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1aad54a9 PM |
1 | /* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
2 | 2004, 2005, 2006 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is free software; you can redistribute it and/or modify it | |
6 | under the terms of the GNU General Public License as published by the | |
7 | Free Software Foundation; either version 2, or (at your option) any | |
8 | later version. | |
9 | ||
10 | In addition to the permissions in the GNU General Public License, the | |
11 | Free Software Foundation gives you unlimited permission to link the | |
12 | compiled version of this file into combinations with other programs, | |
13 | and to distribute those combinations without any restriction coming | |
14 | from the use of this file. (The General Public License restrictions | |
15 | do apply in other respects; for example, they cover modification of | |
16 | the file, and distribution when not linked into a combine | |
17 | executable.) | |
18 | ||
19 | This file is distributed in the hope that it will be useful, but | |
20 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
22 | General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU General Public License | |
25 | along with this program; see the file COPYING. If not, write to | |
26 | the Free Software Foundation, 51 Franklin Street, Fifth Floor, | |
27 | Boston, MA 02110-1301, USA. */ | |
28 | ||
29 | !! libgcc routines for the Renesas / SuperH SH CPUs. | |
30 | !! Contributed by Steve Chamberlain. | |
31 | !! sac@cygnus.com | |
32 | ||
33 | !! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines | |
34 | !! recoded in assembly by Toshiyasu Morita | |
35 | !! tm@netcom.com | |
36 | ||
37 | /* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and | |
38 | ELF local label prefixes by J"orn Rennecke | |
39 | amylaar@cygnus.com */ | |
40 | ||
41 | ! | |
42 | ! __ashrsi3 | |
43 | ! | |
44 | ! Entry: | |
45 | ! | |
46 | ! r4: Value to shift | |
47 | ! r5: Shifts | |
48 | ! | |
49 | ! Exit: | |
50 | ! | |
51 | ! r0: Result | |
52 | ! | |
53 | ! Destroys: | |
54 | ! | |
55 | ! (none) | |
56 | ! | |
940d4113 YS |
57 | ! __ashrsi3_r0 |
58 | ! | |
59 | ! Entry: | |
60 | ! | |
61 | ! r4: Value to shift | |
62 | ! r0: Shifts | |
63 | ! | |
64 | ! Exit: | |
65 | ! | |
66 | ! r0: Result | |
67 | ! | |
68 | ! Destroys: | |
69 | ! | |
70 | ! (none) | |
1aad54a9 PM |
71 | |
72 | .global __ashrsi3 | |
940d4113 | 73 | .global __ashrsi3_r0 |
1aad54a9 PM |
74 | |
75 | .align 2 | |
76 | __ashrsi3: | |
940d4113 YS |
77 | mov r5,r0 |
78 | .align 2 | |
79 | __ashrsi3_r0: | |
80 | and #31,r0 | |
81 | mov.l r4,@-r15 | |
82 | mov r0,r4 | |
1aad54a9 | 83 | mova ashrsi3_table,r0 |
940d4113 YS |
84 | mov.b @(r0,r4),r4 |
85 | add r4,r0 | |
1aad54a9 | 86 | jmp @r0 |
940d4113 | 87 | mov.l @r15+,r0 |
1aad54a9 PM |
88 | |
89 | .align 2 | |
90 | ashrsi3_table: | |
91 | .byte ashrsi3_0-ashrsi3_table | |
92 | .byte ashrsi3_1-ashrsi3_table | |
93 | .byte ashrsi3_2-ashrsi3_table | |
94 | .byte ashrsi3_3-ashrsi3_table | |
95 | .byte ashrsi3_4-ashrsi3_table | |
96 | .byte ashrsi3_5-ashrsi3_table | |
97 | .byte ashrsi3_6-ashrsi3_table | |
98 | .byte ashrsi3_7-ashrsi3_table | |
99 | .byte ashrsi3_8-ashrsi3_table | |
100 | .byte ashrsi3_9-ashrsi3_table | |
101 | .byte ashrsi3_10-ashrsi3_table | |
102 | .byte ashrsi3_11-ashrsi3_table | |
103 | .byte ashrsi3_12-ashrsi3_table | |
104 | .byte ashrsi3_13-ashrsi3_table | |
105 | .byte ashrsi3_14-ashrsi3_table | |
106 | .byte ashrsi3_15-ashrsi3_table | |
107 | .byte ashrsi3_16-ashrsi3_table | |
108 | .byte ashrsi3_17-ashrsi3_table | |
109 | .byte ashrsi3_18-ashrsi3_table | |
110 | .byte ashrsi3_19-ashrsi3_table | |
111 | .byte ashrsi3_20-ashrsi3_table | |
112 | .byte ashrsi3_21-ashrsi3_table | |
113 | .byte ashrsi3_22-ashrsi3_table | |
114 | .byte ashrsi3_23-ashrsi3_table | |
115 | .byte ashrsi3_24-ashrsi3_table | |
116 | .byte ashrsi3_25-ashrsi3_table | |
117 | .byte ashrsi3_26-ashrsi3_table | |
118 | .byte ashrsi3_27-ashrsi3_table | |
119 | .byte ashrsi3_28-ashrsi3_table | |
120 | .byte ashrsi3_29-ashrsi3_table | |
121 | .byte ashrsi3_30-ashrsi3_table | |
122 | .byte ashrsi3_31-ashrsi3_table | |
123 | ||
124 | ashrsi3_31: | |
125 | rotcl r0 | |
126 | rts | |
127 | subc r0,r0 | |
128 | ||
129 | ashrsi3_30: | |
130 | shar r0 | |
131 | ashrsi3_29: | |
132 | shar r0 | |
133 | ashrsi3_28: | |
134 | shar r0 | |
135 | ashrsi3_27: | |
136 | shar r0 | |
137 | ashrsi3_26: | |
138 | shar r0 | |
139 | ashrsi3_25: | |
140 | shar r0 | |
141 | ashrsi3_24: | |
142 | shlr16 r0 | |
143 | shlr8 r0 | |
144 | rts | |
145 | exts.b r0,r0 | |
146 | ||
147 | ashrsi3_23: | |
148 | shar r0 | |
149 | ashrsi3_22: | |
150 | shar r0 | |
151 | ashrsi3_21: | |
152 | shar r0 | |
153 | ashrsi3_20: | |
154 | shar r0 | |
155 | ashrsi3_19: | |
156 | shar r0 | |
157 | ashrsi3_18: | |
158 | shar r0 | |
159 | ashrsi3_17: | |
160 | shar r0 | |
161 | ashrsi3_16: | |
162 | shlr16 r0 | |
163 | rts | |
164 | exts.w r0,r0 | |
165 | ||
166 | ashrsi3_15: | |
167 | shar r0 | |
168 | ashrsi3_14: | |
169 | shar r0 | |
170 | ashrsi3_13: | |
171 | shar r0 | |
172 | ashrsi3_12: | |
173 | shar r0 | |
174 | ashrsi3_11: | |
175 | shar r0 | |
176 | ashrsi3_10: | |
177 | shar r0 | |
178 | ashrsi3_9: | |
179 | shar r0 | |
180 | ashrsi3_8: | |
181 | shar r0 | |
182 | ashrsi3_7: | |
183 | shar r0 | |
184 | ashrsi3_6: | |
185 | shar r0 | |
186 | ashrsi3_5: | |
187 | shar r0 | |
188 | ashrsi3_4: | |
189 | shar r0 | |
190 | ashrsi3_3: | |
191 | shar r0 | |
192 | ashrsi3_2: | |
193 | shar r0 | |
194 | ashrsi3_1: | |
195 | rts | |
196 | shar r0 | |
197 | ||
198 | ashrsi3_0: | |
199 | rts | |
200 | nop |