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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64	Reduce the statically linked startup code [BZ #23323]	2021-02-25 12:13:02 +01:00
x32	Reduce the statically linked startup code [BZ #23323]	2021-02-25 12:13:02 +01:00
____longjmp_chk.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
__start_context.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
clone.S	x86_64/clone.S: Upate comments	2021-02-22 04:30:38 -08:00
compat-timer.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
configure	Move architecture cases out of sysdeps/unix/sysv/linux/configure.ac.	2014-06-24 20:53:03 +00:00
configure.ac	Move architecture cases out of sysdeps/unix/sysv/linux/configure.ac.	2014-06-24 20:53:03 +00:00
dl-cache.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-procinfo.c	Add _dl_x86_cpu_features to rtld_global	2015-08-13 03:41:22 -07:00
dl-procinfo.h	x86: Set dl_platform and dl_hwcap from CPU features [BZ #21391]	2017-05-03 13:44:35 -07:00
getcontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Implies	NPTL is no longer an add-on!	2014-07-07 09:29:06 -07:00
kernel-features.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ldconfig.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ldd-rewrite.sed
libmvec.abilist	Ignore absolute symbols in ABI tests.	2018-05-04 15:46:32 +00:00
makecontext.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Makefile	ldconfig/x86: Store ISA level in cache and aux cache	2021-01-13 05:51:17 -08:00
register-dump.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setcontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sigaction.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sigaltstack-offsets.sym
sigcontextinfo.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
swapcontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
syscall.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
syscalls.list	Remove p{read,write}{v} and fallocate from x86 auto-generation list	2017-08-22 17:27:18 -03:00
sysdep.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sysdep.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
timer_create.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
timer_delete.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
timer_getoverr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
timer_gettime.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
timer_settime.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-glibc-hwcaps-2.c	x86-64: Update tst-glibc-hwcaps-2.c for x86-64 baseline	2021-01-22 09:37:44 -08:00
ucontext_i.sym	x86-64/CET: Extend ucontext_t to save shadow stack	2018-07-25 06:37:31 -07:00
Versions	Revert {send,sendm,recv,recvm}msg conformance changes	2016-06-10 11:58:16 -03:00
vfork.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
x86-64-isa-level-VALUE.c	ldconfig/x86: Store ISA level in cache and aux cache	2021-01-13 05:51:17 -08:00