Florian Weimer 035c012e32 Reduce the statically linked startup code [BZ #23323] ... It turns out the startup code in csu/elf-init.c has a perfect pair of ROP gadgets (see Marco-Gisbert and Ripoll-Ripoll, "return-to-csu: A New Method to Bypass 64-bit Linux ASLR"). These functions are not needed in dynamically-linked binaries because DT_INIT/DT_INIT_ARRAY are already processed by the dynamic linker. However, the dynamic linker skipped the main program for some reason. For maximum backwards compatibility, this is not changed, and instead, the main map is consulted from __libc_start_main if the init function argument is a NULL pointer. For statically linked binaries, the old approach based on linker symbols is still used because there is nothing else available. A new symbol version __libc_start_main@@GLIBC_2.34 is introduced because new binaries running on an old libc would not run their ELF constructors, leading to difficult-to-debug issues.		2021-02-25 12:13:02 +01:00
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a2	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
be	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
bits	Define wordsize.h macros everywhere	2016-11-04 09:37:44 -07:00
cell	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fpu	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
le	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
multiarch	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
power4	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
power6	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
power7	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
power8	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
__longjmp-common.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
__longjmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
addmul_1.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
atomic-machine.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
backtrace.c	powerpc64: Workaround sigtramp vdso return call	2021-01-28 13:57:50 -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	2021-01-02 12:17:34 -08:00
configure	powerpc64: Fix calls when r2 is not used [BZ #26173]	2020-07-10 19:41:06 -03:00
configure.ac	powerpc64: Fix calls when r2 is not used [BZ #26173]	2020-07-10 19:41:06 -03:00
crti.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
crtn.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-dtprocnum.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-irel.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-machine.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-machine.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-trampoline.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
entry.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ffsll.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
hp-timing.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
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	2021-01-02 12:17:34 -08:00
Makefile	powerpc64: apply -mabi=ibmlongdouble to special files	2020-03-25 14:34:23 -05:00
memcpy.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memset.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mul_1.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ppc-mcount.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
register-dump.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
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	2021-01-02 12:17:34 -08:00
setjmp-common.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setjmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stackguard-macros.h	PowerPC: Fix POINTER_CHK_GUARD thread register for PPC64	2013-09-25 13:43:04 -05:00
start.S	Reduce the statically linked startup code [BZ #23323]	2021-02-25 12:13:02 +01:00
strchr.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strlen.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
submul_1.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sysdep.h	powerpc64: Select POWER9 machine for the scv instruction	2021-01-22 10:45:27 +01:00
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	2021-01-02 12:17:34 -08:00
tst-setjmp-bug21895-static.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-ucontext-ppc64-vscr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00