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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/sh/lib/ashlsi3.S
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/* SPDX-License-Identifier: GPL-2.0+ WITH GCC-exception-2.0

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   Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,

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   2004, 2005, 2006

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   Free Software Foundation, Inc.

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*/

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!! libgcc routines for the Renesas / SuperH SH CPUs.

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!! Contributed by Steve Chamberlain.

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!! sac@cygnus.com

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!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines

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!! recoded in assembly by Toshiyasu Morita

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!! tm@netcom.com

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/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and

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   ELF local label prefixes by J"orn Rennecke

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   [email protected]  */

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!

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! __ashlsi3

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!

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! Entry:

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!

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! r4: Value to shift

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! r5: Shifts

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!

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! Exit:

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!

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! r0: Result

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!

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! Destroys:

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!

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! (none)

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!

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! __ashlsi3_r0

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!

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! Entry:

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!

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! r4: Value to shift

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! r0: Shifts

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!

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! Exit:

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!

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! r0: Result

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!

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! Destroys:

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!

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! (none)

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	.global	__ashlsi3

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	.global	__ashlsi3_r0

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	.align	2

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__ashlsi3:

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	mov	r5,r0

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	.align	2

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__ashlsi3_r0:

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	and	#31,r0

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	mov.l	r4,@-r15

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	mov	r0,r4

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	mova	ashlsi3_table,r0

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	mov.b	@(r0,r4),r4

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	add	r4,r0

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	jmp	@r0

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	mov.l	@r15+,r0

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	.align	2

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ashlsi3_table:

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	.byte		ashlsi3_0-ashlsi3_table

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	.byte		ashlsi3_1-ashlsi3_table

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	.byte		ashlsi3_2-ashlsi3_table

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	.byte		ashlsi3_3-ashlsi3_table

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	.byte		ashlsi3_4-ashlsi3_table

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	.byte		ashlsi3_5-ashlsi3_table

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	.byte		ashlsi3_6-ashlsi3_table

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	.byte		ashlsi3_7-ashlsi3_table

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	.byte		ashlsi3_8-ashlsi3_table

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	.byte		ashlsi3_9-ashlsi3_table

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	.byte		ashlsi3_10-ashlsi3_table

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	.byte		ashlsi3_11-ashlsi3_table

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	.byte		ashlsi3_12-ashlsi3_table

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	.byte		ashlsi3_13-ashlsi3_table

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	.byte		ashlsi3_14-ashlsi3_table

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	.byte		ashlsi3_15-ashlsi3_table

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	.byte		ashlsi3_16-ashlsi3_table

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	.byte		ashlsi3_17-ashlsi3_table

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	.byte		ashlsi3_18-ashlsi3_table

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	.byte		ashlsi3_19-ashlsi3_table

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	.byte		ashlsi3_20-ashlsi3_table

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	.byte		ashlsi3_21-ashlsi3_table

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	.byte		ashlsi3_22-ashlsi3_table

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	.byte		ashlsi3_23-ashlsi3_table

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	.byte		ashlsi3_24-ashlsi3_table

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	.byte		ashlsi3_25-ashlsi3_table

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	.byte		ashlsi3_26-ashlsi3_table

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	.byte		ashlsi3_27-ashlsi3_table

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	.byte		ashlsi3_28-ashlsi3_table

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	.byte		ashlsi3_29-ashlsi3_table

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	.byte		ashlsi3_30-ashlsi3_table

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	.byte		ashlsi3_31-ashlsi3_table

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ashlsi3_6:

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	shll2	r0

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ashlsi3_4:

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	shll2	r0

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ashlsi3_2:

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	rts

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	shll2	r0

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ashlsi3_7:

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	shll2	r0

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ashlsi3_5:

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	shll2	r0

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ashlsi3_3:

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	shll2	r0

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ashlsi3_1:

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	rts

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	shll	r0

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ashlsi3_14:

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	shll2	r0

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ashlsi3_12:

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	shll2	r0

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ashlsi3_10:

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	shll2	r0

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ashlsi3_8:

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	rts

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	shll8	r0

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ashlsi3_15:

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	shll2	r0

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ashlsi3_13:

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	shll2	r0

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ashlsi3_11:

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	shll2	r0

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ashlsi3_9:

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	shll8	r0

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	rts

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	shll	r0

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ashlsi3_22:

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	shll2	r0

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ashlsi3_20:

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	shll2	r0

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ashlsi3_18:

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	shll2	r0

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ashlsi3_16:

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	rts

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	shll16	r0

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ashlsi3_23:

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	shll2	r0

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ashlsi3_21:

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	shll2	r0

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ashlsi3_19:

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	shll2	r0

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ashlsi3_17:

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	shll16	r0

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	rts

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	shll	r0

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ashlsi3_30:

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	shll2	r0

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ashlsi3_28:

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	shll2	r0

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ashlsi3_26:

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	shll2	r0

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ashlsi3_24:

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	shll16	r0

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	rts

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	shll8	r0

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ashlsi3_31:

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	shll2	r0

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ashlsi3_29:

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	shll2	r0

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ashlsi3_27:

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	shll2	r0

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ashlsi3_25:

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	shll16	r0

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	shll8	r0

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	rts

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	shll	r0

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ashlsi3_0:

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	rts

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	nop

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