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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
3666a048 | 3 | Copyright 2002-2021 Free Software Foundation, Inc. |
b85e4829 AC |
4 | |
5 | Contributed by Andrew Cagney and Red Hat. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
4744ac1b | 11 | the Free Software Foundation; either version 3 of the License, or |
b85e4829 AC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
4744ac1b | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | ||
23 | #ifndef _SIM_BITS_C_ | |
24 | #define _SIM_BITS_C_ | |
25 | ||
6df01ab8 MF |
26 | /* This must come before any other includes. */ |
27 | #include "defs.h" | |
28 | ||
c906108c SS |
29 | #include "sim-basics.h" |
30 | #include "sim-assert.h" | |
31 | #include "sim-io.h" | |
32 | ||
33 | ||
34 | INLINE_SIM_BITS\ | |
35 | (unsigned_word) | |
36 | LSMASKED (unsigned_word val, | |
37 | int start, | |
38 | int stop) | |
39 | { | |
40 | /* NOTE - start, stop can wrap */ | |
41 | val &= LSMASK (start, stop); | |
42 | return val; | |
43 | } | |
44 | ||
45 | ||
46 | INLINE_SIM_BITS\ | |
47 | (unsigned_word) | |
48 | MSMASKED (unsigned_word val, | |
49 | int start, | |
50 | int stop) | |
51 | { | |
52 | /* NOTE - start, stop can wrap */ | |
53 | val &= MSMASK (start, stop); | |
54 | return val; | |
55 | } | |
56 | ||
57 | ||
58 | INLINE_SIM_BITS\ | |
59 | (unsigned_word) | |
60 | LSEXTRACTED (unsigned_word val, | |
61 | int start, | |
62 | int stop) | |
63 | { | |
64 | ASSERT (start >= stop); | |
65 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
66 | return LSEXTRACTED64 (val, start, stop); | |
67 | #endif | |
68 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
69 | if (stop >= 32) | |
70 | return 0; | |
71 | else | |
72 | { | |
73 | if (start < 32) | |
74 | val &= LSMASK (start, 0); | |
75 | val >>= stop; | |
76 | return val; | |
77 | } | |
78 | #endif | |
3c765a54 AC |
79 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
80 | if (stop >= 16) | |
81 | return 0; | |
82 | else | |
83 | { | |
84 | if (start < 16) | |
85 | val &= LSMASK (start, 0); | |
86 | val >>= stop; | |
87 | return val; | |
88 | } | |
89 | #endif | |
c906108c SS |
90 | } |
91 | ||
92 | ||
93 | INLINE_SIM_BITS\ | |
94 | (unsigned_word) | |
95 | MSEXTRACTED (unsigned_word val, | |
96 | int start, | |
97 | int stop) | |
98 | { | |
99 | ASSERT (start <= stop); | |
100 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
101 | return MSEXTRACTED64 (val, start, stop); | |
102 | #endif | |
103 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
104 | if (stop < 32) | |
105 | return 0; | |
106 | else | |
107 | { | |
108 | if (start >= 32) | |
109 | val &= MSMASK (start, 64 - 1); | |
110 | val >>= (64 - stop - 1); | |
111 | return val; | |
112 | } | |
113 | #endif | |
3c765a54 AC |
114 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
115 | if (stop < 16) | |
116 | return 0; | |
117 | else | |
118 | { | |
119 | if (start >= 16) | |
120 | val &= MSMASK (start, 64 - 1); | |
121 | val >>= (64 - stop - 1); | |
122 | return val; | |
123 | } | |
124 | #endif | |
c906108c SS |
125 | } |
126 | ||
127 | ||
128 | INLINE_SIM_BITS\ | |
129 | (unsigned_word) | |
130 | LSINSERTED (unsigned_word val, | |
131 | int start, | |
132 | int stop) | |
133 | { | |
134 | ASSERT (start >= stop); | |
135 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
136 | return LSINSERTED64 (val, start, stop); | |
137 | #endif | |
138 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
139 | /* Bit numbers are 63..0, even for 32 bit targets. | |
140 | On 32 bit targets we ignore 63..32 */ | |
141 | if (stop >= 32) | |
142 | return 0; | |
143 | else | |
144 | { | |
145 | val <<= stop; | |
146 | val &= LSMASK (start, stop); | |
147 | return val; | |
148 | } | |
149 | #endif | |
3c765a54 AC |
150 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
151 | /* Bit numbers are 63..0, even for 16 bit targets. | |
152 | On 16 bit targets we ignore 63..16 */ | |
153 | if (stop >= 16) | |
154 | return 0; | |
155 | else | |
156 | { | |
157 | val <<= stop; | |
158 | val &= LSMASK (start, stop); | |
159 | return val; | |
160 | } | |
161 | #endif | |
c906108c SS |
162 | } |
163 | ||
164 | INLINE_SIM_BITS\ | |
165 | (unsigned_word) | |
166 | MSINSERTED (unsigned_word val, | |
167 | int start, | |
168 | int stop) | |
169 | { | |
170 | ASSERT (start <= stop); | |
171 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
172 | return MSINSERTED64 (val, start, stop); | |
173 | #endif | |
174 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
175 | /* Bit numbers are 0..63, even for 32 bit targets. | |
176 | On 32 bit targets we ignore 0..31. */ | |
177 | if (stop < 32) | |
178 | return 0; | |
179 | else | |
180 | { | |
181 | val <<= ((64 - 1) - stop); | |
182 | val &= MSMASK (start, stop); | |
183 | return val; | |
184 | } | |
185 | #endif | |
3c765a54 AC |
186 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
187 | /* Bit numbers are 0..63, even for 16 bit targets. | |
188 | On 16 bit targets we ignore 0..47. */ | |
189 | if (stop < 32 + 16) | |
190 | return 0; | |
191 | else | |
192 | { | |
193 | val <<= ((64 - 1) - stop); | |
194 | val &= MSMASK (start, stop); | |
195 | return val; | |
196 | } | |
197 | #endif | |
c906108c SS |
198 | } |
199 | ||
200 | ||
201 | ||
202 | INLINE_SIM_BITS\ | |
203 | (unsigned_word) | |
204 | LSSEXT (signed_word val, | |
205 | int sign_bit) | |
206 | { | |
207 | ASSERT (sign_bit < 64); | |
208 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
209 | return LSSEXT64 (val, sign_bit); | |
210 | #endif | |
211 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
212 | if (sign_bit >= 32) | |
213 | return val; | |
214 | else { | |
215 | val = LSSEXT32 (val, sign_bit); | |
216 | return val; | |
217 | } | |
218 | #endif | |
3c765a54 AC |
219 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
220 | if (sign_bit >= 16) | |
221 | return val; | |
222 | else { | |
223 | val = LSSEXT16 (val, sign_bit); | |
224 | return val; | |
225 | } | |
226 | #endif | |
c906108c SS |
227 | } |
228 | ||
229 | INLINE_SIM_BITS\ | |
230 | (unsigned_word) | |
231 | MSSEXT (signed_word val, | |
232 | int sign_bit) | |
233 | { | |
234 | ASSERT (sign_bit < 64); | |
235 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
236 | return MSSEXT64 (val, sign_bit); | |
237 | #endif | |
238 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
239 | if (sign_bit < 32) | |
240 | return val; | |
241 | else { | |
242 | val = MSSEXT32 (val, sign_bit - 32); | |
243 | return val; | |
244 | } | |
245 | #endif | |
3c765a54 AC |
246 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
247 | if (sign_bit < 32 + 16) | |
248 | return val; | |
249 | else { | |
250 | val = MSSEXT16 (val, sign_bit - 32 - 16); | |
251 | return val; | |
252 | } | |
253 | #endif | |
c906108c SS |
254 | } |
255 | ||
256 | ||
257 | ||
258 | #define N 8 | |
259 | #include "sim-n-bits.h" | |
260 | #undef N | |
261 | ||
262 | #define N 16 | |
263 | #include "sim-n-bits.h" | |
264 | #undef N | |
265 | ||
266 | #define N 32 | |
267 | #include "sim-n-bits.h" | |
268 | #undef N | |
269 | ||
270 | #define N 64 | |
271 | #include "sim-n-bits.h" | |
272 | #undef N | |
273 | ||
274 | #endif /* _SIM_BITS_C_ */ |