H.J. Lu 8bcdb7e0c5 Mark internal functions with attribute_hidden [BZ #18822] ...

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.

2017-10-01 15:07:23 -07:00

..

arpa

nss_dns: Replace local declarations with declarations from a header file

2017-04-04 20:56:23 +02:00

bits

Fix sigval namespace (bug 21944).

2017-08-16 20:33:59 +00:00

gnu

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

net

Fix resolver if_* namespace (bug 17717).

2014-12-16 18:18:49 +00:00

netinet

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

programs

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

protocols

…

rpc

sunrpc: Remove internal_function attribute

2017-08-31 15:59:02 +02:00

rpcsvc

Deprecate libnsl by default (only shared library will be

2017-03-21 15:14:27 +01:00

sys

Hide __chmod and __mkdir [BZ #18822]

2017-09-04 13:38:51 -07:00

aio.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

aliases.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

alloc_buffer.h

Implement allocation buffers for internal use

2017-06-21 22:43:57 +02:00

alloca.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

argp.h

…

argz.h

Mark internal argz functions with attribute_hidden [BZ #18822]

2017-08-18 09:31:33 -07:00

assert.h

Remove NOT_IN_libc

2014-11-24 15:03:45 +05:30

atomic.h

Optimize generic spinlock code and use C11 like atomic macros.

2017-06-06 09:41:56 +02:00

byteswap.h

…

caller.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

complex.h

float128: Add private _Float128 declarations for libm.

2017-05-15 10:23:28 -03:00

cpio.h

Add more headers to include/ for conform tests.

2014-12-11 21:41:30 +00:00

crypt.h

Add include/crypt.h.

2016-10-28 22:40:16 -04:00

ctype.h

Rename bits/libc-tsd.h to libc-tsd.h (bug 14912).

2015-09-03 20:33:46 +00:00

des.h

…

dirent.h

hurd: Fix seekdir' symbol exposition from rewinddir'

2017-09-28 00:49:59 +02:00

dlfcn.h

Mark internal functions with attribute_hidden [BZ #18822]

2017-10-01 15:07:23 -07:00

dso_handle.h

Mark __dso_handle as hidden [BZ #18822]

2017-09-26 16:53:44 -07:00

elf.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

endian.h

…

envz.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

err.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

errno.h

Remove __need macros from errno.h (__need_Emath, __need_error_t).

2017-06-14 08:14:34 -04:00

error.h

…

execinfo.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

fcntl.h

Consolidate remaning non cancellable definitions

2017-08-23 10:47:03 -03:00

features.h

Update for 2.26 release

2017-08-02 18:27:16 +05:30

fenv.h

Mark fegetround pure (bug 16296).

2015-09-15 20:36:50 +00:00

float.h

Include libc-header-start.h in include/float.h

2017-06-23 10:30:04 -03:00

fmtmsg.h

Add more headers to include/ for conform tests.

2014-12-11 21:41:30 +00:00

fnmatch.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

fpu_control.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

ftw.h

…

gconv.h

…

getopt_int.h

…

getopt.h

getopt: remove USE_NONOPTION_FLAGS

2017-04-07 07:45:53 -04:00

glob.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

gmp.h

float128: Add strtof128, wcstof128, and related functions.

2017-06-12 14:48:53 -03:00

gnu-versions.h

posix: Add compat glob symbol to not follow dangling symbols

2017-09-25 18:04:16 -07:00

grp-merge.h

NSS: Implement group merging support.

2016-04-29 22:18:21 -04:00

grp.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

gshadow.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

iconv.h

…

ifaddrs.h

hurd: Fix getifaddrs' and freeifaddrs' symbol exposition

2017-09-28 01:05:18 +02:00

ifunc-impl-list.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

inline-hashtab.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

langinfo.h

Add first fixes for conformtest for POSIX2008

2012-02-26 21:32:56 -05:00

libc-diag.h

Split DIAG_* macros to new header libc-diag.h.

2017-02-25 09:59:46 -05:00

libc-internal.h

Mark __libc_multiple_libcs with attribute_hidden [BZ #18822]

2017-08-21 05:32:39 -07:00

libc-pointer-arith.h

Narrowing the visibility of libc-internal.h even further.

2017-03-01 20:33:46 -05:00

libc-symbols.h

libc-symbols.h: Remove definition of internal_function

2017-08-31 18:52:00 +02:00

libgen.h

…

libintl.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

libio.h

Remove _IO_MTSAFE_IO from public headers.

2017-05-11 19:14:11 -04:00

limits.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

link.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

list_t.h

Remove __need_list_t and __need_res_state.

2017-05-20 19:01:46 -04:00

list.h

Remove __need_list_t and __need_res_state.

2017-05-20 19:01:46 -04:00

locale.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

malloc.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

math.h

Make more libm functions into weak aliases.

2017-09-14 22:28:53 +00:00

mcheck.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

memory.h

…

mntent.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

monetary.h

Use locale_t, not __locale_t, throughout glibc

2017-06-20 20:30:06 -04:00

mqueue.h

Fix mq_receive, mq_send mq_timed* namespace (bug 18545).

2015-06-17 20:19:04 +00:00

netdb.h

Fix network headers stdint.h namespace (bug 21455).

2017-05-04 20:36:42 +00:00

netgroup.h

…

nl_types.h

…

nss.h

NSS: Remove internal_function function attribute

2017-08-31 15:59:06 +02:00

nsswitch.h

…

obstack.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

poll.h

…

printf.h

Hide internal printf functions [BZ #18822/21986]

2017-08-22 07:50:57 -07:00

pthread.h

Fix mq_notify pthread_barrier_* namespace (bug 18544).

2015-06-17 20:16:56 +00:00

pty.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

pwd.h

Harden putpwent, putgrent, putspent, putspent against injection [BZ #18724]

2015-10-02 11:34:13 +02:00

regex.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

resolv.h

resolv: Introduce struct resolv_context [BZ #21668]

2017-07-03 20:52:59 +02:00

rounding-mode.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

sched.h

Clean pthread functions namespaces for C11 threads

2017-06-23 17:38:17 -03:00

scratch_buffer.h

scratch_buffer: use union for internal buffer

2017-09-25 18:04:22 -07:00

search.h

Fix sem_* tdelete, tfind, tsearch, twalk namespace (bug 18536).

2015-06-17 20:11:58 +00:00

set-hooks.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

setjmp.h

Move ____longjmp_chk prototype to include/setjmp.h

2017-08-20 06:30:46 -07:00

sgtty.h

…

shadow.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

shlib-compat.h

Fix tests that are testing obsoleted functionality

2017-09-05 12:24:00 -07:00

signal.h

Consolidate remaning non cancellable definitions

2017-08-23 10:47:03 -03:00

spawn.h

…

stab.h

…

stackinfo.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

stap-probe.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

stdc-predef.h

Bug 21533: Update to Unicode 10.0.0

2017-06-22 17:02:55 +02:00

stdio_ext.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

stdio.h

Mark internal functions with attribute_hidden [BZ #18822]

2017-10-01 15:07:23 -07:00

stdlib.h

Mark internal stdlib functions with attribute_hidden [BZ #18822]

2017-10-01 14:34:54 -07:00

string.h

Remove bits/string.h.

2017-06-20 08:21:24 -04:00

strings.h

…

stropts.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

stubs-prologue.h

…

syscall.h

…

sysexits.h

…

syslog.h

…

tar.h

…

termios.h

Clean pthread functions namespaces for C11 threads

2017-06-23 17:38:17 -03:00

tgmath.h

…

time.h

Mark internal functions with attribute_hidden [BZ #18822]

2017-10-01 15:07:23 -07:00

ttyent.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

uchar.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

ucontext.h

…

ulimit.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

unistd.h

hurd: Fix revoke' symbol exposition from unlockpt'

2017-09-28 00:49:05 +02:00

utime.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00

utmp.h

Installed header hygiene (BZ#20366): Test of installed headers.

2016-09-23 08:43:56 -04:00

values.h

Update copyright dates with scripts/update-copyrights.

2017-01-01 00:14:16 +00:00

wchar.h

Use locale_t, not __locale_t, throughout glibc

2017-06-20 20:30:06 -04:00

wctype.h

Remove __need macros from stdio.h and wchar.h.

2017-06-08 13:58:17 -04:00

wordexp.h

First steps to get conformtest fully working

2012-02-25 23:18:39 -05:00