1 /***************************************************************************
2 * Copyright (C) 2010 by Spencer Oliver *
3 * spen@spen-soft.co.uk *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
37 addiu $t4, $a0, 0 /* address in */
38 addiu $t2, $a1, 0 /* count */
40 addiu $a0, $zero, 0xffffffff /* a0 crc - result */
42 beq $zero, $zero, ncomp
43 addiu $t3, $zero, 0 /* clear bytes read */
46 lb $a1, ($t4) /* load byte from source address */
47 addi $t4, $t4, 1 /* inc byte count */
54 addu $a2, $zero, $zero /* clear bit count */
57 addiu $a2, $a2, 1 /* inc bit count */
61 slti $v1, $a2, 8 /* 8bits processed */
66 bne $t2, $t3, nbyte /* all bytes processed */