diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S b/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S deleted file mode 100644 index f08d30cd7f..0000000000 --- a/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S +++ /dev/null @@ -1,108 +0,0 @@ -/* Copyright (C) 2002-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). - - 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/>. */ - -#include <sysdep.h> -#include <features.h> - -#include "ucontext_i.h" - -/* __swapcontext (ucontext_t *oucp, const ucontext_t *ucp) - - Saves the machine context in oucp such that when it is activated, - it appears as if __swapcontext() returned again, restores the - machine context in ucp and thereby resumes execution in that - context. - - This implementation is intended to be used for *synchronous* context - switches only. Therefore, it does not have to save anything - other than the PRESERVED state. */ - -ENTRY(__swapcontext) - /* While not part of the ABI a system call never clobbers r0 - or r1. So keeping the values here while calling - rt_sigprocmask is ok. */ - lr %r1,%r2 - lr %r0,%r3 - - /* Store fpu context. */ - stfpc SC_FPC(%r1) - std %f0,SC_FPRS(%r1) - std %f1,SC_FPRS+8(%r1) - std %f2,SC_FPRS+16(%r1) - std %f3,SC_FPRS+24(%r1) - std %f4,SC_FPRS+32(%r1) - std %f5,SC_FPRS+40(%r1) - std %f6,SC_FPRS+48(%r1) - std %f7,SC_FPRS+56(%r1) - std %f8,SC_FPRS+64(%r1) - std %f9,SC_FPRS+72(%r1) - std %f10,SC_FPRS+80(%r1) - std %f11,SC_FPRS+88(%r1) - std %f12,SC_FPRS+96(%r1) - std %f13,SC_FPRS+104(%r1) - std %f14,SC_FPRS+112(%r1) - std %f15,SC_FPRS+120(%r1) - - /* Set __swapcontext return value to 0. */ - slr %r2,%r2 - - /* Store access registers. */ - stam %a0,%a15,SC_ACRS(%r1) - - /* Store general purpose registers. */ - stm %r0,%r15,SC_GPRS(%r1) - - /* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, - sigsetsize). */ - la %r2,SIG_SETMASK - lr %r5,%r0 - la %r3,SC_MASK(%r5) - la %r4,SC_MASK(%r1) - lhi %r5,_NSIG8 - svc SYS_ify(rt_sigprocmask) - - /* Load fpu context. */ - lr %r5,%r0 - lfpc SC_FPC(%r5) - ld %f0,SC_FPRS(%r5) - ld %f1,SC_FPRS+8(%r5) - ld %f2,SC_FPRS+16(%r5) - ld %f3,SC_FPRS+24(%r5) - ld %f4,SC_FPRS+32(%r5) - ld %f5,SC_FPRS+40(%r5) - ld %f6,SC_FPRS+48(%r5) - ld %f7,SC_FPRS+56(%r5) - ld %f8,SC_FPRS+64(%r5) - ld %f9,SC_FPRS+72(%r5) - ld %f10,SC_FPRS+80(%r5) - ld %f11,SC_FPRS+88(%r5) - ld %f12,SC_FPRS+96(%r5) - ld %f13,SC_FPRS+104(%r5) - ld %f14,SC_FPRS+112(%r5) - ld %f15,SC_FPRS+120(%r5) - - /* Don't touch %a0, used for thread purposes. */ - lam %a1,%a15,SC_ACRS+4(%r5) - - /* Load general purpose registers. */ - lm %r0,%r15,SC_GPRS(%r5) - - /* Return. */ - br %r14 -END(__swapcontext) -weak_alias (__swapcontext, swapcontext) |