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      1 /*	$NetBSD: romcalls.S,v 1.5 2003/04/18 18:52:27 tsutsui 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 LEAF_NOPROFILE(rom_halt)
     38 	addu	sp, sp, -16
     39 	li	a0, 8		# RB_HALT
     40 	sw	a0, 0(sp)
     41 	li	a0, SYS_reboot
     42 	move	a1, sp
     43 	syscall
     44 	nop
     45 END(rom_halt)
     46 
     47 LEAF_NOPROFILE(rom_open)
     48 	addu	sp, sp, -32
     49 	sw	ra, 28(sp)
     50 
     51 	sw	a0, 16(sp)
     52 	sw	a1, 20(sp)
     53 
     54 	li	a0, SYS_open
     55 	addu	a1, sp, 16
     56 	syscall
     57 	nop
     58 
     59 	lw	ra, 28(sp)
     60 	addu	sp, sp, 32
     61 	j	ra
     62 	nop
     63 END(rom_open)
     64 
     65 LEAF_NOPROFILE(rom_close)
     66 	addu	sp, sp, -32
     67 	sw	ra, 28(sp)
     68 
     69 	sw	a0, 16(sp)
     70 
     71 	li	a0, SYS_close
     72 	addu	a1, sp, 16
     73 	syscall
     74 	nop
     75 
     76 	lw	ra, 28(sp)
     77 	addu	sp, sp, 32
     78 	j	ra
     79 	nop
     80 END(rom_close)
     81 
     82 LEAF_NOPROFILE(rom_read)
     83 	addu	sp, sp, -32
     84 	sw	ra, 28(sp)
     85 
     86 	sw	a0, 16(sp)
     87 	sw	a1, 20(sp)
     88 	sw	a2, 24(sp)
     89 
     90 	li	a0, SYS_read
     91 	addu	a1, sp, 16
     92 	syscall
     93 	nop
     94 
     95 	lw	ra, 28(sp)
     96 	addu	sp, sp, 32
     97 	j	ra
     98 	nop
     99 END(rom_read)
    100 
    101 LEAF_NOPROFILE(rom_write)
    102 	addu	sp, sp, -32
    103 	sw	ra, 28(sp)
    104 
    105 	sw	a0, 16(sp)
    106 	sw	a1, 20(sp)
    107 	sw	a2, 24(sp)
    108 
    109 	li	a0, SYS_write
    110 	addu	a1, sp, 16
    111 	syscall
    112 	nop
    113 
    114 	lw	ra, 28(sp)
    115 	addu	sp, sp, 32
    116 	j	ra
    117 	nop
    118 END(rom_write)
    119 
    120 LEAF_NOPROFILE(rom_lseek)
    121 	addu	sp, sp, -32
    122 	sw	ra, 28(sp)
    123 
    124 	sw	a0, 16(sp)
    125 	sw	a1, 20(sp)
    126 	sw	a2, 24(sp)
    127 
    128 	li	a0, SYS_lseek
    129 	addu	a1, sp, 16
    130 	syscall
    131 	nop
    132 
    133 	lw	ra, 28(sp)
    134 	addu	sp, sp, 32
    135 	j	ra
    136 	nop
    137 END(rom_lseek)
    138 
    139 LEAF_NOPROFILE(rom_ioctl)
    140 	addu	sp, sp, -32
    141 	sw	ra, 28(sp)
    142 
    143 	sw	a0, 16(sp)
    144 	sw	a1, 20(sp)
    145 	sw	a2, 24(sp)
    146 
    147 	li	a0, SYS_ioctl
    148 	addu	a1, sp, 16
    149 	syscall
    150 	nop
    151 
    152 	lw	ra, 28(sp)
    153 	addu	sp, sp, 32
    154 	j	ra
    155 	nop
    156 END(rom_ioctl)
    157