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b59ff9d5 AC |
1 | /* Register groupings for GDB, the GNU debugger. |
2 | ||
32d0add0 | 3 | Copyright (C) 2002-2015 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" | |
b59ff9d5 AC |
26 | #include "regcache.h" |
27 | #include "command.h" | |
28 | #include "gdbcmd.h" /* For maintenanceprintlist. */ | |
29 | ||
30 | /* Individual register groups. */ | |
31 | ||
32 | struct reggroup | |
33 | { | |
34 | const char *name; | |
35 | enum reggroup_type type; | |
36 | }; | |
37 | ||
38 | struct reggroup * | |
39 | reggroup_new (const char *name, enum reggroup_type type) | |
40 | { | |
70ba0933 | 41 | struct reggroup *group = XNEW (struct reggroup); |
123f5f96 | 42 | |
b59ff9d5 AC |
43 | group->name = name; |
44 | group->type = type; | |
45 | return group; | |
46 | } | |
47 | ||
48 | /* Register group attributes. */ | |
49 | ||
50 | const char * | |
51 | reggroup_name (struct reggroup *group) | |
52 | { | |
53 | return group->name; | |
54 | } | |
55 | ||
56 | enum reggroup_type | |
57 | reggroup_type (struct reggroup *group) | |
58 | { | |
59 | return group->type; | |
60 | } | |
61 | ||
6c7d17ba AC |
62 | /* A linked list of groups for the given architecture. */ |
63 | ||
64 | struct reggroup_el | |
65 | { | |
66 | struct reggroup *group; | |
67 | struct reggroup_el *next; | |
68 | }; | |
b59ff9d5 AC |
69 | |
70 | struct reggroups | |
71 | { | |
6c7d17ba AC |
72 | struct reggroup_el *first; |
73 | struct reggroup_el **last; | |
b59ff9d5 AC |
74 | }; |
75 | ||
76 | static struct gdbarch_data *reggroups_data; | |
77 | ||
78 | static void * | |
79 | reggroups_init (struct gdbarch *gdbarch) | |
80 | { | |
6c7d17ba AC |
81 | struct reggroups *groups = GDBARCH_OBSTACK_ZALLOC (gdbarch, |
82 | struct reggroups); | |
123f5f96 | 83 | |
6c7d17ba | 84 | groups->last = &groups->first; |
b59ff9d5 AC |
85 | return groups; |
86 | } | |
87 | ||
b59ff9d5 | 88 | /* Add a register group (with attribute values) to the pre-defined |
6c7d17ba | 89 | list. */ |
b59ff9d5 AC |
90 | |
91 | static void | |
6c7d17ba AC |
92 | add_group (struct reggroups *groups, struct reggroup *group, |
93 | struct reggroup_el *el) | |
b59ff9d5 AC |
94 | { |
95 | gdb_assert (group != NULL); | |
6c7d17ba AC |
96 | el->group = group; |
97 | el->next = NULL; | |
98 | (*groups->last) = el; | |
99 | groups->last = &el->next; | |
b59ff9d5 AC |
100 | } |
101 | ||
102 | void | |
103 | reggroup_add (struct gdbarch *gdbarch, struct reggroup *group) | |
104 | { | |
105 | struct reggroups *groups = gdbarch_data (gdbarch, reggroups_data); | |
7e6d0ac8 | 106 | |
b59ff9d5 AC |
107 | if (groups == NULL) |
108 | { | |
109 | /* ULGH, called during architecture initialization. Patch | |
110 | things up. */ | |
111 | groups = reggroups_init (gdbarch); | |
030f20e1 | 112 | deprecated_set_gdbarch_data (gdbarch, reggroups_data, groups); |
b59ff9d5 | 113 | } |
6c7d17ba AC |
114 | add_group (groups, group, |
115 | GDBARCH_OBSTACK_ZALLOC (gdbarch, struct reggroup_el)); | |
b59ff9d5 AC |
116 | } |
117 | ||
6c7d17ba AC |
118 | /* The default register groups for an architecture. */ |
119 | ||
120 | static struct reggroups default_groups = { NULL, &default_groups.first }; | |
b59ff9d5 | 121 | |
6c7d17ba | 122 | /* A register group iterator. */ |
b59ff9d5 | 123 | |
6c7d17ba AC |
124 | struct reggroup * |
125 | reggroup_next (struct gdbarch *gdbarch, struct reggroup *last) | |
b59ff9d5 | 126 | { |
6c7d17ba AC |
127 | struct reggroups *groups; |
128 | struct reggroup_el *el; | |
7e6d0ac8 | 129 | |
b59ff9d5 | 130 | /* Don't allow this function to be called during architecture |
6c7d17ba AC |
131 | creation. If there are no groups, use the default groups list. */ |
132 | groups = gdbarch_data (gdbarch, reggroups_data); | |
b59ff9d5 | 133 | gdb_assert (groups != NULL); |
6c7d17ba AC |
134 | if (groups->first == NULL) |
135 | groups = &default_groups; | |
136 | ||
9dd5f34f | 137 | /* Return the first/next reggroup. */ |
6c7d17ba AC |
138 | if (last == NULL) |
139 | return groups->first->group; | |
140 | for (el = groups->first; el != NULL; el = el->next) | |
141 | { | |
142 | if (el->group == last) | |
9dd5f34f AC |
143 | { |
144 | if (el->next != NULL) | |
145 | return el->next->group; | |
146 | else | |
147 | return NULL; | |
148 | } | |
6c7d17ba AC |
149 | } |
150 | return NULL; | |
b59ff9d5 AC |
151 | } |
152 | ||
153 | /* Is REGNUM a member of REGGROUP? */ | |
154 | int | |
155 | default_register_reggroup_p (struct gdbarch *gdbarch, int regnum, | |
156 | struct reggroup *group) | |
157 | { | |
158 | int vector_p; | |
159 | int float_p; | |
160 | int raw_p; | |
7e6d0ac8 | 161 | |
6bcde365 UW |
162 | if (gdbarch_register_name (gdbarch, regnum) == NULL |
163 | || *gdbarch_register_name (gdbarch, regnum) == '\0') | |
b59ff9d5 AC |
164 | return 0; |
165 | if (group == all_reggroup) | |
166 | return 1; | |
167 | vector_p = TYPE_VECTOR (register_type (gdbarch, regnum)); | |
168 | float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT; | |
6bcde365 | 169 | raw_p = regnum < gdbarch_num_regs (gdbarch); |
b59ff9d5 AC |
170 | if (group == float_reggroup) |
171 | return float_p; | |
172 | if (group == vector_reggroup) | |
173 | return vector_p; | |
174 | if (group == general_reggroup) | |
175 | return (!vector_p && !float_p); | |
176 | if (group == save_reggroup || group == restore_reggroup) | |
177 | return raw_p; | |
178 | return 0; | |
179 | } | |
180 | ||
181 | /* Dump out a table of register groups for the current architecture. */ | |
182 | ||
183 | static void | |
184 | reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file) | |
185 | { | |
6c7d17ba | 186 | struct reggroup *group = NULL; |
7e6d0ac8 | 187 | |
b59ff9d5 AC |
188 | do |
189 | { | |
190 | /* Group name. */ | |
191 | { | |
192 | const char *name; | |
123f5f96 | 193 | |
6c7d17ba | 194 | if (group == NULL) |
b59ff9d5 AC |
195 | name = "Group"; |
196 | else | |
6c7d17ba | 197 | name = reggroup_name (group); |
b59ff9d5 AC |
198 | fprintf_unfiltered (file, " %-10s", name); |
199 | } | |
200 | ||
201 | /* Group type. */ | |
202 | { | |
203 | const char *type; | |
123f5f96 | 204 | |
6c7d17ba | 205 | if (group == NULL) |
b59ff9d5 AC |
206 | type = "Type"; |
207 | else | |
208 | { | |
6c7d17ba | 209 | switch (reggroup_type (group)) |
b59ff9d5 AC |
210 | { |
211 | case USER_REGGROUP: | |
212 | type = "user"; | |
213 | break; | |
214 | case INTERNAL_REGGROUP: | |
215 | type = "internal"; | |
216 | break; | |
217 | default: | |
e2e0b3e5 | 218 | internal_error (__FILE__, __LINE__, _("bad switch")); |
b59ff9d5 AC |
219 | } |
220 | } | |
221 | fprintf_unfiltered (file, " %-10s", type); | |
222 | } | |
223 | ||
224 | /* Note: If you change this, be sure to also update the | |
225 | documentation. */ | |
226 | ||
227 | fprintf_unfiltered (file, "\n"); | |
6c7d17ba AC |
228 | |
229 | group = reggroup_next (gdbarch, group); | |
b59ff9d5 | 230 | } |
6c7d17ba | 231 | while (group != NULL); |
b59ff9d5 AC |
232 | } |
233 | ||
234 | static void | |
235 | maintenance_print_reggroups (char *args, int from_tty) | |
236 | { | |
e17c207e UW |
237 | struct gdbarch *gdbarch = get_current_arch (); |
238 | ||
b59ff9d5 | 239 | if (args == NULL) |
e17c207e | 240 | reggroups_dump (gdbarch, gdb_stdout); |
b59ff9d5 AC |
241 | else |
242 | { | |
724b958c | 243 | struct cleanup *cleanups; |
b59ff9d5 | 244 | struct ui_file *file = gdb_fopen (args, "w"); |
123f5f96 | 245 | |
b59ff9d5 | 246 | if (file == NULL) |
e2e0b3e5 | 247 | perror_with_name (_("maintenance print reggroups")); |
724b958c | 248 | cleanups = make_cleanup_ui_file_delete (file); |
e17c207e | 249 | reggroups_dump (gdbarch, file); |
724b958c | 250 | do_cleanups (cleanups); |
b59ff9d5 AC |
251 | } |
252 | } | |
253 | ||
254 | /* Pre-defined register groups. */ | |
255 | static struct reggroup general_group = { "general", USER_REGGROUP }; | |
256 | static struct reggroup float_group = { "float", USER_REGGROUP }; | |
257 | static struct reggroup system_group = { "system", USER_REGGROUP }; | |
258 | static struct reggroup vector_group = { "vector", USER_REGGROUP }; | |
259 | static struct reggroup all_group = { "all", USER_REGGROUP }; | |
260 | static struct reggroup save_group = { "save", INTERNAL_REGGROUP }; | |
261 | static struct reggroup restore_group = { "restore", INTERNAL_REGGROUP }; | |
262 | ||
263 | struct reggroup *const general_reggroup = &general_group; | |
264 | struct reggroup *const float_reggroup = &float_group; | |
265 | struct reggroup *const system_reggroup = &system_group; | |
266 | struct reggroup *const vector_reggroup = &vector_group; | |
267 | struct reggroup *const all_reggroup = &all_group; | |
268 | struct reggroup *const save_reggroup = &save_group; | |
269 | struct reggroup *const restore_reggroup = &restore_group; | |
270 | ||
b9362cc7 AC |
271 | extern initialize_file_ftype _initialize_reggroup; /* -Wmissing-prototypes */ |
272 | ||
b59ff9d5 AC |
273 | void |
274 | _initialize_reggroup (void) | |
275 | { | |
030f20e1 | 276 | reggroups_data = gdbarch_data_register_post_init (reggroups_init); |
b59ff9d5 AC |
277 | |
278 | /* The pre-defined list of groups. */ | |
70ba0933 TT |
279 | add_group (&default_groups, general_reggroup, XNEW (struct reggroup_el)); |
280 | add_group (&default_groups, float_reggroup, XNEW (struct reggroup_el)); | |
281 | add_group (&default_groups, system_reggroup, XNEW (struct reggroup_el)); | |
282 | add_group (&default_groups, vector_reggroup, XNEW (struct reggroup_el)); | |
283 | add_group (&default_groups, all_reggroup, XNEW (struct reggroup_el)); | |
284 | add_group (&default_groups, save_reggroup, XNEW (struct reggroup_el)); | |
285 | add_group (&default_groups, restore_reggroup, XNEW (struct reggroup_el)); | |
b59ff9d5 AC |
286 | |
287 | add_cmd ("reggroups", class_maintenance, | |
1a966eab | 288 | maintenance_print_reggroups, _("\ |
b59ff9d5 | 289 | Print the internal register group names.\n\ |
1a966eab | 290 | Takes an optional file parameter."), |
b59ff9d5 AC |
291 | &maintenanceprintlist); |
292 | ||
293 | } |