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review.shift-gmbh.com / SHIFTPHONES / kernel / common / 6ff90aa2cfddb1bce5450cb711069315ad17bd14 / . / arch / sh / lib / lshrsi3.S
blob: b79b8170061f3350b2aca22570b1e6b25f0ef60f [file] [log] [blame]
Kuninori Morimoto4494ce42018-12-28 00:32:28 -0800[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0+ WITH GCC-exception-2.0
2
3 Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
Paul Mundt1aad54a2008-11-18 17:33:48 +0900[diff] [blame]4 2004, 2005, 2006
5 Free Software Foundation, Inc.
Kuninori Morimoto4494ce42018-12-28 00:32:28 -0800[diff] [blame]6*/
Paul Mundt1aad54a2008-11-18 17:33:48 +0900[diff] [blame]7
8!! libgcc routines for the Renesas / SuperH SH CPUs.
9!! Contributed by Steve Chamberlain.
10!! sac@cygnus.com
11
12!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
13!! recoded in assembly by Toshiyasu Morita
14!! tm@netcom.com
15
16/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
17 ELF local label prefixes by J"orn Rennecke
18 amylaar@cygnus.com */
19
20!
21! __lshrsi3
22!
23! Entry:
24!
25! r4: Value to shift
26! r5: Shifts
27!
28! Exit:
29!
30! r0: Result
31!
32! Destroys:
33!
34! (none)
35!
Yoshinori Sato940d4112015-06-20 14:02:19 +0900[diff] [blame]36! __lshrsi3_r0
37!
38! Entry:
39!
40! r0: Value to shift
41! r5: Shifts
42!
43! Exit:
44!
45! r0: Result
46!
47! Destroys:
48!
49! (none)
50!
Paul Mundt1aad54a2008-11-18 17:33:48 +0900[diff] [blame]51 .global __lshrsi3
Yoshinori Sato940d4112015-06-20 14:02:19 +0900[diff] [blame]52 .global __lshrsi3_r0
Paul Mundt1aad54a2008-11-18 17:33:48 +0900[diff] [blame]53
54 .align 2
55__lshrsi3:
Yoshinori Sato940d4112015-06-20 14:02:19 +0900[diff] [blame]56 mov r5,r0
57 .align 2
58__lshrsi3_r0:
59 and #31,r0
60 mov.l r4,@-r15
61 mov r0,r4
Paul Mundt1aad54a2008-11-18 17:33:48 +0900[diff] [blame]62 mova lshrsi3_table,r0
Yoshinori Sato940d4112015-06-20 14:02:19 +0900[diff] [blame]63 mov.b @(r0,r4),r4
64 add r4,r0
Paul Mundt1aad54a2008-11-18 17:33:48 +0900[diff] [blame]65 jmp @r0
Yoshinori Sato940d4112015-06-20 14:02:19 +0900[diff] [blame]66 mov.l @r15+,r0
Paul Mundt1aad54a2008-11-18 17:33:48 +0900[diff] [blame]67
68 .align 2
69lshrsi3_table:
70 .byte lshrsi3_0-lshrsi3_table
71 .byte lshrsi3_1-lshrsi3_table
72 .byte lshrsi3_2-lshrsi3_table
73 .byte lshrsi3_3-lshrsi3_table
74 .byte lshrsi3_4-lshrsi3_table
75 .byte lshrsi3_5-lshrsi3_table
76 .byte lshrsi3_6-lshrsi3_table
77 .byte lshrsi3_7-lshrsi3_table
78 .byte lshrsi3_8-lshrsi3_table
79 .byte lshrsi3_9-lshrsi3_table
80 .byte lshrsi3_10-lshrsi3_table
81 .byte lshrsi3_11-lshrsi3_table
82 .byte lshrsi3_12-lshrsi3_table
83 .byte lshrsi3_13-lshrsi3_table
84 .byte lshrsi3_14-lshrsi3_table
85 .byte lshrsi3_15-lshrsi3_table
86 .byte lshrsi3_16-lshrsi3_table
87 .byte lshrsi3_17-lshrsi3_table
88 .byte lshrsi3_18-lshrsi3_table
89 .byte lshrsi3_19-lshrsi3_table
90 .byte lshrsi3_20-lshrsi3_table
91 .byte lshrsi3_21-lshrsi3_table
92 .byte lshrsi3_22-lshrsi3_table
93 .byte lshrsi3_23-lshrsi3_table
94 .byte lshrsi3_24-lshrsi3_table
95 .byte lshrsi3_25-lshrsi3_table
96 .byte lshrsi3_26-lshrsi3_table
97 .byte lshrsi3_27-lshrsi3_table
98 .byte lshrsi3_28-lshrsi3_table
99 .byte lshrsi3_29-lshrsi3_table
100 .byte lshrsi3_30-lshrsi3_table
101 .byte lshrsi3_31-lshrsi3_table
102
103lshrsi3_6:
104 shlr2 r0
105lshrsi3_4:
106 shlr2 r0
107lshrsi3_2:
108 rts
109 shlr2 r0
110
111lshrsi3_7:
112 shlr2 r0
113lshrsi3_5:
114 shlr2 r0
115lshrsi3_3:
116 shlr2 r0
117lshrsi3_1:
118 rts
119 shlr r0
120
121lshrsi3_14:
122 shlr2 r0
123lshrsi3_12:
124 shlr2 r0
125lshrsi3_10:
126 shlr2 r0
127lshrsi3_8:
128 rts
129 shlr8 r0
130
131lshrsi3_15:
132 shlr2 r0
133lshrsi3_13:
134 shlr2 r0
135lshrsi3_11:
136 shlr2 r0
137lshrsi3_9:
138 shlr8 r0
139 rts
140 shlr r0
141
142lshrsi3_22:
143 shlr2 r0
144lshrsi3_20:
145 shlr2 r0
146lshrsi3_18:
147 shlr2 r0
148lshrsi3_16:
149 rts
150 shlr16 r0
151
152lshrsi3_23:
153 shlr2 r0
154lshrsi3_21:
155 shlr2 r0
156lshrsi3_19:
157 shlr2 r0
158lshrsi3_17:
159 shlr16 r0
160 rts
161 shlr r0
162
163lshrsi3_30:
164 shlr2 r0
165lshrsi3_28:
166 shlr2 r0
167lshrsi3_26:
168 shlr2 r0
169lshrsi3_24:
170 shlr16 r0
171 rts
172 shlr8 r0
173
174lshrsi3_31:
175 shlr2 r0
176lshrsi3_29:
177 shlr2 r0
178lshrsi3_27:
179 shlr2 r0
180lshrsi3_25:
181 shlr16 r0
182 shlr8 r0
183 rts
184 shlr r0
185
186lshrsi3_0:
187 rts
188 nop