Ezra Sitorus [Mon, 17 Nov 2025 12:45:58 +0000 (12:45 +0000)]
gdb/aarch64: Tests for fpmr
Add tests for FPMR support in gdb/gdbserver. These tests check
availability of FPMR, reading/writing to FPMR, core file generation and
preservation under sighandler frame unwinding.
A run of the full gdb testsuite has been done on aarch64-none-linux-gnu
without FPMR support. The gdb.arch tests were run on Shrinkwrap with
FPMR support.
Approved-By: Luis Machado <luis.machado.foss@gmail.com>
Ezra Sitorus [Mon, 17 Nov 2025 12:45:58 +0000 (12:45 +0000)]
bfd/ELF: Core file support for AArch64 FPMR
The Floating Point Mode Register is a new register which controls the
behaviour of FP8 instructions. This is handled by the Linux kernel
through a new NT_ARM_FPMR register set.
This patch adds required code to support core file dumps with
NT_ARM_FPMR in them.
Jan Vrany [Mon, 17 Nov 2025 10:15:28 +0000 (10:15 +0000)]
gdb: change find_compunit_symtab_by_address to find_symbol_by_address
This commit changes objfile::find_compunit_symtab_by_address and
corresponding quick_symbol_functions::find_compunit_symtab_by_address
to find_symbol_by_address return symbol.
This will allow simplifying find_symbol_at_address (the only caller of
find_compunit_symtab_by_address) by removing the special-case for
-readnow and moving the logic down to readnow_functions.
Markus Metzger [Fri, 1 Aug 2025 09:53:44 +0000 (09:53 +0000)]
gdb, remote: fix set_thread () in start_remote ()
remote_target::start_remote_1 () calls set_continue_thread (minus_one_ptid)
with the intent to
/* Let the stub know that we want it to return the thread. */
set_continue_thread (minus_one_ptid);
I interpret it such that it expects a later get_current_thread () to
return the thread selected by the target:
/* We have thread information; select the thread the target
says should be current. If we're reconnecting to a
multi-threaded program, this will ideally be the thread
that last reported an event before GDB disconnected. */
ptid_t curr_thread = get_current_thread (wait_status);
This results in the packet sequence Hc-1, qC.
Hc simply sets cont_thread:
else if (cs.own_buf[1] == 'c')
cs.cont_thread = thread_id;
write_ok (cs.own_buf);
and qC returns the general thread. This doesn't match.
It also has some special treatment for null_ptid and minus_one_ptid:
Similarly, Hg has some special treatment for null_ptid:
if (cs.own_buf[1] == 'g')
{
if (thread_id == null_ptid)
{
/* GDB is telling us to choose any thread. Check if
the currently selected thread is still valid. If
it is not, select the first available. */
thread_info *thread = find_thread_ptid (cs.general_thread);
if (thread == NULL)
thread = get_first_thread ();
thread_id = thread->id;
}
cs.general_thread = thread_id;
The comment at Hg matches the intent of GDB for sending Hc-1.
Change the set_thread () call in remote_target::start_remote_1 () to
set_general_thread (any_thread_ptid);
This results in GDB sending Hg0 and gdbserver preserving the currently
selected thread that is later returned in response to qC.
CC: Thiago Jung Bauermann <thiago.bauermann@linaro.org> Approved-By: Tom Tromey <tom@tromey.com>
Simon Marchi [Mon, 17 Nov 2025 05:03:48 +0000 (00:03 -0500)]
gdb: build solib-svr4-linux.o when building for targets xtensa*-*-*linux*
When building a GDB configured with --target=xtensa-buildroot-linux-uclibc, we get:
CXXLD gdb
/usr/bin/ld: xtensa-linux-tdep.o: in function `xtensa_linux_init_abi(gdbarch_info, gdbarch*)':
/home/simark/src/binutils-gdb/gdb/xtensa-linux-tdep.c:115:(.text+0x102): undefined reference to `make_linux_ilp32_svr4_solib_ops(program_space*)'
Fix it by adding solib-svr4-linux.o to the list of objects build for
targets xtensa*-*-*linux*.
This change fixes issues with dynamic relocations. We now support
R_PARISC_FPTR64 relocations for local symbols for both LTOFF and
simple FPTR64 relocations. Allocation of dynrel relocations is
revised along the lines of ia64. OPDs are reduced in size to 16
bytes so .opd section is now identical to that generated by the
HP linker.
Small applications now link and run successfully on HP-UX but better
stub support is needed for executables larger than roughly 8 MB.
Many PCREL22F branches can't reach their target. This prevents
building any recent version of gcc.
2025-11-16 John David Anglin <danglin@gcc.gnu.org>
bfd/ChangeLog:
* elf64-hppa.c (OPD_ENTRY_SIZE): Change to 16 bytes.
(elf64_hppa_check_relocs): Revise maybe_dynamic calculation.
Revise R_PARISC_FPTR64 case to request dynrel when hh is
not NULL. Add local symbols to local dynamic symbol table.
Always add global symbols to dynamic symbol table when a
dynrel may be needed.
(allocate_global_data_opd): Update OPD entry allocation
for reduced OPD size.
(allocate_dynrel_entries): Rework along the lines of ia64.
(elf64_hppa_late_size_sections): Revise DLT allocation.
Revise OPD allocation.
(elf64_hppa_finalize_opd): Revise for reduced OPD size.
Remove unnecessary NULL check.
(elf64_hppa_finalize_dlt): Remove unnecessary NULL check.
(elf64_hppa_finalize_dynreloc): Rework along the lines of
ia64. Correct relocation handling.
(elf_hppa_final_link_relocate): Don't zero first two words
of OPD. Update relocation handling to output EPLT and
FPTR64 relocations for local symbols.
H.J. Lu [Sat, 15 Nov 2025 23:21:48 +0000 (07:21 +0800)]
ld-elfvers: Remove vers8.c
commit c8a8d3bb27743c6894b7d5406a84e809965b9266
Author: Ian Lance Taylor <ian@airs.com>
AuthorDate: Thu Mar 13 02:46:09 1997 +0000
Commit: Ian Lance Taylor <ian@airs.com>
CommitDate: Thu Mar 13 02:46:09 1997 +0000
Wed Mar 12 21:44:19 1997 Eric Youngdale <eric@andante.jic.com>
* ld-elfvers/vers.exp, *: New tests for symbol versioning.
* config/default.exp: Set ar and strip.
Maximilian Ciric [Fri, 14 Nov 2025 20:58:06 +0000 (20:58 +0000)]
MIPS/GAS: Select symbolic GPR and FPR names based on current ABI setting
Add GPR and FPR symbolic register names to GAS for all ABI choices,
selecting the set of names based on the ABI being assembled for.
This extends the existing feature where the oldabi and newabi would
provide different symbolic GPR names to the assembler. Both EABIs and
o64 are now supported along with symbolic FPR names for all ABI choices.
Signed-off-by: Maximilian Ciric <max.ciric@gmail.com>
Simon Marchi [Thu, 13 Nov 2025 21:51:58 +0000 (16:51 -0500)]
gdb: add microblaze-linux.xml to XMLTOC, regenerate microblaze-linux.c
microblaze-linux.c is out of date compared to the other .c files in the
features directory. I think it's because it's missing from XMLTOC. Add
it there and run the "cfiles" target, causing the updates to
microblaze-linux.c.
I thought that we could get rid of regformats/microblaze-linux.dat,
since microblaze-linux is described with an XML target, but apparently
not, I don't really understand (or forget) how these things work.
Change-Id: Idaa55980b3bbdcc6597e9bf332d5824759ef9d0f Approved-By: Tom Tromey <tom@tromey.com>
Simon Marchi [Thu, 13 Nov 2025 21:46:53 +0000 (16:46 -0500)]
gdb: remove tic6x .dat files
The tix6x gdbserver port was modified to use target descriptions in
commit 506fe5f49967 ("Change tic6x target descriptions"). The old
regformats .dat files were kept as a way to make sure the new target
descriptions matched the old register decsriptions. I think by now it's
not necessary to keep the .dat files.
I don't have a way to build-test this though.
Change-Id: Ia90b5ae6381234c6e95555201d3e65ed9be880ea Approved-By: Tom Tromey <tom@tromey.com>
Simon Marchi [Thu, 13 Nov 2025 21:00:48 +0000 (16:00 -0500)]
gdb, gdbsupport: use DISABLE_COPY_AND_ASSIGN in a few spots
Replace some explicitly deleted copy constructor and copy assignment
operator with the DISABLE_COPY_AND_ASSIGN macro for consistency
with the rest of the codebase.
Change-Id: If3fe2c4d7b3cb4530eace86d589116f805c7656f Approved-By: Tom Tromey <tom@tromey.com>
Tom Tromey [Tue, 4 Nov 2025 15:56:08 +0000 (08:56 -0700)]
Reject negative children in DAP
This changes DAP to ignore the case where a pretty-printer returns a
negative number from the num_children method. It didn't seem worth
writing a test case for this.
Tom Tromey [Tue, 4 Nov 2025 21:07:12 +0000 (14:07 -0700)]
Have DAP handle multiple breakpoints at same location
A user pointed out that if multiple breakpoints are set at the same
spot, in DAP mode, then changing the breakpoints won't reset all of
them.
The problem here is that the breakpoint map only stores a single
breakpoint, so if two breakpoints have the same key, only one will be
stored. Then, when breakpoints are changed, the "missing" breakpoint
will not be deleted.
The fix is to change the map to store a list of breakpoints.
Tom de Vries [Fri, 14 Nov 2025 10:43:44 +0000 (11:43 +0100)]
[gdb/testsuite] Fix gdb.rust/methods.exp on i686-linux
On i686-linux, with test-case gdb.rust/methods.exp I get:
...
(gdb) print x.take()
$5 = methods::HasMethods {value: 4}
(gdb) FAIL: $exp: print x.take()
...
The instructions for the function methods::HasMethods::take look like this:
... 00007b90 <_ZN7methods10HasMethods4take17hf373500ea3bd6e27E>:
7b90: 8b 44 24 04 mov 0x4(%esp),%eax
7b94: c3 ret
...
which is equivalent to what you get for:
...
$ cat test.c
int foo (int val) { return val; }
$ gcc test.c -O2 -S -o-
...
movl 4(%esp), %eax
ret
...
$
...
The inferior call mechanism however decides that this is a return_method_struct
function, and adds an implicit first parameter pointing to the return value
location. Then two things go wrong:
- the argument is written to a place where the code doesn't read from, and
- the return value is read from a place where the code doesn't write to.
AFAIU, both gdb and rustc are behaving correctly:
- there's no stable ABI and consequently rustc is at liberty to optimize this
function how it wants, and
- gdb cannot be expected to target an unstable ABI.
The solution is to mark the function for interoperability using 'extern "C"'.
Doing so causes a compilation warning:
...
warning: `extern` fn uses type `HasMethods`, which is not FFI-safe
--> gdb.rust/methods.rs:50:28
|
50 | pub extern "C" fn take(self) -> HasMethods {
| ^^^^ not FFI-safe
|
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute
to this struct
= note: this struct has unspecified layout
...
which we fix by using '#[repr(C)]'.
Jens Remus [Fri, 14 Nov 2025 08:42:13 +0000 (09:42 +0100)]
s390: Mention GOTIE20 relocation in TLS related comment
Commit bd1ea41b84b0 introduced the R_390_TLS_GOTIE20 relocation, but
missed to update a comment that mentions the related R_390_TLS_GOTIE12
relocation.
bfd/
* elf32-s390.c (allocate_dynrelocs): Mention GOTIE20 relocation
in TLS related comment.
* elf64-s390.c (allocate_dynrelocs): Likewise.
Jens Remus [Fri, 14 Nov 2025 08:42:13 +0000 (09:42 +0100)]
s390: Do not emit orphaned GOT entry for TLS IE to LE transition
Commit 69fc87f180bf introduced TLS support for s390 32-bit and 64-bit.
It defined GOT_TLS_IE_NLT in both elf32-s390.c and elf64-s390.c, but
erroneously assigned it the same value as GOT_TLS_IE in elf64-s390.c.
As a consequence the linker for s390 64-bit erroneously emitted an
orphaned GOT entry when performing TLS Initial Exec (IE) to Local
Exec (LE) transition optimization.
Correct the value of GOT_TLS_IE_NLT in elf64-s390.c. This causes the
liker to actually optimize away the GOT entry when performing IE to LE
transition. While at it add a comment that the suffix NLT denotes
"no literal (pool entry)".
Found while inspecting and cleaning up differences between elf32-s390.c
and elf64-s390.c.
bfd/
* elf32-s390.c (GOT_TLS_IE_NLT): Add comment that NLT denotes
no literal pool entry.
* elf64-s390.c (GOT_TLS_IE_NLT): Likewise. Correct value.
ld/testsuite/
* ld-s390/tlsbin_64.dd: Adjust expected test results.
* ld-s390/tlsbin_64.sd: Likewise.
Jens Remus [Fri, 14 Nov 2025 08:42:13 +0000 (09:42 +0100)]
s390: Check sreldynrelro in elf_s390_finish_dynamic_symbol
Add check for sreldynrelro being NULL, introduced by commit 5474d94f03ae
("dynrelro section for read-only dynamic symbols copied into
executable") in elf32-s390.c function elf_s390_finish_dynamic_symbol,
also to its elf64-s390.c counterpart.
Found while inspecting and cleaning up differences between elf32-s390.c
and elf64-s390.c.
bfd/
* elf64-s390.c (elf_s390_finish_dynamic_symbol): Add
sreldynrelro check from elf32-s390.c.
Fixes: 5474d94f03ae ("dynrelro section for read-only dynamic symbols copied into executable") Signed-off-by: Jens Remus <jremus@linux.ibm.com>
Jens Remus [Fri, 14 Nov 2025 08:42:12 +0000 (09:42 +0100)]
s390: Increment PC-relative relocation count for PC24DBL relocs
Commit fb798c50b2c8 added the R_390_PC24DBL relocation. Due to a copy
and paste error it messed up to increment the PC-relative relocation
count in elf64-s390.c function elf_s390_check_relocs (i.e. duplicate
check for R_390_PC16DBL).
Found while inspecting and cleaning up differences between elf32-s390.c
and elf64-s390.c.
bfd/
* elf64-s390.c (elf_s390_check_relocs): Increment PC-relative
relocation count for R_390_PC24DBL.
Jan Beulich [Fri, 14 Nov 2025 08:03:49 +0000 (09:03 +0100)]
bfd/ELF: properly mark bfd_elf_{,gc_common_}final_link() as private
They're solely used as hook functions (or helpers thereof), so aren't
intended to be invoked directly from outside the library. Add underscore
prefixes and make them hidden.
Jan Beulich [Fri, 14 Nov 2025 08:03:25 +0000 (09:03 +0100)]
bfd/ELF: nds32_convert_{16_to_32,32_to_16}() are exposed to gas
As non-private functions, they should come with full disambiguating
prefixes - add bfd_elf_ to both. Hence commit bf4128d0cc6d2 ("bfd/ELF:
mark internal NDS32 functions hidden") also wrongly added ATTRIBUTE_HIDDEN
to them.
Jan Beulich [Fri, 14 Nov 2025 08:03:06 +0000 (09:03 +0100)]
bfd/ELF: loongarch_{larch_reloc_name_lookup,adjust_reloc_bitsfield}() are exposed to gas
As non-private functions, they should come with full disambiguating
prefixes - add bfd_elf_ to both. Hence commit 2903d813fcc2 ("bfd/ELF: mark
internal LoongArch functions hidden") also wrongly added ATTRIBUTE_HIDDEN
to them.
While loongarch_get_uleb128_length() also falls in the same category,
having it live in libbfd, when outside of gas there's hardly any use to be
expected, isn't very useful. Drop the function altogether and simplify the
clearing of the ULEB128 in md_apply_fix().
For loongarch_larch_reloc_name_lookup() drop gas'es custom declaration;
the libbfd one ought to be used, for producer and consumer to "see" the
same one. Also drop ATTRIBUTE_UNUSED there, as that makes sense only for
parameters in function definitions.
Simon Marchi [Thu, 13 Nov 2025 16:47:08 +0000 (11:47 -0500)]
gdb: fix flake8 warnings in gdb.base/gdb-index-many-types.py
Fix those:
gdb/testsuite/gdb.base/gdb-index-many-types.py:17:18: F821 undefined name 'gdb'
gdb/testsuite/gdb.base/gdb-index-many-types.py:26:42: F821 undefined name 'gdb'
gdb/testsuite/gdb.base/gdb-index-many-types.py:29:16: F821 undefined name 'gdb'
gdb/testsuite/gdb.base/gdb-index-many-types.py:31:19: F821 undefined name 'gdb'
gdb/testsuite/gdb.base/gdb-index-many-types.py:33:16: F821 undefined name 'gdb'
gdb/testsuite/gdb.base/gdb-index-many-types.py:33:51: F821 undefined name 'gdb'
gdb/testsuite/gdb.base/gdb-index-many-types.py:47:17: E722 do not use bare 'except'
[gdb/symtab] Don't deduplicate variables in gdb-index
Which removed the de-duplication of variables. It is worth reading
the earlier commit as all the justifications for that patch also
apply to this one.
Currently, when building the gdb-index we sort the type entries,
moving declarations to the end of the entry list, and non-declarations
to the front. Then within each group, declarations, and
non-declarations, the index entries are sorted by CU offset.
We then emit the first entry for any given type name.
There are two problems with this.
First, a non-declaration entry could be a definition, but it could
also be a typedef. Now sure, a typedef is a type definition, but not
necessarily a useful one.
If we have a header file that contains:
typedef struct foo_t foo_t;
And a CU which makes use of 'foo_t', then the CU will include both a
typedef and a type declaration. The target of the typedef will be the
declaration. But notice, the CU will not include a type definition.
If we have two CUs, one which only sees the above typedef and
declaration, and another which sees the typedef and an actual type
definition, then the final list of entries for this type's name will
be:
1. A typedef entry that points at the declaration.
2. A typedef entry that points at the definition.
3. A definition.
4. A declaration.
Now (4) will get sorted to the end of the entry list. But the order
of (1), (2), and (3) will depend on the CU offset. If the CU which
containing the typedef and declaration has the smallest offset,
then (1) will be sorted to the front of the list of entries for this
type name. Due to the de-duplication code this means that only (1)
will be added to the gdb-index.
After GDB starts and parses the index, if a user references 'foo_t'
GDB will look in the index and find just (1). GDB loads the CU
containing (1) and finds both the typedef and the declaration. But
GDB does not find the full type definition. As a result GDB will
display 'foo_t' as an incomplete type.
This differs from the behaviour when no index is used. With no index
GDB expands the first CU containing 'foo_t', finds the typedef and
type declaration, decides that this is not good enough and carries on.
GDB will then expand the second CU and find the type's definition, GDB
now has a full understanding of the type, and can print the type
correctly.
We could solve this problem by marking typedefs as a distinct
sub-category of types, just as we do with declarations. Then we could
sort definitions to the front of the list, then typedefs, and finally,
declarations after that. This would, I think, mean that we always
prefer emitting a definition for a type, which would resolve this
first problem, or at least, it would resolve it well enough, but it
wouldn't fix the second problem.
The second problem is that the Python API and the 'info types' command
can be used to query all type symbols. As such, GDB needs to be able
to find all the CUs which contain a given type. Especially as it is
possible that a type might be defined differently within different
CUs.
NOTE: Obviously a program doing this (defining a type differently in
different CUs) would need to be mindful of the One Definition Rule,
but so long as the type doesn't escape outside of a single CU then
reusing a type name isn't, as I understand it, wrong. And even if
it is, the fact that it compiles, and could be a source of bugs,
means (in my opinion) that GDB should handle this case to enable
debugging of it.
Even something as simple as 'info types ....' relies on GDB being able
to find multiple entries for a given type in different CUs. If the
index only contains a single type entry, then this means GDB will see
different things depending on which CUs happen to have been expanded.
Given all of the above, I think that any attempt to remove type
entries from the gdb-index is unsafe and can result in GDB behaving
differently when using the gdb-index compared to using no index.
The solution is to remove the de-duplication code, which is what this
patch does.
Now that we no longer need to sort declarations to the end of the
entry list, I've removed all the code related to the special use of
GDB_INDEX_SYMBOL_KIND_UNUSED5 (which is how we marked declarations),
this cleans things up a little bit.
I've also renamed some of the functions away from minimize, now that
there's no minimization being done.
A problem was revealed by this change. When running the test
gdb.cp/stub-array-size.exp with the --target_board=cc-with-gdb-index,
I was seeing a failure using gcc 15.1.0.
This test has two CUs, and a type 'A'. The test description says:
Test size of arrays of stubbed types (structures where the full
definition is not immediately available).
Which I don't really understand given the test's source code. The
type 'A' is defined in a header, which is included in both CUs.
However, the test description does seem to be accurate; in one CU the
type looks like this:
So, for reasons that I don't understand, the type, despite (as far as
I can see) having its full definition available, is recorded only as
declared in one CU.
The test then performs some actions that rely on 'sizeof(A)' and
expects GDB to correctly figure out the size. This requires GDB to
find, and expand the CU containing the real definition of 'A'.
Prior to this patch GDB would sort the two type entries for 'A',
placing the declaration second, and then record only one entry, the
definition. When it came to expansion there was only one thing to
expand, and this is the declaration we needed. It happens that in
this test the definition is in the second CU, that is, the CU with the
biggest offset. This means that, if all index entries were considered
equal, the definition entry would be second. However, currently, due
to the way GDB forces definitions to the front, the entry for the
second CU, the definition, is placed first in the index, and with
de-duplication, this is the only entry added to the index.
After this patch, both the declaration and the definition are placed
in the index, and as the declaration is in the CU at offset 0, the
declaration is added first to the index.
This should be fine. When looking for 'A' GDB should expand the CU
containing the declaration, see that all we have is a declaration, and
so continue, next expanding the definition, at which point we're done.
However, in read-gdb-index.c, in the function
mapped_gdb_index::build_name_components, there is a work around for
gold bug PR gold/15646. Ironically, the bug here is that gold was not
removing duplicate index entries, and it is noted that this has a
performance impact on GDB. A work around for this was added to GDB in
commit:
[gdb/symtab] Make gold index workaround more precise
The problem specifically called out in the bug report is that
namespaces can appear in multiple CUs, and that trying to complete
'ns::misspelled' would expand every CU containing namespace 'ns' due
to the duplicate 'ns' type symbols.
The work around that was added in 8943b874760d9cf3 was to ignore
duplicate global symbols when expanding entries from the index. In
commit f030440daa989ae3 this work around was restricted to only ignore
duplicate type entries. This restriction was required to allow the
earlier de-duplication patch aef36dee93bf194c to function correctly.
Now that I'm taking the work started in aef36dee93bf194c to its
logical conclusion, and allowing duplicate type entries, the work
around of ignoring duplicate global type symbols is no longer needed,
and can be removed.
The associated test for this, added in 40d22035a7fc239a, is also
removed in this commit.
To be clear; the performance issue mentioned in PR gold/15646 is now
back again. But my claim is that gold was right all along to include
the duplicate index entries, and any performance hit we see as a
result, though unfortunate, is just a consequence of doing it right.
That doesn't mean there's not room for optimisation and improvement in
the future, though I don't have any immediate ideas, or plans in this
area. It's just we can't throw out a bunch of index entries that are
critical, and claim this as a performance optimisation.
I am seeing some failure with this patch when using the board file
dwarf5-fission-debug-types. These failures all have the error:
DWARF Error: wrong unit_type in unit header (is DW_UT_skeleton, should be DW_UT_type) [in module ....]
However, I ran the whole testsuite with this board, and this error
crops up often, so I don't think this is something specific to my
patch, so I'm choosing to ignore this.
Andrew Burgess [Wed, 29 Oct 2025 19:39:44 +0000 (19:39 +0000)]
gdb: symbol_search objects of different types are not the same
Consider the C construct:
typedef struct foo
{
int a;
int b;
} foo;
GDB will see two types here, 'struct foo' and the typedef 'foo'.
However, if we use 'info types foo' we will see this:
File test.c:
18: struct foo;
At least that's what I see with current HEAD of master. However, it
is really just luck that we see the 'struct' here. See more below.
When searching for symbols matching 'foo' GDB ends up in the function
global_symbol_searcher::add_matching_symbols, where we consider all
possible matching symbols. This will include the 'struct foo' and the
typedef 'foo'. However, before a new symbols is added to the results,
we attempt to remove duplicates with this code:
/* Match, insert if not already in the results. */
symbol_search ss (block, sym);
if (result_set->find (ss) == result_set->end ())
result_set->insert (ss);
If a symbol is already present in result_set then it will not be added
a second time.
The symbol_search equality check is done using the function
symbol_search::compare_search_syms, this function does a number of
checks, but at the end, any two symbols that are in the same block
within the same file, with the same name, are considered the same,
even if the types of those symbols are different.
This makes sense in most cases, it usually wouldn't make sense to have
two symbols within a single block with different types. But the
'struct foo' and typedef 'foo' case is a bit of a strange one. Within
DWARF and GDB we consider both of these as just types. But in C
types and structure names live in different namespaces, and so we can
have both in the same block. I don't think that GDB should consider
these two as the same, especially if we consider something really
ill-advised like this:
struct foo
{
int a;
int b;
};
typedef int foo;
This is perfectly valid C code, 'struct foo' and the typedef 'foo' are
in different namespaces, and can be used within the same block. But
please, never write C code like this.
Given the above, I think, when asked about 'foo', GDB should, report
both 'struct foo' and the typedef 'foo'.
To do this I propose extending symbol_search::compare_search_syms such
that if two symbol_search objects are in the same block, within the
same file, and they have the same name, then if just one of them is a
typedef, the two objects will not be considered equal. The results
will be sorted by line number if the line numbers are different, or,
if the line numbers are the same, the non-typedef will be sorted
first. This means that for something like this:
I mentioned earlier that it is really just luck that we see 'struct
foo'. I ran into this problem while working on another patch. When
testing with the 'debug-types' board file I was seeing the typedef
being reported rather than the struct. In "normal" DWARF given the
'typedef struct foo { ...} foo;' construct, the compiler will usually
emit the struct definition first, and then the typedef definition. So
when GDB parses the DWARF it sees the struct first. It is the typedef
that becomes the duplicate which is not added to the results list.
But with the 'debug-types' board the compiler moves the struct
definition out to the .debug_types section. And GDB now parses the CU
containing the typedef first, and then expands the structure
definition from the separate section afterwards. As a result, it is
the structure that is now considered the duplicate, and the typedef is
the result that gets reported.
I think this is yet another motivation for this patch. Changes like
this (the use of .debug_types section) shouldn't impact what results
GDB shows to the user.
There is an interesting update to the gdb.base/info-types.exp.tcl test
script. In this case the C results only needed to change to include
the typedef. The C++ results already included both the struct and the
typedef in the expected results. The reason for this is that C places
both the struct baz_t and the typedef for baz_t into the global block,
while C++ places the struct in the global block, and the typedef into
the static block. I have no idea why there's a difference in the
placement, but I'm choosing to believe the difference is correct. But
this explains why only the C results needed to change. If anything
this (I think) is yet another justification for this change; having C
not show the typedef in this case seems weird when the same source
code compiled as C++ does show the typedef.
Tom de Vries [Wed, 12 Nov 2025 10:08:31 +0000 (11:08 +0100)]
[gdb/testsuite] Use -std=c99 in gdb.base/nodebug.exp
With test-case gdb.base/nodebug.exp I run into:
...
gdb compile failed, gdb.base/nodebug.c: In function 'multf_noproto':
gdb.base/nodebug.c:63:1: warning: old-style function definition \
[-Wold-style-definition]
63 | multf_noproto (v1, v2)
| ^~~~~~~~~~~~~
...
Printing the variable in C mode:
...
$ gdb -q -batch outputs/gdb.rust/simple/simple \
-ex "b 161" \
-ex run \
-ex "set language c" \
-ex "p /x str_none"
...
$1 = {0x80000000, Some = {__0 = {vec = {buf = {inner = {ptr = {pointer = {pointer = 0xbfffedd8}, _marker = {<No data fields>}}, cap = {__0 = 0x80000000}, alloc = {<No data fields>}}, _marker = {<No data fields>}}, len = 0x41f083}}}}
...
shows us that the discriminant value is 0x80000000, which matches the "None"
variant:
...
<3><1427>: Abbrev Number: 16 (DW_TAG_structure_type)
<1428> DW_AT_name : Option<alloc::string::String>
<142c> DW_AT_byte_size : 12
<142d> DW_AT_accessibility: 1 (public)
<142e> DW_AT_alignment : 4
<4><142f>: Abbrev Number: 47 (DW_TAG_variant_part)
<1430> DW_AT_discr : <0x1434>
<5><1434>: Abbrev Number: 48 (DW_TAG_member)
<1435> DW_AT_type : <0x2cba>
<1439> DW_AT_alignment : 4
<143a> DW_AT_data_member_location: 0
<143b> DW_AT_artificial : 1
<5><143b>: Abbrev Number: 52 (DW_TAG_variant)
<143c> DW_AT_discr_value : 0x80000000
<6><1440>: Abbrev Number: 4 (DW_TAG_member)
<1441> DW_AT_name : None
<1445> DW_AT_type : <0x145a>
<1449> DW_AT_alignment : 4
<144a> DW_AT_data_member_location: 0
<6><144b>: Abbrev Number: 0
<5><144c>: Abbrev Number: 51 (DW_TAG_variant)
<6><144d>: Abbrev Number: 4 (DW_TAG_member)
<144e> DW_AT_name : Some
<1452> DW_AT_type : <0x146c>
<1456> DW_AT_alignment : 4
<1457> DW_AT_data_member_location: 0
<6><1458>: Abbrev Number: 0
<5><1459>: Abbrev Number: 0
...
but the dynamic type resolves to the "Some" variant instead.
This is caused by signedness confusion.
The DW_AT_discr_value 0x80000000 is encoded as an LEB128 number, and the
signedness is determined by the "tag type for the variant part", which in this
case is unsigned:
...
<1><2cba>: Abbrev Number: 6 (DW_TAG_base_type)
<2cbb> DW_AT_name : u32
<2cbf> DW_AT_encoding : 7 (unsigned)
<2cc0> DW_AT_byte_size : 4
...
However, the value gets interpreted as signed instead (value printed in
resolve_dynamic_struct):
...
(gdb) p /x variant_prop.m_data.variant_parts.m_array.variants.m_array[0].discriminants.m_array[0]
$3 = {low = 0xffffffff80000000, high = 0xffffffff80000000}
...
and then compared against an unsigned 0x80000000 in variant::matches().
Fix this in create_one_variant_part, by passing the required signedness as a
parameter to create_one_variant.
Tested on i686-linux and x86_64-linux.
Approved-By: Tom Tromey <tom@tromey.com>
PR rust/33620
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=33620
Tom de Vries [Tue, 11 Nov 2025 19:47:33 +0000 (20:47 +0100)]
[gdb/testsuite] Fix sizeof test in gdb.rust/simple.exp
On x86_64-linux, with test-case gdb.rust/simple.exp I get:
...
(gdb) print sizeof(e)^M
$52 = 24^M
(gdb) PASS: $exp: print sizeof(e)
...
but on i686-linux I get instead:
...
(gdb) print sizeof(e)^M
$52 = 20^M
(gdb) FAIL: $exp: print sizeof(e)
...
The variable e for which we print the size:
...
let e = MoreComplicated::Two(73);
...
has type MoreComplicated which is defined like this:
...
pub struct HiBob {
pub field1: i32,
field2: u64,
}
...
enum MoreComplicated {
One,
Two(i32),
Three(HiBob),
Four{this: bool, is: u8, a: char, struct_: u64, variant: u32},
}
...
The answer to the question what the size of the enum should be seems to be
non-trivial [1][2], but AFAICT it doesn't seem to be illegal that the size can
differ between different platforms.
Fix this by accepting both 20 and 24 as valid size.
Tested on x86_64-linux and i686-linux.
Approved-By: Tom Tromey <tom@tromey.com>
[1] https://doc.rust-lang.org/reference/types/enum.html
[2] https://doc.rust-lang.org/reference/type-layout.html#the-rust-representation
Andrew Burgess [Wed, 26 Jul 2023 15:26:15 +0000 (16:26 +0100)]
gdb: use current executable for 'remote exec-file' in some cases
This commit allows GDB to make use of the file set with the 'file'
command when starting a new inferior on an extended-remote target.
There are however some restrictions.
If the user has used 'set remote exec-file', then this setting is
always used in preference to the file set with the 'file' command.
Similarly, if the qExecAndArgs packet has succeeded, and GDB knows
that the remote target has an executable set, then this will be used
in preference to the file set with the 'file' command; this preserves
GDB's existing behaviour. In effect, when GDB connects to the remote
target, the remote sets the 'remote exec-file' and this prevents GDB
from using the 'file' filename.
And, GDB can only use the file set with the 'file' command if it
believes that both GDB and the remote target will both be able to
access this file. This means that one of these is true:
+ the the remote_target::filesystem_is_local function returns
true (see the implementation of that function for details of when
this can happen). This means GDB and the remote target can see
the same file system, GDB can just use the current executable's
filename as is, or
+ the user has set the 'file' to something with a 'target:' prefix,
e.g. 'file target:/path/to/exec'. In this last case, GDB will use
the exec filename without the 'target:' prefix, this filename is,
by definition, something the remote target can see, or
+ the sysroot has been updated by the user and no longer contains a
'target:' prefix. In this case, if the 'file' filename is within
the sysroot, then it is assumed the remote will also be able to
see a file with the same filename. For example, if the sysroot is
'/aa/', and the current executable is '/aa/bb/cc', then GDB will
tell the remote to run '/bb/cc'. One common case here is when the
sysroot is set to the empty string, which is usually done when GDB
and the remote target can see the same filesystem, in this case
GDB will use the current executable's filename unmodified.
If one of these conditions is met, then GDB will use the current
executable's filename (with possible modifications as mentioned
above), when starting a new extended-remote inferior, in all other
cases, GDB will use the file name set with 'set remote exec-file'.
This change could be useful any time a user is running a remote target
on the same machine as GDB, but I am specifically thinking of the case
where GDB is using a tool other than gdbserver, e.g. valgrind, as this
saves one additional step that a user must remember. The current
steps to start valgrind with GDB, as given on the valgrind
website (https://valgrind.org/docs/manual/manual-core-adv.html) are:
With this GDB work, and once support for the qExecAndArgs packet is
added to valgrind, then the 'set remote exec-file' line can be dropped
from those instructions.
This commit also extends the 'show remote exec-file' command so that
GDB will display the automatic value that it plans to use. Here's an
example of the new output:
$ gdb -q /tmp/hello
Reading symbols from /tmp/hello...
(gdb) set sysroot
(gdb) target extended-remote | ./gdbserver/gdbserver --multi --once -
Remote debugging using | ./gdbserver/gdbserver --multi --once -
Remote debugging using stdio
(gdb) show remote exec-file
The remote exec-file is unset, using automatic value "/tmp/hello".
The last line shows the new output.
Reviewed-By: Eli Zaretskii <eliz@gnu.org> Approved-By: Simon Marchi <simon.marchi@efficios.com>
Change-Id: I45e0e77b00701aa979e8f7f15f397836b4e19849 Approved-By: Maciej W. Rozycki <macro@orcam.me.uk> Tested-By: Maciej W. Rozycki <macro@orcam.me.uk>
Alan Modra [Tue, 11 Nov 2025 04:03:57 +0000 (14:33 +1030)]
objcopy binary symbol test
A small tidy that allows other symbols or warnings to appear in nm
output, and works around the case problem of windows drive letters
by simply omitting the $srcdir match.
* testsuite/binutils-all/objcopy.exp (binary_symbol): Check
objcopy and nm return status. Don't repeat prune_warnings
already done in binutils_run. Match each symbol separately,
reporting which match failed on a failure. Don't match
$srcdir in implicit test.
Sven Schnelle [Mon, 10 Nov 2025 21:07:17 +0000 (22:07 +0100)]
gdb/hppa: guess g packet size
With qemu supporting 64 bit now, add some code to determine the
register size of a hppa remote target.
Signed-off-by: Sven Schnelle <svens@stackframe.org> Approved-By: Simon Marchi <simon.marchi@efficios.com>
Change-Id: Iffade4e02d758b9cb20c8f206e812bf3205518f7
Tom de Vries [Mon, 10 Nov 2025 18:36:46 +0000 (19:36 +0100)]
[gdb/testsuite] Force DWARF in gdb.pascal
On i686-linux (and likewise arm-linux), I run into:
...
(gdb) file str-chars^M
Reading symbols from str-chars...^M
warning: stabs debug information is not supported.^M
(No debugging symbols found in str-chars)^M
(gdb) delete breakpoints^M
...
Fix this by using fpc option -gw2.
Tested on i686-linux.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
PR testsuite/33564
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=33564
Tom Tromey [Sun, 9 Nov 2025 18:27:30 +0000 (11:27 -0700)]
Add uses of _() to symmisc.c
A review of an earlier version of this series pointed out some missing
_() invocations in symmisc.c. This fixes the ones I thought were
appropriate. In some spots I chose not to add them because the text
didn't seem like something that ought to be translated.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
Tom de Vries [Mon, 10 Nov 2025 17:21:39 +0000 (18:21 +0100)]
[pre-commit] Set verbose=false for check-whitespace
Currently, the pre-commit check check-whitespace has verbose=true:
...
$ pre-commit run --all-files check-whitespace
check-whitespace........................................................Passed
- hook id: check-whitespace
- duration: 0.3s
$
...
That's not necessary, since:
- check-whitespace has no output if the check passes, and
- pre-commit shows the output anyway if the check fails.
Fix this by removing the verbose setting, getting us instead:
...
$ pre-commit run --all-files check-whitespace
check-whitespace........................................................Passed
$
...
Approved-By: Simon Marchi <simon.marchi@efficios.com>
Tom de Vries [Mon, 10 Nov 2025 14:37:13 +0000 (15:37 +0100)]
[gdb/testsuite] Drop address from test name in gdb.mi/mi-memory-changed.exp
I ran the testsuite twice, once with target board unix, and once with target
board unix/-fPIE/-pie, compare the two sum files, and got for test-case
gdb.mi/mi-memory-changed.exp:
...
< PASS: $exp: set var *(unsigned int *) 0x4011b0 = 0xe5894855
---
> PASS: $exp: set var *(unsigned int *) 0x5555555551c3 = 0xe5894855
...
Fix this by dropping the concrete address from the test name:
...
PASS: $exp: set var *(unsigned int *) 0x${main_addr} = ${main_insn}
...
Tom de Vries [Mon, 10 Nov 2025 14:27:30 +0000 (15:27 +0100)]
[gdb/testsuite] Drop address from test name in gdb.arch/amd64-shadow-stack-corefile.exp
I ran the testsuite twice, compare the two sum files, and got for test-case
gdb.arch/amd64-shadow-stack-corefile.exp:
... 3077c3077
< PASS: $exp: OS corefile: pl3_ssp contents from core file 0x7f7a38
3fffe0
---
> PASS: $exp: OS corefile: pl3_ssp contents from core file 0x7f179e
...
Fix this by dropping the address from the test name.
Jan Beulich [Mon, 10 Nov 2025 10:36:25 +0000 (11:36 +0100)]
bfd/ELF: _bfd_elf_ppc_at_tls_transform() is exposed to gas
As a non-private function, it shouldn't have a "_bfd_" prefix, but merely
a "bfd_" one. Hence commit 50efe229ddf5 ("bfd/ELF: mark internal functions
hidden") also wrongly added ATTRIBUTE_HIDDEN to it.
Jan Dubiec [Fri, 7 Nov 2025 06:55:19 +0000 (07:55 +0100)]
ld: Fix a H8/300 specific test case
It seems that glob patterns no longer work in the test suite, at least
on some host/dejagnu/shell combinations. In any case it is better
here not to create a single relax-7?.o file from the two source files,
but to create two separate objects for linking.
ld/
* testsuite/ld-h8300/relax-7.d: Replace the glob pattern with
multiple "source" options.
Indu Bhagat [Sun, 9 Nov 2025 08:34:27 +0000 (00:34 -0800)]
libsframe: rename encoder to ectx for readability
Addressing (an old) review comment suggesting this housekeeping item.
Use consistent naming style in libsframe. sframe_decoder_ctx objects
are named 'dctx', so use 'ectx' for sframe_encoder_ctx objects.
Make necessary changes in all the applicable declarations and definitions.
Tom de Vries [Sun, 9 Nov 2025 08:18:43 +0000 (09:18 +0100)]
[gdb/testsuite] Fix main in gdb.trace/mi-trace-frame-collected.exp
With test-case gdb.trace/mi-trace-frame-collected.exp I run into:
...
gdb compile failed, gdb.trace/actions.c: In function 'main':
gdb.trace/actions.c:139:1: warning: old-style function definition \
[-Wold-style-definition]
139 | main (argc, argv, envp)
| ^~~~
...
Fix this by rewriting main into a prototyped function.
Indu Bhagat [Sun, 9 Nov 2025 07:33:22 +0000 (23:33 -0800)]
libsframe: fix checks in flip_fde
Adjust the sanity checks for flip_fde workflow and optional trailing
section padding to account for the case of ihp->sfh_fdeoff != 0 or
ihp->sfh_freoff != total FDEs size.
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
libsframe/
* sframe.c (flip_sframe): Fix checks in flip_fde to accommodate
cases when sfh_fdeoff != 0 or when SFrame FREs are placed after
a gap from SFrame FDEs.
Tom de Vries [Sun, 9 Nov 2025 07:07:57 +0000 (08:07 +0100)]
[gdb/testsuite] Use -std=c99 in gdb.base/callfuncs.exp
In test-case gdb.base/callfuncs.exp I run into:
...
gdb compile failed, gdb.base/callfuncs.c: In function 't_func_values':
gdb.base/callfuncs.c:611:12: error: too many arguments to function \
'func_arg1'; expected 0, have 2
611 | return ((*func_arg1) (5,5) == (*func_val1) (5,5)
| ~^~~~~~~~~~~ ~
...
Fix this by using -std=c99.
Tested on x86_64-linux.
Approved-By: Tom Tromey <tom@tromey.com>
PR testsuite/32756
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=32756
H.J. Lu [Thu, 6 Nov 2025 00:20:26 +0000 (08:20 +0800)]
readelf: Display the base symbol version as empty string
Update readelf to display the base symbol version as
Symbol table for image contains 5 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1: 0000000000003008 0 OBJECT GLOBAL DEFAULT 10 bar@@
2: 0000000000000000 0 OBJECT GLOBAL DEFAULT ABS VERS_1
3: 0000000000003008 0 OBJECT GLOBAL DEFAULT 10 bar@@VERS_1
4: 0000000000003000 0 OBJECT GLOBAL DEFAULT 10 foo@
instead of
Symbol table for image contains 5 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1: 0000000000003008 0 OBJECT GLOBAL DEFAULT 10 bar
2: 0000000000000000 0 OBJECT GLOBAL DEFAULT ABS VERS_1
3: 0000000000003008 0 OBJECT GLOBAL DEFAULT 10 bar@@VERS_1
4: 0000000000003000 0 OBJECT GLOBAL DEFAULT 10 foo
That is bar@@ and foo@ vs bar and foo.
binutils/
PR binutils/33599
* readelf.c (process_version_sections): Replace 0x8001 with
(VERSYM_HIDDEN | VERSYM_BASE).
(get_symbol_version_string): Likewise. Return "" for the base
version.
Tom Tromey [Thu, 16 Oct 2025 14:58:38 +0000 (08:58 -0600)]
Write entire buffer in gdbserver write_prim
We had a customer bug report which was eventually tracked down to
gdbserver not fully sending a target description to gdb. (This
presented as a timeout on the gdb side.)
The customer was using the WINAPI code, which does this:
In this setup, I think it's possible to have a partial write.
However, gdbserver does not account for this possibility, despite the
fact that write_prim documents this.
This patch attempts to fix the problem by always writing the full
buffer in write_prim. In this case the customer fixed their bug in a
different way, so we haven't actually tested this in the wild.
v2: Return bool from write_prim.
Reviewed-by: Kévin Le Gouguec <legouguec@adacore.com>
Simon Marchi [Wed, 5 Nov 2025 04:18:24 +0000 (23:18 -0500)]
gdb/dwarf: pass is_debug_types to dwarf2_per_cu constructor, make field private
Make the field private to make it clear it is never meant to change.
Pass its value through the constructor, and add a getter. The only
place that passes true is the signature_type constructor.
Change-Id: Ifb76bc015bca16696fd66cdf45c048b4ba713479 Approved-By: Tom Tromey <tom@tromey.com>
Simon Marchi [Wed, 5 Nov 2025 04:18:23 +0000 (23:18 -0500)]
gdb/dwarf: make some fields in dwarf2_per_cu private
Except for the m_length field, that is already private and has a setter,
make the fields whose values are passed through the constructor private.
The idea is that their values should be constant throughout the life of
the object. Add some getters and update the callers.
I wasn't sure if making some bitfields public and some private would
change how they are packed, so I checked with "ptype/o", it does not.
Change-Id: I7087bebf69e44d16a36c1dd4d7edf9b8bf085343 Approved-By: Tom Tromey <tom@tromey.com>
CXX elfread.o
/home/smarchi/src/binutils-gdb/gdb/elfread.c: In function ‘symfile_segment_data_up elf_symfile_segments(bfd*)’:
/home/smarchi/src/binutils-gdb/gdb/elfread.c:145:12: error: ‘is_debuginfo_file’ was not declared in this scope
145 | if (!is_debuginfo_file (abfd)
| ^~~~~~~~~~~~~~~~~
Simon Marchi [Thu, 6 Nov 2025 21:04:29 +0000 (16:04 -0500)]
gdb/testsuite: issue "no repeat" command before "no previous command to relaunch" test
I see this failure:
$ make check TESTS="gdb.base/with.exp" RUNTESTFLAGS="--target_board=native-extended-gdbserver"
FAIL: gdb.base/with.exp: repeat: reinvoke with no previous command to relaunch
It seems like that failure has always been there and I didn't notice?
I'm not sure what is the intent of the test exactly. It sounds like it
is meant to test what happens when you use command "with language ada"
as the very first command of a GDB session? However, clean_restart and
gdb_load issue some commands before that test. The different between
the native-extended-gdbserver board and the other boards is: for other
boards, the previous command is a "file" command, which is a "no repeat"
command, which gives the expected error message. With the
native-extended-gdbserver board, the previous command is "set remote
exec-file", which is a repeatable command.
"Fix" it by making a "no repeat" command just before the test, so that
it works the same regardless of the target board.
Change-Id: I254faf196f49e9efd492fc9dd5f6ce7b96f72af7 Approved-By: Tom Tromey <tom@tromey.com>
Jens Remus [Fri, 7 Nov 2025 16:09:55 +0000 (17:09 +0100)]
s390: Bind defined symbol locally in PIE
Symbols defined in PIE should be bound locally, the same as -shared
-Bsymbolic.
Port x86 commit 4e0c91e45402 ("Bind defined symbol locally in PIE")
change of relocate_section as well as linker tests to s390. Similar as
done for other architectures with the following commits:
- AArch64: ac33b731d214 ("[AArch64] Bind defined symbol locally in PIE")
- ARM: 1dcb9720d62c ("[ARM] Bind defined symbol locally in PIE")
- RISC-V: 39c7793ba8be ("RISC-V: Bind defined symbol locally in PIE")
- x86: 4e0c91e45402 ("Bind defined symbol locally in PIE")
With this change symbols defined in an executable (i.e. PDE or PIE) are
bound locally, as they cannot be interposed. In the same way as symbols
defined in a shared library linked with -Bsymbolic are bound locally.
This also ensures that all defined symbols are bound locally in
static PIE.
Do not port the x86 change of check_relocs (now scan_relocs). None of
the linker tests where the change in condition triggers (e.g. bootstrap,
cdtest) produce different readelf -Wa output. The change appears to
affect accounting of space required for dynamic relocations. Instead of
accounting them in check_relocs and later filtering them away in
allocate_dynrelocs, they would not get accounted in the first place:
The change in the expression would only have an effect if the following
conditions are all met in addition to PIE: ALLOC, PC-relative
relocation, global symbol, not defined weak, and defined regular. In
this specific case the accounting of the PC relative relocation in
h->dyn_relocs would be skipped for PIE. But allocate_dynrelocs later
eliminates any PC-relative dynamic relocations if PIC (= PIE or shared
library) and SYMBOL_CALLS_LOCAL.
bfd/
PR ld/33141
* elf64-s390.c (elf_s390_relocate_section): Bind defined symbol
locally in PIE.
Jan Beulich [Fri, 7 Nov 2025 14:00:51 +0000 (15:00 +0100)]
bfd/ELF: _bfd_elf_link_create_dynamic_sections() is exposed to ld
As a non-private function, it shouldn't have "_bfd_" prefixes, but merely
a "bfd_" one. Even if, sadly, it needs exposing just for the sake for
VxWorks.
Jan Beulich [Fri, 7 Nov 2025 13:59:45 +0000 (14:59 +0100)]
bfd/ELF: _bfd_elf_large_com_section is exposed to gas and x86-only
As a non-private data item, it shouldn't have a "_bfd_" prefix, but merely
a "bfd_" one. Furthermore, as being x86-only (forever since its
introduction), it doesn't need to be present in libbfd.{a,so} at all for
other targets.