* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Enable

	absptr -> pcrel optimization for shared libs.
	Only create minimal .eh_frame_hdr if absptr FDE encoding in shared
	library cannot be converted to pcrel.
	(_bfd_elf_eh_frame_section_offset): Return -2 if making absptr
	relative.
	* elf32-i386.c (elf_i386_relocate_section): If
	_bfd_elf_section_offset returned -2, skip, but make sure the
	relocation is installed.
	* elf32-arm.h (elf32_arm_final_link_relocate): Likewise.
	* elf32-cris.c (cris_elf_relocate_section): Likewise.
	* elf32-hppa.c (elf32_hppa_relocate_section): Likewise.
	* elf32-i370.c (i370_elf_relocate_section): Likewise.
	* elf32-m68k.c (elf_m68k_relocate_section): Likewise.
	* elf32-ppc.c (ppc_elf_relocate_section): Likewise.
	* elf32-s390.c (elf_s390_relocate_section): Likewise.
	* elf32-sh.c (sh_elf_relocate_section): Likewise.
	* elf32-sparc.c (elf32_sparc_relocate_section): Likewise.
	* elf64-ppc.c (ppc64_elf_relocate_section): Likewise.
	* elf64-s390.c (elf_s390_relocate_section): Likewise.
	* elf64-sh64.c (sh_elf64_relocate_section): Likewise.
	* elf64-sparc.c	(sparc64_elf_relocate_section): Likewise.
	* elf64-x86-64.c (elf64_x86_64_relocate_section): Likewise.
	* elf64-alpha.c (elf64_alpha_relocate_section): Handle
	_bfd_elf_section_offset returning -2 the same way as -1.
	* elfxx-ia64.c (elfNN_ia64_install_dyn_reloc): Likewise.
	* elf32-mips.c (mips_elf_create_dynamic_relocation): Add FIXME
	and BFD_ASSERT.
	* elf64-mips.c (mips_elf64_create_dynamic_relocation): Likewise.

1 files changed, 15 insertions, 9 deletions

diff --git a/bfd/elf-eh-frame.c b/bfd/elf-eh-frame.c
index b479c00..20cbfb2 100644
--- a/bfd/elf-eh-frame.c
+++ b/bfd/elf-eh-frame.c
@@ -586,16 +586,12 @@ _bfd_elf_discard_section_eh_frame (abfd, info, sec, ehdrsec,
 	    }
 
 	  /* For shared libraries, try to get rid of as many RELATIVE relocs
-	     as possible.
-	     FIXME: For this to work, ELF backends need to perform the
-	     relocation if omitting dynamic relocs, not skip it.  */
-          if (0
-	      && info->shared
+	     as possible.  */
+          if (info->shared
 	      && (cie.fde_encoding & 0xf0) == DW_EH_PE_absptr)
 	    cie.make_relative = 1;
 
-	  if (0
-	      && info->shared
+	  if (info->shared
 	      && (cie.lsda_encoding & 0xf0) == DW_EH_PE_absptr)
 	    cie.make_lsda_relative = 1;
 
@@ -636,6 +632,16 @@ _bfd_elf_discard_section_eh_frame (abfd, info, sec, ehdrsec,
 	    }
 	  else
 	    {
+	      if (info->shared
+		  && (cie.fde_encoding & 0xf0) == DW_EH_PE_absptr
+		  && cie.make_relative == 0)
+		{
+		  /* If shared library uses absolute pointers
+		     which we cannot turn into PC relative,
+		     don't create the binary search table,
+		     since it is affected by runtime relocations.  */
+		  hdr_info->table = false;
+		}
 	      cie_usage_count++;
 	      hdr_info->fde_count++;
 	    }
@@ -856,7 +862,7 @@ _bfd_elf_eh_frame_section_offset (output_bfd, sec, offset)
   if (sec_info->entry[mid].make_relative
       && ! sec_info->entry[mid].cie
       && offset == sec_info->entry[mid].offset + 8)
-    return (bfd_vma) -1;
+    return (bfd_vma) -2;
 
   /* If converting LSDA pointers to DW_EH_PE_pcrel, there will be no need
      for run-time relocation against LSDA field.  */
@@ -865,7 +871,7 @@ _bfd_elf_eh_frame_section_offset (output_bfd, sec, offset)
       && (offset
 	  == (sec_info->entry[mid].offset + 8
 	      + sec_info->entry[mid].lsda_offset)))
-    return (bfd_vma) -1;
+    return (bfd_vma) -2;
 
   return (offset + sec_info->entry[mid].new_offset
 	  - sec_info->entry[mid].offset);