1 /* Register groupings for GDB, the GNU debugger.
3 Copyright 2002 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 2 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, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
25 #include "reggroups.h"
27 #include "gdb_assert.h"
30 #include "gdbcmd.h" /* For maintenanceprintlist. */
32 /* Individual register groups. */
37 enum reggroup_type type;
41 reggroup_new (const char *name, enum reggroup_type type)
43 struct reggroup *group = XMALLOC (struct reggroup);
49 /* Register group attributes. */
52 reggroup_name (struct reggroup *group)
58 reggroup_type (struct reggroup *group)
63 /* A linked list of groups for the given architecture. */
67 struct reggroup *group;
68 struct reggroup_el *next;
73 struct reggroup_el *first;
74 struct reggroup_el **last;
77 static struct gdbarch_data *reggroups_data;
80 reggroups_init (struct gdbarch *gdbarch)
82 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);
108 /* ULGH, called during architecture initialization. Patch
110 groups = reggroups_init (gdbarch);
111 set_gdbarch_data (gdbarch, reggroups_data, groups);
113 add_group (groups, group,
114 GDBARCH_OBSTACK_ZALLOC (gdbarch, struct reggroup_el));
117 /* The default register groups for an architecture. */
119 static struct reggroups default_groups = { NULL, &default_groups.first };
121 /* A register group iterator. */
124 reggroup_next (struct gdbarch *gdbarch, struct reggroup *last)
126 struct reggroups *groups;
127 struct reggroup_el *el;
128 /* Don't allow this function to be called during architecture
129 creation. If there are no groups, use the default groups list. */
130 groups = gdbarch_data (gdbarch, reggroups_data);
131 gdb_assert (groups != NULL);
132 if (groups->first == NULL)
133 groups = &default_groups;
135 /* Return the first/next reggroup. */
137 return groups->first->group;
138 for (el = groups->first; el != NULL; el = el->next)
140 if (el->group == last)
142 if (el->next != NULL)
143 return el->next->group;
151 /* Is REGNUM a member of REGGROUP? */
153 default_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
154 struct reggroup *group)
159 if (REGISTER_NAME (regnum) == NULL
160 || *REGISTER_NAME (regnum) == '\0')
162 if (group == all_reggroup)
164 vector_p = TYPE_VECTOR (register_type (gdbarch, regnum));
165 float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT;
166 /* FIXME: cagney/2003-04-13: Can't yet use gdbarch_num_regs
167 (gdbarch), as not all architectures are multi-arch. */
168 raw_p = regnum < NUM_REGS;
169 if (group == float_reggroup)
171 if (group == vector_reggroup)
173 if (group == general_reggroup)
174 return (!vector_p && !float_p);
175 if (group == save_reggroup || group == restore_reggroup)
180 /* Dump out a table of register groups for the current architecture. */
183 reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file)
185 struct reggroup *group = NULL;
194 name = reggroup_name (group);
195 fprintf_unfiltered (file, " %-10s", name);
205 switch (reggroup_type (group))
210 case INTERNAL_REGGROUP:
214 internal_error (__FILE__, __LINE__, "bad switch");
217 fprintf_unfiltered (file, " %-10s", type);
220 /* Note: If you change this, be sure to also update the
223 fprintf_unfiltered (file, "\n");
225 group = reggroup_next (gdbarch, group);
227 while (group != NULL);
231 maintenance_print_reggroups (char *args, int from_tty)
234 reggroups_dump (current_gdbarch, gdb_stdout);
237 struct ui_file *file = gdb_fopen (args, "w");
239 perror_with_name ("maintenance print reggroups");
240 reggroups_dump (current_gdbarch, file);
241 ui_file_delete (file);
245 /* Pre-defined register groups. */
246 static struct reggroup general_group = { "general", USER_REGGROUP };
247 static struct reggroup float_group = { "float", USER_REGGROUP };
248 static struct reggroup system_group = { "system", USER_REGGROUP };
249 static struct reggroup vector_group = { "vector", USER_REGGROUP };
250 static struct reggroup all_group = { "all", USER_REGGROUP };
251 static struct reggroup save_group = { "save", INTERNAL_REGGROUP };
252 static struct reggroup restore_group = { "restore", INTERNAL_REGGROUP };
254 struct reggroup *const general_reggroup = &general_group;
255 struct reggroup *const float_reggroup = &float_group;
256 struct reggroup *const system_reggroup = &system_group;
257 struct reggroup *const vector_reggroup = &vector_group;
258 struct reggroup *const all_reggroup = &all_group;
259 struct reggroup *const save_reggroup = &save_group;
260 struct reggroup *const restore_reggroup = &restore_group;
262 extern initialize_file_ftype _initialize_reggroup; /* -Wmissing-prototypes */
265 _initialize_reggroup (void)
267 reggroups_data = register_gdbarch_data (reggroups_init);
269 /* The pre-defined list of groups. */
270 add_group (&default_groups, general_reggroup, XMALLOC (struct reggroup_el));
271 add_group (&default_groups, float_reggroup, XMALLOC (struct reggroup_el));
272 add_group (&default_groups, system_reggroup, XMALLOC (struct reggroup_el));
273 add_group (&default_groups, vector_reggroup, XMALLOC (struct reggroup_el));
274 add_group (&default_groups, all_reggroup, XMALLOC (struct reggroup_el));
275 add_group (&default_groups, save_reggroup, XMALLOC (struct reggroup_el));
276 add_group (&default_groups, restore_reggroup, XMALLOC (struct reggroup_el));
278 add_cmd ("reggroups", class_maintenance,
279 maintenance_print_reggroups, "\
280 Print the internal register group names.\n\
281 Takes an optional file parameter.",
282 &maintenanceprintlist);