gdb/gdbserver/regcache.h

   1 /* Register support routines for the remote server for GDB.
   2    Copyright (C) 2001, 2002, 2007, 2008, 2009, 2010, 2011
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef REGCACHE_H
  21 #define REGCACHE_H
  22
  23 struct inferior_list_entry;
  24 struct thread_info;
  25
  26 /* The data for the register cache.  Note that we have one per
  27    inferior; this is primarily for simplicity, as the performance
  28    benefit is minimal.  */
  29
  30 struct regcache
  31 {
  32   int registers_valid;
  33   int registers_owned;
  34   unsigned char *registers;
  35 };
  36
  37 struct regcache *init_register_cache (struct regcache *regcache,
  38                                       unsigned char *regbuf);
  39
  40 void regcache_cpy (struct regcache *dst, struct regcache *src);
  41
  42 /* Create a new register cache for INFERIOR.  */
  43
  44 struct regcache *new_register_cache (void);
  45
  46 struct regcache *get_thread_regcache (struct thread_info *thread, int fetch);
  47
  48 /* Release all memory associated with the register cache for INFERIOR.  */
  49
  50 void free_register_cache (struct regcache *regcache);
  51
  52 /* Invalidate cached registers for one or all threads.  */
  53
  54 void regcache_invalidate_one (struct inferior_list_entry *);
  55 void regcache_invalidate (void);
  56
  57 /* Convert all registers to a string in the currently specified remote
  58    format.  */
  59
  60 void registers_to_string (struct regcache *regcache, char *buf);
  61
  62 /* Convert a string to register values and fill our register cache.  */
  63
  64 void registers_from_string (struct regcache *regcache, char *buf);
  65
  66 CORE_ADDR regcache_read_pc (struct regcache *regcache);
  67
  68 void regcache_write_pc (struct regcache *regcache, CORE_ADDR pc);
  69
  70 /* Return a pointer to the description of register ``n''.  */
  71
  72 struct reg *find_register_by_number (int n);
  73
  74 int register_size (int n);
  75
  76 int register_cache_size (void);
  77
  78 int find_regno (const char *name);
  79
  80 /* The following two variables are set by auto-generated
  81    code in the init_registers_... routines.  */
  82 extern const char **gdbserver_expedite_regs;
  83 extern const char *gdbserver_xmltarget;
  84
  85 void supply_register (struct regcache *regcache, int n, const void *buf);
  86
  87 void supply_register_by_name (struct regcache *regcache,
  88                               const char *name, const void *buf);
  89
  90 void supply_regblock (struct regcache *regcache, const void *buf);
  91
  92 void collect_register (struct regcache *regcache, int n, void *buf);
  93
  94 void collect_register_as_string (struct regcache *regcache, int n, char *buf);
  95
  96 void collect_register_by_name (struct regcache *regcache, const char *name, void *buf);
  97
  98 #endif /* REGCACHE_H */