/* $NetBSD: contextspfunc.S,v 1.2 2025/04/21 12:06:08 riastradh Exp $ */ /*- * Copyright (c) 2025 The NetBSD Foundation, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #define _LOCORE #include RCSID("$NetBSD: contextspfunc.S,v 1.2 2025/04/21 12:06:08 riastradh Exp $") /* * contextspfunc() * * makecontext(3) function. Store the stack pointer on entry at * the global variable contextsp and call contextdone. */ LEAF_ENTRY(contextspfunc) addil LT%_C_LABEL(contextdone), %r19 /* r20 := contextdone */ ldw RT%_C_LABEL(contextdone)(%r1), %r20 addil LT%_C_LABEL(contextsp), %r19 /* r21 := &contextsp */ ldw RT%_C_LABEL(contextsp)(%r1), %r21 bv %r0(%r20) /* jump to contextdone */ stw %sp, 0(%r21) /* contextsp := sp */ EXIT(contextspfunc)