mirror of git://sourceware.org/git/glibc.git
8bcdb7e0c5
Mark internal functions with attribute_hidden to allow direct access to
internal functions within libc.so and libc.a without using GOT nor PLT.
Size comparison of libc.so:
On x86-64:
text data bss dec hex
Before: 1728577 20584 17088 1766249 1af369
After : 1728593 20584 17088 1766265 1af379
The only change is __gconv_release_shlib in iconv/gconv_dl.c is inlined
since it is hidden, which increases the code size of gconv_dl.os by 18
bytes.
On i686:
text data bss dec hex
Before: 1869039 11444 11112 1891595 1cdd0b
After : 1868635 11444 11112 1891191 1cdb77
The code size is decreased by avoiding GOT/PLT for hidden functions.
[BZ #18822]
* iconv/gconv_int.h (__gconv_open): Add attribute_hidden.
(__gconv_close): Likewise.
(__gconv): Likewise.
(__gconv_find_transform): Likewise.
(__gconv_lookup_cache): Likewise.
(__gconv_compare_alias_cache): Likewise.
(__gconv_load_cache): Likewise.
(__gconv_get_path): Likewise.
(__gconv_close_transform): Likewise.
(__gconv_release_cache): Likewise.
(__gconv_find_shlib): Likewise.
(__gconv_release_shlib): Likewise.
(__gconv_get_builtin_trans): Likewise.
(__gconv_compare_alias): Likewise.
* include/dlfcn.h (_dlerror_run): Likewise.
* include/stdio.h (__fortify_fail_abort): Likewise.
* include/time.h (__tz_compute): Likewise.
(__strptime_internal): Likewise.
* intl/gettextP.h (_nl_find_domain): Likewise.
(_nl_load_domain): Likewise.
(_nl_find_msg): Likewise.
* intl/plural-exp.h (FREE_EXPRESSION): Likewise.
(EXTRACT_PLURAL_EXPRESSION): Likewise.
* locale/coll-lookup.h (__collidx_table_lookup): Likewise.
* resolv/gai_misc.h (__gai_enqueue_request): Likewise.
(__gai_find_request): Likewise.
(__gai_remove_request): Likewise.
(__gai_notify): Likewise.
(__gai_notify_only): Likewise.
* sysdeps/generic/aio_misc.h (__aio_sigqueue): Likewise.
* sysdeps/generic/ldsodefs.h (_dl_fini): Likewise.
(_dl_non_dynamic_init): Likewise.
(_dl_aux_init): Likewise.
* sysdeps/i386/machine-gmon.h (mcount_internal): Likewise.
* sysdeps/unix/sysv/linux/i386/olddirent.h (__old_getdents64):
Likewise.
* wcsmbs/wcsmbsload.h (__wcsmbs_load_conv): Likewise.
(__wcsmbs_clone_conv): Likewise.
(__wcsmbs_named_conv): Likewise.
|
||
|---|---|---|
| .. | ||
| Makefile | ||
| Versions | ||
| dummy-repertoire.c | ||
| gconv.c | ||
| gconv.h | ||
| gconv_builtin.c | ||
| gconv_builtin.h | ||
| gconv_cache.c | ||
| gconv_charset.h | ||
| gconv_close.c | ||
| gconv_conf.c | ||
| gconv_db.c | ||
| gconv_dl.c | ||
| gconv_int.h | ||
| gconv_open.c | ||
| gconv_simple.c | ||
| gconv_trans.c | ||
| iconv.c | ||
| iconv.h | ||
| iconv_charmap.c | ||
| iconv_close.c | ||
| iconv_open.c | ||
| iconv_prog.c | ||
| iconv_prog.h | ||
| iconvconfig.c | ||
| iconvconfig.h | ||
| loop.c | ||
| skeleton.c | ||
| strtab.c | ||
| test-gconv-modules | ||
| tst-gconv-init-failure-mod.c | ||
| tst-gconv-init-failure.c | ||
| tst-iconv1.c | ||
| tst-iconv2.c | ||
| tst-iconv3.c | ||
| tst-iconv4.c | ||
| tst-iconv5.c | ||
| tst-iconv6.c | ||