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4494ce4f KM |
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, | |
1aad54a9 PM |
4 | 2004, 2005, 2006 |
5 | Free Software Foundation, Inc. | |
4494ce4f | 6 | */ |
1aad54a9 PM |
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) | |
940d4113 YS |
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) | |
1aad54a9 PM |
50 | ! |
51 | .global __lshrsi3 | |
940d4113 | 52 | .global __lshrsi3_r0 |
1aad54a9 PM |
53 | |
54 | .align 2 | |
55 | __lshrsi3: | |
940d4113 YS |
56 | mov r5,r0 |
57 | .align 2 | |
58 | __lshrsi3_r0: | |
59 | and #31,r0 | |
60 | mov.l r4,@-r15 | |
61 | mov r0,r4 | |
1aad54a9 | 62 | mova lshrsi3_table,r0 |
940d4113 YS |
63 | mov.b @(r0,r4),r4 |
64 | add r4,r0 | |
1aad54a9 | 65 | jmp @r0 |
940d4113 | 66 | mov.l @r15+,r0 |
1aad54a9 PM |
67 | |
68 | .align 2 | |
69 | lshrsi3_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 | ||
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 |