1/* $NetBSD: prom.S,v 1.2 2000/09/26 09:32:25 wdk Exp $ */ 2 3/* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Wayne Knowles 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include <mips/asm.h> 40#include <mips/cpuregs.h> 41#include <machine/prom.h> 42 43 44LEAF(prom_restart) 45 li v0, MIPS_PROM_RESTART 46 j v0 47 move a0, zero 48END(prom_restart) 49 50NESTED(prom_open, CALLFRAME_SIZ, ra) 51 .mask 0x80000000, -4 52 subu sp, sp, CALLFRAME_SIZ 53 sw ra, CALLFRAME_RA(sp) 54 li v0, MIPS_PROM_OPEN 55 jal v0 56 nop 57 /* 58 * On return t0 contains our _iob structure 59 * v0 contains the file descriptor number 60 */ 61 la t4, saiob 62 sll t5, v0, 2 63 add t4, t4, t5 64 lw ra, CALLFRAME_RA(sp) 65 addu sp, sp, CALLFRAME_SIZ 66 sw t0, 0(t4) 67 j ra 68 nop 69END(prom_open) 70 71#ifndef LIBSA_NO_DEV_CLOSE 72LEAF(prom_close) 73 li v0, MIPS_PROM_CLOSE 74 j v0 75 nop 76END(prom_close) 77#endif 78 79LEAF(prom_read) 80 li v0, MIPS_PROM_READ 81 j v0 82 nop 83END(prom_read) 84 85#ifndef LIBSA_NO_FS_WRITE 86LEAF(prom_write) 87 li v0, MIPS_PROM_WRITE 88 j v0 89 nop 90END(prom_write) 91#endif 92 93LEAF(printf) 94 li v0, MIPS_PROM_PRINTF 95 j v0 96 nop 97END(printf) 98 99#ifndef NO_GETCHAR 100LEAF(getchar) 101 li v0, MIPS_PROM_GETCHAR 102 j v0 103 nop 104END(getchar) 105 106LEAF(putchar) 107 li v0, MIPS_PROM_PUTCHAR 108 j v0 109 nop 110END(putchar) 111#endif 112 113 .sdata 114 115 .global saiob 116saiob: .space 8*4 117 118