2 * File: arch/blackfin/lib/umodsi3.S
7 * Description: libgcc1 routines for Blackfin 5xx
10 * Copyright 2004-2006 Analog Devices Inc.
12 * Bugs: Enter bugs at http://blackfin.uclinux.org/
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, see the file COPYING, or write
26 * to the Free Software Foundation, Inc.,
27 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
30 #ifdef CONFIG_ARITHMETIC_OPS_L1
41 IF CC JUMP .LRETURN_R0; /* Return 0, if NR == 0 */
43 IF CC JUMP .LRETURN_ZERO_VAL; /* Return 0, if DR == 0 */
45 IF CC JUMP .LRETURN_ZERO_VAL; /* Return 0, if NR == DR */
47 IF CC JUMP .LRETURN_ZERO_VAL; /* Return 0, if DR == 1 */
49 IF CC JUMP .LRETURN_R0; /* Return dividend (R0),IF NR<DR */
51 [--SP] = (R7:6); /* Push registers and */
52 [--SP] = RETS; /* Return address */
53 R7 = R0; /* Copy of R0 */
55 SP += -12; /* Should always provide this space */
56 CALL ___udivsi3; /* Compute unsigned quotient using ___udiv32()*/
58 R0 *= R6; /* Quotient * divisor */
59 R0 = R7 - R0; /* Dividend - (quotient * divisor) */
60 RETS = [SP++]; /* Pop return address */
61 ( R7:6) = [SP++]; /* And registers */
62 RTS; /* Return remainder */