ELF: Add _bfd_elf_add_dynamic_tags

All ELF backends with shared library support need to add dynamic tags.
Add dt_pltgot_required and dt_jmprel_required to elf_link_hash_table to
indicate that DT_PLTGOT and DT_JMPREL are required dynamic tags.

1. Add _bfd_elf_add_dynamic_tags to add common dynamic tags.
2. Add _bfd_elf_maybe_vxworks_add_dynamic_tags to add common VxWorks
dynamic tags.

	* elf-bfd.h (elf_link_hash_table): Add dt_pltgot_required and
	dt_jmprel_required.
	(_bfd_elf_add_dynamic_tags): New.
	* elf-m10300.c (_bfd_mn10300_elf_size_dynamic_sections): Call
	_bfd_elf_add_dynamic_tags.
	* elf32-arc.c (elf_arc_size_dynamic_sections): Likewise.
	* elf32-bfin.c (elf32_bfinfdpic_size_dynamic_sections): Likewise.
	* elf32-cr16.c (_bfd_cr16_elf_size_dynamic_sections): Likewise.
	* elf32-frv.c (elf32_frvfdpic_size_dynamic_sections): Likewise.
	* elf32-lm32.c (lm32_elf_size_dynamic_sections): Likewise.
	* elf32-m32r.c (m32r_elf_size_dynamic_sections): Likewise.
	* elf32-m68k.c (elf_m68k_size_dynamic_sections): Likewise.
	* elf32-microblaze.c (microblaze_elf_size_dynamic_sections):
	Likewise.
	* elf32-nds32.c (nds32_elf_size_dynamic_sections): Likewise.
	* elf32-nios2.c (nios2_elf32_size_dynamic_sections): Likewise.
	* elf32-or1k.c (or1k_elf_size_dynamic_sections): Likewise.
	* elf32-s390.c (elf_s390_size_dynamic_sections): Likewise.
	* elf32-tilepro.c (tilepro_elf_size_dynamic_sections): Likewise.
	* elf32-vax.c (elf_vax_size_dynamic_sections): Likewise.
	* elf64-alpha.c (elf64_alpha_size_dynamic_sections): Likewise.
	* elf64-s390.c (elf_s390_size_dynamic_sections): Likewise.
	* elfnn-aarch64.c (elfNN_aarch64_size_dynamic_sections):
	Likewise.
	* elfnn-riscv.c (riscv_elf_size_dynamic_sections): Likewise.
	* elfxx-tilegx.c (tilegx_elf_size_dynamic_sections): Likewise.
	* elf32-arm.c (elf32_arm_size_dynamic_sections): Call
	_bfd_elf_maybe_vxworks_add_dynamic_tags.
	* elf32-ppc.c (ppc_elf_size_dynamic_sections): Likewise.
	* elfxx-sparc.c (_bfd_sparc_elf_size_dynamic_sections):
	Likewise.
	* elfxx-x86.c (_bfd_x86_elf_link_hash_table_create): Likewise.
	(_bfd_x86_elf_size_dynamic_sections): Likewise.
	* elfxx-x86.h (elf_x86_link_hash_table): Remove dt_reloc,
	dt_reloc_sz and dt_reloc_ent.
	* elf-vxworks.c (_bfd_elf_maybe_vxworks_add_dynamic_tags): New.
	* elf-vxworks.h (_bfd_elf_maybe_vxworks_add_dynamic_tags):
	Likewise.
	* elf32-hppa.c (elf32_hppa_link_hash_table_create): Set
	etab.dt_pltgot_required.
	(elf32_hppa_size_dynamic_sections): Call
	_bfd_elf_add_dynamic_tags.
	* elf32-metag.c (elf_metag_link_hash_table_create): Set
	etab.dt_pltgot_required.
	(elf_metag_size_dynamic_sections): Call _bfd_elf_add_dynamic_tags.
	* elf32-sh.c (sh_elf_link_hash_table_create): Set
	root.dt_pltgot_required for FDPIC output.
	(sh_elf_size_dynamic_sections): Call
	_bfd_elf_maybe_vxworks_add_dynamic_tags.
	* elf32-xtensa.c (elf_xtensa_link_hash_table_create): Set
	elf.dt_pltgot_required.
	(elf_xtensa_size_dynamic_sections): Call
	_bfd_elf_add_dynamic_tags.
	* elf64-hppa.c (elf64_hppa_hash_table_create): Set
	root.dt_pltgot_required.
	(elf64_hppa_size_dynamic_sections): Call
	_bfd_elf_add_dynamic_tags.
	* elfnn-ia64.c (elfNN_ia64_hash_table_create): Set
	root.dt_pltgot_required.
	(elfNN_ia64_size_dynamic_sections): Set root.dt_jmprel_required
	for rel_pltoff_sec.  Call _bfd_elf_add_dynamic_tags.
	* elflink.c (_bfd_elf_add_dynamic_tags): New.

1 files changed, 2 insertions, 36 deletions

diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c
index eff27f6..8f1e5e1 100644
--- a/bfd/elfnn-aarch64.c
+++ b/bfd/elfnn-aarch64.c
@@ -9101,29 +9101,15 @@ elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
 #define add_dynamic_entry(TAG, VAL)			\
       _bfd_elf_add_dynamic_entry (info, TAG, VAL)
 
-      if (bfd_link_executable (info))
-	{
-	  if (!add_dynamic_entry (DT_DEBUG, 0))
-	    return FALSE;
-	}
+      if (!_bfd_elf_add_dynamic_tags (output_bfd, info, relocs))
+	return FALSE;
 
       if (htab->root.splt->size != 0)
 	{
-	  if (!add_dynamic_entry (DT_PLTGOT, 0)
-	      || !add_dynamic_entry (DT_PLTRELSZ, 0)
-	      || !add_dynamic_entry (DT_PLTREL, DT_RELA)
-	      || !add_dynamic_entry (DT_JMPREL, 0))
-	    return FALSE;
-
 	  if (htab->variant_pcs
 	      && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS, 0))
 	    return FALSE;
 
-	  if (htab->root.tlsdesc_plt
-	      && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
-		  || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
-	    return FALSE;
-
 	  if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC)
 	      && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)
 		  || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)))
@@ -9137,26 +9123,6 @@ elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
 		   && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))
 	    return FALSE;
 	}
-
-      if (relocs)
-	{
-	  if (!add_dynamic_entry (DT_RELA, 0)
-	      || !add_dynamic_entry (DT_RELASZ, 0)
-	      || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
-	    return FALSE;
-
-	  /* If any dynamic relocs apply to a read-only section,
-	     then we need a DT_TEXTREL entry.  */
-	  if ((info->flags & DF_TEXTREL) == 0)
-	    elf_link_hash_traverse (&htab->root,
-				    _bfd_elf_maybe_set_textrel, info);
-
-	  if ((info->flags & DF_TEXTREL) != 0)
-	    {
-	      if (!add_dynamic_entry (DT_TEXTREL, 0))
-		return FALSE;
-	    }
-	}
     }
 #undef add_dynamic_entry