diff options
| -rw-r--r-- | gnu/usr.bin/binutils-2.17/binutils/doc/binutils.texi | 6 | ||||
| -rw-r--r-- | gnu/usr.bin/binutils-2.17/binutils/objcopy.c | 32 |
2 files changed, 37 insertions, 1 deletions
diff --git a/gnu/usr.bin/binutils-2.17/binutils/doc/binutils.texi b/gnu/usr.bin/binutils-2.17/binutils/doc/binutils.texi index be571d2a7cc..567954ced18 100644 --- a/gnu/usr.bin/binutils-2.17/binutils/doc/binutils.texi +++ b/gnu/usr.bin/binutils-2.17/binutils/doc/binutils.texi @@ -952,6 +952,7 @@ objcopy [@option{-F} @var{bfdname}|@option{--target=}@var{bfdname}] [@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{--localize-hidden}] [@option{-L} @var{symbolname}|@option{--localize-symbol=}@var{symbolname}] [@option{--globalize-symbol=}@var{symbolname}] [@option{-W} @var{symbolname}|@option{--weaken-symbol=}@var{symbolname}] @@ -1124,6 +1125,11 @@ Keep only symbol @var{symbolname} global. Make all other symbols local to the file, so that they are not visible externally. This option may be given more than once. +@item --localize-hidden +In an ELF object, mark all symbols that have hidden or internal visibility +as local. This option applies on top of symbol-specific localization options +such as @option{-L}. + @item -L @var{symbolname} @itemx --localize-symbol=@var{symbolname} Make symbol @var{symbolname} local to the file, so that it is not diff --git a/gnu/usr.bin/binutils-2.17/binutils/objcopy.c b/gnu/usr.bin/binutils-2.17/binutils/objcopy.c index d57c71f3928..9ffaabb80c4 100644 --- a/gnu/usr.bin/binutils-2.17/binutils/objcopy.c +++ b/gnu/usr.bin/binutils-2.17/binutils/objcopy.c @@ -190,6 +190,9 @@ static bfd_boolean remove_leading_char = FALSE; /* Whether to permit wildcard in symbol comparison. */ static bfd_boolean wildcard = FALSE; +/* True if --localize-hidden is in effect. */ +static bfd_boolean localize_hidden = FALSE; + /* List of symbols to strip, keep, localize, keep-global, weaken, or redefine. */ static struct symlist *strip_specific_list = NULL; @@ -240,6 +243,7 @@ enum command_line_switch OPTION_STRIP_UNNEEDED_SYMBOL, OPTION_STRIP_UNNEEDED_SYMBOLS, OPTION_KEEP_SYMBOLS, + OPTION_LOCALIZE_HIDDEN, OPTION_LOCALIZE_SYMBOLS, OPTION_GLOBALIZE_SYMBOL, OPTION_GLOBALIZE_SYMBOLS, @@ -328,6 +332,7 @@ static struct option copy_options[] = {"keep-global-symbols", required_argument, 0, OPTION_KEEPGLOBAL_SYMBOLS}, {"keep-symbol", required_argument, 0, 'K'}, {"keep-symbols", required_argument, 0, OPTION_KEEP_SYMBOLS}, + {"localize-hidden", no_argument, 0, OPTION_LOCALIZE_HIDDEN}, {"localize-symbol", required_argument, 0, 'L'}, {"localize-symbols", required_argument, 0, OPTION_LOCALIZE_SYMBOLS}, {"no-adjust-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS}, @@ -428,6 +433,7 @@ copy_usage (FILE *stream, int exit_status) --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\ + --localize-hidden Turn all ELF hidden symbols into locals\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\ @@ -809,6 +815,24 @@ is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) return FALSE; } +/* Return true if SYM is a hidden symbol. */ + +static bfd_boolean +is_hidden_symbol (asymbol *sym) +{ + elf_symbol_type *elf_sym; + + elf_sym = elf_symbol_from (sym->the_bfd, sym); + if (elf_sym != NULL) + switch (ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other)) + { + case STV_HIDDEN: + case STV_INTERNAL: + return TRUE; + } + return FALSE; +} + /* Choose which symbol entries to copy; put the result in OSYMS. We don't copy in place, because that confuses the relocs. Return the number of symbols to print. */ @@ -955,7 +979,8 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms, && (flags & (BSF_GLOBAL | BSF_WEAK)) && (is_specified_symbol (name, localize_specific_list) || (keepglobal_specific_list != NULL - && ! is_specified_symbol (name, keepglobal_specific_list)))) + && ! is_specified_symbol (name, keepglobal_specific_list)) + || (localize_hidden && is_hidden_symbol (sym)))) { sym->flags &= ~ (BSF_GLOBAL | BSF_WEAK); sym->flags |= BSF_LOCAL; @@ -1532,6 +1557,7 @@ copy_object (bfd *ibfd, bfd *obfd) || strip_symbols == STRIP_UNNEEDED || strip_symbols == STRIP_NONDEBUG || discard_locals != LOCALS_UNDEF + || localize_hidden || strip_specific_list != NULL || keep_specific_list != NULL || localize_specific_list != NULL @@ -3060,6 +3086,10 @@ copy_main (int argc, char *argv[]) add_specific_symbols (optarg, &keep_specific_list); break; + case OPTION_LOCALIZE_HIDDEN: + localize_hidden = TRUE; + break; + case OPTION_LOCALIZE_SYMBOLS: add_specific_symbols (optarg, &localize_specific_list); break; |