69 lines
2.6 KiB
ArmAsm
69 lines
2.6 KiB
ArmAsm
/* $NetBSD: start.S,v 1.2 2002/11/16 08:55:05 wdk Exp $ */
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/*
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* Copyright (c) 2000 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 Wayne Knowles
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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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#include <mips/asm.h>
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#include <mips/cpuregs.h>
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#include <machine/prom.h>
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LEAF(start)
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.set noreorder
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#ifdef __GP_SUPPORT__
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la gp, _C_LABEL (_gp)
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#endif
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la sp, start - CALLFRAME_SIZ
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sw zero, CALLFRAME_RA(sp) # clear ra for debugger
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sw zero, CALLFRAME_SP(sp) # clear fp for debugger
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move s0, a0 # save argc
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move s1, a1 # save argv
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la a0, _C_LABEL (edata) # clear BSS
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move a1, zero
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la a2, _C_LABEL (end)
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jal _C_LABEL(memset) # memset(edata, 0, end - edata)
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subu a2, a2, a0
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move a0, s0 # restore argc
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jal _C_LABEL(main) # main(argc, argv)
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move a1, s1 # restore argv
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XLEAF(_rtt)
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la t9, _C_LABEL(prom_restart) # restart...
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j t9
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move a0, zero
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END(start)
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