1/* $NetBSD: romcalls.S,v 1.2 1999/12/17 07:33:20 tsubai Exp $ */ 2 3/*- 4 * Copyright (C) 1999 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <mips/asm.h> 30#include <mips/cpuregs.h> 31#include <machine/romcall.h> 32 33 .text 34 .align 2 35 .set noreorder 36 37 .globl halt 38halt: 39 addu sp, sp, -16 40 li a0, 8 # RB_HALT 41 sw a0, 0(sp) 42 li a0, SYS_reboot 43 move a1, sp 44 syscall 45 nop 46 47 .globl rom_open 48rom_open: 49 addu sp, sp, -32 50 sw ra, 28(sp) 51 52 sw a0, 16(sp) 53 sw a1, 20(sp) 54 55 li a0, SYS_open 56 addu a1, sp, 16 57 syscall 58 nop 59 60 lw ra, 28(sp) 61 addu sp, sp, 32 62 j ra 63 nop 64 65 .globl rom_close 66rom_close: 67 addu sp, sp, -32 68 sw ra, 28(sp) 69 70 sw a0, 16(sp) 71 72 li a0, SYS_close 73 addu a1, sp, 16 74 syscall 75 nop 76 77 lw ra, 28(sp) 78 addu sp, sp, 32 79 j ra 80 nop 81 82 .globl rom_read 83rom_read: 84 addu sp, sp, -32 85 sw ra, 28(sp) 86 87 sw a0, 16(sp) 88 sw a1, 20(sp) 89 sw a2, 24(sp) 90 91 li a0, SYS_read 92 addu a1, sp, 16 93 syscall 94 nop 95 96 lw ra, 28(sp) 97 addu sp, sp, 32 98 j ra 99 nop 100 101 .globl rom_write 102rom_write: 103 addu sp, sp, -32 104 sw ra, 28(sp) 105 106 sw a0, 16(sp) 107 sw a1, 20(sp) 108 sw a2, 24(sp) 109 110 li a0, SYS_write 111 addu a1, sp, 16 112 syscall 113 nop 114 115 lw ra, 28(sp) 116 addu sp, sp, 32 117 j ra 118 nop 119 120 121 .globl rom_lseek 122rom_lseek: 123 addu sp, sp, -32 124 sw ra, 28(sp) 125 126 sw a0, 16(sp) 127 sw a1, 20(sp) 128 sw a2, 24(sp) 129 130 li a0, SYS_lseek 131 addu a1, sp, 16 132 syscall 133 nop 134 135 lw ra, 28(sp) 136 addu sp, sp, 32 137 j ra 138 nop 139