summaryrefslogtreecommitdiffstats
path: root/kernel/arch/frv/lib/outsl_ns.S
blob: 4cd4c46a69661e879a6db57bd955f701242a8a3a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
/* outsl_ns.S: output array of 4b words to device without byte swapping
 *
 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */


        .text
        .p2align	4

###############################################################################
#
# void __outsl_ns(unsigned int port, const void *buf, int n)
#
###############################################################################
        .globl		__outsl_ns
        .type		__outsl_ns,@function
__outsl_ns:
	andicc.p	gr9,#3,gr0,icc0
	setlos		#4,gr4
	bne		icc0,#0,__outsl_ns_misaligned
	subi		gr9,#4,gr9
0:
	ldu.p		@(gr9,gr4),gr5
	subicc		gr10,#1,gr10,icc0
	sti.p		gr5,@(gr8,#0)
	bhi		icc0,#2,0b

	membar
	bralr

__outsl_ns_misaligned:
	subi.p		gr9,#1,gr9
	setlos		#1,gr4
0:
	ldubu		@(gr9,gr4),gr5
	ldubu.p		@(gr9,gr4),gr6
	slli		gr5,#8,gr5
	ldubu.p		@(gr9,gr4),gr7
	or		gr5,gr6,gr5
	ldubu.p		@(gr9,gr4),gr6
	slli		gr5,#16,gr5
	slli.p		gr7,#8,gr7
	or		gr5,gr6,gr5
	subicc.p	gr10,#1,gr10,icc0
	or		gr5,gr7,gr5

	sti.p		gr5,@(gr8,#0)
	bhi		icc0,#2,0b

	membar
	bralr

	.size		__outsl_ns, .-__outsl_ns