/* Register groupings for GDB, the GNU debugger.
- Copyright (C) 2002, 2003, 2007, 2008, 2009, 2010
- Free Software Foundation, Inc.
+ Copyright (C) 2002-2022 Free Software Foundation, Inc.
Contributed by Red Hat.
#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. */
+#include "gdbsupport/gdb_obstack.h"
-/* Individual register groups. */
+/* See reggroups.h. */
-struct reggroup
-{
- const char *name;
- enum reggroup_type type;
-};
-
-struct reggroup *
+const reggroup *
reggroup_new (const char *name, enum reggroup_type type)
{
- struct reggroup *group = XMALLOC (struct reggroup);
- group->name = name;
- group->type = type;
- return group;
+ return new reggroup (name, type);
}
-/* Register group attributes. */
+/* See reggroups.h. */
-const char *
-reggroup_name (struct reggroup *group)
+const reggroup *
+reggroup_gdbarch_new (struct gdbarch *gdbarch, const char *name,
+ enum reggroup_type type)
{
- return group->name;
+ name = gdbarch_obstack_strdup (gdbarch, name);
+ return obstack_new<struct reggroup> (gdbarch_obstack (gdbarch),
+ name, type);
}
-enum reggroup_type
-reggroup_type (struct reggroup *group)
+/* A container holding all the register groups for a particular
+ architecture. */
+
+struct reggroups
{
- return group->type;
-}
+ /* Add GROUP to the list of register groups. */
-/* A linked list of groups for the given architecture. */
+ void add (const reggroup *group)
+ {
+ gdb_assert (group != nullptr);
+ gdb_assert (std::find (m_groups.begin(), m_groups.end(), group)
+ == m_groups.end());
-struct reggroup_el
-{
- struct reggroup *group;
- struct reggroup_el *next;
-};
+ m_groups.push_back (group);
+ }
-struct reggroups
-{
- struct reggroup_el *first;
- struct reggroup_el **last;
-};
+ /* The number of register groups. */
-static struct gdbarch_data *reggroups_data;
+ std::vector<struct reggroup *>::size_type
+ size () const
+ {
+ return m_groups.size ();
+ }
-static void *
-reggroups_init (struct gdbarch *gdbarch)
-{
- struct reggroups *groups = GDBARCH_OBSTACK_ZALLOC (gdbarch,
- struct reggroups);
- groups->last = &groups->first;
- return groups;
-}
+ /* Return a reference to the list of all groups. */
-/* Add a register group (with attribute values) to the pre-defined
- list. */
+ const std::vector<const struct reggroup *> &
+ groups () const
+ {
+ return m_groups;
+ }
-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;
-}
+private:
+ /* The register groups. */
+ std::vector<const struct reggroup *> m_groups;
+};
+
+/* Key used to lookup register group data from a gdbarch. */
+
+static struct gdbarch_data *reggroups_data;
+
+/* See reggroups.h. */
void
-reggroup_add (struct gdbarch *gdbarch, struct reggroup *group)
+reggroup_add (struct gdbarch *gdbarch, const reggroup *group)
{
- struct reggroups *groups = gdbarch_data (gdbarch, reggroups_data);
+ struct reggroups *groups
+ = (struct reggroups *) 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));
+ gdb_assert (groups != nullptr);
+ gdb_assert (group != nullptr);
+
+ groups->add (group);
}
-/* The default register groups for an architecture. */
+/* Called to initialize the per-gdbarch register group information. */
-static struct reggroups default_groups = { NULL, &default_groups.first };
+static void *
+reggroups_init (struct obstack *obstack)
+{
+ struct reggroups *groups = obstack_new<struct reggroups> (obstack);
-/* A register group iterator. */
+ /* Add the default groups. */
+ groups->add (general_reggroup);
+ groups->add (float_reggroup);
+ groups->add (system_reggroup);
+ groups->add (vector_reggroup);
+ groups->add (all_reggroup);
+ groups->add (save_reggroup);
+ groups->add (restore_reggroup);
-struct reggroup *
-reggroup_next (struct gdbarch *gdbarch, struct reggroup *last)
+ return groups;
+}
+
+/* See reggroups.h. */
+const std::vector<const reggroup *> &
+gdbarch_reggroups (struct gdbarch *gdbarch)
{
- 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;
- else
- return NULL;
- }
- }
- return NULL;
+ struct reggroups *groups
+ = (struct reggroups *) gdbarch_data (gdbarch, reggroups_data);
+ gdb_assert (groups != nullptr);
+ gdb_assert (groups->size () > 0);
+ return groups->groups ();
}
-/* Is REGNUM a member of REGGROUP? */
+/* See reggroups.h. */
+
int
default_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
- struct reggroup *group)
+ const struct reggroup *group)
{
int vector_p;
int float_p;
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;
+ vector_p = register_type (gdbarch, regnum)->is_vector ();
+ float_p = (register_type (gdbarch, regnum)->code () == TYPE_CODE_FLT
+ || (register_type (gdbarch, regnum)->code ()
+ == TYPE_CODE_DECFLOAT));
raw_p = regnum < gdbarch_num_regs (gdbarch);
if (group == float_reggroup)
return float_p;
return (!vector_p && !float_p);
if (group == save_reggroup || group == restore_reggroup)
return raw_p;
- return 0;
+ return 0;
+}
+
+/* See reggroups.h. */
+
+const reggroup *
+reggroup_find (struct gdbarch *gdbarch, const char *name)
+{
+ for (const struct reggroup *group : gdbarch_reggroups (gdbarch))
+ {
+ if (strcmp (name, group->name ()) == 0)
+ return group;
+ }
+ return NULL;
}
/* 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;
+ static constexpr const char *fmt = " %-10s %-10s\n";
+
+ gdb_printf (file, fmt, "Group", "Type");
- do
+ for (const struct reggroup *group : gdbarch_reggroups (gdbarch))
{
/* Group name. */
- {
- const char *name;
- if (group == NULL)
- name = "Group";
- else
- name = reggroup_name (group);
- fprintf_unfiltered (file, " %-10s", name);
- }
-
+ const char *name = group->name ();
+
/* Group type. */
- {
- const char *type;
- if (group == NULL)
- type = "Type";
- else
- {
- switch (reggroup_type (group))
- {
- case USER_REGGROUP:
- type = "user";
- break;
- case INTERNAL_REGGROUP:
- type = "internal";
- break;
- default:
- internal_error (__FILE__, __LINE__, _("bad switch"));
- }
- }
- fprintf_unfiltered (file, " %-10s", type);
- }
+ const char *type;
+
+ switch (group->type ())
+ {
+ case USER_REGGROUP:
+ type = "user";
+ break;
+ case INTERNAL_REGGROUP:
+ type = "internal";
+ break;
+ default:
+ internal_error (__FILE__, __LINE__, _("bad switch"));
+ }
/* Note: If you change this, be sure to also update the
- documentation. */
-
- fprintf_unfiltered (file, "\n");
+ documentation. */
- group = reggroup_next (gdbarch, group);
+ gdb_printf (file, fmt, name, type);
}
- while (group != NULL);
}
+/* Implement 'maintenance print reggroups' command. */
+
static void
-maintenance_print_reggroups (char *args, int from_tty)
+maintenance_print_reggroups (const char *args, int from_tty)
{
struct gdbarch *gdbarch = get_current_arch ();
reggroups_dump (gdbarch, gdb_stdout);
else
{
- struct cleanup *cleanups;
- struct ui_file *file = gdb_fopen (args, "w");
- if (file == NULL)
+ stdio_file file;
+
+ if (!file.open (args, "w"))
perror_with_name (_("maintenance print reggroups"));
- cleanups = make_cleanup_ui_file_delete (file);
- reggroups_dump (gdbarch, file);
- do_cleanups (cleanups);
+ reggroups_dump (gdbarch, &file);
}
}
/* 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 */
-
+static const reggroup general_group = { "general", USER_REGGROUP };
+static const reggroup float_group = { "float", USER_REGGROUP };
+static const reggroup system_group = { "system", USER_REGGROUP };
+static const reggroup vector_group = { "vector", USER_REGGROUP };
+static const reggroup all_group = { "all", USER_REGGROUP };
+static const reggroup save_group = { "save", INTERNAL_REGGROUP };
+static const reggroup restore_group = { "restore", INTERNAL_REGGROUP };
+
+const reggroup *const general_reggroup = &general_group;
+const reggroup *const float_reggroup = &float_group;
+const reggroup *const system_reggroup = &system_group;
+const reggroup *const vector_reggroup = &vector_group;
+const reggroup *const all_reggroup = &all_group;
+const reggroup *const save_reggroup = &save_group;
+const reggroup *const restore_reggroup = &restore_group;
+
+void _initialize_reggroup ();
void
-_initialize_reggroup (void)
+_initialize_reggroup ()
{
- 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));
+ reggroups_data = gdbarch_data_register_pre_init (reggroups_init);
add_cmd ("reggroups", class_maintenance,
maintenance_print_reggroups, _("\
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