gdb/reggroups.h

   1 /* Register groupings for GDB, the GNU debugger.
   2
   3    Copyright (C) 2002-2022 Free Software Foundation, Inc.
   4
   5    Contributed by Red Hat.
   6
   7    This file is part of GDB.
   8
   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 3 of the License, or
  12    (at your option) any later version.
  13
  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.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef REGGROUPS_H
  23 #define REGGROUPS_H
  24
  25 struct gdbarch;
  26
  27 /* The different register group types.  */
  28 enum reggroup_type {
  29   /* Used for any register group that should be visible to the user.
  30      Architecture specific register groups, as well as most of the default
  31      groups will have this type.  */
  32   USER_REGGROUP,
  33
  34   /* Used for a few groups that GDB uses while managing machine state.
  35      These groups are mostly hidden from the user.  */
  36   INTERNAL_REGGROUP
  37 };
  38
  39 /* Individual register group.  */
  40
  41 struct reggroup
  42 {
  43   /* Create a new register group object.  The NAME is not owned by the new
  44      reggroup object, so must outlive the object.  */
  45   reggroup (const char *name, enum reggroup_type type)
  46     : m_name (name),
  47       m_type (type)
  48   { /* Nothing.  */ }
  49
  50   /* Return the name for this register group.  */
  51   const char *name () const
  52   { return m_name; }
  53
  54   /* Return the type of this register group.  */
  55   enum reggroup_type type () const
  56   { return m_type; }
  57
  58 private:
  59   /* The name of this register group.  */
  60   const char *m_name;
  61
  62   /* The type of this register group.  */
  63   enum reggroup_type m_type;
  64 };
  65
  66 /* Pre-defined, user visible, register groups.  */
  67 extern const reggroup *const general_reggroup;
  68 extern const reggroup *const float_reggroup;
  69 extern const reggroup *const system_reggroup;
  70 extern const reggroup *const vector_reggroup;
  71 extern const reggroup *const all_reggroup;
  72
  73 /* Pre-defined, internal, register groups.  */
  74 extern const reggroup *const save_reggroup;
  75 extern const reggroup *const restore_reggroup;
  76
  77 /* Create a new local register group.  */
  78 extern const reggroup *reggroup_new (const char *name,
  79                                      enum reggroup_type type);
  80
  81 /* Create a new register group allocated onto the gdbarch obstack.  */
  82 extern const reggroup *reggroup_gdbarch_new (struct gdbarch *gdbarch,
  83                                              const char *name,
  84                                              enum reggroup_type type);
  85
  86 /* Add register group GROUP to the list of register groups for GDBARCH.  */
  87 extern void reggroup_add (struct gdbarch *gdbarch, const reggroup *group);
  88
  89 /* Return the list of all register groups for GDBARCH.  */
  90 extern const std::vector<const reggroup *> &
  91         gdbarch_reggroups (struct gdbarch *gdbarch);
  92
  93 /* Find a reggroup by name.  */
  94 extern const reggroup *reggroup_find (struct gdbarch *gdbarch,
  95                                       const char *name);
  96
  97 /* Is REGNUM a member of REGGROUP?  */
  98 extern int default_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
  99                                         const struct reggroup *reggroup);
 100
 101 #endif