Upgrade GDB from 7.4.1 to 7.6.1 on the vendor branch
[dragonfly.git] / contrib / gdb-7 / gdb / reggroups.c
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1/* Register groupings for GDB, the GNU debugger.
2
ef5ccd6c 3 Copyright (C) 2002-2013 Free Software Foundation, Inc.
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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
11 the Free Software Foundation; either version 3 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, see <http://www.gnu.org/licenses/>. */
21
22#include "defs.h"
23#include "arch-utils.h"
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
33struct reggroup
34{
35 const char *name;
36 enum reggroup_type type;
37};
38
39struct reggroup *
40reggroup_new (const char *name, enum reggroup_type type)
41{
42 struct reggroup *group = XMALLOC (struct reggroup);
cf7f2e2d 43
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44 group->name = name;
45 group->type = type;
46 return group;
47}
48
49/* Register group attributes. */
50
51const char *
52reggroup_name (struct reggroup *group)
53{
54 return group->name;
55}
56
57enum reggroup_type
58reggroup_type (struct reggroup *group)
59{
60 return group->type;
61}
62
63/* A linked list of groups for the given architecture. */
64
65struct reggroup_el
66{
67 struct reggroup *group;
68 struct reggroup_el *next;
69};
70
71struct reggroups
72{
73 struct reggroup_el *first;
74 struct reggroup_el **last;
75};
76
77static struct gdbarch_data *reggroups_data;
78
79static void *
80reggroups_init (struct gdbarch *gdbarch)
81{
82 struct reggroups *groups = GDBARCH_OBSTACK_ZALLOC (gdbarch,
83 struct reggroups);
cf7f2e2d 84
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85 groups->last = &groups->first;
86 return groups;
87}
88
89/* Add a register group (with attribute values) to the pre-defined
90 list. */
91
92static void
93add_group (struct reggroups *groups, struct reggroup *group,
94 struct reggroup_el *el)
95{
96 gdb_assert (group != NULL);
97 el->group = group;
98 el->next = NULL;
99 (*groups->last) = el;
100 groups->last = &el->next;
101}
102
103void
104reggroup_add (struct gdbarch *gdbarch, struct reggroup *group)
105{
106 struct reggroups *groups = gdbarch_data (gdbarch, reggroups_data);
107
108 if (groups == NULL)
109 {
110 /* ULGH, called during architecture initialization. Patch
111 things up. */
112 groups = reggroups_init (gdbarch);
113 deprecated_set_gdbarch_data (gdbarch, reggroups_data, groups);
114 }
115 add_group (groups, group,
116 GDBARCH_OBSTACK_ZALLOC (gdbarch, struct reggroup_el));
117}
118
119/* The default register groups for an architecture. */
120
121static struct reggroups default_groups = { NULL, &default_groups.first };
122
123/* A register group iterator. */
124
125struct reggroup *
126reggroup_next (struct gdbarch *gdbarch, struct reggroup *last)
127{
128 struct reggroups *groups;
129 struct reggroup_el *el;
130
131 /* Don't allow this function to be called during architecture
132 creation. If there are no groups, use the default groups list. */
133 groups = gdbarch_data (gdbarch, reggroups_data);
134 gdb_assert (groups != NULL);
135 if (groups->first == NULL)
136 groups = &default_groups;
137
138 /* Return the first/next reggroup. */
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)
144 {
145 if (el->next != NULL)
146 return el->next->group;
147 else
148 return NULL;
149 }
150 }
151 return NULL;
152}
153
154/* Is REGNUM a member of REGGROUP? */
155int
156default_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;
162
163 if (gdbarch_register_name (gdbarch, regnum) == NULL
164 || *gdbarch_register_name (gdbarch, regnum) == '\0')
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;
170 raw_p = regnum < gdbarch_num_regs (gdbarch);
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
184static void
185reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file)
186{
187 struct reggroup *group = NULL;
188
189 do
190 {
191 /* Group name. */
192 {
193 const char *name;
cf7f2e2d 194
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195 if (group == NULL)
196 name = "Group";
197 else
198 name = reggroup_name (group);
199 fprintf_unfiltered (file, " %-10s", name);
200 }
201
202 /* Group type. */
203 {
204 const char *type;
cf7f2e2d 205
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206 if (group == NULL)
207 type = "Type";
208 else
209 {
210 switch (reggroup_type (group))
211 {
212 case USER_REGGROUP:
213 type = "user";
214 break;
215 case INTERNAL_REGGROUP:
216 type = "internal";
217 break;
218 default:
219 internal_error (__FILE__, __LINE__, _("bad switch"));
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");
229
230 group = reggroup_next (gdbarch, group);
231 }
232 while (group != NULL);
233}
234
235static void
236maintenance_print_reggroups (char *args, int from_tty)
237{
238 struct gdbarch *gdbarch = get_current_arch ();
239
240 if (args == NULL)
241 reggroups_dump (gdbarch, gdb_stdout);
242 else
243 {
244 struct cleanup *cleanups;
245 struct ui_file *file = gdb_fopen (args, "w");
cf7f2e2d 246
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247 if (file == NULL)
248 perror_with_name (_("maintenance print reggroups"));
249 cleanups = make_cleanup_ui_file_delete (file);
250 reggroups_dump (gdbarch, file);
251 do_cleanups (cleanups);
252 }
253}
254
255/* Pre-defined register groups. */
256static struct reggroup general_group = { "general", USER_REGGROUP };
257static struct reggroup float_group = { "float", USER_REGGROUP };
258static struct reggroup system_group = { "system", USER_REGGROUP };
259static struct reggroup vector_group = { "vector", USER_REGGROUP };
260static struct reggroup all_group = { "all", USER_REGGROUP };
261static struct reggroup save_group = { "save", INTERNAL_REGGROUP };
262static struct reggroup restore_group = { "restore", INTERNAL_REGGROUP };
263
264struct reggroup *const general_reggroup = &general_group;
265struct reggroup *const float_reggroup = &float_group;
266struct reggroup *const system_reggroup = &system_group;
267struct reggroup *const vector_reggroup = &vector_group;
268struct reggroup *const all_reggroup = &all_group;
269struct reggroup *const save_reggroup = &save_group;
270struct reggroup *const restore_reggroup = &restore_group;
271
272extern initialize_file_ftype _initialize_reggroup; /* -Wmissing-prototypes */
273
274void
275_initialize_reggroup (void)
276{
277 reggroups_data = gdbarch_data_register_post_init (reggroups_init);
278
279 /* The pre-defined list of groups. */
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));
287
288 add_cmd ("reggroups", class_maintenance,
289 maintenance_print_reggroups, _("\
290Print the internal register group names.\n\
291Takes an optional file parameter."),
292 &maintenanceprintlist);
293
294}