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
..
be	sh: Add sh4 fpu Implies folder	2020-11-27 09:29:35 -03:00
bits	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
le	sh: Add sh4 fpu Implies folder	2020-11-27 09:29:35 -03:00
nofpu	Add sysdeps/ieee754/soft-fp.	2017-12-12 23:35:21 +00:00
nptl	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sh3	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sh4	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
____longjmp_chk.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
_mcount.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
abort-instr.h
bsd-_setjmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
bsd-setjmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
configure
configure.ac
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-machine.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-trampoline.S	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
fpu_control.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
gccframe.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Implies	Remove sysdeps/sh/soft-fp directory.	2018-05-23 20:05:31 +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
ldbl-classify-compat.h	Move LDBL_CLASSIFY_COMPAT to its own header.	2018-02-01 21:01:00 +00:00
ldsodefs.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	sh: Update libm-tests-ulps	2021-01-28 14:05:14 -03:00
libm-test-ulps-name
linkmap.h
machine-gmon.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Makefile	Enable unwind info in libc-start.c and backtrace.c	2017-09-19 15:07:58 +01:00
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
memusage.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
preconfigure	sh: Split BE/LE abilist	2019-08-29 09:58:31 -03:00
preconfigure.ac	sh: Split BE/LE abilist	2019-08-29 09:58:31 -03:00
sfp-machine.h	Remove sysdeps/sh/soft-fp directory.	2018-05-23 20:05:31 +00:00
sotruss-lib.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stackguard-macros.h
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
strlen.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
tininess.h
tls-macros.h
tst-audit.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00