Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
[linux-2.6.git] / arch / blackfin / lib / umodsi3.S
1 /*
2  * libgcc1 routines for Blackfin 5xx
3  *
4  * Copyright 2004-2009 Analog Devices Inc.
5  *
6  * Licensed under the ADI BSD license or the GPL-2 (or later)
7  */
8
9 #ifdef CONFIG_ARITHMETIC_OPS_L1
10 .section .l1.text
11 #else
12 .text
13 #endif
14
15 .extern ___udivsi3;
16 .type ___udivsi3, STT_FUNC;
17 .globl  ___umodsi3
18 .type ___umodsi3, STT_FUNC;
19 ___umodsi3:
20
21         CC=R0==0;
22         IF CC JUMP .LRETURN_R0;         /* Return 0, if NR == 0 */
23         CC= R1==0;
24         IF CC JUMP .LRETURN_ZERO_VAL;   /* Return 0, if DR == 0 */
25         CC=R0==R1;
26         IF CC JUMP .LRETURN_ZERO_VAL;   /* Return 0, if NR == DR */
27         CC = R1 == 1;
28         IF CC JUMP .LRETURN_ZERO_VAL;   /* Return 0, if  DR == 1 */
29         CC = R0<R1 (IU);
30         IF CC JUMP .LRETURN_R0;         /* Return dividend (R0),IF NR<DR */
31
32         [--SP] = (R7:6);                /* Push registers and */
33         [--SP] = RETS;                  /* Return address */
34         R7 = R0;                        /* Copy of R0 */
35         R6 = R1;
36         SP += -12;                      /* Should always provide this space */
37         CALL ___udivsi3;                /* Compute unsigned quotient using ___udiv32()*/
38         SP += 12;
39         R0 *= R6;                       /* Quotient * divisor */
40         R0 = R7 - R0;                   /* Dividend - (quotient * divisor) */
41         RETS = [SP++];                  /* Pop return address */
42         ( R7:6) = [SP++];               /* And registers */
43         RTS;                            /* Return remainder */
44 .LRETURN_ZERO_VAL:
45         R0 = 0;
46 .LRETURN_R0:
47         RTS;
48
49 .size ___umodsi3, .-___umodsi3