PARAMS ((void));
static void gld${EMULATION_NAME}_find_so
PARAMS ((lang_input_statement_type *));
+static char *gld${EMULATION_NAME}_search_dir
+ PARAMS ((const char *, const char *, boolean *));
+static void gld${EMULATION_NAME}_after_open PARAMS ((void));
+static void gld${EMULATION_NAME}_check_needed
+ PARAMS ((lang_input_statement_type *));
+static boolean gld${EMULATION_NAME}_search_needed
+ PARAMS ((const char *, const char *));
+static boolean gld${EMULATION_NAME}_try_needed
+ PARAMS ((const char *, const char *));
static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
-static void gld${EMULATION_NAME}_find_statement_assignment
+static void gld${EMULATION_NAME}_find_assignment
PARAMS ((lang_statement_union_type *));
static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
static void gld${EMULATION_NAME}_count_need
lang_input_statement_type *inp;
{
search_dirs_type *search;
- const char *filename;
- const char *dot;
- int force_maj;
- unsigned int len;
- char *alc;
- int max_maj, max_min;
char *found;
- boolean found_static;
+ char *alc;
struct stat st;
if (! inp->search_dirs_flag
ASSERT (strncmp (inp->local_sym_name, "-l", 2) == 0);
- filename = inp->filename;
- force_maj = -1;
- dot = strchr (filename, '.');
- if (dot == NULL)
- len = strlen (filename);
- else
- {
- force_maj = atoi (dot + 1);
- len = dot - filename;
- alc = (char *) xmalloc (len + 1);
- strncpy (alc, filename, len);
- alc[len] = '\0';
- filename = alc;
- }
-
- found = NULL;
- found_static = false;
- max_maj = max_min = 0;
for (search = search_head; search != NULL; search = search->next)
{
- DIR *dir;
- struct dirent *entry;
-
- dir = opendir (search->name);
- if (dir == NULL)
- continue;
-
- while ((entry = readdir (dir)) != NULL)
- {
- int found_maj, found_min;
-
- if (strncmp (entry->d_name, "lib", 3) != 0
- || strncmp (entry->d_name + 3, inp->filename, len) != 0)
- continue;
-
- if (dot == NULL
- && strncmp (entry->d_name + 3 + len, ".a", 2) == 0)
- {
- found_static = true;
- continue;
- }
-
- if (strncmp (entry->d_name + 3 + len, ".so", 3) != 0)
- continue;
-
- /* We've found a .so file. Work out the major and minor
- version numbers. */
- found_maj = 0;
- found_min = 0;
- sscanf (entry->d_name + 3 + len, ".so.%d.%d",
- &found_maj, &found_min);
-
- if (force_maj != -1 && force_maj != found_maj)
- continue;
-
- /* We've found a match for the name we are searching for.
- See if this is the version we should use. If the major
- and minor versions match, we use the last entry in
- alphabetical order; I don't know if this is how SunOS
- distinguishes libc.so.1.8 from libc.so.1.8.1, but it
- ought to suffice. */
- if (found == NULL
- || (found_maj > max_maj)
- || (found_maj == max_maj
- && (found_min > max_min
- || (found_min == max_min
- && strcmp (entry->d_name, found) > 0))))
- {
- if (found != NULL)
- free (found);
- found = (char *) xmalloc (strlen (entry->d_name) + 1);
- strcpy (found, entry->d_name);
- max_maj = found_maj;
- max_min = found_min;
- }
- }
-
- closedir (dir);
+ boolean found_static;
+ found = gld${EMULATION_NAME}_search_dir (search->name, inp->filename,
+ &found_static);
if (found != NULL || found_static)
break;
}
}
}
+/* Search a directory for a .so file. */
+
+static char *
+gld${EMULATION_NAME}_search_dir (dirname, filename, found_static)
+ const char *dirname;
+ const char *filename;
+ boolean *found_static;
+{
+ int force_maj, force_min;
+ const char *dot;
+ unsigned int len;
+ char *alc;
+ char *found;
+ int max_maj, max_min;
+ DIR *dir;
+ struct dirent *entry;
+
+ *found_static = false;
+
+ force_maj = -1;
+ force_min = -1;
+ dot = strchr (filename, '.');
+ if (dot == NULL)
+ {
+ len = strlen (filename);
+ alc = NULL;
+ }
+ else
+ {
+ force_maj = atoi (dot + 1);
+
+ len = dot - filename;
+ alc = (char *) xmalloc (len + 1);
+ strncpy (alc, filename, len);
+ alc[len] = '\0';
+ filename = alc;
+
+ dot = strchr (dot + 1, '.');
+ if (dot != NULL)
+ force_min = atoi (dot + 1);
+ }
+
+ found = NULL;
+ max_maj = max_min = 0;
+
+ dir = opendir (dirname);
+ if (dir == NULL)
+ return NULL;
+
+ while ((entry = readdir (dir)) != NULL)
+ {
+ int found_maj, found_min;
+
+ if (strncmp (entry->d_name, "lib", 3) != 0
+ || strncmp (entry->d_name + 3, filename, len) != 0)
+ continue;
+
+ if (dot == NULL
+ && strcmp (entry->d_name + 3 + len, ".a") == 0)
+ {
+ *found_static = true;
+ continue;
+ }
+
+ if (strncmp (entry->d_name + 3 + len, ".so", 3) != 0)
+ continue;
+
+ /* We've found a .so file. Work out the major and minor
+ version numbers. */
+ found_maj = 0;
+ found_min = 0;
+ sscanf (entry->d_name + 3 + len, ".so.%d.%d",
+ &found_maj, &found_min);
+
+ if ((force_maj != -1 && force_maj != found_maj)
+ || (force_min != -1 && force_min != found_min))
+ continue;
+
+ /* We've found a match for the name we are searching for. See
+ if this is the version we should use. If the major and minor
+ versions match, we use the last entry in alphabetical order;
+ I don't know if this is how SunOS distinguishes libc.so.1.8
+ from libc.so.1.8.1, but it ought to suffice. */
+ if (found == NULL
+ || (found_maj > max_maj)
+ || (found_maj == max_maj
+ && (found_min > max_min
+ || (found_min == max_min
+ && strcmp (entry->d_name, found) > 0))))
+ {
+ if (found != NULL)
+ free (found);
+ found = (char *) xmalloc (strlen (entry->d_name) + 1);
+ strcpy (found, entry->d_name);
+ max_maj = found_maj;
+ max_min = found_min;
+ }
+ }
+
+ closedir (dir);
+
+ if (alc != NULL)
+ free (alc);
+
+ return found;
+}
+
+/* These variables are required to pass information back and forth
+ between after_open and check_needed. */
+
+static struct bfd_link_needed_list *global_needed;
+static boolean global_found;
+
+/* This is called after all the input files have been opened. */
+
+static void
+gld${EMULATION_NAME}_after_open ()
+{
+ struct bfd_link_needed_list *needed, *l;
+
+ /* We only need to worry about this when doing a final link. */
+ if (link_info.relocateable || link_info.shared)
+ return;
+
+ /* Get the list of files which appear in ld_need entries in dynamic
+ objects included in the link. For each such file, we want to
+ track down the corresponding library, and include the symbol
+ table in the link. This is what the runtime dynamic linker will
+ do. Tracking the files down here permits one dynamic object to
+ include another without requiring special action by the person
+ doing the link. Note that the needed list can actually grow
+ while we are stepping through this loop. */
+ needed = bfd_sunos_get_needed_list (output_bfd, &link_info);
+ for (l = needed; l != NULL; l = l->next)
+ {
+ struct bfd_link_needed_list *ll;
+ const char *lname;
+ const char *lib_path;
+ search_dirs_type *search;
+
+ lname = l->name;
+
+ /* If we've already seen this file, skip it. */
+ for (ll = needed; ll != l; ll = ll->next)
+ if (strcmp (ll->name, lname) == 0)
+ break;
+ if (ll != l)
+ continue;
+
+ /* See if this file was included in the link explicitly. */
+ global_needed = l;
+ global_found = false;
+ lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
+ if (global_found)
+ continue;
+
+ if (strncmp (lname, "-l", 2) != 0)
+ {
+ bfd *abfd;
+
+ abfd = bfd_openr (lname, bfd_get_target (output_bfd));
+ if (abfd != NULL)
+ {
+ if (! bfd_check_format (abfd, bfd_object))
+ {
+ (void) bfd_close (abfd);
+ abfd = NULL;
+ }
+ }
+ if (abfd != NULL)
+ {
+ if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
+ {
+ (void) bfd_close (abfd);
+ abfd = NULL;
+ }
+ }
+ if (abfd != NULL)
+ {
+ /* We've found the needed dynamic object. */
+ if (! bfd_link_add_symbols (abfd, &link_info))
+ einfo ("%F%B: could not read symbols: %E\n", abfd);
+ }
+ else
+ {
+ einfo ("%P: warning: %s, needed by %B, not found\n",
+ lname, l->by);
+ }
+
+ continue;
+ }
+
+ lname += 2;
+
+ /* We want to search for the file in the same way that the
+ dynamic linker will search. That means that we want to use
+ rpath_link, rpath or -L, then the environment variable
+ LD_LIBRARY_PATH (native only), then (if rpath was used) the
+ linker script LIB_SEARCH_DIRS. */
+ if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
+ lname))
+ continue;
+ if (command_line.rpath != NULL)
+ {
+ if (gld${EMULATION_NAME}_search_needed (command_line.rpath, lname))
+ continue;
+ }
+ else
+ {
+ for (search = search_head; search != NULL; search = search->next)
+ if (gld${EMULATION_NAME}_try_needed (search->name, lname))
+ break;
+ if (search != NULL)
+ continue;
+ }
+EOF
+if [ "x${host_alias}" = "x${target_alias}" ] ; then
+cat >>e${EMULATION_NAME}.c <<EOF
+ lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
+ if (gld${EMULATION_NAME}_search_needed (lib_path, lname))
+ continue;
+EOF
+fi
+cat >>e${EMULATION_NAME}.c <<EOF
+ if (command_line.rpath != NULL)
+ {
+ for (search = search_head; search != NULL; search = search->next)
+ {
+ if (search->cmdline)
+ continue;
+ if (gld${EMULATION_NAME}_try_needed (search->name, lname))
+ break;
+ }
+ if (search != NULL)
+ continue;
+ }
+
+ einfo ("%P: warning: %s, needed by %B, not found\n",
+ l->name, l->by);
+ }
+}
+
+/* Search for a needed file in a path. */
+
+static boolean
+gld${EMULATION_NAME}_search_needed (path, name)
+ const char *path;
+ const char *name;
+{
+ const char *s;
+
+ if (path == NULL || *path == '\0')
+ return false;
+ while (1)
+ {
+ const char *dir;
+ char *dircopy;
+
+ s = strchr (path, ':');
+ if (s == NULL)
+ {
+ dircopy = NULL;
+ dir = path;
+ }
+ else
+ {
+ dircopy = (char *) xmalloc (s - path + 1);
+ memcpy (dircopy, path, s - path);
+ dircopy[s - path] = '\0';
+ dir = dircopy;
+ }
+
+ if (gld${EMULATION_NAME}_try_needed (dir, name))
+ return true;
+
+ if (dircopy != NULL)
+ free (dircopy);
+
+ if (s == NULL)
+ break;
+ path = s + 1;
+ }
+
+ return false;
+}
+
+/* This function is called for each possible directory for a needed
+ dynamic object. */
+
+static boolean
+gld${EMULATION_NAME}_try_needed (dir, name)
+ const char *dir;
+ const char *name;
+{
+ char *file;
+ char *alc;
+ boolean ignore;
+ bfd *abfd;
+
+ file = gld${EMULATION_NAME}_search_dir (dir, name, &ignore);
+ if (file == NULL)
+ return false;
+
+ alc = (char *) xmalloc (strlen (dir) + strlen (file) + 2);
+ sprintf (alc, "%s/%s", dir, file);
+ free (file);
+ abfd = bfd_openr (alc, bfd_get_target (output_bfd));
+ if (abfd == NULL)
+ return false;
+ if (! bfd_check_format (abfd, bfd_object))
+ {
+ (void) bfd_close (abfd);
+ return false;
+ }
+ if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
+ {
+ (void) bfd_close (abfd);
+ return false;
+ }
+
+ /* We've found the needed dynamic object. */
+
+ /* Add this file into the symbol table. */
+ if (! bfd_link_add_symbols (abfd, &link_info))
+ einfo ("%F%B: could not read symbols: %E\n", abfd);
+
+ return true;
+}
+
+/* See if we have already included a needed object in the link. This
+ does not have to be precise, as it does no harm to include a
+ dynamic object more than once. */
+
+static void
+gld${EMULATION_NAME}_check_needed (s)
+ lang_input_statement_type *s;
+{
+ if (s->filename == NULL)
+ return;
+ if (strncmp (global_needed->name, "-l", 2) != 0)
+ {
+ if (strcmp (s->filename, global_needed->name) == 0)
+ global_found = true;
+ }
+ else
+ {
+ const char *sname, *lname;
+ const char *sdot, *ldot;
+ int lmaj, lmin, smaj, smin;
+
+ lname = global_needed->name + 2;
+
+ sname = strrchr (s->filename, '/');
+ if (sname == NULL)
+ sname = s->filename;
+ else
+ ++sname;
+
+ if (strncmp (sname, "lib", 3) != 0)
+ return;
+ sname += 3;
+
+ ldot = strchr (lname, '.');
+ if (ldot == NULL)
+ ldot = lname + strlen (lname);
+
+ sdot = strstr (sname, ".so.");
+ if (sdot == NULL)
+ return;
+
+ if (sdot - sname != ldot - lname
+ || strncmp (lname, sname, sdot - sname) != 0)
+ return;
+
+ lmaj = lmin = -1;
+ sscanf (ldot, ".%d.%d", &lmaj, &lmin);
+ smaj = smin = -1;
+ sscanf (sdot, ".so.%d.%d", &smaj, &smin);
+ if ((smaj != lmaj && smaj != -1 && lmaj != -1)
+ || (smin != lmin && smin != -1 && lmin != -1))
+ return;
+
+ global_found = true;
+ }
+}
+
+/* We need to use static variables to pass information around the call
+ to lang_for_each_statement. Ick. */
+
+static const char *find_assign;
+static boolean found_assign;
+
/* We need to use static variables to pass information around the call
to lang_for_each_input_file. Ick. */
static void
gld${EMULATION_NAME}_before_allocation ()
{
- struct bfd_link_hash_entry *h = NULL;
+ struct bfd_link_hash_entry *hdyn = NULL;
asection *sneed;
asection *srules;
asection *sdyn;
+ /* The SunOS native linker creates a shared library whenever there
+ are any undefined symbols in a link, unless -e is used. This is
+ pretty weird, but we are compatible. */
+ if (! link_info.shared && ! link_info.relocateable && ! entry_from_cmdline)
+ {
+ struct bfd_link_hash_entry *h;
+
+ for (h = link_info.hash->undefs; h != NULL; h = h->next)
+ {
+ if (h->type == bfd_link_hash_undefined
+ && h->u.undef.abfd != NULL
+ && (h->u.undef.abfd->flags & DYNAMIC) == 0
+ && strcmp (h->root.string, "__DYNAMIC") != 0)
+ {
+ find_assign = h->root.string;
+ found_assign = false;
+ lang_for_each_statement (gld${EMULATION_NAME}_find_assignment);
+ if (! found_assign)
+ {
+ link_info.shared = true;
+ break;
+ }
+ }
+ }
+ }
+
+ if (link_info.shared)
+ {
+ lang_output_section_statement_type *os;
+
+ /* Set the .text section to start at 0x20, not 0x2020. FIXME:
+ This is too magical. */
+ os = lang_output_section_statement_lookup (".text");
+ if (os->addr_tree == NULL)
+ os->addr_tree = exp_intop (0x20);
+ }
+
/* We need to create a __DYNAMIC symbol. We don't do this in the
linker script because we want to set the value to the start of
the dynamic section if there is one, or to zero if there isn't
afterward. */
if (! link_info.relocateable)
{
- h = bfd_link_hash_lookup (link_info.hash, "__DYNAMIC", true, false,
- false);
- if (h == NULL)
+ hdyn = bfd_link_hash_lookup (link_info.hash, "__DYNAMIC", true, false,
+ false);
+ if (hdyn == NULL)
einfo ("%P%F: bfd_link_hash_lookup: %E\n");
if (! bfd_sunos_record_link_assignment (output_bfd, &link_info,
"__DYNAMIC"))
/* If we are going to make any variable assignments, we need to let
the backend linker know about them in case the variables are
referred to by dynamic objects. */
- lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
+ lang_for_each_statement (gld${EMULATION_NAME}_find_assignment);
/* Let the backend linker work out the sizes of any sections
required by dynamic linking. */
if (srules != NULL)
{
- unsigned int size;
- search_dirs_type *search;
-
/* Set up the .rules section. This is just a PATH like string
- of the -L arguments given on the command line. */
- size = 0;
- for (search = search_head; search != NULL; search = search->next)
- if (search->cmdline)
- size += strlen (search->name) + 1;
- srules->_raw_size = size;
- if (size > 0)
+ of the -L arguments given on the command line. We permit the
+ user to specify the directories using the -rpath command line
+ option. */
+ if (command_line.rpath)
+ {
+ srules->_raw_size = strlen (command_line.rpath);
+ srules->contents = (bfd_byte *) command_line.rpath;
+ }
+ else
{
- char *p;
+ unsigned int size;
+ search_dirs_type *search;
- srules->contents = (bfd_byte *) xmalloc (size);
- p = (char *) srules->contents;
- *p = '\0';
+ size = 0;
for (search = search_head; search != NULL; search = search->next)
+ if (search->cmdline)
+ size += strlen (search->name) + 1;
+ srules->_raw_size = size;
+ if (size > 0)
{
- if (search->cmdline)
+ char *p;
+
+ srules->contents = (bfd_byte *) xmalloc (size);
+ p = (char *) srules->contents;
+ *p = '\0';
+ for (search = search_head; search != NULL; search = search->next)
{
- if (p != (char *) srules->contents)
- *p++ = ':';
- strcpy (p, search->name);
- p += strlen (p);
+ if (search->cmdline)
+ {
+ if (p != (char *) srules->contents)
+ *p++ = ':';
+ strcpy (p, search->name);
+ p += strlen (p);
+ }
}
}
}
we are doing one. */
if (! link_info.relocateable)
{
- h->type = bfd_link_hash_defined;
- h->u.def.value = 0;
+ hdyn->type = bfd_link_hash_defined;
+ hdyn->u.def.value = 0;
if (sdyn != NULL)
- h->u.def.section = sdyn;
+ hdyn->u.def.section = sdyn;
else
- h->u.def.section = bfd_abs_section_ptr;
+ hdyn->u.def.section = bfd_abs_section_ptr;
}
}
/* This is called by the before_allocation routine via
- lang_for_each_statement. It locates any assignment statements, and
- tells the backend linker about them, in case they are assignments
- to symbols which are referred to by dynamic objects. */
+ lang_for_each_statement. It does one of two things: if the
+ variable find_assign is set, it sets found_assign if it finds an
+ assignment to that variable; otherwise it tells the backend linker
+ about all assignment statements, in case they are assignments to
+ symbols which are referred to by dynamic objects. */
static void
-gld${EMULATION_NAME}_find_statement_assignment (s)
+gld${EMULATION_NAME}_find_assignment (s)
lang_statement_union_type *s;
{
- if (s->header.type == lang_assignment_statement_enum)
+ if (s->header.type == lang_assignment_statement_enum
+ && (find_assign == NULL || ! found_assign))
gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
}
switch (exp->type.node_class)
{
case etree_assign:
+ if (find_assign != NULL)
+ {
+ if (strcmp (find_assign, exp->assign.dst) == 0)
+ found_assign = true;
+ return;
+ }
+
if (strcmp (exp->assign.dst, ".") != 0)
{
if (! bfd_sunos_record_link_assignment (output_bfd, &link_info,
return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`;
else if (!config.magic_demand_paged)
return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`;
- else if (link_info.shared)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xs`;
else
return `sed "$sc" ldscripts/${EMULATION_NAME}.x`;
}
return "ldscripts/${EMULATION_NAME}.xbn";
else if (!config.magic_demand_paged)
return "ldscripts/${EMULATION_NAME}.xn";
- else if (link_info.shared)
- return "ldscripts/${EMULATION_NAME}.xs";
else
return "ldscripts/${EMULATION_NAME}.x";
}
syslib_default,
hll_default,
after_parse_default,
- after_open_default,
+ gld${EMULATION_NAME}_after_open,
after_allocation_default,
set_output_arch_default,
ldemul_default_target,
projects / external / binutils.git / commitdiff