bfd/

	* elfxx-mips.c (_bfd_mips_elf_modify_segment_map): Don't extend
	PT_DYNAMIC on GNU/Linux targets.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 304783a..d007593 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,10 @@
 2006-10-20  Richard Sandiford  <richard@codesourcery.com>
 
+       * elfxx-mips.c (_bfd_mips_elf_modify_segment_map): Don't extend
+       PT_DYNAMIC on GNU/Linux targets.
+
+2006-10-20  Richard Sandiford  <richard@codesourcery.com>
+
        * elfxx-mips.c (_bfd_mips_elf_finish_dynamic_sections): Make the
        size of .rel.dyn reflect the value of DT_RELSZ.
 

diff --git a/bfd/elfxx-mips.c b/bfd/elfxx-mips.c
index 34a06c8..5483cf2 100644 (file)
--- a/bfd/elfxx-mips.c
+++ b/bfd/elfxx-mips.c
@@ -9329,8 +9329,18 @@ _bfd_mips_elf_modify_segment_map (bfd *abfd,
              m->p_flags_valid = 1;
            }
        }
-      if (m != NULL
-         && m->count == 1 && strcmp (m->sections[0]->name, ".dynamic") == 0)
+      /* GNU/Linux binaries do not need the extended PT_DYNAMIC section.
+        glibc's dynamic linker has traditionally derived the number of
+        tags from the p_filesz field, and sometimes allocates stack
+        arrays of that size.  An overly-big PT_DYNAMIC segment can
+        be actively harmful in such cases.  Making PT_DYNAMIC contain
+        other sections can also make life hard for the prelinker,
+        which might move one of the other sections to a different
+        PT_LOAD segment.  */
+      if (SGI_COMPAT (abfd)
+         && m != NULL
+         && m->count == 1
+         && strcmp (m->sections[0]->name, ".dynamic") == 0)
        {
          static const char *sec_names[] =
          {