gdb/regcache.h

   1 /* Cache and manage the values of registers for GDB, the GNU debugger.
   2
   3    Copyright 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000,
   4    2001, 2002 Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef REGCACHE_H
  24 #define REGCACHE_H
  25
  26 struct regcache;
  27 struct gdbarch;
  28
  29 extern struct regcache *current_regcache;
  30
  31 void regcache_xfree (struct regcache *regcache);
  32 struct regcache *regcache_xmalloc (struct gdbarch *gdbarch);
  33
  34 /* Transfer a raw register [0..NUM_REGS) between core-gdb and the
  35    regcache. */
  36
  37 void regcache_read (struct regcache *regcache, int rawnum, char *buf);
  38 void regcache_write (struct regcache *regcache, int rawnum, char *buf);
  39 int regcache_valid_p (struct regcache *regcache, int regnum);
  40 CORE_ADDR regcache_read_as_address (struct regcache *regcache, int rawnum);
  41
  42 /* Transfer a raw register [0..NUM_REGS) between the regcache and the
  43    target.  These functions are called by the target in response to a
  44    target_fetch_registers() or target_store_registers().  */
  45
  46 extern void supply_register (int regnum, char *val);
  47 extern void regcache_collect (int regnum, void *buf);
  48
  49
  50 /* DEPRECATED: Character array containing an image of the inferior
  51    programs' registers for the most recently referenced thread. */
  52
  53 extern char *registers;
  54
  55 /* DEPRECATED: Character array containing the current state of each
  56    register (unavailable<0, invalid=0, valid>0) for the most recently
  57    referenced thread. */
  58
  59 extern signed char *register_valid;
  60
  61 /* Copy/duplicate the contents of a register cache.  By default, the
  62    operation is pass-through.  Writes to DST and reads from SRC will
  63    go through to the target.
  64
  65    The ``cpy'' functions can not have overlapping SRC and DST buffers.
  66
  67    ``no passthrough'' versions do not go through to the target.  They
  68    only transfer values already in the cache.  */
  69
  70 extern struct regcache *regcache_dup (struct regcache *regcache);
  71 extern struct regcache *regcache_dup_no_passthrough (struct regcache *regcache);
  72 extern void regcache_cpy (struct regcache *dest, struct regcache *src);
  73 extern void regcache_cpy_no_passthrough (struct regcache *dest, struct regcache *src);
  74
  75 extern char *deprecated_grub_regcache_for_registers (struct regcache *);
  76 extern char *deprecated_grub_regcache_for_register_valid (struct regcache *);
  77
  78 extern int register_cached (int regnum);
  79
  80 extern void set_register_cached (int regnum, int state);
  81
  82 extern void register_changed (int regnum);
  83
  84 extern void registers_changed (void);
  85
  86 extern void registers_fetched (void);
  87
  88 extern void read_register_bytes (int regbyte, char *myaddr, int len);
  89
  90 extern void read_register_gen (int regnum, char *myaddr);
  91
  92 extern void write_register_gen (int regnum, char *myaddr);
  93
  94 extern void write_register_bytes (int regbyte, char *myaddr, int len);
  95
  96 /* Rename to read_unsigned_register()? */
  97 extern ULONGEST read_register (int regnum);
  98
  99 /* Rename to read_unsigned_register_pid()? */
 100 extern ULONGEST read_register_pid (int regnum, ptid_t ptid);
 101
 102 extern LONGEST read_signed_register (int regnum);
 103
 104 extern LONGEST read_signed_register_pid (int regnum, ptid_t ptid);
 105
 106 extern void write_register (int regnum, LONGEST val);
 107
 108 extern void write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid);
 109
 110 #endif /* REGCACHE_H */