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. */
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. */
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''.
- NOTE: cagney/2002-08-17: The ``struct value'' and expression
- evaluator treat the register cache as a large liner buffer.
- Instead of reading/writing a register using its register number,
- the code read/writes registers by specifying their offset into the
- buffer and a number of bytes. The code also assumes that these
- byte read/writes can cross register boundaries, adjacent registers
- treated as a contiguous set of bytes.
+ 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
+ should instead use the register's number and a location expression
+ to describe a value spread across multiple registers or memory. */
- The below map that model onto the real register cache. New code
- should go out of their way to avoid using these interfaces.
+extern int register_offset_hack (struct gdbarch *gdbarch, int regnum);
- FIXME: cagney/2002-08-17: The ``struct value'' and expression
- evaluator should be fixed. Instead of using the { offset, length }
- pair to describe a value within one or more registers, the code
- should use a chain of { regnum, offset, len } tripples. */
+/* Similar. The total number of bytes occupied by a regcache. */
-extern int register_offset_hack (struct gdbarch *gdbarch, int regnum);
-extern void regcache_cooked_read_using_offset_hack (struct regcache *regcache,
- int offset, int len,
- void *buf);
-extern void regcache_cooked_write_using_offset_hack (struct regcache *regcache,
- int offset, int len,
- const void *buf);
+extern int deprecated_register_bytes (void );
/* 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.
-
- 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. */
+ 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. */
-
-extern int max_register_size (struct gdbarch *gdbarch);
+/* Return the size of register REGNUM. All registers should have only
+ one size. */
+
+extern int register_size (struct gdbarch *gdbarch, int regnum);
-/* DEPRECATED: Character array containing an image of the inferior
- programs' registers for the most recently referenced thread. */
+/* 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. */
-extern char *registers;
+typedef int (regcache_cooked_read_ftype) (void *src, int regnum, void *buf);
-/* DEPRECATED: Character array containing the current state of each
- register (unavailable<0, invalid=0, valid>0) for the most recently
- referenced thread. */
-
-extern signed char *register_valid;
+extern void regcache_save (struct regcache *dst,
+ regcache_cooked_read_ftype *cooked_read,
+ void *src);
+extern void regcache_restore (struct regcache *dst,
+ regcache_cooked_read_ftype *cooked_read,
+ void *src);
/* Copy/duplicate the contents of a register cache. By default, the
operation is pass-through. Writes to DST and reads from SRC will
simple substitution is required when updating the code. The
change, as far as practical, should avoid adding references to
global variables (e.g., current_regcache, current_frame,
- current_gdbarch or selected_frame) and instead refer to the FRAME
- or REGCACHE that has been passed into the containing function as
- parameters. Consequently, the change typically involves modifying
- the containing function so that it takes a FRAME or REGCACHE
- parameter. In the case of an architecture vector method, there
- should already be a non-deprecated variant that is parameterized
- with FRAME or REGCACHE. */
+ current_gdbarch or deprecated_selected_frame) and instead refer to
+ the FRAME or REGCACHE that has been passed into the containing
+ function as parameters. Consequently, the change typically
+ involves modifying the containing function so that it takes a FRAME
+ or REGCACHE parameter. In the case of an architecture vector
+ 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,
+ int len);
+extern void deprecated_write_register_bytes (int regbyte, char *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 regcache_raw_supply(). 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
+ regcache_raw_supply() 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
+ regcache_raw_supply(). */
+extern void deprecated_registers_fetched (void);
extern int register_cached (int regnum);
extern void set_register_cached (int regnum, int state);
-extern void register_changed (int regnum);
-
extern void registers_changed (void);
-extern void registers_fetched (void);
-
-extern void read_register_bytes (int regbyte, char *myaddr, int len);
-
-extern void write_register_bytes (int regbyte, char *myaddr, int len);
/* Rename to read_unsigned_register()? */
extern ULONGEST read_register (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);