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glibc/sysdeps/unix/sysv/linux/hppa
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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 Correct hppa EFD_NONBLOCK, IN_NONBLOCK, SFD_NONBLOCK and TFD_NONBLOCK defines. 2021-02-19 17:08:47 +00:00
sys Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
____longjmp_chk.c 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 HPPA: Add c++-types.data. 2014-09-07 22:09:49 -04:00
clone.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
errlist-compat.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
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
jmp_buf-macros.h Add jmp_buf-macros.h 2017-11-09 05:10:03 -08:00
kernel_stat.h linux: Define STAT64_IS_KERNEL_STAT64 2020-09-11 14:35:11 -03:00
kernel-features.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
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 Finish move of clock_* functions to libc. [BZ #24959] 2019-09-04 14:39:38 +02:00
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 elf: Add elf/check-wx-segment, a test for the presence of WX segments 2020-03-02 14:25:20 +01:00
setcontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
shlib-versions Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
sigcontextinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
struct_kernel_msqid64_ds.h sysv: linux: Add 64-bit time_t variant for msgctl 2020-07-09 12:05:40 -03:00
struct_kernel_semid64_ds.h sysv: linux: Add 64-bit time_t variant for semctl 2020-07-09 12:05:35 -03:00
struct_kernel_shmid64_ds.h sysv: linux: Add 64-bit time_t variant for shmctl 2020-07-09 12:05:47 -03:00
swapcontext.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
syscall.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
syscalls.list Consolidate Linux send implementation 2017-03-09 15:22:06 +01:00
sysdep.c 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
ucontext_i.sym Relocate hppa from ports to libc. 2014-04-29 04:20:39 -04:00
Versions signal: Move sys_errlist to a compat symbol 2020-07-07 14:10:58 -03:00