Szabolcs Nagy 47618209d0 Use hidden visibility for early static PIE code ... Extern symbol access in position independent code usually involves GOT indirection which needs RELATIVE reloc in a static linked PIE. (On some targets this is avoided e.g. because the linker can relax a GOT access to a pc-relative access, but this is not generally true.) Code that runs before static PIE self relocation must avoid relying on dynamic relocations which can be ensured by using hidden visibility. However we cannot just make all symbols hidden: On i386, all calls to IFUNC functions must go through PLT and calls to hidden functions CANNOT go through PLT in PIE since EBX used in PIE PLT may not be set up for local calls to hidden IFUNC functions. This patch aims to make symbol references hidden in code that is used before and by _dl_relocate_static_pie when building a static PIE libc. Note: for an object that is used in the startup code, its references and definition may not have consistent visibility: it is only forced hidden in the startup code. This is needed for fixing bug 27072. Co-authored-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>		2021-01-21 15:55:01 +00:00
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bits	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sys	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
acct.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
allocate_once.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ar.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
brk.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
bug18240.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
bug-hsearch1.c
chflags.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
chroot.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
daemon.c	Remove internal usage of extensible stat functions	2020-09-11 14:35:32 -03:00
dirname.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
efgcvt_r-template.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
efgcvt_r.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
efgcvt-dbl-macros.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
efgcvt-ldbl-macros.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
efgcvt-template.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
efgcvt.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
err.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
err.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
error.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
error.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fchflags.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fd_to_filename.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fdatasync.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fgetxattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
flistxattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fremovexattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fsetxattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fstab.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fstab.h
fsync.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ftruncate64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ftruncate.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
futimes.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
futimesat.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getauxval.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getclktck.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getdomain.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getdtsz.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
gethostid.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
gethostname.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getloadavg.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getpagesize.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getpass.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getsysstats.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getttyent.c
getusershell.c	Remove internal usage of extensible stat functions	2020-09-11 14:35:32 -03:00
getxattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
gtty.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
hsearch_r.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
hsearch.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-impl-list.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
init-misc.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
insremque.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ioctl.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
lgetxattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libgen.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
listxattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
llistxattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
lremovexattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
lsearch.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
lsetxattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
lutimes.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
madvise.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
makedev.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Makefile	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mincore.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mkdtemp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mkostemp64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mkostemp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mkostemps64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mkostemps.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mkstemp64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mkstemp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mkstemps64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mkstemps.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mktemp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mlock.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mlockall.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mmap64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mmap.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mntent_r.c	mntent: Use __putc_unlocked instead of fputc_unlocked	2021-01-08 21:02:12 +05:30
mntent.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mntent.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mprotect.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
msync.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
munlock.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
munlockall.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
munmap.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
preadv2.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
preadv64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
preadv64v2.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
preadv.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
pselect.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ptrace.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
pwritev2.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
pwritev64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
pwritev64v2.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
pwritev.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
qefgcvt_r.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
qefgcvt.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
readv.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
reboot.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
regexp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
regexp.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
remap_file_pages.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
removexattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
revoke.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sbrk.c	Use hidden visibility for early static PIE code	2021-01-21 15:55:01 +00:00
search.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
select.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setdomain.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setegid.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
seteuid.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sethostid.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sethostname.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setregid.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setreuid.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setxattr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sgtty.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
single_threaded.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sstk.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stab.h
stty.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
swapoff.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
swapon.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sync.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
syncfs.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
syscall.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
syscall.h
sysexits.h
syslog.c	Correct locking and cancellation cleanup in syslog functions (bug 26100)	2020-08-18 11:27:03 +02:00
syslog.h
truncate64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
truncate.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tsearch.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-allocate_once.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-atomic-long.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-atomic.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-dbl-efgcvt.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-dirname.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-efgcvt-template.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-empty.c
tst-error1.c
tst-fd_to_filename.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-fdset.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-gethostid.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-hsearch.c
tst-insremque.c
tst-ldbl-efgcvt.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-ldbl-error.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-ldbl-warn.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-makedev.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-mntent2.c
tst-mntent-autofs.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-mntent-blank-corrupt.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-mntent-blank-passno.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-mntent-escape.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-mntent.c
tst-preadvwritev2-common.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-preadvwritev2.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-preadvwritev64.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-preadvwritev64v2.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-preadvwritev-common.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-preadvwritev.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-pselect.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-syscalls.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-tsearch.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-warn-wide.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ttyent.h
ttyslot.c
ualarm.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
usleep.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ustat.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
utimes.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Versions	Add the __libc_single_threaded variable	2020-07-06 11:15:58 +02:00
vhangup.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
writev.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00