blob: b4790503024a58f5ad72d6ab46fd7321978630a6 [file] [log] [blame]
/* Register groupings for GDB, the GNU debugger.
Copyright (C) 2002-2003, 2007-2012 Free Software Foundation, Inc.
Contributed by Red Hat.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <>. */
#include "defs.h"
#include "arch-utils.h"
#include "reggroups.h"
#include "gdbtypes.h"
#include "gdb_assert.h"
#include "regcache.h"
#include "command.h"
#include "gdbcmd.h" /* For maintenanceprintlist. */
/* Individual register groups. */
struct reggroup
const char *name;
enum reggroup_type type;
struct reggroup *
reggroup_new (const char *name, enum reggroup_type type)
struct reggroup *group = XMALLOC (struct reggroup);
group->name = name;
group->type = type;
return group;
/* Register group attributes. */
const char *
reggroup_name (struct reggroup *group)
return group->name;
enum reggroup_type
reggroup_type (struct reggroup *group)
return group->type;
/* A linked list of groups for the given architecture. */
struct reggroup_el
struct reggroup *group;
struct reggroup_el *next;
struct reggroups
struct reggroup_el *first;
struct reggroup_el **last;
static struct gdbarch_data *reggroups_data;
static void *
reggroups_init (struct gdbarch *gdbarch)
struct reggroups *groups = GDBARCH_OBSTACK_ZALLOC (gdbarch,
struct reggroups);
groups->last = &groups->first;
return groups;
/* Add a register group (with attribute values) to the pre-defined
list. */
static void
add_group (struct reggroups *groups, struct reggroup *group,
struct reggroup_el *el)
gdb_assert (group != NULL);
el->group = group;
el->next = NULL;
(*groups->last) = el;
groups->last = &el->next;
reggroup_add (struct gdbarch *gdbarch, struct reggroup *group)
struct reggroups *groups = gdbarch_data (gdbarch, reggroups_data);
if (groups == NULL)
/* ULGH, called during architecture initialization. Patch
things up. */
groups = reggroups_init (gdbarch);
deprecated_set_gdbarch_data (gdbarch, reggroups_data, groups);
add_group (groups, group,
GDBARCH_OBSTACK_ZALLOC (gdbarch, struct reggroup_el));
/* The default register groups for an architecture. */
static struct reggroups default_groups = { NULL, &default_groups.first };
/* A register group iterator. */
struct reggroup *
reggroup_next (struct gdbarch *gdbarch, struct reggroup *last)
struct reggroups *groups;
struct reggroup_el *el;
/* Don't allow this function to be called during architecture
creation. If there are no groups, use the default groups list. */
groups = gdbarch_data (gdbarch, reggroups_data);
gdb_assert (groups != NULL);
if (groups->first == NULL)
groups = &default_groups;
/* Return the first/next reggroup. */
if (last == NULL)
return groups->first->group;
for (el = groups->first; el != NULL; el = el->next)
if (el->group == last)
if (el->next != NULL)
return el->next->group;
return NULL;
return NULL;
/* Is REGNUM a member of REGGROUP? */
default_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
struct reggroup *group)
int vector_p;
int float_p;
int raw_p;
if (gdbarch_register_name (gdbarch, regnum) == NULL
|| *gdbarch_register_name (gdbarch, regnum) == '\0')
return 0;
if (group == all_reggroup)
return 1;
vector_p = TYPE_VECTOR (register_type (gdbarch, regnum));
float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT;
raw_p = regnum < gdbarch_num_regs (gdbarch);
if (group == float_reggroup)
return float_p;
if (group == vector_reggroup)
return vector_p;
if (group == general_reggroup)
return (!vector_p && !float_p);
if (group == save_reggroup || group == restore_reggroup)
return raw_p;
return 0;
/* Dump out a table of register groups for the current architecture. */
static void
reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file)
struct reggroup *group = NULL;
/* Group name. */
const char *name;
if (group == NULL)
name = "Group";
name = reggroup_name (group);
fprintf_unfiltered (file, " %-10s", name);
/* Group type. */
const char *type;
if (group == NULL)
type = "Type";
switch (reggroup_type (group))
type = "user";
type = "internal";
internal_error (__FILE__, __LINE__, _("bad switch"));
fprintf_unfiltered (file, " %-10s", type);
/* Note: If you change this, be sure to also update the
documentation. */
fprintf_unfiltered (file, "\n");
group = reggroup_next (gdbarch, group);
while (group != NULL);
static void
maintenance_print_reggroups (char *args, int from_tty)
struct gdbarch *gdbarch = get_current_arch ();
if (args == NULL)
reggroups_dump (gdbarch, gdb_stdout);
struct cleanup *cleanups;
struct ui_file *file = gdb_fopen (args, "w");
if (file == NULL)
perror_with_name (_("maintenance print reggroups"));
cleanups = make_cleanup_ui_file_delete (file);
reggroups_dump (gdbarch, file);
do_cleanups (cleanups);
/* Pre-defined register groups. */
static struct reggroup general_group = { "general", USER_REGGROUP };
static struct reggroup float_group = { "float", USER_REGGROUP };
static struct reggroup system_group = { "system", USER_REGGROUP };
static struct reggroup vector_group = { "vector", USER_REGGROUP };
static struct reggroup all_group = { "all", USER_REGGROUP };
static struct reggroup save_group = { "save", INTERNAL_REGGROUP };
static struct reggroup restore_group = { "restore", INTERNAL_REGGROUP };
struct reggroup *const general_reggroup = &general_group;
struct reggroup *const float_reggroup = &float_group;
struct reggroup *const system_reggroup = &system_group;
struct reggroup *const vector_reggroup = &vector_group;
struct reggroup *const all_reggroup = &all_group;
struct reggroup *const save_reggroup = &save_group;
struct reggroup *const restore_reggroup = &restore_group;
extern initialize_file_ftype _initialize_reggroup; /* -Wmissing-prototypes */
_initialize_reggroup (void)
reggroups_data = gdbarch_data_register_post_init (reggroups_init);
/* The pre-defined list of groups. */
add_group (&default_groups, general_reggroup, XMALLOC (struct reggroup_el));
add_group (&default_groups, float_reggroup, XMALLOC (struct reggroup_el));
add_group (&default_groups, system_reggroup, XMALLOC (struct reggroup_el));
add_group (&default_groups, vector_reggroup, XMALLOC (struct reggroup_el));
add_group (&default_groups, all_reggroup, XMALLOC (struct reggroup_el));
add_group (&default_groups, save_reggroup, XMALLOC (struct reggroup_el));
add_group (&default_groups, restore_reggroup, XMALLOC (struct reggroup_el));
add_cmd ("reggroups", class_maintenance,
maintenance_print_reggroups, _("\
Print the internal register group names.\n\
Takes an optional file parameter."),