Alan Modra 19a6a3acd1 Harden powerpc64 elf_machine_fixup_plt ... IFUNC is difficult to correctly implement on any target needing a GOT to support position independent code, due to the dependency on order of dynamic relocations. ld.so should be changed to apply IFUNC relocations last, globally, because without that it is actually impossible to write an IFUNC resolver in C that works in all situations. Case in point, vfork in libpthread.so is an IFUNC with the resolver returning &__libc_vfork. (system and fork are similar.) If another shared library, libA say, uses vfork then it is quite possible that libpthread.so hasn't been dynamically relocated before the unfortunate libA is dynamically relocated. In that case the GOT entry for &__libc_vfork is still zero, so the IFUNC resolver returns NULL. LD_BIND_NOW=1 results in libA PLT dynamic relocations being applied using this NULL value and ld.so segfaults. This patch hardens ld.so to not segfault on a NULL from an IFUNC resolver. It also fixes a problem with undefined weak. If you leave the plt entry as-is for undefined weak then if the entry is ever called it will loop in ld.so rather than segfaulting. * sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_fixup_plt): Don't segfault if ifunc resolver returns a NULL. Do set plt to zero for undefined weak. (elf_machine_plt_conflict): Similarly.		2015-03-26 12:30:45 +10:30
..
970	powerpc: Re-work the Implies structure	2010-06-30 09:57:38 -07:00
a2	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
bits	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
cell	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
fpu	powerpc: Fix fsqrt build in libm [BZ#16576]	2015-01-28 05:59:16 -05:00
multiarch	powerpc: Fix memmove static build	2015-02-25 13:25:54 -05:00
power4	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
power5	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
power5+	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
power6	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
power6x	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
power7	powerpc: POWER7 strncpy optimization for unaligned string	2015-02-12 13:16:08 -05:00
power8	powerpc: Fix powerpc64 build failure with binutils 2.22	2015-01-24 08:40:04 -05:00
__longjmp-common.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
__longjmp.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
addmul_1.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
backtrace.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
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.	2015-01-02 16:29:47 +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.	2015-01-02 16:29:47 +00:00
crtn.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
dl-dtprocnum.h	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
dl-irel.h	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
dl-machine.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
dl-machine.h	Harden powerpc64 elf_machine_fixup_plt	2015-03-26 12:30:45 +10:30
dl-trampoline.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
entry.h	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
ffsll.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
hp-timing.h	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +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.	2015-01-02 16:29:47 +00:00
Makefile	Remove HP_TIMING_DIFF_INIT and dl_hp_timing_overhead	2014-07-03 08:38:25 -07:00
memcpy.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
memset.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
mul_1.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
ppc-mcount.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
register-dump.h	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
rtld-memset.c	powerpc: Use generic memset for RTLD for ppc32/64	2010-09-29 12:21:14 -04:00
setjmp-common.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
setjmp.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +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.	2015-01-02 16:29:47 +00:00
stpcpy.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strchr.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strcmp.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strcpy.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strcspn.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strlen.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strncmp.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strpbrk.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strspn.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strtok_r.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strtok.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
submul_1.S	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
sysdep.h	powerpc: Remove HAVE_ASM_GLOBAL_DOT_NAME define	2015-03-11 09:01:05 -04:00
tls-macros.h	powerpc: Remove HAVE_ASM_GLOBAL_DOT_NAME define	2015-03-11 09:01:05 -04:00
tst-audit.h	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00