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Diffstat (limited to 'arch/sh/lib/udivsi3.S')
| -rw-r--r-- | arch/sh/lib/udivsi3.S | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/arch/sh/lib/udivsi3.S b/arch/sh/lib/udivsi3.S new file mode 100644 index 000000000000..72157ab5c314 --- /dev/null +++ b/arch/sh/lib/udivsi3.S | |||
| @@ -0,0 +1,87 @@ | |||
| 1 | /* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, | ||
| 2 | 2004, 2005 | ||
| 3 | Free Software Foundation, Inc. | ||
| 4 | |||
| 5 | This file is free software; you can redistribute it and/or modify it | ||
| 6 | under the terms of the GNU General Public License as published by the | ||
| 7 | Free Software Foundation; either version 2, or (at your option) any | ||
| 8 | later version. | ||
| 9 | |||
| 10 | In addition to the permissions in the GNU General Public License, the | ||
| 11 | Free Software Foundation gives you unlimited permission to link the | ||
| 12 | compiled version of this file into combinations with other programs, | ||
| 13 | and to distribute those combinations without any restriction coming | ||
| 14 | from the use of this file. (The General Public License restrictions | ||
| 15 | do apply in other respects; for example, they cover modification of | ||
| 16 | the file, and distribution when not linked into a combine | ||
| 17 | executable.) | ||
| 18 | |||
| 19 | This file is distributed in the hope that it will be useful, but | ||
| 20 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 22 | General Public License for more details. | ||
| 23 | |||
| 24 | You should have received a copy of the GNU General Public License | ||
| 25 | along with this program; see the file COPYING. If not, write to | ||
| 26 | the Free Software Foundation, 51 Franklin Street, Fifth Floor, | ||
| 27 | Boston, MA 02110-1301, USA. */ | ||
| 28 | |||
| 29 | !! libgcc routines for the Renesas / SuperH SH CPUs. | ||
| 30 | !! Contributed by Steve Chamberlain. | ||
| 31 | !! sac@cygnus.com | ||
| 32 | |||
| 33 | .balign 4 | ||
| 34 | .global __udivsi3 | ||
| 35 | .type __udivsi3, @function | ||
| 36 | div8: | ||
| 37 | div1 r5,r4 | ||
| 38 | div7: | ||
| 39 | div1 r5,r4; div1 r5,r4; div1 r5,r4 | ||
| 40 | div1 r5,r4; div1 r5,r4; div1 r5,r4; rts; div1 r5,r4 | ||
| 41 | |||
| 42 | divx4: | ||
| 43 | div1 r5,r4; rotcl r0 | ||
| 44 | div1 r5,r4; rotcl r0 | ||
| 45 | div1 r5,r4; rotcl r0 | ||
| 46 | rts; div1 r5,r4 | ||
| 47 | |||
| 48 | __udivsi3: | ||
| 49 | sts.l pr,@-r15 | ||
| 50 | extu.w r5,r0 | ||
| 51 | cmp/eq r5,r0 | ||
| 52 | bf/s large_divisor | ||
| 53 | div0u | ||
| 54 | swap.w r4,r0 | ||
| 55 | shlr16 r4 | ||
| 56 | bsr div8 | ||
| 57 | shll16 r5 | ||
| 58 | bsr div7 | ||
| 59 | div1 r5,r4 | ||
| 60 | xtrct r4,r0 | ||
| 61 | xtrct r0,r4 | ||
| 62 | bsr div8 | ||
| 63 | swap.w r4,r4 | ||
| 64 | bsr div7 | ||
| 65 | div1 r5,r4 | ||
| 66 | lds.l @r15+,pr | ||
| 67 | xtrct r4,r0 | ||
| 68 | swap.w r0,r0 | ||
| 69 | rotcl r0 | ||
| 70 | rts | ||
| 71 | shlr16 r5 | ||
| 72 | |||
| 73 | large_divisor: | ||
| 74 | mov #0,r0 | ||
| 75 | xtrct r4,r0 | ||
| 76 | xtrct r0,r4 | ||
| 77 | bsr divx4 | ||
| 78 | rotcl r0 | ||
| 79 | bsr divx4 | ||
| 80 | rotcl r0 | ||
| 81 | bsr divx4 | ||
| 82 | rotcl r0 | ||
| 83 | bsr divx4 | ||
| 84 | rotcl r0 | ||
| 85 | lds.l @r15+,pr | ||
| 86 | rts | ||
| 87 | rotcl r0 | ||
