From bcf32829aff66021b9309b1f738d54f24dfa6a8e Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Thu, 16 Dec 2004 13:16:33 +0000 Subject: [PATCH] binutils/ 2004-12-15 Jan Beulich * doc/binutils.texi: Document --strip-unneeded-symbol and --strip-unneeded-symbols. * objcopy.c (strip_unneeded_list): New. (enum command_line_switch): Add OPTION_STRIP_UNNEEDED_SYMBOL and OPTION_STRIP_UNNEEDED_SYMBOLS. (copy_options): Add --strip-unneeded-symbol and --strip-unneeded-symbols. (copy_usage): Likewise. (filter_symbols): Suppress copying of symbol if in strip_unneeded_list and the symbol is not needed. (copy_main): Handle OPTION_STRIP_UNNEEDED_SYMBOL and OPTION_STRIP_UNNEEDED_SYMBOLS. --- binutils/ChangeLog | 15 +++++++++++++++ binutils/NEWS | 5 +++++ binutils/doc/binutils.texi | 12 ++++++++++++ binutils/objcopy.c | 23 +++++++++++++++++++++++ 4 files changed, 55 insertions(+) diff --git a/binutils/ChangeLog b/binutils/ChangeLog index 16d0c4de4f9..4dbb485035a 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,3 +1,18 @@ +2004-12-15 Jan Beulich + + * doc/binutils.texi: Document --strip-unneeded-symbol and + --strip-unneeded-symbols. + * objcopy.c (strip_unneeded_list): New. + (enum command_line_switch): Add OPTION_STRIP_UNNEEDED_SYMBOL + and OPTION_STRIP_UNNEEDED_SYMBOLS. + (copy_options): Add --strip-unneeded-symbol and + --strip-unneeded-symbols. + (copy_usage): Likewise. + (filter_symbols): Suppress copying of symbol if in strip_unneeded_list + and the symbol is not needed. + (copy_main): Handle OPTION_STRIP_UNNEEDED_SYMBOL and + OPTION_STRIP_UNNEEDED_SYMBOLS. + 2004-12-09 Ian Lance Taylor * readelf.c (get_machine_flags): Handle E_MIPS_MACH_9000. diff --git a/binutils/NEWS b/binutils/NEWS index f52b5197308..0c52b4bb562 100644 --- a/binutils/NEWS +++ b/binutils/NEWS @@ -1,5 +1,10 @@ -*- text -*- +* objcopy recognizes two new options --strip-unneeded-symbol and + --strip-unneeded-symbols, namely for use together with the wildcard + matching the original --strip-symbol/--strip-symbols provided, but + retaining any symbols matching but needed by relocations. + * readelf can now display address ranges from .debug_range sections. This happens automatically when a DW_AT_range attribute is encountered. The command line switch --debug-dump=Ranges (or -wR) can also be used to display diff --git a/binutils/doc/binutils.texi b/binutils/doc/binutils.texi index c342184a822..7f6b8eff7d8 100644 --- a/binutils/doc/binutils.texi +++ b/binutils/doc/binutils.texi @@ -947,6 +947,7 @@ objcopy [@option{-F} @var{bfdname}|@option{--target=}@var{bfdname}] [@option{-g}|@option{--strip-debug}] [@option{-K} @var{symbolname}|@option{--keep-symbol=}@var{symbolname}] [@option{-N} @var{symbolname}|@option{--strip-symbol=}@var{symbolname}] + [@option{--strip-unneeded-symbol=}@var{symbolname}] [@option{-G} @var{symbolname}|@option{--keep-global-symbol=}@var{symbolname}] [@option{-L} @var{symbolname}|@option{--localize-symbol=}@var{symbolname}] [@option{-W} @var{symbolname}|@option{--weaken-symbol=}@var{symbolname}] @@ -978,6 +979,7 @@ objcopy [@option{-F} @var{bfdname}|@option{--target=}@var{bfdname}] [@option{--weaken}] [@option{--keep-symbols=}@var{filename}] [@option{--strip-symbols=}@var{filename}] + [@option{--strip-unneeded-symbols=}@var{filename}] [@option{--keep-global-symbols=}@var{filename}] [@option{--localize-symbols=}@var{filename}] [@option{--weaken-symbols=}@var{filename}] @@ -1106,6 +1108,10 @@ be given more than once. Do not copy symbol @var{symbolname} from the source file. This option may be given more than once. +@item --strip-unneeded-symbol=@var{symbolname} +Do not copy symbol @var{symbolname} from the source file unless it is needed +by a relocation. This option may be given more than once. + @item -G @var{symbolname} @itemx --keep-global-symbol=@var{symbolname} Keep only symbol @var{symbolname} global. Make all other symbols local @@ -1347,6 +1353,12 @@ Apply @option{--strip-symbol} option to each symbol listed in the file name per line. Line comments may be introduced by the hash character. This option may be given more than once. +@item --strip-unneeded-symbols=@var{filename} +Apply @option{--strip-unneeded-symbol} option to each symbol listed in +the file @var{filename}. @var{filename} is simply a flat file, with one +symbol name per line. Line comments may be introduced by the hash +character. This option may be given more than once. + @item --keep-global-symbols=@var{filename} Apply @option{--keep-global-symbol} option to each symbol listed in the file @var{filename}. @var{filename} is simply a flat file, with one diff --git a/binutils/objcopy.c b/binutils/objcopy.c index d5931b8dbbe..c516f790760 100644 --- a/binutils/objcopy.c +++ b/binutils/objcopy.c @@ -192,6 +192,7 @@ static bfd_boolean wildcard = FALSE; /* List of symbols to strip, keep, localize, keep-global, weaken, or redefine. */ static struct symlist *strip_specific_list = NULL; +static struct symlist *strip_unneeded_list = NULL; static struct symlist *keep_specific_list = NULL; static struct symlist *localize_specific_list = NULL; static struct symlist *keepglobal_specific_list = NULL; @@ -231,6 +232,8 @@ enum command_line_switch OPTION_SREC_LEN, OPTION_SREC_FORCES3, OPTION_STRIP_SYMBOLS, + OPTION_STRIP_UNNEEDED_SYMBOL, + OPTION_STRIP_UNNEEDED_SYMBOLS, OPTION_KEEP_SYMBOLS, OPTION_LOCALIZE_SYMBOLS, OPTION_KEEPGLOBAL_SYMBOLS, @@ -340,6 +343,8 @@ static struct option copy_options[] = {"strip-all", no_argument, 0, 'S'}, {"strip-debug", no_argument, 0, 'g'}, {"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED}, + {"strip-unneeded-symbol", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOL}, + {"strip-unneeded-symbols", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOLS}, {"strip-symbol", required_argument, 0, 'N'}, {"strip-symbols", required_argument, 0, OPTION_STRIP_SYMBOLS}, {"target", required_argument, 0, 'F'}, @@ -405,6 +410,9 @@ copy_usage (FILE *stream, int exit_status) -g --strip-debug Remove all debugging symbols & sections\n\ --strip-unneeded Remove all symbols not needed by relocations\n\ -N --strip-symbol Do not copy symbol \n\ + --strip-unneeded-symbol \n\ + Do not copy symbol unless needed by\n\ + relocations\n\ --only-keep-debug Strip everything but the debug information\n\ -K --keep-symbol Only copy symbol \n\ -L --localize-symbol Force symbol to be marked as a local\n\ @@ -443,6 +451,9 @@ copy_usage (FILE *stream, int exit_status) --srec-len Restrict the length of generated Srecords\n\ --srec-forceS3 Restrict the type of generated Srecords to S3\n\ --strip-symbols -N for all symbols listed in \n\ + --strip-unneeded-symbols \n\ + --strip-unneeded-symbol for all symbols listed\n\ + in \n\ --keep-symbols -K for all symbols listed in \n\ --localize-symbols -L for all symbols listed in \n\ --keep-global-symbols -G for all symbols listed in \n\ @@ -903,6 +914,10 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms, if (keep && is_specified_symbol (name, strip_specific_list)) keep = 0; + if (keep + && !(flags & BSF_KEEP) + && is_specified_symbol (name, strip_unneeded_list)) + keep = 0; if (!keep && is_specified_symbol (name, keep_specific_list)) keep = 1; if (keep && is_strip_section (abfd, bfd_get_section (sym))) @@ -2525,6 +2540,10 @@ copy_main (int argc, char *argv[]) add_specific_symbol (optarg, &strip_specific_list); break; + case OPTION_STRIP_UNNEEDED_SYMBOL: + add_specific_symbol (optarg, &strip_unneeded_list); + break; + case 'L': add_specific_symbol (optarg, &localize_specific_list); break; @@ -2858,6 +2877,10 @@ copy_main (int argc, char *argv[]) add_specific_symbols (optarg, &strip_specific_list); break; + case OPTION_STRIP_UNNEEDED_SYMBOLS: + add_specific_symbols (optarg, &strip_unneeded_list); + break; + case OPTION_KEEP_SYMBOLS: add_specific_symbols (optarg, &keep_specific_list); break; -- 2.30.2