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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [regcache.h] - Blame information for rev 157

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1 24 jeremybenn
/* Cache and manage the values of registers for GDB, the GNU debugger.
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   Copyright (C) 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, 2001,
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   2002, 2007, 2008 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#ifndef REGCACHE_H
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#define REGCACHE_H
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struct regcache;
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struct gdbarch;
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extern struct regcache *get_current_regcache (void);
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extern struct regcache *get_thread_regcache (ptid_t ptid);
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void regcache_xfree (struct regcache *regcache);
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struct cleanup *make_cleanup_regcache_xfree (struct regcache *regcache);
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struct regcache *regcache_xmalloc (struct gdbarch *gdbarch);
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/* Return REGCACHE's architecture.  */
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extern struct gdbarch *get_regcache_arch (const struct regcache *regcache);
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/* Transfer a raw register [0..NUM_REGS) between core-gdb and the
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   regcache. */
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void regcache_raw_read (struct regcache *regcache, int rawnum, gdb_byte *buf);
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void regcache_raw_write (struct regcache *regcache, int rawnum,
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                         const gdb_byte *buf);
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extern void regcache_raw_read_signed (struct regcache *regcache,
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                                      int regnum, LONGEST *val);
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extern void regcache_raw_read_unsigned (struct regcache *regcache,
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                                        int regnum, ULONGEST *val);
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extern void regcache_raw_write_signed (struct regcache *regcache,
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                                       int regnum, LONGEST val);
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extern void regcache_raw_write_unsigned (struct regcache *regcache,
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                                         int regnum, ULONGEST val);
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/* Partial transfer of a raw registers.  These perform read, modify,
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   write style operations.  */
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void regcache_raw_read_part (struct regcache *regcache, int regnum,
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                             int offset, int len, gdb_byte *buf);
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void regcache_raw_write_part (struct regcache *regcache, int regnum,
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                              int offset, int len, const gdb_byte *buf);
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int regcache_valid_p (const struct regcache *regcache, int regnum);
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void regcache_invalidate (struct regcache *regcache, int regnum);
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/* Transfer a cooked register [0..NUM_REGS+NUM_PSEUDO_REGS).  */
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void regcache_cooked_read (struct regcache *regcache, int rawnum,
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                           gdb_byte *buf);
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void regcache_cooked_write (struct regcache *regcache, int rawnum,
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                            const gdb_byte *buf);
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/* NOTE: cagney/2002-08-13: At present GDB has no reliable mechanism
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   for indicating when a ``cooked'' register was constructed from
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   invalid or unavailable ``raw'' registers.  One fairly easy way of
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   adding such a mechanism would be for the cooked functions to return
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   a register valid indication.  Given the possibility of such a
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   change, the extract functions below use a reference parameter,
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   rather than a function result.  */
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/* Read a register as a signed/unsigned quantity.  */
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extern void regcache_cooked_read_signed (struct regcache *regcache,
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                                         int regnum, LONGEST *val);
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extern void regcache_cooked_read_unsigned (struct regcache *regcache,
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                                           int regnum, ULONGEST *val);
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extern void regcache_cooked_write_signed (struct regcache *regcache,
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                                          int regnum, LONGEST val);
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extern void regcache_cooked_write_unsigned (struct regcache *regcache,
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                                            int regnum, ULONGEST val);
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/* Partial transfer of a cooked register.  These perform read, modify,
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   write style operations.  */
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void regcache_cooked_read_part (struct regcache *regcache, int regnum,
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                                int offset, int len, gdb_byte *buf);
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void regcache_cooked_write_part (struct regcache *regcache, int regnum,
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                                 int offset, int len, const gdb_byte *buf);
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/* Transfer a raw register [0..NUM_REGS) between the regcache and the
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   target.  These functions are called by the target in response to a
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   target_fetch_registers() or target_store_registers().  */
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extern void regcache_raw_supply (struct regcache *regcache,
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                                 int regnum, const void *buf);
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extern void regcache_raw_collect (const struct regcache *regcache,
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                                  int regnum, void *buf);
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/* The type of a register.  This function is slightly more efficient
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   then its gdbarch vector counterpart since it returns a precomputed
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   value stored in a table.  */
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extern struct type *register_type (struct gdbarch *gdbarch, int regnum);
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/* Return the size of register REGNUM.  All registers should have only
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   one size.  */
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extern int register_size (struct gdbarch *gdbarch, int regnum);
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/* Save/restore a register cache.  The set of registers saved /
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   restored into the DST regcache determined by the save_reggroup /
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   restore_reggroup respectively.  COOKED_READ returns zero iff the
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   register's value can't be returned.  */
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typedef int (regcache_cooked_read_ftype) (void *src, int regnum,
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                                          gdb_byte *buf);
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extern void regcache_save (struct regcache *dst,
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                           regcache_cooked_read_ftype *cooked_read,
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                           void *cooked_read_context);
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extern void regcache_restore (struct regcache *dst,
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                              regcache_cooked_read_ftype *cooked_read,
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                              void *cooked_read_context);
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/* Copy/duplicate the contents of a register cache.  By default, the
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   operation is pass-through.  Writes to DST and reads from SRC will
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   go through to the target.
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   The ``cpy'' functions can not have overlapping SRC and DST buffers.
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   ``no passthrough'' versions do not go through to the target.  They
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   only transfer values already in the cache.  */
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extern struct regcache *regcache_dup (struct regcache *regcache);
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extern struct regcache *regcache_dup_no_passthrough (struct regcache *regcache);
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extern void regcache_cpy (struct regcache *dest, struct regcache *src);
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extern void regcache_cpy_no_passthrough (struct regcache *dest, struct regcache *src);
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extern void registers_changed (void);
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#endif /* REGCACHE_H */

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