mirror of https://gitee.com/openkylin/linux.git
82 lines
2.2 KiB
ArmAsm
82 lines
2.2 KiB
ArmAsm
|
/* 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
|