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, 37 insertions, 13 deletions

diff --git a/bfd/elfxx-ia64.c b/bfd/elfxx-ia64.c
index 6abd690..8f43563 100644
--- a/bfd/elfxx-ia64.c
+++ b/bfd/elfxx-ia64.c
@@ -644,6 +644,7 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
     };
 
   Elf_Internal_Shdr *symtab_hdr;
+  Elf_Internal_Shdr *shndx_hdr;
   Elf_Internal_Rela *internal_relocs;
   Elf_Internal_Rela *free_relocs = NULL;
   Elf_Internal_Rela *irel, *irelend;
@@ -651,6 +652,7 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
   bfd_byte *free_contents = NULL;
   ElfNN_External_Sym *extsyms;
   ElfNN_External_Sym *free_extsyms = NULL;
+  Elf_External_Sym_Shndx *shndx_buf = NULL;
   struct elfNN_ia64_link_hash_table *ia64_info;
   struct one_fixup *fixups = NULL;
   boolean changed_contents = false;
@@ -712,18 +714,34 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
 	goto error_return;
     }
 
-  /* Read this BFD's symbols.  */
+  /* Read this BFD's local symbols.  */
   if (symtab_hdr->contents != NULL)
     extsyms = (ElfNN_External_Sym *) symtab_hdr->contents;
   else
     {
-      extsyms = (ElfNN_External_Sym *) bfd_malloc (symtab_hdr->sh_size);
+      bfd_size_type amt;
+
+      amt = symtab_hdr->sh_info * sizeof (ElfNN_External_Sym);
+      extsyms = (ElfNN_External_Sym *) bfd_malloc (amt);
       if (extsyms == NULL)
 	goto error_return;
       free_extsyms = extsyms;
       if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
-	  || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd)
-	      != symtab_hdr->sh_size))
+	  || bfd_bread (extsyms, amt, abfd) != amt)
+	goto error_return;
+    }
+
+  shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
+  if (shndx_hdr->sh_size != 0)
+    {
+      bfd_size_type amt;
+
+      amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx);
+      shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
+      if (shndx_buf == NULL)
+	goto error_return;
+      if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
+	  || bfd_bread (shndx_buf, amt, abfd) != amt)
 	goto error_return;
     }
 
@@ -741,20 +759,21 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
       /* Get the value of the symbol referred to by the reloc.  */
       if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
 	{
+	  ElfNN_External_Sym *esym;
+	  Elf_External_Sym_Shndx *shndx;
+
 	  /* A local symbol.  */
-	  bfd_elfNN_swap_symbol_in (abfd,
-				    extsyms + ELFNN_R_SYM (irel->r_info),
-				    &isym);
+	  esym = extsyms + ELFNN_R_SYM (irel->r_info);
+	  shndx = shndx_buf + (shndx_buf ? ELFNN_R_SYM (irel->r_info) : 0);
+	  bfd_elfNN_swap_symbol_in (abfd, esym, shndx, &isym);
 	  if (isym.st_shndx == SHN_UNDEF)
 	    continue;	/* We can't do anthing with undefined symbols.  */
 	  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 if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE)
-	    tsec = bfd_section_from_elf_index (abfd, isym.st_shndx);
 	  else
-	    continue;	/* who knows.  */
+	    tsec = bfd_section_from_elf_index (abfd, isym.st_shndx);
 
 	  toff = isym.st_value;
 	}
@@ -922,6 +941,9 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
 	}
     }
 
+  if (shndx_buf != NULL)
+    free (shndx_buf);
+
   if (free_extsyms != NULL)
     {
       if (! link_info->keep_memory)
@@ -941,6 +963,8 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
     free (free_relocs);
   if (free_contents != NULL)
     free (free_contents);
+  if (shndx_buf != NULL)
+    free (shndx_buf);
   if (free_extsyms != NULL)
     free (free_extsyms);
   return false;
@@ -1225,15 +1249,15 @@ elfNN_ia64_aix_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
     }
   else if (sym->st_shndx == SHN_LOOS)
     {
-      int i;
+      unsigned int i;
 
       /* SHN_AIX_SYSCALL: Treat this as any other symbol.  The special symbol
 	 is only relevant when compiling code for extended system calls.
 	 Replace the "special" section with .text, if possible.
 	 Note that these symbols are always assumed to be in .text. */
-      for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
+      for (i = 1; i < elf_numsections (abfd); i++)
 	{
-	  asection * sec = bfd_section_from_elf_index (abfd, (unsigned) i);
+	  asection * sec = bfd_section_from_elf_index (abfd, i);
 
 	  if (sec && strcmp (sec->name, ".text") == 0)
 	    {