Reverse copy .ctors/.dtors sections if needed.

bfd/

2011-05-07  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/12730
	* elf.c (_bfd_elf_section_offset): Check SEC_ELF_REVERSE_COPY.

	* elflink.c (elf_link_input_bfd): Reverse copy .ctors/.dtors
	sections if needed.

	* section.c (SEC_ELF_REVERSE_COPY): New.
	* bfd-in2.h: Regenerated.

ld/testsuite/

2011-05-07  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/12730
	* ld-elf/elf.exp (array_tests): Add "pr12730".
	(array_tests_pie): New.
	(array_tests_static): Add -static for "static init array mixed".
	Add "static pr12730".  Run array_tests_pie for Linux.

	* ld-elf/init-mixed.c (ctor1007): Renamed to ...
	(ctor1007a): This.
	(ctor1007b): New.
	(ctors1007): Remove ctor1007.  Add ctor1007b and ctor1007a.
	(dtor1007): Renamed to ...
	(dtor1007a): This.
	(dtor1007b): New.
	(dtors1007): Remove dtor1007.  Add dtor1007b and dtor1007a.
	(ctor65535): Renamed to ...
	(ctor65535a): This.
	(ctor65535b): New.
	(ctors65535): Remove ctor65535.  Add ctor65535b and ctor65535a.
	(dtor65535): Renamed to ...
	(dtor65535a): This.
	(dtor65535b): New.
	(dtors65535): Remove dtor65535.  Add dtor65535b and dtor65535a.

	* ld-elf/pr12730.cc: New.
	* ld-elf/pr12730.out: Likewise.

1 files changed, 6 insertions, 0 deletions

diff --git a/bfd/elf.c b/bfd/elf.c
index b5a1952..6fccf42 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -9379,6 +9379,12 @@ _bfd_elf_section_offset (bfd *abfd,
     case ELF_INFO_TYPE_EH_FRAME:
       return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset);
     default:
+      if ((sec->flags & SEC_ELF_REVERSE_COPY) != 0)
+	{
+	  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+	  bfd_size_type address_size = bed->s->arch_size / 8;
+	  offset = sec->size - offset - address_size;
+	}
       return offset;
     }
 }