Add support for ELF files which contain multiple reloc sections which all target the same section.

	* elf-bfd.h (struct elf_backend_data): Add new fields:
	init_secondary_reloc_section, slurp_secondary_reloc_section,
	write_secondary_reloc_section.
	(_bfd_elf_init_secondary_reloc_section): Prototype.
	(_bfd_elf_slurp_secondary_reloc_section): Prototype.
	(_bfd_elf_write_secondary_reloc_section): Prototype.
	* elf.c ( bfd_section_from_shdr): Invoke the new
	init_secondary_reloc_section backend function, if defined, when a
	second reloc section is encountered.
	(swap_out_syms): Invoke the new symbol_section_index function, if
	defined, when computing the section index of an OS/PROC specific
	symbol.
	(_bfd_elf_init_secondary_reloc_section): New function.
	(_bfd_elf_slurp_secondary_reloc_section): New function.
	(_bfd_elf_write_secondary_reloc_section): New function.
	(_bfd_elf_copy_special_section_fields): New function.
	* elfcode.h (elf_write_relocs): Invoke the new
	write_secondary_relocs function, if defined, in order to emit
	secondary relocs.
	(elf_slurp_reloc_table): Invoke the new slurp_secondary_relocs
	function, if defined, in order to read in secondary relocs.
	* elfxx-target.h (elf_backend_copy_special_section_fields):
	Provide a non-NULL default definition.
	(elf_backend_init_secondary_reloc_section): Likewise.
	(elf_backend_slurp_secondary_reloc_section): Likewise.
	(elf_backend_write_secondary_reloc_section): Likewise.
	(struct elf_backend_data elfNN_bed): Add initialisers for the new
	fields.
        * configure.ac (score_elf32_[bl]e_vec): Add elf64.lo
        * configure: Regenerate.

1 files changed, 17 insertions, 1 deletions

diff --git a/bfd/elfcode.h b/bfd/elfcode.h
index 600abfe..18a6dac 100644
--- a/bfd/elfcode.h
+++ b/bfd/elfcode.h
@@ -869,6 +869,7 @@ elf_object_p (bfd *abfd)
 void
 elf_write_relocs (bfd *abfd, asection *sec, void *data)
 {
+  const struct elf_backend_data * const bed = get_elf_backend_data (abfd);
   bfd_boolean *failedp = (bfd_boolean *) data;
   Elf_Internal_Shdr *rela_hdr;
   bfd_vma addr_offset;
@@ -985,6 +986,13 @@ elf_write_relocs (bfd *abfd, asection *sec, void *data)
       src_rela.r_addend = ptr->addend;
       (*swap_out) (abfd, &src_rela, dst_rela);
     }
+
+  if (bed->write_secondary_relocs != NULL)
+    if (! bed->write_secondary_relocs (abfd, sec))
+      {
+	*failedp = TRUE;
+	return;
+      }
 }
 
 /* Write out the program headers.  */
@@ -1292,7 +1300,10 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic)
 		{
 		  /* This symbol is in a section for which we did not
 		     create a BFD section.  Just use bfd_abs_section,
-		     although it is wrong.  FIXME.  */
+		     although it is wrong.  FIXME.  Note - there is
+		     code in elf.c:swap_out_syms that calls
+		     symbol_section_index() in the elf backend for
+		     cases like this.  */
 		  sym->symbol.section = bfd_abs_section_ptr;
 		}
 	    }
@@ -1517,6 +1528,7 @@ elf_slurp_reloc_table (bfd *abfd,
 		       asymbol **symbols,
 		       bfd_boolean dynamic)
 {
+  const struct elf_backend_data * const bed = get_elf_backend_data (abfd);
   struct bfd_elf_section_data * const d = elf_section_data (asect);
   Elf_Internal_Shdr *rel_hdr;
   Elf_Internal_Shdr *rel_hdr2;
@@ -1584,6 +1596,10 @@ elf_slurp_reloc_table (bfd *abfd,
 					      symbols, dynamic))
     return FALSE;
 
+  if (bed->slurp_secondary_relocs != NULL
+      && ! bed->slurp_secondary_relocs (abfd, asect, symbols))
+    return FALSE;
+
   asect->relocation = relents;
   return TRUE;
 }