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42a4f53d | 1 | /* Copyright (C) 1986-2019 Free Software Foundation, Inc. |
4c74fe6b YQ |
2 | |
3 | This file is part of GDB. | |
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 3 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, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include "defs.h" | |
19 | #include "gdbcmd.h" | |
20 | #include "regcache.h" | |
21 | #include "common/def-vector.h" | |
22 | #include "valprint.h" | |
23 | #include "remote.h" | |
24 | #include "reggroups.h" | |
25 | #include "target.h" | |
26 | ||
27 | /* Dump registers from regcache, used for dumping raw registers and | |
28 | cooked registers. */ | |
29 | ||
30 | class register_dump_regcache : public register_dump | |
31 | { | |
32 | public: | |
33 | register_dump_regcache (regcache *regcache, bool dump_pseudo) | |
34 | : register_dump (regcache->arch ()), m_regcache (regcache), | |
35 | m_dump_pseudo (dump_pseudo) | |
36 | { | |
37 | } | |
38 | ||
39 | protected: | |
40 | void dump_reg (ui_file *file, int regnum) override | |
41 | { | |
42 | if (regnum < 0) | |
43 | { | |
44 | if (m_dump_pseudo) | |
45 | fprintf_unfiltered (file, "Cooked value"); | |
46 | else | |
47 | fprintf_unfiltered (file, "Raw value"); | |
48 | } | |
49 | else | |
50 | { | |
51 | if (regnum < gdbarch_num_regs (m_gdbarch) || m_dump_pseudo) | |
52 | { | |
53 | auto size = register_size (m_gdbarch, regnum); | |
54 | ||
55 | if (size == 0) | |
56 | return; | |
57 | ||
58 | gdb::def_vector<gdb_byte> buf (size); | |
59 | auto status = m_regcache->cooked_read (regnum, buf.data ()); | |
60 | ||
61 | if (status == REG_UNKNOWN) | |
62 | fprintf_unfiltered (file, "<invalid>"); | |
63 | else if (status == REG_UNAVAILABLE) | |
64 | fprintf_unfiltered (file, "<unavailable>"); | |
65 | else | |
66 | { | |
67 | print_hex_chars (file, buf.data (), size, | |
68 | gdbarch_byte_order (m_gdbarch), true); | |
69 | } | |
70 | } | |
71 | else | |
72 | { | |
73 | /* Just print "<cooked>" for pseudo register when | |
74 | regcache_dump_raw. */ | |
75 | fprintf_unfiltered (file, "<cooked>"); | |
76 | } | |
77 | } | |
78 | } | |
79 | ||
80 | private: | |
81 | regcache *m_regcache; | |
82 | ||
83 | /* Dump pseudo registers or not. */ | |
84 | const bool m_dump_pseudo; | |
85 | }; | |
86 | ||
87 | /* Dump from reg_buffer, used when there is no thread or | |
88 | registers. */ | |
89 | ||
90 | class register_dump_reg_buffer : public register_dump, reg_buffer | |
91 | { | |
92 | public: | |
93 | register_dump_reg_buffer (gdbarch *gdbarch, bool dump_pseudo) | |
94 | : register_dump (gdbarch), reg_buffer (gdbarch, dump_pseudo) | |
95 | { | |
96 | } | |
97 | ||
98 | protected: | |
99 | void dump_reg (ui_file *file, int regnum) override | |
100 | { | |
101 | if (regnum < 0) | |
102 | { | |
103 | if (m_has_pseudo) | |
104 | fprintf_unfiltered (file, "Cooked value"); | |
105 | else | |
106 | fprintf_unfiltered (file, "Raw value"); | |
107 | } | |
108 | else | |
109 | { | |
110 | if (regnum < gdbarch_num_regs (m_gdbarch) || m_has_pseudo) | |
111 | { | |
112 | auto size = register_size (m_gdbarch, regnum); | |
113 | ||
114 | if (size == 0) | |
115 | return; | |
116 | ||
117 | auto status = get_register_status (regnum); | |
118 | ||
119 | gdb_assert (status != REG_VALID); | |
120 | ||
121 | if (status == REG_UNKNOWN) | |
122 | fprintf_unfiltered (file, "<invalid>"); | |
123 | else | |
124 | fprintf_unfiltered (file, "<unavailable>"); | |
125 | } | |
126 | else | |
127 | { | |
128 | /* Just print "<cooked>" for pseudo register when | |
129 | regcache_dump_raw. */ | |
130 | fprintf_unfiltered (file, "<cooked>"); | |
131 | } | |
132 | } | |
133 | } | |
134 | }; | |
135 | ||
136 | /* For "maint print registers". */ | |
137 | ||
138 | class register_dump_none : public register_dump | |
139 | { | |
140 | public: | |
141 | register_dump_none (gdbarch *arch) | |
142 | : register_dump (arch) | |
143 | {} | |
144 | ||
145 | protected: | |
146 | void dump_reg (ui_file *file, int regnum) override | |
147 | {} | |
148 | }; | |
149 | ||
150 | /* For "maint print remote-registers". */ | |
151 | ||
152 | class register_dump_remote : public register_dump | |
153 | { | |
154 | public: | |
155 | register_dump_remote (gdbarch *arch) | |
156 | : register_dump (arch) | |
157 | {} | |
158 | ||
159 | protected: | |
160 | void dump_reg (ui_file *file, int regnum) override | |
161 | { | |
162 | if (regnum < 0) | |
163 | { | |
164 | fprintf_unfiltered (file, "Rmt Nr g/G Offset"); | |
165 | } | |
166 | else if (regnum < gdbarch_num_regs (m_gdbarch)) | |
167 | { | |
168 | int pnum, poffset; | |
169 | ||
170 | if (remote_register_number_and_offset (m_gdbarch, regnum, | |
171 | &pnum, &poffset)) | |
172 | fprintf_unfiltered (file, "%7d %11d", pnum, poffset); | |
173 | } | |
174 | } | |
175 | }; | |
176 | ||
177 | /* For "maint print register-groups". */ | |
178 | ||
179 | class register_dump_groups : public register_dump | |
180 | { | |
181 | public: | |
182 | register_dump_groups (gdbarch *arch) | |
183 | : register_dump (arch) | |
184 | {} | |
185 | ||
186 | protected: | |
187 | void dump_reg (ui_file *file, int regnum) override | |
188 | { | |
189 | if (regnum < 0) | |
190 | fprintf_unfiltered (file, "Groups"); | |
191 | else | |
192 | { | |
193 | const char *sep = ""; | |
194 | struct reggroup *group; | |
195 | ||
196 | for (group = reggroup_next (m_gdbarch, NULL); | |
197 | group != NULL; | |
198 | group = reggroup_next (m_gdbarch, group)) | |
199 | { | |
200 | if (gdbarch_register_reggroup_p (m_gdbarch, regnum, group)) | |
201 | { | |
202 | fprintf_unfiltered (file, | |
203 | "%s%s", sep, reggroup_name (group)); | |
204 | sep = ","; | |
205 | } | |
206 | } | |
207 | } | |
208 | } | |
209 | }; | |
210 | ||
211 | enum regcache_dump_what | |
212 | { | |
213 | regcache_dump_none, regcache_dump_raw, | |
214 | regcache_dump_cooked, regcache_dump_groups, | |
215 | regcache_dump_remote | |
216 | }; | |
217 | ||
218 | static void | |
219 | regcache_print (const char *args, enum regcache_dump_what what_to_dump) | |
220 | { | |
221 | /* Where to send output. */ | |
222 | stdio_file file; | |
223 | ui_file *out; | |
224 | ||
225 | if (args == NULL) | |
226 | out = gdb_stdout; | |
227 | else | |
228 | { | |
229 | if (!file.open (args, "w")) | |
230 | perror_with_name (_("maintenance print architecture")); | |
231 | out = &file; | |
232 | } | |
233 | ||
234 | std::unique_ptr<register_dump> dump; | |
235 | std::unique_ptr<regcache> regs; | |
236 | gdbarch *gdbarch; | |
237 | ||
238 | if (target_has_registers) | |
239 | gdbarch = get_current_regcache ()->arch (); | |
240 | else | |
241 | gdbarch = target_gdbarch (); | |
242 | ||
243 | switch (what_to_dump) | |
244 | { | |
245 | case regcache_dump_none: | |
246 | dump.reset (new register_dump_none (gdbarch)); | |
247 | break; | |
248 | case regcache_dump_remote: | |
249 | dump.reset (new register_dump_remote (gdbarch)); | |
250 | break; | |
251 | case regcache_dump_groups: | |
252 | dump.reset (new register_dump_groups (gdbarch)); | |
253 | break; | |
254 | case regcache_dump_raw: | |
255 | case regcache_dump_cooked: | |
256 | { | |
257 | auto dump_pseudo = (what_to_dump == regcache_dump_cooked); | |
258 | ||
259 | if (target_has_registers) | |
260 | dump.reset (new register_dump_regcache (get_current_regcache (), | |
261 | dump_pseudo)); | |
262 | else | |
263 | { | |
264 | /* For the benefit of "maint print registers" & co when | |
265 | debugging an executable, allow dumping a regcache even when | |
266 | there is no thread selected / no registers. */ | |
267 | dump.reset (new register_dump_reg_buffer (target_gdbarch (), | |
268 | dump_pseudo)); | |
269 | } | |
270 | } | |
271 | break; | |
272 | } | |
273 | ||
274 | dump->dump (out); | |
275 | } | |
276 | ||
277 | static void | |
278 | maintenance_print_registers (const char *args, int from_tty) | |
279 | { | |
280 | regcache_print (args, regcache_dump_none); | |
281 | } | |
282 | ||
283 | static void | |
284 | maintenance_print_raw_registers (const char *args, int from_tty) | |
285 | { | |
286 | regcache_print (args, regcache_dump_raw); | |
287 | } | |
288 | ||
289 | static void | |
290 | maintenance_print_cooked_registers (const char *args, int from_tty) | |
291 | { | |
292 | regcache_print (args, regcache_dump_cooked); | |
293 | } | |
294 | ||
295 | static void | |
296 | maintenance_print_register_groups (const char *args, int from_tty) | |
297 | { | |
298 | regcache_print (args, regcache_dump_groups); | |
299 | } | |
300 | ||
301 | static void | |
302 | maintenance_print_remote_registers (const char *args, int from_tty) | |
303 | { | |
304 | regcache_print (args, regcache_dump_remote); | |
305 | } | |
306 | ||
307 | void | |
308 | _initialize_regcache_dump (void) | |
309 | { | |
310 | add_cmd ("registers", class_maintenance, maintenance_print_registers, | |
311 | _("Print the internal register configuration.\n" | |
312 | "Takes an optional file parameter."), &maintenanceprintlist); | |
313 | add_cmd ("raw-registers", class_maintenance, | |
314 | maintenance_print_raw_registers, | |
315 | _("Print the internal register configuration " | |
316 | "including raw values.\n" | |
317 | "Takes an optional file parameter."), &maintenanceprintlist); | |
318 | add_cmd ("cooked-registers", class_maintenance, | |
319 | maintenance_print_cooked_registers, | |
320 | _("Print the internal register configuration " | |
321 | "including cooked values.\n" | |
322 | "Takes an optional file parameter."), &maintenanceprintlist); | |
323 | add_cmd ("register-groups", class_maintenance, | |
324 | maintenance_print_register_groups, | |
325 | _("Print the internal register configuration " | |
326 | "including each register's group.\n" | |
327 | "Takes an optional file parameter."), | |
328 | &maintenanceprintlist); | |
329 | add_cmd ("remote-registers", class_maintenance, | |
330 | maintenance_print_remote_registers, _("\ | |
331 | Print the internal register configuration including each register's\n\ | |
332 | remote register number and buffer offset in the g/G packets.\n\ | |
333 | Takes an optional file parameter."), | |
334 | &maintenanceprintlist); | |
335 | } |