diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S b/REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S new file mode 100644 index 0000000000..b70eef0cec --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S @@ -0,0 +1,72 @@ +/* Copyright (C) 2001-2017 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" + +/* __setcontext (const ucontext_t *ucp) + + 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 restore anything + other than the PRESERVED state. */ + +ENTRY(__setcontext) + lr %r1,%r2 + + /* rt_sigprocmask (SIG_SETMASK, &sc->sc_mask, NULL, sigsetsize). */ + la %r2,SIG_SETMASK + la %r3,SC_MASK(%r1) + slr %r4,%r4 + lhi %r5,_NSIG8 + svc SYS_ify(rt_sigprocmask) + + /* Load fpu context. */ + lfpc SC_FPC(%r1) + ld %f0,SC_FPRS(%r1) + ld %f1,SC_FPRS+8(%r1) + ld %f2,SC_FPRS+16(%r1) + ld %f3,SC_FPRS+24(%r1) + ld %f4,SC_FPRS+32(%r1) + ld %f5,SC_FPRS+40(%r1) + ld %f6,SC_FPRS+48(%r1) + ld %f7,SC_FPRS+56(%r1) + ld %f8,SC_FPRS+64(%r1) + ld %f9,SC_FPRS+72(%r1) + ld %f10,SC_FPRS+80(%r1) + ld %f11,SC_FPRS+88(%r1) + ld %f12,SC_FPRS+96(%r1) + ld %f13,SC_FPRS+104(%r1) + ld %f14,SC_FPRS+112(%r1) + ld %f15,SC_FPRS+120(%r1) + + /* Don't touch %a0, used for thread purposes. */ + lam %a1,%a15,SC_ACRS+4(%r1) + + /* Load general purpose registers. */ + lm %r0,%r15,SC_GPRS(%r1) + + /* Return. */ + br %r14 +END(__setcontext) + +weak_alias (__setcontext, setcontext) |