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/* $NetBSD: contextspfunc.S,v 1.2 2025/05/07 16:26:47 uwe 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 <machine/asm.h>
RCSID("$NetBSD: contextspfunc.S,v 1.2 2025/05/07 16:26:47 uwe Exp $")
/*
* contextspfunc()
*
* makecontext(3) function. Store the stack pointer on entry at
* the global variable contextsp and call contextdone.
*/
ENTRY(contextspfunc)
0: GOT_INIT(r0, .Lgot)
mov r1, sp
GOT_GET(r2, r0, .Lcontextsp)
str r1, [r2]
b PLT_SYM(_C_LABEL(contextdone))
GOT_INITSYM(.Lgot, 0b)
.Lcontextsp:
.word GOT_SYM(contextsp)
END(contextspfunc)
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