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glibc/sysdeps/unix/sysv/linux/nios2
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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 linux: Set LFS statfs as default 2021-02-11 07:58:09 -03:00
sys Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
arch-syscall.h Update syscall lists for Linux 5.11. 2021-02-19 21:16:27 +00:00
atomic-machine.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
c++-types.data Commit nios2 port to master. 2015-01-17 22:29:12 -08:00
cacheflush.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
clone.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
configure glibc 2.21 pre-release update. 2015-02-05 23:14:38 -05:00
configure.ac Commit nios2 port to master. 2015-01-17 22:29:12 -08:00
getcontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Implies Commit nios2 port to master. 2015-01-17 22:29:12 -08:00
jmp_buf-macros.h Add jmp_buf-macros.h 2017-11-09 05:10:03 -08:00
kernel_rt_sigframe.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
kernel_sigaction.h m68k: Fix sigaction kernel definition (BZ #23960) 2018-12-18 16:45:10 -02:00
kernel_stat.h linux: Set default kernel_stat.h to LFS 2021-02-11 07:58:05 -03:00
ld.abilist ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486] 2020-02-15 11:01:23 +01:00
libanl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libBrokenLocale.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libc.abilist Reduce the statically linked startup code [BZ #23323] 2021-02-25 12:13:02 +01:00
libcrypt.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libdl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libm.abilist New exp10f version without SVID compat wrapper 2020-06-19 12:08:47 -03:00
libnsl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libpthread.abilist nptl: Move pthread_gettattr_np into libc 2020-05-20 20:27:49 +02:00
libresolv.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
librt.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libthread_db.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libutil.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
localplt.data ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486] 2020-02-15 11:01:23 +01:00
makecontext.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile nios2: Work around backend bug triggered by csu/libc-tls.c (GCC PR 92499) 2019-11-14 12:39:49 +01:00
setcontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
shlib-versions Commit nios2 port to master. 2015-01-17 22:29:12 -08:00
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
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
ucontext_i.sym Commit nios2 port to master. 2015-01-17 22:29:12 -08:00
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