mirror of
https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
synced 2025-08-10 14:39:47 -04:00
123 lines
4.7 KiB
ArmAsm
123 lines
4.7 KiB
ArmAsm
/* $NetBSD: start.S,v 1.5 2011/02/20 07:52:43 matt Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1999 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jonathan Stone, Michael Hitch and Simon Burge.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Ralph Campbell.
|
|
*
|
|
* 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.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*
|
|
* @(#)start.s 8.2 (Berkeley) 1/21/94
|
|
*/
|
|
|
|
/*
|
|
* start.s -
|
|
*
|
|
* Contains code that is the first executed at boot time.
|
|
*
|
|
* Copyright (C) 1989 Digital Equipment Corporation.
|
|
* Permission to use, copy, modify, and distribute this software and
|
|
* its documentation for any purpose and without fee is hereby granted,
|
|
* provided that the above copyright notice appears in all copies.
|
|
* Digital Equipment Corporation makes no representations about the
|
|
* suitability of this software for any purpose. It is provided "as is"
|
|
* without express or implied warranty.
|
|
*
|
|
* from: Header: /sprite/src/boot/decprom/ds3100.md/RCS/start.s,
|
|
* v 1.1 90/02/16 16:19:39 shirriff Exp SPRITE (DECWRL)
|
|
*/
|
|
|
|
#include <mips/asm.h>
|
|
#include <mips/cpuregs.h>
|
|
|
|
#include "assym.h"
|
|
|
|
.globl start
|
|
start:
|
|
.set noreorder
|
|
#ifdef __GP_SUPPORT__
|
|
la gp, _C_LABEL (_gp)
|
|
#endif
|
|
addi sp, -CALLFRAME_SIZ
|
|
sw ra, CALLFRAME_RA(sp) # save ra
|
|
sw a0, 0(sp) # save argc
|
|
sw a1, 4(sp) # save argv
|
|
sw a2, 8(sp) # save envp
|
|
|
|
la v0, 0x80001000 # ARCBIOS_SPB
|
|
lw v0, 8 * 4(v0) # FirmwareVector
|
|
sw v0, _C_LABEL(ARCBIOS) # save ARCBIOS
|
|
lw v0, 136(v0) # (*ARCBIOS->FlushAllCache)()
|
|
jalr v0
|
|
nop
|
|
la a0, _C_LABEL (edata) # clear BSS
|
|
move a1, zero
|
|
la a2, _C_LABEL (end)
|
|
jal _C_LABEL(memset) # memset(edata, 0, end - edata)
|
|
subu a2, a2, a0
|
|
lw a0, 0(sp) # restore argc
|
|
lw a1, 4(sp) # restore argv
|
|
jal _C_LABEL(main) # main(argc, argv, envp)
|
|
lw a2, 8(sp) # restore envp
|
|
lw ra, CALLFRAME_RA(sp) # restore RA
|
|
j ra
|
|
addi sp, CALLFRAME_SIZ
|
|
|
|
.data
|
|
.global ARCBIOS
|
|
ARCBIOS:
|
|
.data 0
|