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- /* 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
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