Support for more than 64k ELF sections.

include/elf/ChangeLog
	* external.h (Elf_External_Sym_Shndx): Declare.
	* internal.h (struct elf_internal_sym <st_shndx>): Make it an
	unsigned int.
	* common.h (SHN_BAD): Define.

bfd/ChangeLog
	* configure.in: Bump bfd version.
	* configure: Regenerate.
	* elf-bfd.h (elf_size_info <swap_symbol_out>): Add shndx param.
	(bfd_elf32_swap_symbol_in): Likewise.
	(bfd_elf32_swap_symbol_out): Likewise.
	(bfd_elf64_swap_symbol_in): Likewise.
	(bfd_elf64_swap_symbol_out): Likewise.
	(elf_reloc_cookie): Add locsym_shndx field.  Make locsyms a PTR.
	(elf_obj_tdata): Add num_elf_sections, symtab_shndx_hdr and
	symtab_shndx_section.
	(elf_numsections): Define.
	(elf_symtab_shndx): Define.
	* elf.c (setup_group): Use elf_numsections rather than header e_shnum.
	(bfd_elf_find_section): Likewise.
	(bfd_section_from_elf_index): Likewise.
	(bfd_section_from_shdr): Likewise.  Handle SHT_SYMTAB_SHNDX.
	(bfd_section_from_r_symndx): Read symbol shndx extension, and
	translate st_shndx for > SHN_HIRESERVE.
	(assign_section_numbers): Skip reserved sections.  Assign
	symtab_shndx_section and elf_numsections.  Exclude reserved
	sections from e_shnum.  Set up symtab_shndx_hdr.
	(_bfd_elf_compute_section_file_positions): Handle symtab_shndx_hdr.
	(map_sections_to_segments): Don't map eh_frame_hdr unless required.
	(assign_file_positions_except_relocs): Use elf_numsections rather
	than header e_shnum.  Skip reserved sections and symtab_shndx_section.
	(prep_headers): Set name for symtab_shndx_hdr.
	(_bfd_elf_assign_file_positions_for_relocs): Use elf_numsections.
	(_bfd_elf_write_object_contents): Likewise.  Skip reserved sections.
	(_bfd_elf_section_from_bfd_section): Check bfd_{abs,com,und}_section
	first.  Use elf_section_data if available.  Use elf_numsections.
	Start scan at index 1.
	(copy_private_bfd_data ): Comment fixes.
	(MAP_ONESYMTAB): Define above SHN_HIOS.
	(MAP_DYNSYMTAB): Likewise.
	(MAP_STRTAB): Likewise.
	(MAP_SHSTRTAB): Likewise.
	(MAP_SYM_SHNDX): New define.
	(_bfd_elf_copy_private_symbol_data): Handle symtab_shndx_section.
	(swap_out_syms): Swap out SHT_SYMTAB_SHNDX section too.
	* elfcode.h (elf_swap_symbol_in): Add shndx param, and handle shndx
	extension.
	(elf_swap_symbol_out): Likewise.
	(elf_object_p): Set elf_numsections, and use instead of e_shnum.
	Initialialise reserved elf_elfsections to point at shdr[0].  Remove
	redundant bfd_release calls.
	(elf_slurp_symbol_table): Read symbol shndx extension, and use with
	elf_swap_symbol_in.  Translate st_shndx for > SHN_HIRESERVE too.
	* elflink.h (elf_link_is_defined_archive_symbol): Read symbol shndx
	extension, and use with elf_swap_symbol_in.
	(elf_link_record_local_dynamic_symbol): Likewise.
	(elf_link_add_object_symbols): Likewise.  Also translate st_shndx
	for elf sections > SHN_HIRESERVE.
	(NAME(bfd_elf,size_dynamic_sections)): Adjust elf_swap_symbol_out
	call.
	(struct elf_final_link_info): Add locsym_shndx and symshndxbuf.
	(elf_bfd_final_link): Allocate the above, and tidy code allocating
	other buffers.  Use elf_numsections instead of e_shnum.  Adjust
	elf_swap_symbol_out calls.
	(elf_link_output_sym): Swap out symbol shndx extension too.
	(elf_link_flush_output_syms): And flush them to disk.
	(elf_link_output_extsym): Use SHN_BAD.  Adjust elf_swap_symbol_out
	calls.
	(elf_gc_mark): Read symbol shndx extension, and use with
	elf_swap_symbol_in.
	(elf_link_input_bfd): Likewise,  Translate st_shndx for elf sections
	> SHN_HIRESERVE too.  Use SHN_BAD.
	(elf_reloc_symbol_deleted_p): Use symbol shndx extensions with
	elf_swap_symbol_in.  Translate st_shndx > SHN_HIRESERVE too.
	(elf_bfd_discard_info): Read symbol shndx extension.  Don't attempt
	to continue after a bfd error.
	* elf-m10200.c (mn10200_elf_relax_section): Only read local syms.
	Stash them immediately to symtab_hdr->contents rather than later
	in multiple places.  Clean up afterwards.  Read symbol shndx
	extension, and use with swap_symbol_in.  Translate SHN_UNDEF,
	SHN_ABS, SHN_COMMON and elf sections > SHN_HIRESERVE to bfd
	sections too.  Remove dead code.
	(mn10200_elf_relax_delete_bytes): Use symbol shndx extension
	when swapping in symbols.  Tidy code adjusting global syms.
	Don't swap in global syms.
	(mn10200_elf_symbol_address_p): Likewise.  Remove extsyms param.
	(mn10200_elf_get_relocated_section_contents): Read symbol shndx
	extension, and use with swap_symbol_in.  Rename "size" -> "amt"
	to maximize code in common with other files.  Translate st_shndx
	for > SHN_HIRESERVE too.  Remove dead code.
	* elf-m10300.c (mn10300_elf_relax_section): Only read local syms.
	Stash them immediately to symtab_hdr->contents rather than later
	in multiple places.  Clean up afterwards.  Read symbol shndx
	extension, and use with swap_symbol_in.  Remove dead code.
	(mn10300_elf_relax_delete_bytes): As for elf-m10200.c.
	(mn10300_elf_symbol_address_p): Likewise.
	(mn10300_elf_get_relocated_section_contents): Likewise.
	* elf32-h8300.c (elf32_h8_relax_section): As for elf-m10300.c.
	(elf32_h8_relax_delete_bytes): Likewise.
	(elf32_h8_symbol_address_p): Likewise.
	(elf32_h8_get_relocated_section_contents): Likewise.
	* elf32-hppa.c (elf32_hppa_size_stubs): Read symbol shndx
	extension, and use with swap_symbol_in.
	* elf64-hppa.c (elf64_hppa_check_relocs): Likewise.
	* elf32-i370.c (i370_elf_finish_dynamic_sections): Adjust call to
	bfd_elf32_swap_symbol_out.
	* elf32-m32r.c (m32r_elf_get_relocated_section_contents): Translate
	elf sections > SHN_HIRESERVE too.
	* elf32-m68k.c (bfd_m68k_elf32_create_embedded_relocs): Only read
	local syms.  Read symbol shndx extension, and use with swap_symbol_in.
	* elf32-mips.c (_bfd_mips_elf_final_write_processing): Use
	elf_numsections rather than header e_shnum.
	* elf32-sh.c (sh_elf_relax_section): As for elf-m10300.c.
	(sh_elf_relax_delete_bytes): Likewise.
	(sh_elf_get_relocated_section_contents): Likewise.  Only read local
	symbols.
	* elf32-v850.c (v850_elf_symbol_processing): Use an unsigned int to
	hold section index.  Use elf_numsections rather than e_shnum.
	Rename "index" -> "indx" to avoid shadowing warning.
	(v850_elf_add_symbol_hook): Likewise.
	* elf64-alpha.c (elf64_alpha_relax_section): Only read local syms.
	Read symbol shndx extension, and use with swap_symbol_in.
	* elf32-xstormy16.c (xstormy16_elf_relax_section): Likewise.
	Translate SHN_COMMON and elf sections > SHN_HIRESERVE too.
	* elfxx-ia64.c (elfNN_ia64_relax_section): Likewise.
	(elfNN_ia64_aix_add_symbol_hook): Use elf_numsections.

	* elf-m10300.c (mn10300_elf_gc_mark_hook): Remove unnecessary checks
	before calling bfd_section_from_elf_index on local syms.
	* elf32-arm.h (elf32_arm_gc_mark_hook): Likewise.
	* elf32-avr.c (elf32_avr_gc_mark_hook): Likewise.
	* elf32-cris.c (cris_elf_gc_mark_hook): Likewise.
	* elf32-d10v.c (elf32_d10v_gc_mark_hook): Likewise.
	* elf32-fr30.c (fr30_elf_gc_mark_hook): Likewise.
	* elf32-hppa.c (elf32_hppa_gc_mark_hook): Likewise.
	* elf32-i386.c (elf_i386_gc_mark_hook): Likewise.
	* elf32-m32r.c (m32r_elf_gc_mark_hook): Likewise.
	* elf32-m68k.c (elf_m68k_gc_mark_hook): Likewise.
	* elf32-mcore.c (mcore_elf_gc_mark_hook): Likewise.
	* elf32-mips.c (_bfd_mips_elf_gc_mark_hook): Likewise.
	* elf32-openrisc.c (openrisc_elf_gc_mark_hook): Likewise.
	* elf32-ppc.c (ppc_elf_gc_mark_hook): Likewise.
	* elf32-s390.c (elf_s390_gc_mark_hook): Likewise.
	* elf32-sh.c (sh_elf_gc_mark_hook): Likewise.
	* elf32-sparc.c (elf32_sparc_gc_mark_hook): Likewise.
	* elf32-v850.c (v850_elf_gc_mark_hook): Likewise.
	* elf32-xstormy16.c (xstormy16_elf_gc_mark_hook): Likewise.
	* elf64-mips.c (mips_elf64_gc_mark_hook): Likewise.
	* elf64-mmix.c (mmix_elf_gc_mark_hook): Likewise.
	* elf64-ppc.c (ppc64_elf_gc_mark_hook): Likewise.
	* elf64-s390.c (elf_s390_gc_mark_hook): Likewise.
	* elf64-x86-64.c (elf64_x86_64_gc_mark_hook): Likewise.

binutils/ChangeLog
	* readelf.c (symtab_shndx_hdr): New global.
	(SECTION_HEADER_INDEX): Define.
	(SECTION_HEADER_NUM): Define.
	(SECTION_HEADER): Define.
	(GET_ELF_SYMBOLS): Pass two params rather than three.
	(get_32bit_elf_symbols): Take file and section args.  Read and
	use SHT_SYMTAB_SHNDX.
	(get_64bit_elf_symbols): Likewise.
	(dump_relocations): Use SECTION_HEADER to index "section_headers".
	(process_section_headers): Likewise.  Use SECTION_HEADER_NUM too.
	Remember symtab_shdx_hdr.
	(process_program_headers): Scan from index 1 for segment map.
	(slurp_ia64_unwind_table): Use SECTION_HEADER to index
	"section_headers".
	(process_relocs): Likewise.  Also adjust call to GET_ELF_SYMBOLS.
	(process_unwind): Likewise.
	(process_version_sections): Likewise.
	(process_symbol_table): Likewise.
	(display_debug_info): Likewise.
	(process_dynamic_segment): Fake up a symtab section for changed
	GET_ELF_SYMBOLS.
	(get_symbol_index_type): Check SHN_LOOS before SHN_LORESERVE.
	(process_program_headers): Kill signed/unsigned warning.
	(load_debug_str): Likewise.
	(display_debug_info): Likewise.

1 files changed, 42 insertions, 15 deletions

diff --git a/bfd/elf32-xstormy16.c b/bfd/elf32-xstormy16.c
index 5be799e957b..5d3d171eeac 100644
--- a/bfd/elf32-xstormy16.c
+++ b/bfd/elf32-xstormy16.c
@@ -577,32 +577,59 @@ xstormy16_elf_relax_section (dynobj, splt, info, again)
     {
       bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
       Elf_Internal_Shdr *symtab_hdr;
+      Elf_Internal_Shdr *shndx_hdr;
       Elf32_External_Sym *extsyms;
+      Elf_External_Sym_Shndx *shndx_buf;
       unsigned int idx;
 
       if (! local_plt_offsets)
 	continue;
 
       symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+      shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr;
 
       if (symtab_hdr->contents != NULL)
 	extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
       else
 	{
-	  extsyms = (Elf32_External_Sym *) bfd_malloc (symtab_hdr->sh_size);
+	  bfd_size_type amt;
+
+	  amt = symtab_hdr->sh_info;
+	  amt *= sizeof (Elf32_External_Sym);
+	  extsyms = (Elf32_External_Sym *) bfd_malloc (amt);
 	  if (extsyms == NULL)
 	    return false;
 	  if (bfd_seek (ibfd, symtab_hdr->sh_offset, SEEK_SET) != 0
-	      || (bfd_bread (extsyms, symtab_hdr->sh_size, ibfd)
-		  != symtab_hdr->sh_size))
+	      || bfd_bread ((PTR) extsyms, amt, ibfd) != amt)
 	    {
+	    error_ret_free_extsyms:
 	      free (extsyms);
 	      return false;
 	    }
 	}
 
+      shndx_buf = NULL;
+      if (shndx_hdr->sh_size != 0)
+	{
+	  bfd_size_type amt;
+
+	  amt = symtab_hdr->sh_info;
+	  amt *= sizeof (Elf_External_Sym_Shndx);
+	  shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
+	  if (shndx_buf == NULL)
+	    goto error_ret_free_extsyms;
+	  if (bfd_seek (ibfd, shndx_hdr->sh_offset, SEEK_SET) != 0
+	      || bfd_bread ((PTR) shndx_buf, amt, ibfd) != amt)
+	    {
+	      free (shndx_buf);
+	      goto error_ret_free_extsyms;
+	    }
+	  shndx_hdr->contents = (bfd_byte *) shndx_buf;
+	}
+
       for (idx = 0; idx < symtab_hdr->sh_info; ++idx)
 	{
+	  Elf_External_Sym_Shndx *shndx;
 	  Elf_Internal_Sym isym;
 	  asection *tsec;
 	  bfd_vma address;
@@ -610,15 +637,18 @@ xstormy16_elf_relax_section (dynobj, splt, info, again)
 	  if (local_plt_offsets[idx] == (bfd_vma) -1)
 	    continue;
 
-	  bfd_elf32_swap_symbol_in (ibfd, extsyms + idx, &isym);
+	  shndx = shndx_buf;
+	  if (shndx != NULL)
+	    shndx += idx;
+	  bfd_elf32_swap_symbol_in (ibfd, extsyms + idx, shndx, &isym);
 	  if (isym.st_shndx == SHN_UNDEF)
 	    continue;
-	  else if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE)
-	    tsec = bfd_section_from_elf_index (ibfd, isym.st_shndx);
 	  else if (isym.st_shndx == SHN_ABS)
 	    tsec = bfd_abs_section_ptr;
+	  else if (isym.st_shndx == SHN_COMMON)
+	    tsec = bfd_com_section_ptr;
 	  else
-	    continue;
+	    tsec = bfd_section_from_elf_index (ibfd, isym.st_shndx);
 
 	  address = (tsec->output_section->vma
 		     + tsec->output_offset
@@ -631,7 +661,10 @@ xstormy16_elf_relax_section (dynobj, splt, info, again)
 	    }
 	}
 
-      if (symtab_hdr->contents != extsyms)
+      if (shndx_buf != NULL)
+	free (shndx_buf);
+
+      if ((Elf32_External_Sym *) symtab_hdr->contents != extsyms)
         free (extsyms);
     }
 
@@ -1024,13 +1057,7 @@ xstormy16_elf_gc_mark_hook (abfd, info, rel, h, sym)
     }
   else
     {
-      if (!(elf_bad_symtab (abfd)
-	    && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
-	  && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
-		&& sym->st_shndx != SHN_COMMON))
-	{
-	  return bfd_section_from_elf_index (abfd, sym->st_shndx);
-	}
+      return bfd_section_from_elf_index (abfd, sym->st_shndx);
     }
 
   return NULL;