glibc/sysdeps/unix
Stefan Liebler e57d8fc97b S390: Always use svc 0
On s390x syscalls are triggered by svc instruction. One can
pass the syscall number encoded in the instruction "svc 123"
or by storing it in r1:
lghi r1,123
svc 0

If the syscall number is encoded in the instruction, this can
cause broken syscall restarts.  Therefore this patch is now just
passing the syscall number in r1.

See also kernel-commit:
"s390/signal: switch to using vdso for sigreturn and syscall restart"
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/arch/s390/[%e2%80%a6]call.c?h=v6.0-rc1&id=df29a7440c4b5c65765c8f60396b3b13063e24e9

As information, the "svc 0" feature was introduced in kernel 2.5.62:
commit b5aad611393ef2e132e3648fa4c6e56a9cfa8708
2022-08-30 10:54:46 +02:00
..
alpha Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
arm Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
bsd posix: Add terminal control setting support for posix_spawn 2022-01-25 14:07:53 -03:00
i386 Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
inet Remove obsolete, never-implemented XSI STREAMS declarations 2019-03-14 15:44:15 +01:00
mips Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
powerpc Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
sh Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
sysv/linux S390: Always use svc 0 2022-08-30 10:54:46 +02:00
x86_64 Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
confstr.h
get_child_max.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
getlogin_r.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
getlogin.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
getpagesize.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
grantpt.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
ifreq.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
Implies
make-syscalls.sh Add SYSCALL_ULONG_ARG_[12] to pass long to syscall [BZ #25810] 2020-04-29 05:35:34 -07:00
Makefile Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
setxid.h
sockatmark.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
syscall-template.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
syscall.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
syscalls.list misc: Add time64 alias for ioctl 2021-07-21 11:58:09 +02:00
sysdep.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00