.
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My previous PR27625 patch had a problem or two. For one, the error
"__tls_get_addr call lacks marker reloc" on processing some calls
before hitting a call without markers typically isn't seen. Instead a
gold assertion fails. Either way it would be a hard error, which
triggers on a file contained in libphobos.a when running the gcc
testsuite. A warning isn't even appropriate since the call involved
is one built by hand without any of the arg setup relocations that
might result in linker optimisation.
So this patch reverts most of commit 0af4fcc25dd5, instead entirely
ignoring the problem of mis-optimising old-style __tls_get_addr calls
without marker relocs. We can't handle them gracefully without
another pass over relocations before decisions are made about GOT
entries in Scan::global or Scan::local. That seems too costly, just
to link object files from 2009. What's more, there doesn't seem to be
any way to allow the libphobos explicit __tls_get_addr call, but not
old TLS sequences without marker relocs. Examining instructions
before the __tls_get_addr call is out of the question: program flow
might reach the call via a branch. Putting an R_PPC64_TLSGD marker
with zero sym on the call might be a solution, but current linkers
will then merrily optimise away the call!
PR gold/27625
* powerpc.cc (Powerpc_relobj): Delete no_tls_marker_, tls_marker_,
and tls_opt_error_ variables and accessors. Remove all uses.
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We can't get at section->address() until everything is laid out, so
trying to generalise the offset calculation rather than using a value
of 0x8000 (the old object->toc_base_offset()) was bound to fail.
got->g_o_t() is a little better than a hard-coded 0x8000.
* powerpc.cc (Target_powerpc::Scan::local, global): Don't use
toc_pointer() here.
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Split .got into two piece, one with the header and entries for small
model got entries, the other with entries for medium/large model got
entries. The idea is to better support mixed pcrel/non-pcrel code
where non-pcrel small-model .toc entries need to be within 32k of the
toc pointer.
* target.h (Target::tls_offset_for_local): Add got param.
(Target::tls_offset_for_global): Likewise.
(Target::do_tls_offset_for_local, do_tls_offset_for_global): Likewise.
* output.h (Output_data_got::Got_entry::write): Add got param.
* output.cc (Output_data_got::Got_entry::write): Likewise, pass to
tls_offset_for_local/global calls.
(Output_data_got::do_write): Adjust to suit.
* s390.cc (Target_s390::do_tls_offset_for_local): Likewise.
(Target_s390::do_tls_offset_for_global): Likewise.
* powerpc.cc (enum Got_type): Extend with small types, move from
class Target_powerpc.
(Target_powerpc::biggot_): New.
(Traget_powerpc::do_tls_offset_for_local, do_tls_offset_for_global,
got_size, got_section, got_base_offset): Handle biggot_.
(Target_powerpc::do_define_standard_symbols): Adjust.
(Target_powerpc::make_plt_section, do_finalize_sections): Likewise.
(Output_data_got_powerpc::Output_data_got_powerpc): Only make
64-bit header for small got section.
(Output_data_got_powerpc::g_o_t): Only return a result for small
got section.
(Output_data_got_powerpc::write): Only write small got section
header.
(Target_powerpc::Scan::local, global): Select small/big Got_type
and section to suit reloc.
(Target_powerpc::Relocate::relocate): Similarly.
(Sort_toc_sections): Rewrite.
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Code in powerpc.cc is pretending to support a per-object toc pointer
value, but powerpc gold has no real support for multi-toc. This patch
removes the pretense, tidying quite a lot in preparation for a
followup patch. If multi-toc is ever to be supported, don't revert
this patch but start by adding object parameter to toc_pointer() and
an object to Branch_stub_key.
* powerpc.cc (Powerpc_relobj::toc_base_offset): Delete.
(Target_powerpc::toc_pointer): New function. Use throughout.
(Target_powerpc::got_base_offset): New function. Use throughout..
(Output_data_got_powerpc::got_base_offset): ..in place of
this. Delete.
(Output_data_got_powerpc::Output_data_got_powerpc): Init
header_index_ to -1u for 64-bit, and make header here.
(Output_data_got_powerpc::set_final_data_size, reserve_ent): Don't
make 64-bit header here.
(Output_data_got_powerpc::g_o_t): Return toc pointer offset in
section for 64-bit. Use throughout.
(Stub_table): Remove toc_base_off_ from Branch_stub_key, and
object param on add_long_branch_entry and find_long_branch_entry.
Adjust all uses.
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Pass addends to all the GOT handling functions, plus remove some
extraneous asserts.
PR 28192
* powerpc.cc (Output_data_got_powerpc): Add addend parameter to
all methods creating got entries.
(Target_powerpc::Scan::local): Pass reloc addend to got handling
functions, and when creating dynamic got relocations.
(Target_powerpc::Scan::global): Likewise.
(Target_powerpc::Relocate::relocate): Likewise. Remove extraneous
assertions.
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This takes care of writing out GOT entries with addends. The local
symbol case was already largely handled, except for passing the addend
to tls_offset_for_local which might need the addend in a
local_got_offset call. That's needed also in tls_offset_for_global.
I'm assuming here that GOT entries for function symbols won't ever
have addends, and in particular that a GOT entry referencing PLT call
stub code won't want an offset into the code.
PR 28192
* output.cc (Output_data_got::Got_entry::write): Include addend
in global symbol value. Pass addend to tls_offset_for_*.
* powerpc.cc (Target_powerpc::do_tls_offset_for_local): Handle addend.
(Target_powerpc::do_tls_offset_for_global): Likewise.
* s390.cc (Target_s390::do_tls_offset_for_local): Likewise.
(Target_s390::do_tls_offset_for_global): Likewise.
* target.h (Target::tls_offset_for_local): Add addend param.
(Target::tls_offset_for_global): Likewise.
(Target::do_tls_offset_for_local): Likewise.
(Target::do_tls_offset_for_global): Likewise.
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This patch makes all the Output_data_got methods that create new
entries accept an optional addend.
PR 28192
* output.h (Output_data_got::add_global): Add optional addend
parameter. Update comment. Delete overload without addend.
(Output_data_got::add_global_plt): Likewise.
(Output_data_got::add_global_tls): Likewise.
(Output_data_got::add_global_with_rel): Likewise.
(Output_data_got::add_global_pair_with_rel): Likewise.
(Output_data_got::add_local_plt): Likewise.
(Output_data_got::add_local_tls): Likewise.
(Output_data_got::add_local_tls_pair): Likewise.
(Output_data_got::reserve_local): Likewise.
(Output_data_got::reserve_global): Likewise.
(Output_data_got::Got_entry): Include addend in global sym
constructor. Delete local sym constructor without addend.
* output.cc (Output_data_got::add_global): Add addend param,
pass to got handling methods.
(Output_data_got::add_global_plt): Likewise.
(Output_data_got::add_global_with_rel): Likewise.
(Output_data_got::add_global_pair_with_rel): Likewise.
(Output_data_got::add_local_plt): Likewise.
(Output_data_got::add_local_tls_pair): Likewise.
(Output_data_got::reserve_local): Likewise.
(Output_data_got::reserve_global): Likewise.
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Some Output_data_got methods already have support for addends, but
were implemented as separate methods. This removes unnecessary code
duplication.
Relobj::local_has_got_offset and others there get a similar treatment.
Comments are removed since it should be obvious without a comment, and
the existing comments are not precisely what the code does. For
example, a local_has_got_offset call without an addend does not return
whether the local symbol has *a* GOT offset of type GOT_TYPE, it
returns whether there is a GOT entry of type GOT_TYPE for the symbol
with addend of zero.
PR 28192
* output.h (Output_data_got::add_local): Make addend optional.
(Output_data_got::add_local_with_rel): Likewise.
(Output_data_got::add_local_pair_with_rel): Likewise.
* output.cc (Output_data_got::add_local): Delete overload
without addend.
(Output_data_got::add_local_with_rel): Likewise.
(Output_data_got::add_local_pair_with_rel): Likewise.
* object.h (Relobj::local_has_got_offset): Make addend optional.
Delete overload without addend later. Update comment.
(Relobj::local_got_offset): Likewise.
(Relobj::set_local_got_offset): Likewise.
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This patch removes the addend from Local_got_entry_key, which is
unnecessary now that Got_offset_list has an addend. Note that it
might be advantageous to keep the addend in Local_got_entry_key when
linking objects containing a large number of section_sym+addend@got
relocations. I opted to save some memory by removing the field but
left the class there in case we might need to restore {sym,addend}
lookup. That's also why this change is split out from the
Got_offset_list change.
PR 28192
* object.h (Local_got_entry_key): Delete addend_ field.
Adjust constructor and methods to suit.
* object.cc (Sized_relobj::do_for_all_local_got_entries):
Update key.
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This is the first in a series of patches aimed at supporting GOT
entries against symbol plus addend generally for PowerPC64 rather than
just section symbol plus addend as gold has currently.
This patch adds an addend field to Got_offset_list, so that both local
and global symbols can have GOT entries with addend.
PR 28192
* object.h (Got_offset_list): Add addend_ field, init in both
constructors. Adjust all accessors to suit.
(Sized_relobj::do_local_has_got_offset): Adjust to suit.
(Sized_relobj::do_local_got_offset): Likewise.
(Sized_relobj::do_set_local_got_offset): Likewise.
* symtab.h (Symbol::has_got_offset): Add optional addend param.
(Symbol::got_offset, Symbol::set_got_offset): Likewise.
* incremental.cc (Local_got_offset_visitor::visit): Add unused
uint64_t parameter with FIXME.
(Global_got_offset_visitor::visit): Add unused uint64_t parameter.
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to match GNU ld.
gold/
* archive.cc (Library_base::should_include_member): Don't handle
--export-dynamic-symbol.
* symtab.cc (Symbol_table::do_add_undefined_symbols_from_command_line):
Likewise.
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Fixes a silly mistake in calculating the address of -Os out-of-line
register save/restore function copies. Copies of these linker defined
functions are added to stub sections when the original (in
target->savres_section) can't be reached.
* powerpc.cc (Target_powerpc::Relocate::relocate): Correct address
calculation of out-of-line save/restore function copies.
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As discussed previously, a.out support is now quite deprecated, and in
some cases removed, in both Binutils itself and NetBSD, so this legacy
default makes little sense. `netbsdelf*` and `netbsdaout*` still work
allowing the user to be explicit about there choice. Additionally, the
configure script warns about the change as Nick Clifton requested.
One possible concern was the status of NetBSD on NS32K, where only a.out
was supported. But per [1] NetBSD has removed support, and if it were to
come back, it would be with ELF. The binutils implementation is
therefore marked obsolete, per the instructions in the last message.
With that patch and this one applied, I have confirmed the following:
--target=i686-unknown-netbsd
--target=i686-unknown-netbsdelf
builds completely
--target=i686-unknown-netbsdaout
properly fails because target is deprecated.
--target=vax-unknown-netbsdaout builds completely except for gas, where
the target is deprecated.
[1]: https://mail-index.netbsd.org/tech-toolchain/2021/07/19/msg004025.html
---
bfd/config.bfd | 43 +++++++++++++--------
bfd/configure.ac | 5 +--
binutils/testsuite/binutils-all/nm.exp | 2 +-
binutils/testsuite/lib/binutils-common.exp | 7 +---
config/picflag.m4 | 4 +-
gas/configure.tgt | 9 +++--
gas/testsuite/gas/arm/blx-bl-convert.d | 2 +-
gas/testsuite/gas/arm/blx-local-thumb.d | 2 +-
gas/testsuite/gas/sh/basic.exp | 2 +-
gdb/configure.host | 34 +++++++----------
gdb/configure.tgt | 2 +-
gdb/testsuite/gdb.asm/asm-source.exp | 6 +--
intl/configure | 2 +-
ld/configure.tgt | 44 +++++++++++-----------
ld/testsuite/ld-arm/arm-elf.exp | 4 +-
ld/testsuite/ld-elf/elf.exp | 2 +-
ld/testsuite/ld-elf/shared.exp | 4 +-
libiberty/configure | 4 +-
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https://en.cppreference.com/w/cpp/types/NULL says NULL might be
defined as nullptr.
https://en.cppreference.com/w/cpp/language/reinterpret_cast says
reinterpret_cast can't be used on nullptr.
PR gold/28106
PR gold/27815
* gc.h (gc_process_relocs): Use static_cast in Section_id constructor.
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PR gold/28098
* reloc.cc (Track_relocs::advance): Skip R_*_NONE relocation entries
with r_sym of zero without counting in advance method.
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2.37 branch.
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Don't use nullptr, it requires -std=c++11 on versions of gcc prior to
6.1. It would be possible to arrange to pass -std=c++11 automatically
when required (top level configure does that for gcc builds) but that
seems overkill and since we're not up-to-date on the top level config
files would mean someone would need to sync those over.
PR gold/27815
* gc.h (gc_process_relocs): Use cast in Section_id constructor.
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...gold/gc.h:250:37: error: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second: [-Werror]
250 | (*secvec).push_back(Section_id(NULL, 0));
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PR gold/27815
* gc.h (gc_process_relocs): Use nullptr in Section_id constructor.
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PR 27834
* options.cc (General_options::General_options): Init bsymbolic_.
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gold/
PR 27834
* options.h (General_options): Make -Bsymbolic and
-Bsymbolic-functions special and adjust the help messages. Add
enum Bsymbolic_kind and -Bno-symbolic.
* options.cc (General_options): Define parse_Bno_symbolic,
parse_Bsymbolic_functions, and parse_Bsymbolic.
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This patch supports linking powerpc64 glibc with gold, specifically
the __tls_get_addr call in elf/dl-sym.c. That call lacks marker
relocations tying it to the arg setup instructions, but the arg setup
insns are also contructed lacking the usual relocations on a Global
Dynamic TLS code sequence. So there is no chance that anything in
that sequence might be wrongly edited by the linker.
In fact, the aim of linking glibc could have been supported by simply
omitting the error whenever TLS optimisation is disabled, as it is
when linking a shared library. The patch goes further than that,
disabling TLS GD and LD sequence optimisation on a per-object basis
for object files lacking marker relocs.
PR gold/27625
* powerpc.cc (Powerpc_relobj): Add no_tls_marker_, tls_marker_,
and tls_opt_error_ variables and accessors.
(Target_powerpc::Scan::local, global): Call set_tls_marker and
set_no_tls_marker for GD and LD code sequence relocations.
(Target_powerpc::Relocate::relocate): Downgrade the "lacks marker
reloc" error to a warning when safe to do so, and omit the error
entirely if not optimising TLS sequences. Do not optimise GD and
LD sequences for objects lacking marker relocs.
(Target_powerpc::relocate_relocs): Heed no_tls_marker here too.
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gold/
PR gold/27615
* errors.cc (Errors::trace): New method.
(gold_trace): New function.
* errors.h (Errors::trace): New method.
* gold.h (gold_trace): New function.
* object.cc (Input_objects::add_object): Use gold_trace to print
object file names.
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gold/
PR gold/pr23870
* testsuite/aarch64_pr23870_bar.c: Return a magic value.
* testsuite/aarch64_pr23870_foo.c: Check the magic value and return
success or failure.
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2021-03-19 Holger Berger <holger.berger@googlemail.com>
gold/
PR gold/26541
* output.cc (gold_fallocate): Use errno when calling system fallocate.
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PR gold/26585
* main.cc (main): Fix typo in previous patch.
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PR gold/26585
* config.in: Regenerate from previous commit.
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gold/
PR gold/26585
* configure.ac: Add check for mallinfo2.
* configure: Regenerate.
* main.cc (main): Use mallinfo2 if available.
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elfcpp/
PR gold/27246
* dwarf.h (enum DW_LNCT): Add line number table content type codes.
(enum DW_LINE_OPS): Reformat.
(enum DW_LINE_EXTENDED_OPS): Reformat.
(enum DW_CHILDREN): Reformat.
(enum DW_RLE): Add range list entry types.
(enum DW_SECT): Update values for DWARF 5.
gold/
PR gold/27246
* dwarf_reader.cc (Dwarf_abbrev_table::do_get_abbrev): Handle
DW_FORM_implicit_const.
(Dwarf_ranges_table::read_ranges_table): Add version parameter;
Adjust all callers. Look for .debug_rnglists section if DWARF 5.
(Dwarf_ranges_table::read_range_list_v5): New method.
(Dwarf_die::read_attributes): Handle new DWARF 5 DW_FORM codes.
(Dwarf_die::skip_attributes): Likewise.
(Dwarf_info_reader::do_parse): Support DWARF 5 unit header format.
(Dwarf_info_reader::read_3bytes_from_pointer): New method.
(Sized_dwarf_line_info::Sized_dwarf_line_info): Initialize
str_buffer_, str_buffer_start, reloc_map_, line_number_map_.
Look for .debug_line_str section.
(Sized_dwarf_line_info::read_header_prolog): Support DWARF 5 prolog.
(Sized_dwarf_line_info::read_header_tables): Rename to...
(Sized_dwarf_line_info::read_header_tables_v2): ... this.
(Sized_dwarf_line_info::read_header_tables_v5): New method.
(Sized_dwarf_line_info::process_one_opcode): Insert missing "this->".
Change advance_line to signed int64_t.
(Sized_dwarf_line_info::read_lines): Add endptr parameter; adjust
callers. Insert missing "this->".
(Sized_dwarf_line_info::read_line_mappings): Support DWARF 5.
(Sized_dwarf_line_info::do_addr2line): Add debug code.
* dwarf_reader.h (Dwarf_abbrev_table::Attribute): Add implicit_const
field. Adjust constructor.
(Dwarf_abbrev_table::add_sttribute): Add implicit_const parameter.
(Dwarf_ranges_table::read_ranges_table): Add version parameter.
(Dwarf_ranges_table::read_range_list_v5): New method.
(Dwarf_die): Remove unused attr_off field.
(Dwarf_info_reader::Dwarf_info_reader): Initialize unit_type_ field.
(Dwarf_info_reader::is_type_unit): New method.
(Dwarf_info_reader::read_3bytes_from_pointer): New method.
(Dwarf_info_reader::read_range_list): Call read_range_list_v5 for
DWARF 5 range lists.
(Dwarf_info_reader::is_type_unit_): Remove.
(Dwarf_info_reader::unit_type_): New field.
(Sized_dwarf_line_info::~Sized_dwarf_line_info): Delete
str_buffer_start_.
(Sized_dwarf_line_info::read_header_tables): Rename to...
(Sized_dwarf_line_info::read_header_tables_v2): ... this.
(Sized_dwarf_line_info::read_header_tables_v5): New method.
(Sized_dwarf_line_info::read_lines): Add endptr parameter.
(Sized_dwarf_line_info::Dwarf_line_infoHeader): Add address_size field.
(Sized_dwarf_line_info::str_buffer_): New field.
(Sized_dwarf_line_info::str_buffer_end_): New field.
(Sized_dwarf_line_info::str_buffer_start_): New field.
(Sized_dwarf_line_info::end_of_header_length_): New field.
(Sized_dwarf_line_info::end_of_unit_): New field.
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The .debug_line secton in DWARF5 has a byte for address size and a byte
for segment selector after DWARF version. Skip them for DWARF5.
PR gold/27246
* dwarf_reader.cc (Sized_dwarf_line_info::read_header_prolog):
Skip address size and segment selector for DWARF5.
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A testcase with only ifuncs can result in no plt section (ifunc plt
entries might instead be in iplt), which means we can get to this code
without a static link.
PR 27203
* powerpc.cc (do_plt_fde_location): Remove doing_static_link
assertion.
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