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

1 files changed, 32 insertions, 0 deletions

diff --git a/gcc/varasm.c b/gcc/varasm.c
index d2a59d8..cc79f20 100644
--- a/gcc/varasm.c
+++ b/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)