fgetws implementation.

[kopensolaris-gnu/glibc.git] / elf / dl-init.c

diff --git a/elf/dl-init.c b/elf/dl-init.c
index 7375c5f..64aa1ce 100644 (file)
--- a/elf/dl-init.c
+++ b/elf/dl-init.c
@@ -1,89 +1,82 @@
 /* Return the next shared object initializer function not yet run.
-Copyright (C) 1995 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+   Copyright (C) 1995, 1996, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library 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
-Library General Public License for more details.
+   The GNU C Library 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
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
 #include <stddef.h>
-#include <link.h>
+#include <elf/ldsodefs.h>
 
 
-Elf32_Addr
-_dl_init_next (void)
+/* Run initializers for MAP and its dependencies, in inverse dependency
+   order (that is, leaf nodes first).  */
+
+ElfW(Addr)
+internal_function
+_dl_init_next (struct r_scope_elem *searchlist)
 {
-  struct link_map *l;
-  Elf32_Addr init;
+  unsigned int i;
+
+  /* The search list for symbol lookup is a flat list in top-down
+     dependency order, so processing that list from back to front gets us
+     breadth-first leaf-to-root order.  */
 
-  Elf32_Addr next_init (struct link_map *l)
+  i = searchlist->r_nlist;
+  while (i-- > 0)
     {
+      struct link_map *l = searchlist->r_list[i];
+
       if (l->l_init_called)
        /* This object is all done.  */
-       return 0;
+       continue;
+
       if (l->l_init_running)
        {
          /* This object's initializer was just running.
             Now mark it as having run, so this object
             will be skipped in the future.  */
-         l->l_init_called = 1;
          l->l_init_running = 0;
-         return 0;
-       }
-
-      if (l->l_info[DT_NEEDED])
-       {
-         /* Find each dependency in order, and see if it
-            needs to run an initializer.  */
-         const char *strtab
-           = ((void *) l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr);
-         const Elf32_Dyn *d;
-         for (d = l->l_ld; d->d_tag != DT_NULL; ++d)
-           if (d->d_tag == DT_NEEDED)
-             {
-               struct link_map *needed
-                 = _dl_map_object (l, strtab + d->d_un.d_val);
-               Elf32_Addr init;
-               --needed->l_opencount;
-               init = next_init (needed); /* Recurse on this dependency.  */
-               if (init != 0)
-                 return init;
-             }
+         l->l_init_called = 1;
+         continue;
        }
 
-      if (l->l_info[DT_INIT] &&
-         !(l->l_name[0] == '\0' && l->l_type == lt_executable))
+      if (l->l_info[DT_INIT]
+         && (l->l_name[0] != '\0' || l->l_type != lt_executable))
        {
          /* Run this object's initializer.  */
          l->l_init_running = 1;
+
+         /* Print a debug message if wanted.  */
+         if (_dl_debug_impcalls)
+           _dl_debug_message (1, "\ncalling init: ",
+                               l->l_name[0] ? l->l_name : _dl_argv[0],
+                               "\n\n", NULL);
+
          return l->l_addr + l->l_info[DT_INIT]->d_un.d_ptr;
        }
 
       /* No initializer for this object.
         Mark it so we will skip it in the future.  */
       l->l_init_called = 1;
-      return 0;
     }
 
-  /* Look for the first initializer not yet called.  */
-  l = _dl_loaded;
-  do
-    {
-      init = next_init (l);
-      l = l->l_next;
-    }
-  while (init == 0 && l);
 
-  return init;
+  /* Notify the debugger all new objects are now ready to go.  */
+  _r_debug.r_state = RT_CONSISTENT;
+  _dl_debug_state ();
+
+  return 0;
 }