2004-04-30 H.J. Lu <hongjiu.lu@intel.com>

[deliverable/binutils-gdb.git] / bfd / section.c

diff --git a/bfd/section.c b/bfd/section.c
index 752d03313d8f9558925075fb4aa789c9522e601e..0236f08756c27bc0815eaaaa4b6e594942d35e7f 100644 (file)
--- a/bfd/section.c
+++ b/bfd/section.c
@@ -1,6 +1,6 @@
 /* Object file "section" support for the BFD library.
    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-   2000, 2001, 2002, 2003
+   2000, 2001, 2002, 2003, 2004
    Free Software Foundation, Inc.
    Written by Cygnus Support.
 
@@ -945,13 +945,19 @@ bfd_make_section_anyway (bfd *abfd, const char *name)
   newsect = &sh->section;
   if (newsect->name != NULL)
     {
-      /* We are making a section of the same name.  It can't go in
-        section_htab without generating a unique section name and
-        that would be pointless;  We don't need to traverse the
-        hash table.  */
-      newsect = bfd_zalloc (abfd, sizeof (asection));
-      if (newsect == NULL)
+      /* We are making a section of the same name.  Put it in the
+        section hash table.  Even though we can't find it directly by a
+        hash lookup, we'll be able to find the section by traversing
+        sh->root.next quicker than looking at all the bfd sections.  */
+      struct section_hash_entry *new_sh;
+      new_sh = (struct section_hash_entry *)
+       bfd_section_hash_newfunc (NULL, &abfd->section_htab, name);
+      if (new_sh == NULL)
        return NULL;
+
+      new_sh->root.next = sh->root.next;
+      sh->root.next = &new_sh->root;
+      newsect = &new_sh->section;
     }
 
   newsect->name = name;
@@ -1025,7 +1031,6 @@ DESCRIPTION
 
 */
 
-/*ARGSUSED*/
 bfd_boolean
 bfd_set_section_flags (bfd *abfd ATTRIBUTE_UNUSED,
                       sec_ptr section,
@@ -1074,7 +1079,6 @@ DESCRIPTION
 
 */
 
-/*VARARGS2*/
 void
 bfd_map_over_sections (bfd *abfd,
                       void (*operation) (bfd *, asection *, void *),
@@ -1090,6 +1094,41 @@ bfd_map_over_sections (bfd *abfd,
     abort ();
 }
 
+/*
+FUNCTION
+       bfd_sections_find_if
+
+SYNOPSIS
+       asection *bfd_sections_find_if
+         (bfd *abfd,
+          bfd_boolean (*func) (bfd *abfd, asection *sect, void *obj),
+          void *obj);
+
+DESCRIPTION
+       Call the provided function @var{func} for each section
+       attached to the BFD @var{abfd}, passing @var{obj} as an
+       argument. The function will be called as if by
+
+|      func (abfd, the_section, obj);
+
+       It returns the first section for which @var{func} returns true.
+
+*/
+
+asection *
+bfd_sections_find_if (bfd *abfd,
+                     bfd_boolean (*operation) (bfd *, asection *, void *),
+                     void *user_storage)
+{
+  asection *sect;
+
+  for (sect = abfd->sections; sect != NULL; sect = sect->next)
+    if ((*operation) (abfd, sect, user_storage))
+      break;
+
+  return sect;
+}
+
 /*
 FUNCTION
        bfd_set_section_size
@@ -1351,6 +1390,24 @@ _bfd_strip_section_from_output (struct bfd_link_info *info, asection *s)
   os->flags |= SEC_EXCLUDE;
 }
 
+/*
+FUNCTION
+       bfd_generic_is_group_section
+
+SYNOPSIS
+       bfd_boolean bfd_generic_is_group_section (bfd *, const asection *sec);
+
+DESCRIPTION
+       Returns TRUE if @var{sec} is a member of a group.
+*/
+
+bfd_boolean
+bfd_generic_is_group_section (bfd *abfd ATTRIBUTE_UNUSED,
+                             const asection *sec ATTRIBUTE_UNUSED)
+{
+  return FALSE;
+}
+
 /*
 FUNCTION
        bfd_generic_discard_group