| /* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
| 2004, 2005, 2006 |
| Free Software Foundation, Inc. |
| |
| This file 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, or (at your option) any |
| later version. |
| |
| In addition to the permissions in the GNU General Public License, the |
| Free Software Foundation gives you unlimited permission to link the |
| compiled version of this file into combinations with other programs, |
| and to distribute those combinations without any restriction coming |
| from the use of this file. (The General Public License restrictions |
| do apply in other respects; for example, they cover modification of |
| the file, and distribution when not linked into a combine |
| executable.) |
| |
| This file 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; see the file COPYING. If not, write to |
| the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| !! libgcc routines for the Renesas / SuperH SH CPUs. |
| !! Contributed by Steve Chamberlain. |
| !! sac@cygnus.com |
| |
| !! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines |
| !! recoded in assembly by Toshiyasu Morita |
| !! tm@netcom.com |
| |
| /* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and |
| ELF local label prefixes by J"orn Rennecke |
| amylaar@cygnus.com */ |
| |
| /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */ |
| /* n1 < d, but n1 might be larger than d1. */ |
| .global __udiv_qrnnd_16 |
| .balign 8 |
| __udiv_qrnnd_16: |
| div0u |
| cmp/hi r6,r0 |
| bt .Lots |
| .rept 16 |
| div1 r6,r0 |
| .endr |
| extu.w r0,r1 |
| bt 0f |
| add r6,r0 |
| 0: rotcl r1 |
| mulu.w r1,r5 |
| xtrct r4,r0 |
| swap.w r0,r0 |
| sts macl,r2 |
| cmp/hs r2,r0 |
| sub r2,r0 |
| bt 0f |
| addc r5,r0 |
| add #-1,r1 |
| bt 0f |
| 1: add #-1,r1 |
| rts |
| add r5,r0 |
| .balign 8 |
| .Lots: |
| sub r5,r0 |
| swap.w r4,r1 |
| xtrct r0,r1 |
| clrt |
| mov r1,r0 |
| addc r5,r0 |
| mov #-1,r1 |
| bf/s 1b |
| shlr16 r1 |
| 0: rts |
| nop |