Gate the displaying of non-debug sections in separate debuginfo files.

	PR 27478
	* objdump.c (process_links): New variable.
	(usage): Add --process-links.
	(long_options): Likewise.
	(dump_bfd): Stop processing once the bfd has been loaded unless
	this is the main file or process_links has been enabled.
	(main): Handle the process-links option.
	* readelf.c (process_links): New variable.
	(struct filedata): Add is_separate field.
	(options): Add --process-links.
	(usage): Likewise.
	(parse_args): Likewise.
	(process_file_header): Include the filename when dumping
	information for separate debuginfo files.
	(process_program_headers): Likewise.
	(process_section_headers): Likewise.
	(process_section_groups): Likewise.
	(process_relocs): Likewise.
	(process_dynamic_section): Likewise.
	(process_version_sections): Likewise.
	(display_lto_symtab): Likewise.
	(process_symbol_table): Likewise.
	(process_syminfo): Likewise.
	(initialise_dumps_by_name): Likewise.
	(process_section_contents): Likewise.
	(process_notes_at): Likewise.
	(process_notes): Likewise.
	(open_file): Add is_separate parameter.  Use to initialise the
	is_separate field in the filedata structure.
	(open_deug): Update call to open_file.
	(process_object): Add processing of the contents of separate
	debuginfo files, gated by the process_links variable.
	(process_archive): Update call to open_file.
	(process_file): Initialise the is_separate field in the filedata
	structure.
	* dwarf.c (load_separate_debug_info_file): Only report the
	loading of a separate file if debug links are being dumped.
	* objcopy.c (keep_section_symbols): New variable.
	(enum command_line_switch): Add OPTION_KEEP_SYMBOLS.
	(strip_options): Add keep-section-symbols.
	(copy_options): Likewise.
	(copy_usage): Likewise.
	(strip_usage): Likewise.
	(copy_object): Keep section symbols if requested by command line
	option.
	(strip_main): Handle --keep-section-symbols.
	(copy_main): Likewise.
	* doc/binutils.texi: Document the new options.
	* NEWS: Mention the new features.
	* testsuite/binutils-all/compress.exp (test_gnu_debuglink):
	Update options passed to objdump.  Use diff rather than cmp to
	compare the dumped data.
	* testsuite/binutils-all/objdump.WK2: Update regexp.
	* testsuite/binutils-all/objdump.WK3: Update regexp.
	* testsuite/binutils-all/objdump.exp: Use --process-links
	instead of --dwarf=follow-links.
	* testsuite/binutils-all/readelf.exp (readelf_test): Include
	readelf's output in the log when the test fails.
	Add the -P option to the -wKis test.
	* testsuite/binutils-all/readelf.wKis: Update expected output.

1 files changed, 12 insertions, 0 deletions

diff --git a/binutils/objdump.c b/binutils/objdump.c
index 47b2309..0aa0373 100644
--- a/binutils/objdump.c
+++ b/binutils/objdump.c
@@ -128,6 +128,7 @@ static const char * source_comment;     /* --source_comment.  */
 static bfd_boolean visualize_jumps = FALSE;          /* --visualize-jumps.  */
 static bfd_boolean color_output = FALSE;             /* --visualize-jumps=color.  */
 static bfd_boolean extended_color_output = FALSE;    /* --visualize-jumps=extended-color.  */
+static bfd_boolean process_links = FALSE;   /* --process-links.  */
 
 static int demangle_flags = DMGL_ANSI | DMGL_PARAMS;
 
@@ -247,6 +248,9 @@ usage (FILE *stream, int status)
   -WN,--dwarf=no-follow-links  Do not follow links to separate debug info files (default)\n\
 "));
 #endif
+  fprintf (stream, _("\
+  -L, --process-links          Display the contents of non-debug sections in separate debuginfo files.\n\
+"));
 #ifdef ENABLE_LIBCTF
   fprintf (stream, _("\
   --ctf=SECTION            Display CTF info from SECTION\n\
@@ -383,6 +387,7 @@ static struct option long_options[]=
   {"line-numbers", no_argument, NULL, 'l'},
   {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
   {"no-addresses", no_argument, &no_addresses, 1},
+  {"process-links", no_argument, &process_links, TRUE},
   {"prefix-addresses", no_argument, &prefix_addresses, 1},
   {"recurse-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
   {"recursion-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
@@ -4843,6 +4848,9 @@ dump_bfd (bfd *abfd, bfd_boolean is_mainfile)
       bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
     }
 
+  if (! is_mainfile && ! process_links)
+    return;
+
   if (! dump_debugging_tags && ! suppress_bfd_header)
     printf (_("\n%s:     file format %s\n"),
 	    sanitize_string (bfd_get_filename (abfd)),
@@ -5357,6 +5365,10 @@ main (int argc, char **argv)
 	  do_demangle = TRUE;
 	  seenflag = TRUE;
 	  break;
+	case 'L':
+	  process_links = TRUE;
+	  do_follow_links = TRUE;
+	  break;
 	case 'W':
 	  dump_dwarf_section_info = TRUE;
 	  seenflag = TRUE;