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