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1bdda52fe9
glibc/sysdeps/powerpc/powerpc64
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Adhemerval Zanella 1bdda52fe9 elf: Move vDSO setup to rtld (BZ#24967) 
This patch moves the vDSO setup from libc to loader code, just after
the vDSO link_map setup.  For static case the initialization
is moved to _dl_non_dynamic_init instead.

Instead of using the mangled pointer, the vDSO data is set as
attribute_relro (on _rtld_global_ro for shared or _dl_vdso_* for
static).  It is read-only even with partial relro.

It fixes BZ#24967 now that the vDSO pointer is setup earlier than
malloc interposition is called.

Also, vDSO calls should not be a problem for static dlopen as
indicated by BZ#20802.  The vDSO pointer would be zero-initialized
and the syscall will be issued instead.

Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu,
arm-linux-gnueabihf, powerpc64le-linux-gnu, powerpc64-linux-gnu,
powerpc-linux-gnu, s390x-linux-gnu, sparc64-linux-gnu, and
sparcv9-linux-gnu.  I also run some tests on mips.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2020-01-03 11:22:07 -03:00
..
a2 Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
be Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
bits Define wordsize.h macros everywhere 2016-11-04 09:37:44 -07:00
cell Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
fpu Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
le Add libm_alias_finite for _finite symbols 2020-01-03 10:02:04 -03:00
multiarch Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
power4 Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
power6 Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
power7 Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
power8 Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
__longjmp-common.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
__longjmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
addmul_1.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
atomic-machine.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
backtrace.c elf: Move vDSO setup to rtld (BZ#24967) 2020-01-03 11:22:07 -03:00
bsd-_setjmp.S PowerPC64 ABI fixes 2010-08-12 09:19:19 -07:00
bsd-setjmp.S PowerPC64 ABI fixes 2010-08-12 09:19:19 -07:00
bzero.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
configure powerpc64 configure message 2015-03-25 15:45:36 +10:30
configure.ac powerpc64 configure message 2015-03-25 15:45:36 +10:30
crti.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
crtn.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-dtprocnum.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-irel.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-machine.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-machine.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-trampoline.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
entry.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
ffsll.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
hp-timing.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Implies Revert "Use ieee754/dbl-64/wordsize-64 on powerpc64" 2013-01-10 10:44:05 +01:00
lshift.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Makefile powerpc: Fix VSCR position in ucontext (bug 24088) 2019-01-11 15:17:25 -02:00
memcpy.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memset.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
mul_1.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
ppc-mcount.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
register-dump.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
rtld-memset.c powerpc: Use generic memset for RTLD for ppc32/64 2010-09-29 12:21:14 -04:00
setjmp-bug21895.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
setjmp-common.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
setjmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
stackguard-macros.h PowerPC: Fix POINTER_CHK_GUARD thread register for PPC64 2013-09-25 13:43:04 -05:00
start.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strchr.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strlen.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
submul_1.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tls-macros.h tst-tlsopt-powerpc as a shared lib 2017-08-03 15:39:21 +09:30
tst-audit.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-setjmp-bug21895-static.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-ucontext-ppc64-vscr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00