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b59ff9d5 AC |
1 | /* Register groupings for GDB, the GNU debugger. |
2 | ||
28e7fd62 | 3 | Copyright (C) 2002-2013 Free Software Foundation, Inc. |
b59ff9d5 AC |
4 | |
5 | Contributed by 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 | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
b59ff9d5 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 | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
b59ff9d5 AC |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
b59ff9d5 AC |
24 | #include "reggroups.h" |
25 | #include "gdbtypes.h" | |
26 | #include "gdb_assert.h" | |
27 | #include "regcache.h" | |
28 | #include "command.h" | |
29 | #include "gdbcmd.h" /* For maintenanceprintlist. */ | |
30 | ||
31 | /* Individual register groups. */ | |
32 | ||
33 | struct reggroup | |
34 | { | |
35 | const char *name; | |
36 | enum reggroup_type type; | |
37 | }; | |
38 | ||
39 | struct reggroup * | |
40 | reggroup_new (const char *name, enum reggroup_type type) | |
41 | { | |
42 | struct reggroup *group = XMALLOC (struct reggroup); | |
123f5f96 | 43 | |
b59ff9d5 AC |
44 | group->name = name; |
45 | group->type = type; | |
46 | return group; | |
47 | } | |
48 | ||
49 | /* Register group attributes. */ | |
50 | ||
51 | const char * | |
52 | reggroup_name (struct reggroup *group) | |
53 | { | |
54 | return group->name; | |
55 | } | |
56 | ||
57 | enum reggroup_type | |
58 | reggroup_type (struct reggroup *group) | |
59 | { | |
60 | return group->type; | |
61 | } | |
62 | ||
6c7d17ba AC |
63 | /* A linked list of groups for the given architecture. */ |
64 | ||
65 | struct reggroup_el | |
66 | { | |
67 | struct reggroup *group; | |
68 | struct reggroup_el *next; | |
69 | }; | |
b59ff9d5 AC |
70 | |
71 | struct reggroups | |
72 | { | |
6c7d17ba AC |
73 | struct reggroup_el *first; |
74 | struct reggroup_el **last; | |
b59ff9d5 AC |
75 | }; |
76 | ||
77 | static struct gdbarch_data *reggroups_data; | |
78 | ||
79 | static void * | |
80 | reggroups_init (struct gdbarch *gdbarch) | |
81 | { | |
6c7d17ba AC |
82 | struct reggroups *groups = GDBARCH_OBSTACK_ZALLOC (gdbarch, |
83 | struct reggroups); | |
123f5f96 | 84 | |
6c7d17ba | 85 | groups->last = &groups->first; |
b59ff9d5 AC |
86 | return groups; |
87 | } | |
88 | ||
b59ff9d5 | 89 | /* Add a register group (with attribute values) to the pre-defined |
6c7d17ba | 90 | list. */ |
b59ff9d5 AC |
91 | |
92 | static void | |
6c7d17ba AC |
93 | add_group (struct reggroups *groups, struct reggroup *group, |
94 | struct reggroup_el *el) | |
b59ff9d5 AC |
95 | { |
96 | gdb_assert (group != NULL); | |
6c7d17ba AC |
97 | el->group = group; |
98 | el->next = NULL; | |
99 | (*groups->last) = el; | |
100 | groups->last = &el->next; | |
b59ff9d5 AC |
101 | } |
102 | ||
103 | void | |
104 | reggroup_add (struct gdbarch *gdbarch, struct reggroup *group) | |
105 | { | |
106 | struct reggroups *groups = gdbarch_data (gdbarch, reggroups_data); | |
7e6d0ac8 | 107 | |
b59ff9d5 AC |
108 | if (groups == NULL) |
109 | { | |
110 | /* ULGH, called during architecture initialization. Patch | |
111 | things up. */ | |
112 | groups = reggroups_init (gdbarch); | |
030f20e1 | 113 | deprecated_set_gdbarch_data (gdbarch, reggroups_data, groups); |
b59ff9d5 | 114 | } |
6c7d17ba AC |
115 | add_group (groups, group, |
116 | GDBARCH_OBSTACK_ZALLOC (gdbarch, struct reggroup_el)); | |
b59ff9d5 AC |
117 | } |
118 | ||
6c7d17ba AC |
119 | /* The default register groups for an architecture. */ |
120 | ||
121 | static struct reggroups default_groups = { NULL, &default_groups.first }; | |
b59ff9d5 | 122 | |
6c7d17ba | 123 | /* A register group iterator. */ |
b59ff9d5 | 124 | |
6c7d17ba AC |
125 | struct reggroup * |
126 | reggroup_next (struct gdbarch *gdbarch, struct reggroup *last) | |
b59ff9d5 | 127 | { |
6c7d17ba AC |
128 | struct reggroups *groups; |
129 | struct reggroup_el *el; | |
7e6d0ac8 | 130 | |
b59ff9d5 | 131 | /* Don't allow this function to be called during architecture |
6c7d17ba AC |
132 | creation. If there are no groups, use the default groups list. */ |
133 | groups = gdbarch_data (gdbarch, reggroups_data); | |
b59ff9d5 | 134 | gdb_assert (groups != NULL); |
6c7d17ba AC |
135 | if (groups->first == NULL) |
136 | groups = &default_groups; | |
137 | ||
9dd5f34f | 138 | /* Return the first/next reggroup. */ |
6c7d17ba AC |
139 | if (last == NULL) |
140 | return groups->first->group; | |
141 | for (el = groups->first; el != NULL; el = el->next) | |
142 | { | |
143 | if (el->group == last) | |
9dd5f34f AC |
144 | { |
145 | if (el->next != NULL) | |
146 | return el->next->group; | |
147 | else | |
148 | return NULL; | |
149 | } | |
6c7d17ba AC |
150 | } |
151 | return NULL; | |
b59ff9d5 AC |
152 | } |
153 | ||
154 | /* Is REGNUM a member of REGGROUP? */ | |
155 | int | |
156 | default_register_reggroup_p (struct gdbarch *gdbarch, int regnum, | |
157 | struct reggroup *group) | |
158 | { | |
159 | int vector_p; | |
160 | int float_p; | |
161 | int raw_p; | |
7e6d0ac8 | 162 | |
6bcde365 UW |
163 | if (gdbarch_register_name (gdbarch, regnum) == NULL |
164 | || *gdbarch_register_name (gdbarch, regnum) == '\0') | |
b59ff9d5 AC |
165 | return 0; |
166 | if (group == all_reggroup) | |
167 | return 1; | |
168 | vector_p = TYPE_VECTOR (register_type (gdbarch, regnum)); | |
169 | float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT; | |
6bcde365 | 170 | raw_p = regnum < gdbarch_num_regs (gdbarch); |
b59ff9d5 AC |
171 | if (group == float_reggroup) |
172 | return float_p; | |
173 | if (group == vector_reggroup) | |
174 | return vector_p; | |
175 | if (group == general_reggroup) | |
176 | return (!vector_p && !float_p); | |
177 | if (group == save_reggroup || group == restore_reggroup) | |
178 | return raw_p; | |
179 | return 0; | |
180 | } | |
181 | ||
182 | /* Dump out a table of register groups for the current architecture. */ | |
183 | ||
184 | static void | |
185 | reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file) | |
186 | { | |
6c7d17ba | 187 | struct reggroup *group = NULL; |
7e6d0ac8 | 188 | |
b59ff9d5 AC |
189 | do |
190 | { | |
191 | /* Group name. */ | |
192 | { | |
193 | const char *name; | |
123f5f96 | 194 | |
6c7d17ba | 195 | if (group == NULL) |
b59ff9d5 AC |
196 | name = "Group"; |
197 | else | |
6c7d17ba | 198 | name = reggroup_name (group); |
b59ff9d5 AC |
199 | fprintf_unfiltered (file, " %-10s", name); |
200 | } | |
201 | ||
202 | /* Group type. */ | |
203 | { | |
204 | const char *type; | |
123f5f96 | 205 | |
6c7d17ba | 206 | if (group == NULL) |
b59ff9d5 AC |
207 | type = "Type"; |
208 | else | |
209 | { | |
6c7d17ba | 210 | switch (reggroup_type (group)) |
b59ff9d5 AC |
211 | { |
212 | case USER_REGGROUP: | |
213 | type = "user"; | |
214 | break; | |
215 | case INTERNAL_REGGROUP: | |
216 | type = "internal"; | |
217 | break; | |
218 | default: | |
e2e0b3e5 | 219 | internal_error (__FILE__, __LINE__, _("bad switch")); |
b59ff9d5 AC |
220 | } |
221 | } | |
222 | fprintf_unfiltered (file, " %-10s", type); | |
223 | } | |
224 | ||
225 | /* Note: If you change this, be sure to also update the | |
226 | documentation. */ | |
227 | ||
228 | fprintf_unfiltered (file, "\n"); | |
6c7d17ba AC |
229 | |
230 | group = reggroup_next (gdbarch, group); | |
b59ff9d5 | 231 | } |
6c7d17ba | 232 | while (group != NULL); |
b59ff9d5 AC |
233 | } |
234 | ||
235 | static void | |
236 | maintenance_print_reggroups (char *args, int from_tty) | |
237 | { | |
e17c207e UW |
238 | struct gdbarch *gdbarch = get_current_arch (); |
239 | ||
b59ff9d5 | 240 | if (args == NULL) |
e17c207e | 241 | reggroups_dump (gdbarch, gdb_stdout); |
b59ff9d5 AC |
242 | else |
243 | { | |
724b958c | 244 | struct cleanup *cleanups; |
b59ff9d5 | 245 | struct ui_file *file = gdb_fopen (args, "w"); |
123f5f96 | 246 | |
b59ff9d5 | 247 | if (file == NULL) |
e2e0b3e5 | 248 | perror_with_name (_("maintenance print reggroups")); |
724b958c | 249 | cleanups = make_cleanup_ui_file_delete (file); |
e17c207e | 250 | reggroups_dump (gdbarch, file); |
724b958c | 251 | do_cleanups (cleanups); |
b59ff9d5 AC |
252 | } |
253 | } | |
254 | ||
255 | /* Pre-defined register groups. */ | |
256 | static struct reggroup general_group = { "general", USER_REGGROUP }; | |
257 | static struct reggroup float_group = { "float", USER_REGGROUP }; | |
258 | static struct reggroup system_group = { "system", USER_REGGROUP }; | |
259 | static struct reggroup vector_group = { "vector", USER_REGGROUP }; | |
260 | static struct reggroup all_group = { "all", USER_REGGROUP }; | |
261 | static struct reggroup save_group = { "save", INTERNAL_REGGROUP }; | |
262 | static struct reggroup restore_group = { "restore", INTERNAL_REGGROUP }; | |
263 | ||
264 | struct reggroup *const general_reggroup = &general_group; | |
265 | struct reggroup *const float_reggroup = &float_group; | |
266 | struct reggroup *const system_reggroup = &system_group; | |
267 | struct reggroup *const vector_reggroup = &vector_group; | |
268 | struct reggroup *const all_reggroup = &all_group; | |
269 | struct reggroup *const save_reggroup = &save_group; | |
270 | struct reggroup *const restore_reggroup = &restore_group; | |
271 | ||
b9362cc7 AC |
272 | extern initialize_file_ftype _initialize_reggroup; /* -Wmissing-prototypes */ |
273 | ||
b59ff9d5 AC |
274 | void |
275 | _initialize_reggroup (void) | |
276 | { | |
030f20e1 | 277 | reggroups_data = gdbarch_data_register_post_init (reggroups_init); |
b59ff9d5 AC |
278 | |
279 | /* The pre-defined list of groups. */ | |
6c7d17ba AC |
280 | add_group (&default_groups, general_reggroup, XMALLOC (struct reggroup_el)); |
281 | add_group (&default_groups, float_reggroup, XMALLOC (struct reggroup_el)); | |
282 | add_group (&default_groups, system_reggroup, XMALLOC (struct reggroup_el)); | |
283 | add_group (&default_groups, vector_reggroup, XMALLOC (struct reggroup_el)); | |
284 | add_group (&default_groups, all_reggroup, XMALLOC (struct reggroup_el)); | |
285 | add_group (&default_groups, save_reggroup, XMALLOC (struct reggroup_el)); | |
286 | add_group (&default_groups, restore_reggroup, XMALLOC (struct reggroup_el)); | |
b59ff9d5 AC |
287 | |
288 | add_cmd ("reggroups", class_maintenance, | |
1a966eab | 289 | maintenance_print_reggroups, _("\ |
b59ff9d5 | 290 | Print the internal register group names.\n\ |
1a966eab | 291 | Takes an optional file parameter."), |
b59ff9d5 AC |
292 | &maintenanceprintlist); |
293 | ||
294 | } |