Set dynamic tag VMA and size from dynamic section when possible

Rather than searching the output for a specific named section, it's
better, where possible, to use a linker created dynamic section to set
a dynamic tag's value.  That way ld doesn't depend on the output
section name, making it possibile to map dynamic sections differently.

bfd/
	* elf-m10300.c (_bfd_mn10300_elf_finish_dynamic_sections): Use
	linker dynamic sections in calculating size and address of
	* dynamic tags rather than using output sections.  Remove asserts.
	* elf32-arm.c (elf32_arm_finish_dynamic_sections): Likewise.
	* elf32-cr16.c (_bfd_cr16_elf_finish_dynamic_sections): Likewise.
	* elf32-cris.c (elf_cris_finish_dynamic_sections): Likewise.
	* elf32-i370.c (i370_elf_finish_dynamic_sections): Likewise.
	* elf32-lm32.c (lm32_elf_finish_dynamic_sections): Likewise.
	* elf32-m32r.c (m32r_elf_finish_dynamic_sections): Likewise.
	* elf32-m68k.c (elf_m68k_finish_dynamic_sections): Likewise.
	* elf32-metag.c (elf_metag_finish_dynamic_sections): Likewise.
	* elf32-microblaze.c (microblaze_elf_finish_dynamic_sections): Likewise.
	* elf32-nds32.c (nds32_elf_finish_dynamic_sections): Likewise.
	* elf32-nios2.c (nios2_elf32_finish_dynamic_sections): Likewise.
	* elf32-or1k.c (or1k_elf_finish_dynamic_sections): Likewise.
	* elf32-s390.c (elf_s390_finish_dynamic_sections): Likewise.
	* elf32-score.c (s3_bfd_score_elf_finish_dynamic_sections): Likewise.
	* elf32-score7.c (s7_bfd_score_elf_finish_dynamic_sections): Likewise.
	* elf32-vax.c (elf_vax_finish_dynamic_sections): Likewise.
	* elf32-xtensa.c (elf_xtensa_finish_dynamic_sections): Likewise.
	* elf64-alpha.c (elf64_alpha_finish_dynamic_sections): Likewise.
	* elf64-s390.c (elf_s390_finish_dynamic_sections): Likewise.
	* elf64-sh64.c (sh64_elf64_finish_dynamic_sections): Likewise.
	* elflink.c (bfd_elf_final_link): Likewise.
	* elfxx-mips.c (_bfd_mips_elf_finish_dynamic_sections): Likewise.
	* elfxx-sparc.c (sparc_finish_dyn): Likewise.  Adjust error message.
	* elf32-arc.c (GET_SYMBOL_OR_SECTION): Remove ASSERT arg and
	don't set doit.  Look up dynobj section.
	(elf_arc_finish_dynamic_sections): Adjust GET_SYMBOL_OR_SECTION
	invocation and dynamic tag vma calculation.  Don't test
	boolean var == TRUE.
	* elfnn-aarch64.c (elfNN_aarch64_finish_dynamic_sections): Fix
	DT_JMPREL calc.
ld/
	* testsuite/ld-arm/arm-elf.exp: Adjust for arm-no-rel-plt now passing.
	Use different output file name for static app without .rel.plt.
	* testsuite/ld-arm/arm-no-rel-plt.ld: Align .rel.dyn and .rela.dyn.
	* testsuite/ld-arm/arm-no-rel-plt.out: Delete.
	* testsuite/ld-arm/arm-no-rel-plt.r: New.
	* testsuite/ld-arm/arm-static-app.d: Don't check file name.
	* testsuite/ld-arm/arm-static-app.r: Likewise.

1 files changed, 6 insertions, 7 deletions

diff --git a/bfd/elf32-cris.c b/bfd/elf32-cris.c
index 64dc3ae..4aa1d45 100644
--- a/bfd/elf32-cris.c
+++ b/bfd/elf32-cris.c
@@ -2336,22 +2336,21 @@ elf_cris_finish_dynamic_sections (bfd *output_bfd,
 	      break;
 
 	    case DT_PLTGOT:
-	      s = bfd_get_section_by_name (output_bfd, ".got");
-	      BFD_ASSERT (s != NULL);
-	      dyn.d_un.d_ptr = s->vma;
+	      dyn.d_un.d_ptr = sgot->output_section->vma + sgot->output_offset;
 	      bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
 	      break;
 
 	    case DT_JMPREL:
 	      /* Yes, we *can* have a .plt and no .plt.rela, for instance
 		 if all symbols are found in the .got (not .got.plt).  */
-	      s = bfd_get_section_by_name (output_bfd, ".rela.plt");
-	      dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
+	      s = bfd_get_linker_section (dynobj, ".rela.plt");
+	      dyn.d_un.d_ptr = s != NULL ? (s->output_section->vma
+					    + s->output_offset) : 0;
 	      bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
 	      break;
 
 	    case DT_PLTRELSZ:
-	      s = bfd_get_section_by_name (output_bfd, ".rela.plt");
+	      s = bfd_get_linker_section (dynobj, ".rela.plt");
 	      if (s == NULL)
 		dyn.d_un.d_val = 0;
 	      else
@@ -2367,7 +2366,7 @@ elf_cris_finish_dynamic_sections (bfd *output_bfd,
 		 linker script arranges for .rela.plt to follow all
 		 other relocation sections, we don't have to worry
 		 about changing the DT_RELA entry.  */
-	      s = bfd_get_section_by_name (output_bfd, ".rela.plt");
+	      s = bfd_get_linker_section (dynobj, ".rela.plt");
 	      if (s != NULL)
 		dyn.d_un.d_val -= s->size;
 	      bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);