mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
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.
|
||
|---|---|---|
| .. | ||
| fpu | ||
| i586 | ||
| i686 | ||
| i786 | ||
| nptl | ||
| sys | ||
| ____longjmp_chk.S | ||
| __longjmp.S | ||
| abort-instr.h | ||
| add_n.S | ||
| addmul_1.S | ||
| asm-syntax.h | ||
| atomic-machine.h | ||
| backtrace.c | ||
| bcopy.S | ||
| bsd-_setjmp.S | ||
| bsd-setjmp.S | ||
| bzero.S | ||
| cacheinfo.c | ||
| configure | ||
| configure.ac | ||
| crti.S | ||
| crtn.S | ||
| dl-irel.h | ||
| dl-lookupcfg.h | ||
| dl-machine.h | ||
| dl-procinfo.c | ||
| dl-tls.h | ||
| dl-tlsdesc.h | ||
| dl-tlsdesc.S | ||
| dl-trampoline.S | ||
| ffs.c | ||
| gccframe.h | ||
| gmp-mparam.h | ||
| htonl.S | ||
| htons.S | ||
| i386-mcount.S | ||
| Implies | ||
| init-arch.h | ||
| jmpbuf-offsets.h | ||
| jmpbuf-unwind.h | ||
| ldbl2mpn.c | ||
| ldsodefs.h | ||
| link-defines.sym | ||
| lshift.S | ||
| machine-gmon.h | ||
| Makefile | ||
| malloc-alignment.h | ||
| memchr.S | ||
| memcmp.S | ||
| memcopy.h | ||
| memcpy_chk.S | ||
| memcpy.S | ||
| memmove_chk.S | ||
| memmove.S | ||
| mempcpy_chk.S | ||
| mempcpy.S | ||
| memset_chk.S | ||
| memset.S | ||
| memusage.h | ||
| mp_clz_tab.c | ||
| mul_1.S | ||
| preconfigure | ||
| pthread_spin_trylock.S | ||
| rawmemchr.S | ||
| rshift.S | ||
| setfpucw.c | ||
| setjmp.S | ||
| stackguard-macros.h | ||
| stackinfo.h | ||
| start.S | ||
| stpcpy.S | ||
| stpncpy.S | ||
| strcat.S | ||
| strchr.S | ||
| strchrnul.S | ||
| strcspn.S | ||
| string-inlines.c | ||
| strlen.c | ||
| strlen.S | ||
| strpbrk.S | ||
| strrchr.S | ||
| strspn.S | ||
| sub_n.S | ||
| submul_1.S | ||
| symbol-hacks.h | ||
| sysdep.h | ||
| tls-macros.h | ||
| tlsdesc.c | ||
| tlsdesc.sym | ||
| tst-audit3.c | ||
| tst-audit3.h | ||
| tst-audit.h | ||
| tst-auditmod3a.c | ||
| tst-auditmod3b.c | ||
| tst-ld-sse-use.sh | ||
| tst-stack-align.h | ||
| Versions | ||