Fri Jan 3 16:58:31 1997 Richard Henderson <rth@tamu.edu>

	elf64-alpha multiple .got rewrite:

	* elf-bfd.h (struct elf_backend_data): Add always_size_sections entry.
	(bfd_elf*_mkobject): Don't define here ...
	* elfxx-target.h: ... but rather here.  Default always_size_sections
	hook to NULL.
	* elf.c (elf_mkobject): Rename to bfd_elf_mkobject, since that was
	what the #defines in elf-bfd.h transmuted it to anyway.

	* section.c: Add SEC_LINKER_CREATED flag.
	* bfd-in2.h: Rebuild.
	* elf32-i386.c (elf_i386_check_relocs): Add SEC_LINKER_CREATED to
	relocation section flags.
	(elf_i386_size_dynamic_sections): Use SEC_LINKER_CREATED instead of
	SEC_IN_MEMORY to recognize generated bits.
	* elf32-m68k.c (elf_m68k_check_relocs, elf_m68k_size_dynamic_sections):
	Likewise.
	* elf32-mips.c (mips_elf_final_link, mips_elf_create_dynamic_sections,
	mips_elf_create_compact_rel_section, mips_elf_create_got_section,
	mips_elf_check_relocs, mips_elf_size_dynamic_sections): Likewise.
	* elf32-ppc.c (ppc_elf_create_linker_section,
	ppc_elf_size_dynamic_sections): Likewise.
	* elf32-sparc.c (elf32_sparc_check_relocs,
	elf32_sparc_size_dynamic_sections): Likewise.
	* elflink.c (_bfd_elf_create_got_section): Add SEC_LINKER_CREATED to
	section flags.
	(_bfd_elf_create_dynamic_sections): Likewise.
	(_bfd_elf_make_linker_section_rela): Likewise.
	* elflink.h (elf_link_create_dynamic_sections): Likewise.
	(bfd_elf,size_dynamic_sections): Call the always_size_sections hook.
	(elf_bfd_final_link): Use SEC_LINKER_CREATED instead of SEC_IN_MEMORY
	to identify generated bits.
	(elf_link_input_bfd): Likewise.

	* elf64-alpha.c: Rewrite everything touching relocations.

1 files changed, 29 insertions, 19 deletions

diff --git a/bfd/elflink.c b/bfd/elflink.c
index 00e840c..4f7facf 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -38,7 +38,8 @@ _bfd_elf_create_got_section (abfd, info)
   if (bfd_get_section_by_name (abfd, ".got") != NULL)
     return true;
 
-  flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+  flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+	   | SEC_LINKER_CREATED);
 
   s = bfd_make_section (abfd, ".got");
   if (s == NULL
@@ -72,6 +73,8 @@ _bfd_elf_create_got_section (abfd, info)
       && ! _bfd_elf_link_record_dynamic_symbol (info, h))
     return false;
 
+  elf_hash_table (info)->hgot = h;
+
   /* The first three global offset table entries are reserved.  */
   s->_raw_size += 3 * 4;
 
@@ -93,7 +96,8 @@ _bfd_elf_create_dynamic_sections (abfd, info)
   /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
      .rel[a].bss sections.  */
 
-  flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+  flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+	   | SEC_LINKER_CREATED);
 
   s = bfd_make_section (abfd, ".plt");
   if (s == NULL
@@ -226,7 +230,6 @@ _bfd_elf_create_linker_section (abfd, info, which, defaults)
   if (!lsect)
     {
       asection *s;
-      static elf_linker_section_t zero_section;
 
       lsect = (elf_linker_section_t *)
 	bfd_alloc (dynobj, sizeof (elf_linker_section_t));
@@ -238,9 +241,9 @@ _bfd_elf_create_linker_section (abfd, info, which, defaults)
 
       /* See if the sections already exist */
       lsect->section = s = bfd_get_section_by_name (dynobj, lsect->name);
-      if (!s)
+      if (!s || (s->flags & defaults->flags) != defaults->flags)
 	{
-	  lsect->section = s = bfd_make_section (dynobj, lsect->name);
+	  lsect->section = s = bfd_make_section_anyway (dynobj, lsect->name);
 
 	  if (s == NULL)
 	    return (elf_linker_section_t *)0;
@@ -284,21 +287,28 @@ _bfd_elf_create_linker_section (abfd, info, which, defaults)
 		   lsect->sym_name,
 		   lsect->name);
 #endif
-	  if (!(_bfd_generic_link_add_one_symbol (info,
-						  abfd,
-						  lsect->sym_name,
-						  BSF_GLOBAL,
-						  s,
-						  ((lsect->hole_size)
-						   ? s->_raw_size - lsect->hole_size + lsect->sym_offset
-						   : lsect->sym_offset),
-						  (const char *) NULL,
-						  false,
-						  get_elf_backend_data (abfd)->collect,
-						  (struct bfd_link_hash_entry **) &h)))
+	  h = (struct elf_link_hash_entry *)
+	    bfd_link_hash_lookup (info->hash, lsect->sym_name, false, false, false);
+
+	  if ((h == NULL || h->root.type == bfd_link_hash_undefined)
+	      && !(_bfd_generic_link_add_one_symbol (info,
+						     abfd,
+						     lsect->sym_name,
+						     BSF_GLOBAL,
+						     s,
+						     ((lsect->hole_size)
+						      ? s->_raw_size - lsect->hole_size + lsect->sym_offset
+						      : lsect->sym_offset),
+						     (const char *) NULL,
+						     false,
+						     get_elf_backend_data (abfd)->collect,
+						     (struct bfd_link_hash_entry **) &h)))
 	    return (elf_linker_section_t *)0;
 
-	  h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_DYNAMIC;
+	  if ((defaults->which != LINKER_SECTION_SDATA)
+	      && (defaults->which != LINKER_SECTION_SDATA2))
+	    h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_DYNAMIC;
+
 	  h->type = STT_OBJECT;
 	  lsect->sym_hash = h;
 
@@ -359,6 +369,7 @@ _bfd_elf_make_linker_section_rela (dynobj, lsect, alignment)
 				       | SEC_LOAD
 				       | SEC_HAS_CONTENTS
 				       | SEC_IN_MEMORY
+				       | SEC_LINKER_CREATED
 				       | SEC_READONLY))
 	  || ! bfd_set_section_alignment (dynobj, lsect->rel_section, alignment))
 	return false;
@@ -366,4 +377,3 @@ _bfd_elf_make_linker_section_rela (dynobj, lsect, alignment)
 
   return true;
 }
-