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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 | ! __ashlsi3 | |
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 | ! | |
57 | .global __ashlsi3 | |
58 | ||
59 | .align 2 | |
60 | __ashlsi3: | |
61 | mov #31,r0 | |
62 | and r0,r5 | |
63 | mova ashlsi3_table,r0 | |
64 | mov.b @(r0,r5),r5 | |
65 | #ifdef __sh1__ | |
66 | add r5,r0 | |
67 | jmp @r0 | |
68 | #else | |
69 | braf r5 | |
70 | #endif | |
71 | mov r4,r0 | |
72 | ||
73 | .align 2 | |
74 | ashlsi3_table: | |
75 | .byte ashlsi3_0-ashlsi3_table | |
76 | .byte ashlsi3_1-ashlsi3_table | |
77 | .byte ashlsi3_2-ashlsi3_table | |
78 | .byte ashlsi3_3-ashlsi3_table | |
79 | .byte ashlsi3_4-ashlsi3_table | |
80 | .byte ashlsi3_5-ashlsi3_table | |
81 | .byte ashlsi3_6-ashlsi3_table | |
82 | .byte ashlsi3_7-ashlsi3_table | |
83 | .byte ashlsi3_8-ashlsi3_table | |
84 | .byte ashlsi3_9-ashlsi3_table | |
85 | .byte ashlsi3_10-ashlsi3_table | |
86 | .byte ashlsi3_11-ashlsi3_table | |
87 | .byte ashlsi3_12-ashlsi3_table | |
88 | .byte ashlsi3_13-ashlsi3_table | |
89 | .byte ashlsi3_14-ashlsi3_table | |
90 | .byte ashlsi3_15-ashlsi3_table | |
91 | .byte ashlsi3_16-ashlsi3_table | |
92 | .byte ashlsi3_17-ashlsi3_table | |
93 | .byte ashlsi3_18-ashlsi3_table | |
94 | .byte ashlsi3_19-ashlsi3_table | |
95 | .byte ashlsi3_20-ashlsi3_table | |
96 | .byte ashlsi3_21-ashlsi3_table | |
97 | .byte ashlsi3_22-ashlsi3_table | |
98 | .byte ashlsi3_23-ashlsi3_table | |
99 | .byte ashlsi3_24-ashlsi3_table | |
100 | .byte ashlsi3_25-ashlsi3_table | |
101 | .byte ashlsi3_26-ashlsi3_table | |
102 | .byte ashlsi3_27-ashlsi3_table | |
103 | .byte ashlsi3_28-ashlsi3_table | |
104 | .byte ashlsi3_29-ashlsi3_table | |
105 | .byte ashlsi3_30-ashlsi3_table | |
106 | .byte ashlsi3_31-ashlsi3_table | |
107 | ||
108 | ashlsi3_6: | |
109 | shll2 r0 | |
110 | ashlsi3_4: | |
111 | shll2 r0 | |
112 | ashlsi3_2: | |
113 | rts | |
114 | shll2 r0 | |
115 | ||
116 | ashlsi3_7: | |
117 | shll2 r0 | |
118 | ashlsi3_5: | |
119 | shll2 r0 | |
120 | ashlsi3_3: | |
121 | shll2 r0 | |
122 | ashlsi3_1: | |
123 | rts | |
124 | shll r0 | |
125 | ||
126 | ashlsi3_14: | |
127 | shll2 r0 | |
128 | ashlsi3_12: | |
129 | shll2 r0 | |
130 | ashlsi3_10: | |
131 | shll2 r0 | |
132 | ashlsi3_8: | |
133 | rts | |
134 | shll8 r0 | |
135 | ||
136 | ashlsi3_15: | |
137 | shll2 r0 | |
138 | ashlsi3_13: | |
139 | shll2 r0 | |
140 | ashlsi3_11: | |
141 | shll2 r0 | |
142 | ashlsi3_9: | |
143 | shll8 r0 | |
144 | rts | |
145 | shll r0 | |
146 | ||
147 | ashlsi3_22: | |
148 | shll2 r0 | |
149 | ashlsi3_20: | |
150 | shll2 r0 | |
151 | ashlsi3_18: | |
152 | shll2 r0 | |
153 | ashlsi3_16: | |
154 | rts | |
155 | shll16 r0 | |
156 | ||
157 | ashlsi3_23: | |
158 | shll2 r0 | |
159 | ashlsi3_21: | |
160 | shll2 r0 | |
161 | ashlsi3_19: | |
162 | shll2 r0 | |
163 | ashlsi3_17: | |
164 | shll16 r0 | |
165 | rts | |
166 | shll r0 | |
167 | ||
168 | ashlsi3_30: | |
169 | shll2 r0 | |
170 | ashlsi3_28: | |
171 | shll2 r0 | |
172 | ashlsi3_26: | |
173 | shll2 r0 | |
174 | ashlsi3_24: | |
175 | shll16 r0 | |
176 | rts | |
177 | shll8 r0 | |
178 | ||
179 | ashlsi3_31: | |
180 | shll2 r0 | |
181 | ashlsi3_29: | |
182 | shll2 r0 | |
183 | ashlsi3_27: | |
184 | shll2 r0 | |
185 | ashlsi3_25: | |
186 | shll16 r0 | |
187 | shll8 r0 | |
188 | rts | |
189 | shll r0 | |
190 | ||
191 | ashlsi3_0: | |
192 | rts | |
193 | nop |