binutils/

2005-11-15  Jan Beulich  <jbeulich@novell.com>

	* objcopy.c (keep_file_symbols): New.
	(enum command_line_switch): Add OPTION_KEEP_FILE_SYMBOLS.
	(strip_options): Add --keep-file-symbols.
	(copy_options): Likewise.
	(copy_usage): Likewise.
	(strip_usage): Likewise.
	(filter_symbols): Act upon keep_file_symbols.
	(strip_main): Handle OPTION_KEEP_FILE_SYMBOLS.
	(copy_main): Likewise.
	* doc/binutils.texi: Document --keep-file-symbols for objcopy
	and strip.

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index c025d1c..a84b9b3 100644 (file)
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,17 @@
+2005-11-15  Jan Beulich  <jbeulich@novell.com>
+
+       * objcopy.c (keep_file_symbols): New.
+       (enum command_line_switch): Add OPTION_KEEP_FILE_SYMBOLS.
+       (strip_options): Add --keep-file-symbols.
+       (copy_options): Likewise.
+       (copy_usage): Likewise.
+       (strip_usage): Likewise.
+       (filter_symbols): Act upon keep_file_symbols.
+       (strip_main): Handle OPTION_KEEP_FILE_SYMBOLS.
+       (copy_main): Likewise.
+       * doc/binutils.texi: Document --keep-file-symbols for objcopy
+       and strip.
+
 2005-11-14  Daniel Jacobowitz  <dan@codesourcery.com>
 
        * readelf.c (struct dump_list_entry, request_dump_byname)

diff --git a/binutils/doc/binutils.texi b/binutils/doc/binutils.texi
index f01919a..ee5114c 100644 (file)
--- a/binutils/doc/binutils.texi
+++ b/binutils/doc/binutils.texi
@@ -991,6 +991,7 @@ objcopy [@option{-F} @var{bfdname}|@option{--target=}@var{bfdname}]
         [@option{--prefix-sections=}@var{string}]
         [@option{--prefix-alloc-sections=}@var{string}]
         [@option{--add-gnu-debuglink=}@var{path-to-file}]
+        [@option{--keep-file-symbols}]
         [@option{--only-keep-debug}]
         [@option{--writable-text}]
         [@option{--readonly-text}]
@@ -1428,6 +1429,11 @@ Prefix all the names of all allocated sections in the output file with
 Creates a .gnu_debuglink section which contains a reference to @var{path-to-file}
 and adds it to the output file.
 
+@item --keep-file-symbols
+When stripping a file, perhaps with @option{--strip-debug} or
+@option{--strip-unneeded}, retain any symbols specifying source file names,
+which would otherwise get stripped.
+
 @item --only-keep-debug
 Strip a file, removing contents of any sections that would not be
 stripped by @option{--strip-debug} and leaving the debugging sections
@@ -2223,6 +2229,7 @@ strip [@option{-F} @var{bfdname} |@option{--target=}@var{bfdname}]
       [@option{-x}|@option{--discard-all}] [@option{-X} |@option{--discard-locals}]
       [@option{-R} @var{sectionname} |@option{--remove-section=}@var{sectionname}]
       [@option{-o} @var{file}] [@option{-p}|@option{--preserve-dates}]
+      [@option{--keep-file-symbols}]
       [@option{--only-keep-debug}]
       [@option{-v} |@option{--verbose}] [@option{-V}|@option{--version}]
       [@option{--help}] [@option{--info}]
@@ -2331,6 +2338,11 @@ Remove non-global symbols.
 Remove compiler-generated local symbols.
 (These usually start with @samp{L} or @samp{.}.)
 
+@item --keep-file-symbols
+When stripping a file, perhaps with @option{--strip-debug} or
+@option{--strip-unneeded}, retain any symbols specifying source file names,
+which would otherwise get stripped.
+
 @item --only-keep-debug
 Strip a file, removing any sections that would be stripped by
 @option{--strip-debug} and leaving the debugging sections.

diff --git a/binutils/objcopy.c b/binutils/objcopy.c
index d46d093..e93534d 100644 (file)
--- a/binutils/objcopy.c
+++ b/binutils/objcopy.c
@@ -203,6 +203,9 @@ static struct redefine_node *redefine_sym_list = NULL;
 /* If this is TRUE, we weaken global symbols (set BSF_WEAK).  */
 static bfd_boolean weaken = FALSE;
 
+/* If this is TRUE, we retain BSF_FILE symbols.  */
+static bfd_boolean keep_file_symbols = FALSE;
+
 /* Prefix symbols/sections.  */
 static char *prefix_symbols_string = 0;
 static char *prefix_sections_string = 0;
@@ -249,6 +252,7 @@ enum command_line_switch
     OPTION_FORMATS_INFO,
     OPTION_ADD_GNU_DEBUGLINK,
     OPTION_ONLY_KEEP_DEBUG,
+    OPTION_KEEP_FILE_SYMBOLS,
     OPTION_READONLY_TEXT,
     OPTION_WRITABLE_TEXT,
     OPTION_PURE,
@@ -266,6 +270,7 @@ static struct option strip_options[] =
   {"info", no_argument, 0, OPTION_FORMATS_INFO},
   {"input-format", required_argument, 0, 'I'}, /* Obsolete */
   {"input-target", required_argument, 0, 'I'},
+  {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
   {"keep-symbol", required_argument, 0, 'K'},
   {"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
   {"output-format", required_argument, 0, 'O'},        /* Obsolete */
@@ -317,6 +322,7 @@ static struct option copy_options[] =
   {"input-format", required_argument, 0, 'I'}, /* Obsolete */
   {"input-target", required_argument, 0, 'I'},
   {"interleave", required_argument, 0, 'i'},
+  {"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
   {"keep-global-symbol", required_argument, 0, 'G'},
   {"keep-global-symbols", required_argument, 0, OPTION_KEEPGLOBAL_SYMBOLS},
   {"keep-symbol", required_argument, 0, 'K'},
@@ -420,6 +426,7 @@ copy_usage (FILE *stream, int exit_status)
                                      relocations\n\
      --only-keep-debug             Strip everything but the debug information\n\
   -K --keep-symbol <name>          Do not strip symbol <name>\n\
+     --keep-file-symbols           Do not strip file symbol(s)\n\
   -L --localize-symbol <name>      Force symbol <name> to be marked as a local\n\
      --globalize-symbol <name>     Force symbol <name> to be marked as a global\n\
   -G --keep-global-symbol <name>   Localize all symbols except <name>\n\
@@ -505,6 +512,7 @@ strip_usage (FILE *stream, int exit_status)
      --only-keep-debug             Strip everything but the debug information\n\
   -N --strip-symbol=<name>         Do not copy symbol <name>\n\
   -K --keep-symbol=<name>          Do not strip symbol <name>\n\
+     --keep-file-symbols           Do not strip file symbol(s)\n\
   -w --wildcard                    Permit wildcard in symbol comparison\n\
   -x --discard-all                 Remove all non-global symbols\n\
   -X --discard-locals              Remove any compiler-generated symbols\n\
@@ -926,7 +934,9 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
          && !(flags & BSF_KEEP)
          && is_specified_symbol (name, strip_unneeded_list))
        keep = 0;
-      if (!keep && is_specified_symbol (name, keep_specific_list))
+      if (!keep
+         && ((keep_file_symbols && (flags & BSF_FILE))
+             || is_specified_symbol (name, keep_specific_list)))
        keep = 1;
       if (keep && is_strip_section (abfd, bfd_get_section (sym)))
        keep = 0;
@@ -2460,6 +2470,9 @@ strip_main (int argc, char *argv[])
        case OPTION_ONLY_KEEP_DEBUG:
          strip_symbols = STRIP_NONDEBUG;
          break;
+       case OPTION_KEEP_FILE_SYMBOLS:
+         keep_file_symbols = 1;
+         break;
        case 0:
          /* We've been given a long option.  */
          break;
@@ -2617,6 +2630,10 @@ copy_main (int argc, char *argv[])
          strip_symbols = STRIP_NONDEBUG;
          break;
 
+       case OPTION_KEEP_FILE_SYMBOLS:
+         keep_file_symbols = 1;
+         break;
+
        case OPTION_ADD_GNU_DEBUGLINK:
          gnu_debuglink_filename = optarg;
          break;