start.S revision 1.2.2.2
1 1.2.2.2 kent /* $NetBSD: start.S,v 1.2.2.2 2005/04/29 11:28:02 kent Exp $ */ 2 1.2.2.2 kent 3 1.2.2.2 kent /*- 4 1.2.2.2 kent * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 1.2.2.2 kent * All rights reserved. 6 1.2.2.2 kent * 7 1.2.2.2 kent * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 kent * by Jonathan Stone, Michael Hitch and Simon Burge. 9 1.2.2.2 kent * 10 1.2.2.2 kent * Redistribution and use in source and binary forms, with or without 11 1.2.2.2 kent * modification, are permitted provided that the following conditions 12 1.2.2.2 kent * are met: 13 1.2.2.2 kent * 1. Redistributions of source code must retain the above copyright 14 1.2.2.2 kent * notice, this list of conditions and the following disclaimer. 15 1.2.2.2 kent * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 kent * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 kent * documentation and/or other materials provided with the distribution. 18 1.2.2.2 kent * 3. All advertising materials mentioning features or use of this software 19 1.2.2.2 kent * must display the following acknowledgement: 20 1.2.2.2 kent * This product includes software developed by the NetBSD 21 1.2.2.2 kent * Foundation, Inc. and its contributors. 22 1.2.2.2 kent * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2.2.2 kent * contributors may be used to endorse or promote products derived 24 1.2.2.2 kent * from this software without specific prior written permission. 25 1.2.2.2 kent * 26 1.2.2.2 kent * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2.2.2 kent * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2.2.2 kent * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2.2.2 kent * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2.2.2 kent * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2.2.2 kent * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2.2.2 kent * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2.2.2 kent * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2.2.2 kent * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2.2.2 kent * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2.2.2 kent * POSSIBILITY OF SUCH DAMAGE. 37 1.2.2.2 kent */ 38 1.2.2.2 kent 39 1.2.2.2 kent /* 40 1.2.2.2 kent * Copyright (c) 1992, 1993 41 1.2.2.2 kent * The Regents of the University of California. All rights reserved. 42 1.2.2.2 kent * 43 1.2.2.2 kent * This code is derived from software contributed to Berkeley by 44 1.2.2.2 kent * Ralph Campbell. 45 1.2.2.2 kent * 46 1.2.2.2 kent * Redistribution and use in source and binary forms, with or without 47 1.2.2.2 kent * modification, are permitted provided that the following conditions 48 1.2.2.2 kent * are met: 49 1.2.2.2 kent * 1. Redistributions of source code must retain the above copyright 50 1.2.2.2 kent * notice, this list of conditions and the following disclaimer. 51 1.2.2.2 kent * 2. Redistributions in binary form must reproduce the above copyright 52 1.2.2.2 kent * notice, this list of conditions and the following disclaimer in the 53 1.2.2.2 kent * documentation and/or other materials provided with the distribution. 54 1.2.2.2 kent * 3. Neither the name of the University nor the names of its contributors 55 1.2.2.2 kent * may be used to endorse or promote products derived from this software 56 1.2.2.2 kent * without specific prior written permission. 57 1.2.2.2 kent * 58 1.2.2.2 kent * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 1.2.2.2 kent * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 1.2.2.2 kent * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 1.2.2.2 kent * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 1.2.2.2 kent * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 1.2.2.2 kent * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 1.2.2.2 kent * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 1.2.2.2 kent * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 1.2.2.2 kent * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 1.2.2.2 kent * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 1.2.2.2 kent * SUCH DAMAGE. 69 1.2.2.2 kent * 70 1.2.2.2 kent * @(#)start.s 8.2 (Berkeley) 1/21/94 71 1.2.2.2 kent */ 72 1.2.2.2 kent 73 1.2.2.2 kent /* 74 1.2.2.2 kent * start.s - 75 1.2.2.2 kent * 76 1.2.2.2 kent * Contains code that is the first executed at boot time. 77 1.2.2.2 kent * 78 1.2.2.2 kent * Copyright (C) 1989 Digital Equipment Corporation. 79 1.2.2.2 kent * Permission to use, copy, modify, and distribute this software and 80 1.2.2.2 kent * its documentation for any purpose and without fee is hereby granted, 81 1.2.2.2 kent * provided that the above copyright notice appears in all copies. 82 1.2.2.2 kent * Digital Equipment Corporation makes no representations about the 83 1.2.2.2 kent * suitability of this software for any purpose. It is provided "as is" 84 1.2.2.2 kent * without express or implied warranty. 85 1.2.2.2 kent * 86 1.2.2.2 kent * from: Header: /sprite/src/boot/decprom/ds3100.md/RCS/start.s, 87 1.2.2.2 kent * v 1.1 90/02/16 16:19:39 shirriff Exp SPRITE (DECWRL) 88 1.2.2.2 kent */ 89 1.2.2.2 kent 90 1.2.2.2 kent #include <mips/asm.h> 91 1.2.2.2 kent #include <mips/cpuregs.h> 92 1.2.2.2 kent 93 1.2.2.2 kent .globl start 94 1.2.2.2 kent start: 95 1.2.2.2 kent .set noreorder 96 1.2.2.2 kent #ifdef __GP_SUPPORT__ 97 1.2.2.2 kent la gp, _C_LABEL (_gp) 98 1.2.2.2 kent #endif 99 1.2.2.2 kent addi sp, -CALLFRAME_SIZ 100 1.2.2.2 kent sw ra, CALLFRAME_RA(sp) # save ra 101 1.2.2.2 kent sw a0, 0(sp) # save argc 102 1.2.2.2 kent sw a1, 4(sp) # save argv 103 1.2.2.2 kent sw a2, 8(sp) # save envp 104 1.2.2.2 kent 105 1.2.2.2 kent la v0, 0x80001000 # ARCBIOS_SPB 106 1.2.2.2 kent lw v0, 8 * 4(v0) # FirmwareVector 107 1.2.2.2 kent sw v0, _C_LABEL(ARCBIOS) # save ARCBIOS 108 1.2.2.2 kent lw v0, 136(v0) # (*ARCBIOS->FlushAllCache)() 109 1.2.2.2 kent jalr v0 110 1.2.2.2 kent nop 111 1.2.2.2 kent la a0, _C_LABEL (edata) # clear BSS 112 1.2.2.2 kent move a1, zero 113 1.2.2.2 kent la a2, _C_LABEL (end) 114 1.2.2.2 kent jal _C_LABEL(memset) # memset(edata, 0, end - edata) 115 1.2.2.2 kent subu a2, a2, a0 116 1.2.2.2 kent lw a0, 0(sp) # restore argc 117 1.2.2.2 kent lw a1, 4(sp) # restore argv 118 1.2.2.2 kent jal _C_LABEL(main) # main(argc, argv, envp) 119 1.2.2.2 kent lw a2, 8(sp) # restore envp 120 1.2.2.2 kent lw ra, CALLFRAME_RA(sp) # restore RA 121 1.2.2.2 kent j ra 122 1.2.2.2 kent addi sp, CALLFRAME_SIZ 123 1.2.2.2 kent 124 1.2.2.2 kent .data 125 1.2.2.2 kent .global ARCBIOS 126 1.2.2.2 kent ARCBIOS: 127 1.2.2.2 kent .data 0 128
Indexes created Mon Oct 20 20:10:13 GMT 2025