u-boot/arch/sh/lib/udivsi3.S

/* SPDX-License-Identifier: GPL-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
SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com> 2018-05-06 21:58:06 +00:00			`/* SPDX-License-Identifier: GPL-2.0+ */`
sh: import missing private libraries from Linux 3.19 SuperH is supposed to support the Private Library feature, but it is actually not working. If CONFIG_USE_PRIVATE_LIBGCC is enabled, the build fails for the undefined references to '__sdivsi3_i4i' and '__udivsi3_i4i'. To fix this error, import missing libraries from Linux 3.19 and adjust them for U-Boot: - Remove "#include <linux/module.h>" and "EXPORT_SYMBOL(...)" - Use SPDX-License-Identifier - Remove white space Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> 2015-02-10 12:37:01 +00:00			`/* 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`