From 07890c07361ede1ecd9eddda54936e75aeb7b255 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Tue, 21 Oct 2008 22:55:04 +0000
Subject: [PATCH] 	* ldlang.c (lang_output_section_find_by_flags): Handle
 non-alloc 	sections. 	* emultempl/elf32.em (enum orphan_save_index):
 Add orphan_nonalloc. 	(hold): Likewise. 
 (gld${EMULATION_NAME}_place_orphan): Handle non-alloc orphans.

---
 ld/ChangeLog          |  8 ++++++++
 ld/emultempl/elf32.em | 24 +++++++++++++++++++++---
 ld/ldlang.c           | 30 ++++++++++++++++++++++++------
 3 files changed, 53 insertions(+), 9 deletions(-)

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 59fa810d6a5..7677999b581 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,11 @@
+2008-10-22  Alan Modra  <amodra@bigpond.net.au>
+
+	* ldlang.c (lang_output_section_find_by_flags): Handle non-alloc
+	sections.
+	* emultempl/elf32.em (enum orphan_save_index): Add orphan_nonalloc.
+	(hold): Likewise.
+	(gld${EMULATION_NAME}_place_orphan): Handle non-alloc orphans.
+
 2008-10-22  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>
 
 	* emultempl/armelf.em (PARSE_AND_LIST_OPTIONS): Correct typo in
diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
index e1e7420ee93..bb299d98d15 100644
--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
@@ -1662,7 +1662,10 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
 	0, 0, 0, 0 },
       { ".sdata",
 	SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
-	0, 0, 0, 0 }
+	0, 0, 0, 0 },
+      { 0,
+	SEC_HAS_CONTENTS,
+	0, 0, 0, 0 },
     };
   enum orphan_save_index
     {
@@ -1672,7 +1675,8 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
       orphan_bss,
       orphan_rel,
       orphan_interp,
-      orphan_sdata
+      orphan_sdata,
+      orphan_nonalloc
     };
   static int orphan_init_done = 0;
   struct orphan_save *place;
@@ -1728,7 +1732,9 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
 
   if (!orphan_init_done)
     {
+      lang_output_section_statement_type *lookup;
       struct orphan_save *ho;
+
       for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
 	if (ho->name != NULL)
 	  {
@@ -1736,6 +1742,16 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
 	    if (ho->os != NULL && ho->os->flags == 0)
 	      ho->os->flags = ho->flags;
 	  }
+      lookup = hold[orphan_bss].os;
+      if (lookup == NULL)
+	lookup = &lang_output_section_statement.head->output_section_statement;
+      for (; lookup != NULL; lookup = lookup->next)
+	if ((lookup->bfd_section != NULL
+	     && (lookup->bfd_section->flags & SEC_DEBUGGING) != 0)
+	    || strcmp (lookup->name, ".comment") == 0)
+	  break;
+      hold[orphan_nonalloc].os = lookup ? lookup->prev : NULL;
+      hold[orphan_nonalloc].name = ".comment";
       orphan_init_done = 1;
     }
 
@@ -1758,7 +1774,9 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
      in the first page.  */
 
   place = NULL;
-  if ((s->flags & SEC_ALLOC) == 0)
+  if ((s->flags & (SEC_ALLOC | SEC_DEBUGGING)) == 0)
+    place = &hold[orphan_nonalloc];
+  else if ((s->flags & SEC_ALLOC) == 0)
     ;
   else if ((s->flags & SEC_LOAD) != 0
 	   && ((iself && sh_type == SHT_NOTE)
diff --git a/ld/ldlang.c b/ld/ldlang.c
index 29084490e7b..322ce5bc5d8 100644
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -1363,7 +1363,8 @@ lang_output_section_find_by_flags (const asection *sec,
       return found;
     }
 
-  if (sec->flags & SEC_CODE)
+  if ((sec->flags & SEC_CODE) != 0
+      && (sec->flags & SEC_ALLOC) != 0)
     {
       /* Try for a rw code section.  */
       for (look = first; look; look = look->next)
@@ -1383,7 +1384,8 @@ lang_output_section_find_by_flags (const asection *sec,
 	    found = look;
 	}
     }
-  else if (sec->flags & (SEC_READONLY | SEC_THREAD_LOCAL))
+  else if ((sec->flags & (SEC_READONLY | SEC_THREAD_LOCAL)) != 0
+	   && (sec->flags & SEC_ALLOC) != 0)
     {
       /* .rodata can go after .text, .sdata2 after .rodata.  */
       for (look = first; look; look = look->next)
@@ -1404,7 +1406,8 @@ lang_output_section_find_by_flags (const asection *sec,
 	    found = look;
 	}
     }
-  else if (sec->flags & SEC_SMALL_DATA)
+  else if ((sec->flags & SEC_SMALL_DATA) != 0
+	   && (sec->flags & SEC_ALLOC) != 0)
     {
       /* .sdata goes after .data, .sbss after .sdata.  */
       for (look = first; look; look = look->next)
@@ -1426,7 +1429,8 @@ lang_output_section_find_by_flags (const asection *sec,
 	    found = look;
 	}
     }
-  else if (sec->flags & SEC_HAS_CONTENTS)
+  else if ((sec->flags & SEC_HAS_CONTENTS) != 0
+	   && (sec->flags & SEC_ALLOC) != 0)
     {
       /* .data goes after .rodata.  */
       for (look = first; look; look = look->next)
@@ -1446,9 +1450,9 @@ lang_output_section_find_by_flags (const asection *sec,
 	    found = look;
 	}
     }
-  else
+  else if ((sec->flags & SEC_ALLOC) != 0)
     {
-      /* .bss goes last.  */
+      /* .bss goes after any other alloc section.  */
       for (look = first; look; look = look->next)
 	{
 	  flags = look->flags;
@@ -1465,6 +1469,20 @@ lang_output_section_find_by_flags (const asection *sec,
 	    found = look;
 	}
     }
+  else
+    {
+      /* non-alloc go last.  */
+      for (look = first; look; look = look->next)
+	{
+	  flags = look->flags;
+	  if (look->bfd_section != NULL)
+	    flags = look->bfd_section->flags;
+	  flags ^= sec->flags;
+	  if (!(flags & SEC_DEBUGGING))
+	    found = look;
+	}
+      return found;
+    }
 
   if (found || !match_type)
     return found;
-- 
2.30.2