72 lines
2.6 KiB
ArmAsm
72 lines
2.6 KiB
ArmAsm
/* $NetBSD: startprog.S,v 1.2 1999/03/25 04:14:03 simonb Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jonathan Stone, Michael Hitch and Simon Burge.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* startprog(entry, stack, argc, argv, prom_magic, prom_ptr, bi_magic, bi_ptr);
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*
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* load new stack pointer, then call
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* entry(argc, argv, prom_magic, prom_ptr, bi_magic, bi_ptr);
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*/
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#include <mips/asm.h>
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LEAF(startprog)
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subu sp,sp,32
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addu t0,a1,-CALLFRAME_SIZ # new stack value
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move t1,a0
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move a0,a2
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move a1,a3
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lw a2,48(sp) # load everything from old stack we need
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lw a3,52(sp)
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lw v0,56(sp)
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lw v1,60(sp)
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move sp,t0 # new stack pointer
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sw ra,24(sp)
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sw v0,16(sp)
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sw v1,20(sp)
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jal ra,t1
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nop # BDslot
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lw ra,24(sp) # should not get back here!
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j ra
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addu sp,sp,32
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END(startprog)
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