varasm.c (struct in_named_entry): Add declared.

	* varasm.c  (struct in_named_entry): Add declared.
	(named_section_first_declaration): New function.
	(default_elf_asm_named_section): Use it.
	* output.h (named_section_first_declaration): New.

From-SVN: r46108

gcc/ChangeLog

+2001-10-08  Robert Lipe  <robertlipe@usa.net>
+
+	* varasm.c  (struct in_named_entry): Add declared.
+	(named_section_first_declaration): New function.
+	(default_elf_asm_named_section): Use it.
+	* output.h (named_section_first_declaration): New.
+
 2001-10-08  Richard Henderson  <rth@redhat.com>
 
         * i386.md (movsi_xor): Export.

gcc/output.h

@@ -475,6 +475,7 @@ extern void no_asm_to_stream PARAMS ((FILE *));
 extern unsigned int get_named_section_flags PARAMS ((const char *));
 extern bool set_named_section_flags	PARAMS ((const char *, unsigned int));
 extern void named_section_flags		PARAMS ((const char *, unsigned int));
+extern bool named_section_first_declaration PARAMS((const char *));
 
 union tree_node;
 extern unsigned int default_section_type_flags PARAMS ((union tree_node *,

gcc/varasm.c

@@ -216,6 +216,7 @@ struct in_named_entry
 {
   const char *name;
   unsigned int flags;
+  bool declared;
 };
 
 static htab_t in_named_htab;
@@ -340,6 +341,31 @@ get_named_section_flags (section)
   return slot ? (*slot)->flags : 0;
 }
 
+/* Returns true if the section has been declared before.   Sets internal
+   flag on this section in in_named_hash so subsequent calls on this 
+   section will return false. */
+
+bool
+named_section_first_declaration (name)
+     const char *name;
+{
+  struct in_named_entry **slot;
+
+  slot = (struct in_named_entry**)
+    htab_find_slot_with_hash (in_named_htab, name, 
+			      htab_hash_string (name), NO_INSERT);
+  if (! (*slot)->declared)
+    {
+      (*slot)->declared = true;
+      return true;
+    }
+  else 
+    {
+      return false;
+    }
+}
+
+
 /* Record FLAGS for SECTION.  If SECTION was previously recorded with a
    different set of flags, return false.  */
 
@@ -5205,6 +5231,12 @@ default_elf_asm_named_section (name, flags)
   char flagchars[10], *f = flagchars;
   const char *type;
 
+  if (! named_section_first_declaration (name))
+    {
+      fprintf (asm_out_file, "\t.section\t%s\n", name);
+      return;
+    }
+
   if (!(flags & SECTION_DEBUG))
     *f++ = 'a';
   if (flags & SECTION_WRITE)