/* Cache and manage the values of registers for GDB, the GNU debugger.
- Copyright 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000,
+ Copyright (C) 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000,
2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#ifndef REGCACHE_H
#define REGCACHE_H
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, void *buf);
+void regcache_raw_read (struct regcache *regcache, int rawnum, gdb_byte *buf);
void regcache_raw_write (struct regcache *regcache, int rawnum,
- const void *buf);
+ 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,
write style operations. */
void regcache_raw_read_part (struct regcache *regcache, int regnum,
- int offset, int len, void *buf);
+ int offset, int len, gdb_byte *buf);
void regcache_raw_write_part (struct regcache *regcache, int regnum,
- int offset, int len, const void *buf);
+ int offset, int len, const gdb_byte *buf);
int regcache_valid_p (struct regcache *regcache, int regnum);
/* Transfer a cooked register [0..NUM_REGS+NUM_PSEUDO_REGS). */
-void regcache_cooked_read (struct regcache *regcache, int rawnum, void *buf);
+void regcache_cooked_read (struct regcache *regcache, int rawnum,
+ gdb_byte *buf);
void regcache_cooked_write (struct regcache *regcache, int rawnum,
- const void *buf);
+ 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
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, void *buf);
+ int offset, int len, gdb_byte *buf);
void regcache_cooked_write_part (struct regcache *regcache, int regnum,
- int offset, int len, const void *buf);
+ 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 supply_register (int regnum, const void *val);
-extern void regcache_collect (int regnum, void *buf);
+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 register's ``offset''.
- FIXME: cagney/2002-11-07: The get_saved_register() function, when
+ FIXME: cagney/2002-11-07: The frame_register() function, when
specifying the real location of a register, does so using that
registers offset in the register cache. That offset is then used
by valops.c to determine the location of the register. The code
extern int register_offset_hack (struct gdbarch *gdbarch, int regnum);
+/* Similar. The total number of bytes occupied by a regcache. */
-/* 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 int deprecated_register_bytes (void );
- NOTE: cagney/2002-08-17: The original macro was called
- REGISTER_VIRTUAL_TYPE. This was because the register could have
- different raw and cooked (nee virtual) representations. The
- CONVERTABLE methods being used to convert between the two
- representations. Current code does not do this. Instead, the
- first [0..NUM_REGS) registers are 1:1 raw:cooked, and the type
- exactly describes the register's representation. Consequently, the
- ``virtual'' has been dropped.
- FIXME: cagney/2002-08-17: A number of architectures, including the
- MIPS, are currently broken in this regard. */
+/* 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 the largest register. Used when allocating
- space for an aribtrary register value. */
+/* Return the size of register REGNUM. All registers should have only
+ one size. */
+
+extern int register_size (struct gdbarch *gdbarch, int regnum);
-extern int max_register_size (struct gdbarch *gdbarch);
+/* 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. */
-/* Save/restore a register cache. The registers saved/restored is
- determined by the save_reggroup and restore_reggroup (although you
- can't restore a register that wasn't saved as well :-). You can
- only save to a read-only cache (default from regcache_xmalloc())
- from a live cache and you can only restore from a read-only cache
- to a live cache. */
+typedef int (regcache_cooked_read_ftype) (void *src, int regnum,
+ gdb_byte *buf);
-extern void regcache_save (struct regcache *dst, struct regcache *src);
-extern void regcache_restore (struct regcache *dst, struct regcache *src);
+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
method, there should already be a non-deprecated variant that is
parameterized with FRAME or REGCACHE. */
-extern char *deprecated_grub_regcache_for_registers (struct regcache *);
-extern char *deprecated_grub_regcache_for_register_valid (struct regcache *);
-extern void deprecated_read_register_gen (int regnum, char *myaddr);
-extern void deprecated_write_register_gen (int regnum, char *myaddr);
-extern void deprecated_read_register_bytes (int regbyte, char *myaddr,
+extern gdb_byte *deprecated_grub_regcache_for_registers (struct regcache *);
+extern void deprecated_read_register_gen (int regnum, gdb_byte *myaddr);
+extern void deprecated_write_register_gen (int regnum, gdb_byte *myaddr);
+extern void deprecated_read_register_bytes (int regbyte, gdb_byte *myaddr,
int len);
-extern void deprecated_write_register_bytes (int regbyte, char *myaddr,
+extern void deprecated_write_register_bytes (int regbyte, gdb_byte *myaddr,
int len);
-/* Character array containing the current state of each register
- (unavailable<0, invalid=0, valid>0) for the most recently
- referenced thread. This global is often found in close proximity
- to code that is directly manipulating the deprecated_registers[]
- array. In such cases, it should be possible to replace the lot
- with a call to supply_register(). If you find yourself in dire
- straits, still needing access to the cache status bit, the
- regcache_valid_p() and set_register_cached() functions are
- available. */
-extern signed char *deprecated_register_valid;
-
-/* Character array containing an image of the inferior programs'
- registers for the most recently referenced thread.
-
- NOTE: cagney/2002-11-14: Target side code should be using
- supply_register() and/or regcache_collect() while architecture side
- code should use the more generic regcache methods. */
-
-extern char *deprecated_registers;
-
-/* NOTE: cagney/2002-11-05: This function, and its co-conspirator
- deprecated_registers[], have been superseeded by supply_register(). */
+/* NOTE: cagney/2002-11-05: This function has been superseeded by
+ regcache_raw_supply(). */
extern void deprecated_registers_fetched (void);
extern int register_cached (int regnum);
/* Rename to read_unsigned_register_pid()? */
extern ULONGEST read_register_pid (int regnum, ptid_t ptid);
-extern LONGEST read_signed_register (int regnum);
-
-extern LONGEST read_signed_register_pid (int regnum, ptid_t ptid);
-
extern void write_register (int regnum, LONGEST val);
extern void write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid);
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