PATCH: Use "__bss_start" instead of "_edata"

["H. J. Lu" <hjl@lucon.org>]

"_edata" may not be defined due to the elf.sc change. I will check
into this patch to use "__bss_start" instead and document it in
elf.sc.

H.J.
---
bfd/

2005-05-05  H.J. Lu  <hongjiu.lu@intel.com>

	* elflink.c (_bfd_elf_provide_section_bound_symbols): Use
	"__bss_start" instead of "_edata" as fallback.

ld/

2005-05-05  H.J. Lu  <hongjiu.lu@intel.com>

	* scripttempl/elf.sc: Document the usage of __bss_start.

--- binutils/bfd/elflink.c.bss	2005-05-05 07:50:03.000000000 -0700
+++ binutils/bfd/elflink.c	2005-05-05 09:31:17.000000000 -0700
@@ -9911,10 +9911,10 @@ _bfd_elf_provide_section_bound_symbols (
   else
     {
       /* We have to choose those values very carefully.  Some targets,
-	 like alpha, may have relocation overflow with 0. "_edata"
+	 like alpha, may have relocation overflow with 0. "__bss_start"
 	 should be defined in all cases.  */
       struct elf_link_hash_entry *h
-	= elf_link_hash_lookup (elf_hash_table (info), "_edata",
+	= elf_link_hash_lookup (elf_hash_table (info), "__bss_start",
 				FALSE, FALSE, FALSE);
       if (h != NULL && h->root.type == bfd_link_hash_defined)
 	start_val = h->root.u.def.value;
--- binutils/ld/scripttempl/elf.sc.bss	2005-05-05 07:45:30.000000000 -0700
+++ binutils/ld/scripttempl/elf.sc	2005-05-05 09:32:26.000000000 -0700
@@ -376,6 +376,8 @@ cat <<EOF
   ${SDATA}
   ${OTHER_SDATA_SECTIONS}
   ${RELOCATING+${DATA_END_SYMBOLS-_edata = .; PROVIDE (edata = .);}}
+  /* __bss_start is used by _bfd_elf_provide_section_bound_symbols in
+     elflink.c.  */
   ${RELOCATING+__bss_start = .;}
   ${RELOCATING+${OTHER_BSS_SYMBOLS}}
   ${SBSS}