/* Cache and manage the values of registers for GDB, the GNU debugger.
- Copyright (C) 1986-2013 Free Software Foundation, Inc.
+ Copyright (C) 1986-2015 Free Software Foundation, Inc.
This file is part of GDB.
#ifndef REGCACHE_H
#define REGCACHE_H
+#include "common-regcache.h"
+
struct regcache;
+struct regset;
struct gdbarch;
struct address_space;
/* Special routines to read/write the PC. */
-extern CORE_ADDR regcache_read_pc (struct regcache *regcache);
+/* For regcache_read_pc see common/common-regcache.h. */
extern void regcache_write_pc (struct regcache *regcache, CORE_ADDR pc);
/* Transfer a raw register [0..NUM_REGS) between the regcache and the
extern void regcache_raw_collect (const struct regcache *regcache,
int regnum, void *buf);
+/* Mapping between register numbers and offsets in a buffer, for use
+ in the '*regset' functions below. In an array of
+ 'regcache_map_entry' each element is interpreted like follows:
+
+ - If 'regno' is a register number: Map register 'regno' to the
+ current offset (starting with 0) and increase the current offset
+ by 'size' (or the register's size, if 'size' is zero). Repeat
+ this with consecutive register numbers up to 'regno+count-1'.
+
+ - If 'regno' is REGCACHE_MAP_SKIP: Add 'count*size' to the current
+ offset.
+
+ - If count=0: End of the map. */
+
+struct regcache_map_entry
+{
+ int count;
+ int regno;
+ int size;
+};
+
+/* Special value for the 'regno' field in the struct above. */
+
+enum
+ {
+ REGCACHE_MAP_SKIP = -1,
+ };
+
+/* Transfer a set of registers (as described by REGSET) between
+ REGCACHE and BUF. If REGNUM == -1, transfer all registers
+ belonging to the regset, otherwise just the register numbered
+ REGNUM. The REGSET's 'regmap' field must point to an array of
+ 'struct regcache_map_entry'.
+
+ These functions are suitable for the 'regset_supply' and
+ 'regset_collect' fields in a regset structure. */
+
+extern void regcache_supply_regset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *buf,
+ size_t size);
+extern void regcache_collect_regset (const struct regset *regset,
+ const struct regcache *regcache,
+ int regnum, void *buf, size_t size);
+
/* The type of a register. This function is slightly more efficient
then its gdbarch vector counterpart since it returns a precomputed
/* 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.
+ go through to the target. See also regcache_cpy_no_passthrough.
- ``no passthrough'' versions do not go through to the target. They
- only transfer values already in the cache. */
+ regcache_cpy can not have overlapping SRC and DST buffers. */
extern struct regcache *regcache_dup (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);
extern void registers_changed_ptid (ptid_t);