1 /* Register support routines for the remote server for GDB.
2 Copyright (C) 2001-2013 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 struct inferior_list_entry;
26 /* The register exists, it has a value, but we don't know what it is.
27 Used when inspecting traceframes. */
28 #define REG_UNAVAILABLE 0
30 /* We know the register's value (and we have it cached). */
33 /* The data for the register cache. Note that we have one per
34 inferior; this is primarily for simplicity, as the performance
35 benefit is minimal. */
39 /* The regcache's target description. */
40 const struct target_desc *tdesc;
42 /* Whether the REGISTERS buffer's contents are valid. If false, we
43 haven't fetched the registers from the target yet. Not that this
44 register cache is _not_ pass-through, unlike GDB's. Note that
45 "valid" here is unrelated to whether the registers are available
46 in a traceframe. For that, check REGISTER_STATUS below. */
49 unsigned char *registers;
50 #ifndef IN_PROCESS_AGENT
51 /* One of REG_UNAVAILBLE or REG_VALID. */
52 unsigned char *register_status;
56 struct regcache *init_register_cache (struct regcache *regcache,
57 const struct target_desc *tdesc,
58 unsigned char *regbuf);
60 void regcache_cpy (struct regcache *dst, struct regcache *src);
62 /* Create a new register cache for INFERIOR. */
64 struct regcache *new_register_cache (const struct target_desc *tdesc);
66 struct regcache *get_thread_regcache (struct thread_info *thread, int fetch);
68 /* Release all memory associated with the register cache for INFERIOR. */
70 void free_register_cache (struct regcache *regcache);
72 /* Invalidate cached registers for one thread. */
74 void regcache_invalidate_thread (struct thread_info *);
76 /* Invalidate cached registers for all threads of the current
79 void regcache_invalidate (void);
81 /* Invalidate and release the register cache of all threads of the
84 void regcache_release (void);
86 /* Convert all registers to a string in the currently specified remote
89 void registers_to_string (struct regcache *regcache, char *buf);
91 /* Convert a string to register values and fill our register cache. */
93 void registers_from_string (struct regcache *regcache, char *buf);
95 CORE_ADDR regcache_read_pc (struct regcache *regcache);
97 void regcache_write_pc (struct regcache *regcache, CORE_ADDR pc);
99 /* Return a pointer to the description of register ``n''. */
101 struct reg *find_register_by_number (const struct target_desc *tdesc, int n);
103 int register_cache_size (const struct target_desc *tdesc);
105 int register_size (const struct target_desc *tdesc, int n);
107 int find_regno (const struct target_desc *tdesc, const char *name);
109 void supply_register (struct regcache *regcache, int n, const void *buf);
111 void supply_register_zeroed (struct regcache *regcache, int n);
113 void supply_register_by_name (struct regcache *regcache,
114 const char *name, const void *buf);
116 void supply_regblock (struct regcache *regcache, const void *buf);
118 void collect_register (struct regcache *regcache, int n, void *buf);
120 void collect_register_as_string (struct regcache *regcache, int n, char *buf);
122 void collect_register_by_name (struct regcache *regcache,
123 const char *name, void *buf);
125 #endif /* REGCACHE_H */