- einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
- return;
- }
-
- if (st.st_dev == global_stat.st_dev
- && st.st_ino == global_stat.st_ino)
- {
- global_found = true;
- return;
- }
-
- /* We issue a warning if it looks like we are including two
- different versions of the same shared library. For example,
- there may be a problem if -lc picks up libc.so.6 but some other
- shared library has a DT_NEEDED entry of libc.so.5. This is a
- hueristic test, and it will only work if the name looks like
- NAME.so.VERSION. FIXME: Depending on file names is error-prone.
- If we really want to issue warnings about mixing version numbers
- of shared libraries, we need to find a better way. */
-
- if (strchr (global_needed->name, '/') != NULL)
- return;
- suffix = strstr (global_needed->name, ".so.");
- if (suffix == NULL)
- return;
- suffix += sizeof ".so." - 1;
-
- soname = bfd_elf_get_dt_soname (s->the_bfd);
- if (soname == NULL)
- soname = s->filename;
-
- f = strrchr (soname, '/');
- if (f != NULL)
- ++f;
- else
- f = soname;
-
- if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0)
- einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
- global_needed->name, global_needed->by, f);
-}
-
-/* On Linux, it's possible to have different versions of the same
- shared library linked against different versions of libc. The
- dynamic linker somehow tags which libc version to use in
- /etc/ld.so.cache, and, based on the libc that it sees in the
- executable, chooses which version of the shared library to use.
-
- We try to do a similar check here by checking whether this shared
- library needs any other shared libraries which may conflict with
- libraries we have already included in the link. If it does, we
- skip it, and try to find another shared library farther on down the
- link path.
-
- This is called via lang_for_each_input_file.
- GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
- which we ar checking. This sets GLOBAL_VERCHECK_FAILED if we find
- a conflicting version. */
-
-static void
-gld${EMULATION_NAME}_vercheck (s)
- lang_input_statement_type *s;
-{
- const char *soname, *f;
- struct bfd_link_needed_list *l;
-
- if (global_vercheck_failed)
- return;
- if (s->the_bfd == NULL
- || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
- return;
-
- soname = bfd_elf_get_dt_soname (s->the_bfd);
- if (soname == NULL)
- soname = bfd_get_filename (s->the_bfd);
-
- f = strrchr (soname, '/');
- if (f != NULL)
- ++f;
- else
- f = soname;
-
- for (l = global_vercheck_needed; l != NULL; l = l->next)
- {
- const char *suffix;
-
- if (strcmp (f, l->name) == 0)
- {
- /* Probably can't happen, but it's an easy check. */
- continue;
- }
-
- if (strchr (l->name, '/') != NULL)
- continue;
-
- suffix = strstr (l->name, ".so.");
- if (suffix == NULL)
- continue;
-
- suffix += sizeof ".so." - 1;
-
- if (strncmp (f, l->name, suffix - l->name) == 0)
- {
- /* Here we know that S is a dynamic object FOO.SO.VER1, and
- the object we are considering needs a dynamic object
- FOO.SO.VER2, and VER1 and VER2 are different. This
- appears to be a version mismatch, so we tell the caller
- to try a different version of this library. */
- global_vercheck_failed = true;
- return;
- }
- }
-}
-
-/* Place an orphan section. We use this to put random SHF_ALLOC
- sections in the right segment. */
-
-struct orphan_save
-{
- lang_output_section_statement_type *os;
- asection **section;
- lang_statement_union_type **stmt;
-};
-
-/*ARGSUSED*/
-static boolean
-gld${EMULATION_NAME}_place_orphan (file, s)
- lang_input_statement_type *file;
- asection *s;
-{
- static struct orphan_save hold_text;
- static struct orphan_save hold_rodata;
- static struct orphan_save hold_data;
- static struct orphan_save hold_bss;
- static struct orphan_save hold_rel;
- static struct orphan_save hold_interp;
- struct orphan_save *place;
- lang_statement_list_type *old;
- lang_statement_list_type add;
- etree_type *address;
- const char *secname, *ps;
- const char *outsecname;
- lang_output_section_statement_type *os;
-
- secname = bfd_get_section_name (s->owner, s);
-
- /* Look through the script to see where to place this section. */
- os = lang_output_section_find (secname);
-
- if (os != NULL
- && os->bfd_section != NULL
- && ((s->flags ^ os->bfd_section->flags) & (SEC_LOAD | SEC_ALLOC)) == 0)
- {
- /* We have already placed a section with this name. */
- wild_doit (&os->children, s, os, file);
- return true;
- }
-
- if (hold_text.os == NULL)
- hold_text.os = lang_output_section_find (".text");
-
- /* If this is a final link, then always put .gnu.warning.SYMBOL
- sections into the .text section to get them out of the way. */
- if (! link_info.shared
- && ! link_info.relocateable
- && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
- && hold_text.os != NULL)
- {
- wild_doit (&hold_text.os->children, s, hold_text.os, file);
- return true;
- }
-
- /* Decide which segment the section should go in based on the
- section name and section flags. We put loadable .note sections
- right after the .interp section, so that the PT_NOTE segment is
- stored right after the program headers where the OS can read it
- in the first page. */
-#define HAVE_SECTION(hold, name) \
-(hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
-
- if (s->flags & SEC_EXCLUDE)
- return false;
- else if ((s->flags & SEC_ALLOC) == 0)
- place = NULL;
- else if ((s->flags & SEC_LOAD) != 0
- && strncmp (secname, ".note", 4) == 0
- && HAVE_SECTION (hold_interp, ".interp"))
- place = &hold_interp;
- else if ((s->flags & SEC_HAS_CONTENTS) == 0
- && HAVE_SECTION (hold_bss, ".bss"))
- place = &hold_bss;
- else if ((s->flags & SEC_READONLY) == 0
- && HAVE_SECTION (hold_data, ".data"))
- place = &hold_data;
- else if (strncmp (secname, ".rel", 4) == 0
- && (hold_rel.os != NULL
- || (hold_rel.os = output_rel_find ()) != NULL))
- place = &hold_rel;
- else if ((s->flags & SEC_CODE) == 0
- && (s->flags & SEC_READONLY) != 0
- && HAVE_SECTION (hold_rodata, ".rodata"))
- place = &hold_rodata;
- else if ((s->flags & SEC_READONLY) != 0
- && hold_text.os != NULL)
- place = &hold_text;
- else
- place = NULL;
-
-#undef HAVE_SECTION
-
- /* Choose a unique name for the section. This will be needed if the
- same section name appears in the input file with different
- loadable or allocateable characteristics. */
- outsecname = secname;
- if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
- {
- unsigned int len;
- char *newname;
- unsigned int i;
-
- len = strlen (outsecname);
- newname = xmalloc (len + 5);
- strcpy (newname, outsecname);
- i = 0;
- do
- {
- sprintf (newname + len, "%d", i);
- ++i;
- }
- while (bfd_get_section_by_name (output_bfd, newname) != NULL);
-
- outsecname = newname;
- }
-
- if (place != NULL)
- {
- /* Start building a list of statements for this section. */
- old = stat_ptr;
- stat_ptr = &add;
- lang_list_init (stat_ptr);
-
- /* If the name of the section is representable in C, then create
- symbols to mark the start and the end of the section. */
- for (ps = outsecname; *ps != '\0'; ps++)
- if (! isalnum ((unsigned char) *ps) && *ps != '_')
- break;
- if (*ps == '\0' && config.build_constructors)
- {
- char *symname;
- etree_type *e_align;
-
- symname = (char *) xmalloc (ps - outsecname + sizeof "__start_");
- sprintf (symname, "__start_%s", outsecname);
- e_align = exp_unop (ALIGN_K,
- exp_intop ((bfd_vma) 1 << s->alignment_power));
- lang_add_assignment (exp_assop ('=', symname, e_align));
- }
- }
-
- if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
- address = exp_intop ((bfd_vma) 0);
- else
- address = NULL;
-
- os = lang_enter_output_section_statement (outsecname, address, 0,
- (bfd_vma) 0,
- (etree_type *) NULL,
- (etree_type *) NULL,
- (etree_type *) NULL);
-
- wild_doit (&os->children, s, os, file);
-
- lang_leave_output_section_statement
- ((bfd_vma) 0, "*default*",
- (struct lang_output_section_phdr_list *) NULL, "*default*");
-
- if (place != NULL)
- {
- asection *snew, **pps;
-
- stat_ptr = &add;
-
- if (*ps == '\0' && config.build_constructors)
- {
- char *symname;
-
- symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
- sprintf (symname, "__stop_%s", outsecname);
- lang_add_assignment (exp_assop ('=', symname,
- exp_nameop (NAME, ".")));
- }
- stat_ptr = old;
-
- snew = os->bfd_section;
- if (place->os->bfd_section != NULL || place->section != NULL)
- {
- /* Shuffle the section to make the output file look neater. */
- if (place->section == NULL)
- {
-#if 0
- /* Finding the end of the list is a little tricky. We
- make a wild stab at it by comparing section flags. */
- flagword first_flags = place->os->bfd_section->flags;
- for (pps = &place->os->bfd_section->next;
- *pps != NULL && (*pps)->flags == first_flags;
- pps = &(*pps)->next)
- ;
- place->section = pps;
-#else
- /* Put orphans after the first section on the list. */
- place->section = &place->os->bfd_section->next;
-#endif
- }
-
- /* Unlink the section. */
- for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
- ;
- *pps = snew->next;
-
- /* Now tack it on to the "place->os" section list. */
- snew->next = *place->section;
- *place->section = snew;
- }
- place->section = &snew->next; /* Save the end of this list. */
-
- if (place->stmt == NULL)
- {
- /* Put the new statement list right at the head. */
- *add.tail = place->os->header.next;
- place->os->header.next = add.head;
- }
- else
- {
- /* Put it after the last orphan statement we added. */
- *add.tail = *place->stmt;
- *place->stmt = add.head;
- }
- place->stmt = add.tail; /* Save the end of this list. */
- }
-
- return true;
-}
-
-/* A variant of lang_output_section_find. */
-static lang_output_section_statement_type *
-output_rel_find ()
-{
- lang_statement_union_type *u;
- lang_output_section_statement_type *lookup;
-
- for (u = lang_output_section_statement.head;
- u != (lang_statement_union_type *) NULL;
- u = lookup->next)
- {
- lookup = &u->output_section_statement;
- if (strncmp (".rel", lookup->name, 4) == 0
- && lookup->bfd_section != NULL
- && (lookup->bfd_section->flags & SEC_ALLOC) != 0)