summaryrefslogtreecommitdiff
path: root/arch/sh/lib/ashlsi3.S
blob: f971568e35a86e6e8f54d4e46bb27135deb83687 (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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   2004, 2005, 2006
   Free Software Foundation, Inc.

 * SPDX-License-Identifier:	GPL-2.0+
 */

!! libgcc routines for the Renesas / SuperH SH CPUs.
!! Contributed by Steve Chamberlain.
!! sac@cygnus.com

!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
!! recoded in assembly by Toshiyasu Morita
!! tm@netcom.com

/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
   ELF local label prefixes by J"orn Rennecke
   amylaar@cygnus.com  */

!
! GLOBAL(ashlsi3)
!
! Entry:
!
! r4: Value to shift
! r5: Shifts
!
! Exit:
!
! r0: Result
!
! Destroys:
!
! (none)
!
	.global	__ashlsi3
	.align	2
__ashlsi3:
	mov	#31,r0
	and	r0,r5
	mova	__ashlsi3_table,r0
	mov.b	@(r0,r5),r5
#ifdef __sh1__
	add	r5,r0
	jmp	@r0
#else
	braf	r5
#endif
	mov	r4,r0

	.align	2
__ashlsi3_table:
	.byte		__ashlsi3_0-__ashlsi3_table
	.byte		__ashlsi3_1-__ashlsi3_table
	.byte		__ashlsi3_2-__ashlsi3_table
	.byte		__ashlsi3_3-__ashlsi3_table
	.byte		__ashlsi3_4-__ashlsi3_table
	.byte		__ashlsi3_5-__ashlsi3_table
	.byte		__ashlsi3_6-__ashlsi3_table
	.byte		__ashlsi3_7-__ashlsi3_table
	.byte		__ashlsi3_8-__ashlsi3_table
	.byte		__ashlsi3_9-__ashlsi3_table
	.byte		__ashlsi3_10-__ashlsi3_table
	.byte		__ashlsi3_11-__ashlsi3_table
	.byte		__ashlsi3_12-__ashlsi3_table
	.byte		__ashlsi3_13-__ashlsi3_table
	.byte		__ashlsi3_14-__ashlsi3_table
	.byte		__ashlsi3_15-__ashlsi3_table
	.byte		__ashlsi3_16-__ashlsi3_table
	.byte		__ashlsi3_17-__ashlsi3_table
	.byte		__ashlsi3_18-__ashlsi3_table
	.byte		__ashlsi3_19-__ashlsi3_table
	.byte		__ashlsi3_20-__ashlsi3_table
	.byte		__ashlsi3_21-__ashlsi3_table
	.byte		__ashlsi3_22-__ashlsi3_table
	.byte		__ashlsi3_23-__ashlsi3_table
	.byte		__ashlsi3_24-__ashlsi3_table
	.byte		__ashlsi3_25-__ashlsi3_table
	.byte		__ashlsi3_26-__ashlsi3_table
	.byte		__ashlsi3_27-__ashlsi3_table
	.byte		__ashlsi3_28-__ashlsi3_table
	.byte		__ashlsi3_29-__ashlsi3_table
	.byte		__ashlsi3_30-__ashlsi3_table
	.byte		__ashlsi3_31-__ashlsi3_table

__ashlsi3_6:
	shll2	r0
__ashlsi3_4:
	shll2	r0
__ashlsi3_2:
	rts
	shll2	r0

__ashlsi3_7:
	shll2	r0
__ashlsi3_5:
	shll2	r0
__ashlsi3_3:
	shll2	r0
__ashlsi3_1:
	rts
	shll	r0

__ashlsi3_14:
	shll2	r0
__ashlsi3_12:
	shll2	r0
__ashlsi3_10:
	shll2	r0
__ashlsi3_8:
	rts
	shll8	r0

__ashlsi3_15:
	shll2	r0
__ashlsi3_13:
	shll2	r0
__ashlsi3_11:
	shll2	r0
__ashlsi3_9:
	shll8	r0
	rts
	shll	r0

__ashlsi3_22:
	shll2	r0
__ashlsi3_20:
	shll2	r0
__ashlsi3_18:
	shll2	r0
__ashlsi3_16:
	rts
	shll16	r0

__ashlsi3_23:
	shll2	r0
__ashlsi3_21:
	shll2	r0
__ashlsi3_19:
	shll2	r0
__ashlsi3_17:
	shll16	r0
	rts
	shll	r0

__ashlsi3_30:
	shll2	r0
__ashlsi3_28:
	shll2	r0
__ashlsi3_26:
	shll2	r0
__ashlsi3_24:
	shll16	r0
	rts
	shll8	r0

__ashlsi3_31:
	shll2	r0
__ashlsi3_29:
	shll2	r0
__ashlsi3_27:
	shll2	r0
__ashlsi3_25:
	shll16	r0
	shll8	r0
	rts
	shll	r0

__ashlsi3_0:
	rts
	nop