Since LTO plugin may generate more than one ltrans.o file from one input
IR object as LTO wrapper ignores -flto-partition=none:
lto-wrapper.c:608:
604 /* Drop arguments that we want to take from the link line. */
605 case OPT_flto_:
606 case OPT_flto:
607 case OPT_flto_partition_:
608 continue;
the LTO wrapper approach is not only slow but also unreliable. Since
the LTO plugin API has been extended to add LDPT_ADD_SYMBOLS_V2 with
symbol type and section kind, we can use LDPT_ADD_SYMBOLS_V2 to get
symbol type, instead of invoking the LTO wrapper.
PR binutils/25640
* plugin.c (plugin_list_entry): Add has_symbol_type.
(add_symbols_v2): New function.
(bfd_plugin_open_input): Don't invoke LTO wrapper if LTO plugin
provides symbol type.
(try_load_plugin): Add LDPT_ADD_SYMBOLS_V2.
(bfd_plugin_canonicalize_symtab): Use LTO plugin symbol type if
available.
The object_p (and archive_p, core_file_p) functions are not supposed
to have any target specific malloc'd memory attached to the bfd on
their return. This should be obvious on a failure return, but it's
also true for a successful return. The reason is that even though the
object_p recognises the file, that particular target may not be used
and thus the bfd won't be closed calling close_and_cleanup for the
target that allocated the memory.
It turns out that the object_p bfd_target* return value isn't needed.
In all cases except ld/plugin.c the target is abfd->xvec and with
ld/plugin.c the target isn't used. So this patch returns a cleanup
function from object_p instead, called in bfd_check_format_matches to
tidy the bfd before trying a different target match. The only cleanup
that does anything at this stage is the alpha-vms one.
bfd/
* targets.c (bfd_cleanup): New typedef.
(struct bfd <_bfd_check_format>): Return a bfd_cleanup.
* libbfd-in.h (_bfd_no_cleanup): Define.
* format.c (bfd_reinit): Add cleanup parameter, call it.
(bfd_check_format_matches): Set cleanup from _bfd_check_format
call and pass to bfd_reinit. Delete temp, use abfd->xvec instead.
* aout-target.h (callback, object_p): Return bfd_cleanup.
* aout-tic30.c (tic30_aout_callback, tic30_aout_object_p): Likewise.
* archive.c (bfd_generic_archive_p): Likewise.
* binary.c (binary_object_p): Likewise.
* coff-alpha.c (alpha_ecoff_object_p): Likewise.
* coff-ia64.c (ia64coff_object_p): Likewise.
* coff-rs6000.c (_bfd_xcoff_archive_p, rs6000coff_core_p): Likewise.
* coff-sh.c (coff_small_object_p): Likewise.
* coff-stgo32.c (go32_check_format): Likewise.
* coff64-rs6000.c (xcoff64_archive_p, rs6000coff_core_p),
(xcoff64_core_p): Likewise.
* coffgen.c (coff_real_object_p, coff_object_p): Likewise.
* elf-bfd.h (bfd_elf32_object_p, bfd_elf32_core_file_p),
(bfd_elf64_object_p, bfd_elf64_core_file_p): Likewise.
* elfcode.h (elf_object_p): Likewise.
* elfcore.h (elf_core_file_p): Likewise.
* i386msdos.c (msdos_object_p): Likewise.
* ihex.c (ihex_object_p): Likewise.
* libaout.h (some_aout_object_p): Likewise.
* libbfd-in.h (bfd_generic_archive_p, _bfd_dummy_target),
(_bfd_vms_lib_alpha_archive_p, _bfd_vms_lib_ia64_archive_p): Likewise.
* libbfd.c (_bfd_dummy_target): Likewise.
* libcoff-in.h (coff_object_p): Likewise.
* mach-o-aarch64.c (bfd_mach_o_arm64_object_p),
(bfd_mach_o_arm64_core_p): Likewise.
* mach-o-arm.c (bfd_mach_o_arm_object_p),
(bfd_mach_o_arm_core_p): Likewise.
* mach-o-i386.c (bfd_mach_o_i386_object_p),
(bfd_mach_o_i386_core_p): Likewise.
* mach-o-x86-64.c (bfd_mach_o_x86_64_object_p),
(bfd_mach_o_x86_64_core_p): Likewise.
* mach-o.c (bfd_mach_o_header_p, bfd_mach_o_gen_object_p),
(bfd_mach_o_gen_core_p, bfd_mach_o_fat_archive_p): Likewise.
* mach-o.h (bfd_mach_o_object_p, bfd_mach_o_core_p),
(bfd_mach_o_fat_archive_p, bfd_mach_o_header_p): Likewise.
* mmo.c (mmo_object_p): Likewise.
* pef.c (bfd_pef_object_p, bfd_pef_xlib_object_p): Likewise.
* peicode.h (coff_real_object_p, pe_ILF_object_p),
(pe_bfd_object_p): Likewise.
* plugin.c (ld_plugin_object_p, bfd_plugin_object_p): Likewise.
* ppcboot.c (ppcboot_object_p): Likewise.
* rs6000-core.c (rs6000coff_core_p): Likewise.
* som.c (som_object_setup, som_object_p): Likewise.
* srec.c (srec_object_p, symbolsrec_object_p): Likewise.
* tekhex.c (tekhex_object_p): Likewise.
* vms-alpha.c (alpha_vms_object_p): Likewise.
* vms-lib.c (_bfd_vms_lib_archive_p, _bfd_vms_lib_alpha_archive_p),
(_bfd_vms_lib_ia64_archive_p, _bfd_vms_lib_txt_archive_p): Likewise.
* wasm-module.c (wasm_object_p): Likewise.
* xsym.c (bfd_sym_object_p): Likewise.
* xsym.h (bfd_sym_object_p): Likewise.
* aoutx.h (some_aout_object_p): Likewise, and callback parameter
return type.
* pdp11.c (some_aout_object_p): Likewise.
* plugin.c (register_ld_plugin_object_p): Update object_p
parameter type.
* plugin.h (register_ld_plugin_object_p): Likewise.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
* libcoff.h: Regenerate.
ld/
* plugin.c (plugin_object_p): Return a bfd_cleanup.
(plugin_cleanup): New function.
Since ar and ranlib don't need to know symbol types to work properly,
we should avoid calling lto-wrapper for them to speed them up.
bfd/
PR binutils/25584
* plugin.c (need_lto_wrapper_p): New.
(bfd_plugin_set_program_name): Add an int argument to set
need_lto_wrapper_p.
(get_lto_wrapper): Return FALSE if need_lto_wrapper_p isn't
set.
* plugin.h (bfd_plugin_set_program_name): Add an int argument.
binutils/
PR binutils/25584
* ar.c (main): Pass 0 to bfd_plugin_set_program_name.
* nm.c (main): Pass 1 to bfd_plugin_set_program_name.
Since plugin can be used only once in try_load_plugin, call dlclose
before return.
PR binutils/25355
* plugin.c (plugin_list_entry): Remove handle.
(try_load_plugin): Call dlclose before return.
try_load_plugin is updated to take either plugin name or plugin entry.
load_plugin is updated to search bfd-plugins directories first to build
a list of plugins and call try_load_plugin with each plugin on the list.
When --plugin is used, the plugin list only has one entry.
* plugin.c (try_load_plugin): Make plugin_list_iter an argument
and use it if it isn't NULL. Remove has_plugin_p argument. Add
a build_list_p argument. Don't search plugin_list. Short circuit
when building the plugin list.
(has_plugin): Renamed to has_plugin_list.
(bfd_plugin_set_plugin): Don't set has_plugin.
(bfd_plugin_specified_p): Check plugin_list instead.
(build_plugin_list): New function.
(load_plugin): Call build_plugin_list and use plugin_list.
Since plugin treats each object as independent, we must do a fresh dlopen
of plugin for each object.
PR binutils/25355
* plugin.c (try_claim): Always clean up for LTO wrapper.
(try_load_plugin): Treat each object as independent. Create a
copy for plugin name.
GCC LTO wrapper is needed to extract real symbols from LTO IR objects.
This patch does the following:
1. Set up GCC LTO wrapper for each LTO IR object.
2. Run GCC LTO wrapper to get the real object.
3. Extract symbol info from the real object.
4. Cleanup afterwards.
bfd/
PR binutils/25355
* configure.ac (HAVE_EXECUTABLE_SUFFIX): New AC_DEFINE.
(EXECUTABLE_SUFFIX): Likewise.
* config.in: Regenerated.
* configure: Likewise.
* plugin.c (bfd_plugin_close_and_cleanup): Removed.
(plugin_list_entry): Add all_symbols_read, cleanup_handler,
gcc, lto_wrapper, resolution_file, resolution_option, gcc_env,
real_bfd, real_nsyms, real_syms, lto_nsyms and lto_syms.
(get_lto_wrapper): New.
(setup_lto_wrapper_env): Likewise.
(current_plugin): Likewise.
(register_all_symbols_read): Likewise.
(register_cleanup): Likewise.
(get_symbols): Likewise.
(add_input_file): Likewise.
(bfd_plugin_close_and_cleanup): Likewise.
(claim_file): Removed.
(register_claim_file): Set current_plugin->claim_file.
(add_symbols): Make a copy of LTO symbols. Set lto_nsyms and
lto_syms in current_plugin.
(try_claim): Use current_plugin->claim_file. Call LTO plugin
all_symbols_read handler. Copy real symbols to plugin_data.
Call LTO plugin cleanup handler. Clean up for LTO wrapper.
(try_load_plugin): Don't reuse the previous plugin for LTO
wrapper. Set up GCC LTO wrapper if possible. Don't set
plugin_list_iter->claim_file.
(bfd_plugin_canonicalize_symtab): Use real LTO symbols if
possible.
* plugin.h (plugin_data_struct): Add real_bfd, real_nsyms and
real_syms.
ld/
PR binutils/25355
* testsuite/ld-plugin/lto.exp: Run PR binutils/25355 test.
* testsuite/ld-plugin/pr25355.c: New file.
* testsuite/ld-plugin/pr25355.d: Likewise.
* testsuite/lib/ld-lib.exp (run_cc_link_tests): Support compile
only dump.
This patch fixes the worst of the cases where libbfd might terminate
a program due to calling xstrdup or xmalloc. I've also fixed some
error paths that didn't clean up properly.
PR 24955
* libbfd-in.h (bfd_strdup): New inline function.
* archive.c (_bfd_get_elt_at_filepos): Use bfd_strdup. Close
bfd on error.
* elfcode.h (_bfd_elf_bfd_from_remote_memory): Use bfd_strdup.
* opncls.c (bfd_fopen): Use bfd_strdup. Close fd and stream
on error.
(bfd_openstreamr): Use bfd_strdup.
(bfd_openr_iovec, bfd_openw, bfd_create): Likewise.
* plugin.c (try_load_plugin): Use bfd_malloc.
* libbfd.h: Regenerate.
This patch restricts the section names matched in coff_section_type,
a function that translates section names to symbol type, and arranges
to translate section flags to symbol type before looking at names.
The latter change resulted in various test failures due to improper
section flags being used in tests, and by the plugin support, so fix
that too.
The new test fails on many ELF targets that lack .init/fini_array
in their scripts. I've just xfailed those. pru-elf oddly defines
__init_array_begin rather than __init_array_start. I've left that
target as a FAIL, and pj-elf too which reports an error for undefined
weak symbols.
bfd/
PR 24511
* syms.c (coff_section_type): Only allow '.', '$' and numeric
following the standard section names.
(bfd_decode_symclass): Prioritize section flag tests in
decode_section_type before name tests in coff_section_type.
* plugin.c (bfd_plugin_canonicalize_symtab): Init fake_section
and fake_common_section using BFD_FAKE_SECTION. Use "fake" as
their names and choose standard .text section flags for
fake_section.
ld/
PR 24511
* testsuite/ld-elf/pr14156a.d: Allow for .init/.fini being a
data section on hppa64.
* testsuite/ld-elf/pr14156b.d: Likewise.
* testsuite/ld-scripts/pr18963.t: Map standard sections to set
output section flags.
* testsuite/ld-scripts/sane1.t: Likewise.
* testsuite/ld-elf/init-fini-arrays.s: Reference __init_array_start
and __fini_array_start. Define __start et al.
* testsuite/ld-elf/pr24511.d: New test.
PR 23460
* plugin.c (struct plugin_list_entry): New structure.
(plugin_list): New variable.
(try_load_plugin): Place opened plugins on a list. Ensure that
the refcount in the dynamic loader is kept at 1.
PR 23460
* plugin.c (bfd_plugin_open_input): Close file descriptor if the
call to fstat fails.
(try_claim): Always close the file descriptor at the end of the
function.
(try_load_plugin): If a plugin has already been registered, then
skip the dlopen and onload steps and go straight to claiming the
file. If these is an error, close the plugin.
Best practice is to not mix lseek/read with fseek/fread on the same
underlying file descriptor, as not all stdio implementations will cope.
Since the plugin uses lseek/read while bfd uses fseek/fread this patch
reopens the file for exclusive use by the plugin rather than trying to
restore the file descriptor. That allows the plugin to read the file
after plugin_call_claim_file too.
bfd/
PR 23254
* plugin.c (bfd_plugin_open_input): Allow for possibility of
nested archives. Open file again for plugin.
(try_claim): Don't save and restore file position. Close file
if not claimed.
* sysdep.h (O_BINARY): Define.
ld/
PR 23254
* plugin.c (plugin_call_claim_file): Revert 2016-07-19 patch.
(plugin_object_p): Don't dup file descriptor.
Some messing with plugin code in order to not need arelt_size in
ld code. File descriptor handling in ld/plugin.c is tidied too,
simply duping the open fd rather than opening the file again.
bfd/
* elflink.c: Include plugin-api.h.
* plugin.c (bfd_plugin_open_input): New function, extracted from..
(try_claim): ..here.
* plugin.h: Don't include bfd.h.
(bfd_plugin_open_input): Declare.
binutils/
* ar.c: Include plugin-api.h.
* nm.c: Likewise.
ld/
* plugin.c: Don't include libbfd.h. Include plugin-api.h
before bfd/plugin.h.
(plugin_object_p): Use bfd_plugin_open_input.
ELF linker shouldn't skip the IR object when searching the symbol table
of an archive element. If linker doesn't know if the object file is an
IR object, it should give LTO plugin a chance to get the correct symbol
table and use the IR symbol table if the input is an IR object.
bfd/
PR ld/18250
PR ld/20267
* elflink.c: Include plugin.h if BFD_SUPPORTS_PLUGINS is
defined.
(elf_link_is_defined_archive_symbol): Call
bfd_link_plugin_object_p on unknown plugin object and use the
IR symbol table if the input is an IR object.
* plugin.c (bfd_link_plugin_object_p): New function.
* plugin.h (bfd_link_plugin_object_p): New prototype.
ld/
PR ld/20267
* testsuite/ld-plugin/lto.exp (lto_link_tests): Add test for
PR ld/20267.
(lto_run_tests): Likewise.
* testsuite/ld-plugin/pr20267a.c: New file.
* testsuite/ld-plugin/pr20267b.c: Likewise.
LTO plugin support in plugin_maybe_claim wants to close the IR bfd
after replacing it with the recompiled object, but can't do so for
archive elements due to various pointers that access the archive bfd.
Thin archives have the same problem. They too cannot have their
element bfds closed.
PR ld/20241
bfd/
* archive.c (open_nested_file): Set my_archive.
* bfd.c (_bfd_default_error_handler <%B>): Exclude archive file name
for thin archives.
* bfdio.c (bfd_tell): Don't adjust origin for thin archives.
(bfd_seek): Likewise.
* bfdwin.c (bfd_get_file_window): Likewise.
* cache.c (cache_bmmap): Likewise.
(bfd_cache_lookup_worker): Don't look in my_archive for thin archives.
* mach-o.c (bfd_mach_o_follow_dsym): Don't open my_archive for
thin archives.
* plugin.c (try_claim): Likewise.
* xcofflink.c (xcoff_link_add_dynamic_symbols): Use import path of
file within thin archive, not the archive.
binutils/
* bucomm.c (bfd_get_archive_filename): Return file name within thin
archive.
ld/
* ldmain.c (add_archive_element): Just print file name of file within
thin archives.
* ldmisc.c (vfinfo): Likewise.
* plugin.c (plugin_object_p): Open file within thin archives.
(plugin_maybe_claim): Expand comment.
Since existing ld and gold support the 64-bit (MIPS) ELF archives, we
can use the 64-bit (MIPS) ELF archives as 64-bit archives. Since the
plugin target is used to create archive in plugin-enabled ar, we need
a way to enable 64-bit archives in the plugin target. This patch adds
--enable-64-bit-archive to bfd to force 64-bit archives in ar and
ranlib. Since both 64-bit MIPS and s390 ELF targets currently use
64-bit archives, 64-bit archives are enabled by default for them.
64-bit archive is generated automatically if the archive is too big.
Tested on Linux/x86 and Linux/x86-64 with existing ld and gold.
bfd/
PR binutils/14625
* archive.c (bfd_slurp_armap): Replace
bfd_elf64_archive_slurp_armap with
_bfd_archive_64_bit_slurp_armap.
(bsd_write_armap): Call _bfd_archive_64_bit_write_armap if
BFD64 is defined and the archive is too big.
(coff_write_armap): Likewise.
* archive64.c (bfd_elf64_archive_slurp_armap): Renamed to ...
(_bfd_archive_64_bit_slurp_armap): This.
(bfd_elf64_archive_write_armap): Renamed to ...
(_bfd_archive_64_bit_write_armap): This.
* configure.ac: Add --enable-64-bit-archive.
(want_64_bit_archive): New. Set to true by default for 64-bit
MIPS and s390 ELF targets.
(USE_64_BIT_ARCHIVE): New AC_DEFINE.
* config.in: Regenerated.
* configure: Likewise.
* elf64-mips.c (bfd_elf64_archive_functions): Removed.
(bfd_elf64_archive_slurp_armap): Likewise.
(bfd_elf64_archive_write_armap): Likewise.
(bfd_elf64_archive_slurp_extended_name_table): Likewise.
(bfd_elf64_archive_construct_extended_name_table): Likewise.
(bfd_elf64_archive_truncate_arname): Likewise.
(bfd_elf64_archive_read_ar_hdr): Likewise.
(bfd_elf64_archive_write_ar_hdr): Likewise.
(bfd_elf64_archive_openr_next_archived_file): Likewise.
(bfd_elf64_archive_get_elt_at_index): Likewise.
(bfd_elf64_archive_generic_stat_arch_elt): Likewise.
(bfd_elf64_archive_update_armap_timestamp): Likewise.
* elf64-s390.c (bfd_elf64_archive_functions): Removed.
(bfd_elf64_archive_slurp_armap): Likewise.
(bfd_elf64_archive_write_armap): Likewise.
(bfd_elf64_archive_slurp_extended_name_table): Likewise.
(bfd_elf64_archive_construct_extended_name_table): Likewise.
(bfd_elf64_archive_truncate_arname): Likewise.
(bfd_elf64_archive_read_ar_hdr): Likewise.
(bfd_elf64_archive_write_ar_hdr): Likewise.
(bfd_elf64_archive_openr_next_archived_file): Likewise.
(bfd_elf64_archive_get_elt_at_index): Likewise.
(bfd_elf64_archive_generic_stat_arch_elt): Likewise.
(bfd_elf64_archive_update_armap_timestamp): Likewise.
* elfxx-target.h (TARGET_BIG_SYM): Use _bfd_archive_64_bit on
BFD_JUMP_TABLE_ARCHIVE if USE_64_BIT_ARCHIVE is defined and
bfd_elfNN_archive_functions isn't defined.
(TARGET_LITTLE_SYM): Likewise.
* libbfd-in.h (_bfd_archive_64_bit_slurp_armap): New prototype.
(_bfd_archive_64_bit_write_armap): Likewise.
(_bfd_archive_64_bit_slurp_extended_name_table): New macro.
(_bfd_archive_64_bit_construct_extended_name_table): Likewise.
(_bfd_archive_64_bit_truncate_arname): Likewise.
(_bfd_archive_64_bit_read_ar_hdr): Likewise.
(_bfd_archive_64_bit_write_ar_hdr): Likewise.
(_bfd_archive_64_bit_openr_next_archived_file): Likewise.
(_bfd_archive_64_bit_get_elt_at_index): Likewise.
(_bfd_archive_64_bit_generic_stat_arch_elt): Likewise.
(_bfd_archive_64_bit_update_armap_timestamp): Likewise.
* libbfd.h: Regenerated.
* plugin.c (plugin_vec): Use _bfd_archive_64_bit on
BFD_JUMP_TABLE_ARCHIVE if USE_64_BIT_ARCHIVE is defined.
binutils/
PR binutils/14625
* NEWS: Mention --enable-64-bit-archive.
In <https://sourceware.org/ml/binutils/2015-12/msg00190.html> (commit
4a07dc8135), Kwok fixed a problem with
the template used for a dummy BFD for an IR file for LTO on MinGW,
where the input and output formats are not the same.
A problem, however, remains in the case of linking for
x86_64-w64-mingw32 -m32, where LTO linking reports an ambiguity
between the pe-i386 and pei-i386 formats. An object (pe-i386) with
plugin data is being tested by the linker to see what formats match.
The default format initially set by the linker when
bfd_check_format_matches is called is pei-i386 (as that's the output
format from the linker script), which does not match, so the function
goes on to the loop over possible BFD vectors. The pe-i386 vector
matches, as it should. One other vector matches: the plugin vector.
bfd_check_format_matches tests a vector for matching by temporarily
modifying the BFD object to use that vector then using
_bfd_check_format on it. So the BFD object is temporarily using
plugin_vec. _bfd_check_format ends up using bfd_plugin_object_p which
uses plugin_object_p from ld which uses plugin_get_ir_dummy_bfd which
succeeds, having created a BFD based on link_info.output_bfd (because
srctemplate is the BFD temporarily using plugin_vec, even after Kwok's
patch link_info.output_bfd is all that's available to base the dummy
BFD on). So we end up with a match from the plugin vector which uses
the pei-i386 vector even though the pei-i386 vector itself does not
match the input object. (In the i686-mingw32 case, as opposed to this
multilib case, pe-i386 is the default BFD target, which would
short-circuit that logic.)
There are two cases of the linker handling inputs with a plugin: they
may be inputs that are also accepted by some non-plugin BFD format, as
here, or they may be a format that would not be recognized at all, as
with some tests in the ld testsuite. In the former case, there is no
need for BFD to accept the objects using the plugin vector, as the
linker has its own logic to allow plugins to claim objects accepted by
some other BFD vector. Thus, this patch arranges for the plugin
vector to have the lowest match priority, and for the priority from
that vector to be used in the relevant case (the attempted match to
the plugin vector results in TEMP pointing to the pei-i386 vector).
Tested for GCC and Binutils testsuites for x86_64-pc-linux-gnu, as
well as verifying that it fixes the observed LTO issue for
x86_64-w64-mingw32.
* plugin.c (plugin_vec): Set match priority to 255.
* format.c (bfd_check_format_matches) [BFD_SUPPORTS_PLUGINS]: When
matching against the plugin vector, take priority from there not
from TEMP.
Linker plugin_maybe_claim is the interface of linker plugin support.
This patch extracts linker plugin_maybe_claim into plugin_object_p and
makes it available to BFD via a new function:
void register_ld_plugin_object_p (const bfd_target *(*) (bfd *));
bfd_plugin_object_p calls plugin_object_p registered by linker first. It
adds an enum bfd_plugin_format field and a pointer to plugin dummy BFD so
that plugin_object_p stores plugin dummy BFD to allow plugin_maybe_claim
to retrieve it later.
bfd/
PR ld/17878
* bfd.c (bfd_plugin_format): New.
(bfd): Add plugin_format and plugin_dummy_bfd.
* plugin.c (try_load_plugin): Take a pointer to bfd_boolean
argument to return TRUE if any plugin is found. Set plugin_format.
(has_plugin): New.
(bfd_plugin_target_p): New.
(bfd_plugin_specified_p): Likewise.
(bfd_plugin_target_p): Likewise.
(register_ld_plugin_object_p): Likewise.
(bfd_plugin_set_plugin): Set has_plugin.
(load_plugin): Cache try_load_plugin result.
(bfd_plugin_object_p): Try ld_plugin_object_p first. Check
plugin_format.
* plugin.h (bfd_plugin_target_p): New.
(bfd_plugin_specified_p): Likewise.
(register_ld_plugin_object_p): Likewise.
* bfd-in2.h: Regenerated.
ld/
PR ld/17878
* plugin.c: Include ../bfd/plugin.h.
(plugin_get_ir_dummy_bfd): Call bfd_create with
link_info.output_bfd instead of srctemplate. Copy BFD info
from srctemplate only if it doesn't use BFD plugin target
vector.
(plugin_load_plugins): Call register_ld_plugin_object_p with
(plugin_object_p)
(plugin_maybe_claim): Renamed to ...
(plugin_object_p): This. Return dummy BFD target vector if
input is calimed by plugin library, otherwise return NULL.
Update plugin_format and plugin_dummy_bfd.
(plugin_maybe_claim): New. Use plugin_object_p.
xx
ar, nm and ranlib currently lack the ability to handle more than one
plugin in lib/bfd-plugins. This patch reshuffles the logic in plugin.c
to add this functionality. One can now place both llvm and gcc plugins
in this directory and have them loaded automatically.
Mixed gcc/llvm archives are also supported (but not very useful until
ld.bfd and ld.gold also would load multiple plugins and use them to
claim different object files).
PR 17422
* plugin.c (try_claim): New function. Moved from
bfd_plugin_object_p.
(try_load_plugin): Pass through bfd. Add test.
(load_plugin): Pass through bfd.
(bfd_plugin_object_p): Move logic to try_claim.
* configure.in (AC_CHECK_HEADERS): Test for windows.h and dlfcn.h.
* plugin.c: Guard include of dlfcn.h if HAVE_DLFCN_H is defined.
Add windows.h header include if HAVE_WINDOWS_H is defined.
(dlerror): New static function if windows variant is used instead
of dlfcn.h.
(dlclose): Likewise.
(dlopen): Likewise.
(dlsym): Likewise.
* configure: Regenerated.
* config.in: Regenerated.
H.J. Lu
Alan Modra
Zenith423
Nick Clifton
Joseph Myers
Markus Trippelsdorf
Kai Tietz