glibc/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S
Andreas Jaeger 41bdb6e20c Update to LGPL v2.1.
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
2001-07-06 04:58:11 +00:00

70 lines
2.1 KiB
ArmAsm

/* Copyright (C) 2001 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#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 %r5,%r2
/* sigprocmask (SIG_SETMASK, &sc->sc_mask, NULL). */
la %r2,SIG_BLOCK
la %r3,SC_MASK(%r5)
slr %r4,%r4
svc SYS_ify(rt_sigprocmask)
/* Load fpu context. */
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)
/* Load general purpose registers. */
lm %r0,%r15,SC_GPRS(%r5)
/* Return. */
br %r14
END(__setcontext)
weak_alias(__setcontext, setcontext)