/* Plugin support for BFD.
- Copyright (C) 2009-2018 Free Software Foundation, Inc.
+ Copyright (C) 2009-2020 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#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_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_group_name bfd_generic_group_name
#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_link_hide_symbol _bfd_generic_link_hide_symbol
#define bfd_plugin_bfd_define_start_stop bfd_generic_define_start_stop
#define bfd_plugin_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type
#define bfd_plugin_bfd_link_check_relocs _bfd_generic_link_check_relocs
return LDPS_OK;
}
+struct plugin_list_entry
+{
+ /* These must be initialized for each IR object with LTO wrapper. */
+ ld_plugin_claim_file_handler claim_file;
+ ld_plugin_all_symbols_read_handler all_symbols_read;
+ ld_plugin_all_symbols_read_handler cleanup_handler;
+ char *resolution_file;
+ char *resolution_option;
+ bfd *real_bfd;
+ long real_nsyms;
+ asymbol **real_syms;
+ int lto_nsyms;
+ const struct ld_plugin_symbol *lto_syms;
+
+ struct plugin_list_entry *next;
+
+ /* These can be reused for all IR objects. */
+ const char *plugin_name;
+ char *gcc;
+ char *lto_wrapper;
+ char *gcc_env;
+ bfd_boolean initialized;
+};
+
+static const char *plugin_program_name;
+static int need_lto_wrapper_p;
+
+void
+bfd_plugin_set_program_name (const char *program_name,
+ int need_lto_wrapper)
+{
+ plugin_program_name = program_name;
+ need_lto_wrapper_p = need_lto_wrapper;
+}
+
+/* Use GCC LTO wrapper to covert LTO IR object to the real object. */
+
+static bfd_boolean
+get_lto_wrapper (struct plugin_list_entry *plugin)
+{
+ struct stat st;
+ const char *real_name;
+ const char *base_name;
+ size_t length;
+ const char *target_start = NULL;
+ const char *target_end = NULL;
+ size_t target_length = 0;
+ char *gcc_name;
+ char *wrapper_name;
+ char *p;
+ char dir_seperator = '\0';
+ char *resolution_file;
+
+ if (!need_lto_wrapper_p)
+ return FALSE;
+
+ if (plugin->initialized)
+ {
+ if (plugin->lto_wrapper)
+ {
+ resolution_file = make_temp_file (".res");
+ if (resolution_file)
+ {
+ plugin->resolution_file = resolution_file;
+ plugin->resolution_option = concat ("-fresolution=",
+ resolution_file, NULL);
+ return TRUE;
+ }
+ else
+ {
+ /* Something is wrong. Give up. */
+ free (plugin->gcc);
+ free (plugin->lto_wrapper);
+ free (plugin->gcc_env);
+ plugin->gcc = NULL;
+ plugin->gcc_env = NULL;
+ plugin->lto_wrapper = NULL;
+ }
+ }
+
+ return FALSE;
+ }
+
+ plugin->initialized = TRUE;
+
+ /* Check for PREFIX/libexec/gcc/TARGET/VERSION/liblto_plugin.so. */
+ real_name = lrealpath (plugin->plugin_name);
+ base_name = lbasename (real_name);
+
+ /* The directory length in plugin pathname. */
+ length = base_name - real_name;
+
+ /* Skip if there is no PREFIX. */
+ if (!length)
+ return FALSE;
+
+ p = (char *) real_name + length - 1;
+ if (IS_DIR_SEPARATOR (*p))
+ {
+ int level = 0;
+ for (; p != real_name; p--)
+ if (IS_DIR_SEPARATOR (*p))
+ {
+ level++;
+ if (level == 2)
+ target_end = p;
+ else if (level == 3)
+ {
+ target_start = p + 1;
+ target_length = target_end - target_start;
+ }
+ else if (level == 5)
+ {
+ dir_seperator = *p;
+ break;
+ }
+ }
+ }
+
+ /* Skip if there is no TARGET nor PREFIX. */
+ if (!target_length || !dir_seperator)
+ return FALSE;
+
+#ifdef HAVE_EXECUTABLE_SUFFIX
+# define GCC_EXECUTABLE "gcc" EXECUTABLE_SUFFIX
+# define LTO_WRAPPER_EXECUTABLE "lto-wrapper" EXECUTABLE_SUFFIX
+#else
+# define GCC_EXECUTABLE "gcc"
+# define LTO_WRAPPER_EXECUTABLE "lto-wrapper"
+#endif
+ gcc_name = bfd_malloc (length + target_length
+ + sizeof (GCC_EXECUTABLE));
+ if (gcc_name == NULL)
+ return FALSE;
+ memcpy (gcc_name, real_name, length);
+
+ /* Get PREFIX/bin/. */
+ p += gcc_name - real_name;
+ memcpy (p + 1, "bin", 3);
+ p[4] = dir_seperator;
+
+ /* Try PREFIX/bin/TARGET-gcc first. */
+ memcpy (p + 5, target_start, target_length);
+ p[5 + target_length] = '-';
+ memcpy (p + 5 + target_length + 1, GCC_EXECUTABLE,
+ sizeof (GCC_EXECUTABLE));
+ if (stat (gcc_name, &st) != 0 || !S_ISREG (st.st_mode))
+ {
+ /* Then try PREFIX/bin/gcc. */
+ memcpy (p + 5, GCC_EXECUTABLE, sizeof (GCC_EXECUTABLE));
+ if (stat (gcc_name, &st) != 0 || !S_ISREG (st.st_mode))
+ {
+ free (gcc_name);
+ return FALSE;
+ }
+ }
+
+ /* lto-wrapper should be in the same directory with LTO plugin. */
+ wrapper_name = bfd_malloc (length + sizeof (LTO_WRAPPER_EXECUTABLE));
+ if (wrapper_name == NULL)
+ {
+ free (gcc_name);
+ return FALSE;
+ }
+ memcpy (wrapper_name, real_name, length);
+ memcpy (wrapper_name + length, LTO_WRAPPER_EXECUTABLE,
+ sizeof (LTO_WRAPPER_EXECUTABLE));
+ if (stat (wrapper_name, &st) == 0 && S_ISREG (st.st_mode))
+ {
+ resolution_file = make_temp_file (".res");
+ if (resolution_file)
+ {
+ plugin->gcc = gcc_name;
+ plugin->lto_wrapper = wrapper_name;
+ plugin->gcc_env = concat ("COLLECT_GCC=", gcc_name, NULL);
+ plugin->resolution_file = resolution_file;
+ plugin->resolution_option = concat ("-fresolution=",
+ resolution_file, NULL);
+ return TRUE;
+ }
+ }
+
+ free (gcc_name);
+ free (wrapper_name);
+ return FALSE;
+}
+
+/* Set environment variables for GCC LTO wrapper to covert LTO IR
+ object to the real object. */
+
+static int
+setup_lto_wrapper_env (struct plugin_list_entry *plugin)
+{
+ return (putenv (plugin->gcc_env)
+ || putenv ("COLLECT_GCC_OPTIONS="));
+}
+
+static struct plugin_list_entry *plugin_list = NULL;
+static struct plugin_list_entry *current_plugin = NULL;
+
/* 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;
+ current_plugin->claim_file = handler;
+ return LDPS_OK;
+}
+
+/* Register an all-symbols-read handler. */
+
+static enum ld_plugin_status
+register_all_symbols_read (ld_plugin_all_symbols_read_handler handler)
+{
+ current_plugin->all_symbols_read = handler;
+ return LDPS_OK;
+}
+
+/* Register a cleanup handler. */
+
+static enum ld_plugin_status
+register_cleanup (ld_plugin_all_symbols_read_handler handler)
+{
+ current_plugin->cleanup_handler = handler;
+ return LDPS_OK;
+}
+
+/* Get the symbol resolution info for a plugin-claimed input file. */
+
+static enum ld_plugin_status
+get_symbols (const void *handle ATTRIBUTE_UNUSED, int nsyms,
+ struct ld_plugin_symbol *syms)
+{
+ if (syms)
+ {
+ int n;
+ for (n = 0; n < nsyms; n++)
+ {
+ switch (syms[n].def)
+ {
+ default:
+ BFD_ASSERT (0);
+ break;
+ case LDPK_UNDEF:
+ case LDPK_WEAKUNDEF:
+ syms[n].resolution = LDPR_UNDEF;
+ break;
+ case LDPK_DEF:
+ case LDPK_WEAKDEF:
+ case LDPK_COMMON:
+ /* Tell plugin that LTO symbol has references from regular
+ object code. */
+ syms[n].resolution = LDPR_PREVAILING_DEF;
+ break;
+ }
+ }
+ }
+
+ return LDPS_OK;
+}
+
+/* Add a new (real) input file generated by a plugin. */
+
+static enum ld_plugin_status
+add_input_file (const char *pathname)
+{
+ /* Get symbols from the real LTO object. */
+ char **matching;
+ long real_symsize;
+ long real_nsyms;
+ asymbol **real_syms;
+ int lto_nsyms;
+ bfd_boolean lto_symbol_found = FALSE;
+ const struct ld_plugin_symbol *lto_syms;
+ bfd *rbfd;
+ int i, j;
+
+ rbfd = bfd_openr (pathname, NULL);
+ if (!bfd_check_format_matches (rbfd, bfd_object, &matching))
+ BFD_ASSERT (0);
+
+ real_symsize = bfd_get_symtab_upper_bound (rbfd);
+ if (real_symsize < 0)
+ BFD_ASSERT (0);
+
+ real_syms = (asymbol **) bfd_malloc (real_symsize);
+ if (real_syms)
+ {
+ real_nsyms = bfd_canonicalize_symtab (rbfd, real_syms);
+ if (real_nsyms < 0)
+ BFD_ASSERT (0);
+
+ /* NB: LTO plugin may generate more than one real object from one
+ LTO IR object. We use the one which contains LTO symbols. */
+ lto_syms = current_plugin->lto_syms;
+ lto_nsyms = current_plugin->lto_nsyms;
+ for (i = 0; i < lto_nsyms; i++)
+ for (j = 0; j < real_nsyms; j++)
+ if (real_syms[j]->name
+ && strcmp (lto_syms[i].name, real_syms[j]->name) == 0)
+ {
+ lto_symbol_found = TRUE;
+ break;
+ }
+ }
+
+ if (lto_symbol_found)
+ {
+ current_plugin->real_nsyms = real_nsyms;
+ current_plugin->real_syms = real_syms;
+ /* NB: We can't close RBFD which own the real symbol info. */
+ current_plugin->real_bfd = rbfd;
+ }
+ else
+ {
+ bfd_close (rbfd);
+ free (real_syms);
+ }
+
return LDPS_OK;
}
struct plugin_data_struct *plugin_data =
bfd_alloc (abfd, sizeof (plugin_data_struct));
- plugin_data->nsyms = nsyms;
- plugin_data->syms = syms;
+ if (plugin_data)
+ {
+ struct ld_plugin_symbol *sym_info;
+ char *strtab;
+ size_t sym_info_size, name_length;
+ int i;
+
+ memset (plugin_data, 0, sizeof (*plugin_data));
+
+ abfd->tdata.plugin_data = plugin_data;
+
+ /* NB: LTO symbols are owned by LTO plugin. Create a copy so
+ that we can use it in bfd_plugin_canonicalize_symtab. */
+ sym_info_size = nsyms * sizeof (*syms);
+
+ /* Allocate a string table */
+ for (i = 0; i < nsyms; i++)
+ sym_info_size += strlen (syms[i].name) + 1;
+
+ sym_info = bfd_alloc (abfd, sym_info_size);
+ if (sym_info)
+ {
+ /* Copy symbol table. */
+ memcpy (sym_info, syms, nsyms * sizeof (*syms));
+
+ /* Copy symbol names in symbol table. */
+ strtab = (char *) (sym_info + nsyms);
+ for (i = 0; i < nsyms; i++)
+ {
+ name_length = strlen (syms[i].name);
+ memcpy (strtab, syms[i].name, name_length + 1);
+ sym_info[i].name = strtab;
+ strtab += name_length + 1;
+ }
+
+ plugin_data->nsyms = nsyms;
+ plugin_data->syms = sym_info;
+
+ current_plugin->lto_nsyms = nsyms;
+ current_plugin->lto_syms = sym_info;
+ }
+ }
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;
-}
-
int
bfd_plugin_open_input (bfd *ibfd, struct ld_plugin_input_file *file)
{
bfd *iobfd;
iobfd = ibfd;
- if (ibfd->my_archive && !bfd_is_thin_archive (ibfd->my_archive))
- iobfd = ibfd->my_archive;
+ while (iobfd->my_archive
+ && !bfd_is_thin_archive (iobfd->my_archive))
+ iobfd = iobfd->my_archive;
file->name = iobfd->filename;
if (!iobfd->iostream && !bfd_open_file (iobfd))
return 0;
- file->fd = fileno ((FILE *) iobfd->iostream);
+ /* The plugin API expects that the file descriptor won't be closed
+ and reused as done by the bfd file cache. So open it again.
+ dup isn't good enough. plugin IO uses lseek/read while BFD uses
+ fseek/fread. It isn't wise to mix the unistd and stdio calls on
+ the same underlying file descriptor. */
+ file->fd = open (file->name, O_RDONLY | O_BINARY);
+ if (file->fd < 0)
+ return 0;
if (iobfd == ibfd)
{
struct stat stat_buf;
+
if (fstat (file->fd, &stat_buf))
- return 0;
+ {
+ close(file->fd);
+ return 0;
+ }
+
file->offset = 0;
file->filesize = stat_buf.st_size;
}
int claimed = 0;
struct ld_plugin_input_file file;
- if (!bfd_plugin_open_input (abfd, &file))
- return 0;
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 (bfd_plugin_open_input (abfd, &file)
+ && current_plugin->claim_file)
+ {
+ current_plugin->claim_file (&file, &claimed);
+ if (claimed)
+ {
+ if (current_plugin->all_symbols_read)
+ {
+ struct plugin_data_struct *plugin_data
+ = abfd->tdata.plugin_data;
+ if (plugin_data)
+ {
+ /* Get real symbols from LTO wrapper. */
+ current_plugin->all_symbols_read ();
+
+ /* Copy real symbols to plugin_data. */
+ plugin_data->real_bfd = current_plugin->real_bfd;
+ plugin_data->real_nsyms = current_plugin->real_nsyms;
+ plugin_data->real_syms = current_plugin->real_syms;
+
+ /* Clean up LTO plugin. */
+ if (current_plugin->cleanup_handler)
+ current_plugin->cleanup_handler ();
+ }
+ }
+ }
+
+ close (file.fd);
+ }
+
+ if (current_plugin->lto_wrapper)
+ {
+ /* Clean up for LTO wrapper. NB: Resolution file and option
+ have been created regardless if an IR object is claimed or
+ not. */
+ unlink (current_plugin->resolution_file);
+ free (current_plugin->resolution_option);
+ }
+
return claimed;
}
static int
-try_load_plugin (const char *pname, bfd *abfd, int *has_plugin_p)
+try_load_plugin (const char *pname,
+ struct plugin_list_entry *plugin_list_iter,
+ bfd *abfd, bfd_boolean build_list_p)
{
void *plugin_handle;
- struct ld_plugin_tv tv[4];
+ struct ld_plugin_tv tv[12];
int i;
ld_plugin_onload onload;
enum ld_plugin_status status;
+ int result = 0;
+
+ /* NB: Each object is independent. Reuse the previous plugin from
+ the last run will lead to wrong result. */
+ if (current_plugin)
+ memset (current_plugin, 0,
+ offsetof (struct plugin_list_entry, next));
- *has_plugin_p = 0;
+ if (plugin_list_iter)
+ pname = plugin_list_iter->plugin_name;
plugin_handle = dlopen (pname, RTLD_NOW);
if (!plugin_handle)
return 0;
}
+ if (plugin_list_iter == NULL)
+ {
+ size_t length_plugin_name = strlen (pname) + 1;
+ char *plugin_name = bfd_malloc (length_plugin_name);
+ if (plugin_name == NULL)
+ goto short_circuit;
+ plugin_list_iter = bfd_malloc (sizeof *plugin_list_iter);
+ if (plugin_list_iter == NULL)
+ {
+ free (plugin_name);
+ goto short_circuit;
+ }
+ /* Make a copy of PNAME since PNAME from load_plugin () will be
+ freed. */
+ memcpy (plugin_name, pname, length_plugin_name);
+ memset (plugin_list_iter, 0, sizeof (*plugin_list_iter));
+ plugin_list_iter->plugin_name = plugin_name;
+ plugin_list_iter->next = plugin_list;
+ plugin_list = plugin_list_iter;
+ }
+
+ current_plugin = plugin_list_iter;
+ if (build_list_p)
+ goto short_circuit;
+
onload = dlsym (plugin_handle, "onload");
if (!onload)
- goto err;
+ goto short_circuit;
i = 0;
tv[i].tv_tag = LDPT_MESSAGE;
tv[i].tv_tag = LDPT_ADD_SYMBOLS;
tv[i].tv_u.tv_add_symbols = add_symbols;
+ if (get_lto_wrapper (plugin_list_iter))
+ {
+ ++i;
+ tv[i].tv_tag = LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK;
+ tv[i].tv_u.tv_register_all_symbols_read = register_all_symbols_read;
+
+ ++i;
+ tv[i].tv_tag = LDPT_REGISTER_CLEANUP_HOOK;
+ tv[i].tv_u.tv_register_cleanup = register_cleanup;
+
+ ++i;
+ tv[i].tv_tag = LDPT_GET_SYMBOLS;
+ tv[i].tv_u.tv_get_symbols = get_symbols;
+
+ ++i;
+ tv[i].tv_tag = LDPT_GET_SYMBOLS_V2;
+ tv[i].tv_u.tv_get_symbols = get_symbols;
+
+ ++i;
+ tv[i].tv_tag = LDPT_OPTION;
+ tv[i].tv_u.tv_string = plugin_list_iter->lto_wrapper;
+
+ ++i;
+ tv[i].tv_tag = LDPT_OPTION;
+ tv[i].tv_u.tv_string = plugin_list_iter->resolution_option;
+
+ ++i;
+ tv[i].tv_tag = LDPT_LINKER_OUTPUT;
+ tv[i].tv_u.tv_val = LDPO_EXEC;
+
+ ++i;
+ tv[i].tv_tag = LDPT_ADD_INPUT_FILE;
+ tv[i].tv_u.tv_add_input_file = add_input_file;
+ }
+
++i;
tv[i].tv_tag = LDPT_NULL;
tv[i].tv_u.tv_val = 0;
+ /* LTO plugin will call handler hooks to set up plugin handlers. */
status = (*onload)(tv);
if (status != LDPS_OK)
- goto err;
+ goto short_circuit;
- *has_plugin_p = 1;
+ if (current_plugin->lto_wrapper
+ && setup_lto_wrapper_env (current_plugin))
+ goto short_circuit;
abfd->plugin_format = bfd_plugin_no;
- if (!claim_file)
- goto err;
+ if (!current_plugin->claim_file)
+ goto short_circuit;
if (!try_claim (abfd))
- goto err;
+ goto short_circuit;
abfd->plugin_format = bfd_plugin_yes;
+ result = 1;
- return 1;
-
- err:
- return 0;
+ short_circuit:
+ dlclose (plugin_handle);
+ return result;
}
/* There may be plugin libraries in lib/bfd-plugins. */
+static int has_plugin_list = -1;
-static int has_plugin = -1;
-
-static const bfd_target *(*ld_plugin_object_p) (bfd *);
+static bfd_cleanup (*ld_plugin_object_p) (bfd *);
static const char *plugin_name;
bfd_plugin_set_plugin (const char *p)
{
plugin_name = p;
- has_plugin = p != NULL;
}
/* Return TRUE if a plugin library is used. */
bfd_boolean
bfd_plugin_specified_p (void)
{
- return has_plugin > 0;
+ return plugin_list != NULL;
}
/* Return TRUE if ABFD can be claimed by linker LTO plugin. */
/* Register OBJECT_P to be used by bfd_plugin_object_p. */
void
-register_ld_plugin_object_p (const bfd_target *(*object_p) (bfd *))
+register_ld_plugin_object_p (bfd_cleanup (*object_p) (bfd *))
{
ld_plugin_object_p = object_p;
}
+static void
+build_plugin_list (bfd *abfd)
+{
+ /* The intent was to search ${libdir}/bfd-plugins for plugins, but
+ unfortunately the original implementation wasn't precisely that
+ when configuring binutils using --libdir. Search in the proper
+ path first, then the old one for backwards compatibility. */
+ static const char *path[]
+ = { LIBDIR "/bfd-plugins", BINDIR "/../lib/bfd-plugins" };
+ struct stat last_st;
+ unsigned int i;
+
+ if (has_plugin_list >= 0)
+ return;
+
+ /* Try not to search the same dir twice, by looking at st_dev and
+ st_ino for the dir. If we are on a file system that always sets
+ st_ino to zero or the actual st_ino is zero we might waste some
+ time, but that doesn't matter too much. */
+ last_st.st_dev = 0;
+ last_st.st_ino = 0;
+ for (i = 0; i < sizeof (path) / sizeof (path[0]); i++)
+ {
+ char *plugin_dir = make_relative_prefix (plugin_program_name,
+ BINDIR,
+ path[i]);
+ if (plugin_dir)
+ {
+ struct stat st;
+ DIR *d;
+
+ if (stat (plugin_dir, &st) == 0
+ && S_ISDIR (st.st_mode)
+ && !(last_st.st_dev == st.st_dev
+ && last_st.st_ino == st.st_ino
+ && st.st_ino != 0)
+ && (d = opendir (plugin_dir)) != NULL)
+ {
+ struct dirent *ent;
+
+ last_st.st_dev = st.st_dev;
+ last_st.st_ino = st.st_ino;
+ while ((ent = readdir (d)) != NULL)
+ {
+ char *full_name;
+
+ full_name = concat (plugin_dir, "/", ent->d_name, NULL);
+ if (stat (full_name, &st) == 0 && S_ISREG (st.st_mode))
+ try_load_plugin (full_name, NULL, abfd, TRUE);
+ free (full_name);
+ }
+ closedir (d);
+ }
+ free (plugin_dir);
+ }
+ }
+
+ has_plugin_list = plugin_list != NULL;
+}
+
static int
load_plugin (bfd *abfd)
{
- char *plugin_dir;
- char *p;
- DIR *d;
- struct dirent *ent;
- int found = 0;
-
- if (!has_plugin)
- return found;
+ struct plugin_list_entry *plugin_list_iter;
if (plugin_name)
- return try_load_plugin (plugin_name, abfd, &has_plugin);
+ return try_load_plugin (plugin_name, plugin_list, abfd, FALSE);
if (plugin_program_name == NULL)
- return found;
+ 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;
+ build_plugin_list (abfd);
- d = opendir (p);
- if (!d)
- goto out;
+ for (plugin_list_iter = plugin_list;
+ plugin_list_iter;
+ plugin_list_iter = plugin_list_iter->next)
+ if (try_load_plugin (NULL, plugin_list_iter, abfd, FALSE))
+ return 1;
- while ((ent = readdir (d)))
- {
- char *full_name;
- struct stat s;
- int valid_plugin;
-
- 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, abfd, &valid_plugin);
- if (has_plugin <= 0)
- has_plugin = valid_plugin;
- free (full_name);
- if (found)
- break;
- }
-
- out:
- free (p);
- if (d)
- closedir (d);
-
- return found;
+ return 0;
}
-static const bfd_target *
+static bfd_cleanup
bfd_plugin_object_p (bfd *abfd)
{
if (ld_plugin_object_p)
if (abfd->plugin_format == bfd_plugin_unknown && !load_plugin (abfd))
return NULL;
- return abfd->plugin_format == bfd_plugin_yes ? abfd->xvec : NULL;
+ return abfd->plugin_format == bfd_plugin_yes ? _bfd_no_cleanup : NULL;
}
/* Copy any private info we understand from the input bfd
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;
+ static asection fake_section
+ = BFD_FAKE_SECTION (fake_section, NULL, "plug", 0,
+ SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS);
+ static asection fake_common_section
+ = BFD_FAKE_SECTION (fake_common_section, NULL, "plug", 0, SEC_IS_COMMON);
+ int i, j;
+ long real_nsyms;
+ asymbol **real_syms;
+
+ real_syms = plugin_data->real_syms;
+ if (real_syms)
+ real_nsyms = plugin_data->real_nsyms;
+ else
+ real_nsyms = 0;
for (i = 0; i < nsyms; i++)
{
case LDPK_DEF:
case LDPK_WEAKDEF:
s->section = &fake_section;
+ if (real_nsyms)
+ /* Use real LTO symbols if possible. */
+ for (j = 0; j < real_nsyms; j++)
+ if (real_syms[j]->name
+ && strcmp (syms[i].name, real_syms[j]->name) == 0)
+ {
+ s->section = real_syms[j]->section;
+ break;
+ }
break;
default:
BFD_ASSERT (0);
return 0;
}
+static bfd_boolean
+bfd_plugin_close_and_cleanup (bfd *abfd)
+{
+ struct plugin_data_struct *plugin_data;
+
+ if (abfd->format != bfd_archive
+ && (plugin_data = abfd->tdata.plugin_data))
+ {
+ if (plugin_data->real_bfd)
+ bfd_close (plugin_data->real_bfd);
+
+ if (plugin_data->real_syms)
+ free (plugin_data->real_syms);
+ }
+
+ return _bfd_generic_close_and_cleanup (abfd);
+}
+
const bfd_target plugin_vec =
{
"plugin", /* Name. */