1 /* SPDX-License-Identifier: GPL-2.0+ WITH GCC-
2
3 Copyright (C) 1994, 1995, 1997, 1998, 1999,
4 2004, 2005, 2006
5 Free Software Foundation, Inc.
6 */
7
8 !! libgcc routines for the Renesas / SuperH SH
9 !! Contributed by Steve Chamberlain.
10 !! sac@cygnus.com
11
12 !! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___l
13 !! recoded in assembly by Toshiyasu Morita
14 !! tm@netcom.com
15
16 /* SH2 optimizations for ___ashrsi3, ___ashlsi
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 !
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 !
51 .global __lshrsi3
52 .global __lshrsi3_r0
53
54 .align 2
55 __lshrsi3:
56 mov r5,r0
57 .align 2
58 __lshrsi3_r0:
59 and #31,r0
60 mov.l r4,@-r15
61 mov r0,r4
62 mova lshrsi3_table,r0
63 mov.b @(r0,r4),r4
64 add r4,r0
65 jmp @r0
66 mov.l @r15+,r0
67
68 .align 2
69 lshrsi3_table:
70 .byte lshrsi3_0-lshrsi3_tabl
71 .byte lshrsi3_1-lshrsi3_tabl
72 .byte lshrsi3_2-lshrsi3_tabl
73 .byte lshrsi3_3-lshrsi3_tabl
74 .byte lshrsi3_4-lshrsi3_tabl
75 .byte lshrsi3_5-lshrsi3_tabl
76 .byte lshrsi3_6-lshrsi3_tabl
77 .byte lshrsi3_7-lshrsi3_tabl
78 .byte lshrsi3_8-lshrsi3_tabl
79 .byte lshrsi3_9-lshrsi3_tabl
80 .byte lshrsi3_10-lshrsi3_tab
81 .byte lshrsi3_11-lshrsi3_tab
82 .byte lshrsi3_12-lshrsi3_tab
83 .byte lshrsi3_13-lshrsi3_tab
84 .byte lshrsi3_14-lshrsi3_tab
85 .byte lshrsi3_15-lshrsi3_tab
86 .byte lshrsi3_16-lshrsi3_tab
87 .byte lshrsi3_17-lshrsi3_tab
88 .byte lshrsi3_18-lshrsi3_tab
89 .byte lshrsi3_19-lshrsi3_tab
90 .byte lshrsi3_20-lshrsi3_tab
91 .byte lshrsi3_21-lshrsi3_tab
92 .byte lshrsi3_22-lshrsi3_tab
93 .byte lshrsi3_23-lshrsi3_tab
94 .byte lshrsi3_24-lshrsi3_tab
95 .byte lshrsi3_25-lshrsi3_tab
96 .byte lshrsi3_26-lshrsi3_tab
97 .byte lshrsi3_27-lshrsi3_tab
98 .byte lshrsi3_28-lshrsi3_tab
99 .byte lshrsi3_29-lshrsi3_tab
100 .byte lshrsi3_30-lshrsi3_tab
101 .byte lshrsi3_31-lshrsi3_tab
102
103 lshrsi3_6:
104 shlr2 r0
105 lshrsi3_4:
106 shlr2 r0
107 lshrsi3_2:
108 rts
109 shlr2 r0
110
111 lshrsi3_7:
112 shlr2 r0
113 lshrsi3_5:
114 shlr2 r0
115 lshrsi3_3:
116 shlr2 r0
117 lshrsi3_1:
118 rts
119 shlr r0
120
121 lshrsi3_14:
122 shlr2 r0
123 lshrsi3_12:
124 shlr2 r0
125 lshrsi3_10:
126 shlr2 r0
127 lshrsi3_8:
128 rts
129 shlr8 r0
130
131 lshrsi3_15:
132 shlr2 r0
133 lshrsi3_13:
134 shlr2 r0
135 lshrsi3_11:
136 shlr2 r0
137 lshrsi3_9:
138 shlr8 r0
139 rts
140 shlr r0
141
142 lshrsi3_22:
143 shlr2 r0
144 lshrsi3_20:
145 shlr2 r0
146 lshrsi3_18:
147 shlr2 r0
148 lshrsi3_16:
149 rts
150 shlr16 r0
151
152 lshrsi3_23:
153 shlr2 r0
154 lshrsi3_21:
155 shlr2 r0
156 lshrsi3_19:
157 shlr2 r0
158 lshrsi3_17:
159 shlr16 r0
160 rts
161 shlr r0
162
163 lshrsi3_30:
164 shlr2 r0
165 lshrsi3_28:
166 shlr2 r0
167 lshrsi3_26:
168 shlr2 r0
169 lshrsi3_24:
170 shlr16 r0
171 rts
172 shlr8 r0
173
174 lshrsi3_31:
175 shlr2 r0
176 lshrsi3_29:
177 shlr2 r0
178 lshrsi3_27:
179 shlr2 r0
180 lshrsi3_25:
181 shlr16 r0
182 shlr8 r0
183 rts
184 shlr r0
185
186 lshrsi3_0:
187 rts
188 nop
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.