[PATCH] Fix -z combreloc

[Jakub Jelinek <jakub at redhat dot com>]

Hi!

I've just commited the following patch before more people start using -z
combreloc.
RELATIVE records counted in DT_REL{,A}COUNT should be sorted first, not last
(that makes much more sense), ie. ld.so can count that relocs from
DT_REL{,A} up to DT_REL{,A} + (DT_REL{,A}COUNT - 1) * DT_REL{,A}ENT
inclusive are RELATIVE relocs.
I was confused by seeing Solaris 8 /usr/lib/libc.so.1 with DT_RELACOUNT set
and RELATIVE records sorted last, but it seems /usr/lib/sparcv9/libc.so.1
got it already right and for newly created libraries using Sun ld with -z
combreloc RELATIVE records come first even on sparc32.
If you disagree, I can back this patch out, but I wanted to avoid too many
libs with bad DT_REL*COUNT hanging out there.

2001-08-24  Jakub Jelinek  <jakub@redhat.com>

	* elflink.h (elf_link_sort_cmp1): Sort RELATIVE relocs first, not
	last.
	(elf_link_sort_relocs): Adjust accordingly.

--- bfd/elflink.h.jj	Thu Aug 23 17:30:38 2001
+++ bfd/elflink.h	Fri Aug 24 13:01:20 2001
@@ -4300,9 +4300,9 @@ elf_link_sort_cmp1 (A, B)
   relativeb = b->type == reloc_class_relative;
 
   if (relativea < relativeb)
-    return -1;
-  if (relativea > relativeb)
     return 1;
+  if (relativea > relativeb)
+    return -1;
   if (ELF_R_SYM (a->u.rel.r_info) < ELF_R_SYM (b->u.rel.r_info))
     return -1;
   if (ELF_R_SYM (a->u.rel.r_info) > ELF_R_SYM (b->u.rel.r_info))
@@ -4429,14 +4429,15 @@ elf_link_sort_relocs (abfd, info, psec)
       }
 
   qsort (rela, count, sizeof (*rela), elf_link_sort_cmp1);
-  for (i = 0, j = 0; i < count && rela[i].type != reloc_class_relative; i++)
+  for (ret = 0; ret < count && rela[ret].type == reloc_class_relative; ret++)
+    ;
+  for (i = ret, j = ret; i < count; i++)
     {
       if (ELF_R_SYM (rela[i].u.rel.r_info) != ELF_R_SYM (rela[j].u.rel.r_info))
 	j = i;
       rela[i].offset = rela[j].u.rel.r_offset;
     }
-  ret = count - i;
-  qsort (rela, i, sizeof (*rela), elf_link_sort_cmp2);
+  qsort (rela + ret, count - ret, sizeof (*rela), elf_link_sort_cmp2);
   
   for (o = dynobj->sections; o != NULL; o = o->next)
     if ((o->flags & (SEC_HAS_CONTENTS|SEC_LINKER_CREATED))

	Jakub