mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-17 08:43:07 +00:00
67 lines
993 B
ArmAsm
67 lines
993 B
ArmAsm
|
/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
|
||
|
|
2004, 2005
|
||
|
|
Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
|
*/
|
||
|
|
|
||
|
|
!! 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
|