1/* MN10300 64-bit arithmetic left shift
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11#include <asm/cache.h>
12
13        .text
14        .balign	L1_CACHE_BYTES
15
16###############################################################################
17#
18# unsigned long long __ashldi3(unsigned long long value [D1:D0],
19#			       unsigned by [(12,SP)])
20#
21###############################################################################
22        .globl	__ashldi3
23        .type	__ashldi3,@function
24__ashldi3:
25	mov	(12,sp),a0
26	and	+63,a0
27	beq	__ashldi3_zero
28
29	cmp	+31,a0
30	bhi	__ashldi3_32plus
31
32	# the count is in the range 1-31
33	asl	a0,d1
34
35	mov	+32,a1
36	sub	a0,a1,a1			# a1 = 32 - count
37	lsr	a1,d0,a1			# get overflow from LSW -> MSW
38
39	or_asl	a1,d1,a0,d0			# insert overflow into MSW and
40						# shift the LSW
41	rets
42
43	.balign	L1_CACHE_BYTES
44	# the count is in the range 32-63
45__ashldi3_32plus:
46	asl	a0,d0,d1
47	clr	d0
48__ashldi3_zero:
49	rets
50
51	.size	__ashldi3, .-__ashldi3
52