contextspfunc.S revision 1.2 
11.2Suwe/*	$NetBSD: contextspfunc.S,v 1.2 2025/05/07 16:26:47 uwe Exp $	*/
21.1Sriastrad
31.1Sriastrad/*-
41.1Sriastrad * Copyright (c) 2025 The NetBSD Foundation, Inc.
51.1Sriastrad * All rights reserved.
61.1Sriastrad *
71.1Sriastrad * Redistribution and use in source and binary forms, with or without
81.1Sriastrad * modification, are permitted provided that the following conditions
91.1Sriastrad * are met:
101.1Sriastrad * 1. Redistributions of source code must retain the above copyright
111.1Sriastrad *    notice, this list of conditions and the following disclaimer.
121.1Sriastrad * 2. Redistributions in binary form must reproduce the above copyright
131.1Sriastrad *    notice, this list of conditions and the following disclaimer in the
141.1Sriastrad *    documentation and/or other materials provided with the distribution.
151.1Sriastrad *
161.1Sriastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
171.1Sriastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
181.1Sriastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
191.1Sriastrad * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
201.1Sriastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
211.1Sriastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
221.1Sriastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
231.1Sriastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
241.1Sriastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
251.1Sriastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
261.1Sriastrad * POSSIBILITY OF SUCH DAMAGE.
271.1Sriastrad */
281.1Sriastrad
291.1Sriastrad#define	_LOCORE
301.1Sriastrad
311.1Sriastrad#include <machine/asm.h>
321.1Sriastrad
331.2SuweRCSID("$NetBSD: contextspfunc.S,v 1.2 2025/05/07 16:26:47 uwe Exp $")
341.1Sriastrad
351.1Sriastrad/*
361.1Sriastrad * contextspfunc()
371.1Sriastrad *
381.1Sriastrad *	makecontext(3) function.  Store the stack pointer on entry at
391.1Sriastrad *	the global variable contextsp and call contextdone.
401.1Sriastrad */
411.1SriastradENTRY(contextspfunc)
421.2Suwe0:	GOT_INIT(r0, .Lgot)
431.1Sriastrad	mov	r1, sp
441.1Sriastrad	GOT_GET(r2, r0, .Lcontextsp)
451.1Sriastrad	str	r1, [r2]
461.1Sriastrad	b	PLT_SYM(_C_LABEL(contextdone))
471.1Sriastrad
481.2Suwe	GOT_INITSYM(.Lgot, 0b)
491.1Sriastrad.Lcontextsp:
501.1Sriastrad	.word	GOT_SYM(contextsp)
511.1SriastradEND(contextspfunc)
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