271 lines
7.1 KiB
C
271 lines
7.1 KiB
C
/* Register groupings for GDB, the GNU debugger.
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Copyright 2002 Free Software Foundation, Inc.
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Contributed by Red Hat.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "reggroups.h"
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#include "gdbtypes.h"
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#include "gdb_assert.h"
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#include "regcache.h"
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#include "command.h"
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#include "gdbcmd.h" /* For maintenanceprintlist. */
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/* Individual register groups. */
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struct reggroup
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{
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const char *name;
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enum reggroup_type type;
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};
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struct reggroup *
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reggroup_new (const char *name, enum reggroup_type type)
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{
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struct reggroup *group = XMALLOC (struct reggroup);
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group->name = name;
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group->type = type;
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return group;
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}
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/* Register group attributes. */
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const char *
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reggroup_name (struct reggroup *group)
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{
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return group->name;
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}
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enum reggroup_type
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reggroup_type (struct reggroup *group)
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{
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return group->type;
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}
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/* All the groups for a given architecture. */
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struct reggroups
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{
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int nr_group;
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struct reggroup **group;
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};
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static struct gdbarch_data *reggroups_data;
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static void *
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reggroups_init (struct gdbarch *gdbarch)
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{
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struct reggroups *groups = XMALLOC (struct reggroups);
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groups->nr_group = 0;
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groups->group = NULL;
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return groups;
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}
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static void
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reggroups_free (struct gdbarch *gdbarch, void *data)
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{
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struct reggroups *groups = data;
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xfree (groups->group);
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xfree (groups);
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}
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/* Add a register group (with attribute values) to the pre-defined
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list. This function can be called during architecture
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initialization and hence needs to handle NULL architecture groups. */
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static void
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add_group (struct reggroups *groups, struct reggroup *group)
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{
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gdb_assert (group != NULL);
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groups->nr_group++;
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groups->group = xrealloc (groups->group, (sizeof (struct reggroup *)
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* (groups->nr_group + 1)));
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groups->group[groups->nr_group - 1] = group;
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groups->group[groups->nr_group] = NULL;
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}
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void
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reggroup_add (struct gdbarch *gdbarch, struct reggroup *group)
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{
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struct reggroups *groups = gdbarch_data (gdbarch, reggroups_data);
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if (groups == NULL)
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{
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/* ULGH, called during architecture initialization. Patch
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things up. */
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groups = reggroups_init (gdbarch);
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set_gdbarch_data (gdbarch, reggroups_data, groups);
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}
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add_group (groups, group);
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}
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/* The register groups for the current architecture. Mumble something
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about the lifetime of the buffer.... */
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static struct reggroups *default_groups;
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struct reggroup * const*
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reggroups (struct gdbarch *gdbarch)
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{
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struct reggroups *groups = gdbarch_data (gdbarch, reggroups_data);
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/* Don't allow this function to be called during architecture
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creation. */
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gdb_assert (groups != NULL);
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if (groups->group == NULL)
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return default_groups->group;
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else
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return groups->group;
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}
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/* Is REGNUM a member of REGGROUP? */
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int
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default_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
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struct reggroup *group)
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{
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int vector_p;
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int float_p;
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int raw_p;
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if (REGISTER_NAME (regnum) == NULL
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|| *REGISTER_NAME (regnum) == '\0')
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return 0;
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if (group == all_reggroup)
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return 1;
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vector_p = TYPE_VECTOR (register_type (gdbarch, regnum));
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float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT;
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/* FIXME: cagney/2003-04-13: Can't yet use gdbarch_num_regs
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(gdbarch), as not all architectures are multi-arch. */
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raw_p = regnum < NUM_REGS;
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if (group == float_reggroup)
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return float_p;
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if (group == vector_reggroup)
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return vector_p;
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if (group == general_reggroup)
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return (!vector_p && !float_p);
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if (group == save_reggroup || group == restore_reggroup)
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return raw_p;
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return 0;
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}
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/* Dump out a table of register groups for the current architecture. */
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static void
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reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file)
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{
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struct reggroup *const *groups = reggroups (gdbarch);
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int i = -1;
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do
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{
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/* Group name. */
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{
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const char *name;
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if (i < 0)
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name = "Group";
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else
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name = reggroup_name (groups[i]);
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fprintf_unfiltered (file, " %-10s", name);
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}
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/* Group type. */
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{
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const char *type;
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if (i < 0)
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type = "Type";
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else
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{
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switch (reggroup_type (groups[i]))
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{
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case USER_REGGROUP:
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type = "user";
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break;
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case INTERNAL_REGGROUP:
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type = "internal";
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break;
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default:
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internal_error (__FILE__, __LINE__, "bad switch");
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}
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}
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fprintf_unfiltered (file, " %-10s", type);
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}
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/* Note: If you change this, be sure to also update the
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documentation. */
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fprintf_unfiltered (file, "\n");
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i++;
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}
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while (groups[i] != NULL);
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}
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static void
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maintenance_print_reggroups (char *args, int from_tty)
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{
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if (args == NULL)
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reggroups_dump (current_gdbarch, gdb_stdout);
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else
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{
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struct ui_file *file = gdb_fopen (args, "w");
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if (file == NULL)
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perror_with_name ("maintenance print reggroups");
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reggroups_dump (current_gdbarch, file);
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ui_file_delete (file);
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}
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}
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/* Pre-defined register groups. */
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static struct reggroup general_group = { "general", USER_REGGROUP };
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static struct reggroup float_group = { "float", USER_REGGROUP };
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static struct reggroup system_group = { "system", USER_REGGROUP };
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static struct reggroup vector_group = { "vector", USER_REGGROUP };
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static struct reggroup all_group = { "all", USER_REGGROUP };
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static struct reggroup save_group = { "save", INTERNAL_REGGROUP };
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static struct reggroup restore_group = { "restore", INTERNAL_REGGROUP };
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struct reggroup *const general_reggroup = &general_group;
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struct reggroup *const float_reggroup = &float_group;
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struct reggroup *const system_reggroup = &system_group;
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struct reggroup *const vector_reggroup = &vector_group;
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struct reggroup *const all_reggroup = &all_group;
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struct reggroup *const save_reggroup = &save_group;
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struct reggroup *const restore_reggroup = &restore_group;
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void
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_initialize_reggroup (void)
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{
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reggroups_data = register_gdbarch_data (reggroups_init, reggroups_free);
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/* The pre-defined list of groups. */
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default_groups = reggroups_init (NULL);
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add_group (default_groups, general_reggroup);
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add_group (default_groups, float_reggroup);
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add_group (default_groups, system_reggroup);
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add_group (default_groups, vector_reggroup);
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add_group (default_groups, all_reggroup);
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add_group (default_groups, save_reggroup);
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add_group (default_groups, restore_reggroup);
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add_cmd ("reggroups", class_maintenance,
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maintenance_print_reggroups, "\
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Print the internal register group names.\n\
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Takes an optional file parameter.",
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&maintenanceprintlist);
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}
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