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