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
..
bits	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
multiarch	aarch64: Fix the list of tested IFUNC variants [BZ #26818]	2021-01-25 16:15:54 +00:00
nptl	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
__longjmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
__mtag_address_get_tag.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
__mtag_memset_tag.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
__mtag_new_tag.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
__mtag_tag_region.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
abort-instr.h	Relocate AArch64 from ports to libc.	2014-02-11 11:36:00 +00:00
atomic-machine.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
bsd-_setjmp.c	aarch64: Rename place holder .S files to .c	2020-07-08 15:02:37 +01:00
bsd-setjmp.c	aarch64: Rename place holder .S files to .c	2020-07-08 15:02:37 +01:00
configure	configure: Check for static PIE support	2021-01-21 15:54:50 +00:00
configure.ac	configure: Check for static PIE support	2021-01-21 15:54:50 +00:00
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-bti.c	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-link.sym	Relocate AArch64 from ports to libc.	2014-02-11 11:36:00 +00:00
dl-machine.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-prop.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-sysdep.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-tls.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-tlsdesc.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-tlsdesc.S	aarch64: push the set of rules before falling into slow path	2021-01-05 09:25:19 +00:00
dl-trampoline.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-tunables.list	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
e_sqrtl.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
elf-initfini.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Implies	Remove dbl-64/wordsize-64 (part 2)	2021-01-07 15:26:26 +00:00
jmpbuf-offsets.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
jmpbuf-unwind.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ldsodefs.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc-mtag.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc-tls.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libm-test-ulps	aarch64: update ulps.	2020-12-21 16:40:34 +00:00
libm-test-ulps-name	Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139).	2016-11-04 16:49:06 +00:00
linkmap.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
machine-gmon.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Makefile	aarch64: Add aarch64-specific files for memory tagging support	2020-12-21 15:25:25 +00:00
math-tests-trap.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mcount.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memchr.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcpy.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memmove.c	aarch64: Rename place holder .S files to .c	2020-07-08 15:02:37 +01:00
memrchr.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memset-reg.h	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
memusage.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
preconfigure	Remove relro configure test.	2014-06-27 16:51:22 +00:00
rawmemchr.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
sfp-machine.h	Break more lines before not after operators.	2019-02-25 13:19:19 +00:00
sotruss-lib.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stackinfo.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
start.S	Reduce the statically linked startup code [BZ #23323]	2021-02-25 12:13:02 +01:00
stpcpy.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strchr.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strchrnul.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
strcpy.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
string_private.h	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
strnlen.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strrchr.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sysdep.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tls-macros.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tlsdesc.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tlsdesc.sym	aarch64: Use explicit offsets in _dl_tlsdesc_dynamic	2016-12-02 16:52:57 +01:00
tst-audit.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-ifunc-arg-1.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-ifunc-arg-2.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-vpcs-mod.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-vpcs.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Versions	Relocate AArch64 from ports to libc.	2014-02-11 11:36:00 +00:00