Introduce new section flag: SEC_ELF_OCTETS

All symbols, sizes and relocations in this section are octets instead of
bytes.  Required for DWARF debug sections as DWARF information is
organized in octets, not bytes.

bfd/
	* section.c (struct bfd_section): New flag SEC_ELF_OCTETS.
	* archures.c (bfd_octets_per_byte): New parameter sec.
	If section is not NULL and SEC_ELF_OCTETS is set, one octet es
	returned [ELF targets only].
	* bfd.c (bfd_get_section_limit): Provide section parameter to
	bfd_octets_per_byte.
	* bfd-in2.h: regenerate.
	* binary.c (binary_set_section_contents): Move call to
	bfd_octets_per_byte into section loop. Provide section parameter
	to bfd_octets_per_byte.
	* coff-arm.c (coff_arm_reloc): Provide section parameter
	to bfd_octets_per_byte.
	* coff-i386.c (coff_i386_reloc): likewise.
	* coff-mips.c (mips_reflo_reloc): likewise.
	* coff-x86_64.c (coff_amd64_reloc): likewise.
	* cofflink.c (_bfd_coff_link_input_bfd): likewise.
	(_bfd_coff_reloc_link_order): likewise.
	* elf.c (_bfd_elf_section_offset): likewise.
	(_bfd_elf_make_section_from_shdr): likewise.
	Set SEC_ELF_OCTETS for sections with names .gnu.build.attributes,
	.debug*, .zdebug* and .note.gnu*.
	* elf32-msp430.c (rl78_sym_diff_handler): Provide section parameter
	to bfd_octets_per_byte.
	* elf32-nds.c (nds32_elf_get_relocated_section_contents): likewise.
	* elf32-ppc.c (ppc_elf_addr16_ha_reloc): likewise.
	* elf32-pru.c (pru_elf32_do_ldi32_relocate): likewise.
	* elf32-s12z.c (opru18_reloc): likewise.
	* elf32-sh.c (sh_elf_reloc): likewise.
	* elf32-spu.c (spu_elf_rel9): likewise.
	* elf32-xtensa.c (bfd_elf_xtensa_reloc): likewise
	* elf64-ppc.c (ppc64_elf_brtaken_reloc): likewise.
	(ppc64_elf_addr16_ha_reloc): likewise.
	(ppc64_elf_toc64_reloc): likewise.
	* elflink.c (bfd_elf_final_link): likewise.
	(bfd_elf_perform_complex_relocation): likewise.
	(elf_fixup_link_order): likewise.
	(elf_link_input_bfd): likewise.
	(elf_link_sort_relocs): likewise.
	(elf_reloc_link_order): likewise.
	(resolve_section): likewise.
	* linker.c (_bfd_generic_reloc_link_order): likewise.
	(bfd_generic_define_common_symbol): likewise.
	(default_data_link_order): likewise.
	(default_indirect_link_order): likewise.
	* srec.c (srec_set_section_contents): likewise.
	(srec_write_section): likewise.
	* syms.c (_bfd_stab_section_find_nearest_line): likewise.
	* reloc.c (_bfd_final_link_relocate): likewise.
	(bfd_generic_get_relocated_section_contents): likewise.
	(bfd_install_relocation): likewise.
	For section which have SEC_ELF_OCTETS set, multiply output_base
	and output_offset with bfd_octets_per_byte.
	(bfd_perform_relocation): likewise.
include/
	* coff/ti.h (GET_SCNHDR_SIZE, PUT_SCNHDR_SIZE, GET_SCN_SCNLEN),
	(PUT_SCN_SCNLEN): Adjust bfd_octets_per_byte calls.
binutils/
	* objdump.c (disassemble_data): Provide section parameter to
	bfd_octets_per_byte.
	(dump_section): likewise
	(dump_section_header): likewise. Show SEC_ELF_OCTETS flag if set.
gas/
	* as.h: Define SEC_OCTETS as SEC_ELF_OCTETS if OBJ_ELF.
	* dwarf2dbg.c: (dwarf2_finish): Set section flag SEC_OCTETS for
	.debug_line, .debug_info, .debug_abbrev, .debug_aranges, .debug_str
	and .debug_ranges sections.
	* write.c (maybe_generate_build_notes): Set section flag
	SEC_OCTETS for .gnu.build.attributes section.
	* frags.c (frag_now_fix): Don't divide by OCTETS_PER_BYTE if
	SEC_OCTETS is set.
	* symbols.c (resolve_symbol_value): Likewise.
ld/
	* ldexp.c (fold_name): Provide section parameter to
	bfd_octets_per_byte.
	* ldlang (init_opb): New argument s. Set opb_shift to 0 if
	SEC_ELF_OCTETS for the current section is set.
	(print_input_section): Pass current section to init_opb.
	(print_data_statement,print_reloc_statement,
	print_padding_statement): Likewise.
	(lang_check_section_addresses): Call init_opb for each
	section.
	(lang_size_sections_1,lang_size_sections_1,
	lang_do_assignments_1): Likewise.
	(lang_process): Pass NULL to init_opb.

3 files changed, 33 insertions, 7 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 6498fb0..e969c0f 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,18 @@
+2019-11-25  Christian Eggers  <ceggers@gmx.de>
+
+	* ldexp.c (fold_name): Provide section parameter to
+	bfd_octets_per_byte.
+	* ldlang (init_opb): New argument s. Set opb_shift to 0 if
+	SEC_ELF_OCTETS for the current section is set.
+	(print_input_section): Pass current section to init_opb.
+	(print_data_statement,print_reloc_statement,
+	print_padding_statement): Likewise.
+	(lang_check_section_addresses): Call init_opb for each
+	section.
+	(lang_size_sections_1,lang_size_sections_1,
+	lang_do_assignments_1): Likewise.
+	(lang_process): Pass NULL to init_opb.
+
 2019-11-22  Nick Clifton  <nickc@redhat.com>
 
 	* ld.texi (Output Section Discarding): Add note indicating that
diff --git a/ld/ldexp.c b/ld/ldexp.c
index 23ee5c5..8327a3f 100644
--- a/ld/ldexp.c
+++ b/ld/ldexp.c
@@ -852,7 +852,7 @@ fold_name (etree_type *tree)
 
 	      if (tree->type.node_code == SIZEOF)
 		val = (os->bfd_section->size
-		       / bfd_octets_per_byte (link_info.output_bfd));
+		       / bfd_octets_per_byte (link_info.output_bfd, NULL));
 	      else
 		val = (bfd_vma)1 << os->bfd_section->alignment_power;
 
diff --git a/ld/ldlang.c b/ld/ldlang.c
index eedcb7f..3bcab7a 100644
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -3440,10 +3440,17 @@ ldlang_open_output (lang_statement_union_type *statement)
 }
 
 static void
-init_opb (void)
+init_opb (asection *s)
 {
   unsigned x = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
 					      ldfile_output_machine);
+  if (s != NULL)
+    {
+      if (bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
+	  && (s->flags & SEC_ELF_OCTETS))
+	x = 1;
+    }
+
   opb_shift = 0;
   if (x > 1)
     while ((x & 1) == 0)
@@ -4626,7 +4633,7 @@ print_input_section (asection *i, bfd_boolean is_discarded)
   int len;
   bfd_vma addr;
 
-  init_opb ();
+  init_opb (i);
 
   print_space ();
   minfo ("%s", i->name);
@@ -4707,7 +4714,7 @@ print_data_statement (lang_data_statement_type *data)
   bfd_size_type size;
   const char *name;
 
-  init_opb ();
+  init_opb (data->output_section);
   for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
     print_space ();
 
@@ -4776,7 +4783,7 @@ print_reloc_statement (lang_reloc_statement_type *reloc)
   bfd_vma addr;
   bfd_size_type size;
 
-  init_opb ();
+  init_opb (reloc->output_section);
   for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
     print_space ();
 
@@ -4806,7 +4813,7 @@ print_padding_statement (lang_padding_statement_type *s)
   int len;
   bfd_vma addr;
 
-  init_opb ();
+  init_opb (s->output_section);
   minfo (" *fill*");
 
   len = sizeof " *fill*" - 1;
@@ -5276,6 +5283,7 @@ lang_check_section_addresses (void)
   for (p = NULL, i = 0; i < count; i++)
     {
       s = sections[i].sec;
+      init_opb (s);
       if ((s->flags & SEC_LOAD) != 0)
 	{
 	  s_start = s->lma;
@@ -5326,6 +5334,7 @@ lang_check_section_addresses (void)
       for (p = NULL, i = 0; i < count; i++)
 	{
 	  s = sections[i].sec;
+	  init_opb (s);
 	  s_start = s->vma;
 	  s_end = s_start + TO_ADDR (s->size) - 1;
 
@@ -5450,6 +5459,7 @@ lang_size_sections_1
 	    int section_alignment = 0;
 
 	    os = &s->output_section_statement;
+	    init_opb (os->bfd_section);
 	    if (os->constraint == -1)
 	      break;
 
@@ -6191,6 +6201,7 @@ lang_do_assignments_1 (lang_statement_union_type *s,
 
 	    os = &(s->output_section_statement);
 	    os->after_end = *found_end;
+	    init_opb (os->bfd_section);
 	    if (os->bfd_section != NULL && !os->ignored)
 	      {
 		if ((os->bfd_section->flags & SEC_ALLOC) != 0)
@@ -7622,7 +7633,7 @@ lang_process (void)
 
   /* Open the output file.  */
   lang_for_each_statement (ldlang_open_output);
-  init_opb ();
+  init_opb (NULL);
 
   ldemul_create_output_section_statements ();