diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/s390-64/clone.S')
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-64/clone.S | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S deleted file mode 100644 index daf8a58326..0000000000 --- a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S +++ /dev/null @@ -1,66 +0,0 @@ -/* Wrapper around clone system call. 64 bit S/390 version. - Copyright (C) 2001-2017 Free Software Foundation, Inc. - Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -/* clone is even more special than fork as it mucks with stacks - and invokes a function in the right context after its all over. */ - -#include <sysdep.h> -#include <tls.h> -#define _ERRNO_H 1 -#include <bits/errno.h> - -/* int __clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg, - pid_t *parent_tid, void *tls, pid_t *child_tid); */ -/* sys_clone (void *child_stack, unsigned long flags, - pid_t *parent_tid, pid_t *child_tid, void *tls); */ - - .text -ENTRY(__clone) - stg %r6,48(%r15) /* store %r6 to save area */ - cfi_offset (%r6,-112) - lgr %r0,%r5 /* move *arg out of the way */ - ltgr %r1,%r2 /* check fn and move to %r1 */ - jz error /* no NULL function pointers */ - ltgr %r2,%r3 /* check child_stack and move to %r2 */ - jz error /* no NULL stack pointers */ - lgr %r3,%r4 /* move flags to %r3 */ - lgr %r4,%r6 /* move parent_tid to %r4 */ - lg %r5,168(%r15) /* load child_tid from stack */ - lg %r6,160(%r15) /* load tls from stack */ - svc SYS_ify(clone) - ltgr %r2,%r2 /* check return code */ - jz thread_start - lg %r6,48(%r15) /* restore %r6 */ - jgm SYSCALL_ERROR_LABEL - br %r14 -error: - lghi %r2,-EINVAL - jg SYSCALL_ERROR_LABEL -PSEUDO_END (__clone) - -thread_start: - /* fn is in gpr 1, arg in gpr 0 */ - lgr %r2,%r0 /* set first parameter to void *arg */ - aghi %r15,-160 /* make room on the stack for the save area */ - xc 0(8,%r15),0(%r15) - basr %r14,%r1 /* jump to fn */ - DO_CALL (exit, 1) - -libc_hidden_def (__clone) -weak_alias (__clone, clone) |