arm-tdep.c: Remove unused arm_displaced_step_copy_insn

[deliverable/binutils-gdb.git] / gdb / reggroups.c

diff --git a/gdb/reggroups.c b/gdb/reggroups.c
index a4e1d3178c87d07d948be6fe6b2f95be029a8c0e..f8e7abd865b7f8ee8ba8822817506b3ebe261a27 100644 (file)
--- a/gdb/reggroups.c
+++ b/gdb/reggroups.c
@@ -1,6 +1,6 @@
 /* Register groupings for GDB, the GNU debugger.
 
-   Copyright (C) 2002, 2003, 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2002-2016 Free Software Foundation, Inc.
 
    Contributed by Red Hat.
 
@@ -20,9 +20,9 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #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.  */
@@ -38,7 +38,8 @@ struct reggroup
 struct reggroup *
 reggroup_new (const char *name, enum reggroup_type type)
 {
-  struct reggroup *group = XMALLOC (struct reggroup);
+  struct reggroup *group = XNEW (struct reggroup);
+
   group->name = name;
   group->type = type;
   return group;
@@ -79,6 +80,7 @@ reggroups_init (struct gdbarch *gdbarch)
 {
   struct reggroups *groups = GDBARCH_OBSTACK_ZALLOC (gdbarch,
                                                     struct reggroups);
+
   groups->last = &groups->first;
   return groups;
 }
@@ -100,13 +102,14 @@ add_group (struct reggroups *groups, struct reggroup *group,
 void
 reggroup_add (struct gdbarch *gdbarch, struct 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);
+      groups = (struct reggroups *) reggroups_init (gdbarch);
       deprecated_set_gdbarch_data (gdbarch, reggroups_data, groups);
     }
   add_group (groups, group,
@@ -127,7 +130,7 @@ reggroup_next (struct gdbarch *gdbarch, struct reggroup *last)
 
   /* 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);
+  groups = (struct reggroups *) gdbarch_data (gdbarch, reggroups_data);
   gdb_assert (groups != NULL);
   if (groups->first == NULL)
     groups = &default_groups;
@@ -148,6 +151,35 @@ reggroup_next (struct gdbarch *gdbarch, struct reggroup *last)
   return NULL;
 }
 
+/* See reggroups.h.  */
+
+struct reggroup *
+reggroup_prev (struct gdbarch *gdbarch, struct reggroup *curr)
+{
+  struct reggroups *groups;
+  struct reggroup_el *el;
+  struct reggroup *prev;
+
+  /* Don't allow this function to be called during architecture
+     creation.  If there are no groups, use the default groups list.  */
+  groups = (struct reggroups *) gdbarch_data (gdbarch, reggroups_data);
+  gdb_assert (groups != NULL);
+  if (groups->first == NULL)
+    groups = &default_groups;
+
+  prev = NULL;
+  for (el = groups->first; el != NULL; el = el->next)
+    {
+      gdb_assert (el->group != NULL);
+      if (el->group == curr)
+       return prev;
+      prev = el->group;
+    }
+  if (curr == NULL)
+    return prev;
+  return NULL;
+}
+
 /* Is REGNUM a member of REGGROUP?  */
 int
 default_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
@@ -188,6 +220,7 @@ reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file)
       /* Group name.  */
       {
        const char *name;
+
        if (group == NULL)
          name = "Group";
        else
@@ -198,6 +231,7 @@ reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file)
       /* Group type.  */
       {
        const char *type;
+
        if (group == NULL)
          type = "Type";
        else
@@ -230,16 +264,19 @@ reggroups_dump (struct gdbarch *gdbarch, struct ui_file *file)
 static void
 maintenance_print_reggroups (char *args, int from_tty)
 {
+  struct gdbarch *gdbarch = get_current_arch ();
+
   if (args == NULL)
-    reggroups_dump (current_gdbarch, gdb_stdout);
+    reggroups_dump (gdbarch, gdb_stdout);
   else
     {
       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 (current_gdbarch, file);    
+      reggroups_dump (gdbarch, file);
       do_cleanups (cleanups);
     }
 }
@@ -269,13 +306,13 @@ _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_group (&default_groups, general_reggroup, XNEW (struct reggroup_el));
+  add_group (&default_groups, float_reggroup, XNEW (struct reggroup_el));
+  add_group (&default_groups, system_reggroup, XNEW (struct reggroup_el));
+  add_group (&default_groups, vector_reggroup, XNEW (struct reggroup_el));
+  add_group (&default_groups, all_reggroup, XNEW (struct reggroup_el));
+  add_group (&default_groups, save_reggroup, XNEW (struct reggroup_el));
+  add_group (&default_groups, restore_reggroup, XNEW (struct reggroup_el));
 
   add_cmd ("reggroups", class_maintenance,
           maintenance_print_reggroups, _("\