Szabolcs Nagy fddbd7c0ef aarch64: fix swapcontext for BTI ... setcontext returns to the specified context via an indirect jump, so there should be a BTI j. In case of getcontext (and all other returns_twice functions) the compiler adds BTI j at the call site, but swapcontext is a normal c call that is currently not handled specially by the compiler. So we change swapcontext such that the saved context returns to a local address that has BTI j and then swapcontext returns to the caller via a normal RET. For this we save the original return address in the slot for x1 of the context because x1 need not be preserved by swapcontext but it is restored when the context saved by swapcontext is resumed. The alternative fix (which is done on x86) would make swapcontext special in the compiler so BTI j is emitted at call sites, on x86 there is an indirect_return attribute for this, on AArch64 we would have to use returns_twice. It was decided against because such fix may need user code updates: the attribute has to be added when swapcontext is called via a function pointer and it breaks always_inline functions with swapcontext. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>		2020-07-08 15:02:37 +01:00
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bits	Linux: Perform rseq registration at C startup and thread creation	2020-07-06 10:21:16 +02:00
sys	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
__read_tp.S	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
arch-syscall.h	Update syscall lists for Linux 5.6.	2020-04-03 18:07:55 +00:00
c++-types.data	AArch64: Consolidate nptl/ subdirectories under linux/...	2014-06-26 09:29:24 -07:00
clone.S	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
configure	LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes	2018-01-25 17:20:28 +01:00
configure.ac	Refactor handling of /lib64 etc. cases, move out of sysdeps/gnu/configure.ac.	2014-07-17 14:35:48 +00:00
cpu-features.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
cpu-features.h	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
dl-cache.h	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
dl-procinfo.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
dl-procinfo.h	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
dl-static.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
getcontext.S	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
gettimeofday.c	linux: Consolidate Linux gettimeofday	2020-01-03 11:21:50 -03:00
Implies	NPTL is no longer an add-on!	2014-07-07 09:29:06 -07:00
ioctl.S	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
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.	2020-01-01 00:14:33 +00:00
kernel-features.h	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
ld.abilist	ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486]	2020-02-15 11:01:23 +01:00
ldconfig.h	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
ldsodefs.h	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
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-__read_tp.S	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
libc-start.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
libc.abilist	string: Add strerrorname_np and strerrordesc_np	2020-07-07 15:02:57 -03:00
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	aarch64: Accept PLT calls to __getauxval within libc.so	2020-05-12 12:51:10 +02:00
makecontext.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
Makefile	elf: Move vDSO setup to rtld (BZ#24967)	2020-01-03 11:22:07 -03:00
readelflib.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
setcontext.S	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
shlib-versions	Remove configuration name patterns from shlib-versions.	2014-09-12 12:28:47 +00:00
sigaction.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
sigcontextinfo.h	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
swapcontext.S	aarch64: fix swapcontext for BTI	2020-07-08 15:02:37 +01:00
syscall.S	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
sysconf.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
sysdep.c	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
sysdep.h	linux: Remove INTERNAL_SYSCALL_DECL	2020-02-14 21:12:45 -03:00
ucontext_i.sym	aarch64: Revert the change of the __reserved member of mcontext_t	2018-01-24 11:53:30 +00:00
ucontext-internal.h	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
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.	2020-01-01 00:14:33 +00:00