| /* SPDX-License-Identifier: GPL-2.0+ WITH GCC-exception-2.0 |
| |
| Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
| 2004, 2005 |
| Free Software Foundation, Inc. |
| */ |
| |
| !! libgcc routines for the Renesas / SuperH SH CPUs. |
| !! Contributed by Steve Chamberlain. |
| !! sac@cygnus.com |
| |
| .balign 4 |
| .global __udivsi3 |
| .type __udivsi3, @function |
| div8: |
| div1 r5,r4 |
| div7: |
| div1 r5,r4; div1 r5,r4; div1 r5,r4 |
| div1 r5,r4; div1 r5,r4; div1 r5,r4; rts; div1 r5,r4 |
| |
| divx4: |
| div1 r5,r4; rotcl r0 |
| div1 r5,r4; rotcl r0 |
| div1 r5,r4; rotcl r0 |
| rts; div1 r5,r4 |
| |
| __udivsi3: |
| sts.l pr,@-r15 |
| extu.w r5,r0 |
| cmp/eq r5,r0 |
| bf/s large_divisor |
| div0u |
| swap.w r4,r0 |
| shlr16 r4 |
| bsr div8 |
| shll16 r5 |
| bsr div7 |
| div1 r5,r4 |
| xtrct r4,r0 |
| xtrct r0,r4 |
| bsr div8 |
| swap.w r4,r4 |
| bsr div7 |
| div1 r5,r4 |
| lds.l @r15+,pr |
| xtrct r4,r0 |
| swap.w r0,r0 |
| rotcl r0 |
| rts |
| shlr16 r5 |
| |
| large_divisor: |
| mov #0,r0 |
| xtrct r4,r0 |
| xtrct r0,r4 |
| bsr divx4 |
| rotcl r0 |
| bsr divx4 |
| rotcl r0 |
| bsr divx4 |
| rotcl r0 |
| bsr divx4 |
| rotcl r0 |
| lds.l @r15+,pr |
| rts |
| rotcl r0 |
