/* 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.
-
- The below map that model onto the real register cache. New code
- should go out of their way to avoid using these interfaces.
-
- 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. */
+ FIXME: cagney/2002-11-07: The get_saved_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. */
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);
/* The type of a register. This function is slightly more efficient
extern int max_register_size (struct gdbarch *gdbarch);
-/* DEPRECATED: Character array containing an image of the inferior
- programs' registers for the most recently referenced thread. */
+/* 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. */
-extern char *registers;
+extern void regcache_save (struct regcache *dst, struct regcache *src);
+extern void regcache_restore (struct regcache *dst, struct regcache *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
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(). */
extern void deprecated_registers_fetched (void);
extern void set_register_cached (int regnum, int state);
-extern void register_changed (int regnum);
-
extern void registers_changed (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);
projects / deliverable / binutils-gdb.git / blobdiff