1 1.2 riastrad /* $NetBSD: contextspfunc.S,v 1.2 2025/04/21 12:06:08 riastradh Exp $ */ 2 1.1 riastrad 3 1.1 riastrad /*- 4 1.1 riastrad * Copyright (c) 2025 The NetBSD Foundation, Inc. 5 1.1 riastrad * All rights reserved. 6 1.1 riastrad * 7 1.1 riastrad * Redistribution and use in source and binary forms, with or without 8 1.1 riastrad * modification, are permitted provided that the following conditions 9 1.1 riastrad * are met: 10 1.1 riastrad * 1. Redistributions of source code must retain the above copyright 11 1.1 riastrad * notice, this list of conditions and the following disclaimer. 12 1.1 riastrad * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 riastrad * notice, this list of conditions and the following disclaimer in the 14 1.1 riastrad * documentation and/or other materials provided with the distribution. 15 1.1 riastrad * 16 1.1 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.1 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.1 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.1 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.1 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.1 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.1 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.1 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.1 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.1 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.1 riastrad * POSSIBILITY OF SUCH DAMAGE. 27 1.1 riastrad */ 28 1.1 riastrad 29 1.1 riastrad #define _LOCORE 30 1.1 riastrad 31 1.1 riastrad #include <machine/asm.h> 32 1.1 riastrad 33 1.2 riastrad RCSID("$NetBSD: contextspfunc.S,v 1.2 2025/04/21 12:06:08 riastradh Exp $") 34 1.1 riastrad 35 1.1 riastrad /* 36 1.1 riastrad * contextspfunc() 37 1.1 riastrad * 38 1.1 riastrad * makecontext(3) function. Store the stack pointer on entry at 39 1.1 riastrad * the global variable contextsp and call contextdone. 40 1.1 riastrad */ 41 1.1 riastrad LEAF_ENTRY(contextspfunc) 42 1.2 riastrad addil LT%_C_LABEL(contextdone), %r19 /* r20 := contextdone */ 43 1.2 riastrad ldw RT%_C_LABEL(contextdone)(%r1), %r20 44 1.2 riastrad addil LT%_C_LABEL(contextsp), %r19 /* r21 := &contextsp */ 45 1.2 riastrad ldw RT%_C_LABEL(contextsp)(%r1), %r21 46 1.2 riastrad bv %r0(%r20) /* jump to contextdone */ 47 1.2 riastrad stw %sp, 0(%r21) /* contextsp := sp */ 48 1.1 riastrad EXIT(contextspfunc) 49
Indexes created Sun Sep 21 20:09:37 GMT 2025