linux-stable/arch/sh/lib/udivsi3.S
Kuninori Morimoto 4494ce4fb4 sh: lib: convert to SPDX identifiers
Update license to use SPDX-License-Identifier instead of verbose license
text.

Link: http://lkml.kernel.org/r/871s6wcswb.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-12-28 12:11:45 -08:00

66 lines
1,015 B
ArmAsm

/* 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