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/*
* File: arch/blackfin/lib/umodsi3.S
* Based on:
* Author:
*
* Created:
* Description: libgcc1 routines for Blackfin 5xx
*
* Modified:
* Copyright 2004-2006 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef CONFIG_ARITHMETIC_OPS_L1
.section .l1.text
#else
.text
#endif
.extern ___udivsi3;
.globl ___umodsi3
___umodsi3:
CC=R0==0;
IF CC JUMP .LRETURN_R0; /* Return 0, if NR == 0 */
CC= R1==0;
IF CC JUMP .LRETURN_ZERO_VAL; /* Return 0, if DR == 0 */
CC=R0==R1;
IF CC JUMP .LRETURN_ZERO_VAL; /* Return 0, if NR == DR */
CC = R1 == 1;
IF CC JUMP .LRETURN_ZERO_VAL; /* Return 0, if DR == 1 */
CC = R0<R1 (IU);
IF CC JUMP .LRETURN_R0; /* Return dividend (R0),IF NR<DR */
[--SP] = (R7:6); /* Push registers and */
[--SP] = RETS; /* Return address */
R7 = R0; /* Copy of R0 */
R6 = R1;
SP += -12; /* Should always provide this space */
CALL ___udivsi3; /* Compute unsigned quotient using ___udiv32()*/
SP += 12;
R0 *= R6; /* Quotient * divisor */
R0 = R7 - R0; /* Dividend - (quotient * divisor) */
RETS = [SP++]; /* Pop return address */
( R7:6) = [SP++]; /* And registers */
RTS; /* Return remainder */
.LRETURN_ZERO_VAL:
R0 = 0;
.LRETURN_R0:
RTS;
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