diff options
Diffstat (limited to 'binutils-2.24/bfd/plugin.c')
| -rw-r--r-- | binutils-2.24/bfd/plugin.c | 560 |
1 files changed, 0 insertions, 560 deletions
diff --git a/binutils-2.24/bfd/plugin.c b/binutils-2.24/bfd/plugin.c deleted file mode 100644 index 3306607f..00000000 --- a/binutils-2.24/bfd/plugin.c +++ /dev/null @@ -1,560 +0,0 @@ -/* Plugin support for BFD. - Copyright 2009, 2010, 2011, 2012 - 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. */ - -#include "sysdep.h" -#include "bfd.h" - -#if BFD_SUPPORTS_PLUGINS - -#include <assert.h> -#ifdef HAVE_DLFCN_H -#include <dlfcn.h> -#elif defined (HAVE_WINDOWS_H) -#include <windows.h> -#else -#error Unknown how to handle dynamic-load-libraries. -#endif -#include <stdarg.h> -#include "plugin-api.h" -#include "plugin.h" -#include "libbfd.h" -#include "libiberty.h" -#include <dirent.h> - -#if !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) - -#define RTLD_NOW 0 /* Dummy value. */ - -static void * -dlopen (const char *file, int mode ATTRIBUTE_UNUSED) -{ - return LoadLibrary (file); -} - -static void * -dlsym (void *handle, const char *name) -{ - return GetProcAddress (handle, name); -} - -static int ATTRIBUTE_UNUSED -dlclose (void *handle) -{ - FreeLibrary (handle); - return 0; -} - -static const char * -dlerror (void) -{ - return "Unable to load DLL."; -} - -#endif /* !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) */ - -#define bfd_plugin_close_and_cleanup _bfd_generic_close_and_cleanup -#define bfd_plugin_bfd_free_cached_info _bfd_generic_bfd_free_cached_info -#define bfd_plugin_new_section_hook _bfd_generic_new_section_hook -#define bfd_plugin_get_section_contents _bfd_generic_get_section_contents -#define bfd_plugin_get_section_contents_in_window _bfd_generic_get_section_contents_in_window -#define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data -#define bfd_plugin_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data -#define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data -#define bfd_plugin_bfd_set_private_flags _bfd_generic_bfd_set_private_flags -#define bfd_plugin_core_file_matches_executable_p generic_core_file_matches_executable_p -#define bfd_plugin_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name -#define bfd_plugin_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) -#define bfd_plugin_get_lineno _bfd_nosymbols_get_lineno -#define bfd_plugin_find_nearest_line _bfd_nosymbols_find_nearest_line -#define bfd_plugin_find_inliner_info _bfd_nosymbols_find_inliner_info -#define bfd_plugin_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol -#define bfd_plugin_read_minisymbols _bfd_generic_read_minisymbols -#define bfd_plugin_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol -#define bfd_plugin_set_arch_mach bfd_default_set_arch_mach -#define bfd_plugin_set_section_contents _bfd_generic_set_section_contents -#define bfd_plugin_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents -#define bfd_plugin_bfd_relax_section bfd_generic_relax_section -#define bfd_plugin_bfd_link_hash_table_create _bfd_generic_link_hash_table_create -#define bfd_plugin_bfd_link_hash_table_free _bfd_generic_link_hash_table_free -#define bfd_plugin_bfd_link_add_symbols _bfd_generic_link_add_symbols -#define bfd_plugin_bfd_link_just_syms _bfd_generic_link_just_syms -#define bfd_plugin_bfd_final_link _bfd_generic_final_link -#define bfd_plugin_bfd_link_split_section _bfd_generic_link_split_section -#define bfd_plugin_bfd_gc_sections bfd_generic_gc_sections -#define bfd_plugin_bfd_lookup_section_flags bfd_generic_lookup_section_flags -#define bfd_plugin_bfd_merge_sections bfd_generic_merge_sections -#define bfd_plugin_bfd_is_group_section bfd_generic_is_group_section -#define bfd_plugin_bfd_discard_group bfd_generic_discard_group -#define bfd_plugin_section_already_linked _bfd_generic_section_already_linked -#define bfd_plugin_bfd_define_common_symbol bfd_generic_define_common_symbol -#define bfd_plugin_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type - -static enum ld_plugin_status -message (int level ATTRIBUTE_UNUSED, - const char * format, ...) -{ - va_list args; - va_start (args, format); - printf ("bfd plugin: "); - vprintf (format, args); - putchar ('\n'); - va_end (args); - return LDPS_OK; -} - -/* Register a claim-file handler. */ -static ld_plugin_claim_file_handler claim_file; - -static enum ld_plugin_status -register_claim_file (ld_plugin_claim_file_handler handler) -{ - claim_file = handler; - return LDPS_OK; -} - -static enum ld_plugin_status -add_symbols (void * handle, - int nsyms, - const struct ld_plugin_symbol * syms) -{ - bfd *abfd = handle; - struct plugin_data_struct *plugin_data = - bfd_alloc (abfd, sizeof (plugin_data_struct)); - - plugin_data->nsyms = nsyms; - plugin_data->syms = syms; - - if (nsyms != 0) - abfd->flags |= HAS_SYMS; - - abfd->tdata.plugin_data = plugin_data; - return LDPS_OK; -} - -static const char *plugin_program_name; - -void -bfd_plugin_set_program_name (const char *program_name) -{ - plugin_program_name = program_name; -} - -static int -try_load_plugin (const char *pname) -{ - static void *plugin_handle; - int tv_size = 4; - struct ld_plugin_tv tv[tv_size]; - int i; - ld_plugin_onload onload; - enum ld_plugin_status status; - - plugin_handle = dlopen (pname, RTLD_NOW); - if (!plugin_handle) - { - (*_bfd_error_handler)("%s\n", dlerror ()); - return 0; - } - - onload = dlsym (plugin_handle, "onload"); - if (!onload) - goto err; - - i = 0; - tv[i].tv_tag = LDPT_MESSAGE; - tv[i].tv_u.tv_message = message; - - ++i; - tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK; - tv[i].tv_u.tv_register_claim_file = register_claim_file; - - ++i; - tv[i].tv_tag = LDPT_ADD_SYMBOLS; - tv[i].tv_u.tv_add_symbols = add_symbols; - - ++i; - tv[i].tv_tag = LDPT_NULL; - tv[i].tv_u.tv_val = 0; - - status = (*onload)(tv); - - if (status != LDPS_OK) - goto err; - - if (!claim_file) - goto err; - - return 1; - - err: - plugin_handle = NULL; - return 0; -} - -static const char *plugin_name; - -void -bfd_plugin_set_plugin (const char *p) -{ - plugin_name = p; -} - -static int -load_plugin (void) -{ - char *plugin_dir; - char *p; - DIR *d; - struct dirent *ent; - int found = 0; - - if (plugin_name) - return try_load_plugin (plugin_name); - - if (plugin_program_name == NULL) - return 0; - - plugin_dir = concat (BINDIR, "/../lib/bfd-plugins", NULL); - p = make_relative_prefix (plugin_program_name, - BINDIR, - plugin_dir); - free (plugin_dir); - plugin_dir = NULL; - - d = opendir (p); - if (!d) - goto out; - - while ((ent = readdir (d))) - { - char *full_name; - struct stat s; - - full_name = concat (p, "/", ent->d_name, NULL); - if (stat(full_name, &s) == 0 && S_ISREG (s.st_mode)) - found = try_load_plugin (full_name); - free (full_name); - if (found) - break; - } - - out: - free (p); - if (d) - closedir (d); - - return found; -} - - -static const bfd_target * -bfd_plugin_object_p (bfd *abfd) -{ - int claimed = 0; - struct ld_plugin_input_file file; - bfd *iobfd; - static int have_loaded = 0; - static int have_plugin = 0; - - if (!have_loaded) - { - have_loaded = 1; - have_plugin = load_plugin (); - } - if (!have_plugin) - return NULL; - - file.name = abfd->filename; - - if (abfd->my_archive) - { - iobfd = abfd->my_archive; - file.offset = abfd->origin; - file.filesize = arelt_size (abfd); - } - else - { - iobfd = abfd; - file.offset = 0; - file.filesize = 0; - } - - if (!iobfd->iostream && !bfd_open_file (iobfd)) - return NULL; - - file.fd = fileno ((FILE *) iobfd->iostream); - - if (!abfd->my_archive) - { - struct stat stat_buf; - if (fstat (file.fd, &stat_buf)) - return NULL; - file.filesize = stat_buf.st_size; - } - - file.handle = abfd; - off_t cur_offset = lseek(file.fd, 0, SEEK_CUR); - claim_file (&file, &claimed); - lseek(file.fd, cur_offset, SEEK_SET); - if (!claimed) - return NULL; - - return abfd->xvec; -} - -/* Copy any private info we understand from the input bfd - to the output bfd. */ - -static bfd_boolean -bfd_plugin_bfd_copy_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED, - bfd *obfd ATTRIBUTE_UNUSED) -{ - BFD_ASSERT (0); - return TRUE; -} - -/* Copy any private info we understand from the input section - to the output section. */ - -static bfd_boolean -bfd_plugin_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, - asection *isection ATTRIBUTE_UNUSED, - bfd *obfd ATTRIBUTE_UNUSED, - asection *osection ATTRIBUTE_UNUSED) -{ - BFD_ASSERT (0); - return TRUE; -} - -/* Copy any private info we understand from the input symbol - to the output symbol. */ - -static bfd_boolean -bfd_plugin_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED, - asymbol *isymbol ATTRIBUTE_UNUSED, - bfd *obfd ATTRIBUTE_UNUSED, - asymbol *osymbol ATTRIBUTE_UNUSED) -{ - BFD_ASSERT (0); - return TRUE; -} - -static bfd_boolean -bfd_plugin_bfd_print_private_bfd_data (bfd *abfd ATTRIBUTE_UNUSED, PTR ptr ATTRIBUTE_UNUSED) -{ - BFD_ASSERT (0); - return TRUE; -} - -static char * -bfd_plugin_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED) -{ - BFD_ASSERT (0); - return NULL; -} - -static int -bfd_plugin_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) -{ - BFD_ASSERT (0); - return 0; -} - -static int -bfd_plugin_core_file_pid (bfd *abfd ATTRIBUTE_UNUSED) -{ - BFD_ASSERT (0); - return 0; -} - -static long -bfd_plugin_get_symtab_upper_bound (bfd *abfd) -{ - struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; - long nsyms = plugin_data->nsyms; - - BFD_ASSERT (nsyms >= 0); - - return ((nsyms + 1) * sizeof (asymbol *)); -} - -static flagword -convert_flags (const struct ld_plugin_symbol *sym) -{ - switch (sym->def) - { - case LDPK_DEF: - case LDPK_COMMON: - case LDPK_UNDEF: - return BSF_GLOBAL; - - case LDPK_WEAKUNDEF: - case LDPK_WEAKDEF: - return BSF_GLOBAL | BSF_WEAK; - - default: - BFD_ASSERT (0); - return 0; - } -} - -static long -bfd_plugin_canonicalize_symtab (bfd *abfd, - asymbol **alocation) -{ - struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; - long nsyms = plugin_data->nsyms; - const struct ld_plugin_symbol *syms = plugin_data->syms; - static asection fake_section; - static asection fake_common_section; - int i; - - fake_section.name = ".text"; - fake_common_section.flags = SEC_IS_COMMON; - - for (i = 0; i < nsyms; i++) - { - asymbol *s = bfd_alloc (abfd, sizeof (asymbol)); - - BFD_ASSERT (s); - alocation[i] = s; - - s->the_bfd = abfd; - s->name = syms[i].name; - s->value = 0; - s->flags = convert_flags (&syms[i]); - switch (syms[i].def) - { - case LDPK_COMMON: - s->section = &fake_common_section; - break; - case LDPK_UNDEF: - case LDPK_WEAKUNDEF: - s->section = bfd_und_section_ptr; - break; - case LDPK_DEF: - case LDPK_WEAKDEF: - s->section = &fake_section; - break; - default: - BFD_ASSERT (0); - } - - s->udata.p = (void *) &syms[i]; - } - - return nsyms; -} - -static void -bfd_plugin_print_symbol (bfd *abfd ATTRIBUTE_UNUSED, - PTR afile ATTRIBUTE_UNUSED, - asymbol *symbol ATTRIBUTE_UNUSED, - bfd_print_symbol_type how ATTRIBUTE_UNUSED) -{ - BFD_ASSERT (0); -} - -static void -bfd_plugin_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, - asymbol *symbol, - symbol_info *ret) -{ - bfd_symbol_info (symbol, ret); -} - -/* Make an empty symbol. */ - -static asymbol * -bfd_plugin_make_empty_symbol (bfd *abfd) -{ - asymbol *new_symbol = bfd_zalloc (abfd, sizeof (asymbol)); - if (new_symbol == NULL) - return new_symbol; - new_symbol->the_bfd = abfd; - return new_symbol; -} - -static int -bfd_plugin_sizeof_headers (bfd *a ATTRIBUTE_UNUSED, - struct bfd_link_info *info ATTRIBUTE_UNUSED) -{ - BFD_ASSERT (0); - return 0; -} - -const bfd_target plugin_vec = -{ - "plugin", /* Name. */ - bfd_target_unknown_flavour, - BFD_ENDIAN_LITTLE, /* Target byte order. */ - BFD_ENDIAN_LITTLE, /* Target headers byte order. */ - (HAS_RELOC | EXEC_P | /* Object flags. */ - HAS_LINENO | HAS_DEBUG | - HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), - (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS - | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ - 0, /* symbol_leading_char. */ - '/', /* ar_pad_char. */ - 15, /* ar_max_namelen. */ - 0, /* match priority. */ - - bfd_getl64, bfd_getl_signed_64, bfd_putl64, - bfd_getl32, bfd_getl_signed_32, bfd_putl32, - bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ - bfd_getl64, bfd_getl_signed_64, bfd_putl64, - bfd_getl32, bfd_getl_signed_32, bfd_putl32, - bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ - - { /* bfd_check_format. */ - _bfd_dummy_target, - bfd_plugin_object_p, - bfd_generic_archive_p, - _bfd_dummy_target - }, - { /* bfd_set_format. */ - bfd_false, - bfd_false, - _bfd_generic_mkarchive, - bfd_false, - }, - { /* bfd_write_contents. */ - bfd_false, - bfd_false, - _bfd_write_archive_contents, - bfd_false, - }, - - BFD_JUMP_TABLE_GENERIC (bfd_plugin), - BFD_JUMP_TABLE_COPY (bfd_plugin), - BFD_JUMP_TABLE_CORE (bfd_plugin), - BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), - BFD_JUMP_TABLE_SYMBOLS (bfd_plugin), - BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), - BFD_JUMP_TABLE_WRITE (bfd_plugin), - BFD_JUMP_TABLE_LINK (bfd_plugin), - BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), - - NULL, - - NULL /* backend_data. */ -}; -#endif /* BFD_SUPPORTS_PLUGIN */ |