start.S revision 1.2.10.2
1 1.2.10.2 skrll /* $NetBSD: start.S,v 1.2.10.2 2005/11/10 13:55:09 skrll Exp $ */ 2 1.2.10.2 skrll 3 1.2.10.2 skrll /*- 4 1.2.10.2 skrll * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 1.2.10.2 skrll * All rights reserved. 6 1.2.10.2 skrll * 7 1.2.10.2 skrll * This code is derived from software contributed to The NetBSD Foundation 8 1.2.10.2 skrll * by Jonathan Stone, Michael Hitch and Simon Burge. 9 1.2.10.2 skrll * 10 1.2.10.2 skrll * Redistribution and use in source and binary forms, with or without 11 1.2.10.2 skrll * modification, are permitted provided that the following conditions 12 1.2.10.2 skrll * are met: 13 1.2.10.2 skrll * 1. Redistributions of source code must retain the above copyright 14 1.2.10.2 skrll * notice, this list of conditions and the following disclaimer. 15 1.2.10.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.10.2 skrll * notice, this list of conditions and the following disclaimer in the 17 1.2.10.2 skrll * documentation and/or other materials provided with the distribution. 18 1.2.10.2 skrll * 3. All advertising materials mentioning features or use of this software 19 1.2.10.2 skrll * must display the following acknowledgement: 20 1.2.10.2 skrll * This product includes software developed by the NetBSD 21 1.2.10.2 skrll * Foundation, Inc. and its contributors. 22 1.2.10.2 skrll * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2.10.2 skrll * contributors may be used to endorse or promote products derived 24 1.2.10.2 skrll * from this software without specific prior written permission. 25 1.2.10.2 skrll * 26 1.2.10.2 skrll * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2.10.2 skrll * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2.10.2 skrll * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2.10.2 skrll * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2.10.2 skrll * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2.10.2 skrll * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2.10.2 skrll * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2.10.2 skrll * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2.10.2 skrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2.10.2 skrll * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2.10.2 skrll * POSSIBILITY OF SUCH DAMAGE. 37 1.2.10.2 skrll */ 38 1.2.10.2 skrll 39 1.2.10.2 skrll /* 40 1.2.10.2 skrll * Copyright (c) 1992, 1993 41 1.2.10.2 skrll * The Regents of the University of California. All rights reserved. 42 1.2.10.2 skrll * 43 1.2.10.2 skrll * This code is derived from software contributed to Berkeley by 44 1.2.10.2 skrll * Ralph Campbell. 45 1.2.10.2 skrll * 46 1.2.10.2 skrll * Redistribution and use in source and binary forms, with or without 47 1.2.10.2 skrll * modification, are permitted provided that the following conditions 48 1.2.10.2 skrll * are met: 49 1.2.10.2 skrll * 1. Redistributions of source code must retain the above copyright 50 1.2.10.2 skrll * notice, this list of conditions and the following disclaimer. 51 1.2.10.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 52 1.2.10.2 skrll * notice, this list of conditions and the following disclaimer in the 53 1.2.10.2 skrll * documentation and/or other materials provided with the distribution. 54 1.2.10.2 skrll * 3. Neither the name of the University nor the names of its contributors 55 1.2.10.2 skrll * may be used to endorse or promote products derived from this software 56 1.2.10.2 skrll * without specific prior written permission. 57 1.2.10.2 skrll * 58 1.2.10.2 skrll * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 1.2.10.2 skrll * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 1.2.10.2 skrll * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 1.2.10.2 skrll * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 1.2.10.2 skrll * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 1.2.10.2 skrll * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 1.2.10.2 skrll * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 1.2.10.2 skrll * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 1.2.10.2 skrll * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 1.2.10.2 skrll * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 1.2.10.2 skrll * SUCH DAMAGE. 69 1.2.10.2 skrll * 70 1.2.10.2 skrll * @(#)start.s 8.2 (Berkeley) 1/21/94 71 1.2.10.2 skrll */ 72 1.2.10.2 skrll 73 1.2.10.2 skrll /* 74 1.2.10.2 skrll * start.s - 75 1.2.10.2 skrll * 76 1.2.10.2 skrll * Contains code that is the first executed at boot time. 77 1.2.10.2 skrll * 78 1.2.10.2 skrll * Copyright (C) 1989 Digital Equipment Corporation. 79 1.2.10.2 skrll * Permission to use, copy, modify, and distribute this software and 80 1.2.10.2 skrll * its documentation for any purpose and without fee is hereby granted, 81 1.2.10.2 skrll * provided that the above copyright notice appears in all copies. 82 1.2.10.2 skrll * Digital Equipment Corporation makes no representations about the 83 1.2.10.2 skrll * suitability of this software for any purpose. It is provided "as is" 84 1.2.10.2 skrll * without express or implied warranty. 85 1.2.10.2 skrll * 86 1.2.10.2 skrll * from: Header: /sprite/src/boot/decprom/ds3100.md/RCS/start.s, 87 1.2.10.2 skrll * v 1.1 90/02/16 16:19:39 shirriff Exp SPRITE (DECWRL) 88 1.2.10.2 skrll */ 89 1.2.10.2 skrll 90 1.2.10.2 skrll #include <mips/asm.h> 91 1.2.10.2 skrll #include <mips/cpuregs.h> 92 1.2.10.2 skrll 93 1.2.10.2 skrll .globl start 94 1.2.10.2 skrll start: 95 1.2.10.2 skrll .set noreorder 96 1.2.10.2 skrll #ifdef __GP_SUPPORT__ 97 1.2.10.2 skrll la gp, _C_LABEL (_gp) 98 1.2.10.2 skrll #endif 99 1.2.10.2 skrll addi sp, -CALLFRAME_SIZ 100 1.2.10.2 skrll sw ra, CALLFRAME_RA(sp) # save ra 101 1.2.10.2 skrll sw a0, 0(sp) # save argc 102 1.2.10.2 skrll sw a1, 4(sp) # save argv 103 1.2.10.2 skrll sw a2, 8(sp) # save envp 104 1.2.10.2 skrll 105 1.2.10.2 skrll la v0, 0x80001000 # ARCBIOS_SPB 106 1.2.10.2 skrll lw v0, 8 * 4(v0) # FirmwareVector 107 1.2.10.2 skrll sw v0, _C_LABEL(ARCBIOS) # save ARCBIOS 108 1.2.10.2 skrll lw v0, 136(v0) # (*ARCBIOS->FlushAllCache)() 109 1.2.10.2 skrll jalr v0 110 1.2.10.2 skrll nop 111 1.2.10.2 skrll la a0, _C_LABEL (edata) # clear BSS 112 1.2.10.2 skrll move a1, zero 113 1.2.10.2 skrll la a2, _C_LABEL (end) 114 1.2.10.2 skrll jal _C_LABEL(memset) # memset(edata, 0, end - edata) 115 1.2.10.2 skrll subu a2, a2, a0 116 1.2.10.2 skrll lw a0, 0(sp) # restore argc 117 1.2.10.2 skrll lw a1, 4(sp) # restore argv 118 1.2.10.2 skrll jal _C_LABEL(main) # main(argc, argv, envp) 119 1.2.10.2 skrll lw a2, 8(sp) # restore envp 120 1.2.10.2 skrll lw ra, CALLFRAME_RA(sp) # restore RA 121 1.2.10.2 skrll j ra 122 1.2.10.2 skrll addi sp, CALLFRAME_SIZ 123 1.2.10.2 skrll 124 1.2.10.2 skrll .data 125 1.2.10.2 skrll .global ARCBIOS 126 1.2.10.2 skrll ARCBIOS: 127 1.2.10.2 skrll .data 0 128
Indexes created Sat Oct 25 16:10:12 GMT 2025