* elflink.c (_bfd_elf_gc_mark_extra_sections): Remove mark from

	fragmented .debug_line sections associated with unmarked code
	sections.

	* dwarf.c (read_debug_line_header): New function.  Reads in a
	header in a .debug_line section.
	(display_debug_lines_raw): Use new function.  Handle fragmentary
	.debug_line sections.
	(display_debug_lines_decoded): Likewise.
	* readelf.c (process_section_headers): Handle fragmenatry
	.debug_line sections.
	(display_debug_section): Likewise.

	* as.c (Options): Add -gdwarf-sections.
	(parse_args): Likewise.
	* as.h (flag_dwarf_sections): Declare.
	* dwarf2dbg.c (emit_fixed_inc_line_addr): Skip section changes.
	(process_entries): When -gdwarf-sections is enabled generate
	fragmentary .debug_line sections.
	(out_debug_line): Set the section for the .debug_line section end
	symbol.
	* doc/as.texinfo: Document -gdwarf-sections.
	* NEWS: Mention -gdwarf-sections.

	* gas/elf/dwarf2-3.d: Fix expected readelf output.

	* scripttempl/DWARF.sc: Add support for .debug_line.* and
	.debug_line_end.

1 files changed, 6 insertions, 2 deletions

diff --git a/binutils/readelf.c b/binutils/readelf.c
index b7607a0..a71bf94 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -4838,7 +4838,8 @@ process_section_headers (FILE * file)
 	      || (do_debug_info     && const_strneq (name, "info"))
 	      || (do_debug_info     && const_strneq (name, "types"))
 	      || (do_debug_abbrevs  && const_strneq (name, "abbrev"))
-	      || (do_debug_lines    && const_strneq (name, "line"))
+	      || (do_debug_lines    && strcmp (name, "line") == 0)
+	      || (do_debug_lines    && const_strneq (name, "line."))
 	      || (do_debug_pubnames && const_strneq (name, "pubnames"))
 	      || (do_debug_pubtypes && const_strneq (name, "pubtypes"))
 	      || (do_debug_aranges  && const_strneq (name, "aranges"))
@@ -10972,6 +10973,7 @@ display_debug_section (int shndx, Elf_Internal_Shdr * section, FILE * file)
   /* See if we know how to display the contents of this section.  */
   for (i = 0; i < max; i++)
     if (streq (debug_displays[i].section.uncompressed_name, name)
+	|| (i == line && const_strneq (name, ".debug_line."))
         || streq (debug_displays[i].section.compressed_name, name))
       {
 	struct dwarf_section * sec = &debug_displays [i].section;
@@ -10980,7 +10982,9 @@ display_debug_section (int shndx, Elf_Internal_Shdr * section, FILE * file)
 	if (secondary)
 	  free_debug_section ((enum dwarf_section_display_enum) i);
 
-	if (streq (sec->uncompressed_name, name))
+	if (i == line && const_strneq (name, ".debug_line."))
+	  sec->name = name;
+	else if (streq (sec->uncompressed_name, name))
 	  sec->name = sec->uncompressed_name;
 	else
 	  sec->name = sec->compressed_name;