1 /* Register groupings for GDB, the GNU debugger.
3 Copyright (C) 2002-2015 Free Software Foundation, Inc.
5 Contributed by Red Hat.
7 This file is part of GDB.
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.
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.
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/>. */
23 #include "arch-utils.h"
24 #include "reggroups.h"
28 #include "gdbcmd.h" /* For maintenanceprintlist. */
30 /* Individual register groups. */
35 enum reggroup_type type;
39 reggroup_new (const char *name, enum reggroup_type type)
41 struct reggroup *group = XNEW (struct reggroup);
48 /* Register group attributes. */
51 reggroup_name (struct reggroup *group)
57 reggroup_type (struct reggroup *group)
62 /* A linked list of groups for the given architecture. */
66 struct reggroup *group;
67 struct reggroup_el *next;
72 struct reggroup_el *first;
73 struct reggroup_el **last;
76 static struct gdbarch_data *reggroups_data;
79 reggroups_init (struct gdbarch *gdbarch)
81 struct reggroups *groups = GDBARCH_OBSTACK_ZALLOC (gdbarch,
84 groups->last = &groups->first;
88 /* Add a register group (with attribute values) to the pre-defined
92 add_group (struct reggroups *groups, struct reggroup *group,
93 struct reggroup_el *el)
95 gdb_assert (group != NULL);
99 groups->last = &el->next;
103 reggroup_add (struct gdbarch *gdbarch, struct reggroup *group)
105 struct reggroups *groups = gdbarch_data (gdbarch, reggroups_data);
109 /* ULGH, called during architecture initialization. Patch
111 groups = reggroups_init (gdbarch);
112 deprecated_set_gdbarch_data (gdbarch, reggroups_data, groups);
114 add_group (groups, group,
115 GDBARCH_OBSTACK_ZALLOC (gdbarch, struct reggroup_el));
118 /* The default register groups for an architecture. */
120 static struct reggroups default_groups = { NULL, &default_groups.first };
122 /* A register group iterator. */
125 reggroup_next (struct gdbarch *gdbarch, struct reggroup *last)
127 struct reggroups *groups;
128 struct reggroup_el *el;
130 /* Don't allow this function to be called during architecture
131 creation. If there are no groups, use the default groups list. */
132 groups = gdbarch_data (gdbarch, reggroups_data);
133 gdb_assert (groups != NULL);
134 if (groups->first == NULL)
135 groups = &default_groups;
137 /* Return the first/next reggroup. */
139 return groups->first->group;
140 for (el = groups->first; el != NULL; el = el->next)
142 if (el->group == last)
144 if (el->next != NULL)
145 return el->next->group;
153 /* Is REGNUM a member of REGGROUP? */
155 default_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
156 struct reggroup *group)
162 if (gdbarch_register_name (gdbarch, regnum) == NULL
163 || *gdbarch_register_name (gdbarch, regnum) == '\0')
165 if (group == all_reggroup)
167 vector_p = TYPE_VECTOR (register_type (gdbarch, regnum));
168 float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT;
169 raw_p = regnum < gdbarch_num_regs (gdbarch);
170 if (group == float_reggroup)
172 if (group == vector_reggroup)
174 if (group == general_reggroup)
175 return (!vector_p && !float_p);
176 if (group == save_reggroup || group == restore_reggroup)
181 /* Dump out a table of register groups for the current architecture. */
184 reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file)
186 struct reggroup *group = NULL;
197 name = reggroup_name (group);
198 fprintf_unfiltered (file, " %-10s", name);
209 switch (reggroup_type (group))
214 case INTERNAL_REGGROUP:
218 internal_error (__FILE__, __LINE__, _("bad switch"));
221 fprintf_unfiltered (file, " %-10s", type);
224 /* Note: If you change this, be sure to also update the
227 fprintf_unfiltered (file, "\n");
229 group = reggroup_next (gdbarch, group);
231 while (group != NULL);
235 maintenance_print_reggroups (char *args, int from_tty)
237 struct gdbarch *gdbarch = get_current_arch ();
240 reggroups_dump (gdbarch, gdb_stdout);
243 struct cleanup *cleanups;
244 struct ui_file *file = gdb_fopen (args, "w");
247 perror_with_name (_("maintenance print reggroups"));
248 cleanups = make_cleanup_ui_file_delete (file);
249 reggroups_dump (gdbarch, file);
250 do_cleanups (cleanups);
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 };
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;
271 extern initialize_file_ftype _initialize_reggroup; /* -Wmissing-prototypes */
274 _initialize_reggroup (void)
276 reggroups_data = gdbarch_data_register_post_init (reggroups_init);
278 /* The pre-defined list of groups. */
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));
287 add_cmd ("reggroups", class_maintenance,
288 maintenance_print_reggroups, _("\
289 Print the internal register group names.\n\
290 Takes an optional file parameter."),
291 &maintenanceprintlist);