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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #ifndef _SIM_BITS_C_ | |
23 | #define _SIM_BITS_C_ | |
24 | ||
25 | #include "sim-basics.h" | |
26 | #include "sim-assert.h" | |
27 | #include "sim-io.h" | |
28 | ||
29 | ||
30 | INLINE_SIM_BITS\ | |
31 | (unsigned_word) | |
32 | LSMASKED (unsigned_word val, | |
33 | int start, | |
34 | int stop) | |
35 | { | |
36 | /* NOTE - start, stop can wrap */ | |
37 | val &= LSMASK (start, stop); | |
38 | return val; | |
39 | } | |
40 | ||
41 | ||
42 | INLINE_SIM_BITS\ | |
43 | (unsigned_word) | |
44 | MSMASKED (unsigned_word val, | |
45 | int start, | |
46 | int stop) | |
47 | { | |
48 | /* NOTE - start, stop can wrap */ | |
49 | val &= MSMASK (start, stop); | |
50 | return val; | |
51 | } | |
52 | ||
53 | ||
54 | INLINE_SIM_BITS\ | |
55 | (unsigned_word) | |
56 | LSEXTRACTED (unsigned_word val, | |
57 | int start, | |
58 | int stop) | |
59 | { | |
60 | ASSERT (start >= stop); | |
61 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
62 | return LSEXTRACTED64 (val, start, stop); | |
63 | #endif | |
64 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
65 | if (stop >= 32) | |
66 | return 0; | |
67 | else | |
68 | { | |
69 | if (start < 32) | |
70 | val &= LSMASK (start, 0); | |
71 | val >>= stop; | |
72 | return val; | |
73 | } | |
74 | #endif | |
3c765a54 AC |
75 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
76 | if (stop >= 16) | |
77 | return 0; | |
78 | else | |
79 | { | |
80 | if (start < 16) | |
81 | val &= LSMASK (start, 0); | |
82 | val >>= stop; | |
83 | return val; | |
84 | } | |
85 | #endif | |
c906108c SS |
86 | } |
87 | ||
88 | ||
89 | INLINE_SIM_BITS\ | |
90 | (unsigned_word) | |
91 | MSEXTRACTED (unsigned_word val, | |
92 | int start, | |
93 | int stop) | |
94 | { | |
95 | ASSERT (start <= stop); | |
96 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
97 | return MSEXTRACTED64 (val, start, stop); | |
98 | #endif | |
99 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
100 | if (stop < 32) | |
101 | return 0; | |
102 | else | |
103 | { | |
104 | if (start >= 32) | |
105 | val &= MSMASK (start, 64 - 1); | |
106 | val >>= (64 - stop - 1); | |
107 | return val; | |
108 | } | |
109 | #endif | |
3c765a54 AC |
110 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
111 | if (stop < 16) | |
112 | return 0; | |
113 | else | |
114 | { | |
115 | if (start >= 16) | |
116 | val &= MSMASK (start, 64 - 1); | |
117 | val >>= (64 - stop - 1); | |
118 | return val; | |
119 | } | |
120 | #endif | |
c906108c SS |
121 | } |
122 | ||
123 | ||
124 | INLINE_SIM_BITS\ | |
125 | (unsigned_word) | |
126 | LSINSERTED (unsigned_word val, | |
127 | int start, | |
128 | int stop) | |
129 | { | |
130 | ASSERT (start >= stop); | |
131 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
132 | return LSINSERTED64 (val, start, stop); | |
133 | #endif | |
134 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
135 | /* Bit numbers are 63..0, even for 32 bit targets. | |
136 | On 32 bit targets we ignore 63..32 */ | |
137 | if (stop >= 32) | |
138 | return 0; | |
139 | else | |
140 | { | |
141 | val <<= stop; | |
142 | val &= LSMASK (start, stop); | |
143 | return val; | |
144 | } | |
145 | #endif | |
3c765a54 AC |
146 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
147 | /* Bit numbers are 63..0, even for 16 bit targets. | |
148 | On 16 bit targets we ignore 63..16 */ | |
149 | if (stop >= 16) | |
150 | return 0; | |
151 | else | |
152 | { | |
153 | val <<= stop; | |
154 | val &= LSMASK (start, stop); | |
155 | return val; | |
156 | } | |
157 | #endif | |
c906108c SS |
158 | } |
159 | ||
160 | INLINE_SIM_BITS\ | |
161 | (unsigned_word) | |
162 | MSINSERTED (unsigned_word val, | |
163 | int start, | |
164 | int stop) | |
165 | { | |
166 | ASSERT (start <= stop); | |
167 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
168 | return MSINSERTED64 (val, start, stop); | |
169 | #endif | |
170 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
171 | /* Bit numbers are 0..63, even for 32 bit targets. | |
172 | On 32 bit targets we ignore 0..31. */ | |
173 | if (stop < 32) | |
174 | return 0; | |
175 | else | |
176 | { | |
177 | val <<= ((64 - 1) - stop); | |
178 | val &= MSMASK (start, stop); | |
179 | return val; | |
180 | } | |
181 | #endif | |
3c765a54 AC |
182 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
183 | /* Bit numbers are 0..63, even for 16 bit targets. | |
184 | On 16 bit targets we ignore 0..47. */ | |
185 | if (stop < 32 + 16) | |
186 | return 0; | |
187 | else | |
188 | { | |
189 | val <<= ((64 - 1) - stop); | |
190 | val &= MSMASK (start, stop); | |
191 | return val; | |
192 | } | |
193 | #endif | |
c906108c SS |
194 | } |
195 | ||
196 | ||
197 | ||
198 | INLINE_SIM_BITS\ | |
199 | (unsigned_word) | |
200 | LSSEXT (signed_word val, | |
201 | int sign_bit) | |
202 | { | |
203 | ASSERT (sign_bit < 64); | |
204 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
205 | return LSSEXT64 (val, sign_bit); | |
206 | #endif | |
207 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
208 | if (sign_bit >= 32) | |
209 | return val; | |
210 | else { | |
211 | val = LSSEXT32 (val, sign_bit); | |
212 | return val; | |
213 | } | |
214 | #endif | |
3c765a54 AC |
215 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
216 | if (sign_bit >= 16) | |
217 | return val; | |
218 | else { | |
219 | val = LSSEXT16 (val, sign_bit); | |
220 | return val; | |
221 | } | |
222 | #endif | |
c906108c SS |
223 | } |
224 | ||
225 | INLINE_SIM_BITS\ | |
226 | (unsigned_word) | |
227 | MSSEXT (signed_word val, | |
228 | int sign_bit) | |
229 | { | |
230 | ASSERT (sign_bit < 64); | |
231 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
232 | return MSSEXT64 (val, sign_bit); | |
233 | #endif | |
234 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
235 | if (sign_bit < 32) | |
236 | return val; | |
237 | else { | |
238 | val = MSSEXT32 (val, sign_bit - 32); | |
239 | return val; | |
240 | } | |
241 | #endif | |
3c765a54 AC |
242 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
243 | if (sign_bit < 32 + 16) | |
244 | return val; | |
245 | else { | |
246 | val = MSSEXT16 (val, sign_bit - 32 - 16); | |
247 | return val; | |
248 | } | |
249 | #endif | |
c906108c SS |
250 | } |
251 | ||
252 | ||
253 | ||
254 | #define N 8 | |
255 | #include "sim-n-bits.h" | |
256 | #undef N | |
257 | ||
258 | #define N 16 | |
259 | #include "sim-n-bits.h" | |
260 | #undef N | |
261 | ||
262 | #define N 32 | |
263 | #include "sim-n-bits.h" | |
264 | #undef N | |
265 | ||
266 | #define N 64 | |
267 | #include "sim-n-bits.h" | |
268 | #undef N | |
269 | ||
270 | #endif /* _SIM_BITS_C_ */ |