bfd/

	* elflink.c (elf_bfd_final_link): Don't output STT_SECTION symbol
	into .dynsym if elf_section_data (sec)->dynindx <= 0.
	Adjust counting of last_local.
	(_bfd_elf_link_renumber_dynsyms): Don't assign dynindx to sections
	other than SHT_PROGBITS/SHT_NOBITS and neither for .got/.got.plt/.plt
	created by the linker nor !SHF_ALLOC.

	* elf32-i386.c (elf_i386_finish_dynamic_sections): Point
	DT_PLTGOT to the start of the .got.plt section instead of the
	.got output section.  Set sh_entsize for .got section in addition
	to .got.plt.
	(elf_i386_relocate_section): Don't assume _GLOBAL_OFFSET_TABLE_
	is at sgot->output_section->vma.
	* elf64-x86-64.c (elf64_x86_64_finish_dynamic_sections): Point
	DT_PLTGOT to the start of the .got.plt section instead of the
	.got output section.
	(elf64_x86_64_relocate_section): Don't assume _GLOBAL_OFFSET_TABLE_
	is at sgot->output_section->vma.  Set sh_entsize for .got section
	in addition to .got.plt.
	* elf.c (_bfd_elf_print_private_bfd_data): Handle PT_GNU_RELRO.
	(bfd_section_from_phdr): Likewise.
	(map_sections_to_segments): Likewise.
	(assign_file_positions_for_segments): Likewise.
	(get_program_header_size): Likewise.
	* elflink.c (bfd_elf_size_dynamic_sections): Set
	elf_tdata (output_bfd)->relro from info->relro.
	* elf-bfd.h (struct elf_obj_tdata): Add relro field.
include/
	* bfdlink.h (struct bfd_link_info): Add relro, relro_start and
	relro_end fields.
	* elf/common.h (PT_GNU_EH_FRAME, PT_GNU_STACK): Add comments.
	(PT_GNU_RELRO): Define.
binutils/
	* readelf.c (get_segment_type): Handle PT_GNU_RELRO.
ld/
	* genscripts.sh: Generate -z combreloc -z now -z relro scripts
	for binaries, -shared and -pie.
	* emulparams/elf_i386.sh (SEPARATE_GOTPLT): Set.
	* emulparams/elf_x86_64.sh (SEPARATE_GOTPLT): Set.
	* emulparams/elf32ppc.sh (OTHER_READWRITE_SECTIONS): Rename to...
	(OTHER_RELRO_SECTIONS): ... this.
	* ldlex.l (DATA_SEGMENT_RELRO_END): Add.
	* emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Handle
	-z relro and -z norelro.
	(gld${EMULATION_NAME}_list_options): Add it to usage.
	(gld${EMULATION_NAME}_get_script): Return -z combreloc -z now
	-z relro scripts when appropriate.
	* scripttempl/elf.sc: Unset SEPARATE_GOTPLT if RELRO_NOW is set.
	Create separate .got.plt section if SEPARATE_GOTPLT.
	Move sections which are only written during relocation handling
	to the beginning of RW segment.  If NO_SMALL_DATA, move .got
	before .data.  Add DATA_SEGMENT_RELRO_END directive.
	Include OTHER_RELRO_SECTIONS.
	* ldgram.y (DATA_SEGMENT_RELRO_END): Add.
	* ldexp.c (exp_print_token): Handle DATA_SEGMENT_RELRO_END.
	(fold_unary): Likewise.
	(fold_binary): Handle -z relro.
	* ldexp.h (struct exp_data_seg): Add exp_dataseg_relro_seen and
	exp_dataseg_relro_adjust phases.  Add relro_end field.
	* ldmain.c (main): Initialize link_info.relro to FALSE.
	* ldlang.c (lang_size_sections): Handle -z relro.
ld/testsuite/
	* ld-i386/tlspic.rd: Adjust for section reordering changes
	and removal of unneeded STT_SECTION symbols from .dynsym.
	* ld-i386/tlspic.dd: Likewise.
	* ld-i386/tlspic.sd: Likewise.
	* ld-i386/tlsbin.rd: Likewise.
	* ld-i386/tlsbinpic.s: Likewise.
	* ld-i386/tlsbin.dd: Likewise.
	* ld-i386/tlsbin.sd: Likewise.
	* ld-i386/tlsnopic.rd: Likewise.
	* ld-i386/tlsnopic1.s: Likewise.
	* ld-i386/combreloc.d: Likewise.
	* ld-i386/tlsnopic.dd: Likewise.
	* ld-i386/tlsnopic.sd: Likewise.
	* ld-x86-64/tlspic.rd: Likewise.
	* ld-x86-64/tlspic.dd: Likewise.
	* ld-x86-64/tlsbin.dd: Likewise.
	* ld-x86-64/tlspic.sd: Likewise.
	* ld-x86-64/tlsbin.sd: Likewise.
	* ld-x86-64/tlspic.td: Likewise.
	* ld-x86-64/tlsbin.td: Likewise.
	* ld-x86-64/tlsbin.rd: Likewise.
	* ld-s390/tlspic1.s: Likewise.
	* ld-s390/tlsbinpic.s: Likewise.
	* ld-s390/tlspic.rd: Likewise.
	* ld-s390/tlsbin.rd: Likewise.
	* ld-s390/tlspic.dd: Likewise.
	* ld-s390/tlsbin.dd: Likewise.
	* ld-s390/tlsbin.sd: Likewise.
	* ld-s390/tlsbin.td: Likewise.
	* ld-s390/tlspic.sd: Likewise.
	* ld-s390/tlspic.td: Likewise.
	* ld-s390/tlspic1_64.s: Likewise.
	* ld-s390/tlsbinpic_64.s: Likewise.
	* ld-s390/tlspic_64.rd: Likewise.
	* ld-s390/tlsbin_64.rd: Likewise.
	* ld-s390/tlspic_64.dd: Likewise.
	* ld-s390/tlsbin_64.dd: Likewise.
	* ld-s390/tlspic_64.sd: Likewise.
	* ld-s390/tlspic_64.td: Likewise.
	* ld-s390/tlsbin_64.td: Likewise.
	* ld-s390/tlsbin_64.sd: Likewise.
	* ld-powerpc/tlsexe32.r: Likewise.
	* ld-powerpc/tlsso32.r: Likewise.
	* ld-powerpc/tlsso32.d: Likewise.
	* ld-powerpc/tlsso32.g: Likewise.
	* ld-powerpc/tlsso32.t: Likewise.
	* ld-powerpc/tlsexe.r: Likewise.
	* ld-powerpc/tlsso.r: Likewise.
	* ld-powerpc/tlsso.g: Likewise.
	* ld-powerpc/tlsexetoc.r: Likewise.
	* ld-powerpc/tlstocso.r: Likewise.
	* ld-powerpc/tlstocso.g: Likewise.
	* ld-ia64/tlspic.rd: Likewise.
	* ld-ia64/tlspic.dd: Likewise.
	* ld-ia64/tlspic.sd: Likewise.
	* ld-ia64/tlspic.td: Likewise.
	* ld-ia64/tlsbin.rd: Likewise.
	* ld-ia64/tlsbin.sd: Likewise.
	* ld-ia64/tlsbin.td: Likewise.
	* ld-elfvsb/elfvsb.exp: XFAIL non-PIC load offset tests on s390x.
	* ld-shared/shared.exp: Likewise.

1 files changed, 37 insertions, 2 deletions

diff --git a/ld/ldexp.c b/ld/ldexp.c
index 4d9a8575fb..52e70a6cf3 100644
--- a/ld/ldexp.c
+++ b/ld/ldexp.c
@@ -101,6 +101,7 @@ exp_print_token (token_code_type code, int infix_p)
     { MAX_K, "MAX_K" },
     { REL, "relocatable" },
     { DATA_SEGMENT_ALIGN, "DATA_SEGMENT_ALIGN" },
+    { DATA_SEGMENT_RELRO_END, "DATA_SEGMENT_RELRO_END" },
     { DATA_SEGMENT_END, "DATA_SEGMENT_END" }
   };
   unsigned int idx;
@@ -264,14 +265,36 @@ fold_unary (etree_type *tree,
 	    result.valid_p = FALSE;
 	  break;
 
+	case DATA_SEGMENT_RELRO_END:
+	  if (allocation_done != lang_first_phase_enum
+	      && (exp_data_seg.phase == exp_dataseg_align_seen
+		  || exp_data_seg.phase == exp_dataseg_adjust
+		  || exp_data_seg.phase == exp_dataseg_relro_adjust
+		  || allocation_done != lang_allocating_phase_enum))
+	    {
+	      if (exp_data_seg.phase == exp_dataseg_align_seen
+		  || exp_data_seg.phase == exp_dataseg_relro_adjust)
+		exp_data_seg.relro_end
+		  = result.value + current_section->bfd_section->vma;
+	      if (exp_data_seg.phase == exp_dataseg_align_seen)
+		exp_data_seg.phase = exp_dataseg_relro_seen;
+	      result.value = dot - current_section->bfd_section->vma;
+	    }
+	  else
+	    result.valid_p = FALSE;
+	  break;
+
 	case DATA_SEGMENT_END:
 	  if (allocation_done != lang_first_phase_enum
 	      && current_section == abs_output_section
 	      && (exp_data_seg.phase == exp_dataseg_align_seen
+		  || exp_data_seg.phase == exp_dataseg_relro_seen
 		  || exp_data_seg.phase == exp_dataseg_adjust
+		  || exp_data_seg.phase == exp_dataseg_relro_adjust
 		  || allocation_done != lang_allocating_phase_enum))
 	    {
-	      if (exp_data_seg.phase == exp_dataseg_align_seen)
+	      if (exp_data_seg.phase == exp_dataseg_align_seen
+		  || exp_data_seg.phase == exp_dataseg_relro_seen)
 		{
 		  exp_data_seg.phase = exp_dataseg_end_seen;
 		  exp_data_seg.end = result.value;
@@ -392,12 +415,23 @@ fold_binary (etree_type *tree,
 		  && current_section == abs_output_section
 		  && (exp_data_seg.phase == exp_dataseg_none
 		      || exp_data_seg.phase == exp_dataseg_adjust
+		      || exp_data_seg.phase == exp_dataseg_relro_adjust
 		      || allocation_done != lang_allocating_phase_enum))
 		{
 		  bfd_vma maxpage = result.value;
 
 		  result.value = align_n (dot, maxpage);
-		  if (exp_data_seg.phase != exp_dataseg_adjust)
+		  if (exp_data_seg.phase == exp_dataseg_relro_adjust)
+		    {
+		      /* Attempt to align DATA_SEGMENT_RELRO_END at
+			 a common page boundary.  */
+		      bfd_vma relro;
+
+		      relro = exp_data_seg.relro_end - exp_data_seg.base;
+		      result.value += -relro & (other.value - 1);
+		      exp_data_seg.base = result.value;
+		    }
+		  else if (exp_data_seg.phase != exp_dataseg_adjust)
 		    {
 		      result.value += dot & (maxpage - 1);
 		      if (allocation_done == lang_allocating_phase_enum)
@@ -405,6 +439,7 @@ fold_binary (etree_type *tree,
 			  exp_data_seg.phase = exp_dataseg_align_seen;
 			  exp_data_seg.base = result.value;
 			  exp_data_seg.pagesize = other.value;
+			  exp_data_seg.relro_end = 0;
 			}
 		    }
 		  else if (other.value < maxpage)