binutils-gdb/bfd/plugin.h

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/* Plugin support for BFD.
Copyright (C) 2009-2020 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef _PLUGIN_H_
#define _PLUGIN_H_
void bfd_plugin_set_program_name (const char *);
int bfd_plugin_open_input (bfd *, struct ld_plugin_input_file *);
void bfd_plugin_set_plugin (const char *);
Merge linker plugin handling into BFD plugin support 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
2015-02-11 14:01:03 +01:00
bfd_boolean bfd_plugin_target_p (const bfd_target *);
bfd_boolean bfd_plugin_specified_p (void);
bfd_boolean bfd_link_plugin_object_p (bfd *);
bfd_cleanup for object_p 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.
2020-03-02 05:51:09 +01:00
void register_ld_plugin_object_p (bfd_cleanup (*object_p) (bfd *));
typedef struct plugin_data_struct
{
int nsyms;
const struct ld_plugin_symbol *syms;
}
plugin_data_struct;
#endif