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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
3 | Copyright 2002 Free Software Foundation, Inc. | |
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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | ||
25 | #ifndef _SIM_BITS_C_ | |
26 | #define _SIM_BITS_C_ | |
27 | ||
28 | #include "sim-basics.h" | |
29 | #include "sim-assert.h" | |
30 | #include "sim-io.h" | |
31 | ||
32 | ||
33 | INLINE_SIM_BITS\ | |
34 | (unsigned_word) | |
35 | LSMASKED (unsigned_word val, | |
36 | int start, | |
37 | int stop) | |
38 | { | |
39 | /* NOTE - start, stop can wrap */ | |
40 | val &= LSMASK (start, stop); | |
41 | return val; | |
42 | } | |
43 | ||
44 | ||
45 | INLINE_SIM_BITS\ | |
46 | (unsigned_word) | |
47 | MSMASKED (unsigned_word val, | |
48 | int start, | |
49 | int stop) | |
50 | { | |
51 | /* NOTE - start, stop can wrap */ | |
52 | val &= MSMASK (start, stop); | |
53 | return val; | |
54 | } | |
55 | ||
56 | ||
57 | INLINE_SIM_BITS\ | |
58 | (unsigned_word) | |
59 | LSEXTRACTED (unsigned_word val, | |
60 | int start, | |
61 | int stop) | |
62 | { | |
63 | ASSERT (start >= stop); | |
64 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
65 | return LSEXTRACTED64 (val, start, stop); | |
66 | #endif | |
67 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
68 | if (stop >= 32) | |
69 | return 0; | |
70 | else | |
71 | { | |
72 | if (start < 32) | |
73 | val &= LSMASK (start, 0); | |
74 | val >>= stop; | |
75 | return val; | |
76 | } | |
77 | #endif | |
3c765a54 AC |
78 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
79 | if (stop >= 16) | |
80 | return 0; | |
81 | else | |
82 | { | |
83 | if (start < 16) | |
84 | val &= LSMASK (start, 0); | |
85 | val >>= stop; | |
86 | return val; | |
87 | } | |
88 | #endif | |
c906108c SS |
89 | } |
90 | ||
91 | ||
92 | INLINE_SIM_BITS\ | |
93 | (unsigned_word) | |
94 | MSEXTRACTED (unsigned_word val, | |
95 | int start, | |
96 | int stop) | |
97 | { | |
98 | ASSERT (start <= stop); | |
99 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
100 | return MSEXTRACTED64 (val, start, stop); | |
101 | #endif | |
102 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
103 | if (stop < 32) | |
104 | return 0; | |
105 | else | |
106 | { | |
107 | if (start >= 32) | |
108 | val &= MSMASK (start, 64 - 1); | |
109 | val >>= (64 - stop - 1); | |
110 | return val; | |
111 | } | |
112 | #endif | |
3c765a54 AC |
113 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
114 | if (stop < 16) | |
115 | return 0; | |
116 | else | |
117 | { | |
118 | if (start >= 16) | |
119 | val &= MSMASK (start, 64 - 1); | |
120 | val >>= (64 - stop - 1); | |
121 | return val; | |
122 | } | |
123 | #endif | |
c906108c SS |
124 | } |
125 | ||
126 | ||
127 | INLINE_SIM_BITS\ | |
128 | (unsigned_word) | |
129 | LSINSERTED (unsigned_word val, | |
130 | int start, | |
131 | int stop) | |
132 | { | |
133 | ASSERT (start >= stop); | |
134 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
135 | return LSINSERTED64 (val, start, stop); | |
136 | #endif | |
137 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
138 | /* Bit numbers are 63..0, even for 32 bit targets. | |
139 | On 32 bit targets we ignore 63..32 */ | |
140 | if (stop >= 32) | |
141 | return 0; | |
142 | else | |
143 | { | |
144 | val <<= stop; | |
145 | val &= LSMASK (start, stop); | |
146 | return val; | |
147 | } | |
148 | #endif | |
3c765a54 AC |
149 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
150 | /* Bit numbers are 63..0, even for 16 bit targets. | |
151 | On 16 bit targets we ignore 63..16 */ | |
152 | if (stop >= 16) | |
153 | return 0; | |
154 | else | |
155 | { | |
156 | val <<= stop; | |
157 | val &= LSMASK (start, stop); | |
158 | return val; | |
159 | } | |
160 | #endif | |
c906108c SS |
161 | } |
162 | ||
163 | INLINE_SIM_BITS\ | |
164 | (unsigned_word) | |
165 | MSINSERTED (unsigned_word val, | |
166 | int start, | |
167 | int stop) | |
168 | { | |
169 | ASSERT (start <= stop); | |
170 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
171 | return MSINSERTED64 (val, start, stop); | |
172 | #endif | |
173 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
174 | /* Bit numbers are 0..63, even for 32 bit targets. | |
175 | On 32 bit targets we ignore 0..31. */ | |
176 | if (stop < 32) | |
177 | return 0; | |
178 | else | |
179 | { | |
180 | val <<= ((64 - 1) - stop); | |
181 | val &= MSMASK (start, stop); | |
182 | return val; | |
183 | } | |
184 | #endif | |
3c765a54 AC |
185 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
186 | /* Bit numbers are 0..63, even for 16 bit targets. | |
187 | On 16 bit targets we ignore 0..47. */ | |
188 | if (stop < 32 + 16) | |
189 | return 0; | |
190 | else | |
191 | { | |
192 | val <<= ((64 - 1) - stop); | |
193 | val &= MSMASK (start, stop); | |
194 | return val; | |
195 | } | |
196 | #endif | |
c906108c SS |
197 | } |
198 | ||
199 | ||
200 | ||
201 | INLINE_SIM_BITS\ | |
202 | (unsigned_word) | |
203 | LSSEXT (signed_word val, | |
204 | int sign_bit) | |
205 | { | |
206 | ASSERT (sign_bit < 64); | |
207 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
208 | return LSSEXT64 (val, sign_bit); | |
209 | #endif | |
210 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
211 | if (sign_bit >= 32) | |
212 | return val; | |
213 | else { | |
214 | val = LSSEXT32 (val, sign_bit); | |
215 | return val; | |
216 | } | |
217 | #endif | |
3c765a54 AC |
218 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
219 | if (sign_bit >= 16) | |
220 | return val; | |
221 | else { | |
222 | val = LSSEXT16 (val, sign_bit); | |
223 | return val; | |
224 | } | |
225 | #endif | |
c906108c SS |
226 | } |
227 | ||
228 | INLINE_SIM_BITS\ | |
229 | (unsigned_word) | |
230 | MSSEXT (signed_word val, | |
231 | int sign_bit) | |
232 | { | |
233 | ASSERT (sign_bit < 64); | |
234 | #if (WITH_TARGET_WORD_BITSIZE == 64) | |
235 | return MSSEXT64 (val, sign_bit); | |
236 | #endif | |
237 | #if (WITH_TARGET_WORD_BITSIZE == 32) | |
238 | if (sign_bit < 32) | |
239 | return val; | |
240 | else { | |
241 | val = MSSEXT32 (val, sign_bit - 32); | |
242 | return val; | |
243 | } | |
244 | #endif | |
3c765a54 AC |
245 | #if (WITH_TARGET_WORD_BITSIZE == 16) |
246 | if (sign_bit < 32 + 16) | |
247 | return val; | |
248 | else { | |
249 | val = MSSEXT16 (val, sign_bit - 32 - 16); | |
250 | return val; | |
251 | } | |
252 | #endif | |
c906108c SS |
253 | } |
254 | ||
255 | ||
256 | ||
257 | #define N 8 | |
258 | #include "sim-n-bits.h" | |
259 | #undef N | |
260 | ||
261 | #define N 16 | |
262 | #include "sim-n-bits.h" | |
263 | #undef N | |
264 | ||
265 | #define N 32 | |
266 | #include "sim-n-bits.h" | |
267 | #undef N | |
268 | ||
269 | #define N 64 | |
270 | #include "sim-n-bits.h" | |
271 | #undef N | |
272 | ||
273 | #endif /* _SIM_BITS_C_ */ |