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Set dynamic tag VMA and size from dynamic section when possible

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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.
This commit is contained in:
Alan Modra
2016-05-13 11:48:56 +09:30
parent c8e44c6d16
commit 4ade44b727
34 changed files with 200 additions and 186 deletions
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23
bfd/elflink.c
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@@ -11895,18 +11895,18 @@ bfd_elf_final_link (bfd *abfd, struct bfd_link_info *info)
case DT_PREINIT_ARRAYSZ:
name = ".preinit_array";
goto get_size;
goto get_out_size;
case DT_INIT_ARRAYSZ:
name = ".init_array";
goto get_size;
goto get_out_size;
case DT_FINI_ARRAYSZ:
name = ".fini_array";
get_size:
get_out_size:
o = bfd_get_section_by_name (abfd, name);
if (o == NULL)
{
(*_bfd_error_handler)
(_("%B: could not find output section %s"), abfd, name);
(_("could not find section %s"), name);
goto error_return;
}
if (o->size == 0)
@@ -11917,13 +11917,15 @@ bfd_elf_final_link (bfd *abfd, struct bfd_link_info *info)
case DT_PREINIT_ARRAY:
name = ".preinit_array";
goto get_vma;
goto get_out_vma;
case DT_INIT_ARRAY:
name = ".init_array";
goto get_vma;
goto get_out_vma;
case DT_FINI_ARRAY:
name = ".fini_array";
goto get_vma;
get_out_vma:
o = bfd_get_section_by_name (abfd, name);
goto do_vma;
case DT_HASH:
name = ".hash";
@@ -11946,11 +11948,12 @@ bfd_elf_final_link (bfd *abfd, struct bfd_link_info *info)
case DT_VERSYM:
name = ".gnu.version";
get_vma:
o = bfd_get_section_by_name (abfd, name);
o = bfd_get_linker_section (dynobj, name);
do_vma:
if (o == NULL)
{
(*_bfd_error_handler)
(_("%B: could not find output section %s"), abfd, name);
(_("could not find section %s"), name);
goto error_return;
}
if (elf_section_data (o->output_section)->this_hdr.sh_type == SHT_NOTE)
@@ -11960,7 +11963,7 @@ bfd_elf_final_link (bfd *abfd, struct bfd_link_info *info)
bfd_set_error (bfd_error_nonrepresentable_section);
goto error_return;
}
dyn.d_un.d_ptr = o->vma;
dyn.d_un.d_ptr = o->output_section->vma + o->output_offset;
break;
case DT_REL: