1 /* Register support routines for the remote server for GDB.
2 Copyright (C) 2001-2015 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 #include "common-regcache.h"
27 /* The register exists, it has a value, but we don't know what it is.
28 Used when inspecting traceframes. */
29 #define REG_UNAVAILABLE 0
31 /* We know the register's value (and we have it cached). */
34 /* The data for the register cache. Note that we have one per
35 inferior; this is primarily for simplicity, as the performance
36 benefit is minimal. */
40 /* The regcache's target description. */
41 const struct target_desc
*tdesc
;
43 /* Whether the REGISTERS buffer's contents are valid. If false, we
44 haven't fetched the registers from the target yet. Not that this
45 register cache is _not_ pass-through, unlike GDB's. Note that
46 "valid" here is unrelated to whether the registers are available
47 in a traceframe. For that, check REGISTER_STATUS below. */
50 unsigned char *registers
;
51 #ifndef IN_PROCESS_AGENT
52 /* One of REG_UNAVAILBLE or REG_VALID. */
53 unsigned char *register_status
;
57 struct regcache
*init_register_cache (struct regcache
*regcache
,
58 const struct target_desc
*tdesc
,
59 unsigned char *regbuf
);
61 void regcache_cpy (struct regcache
*dst
, struct regcache
*src
);
63 /* Create a new register cache for INFERIOR. */
65 struct regcache
*new_register_cache (const struct target_desc
*tdesc
);
67 struct regcache
*get_thread_regcache (struct thread_info
*thread
, int fetch
);
69 /* Release all memory associated with the register cache for INFERIOR. */
71 void free_register_cache (struct regcache
*regcache
);
73 /* Invalidate cached registers for one thread. */
75 void regcache_invalidate_thread (struct thread_info
*);
77 /* Invalidate cached registers for all threads of the current
80 void regcache_invalidate (void);
82 /* Invalidate and release the register cache of all threads of the
85 void regcache_release (void);
87 /* Convert all registers to a string in the currently specified remote
90 void registers_to_string (struct regcache
*regcache
, char *buf
);
92 /* Convert a string to register values and fill our register cache. */
94 void registers_from_string (struct regcache
*regcache
, char *buf
);
96 /* For regcache_read_pc see common/common-regcache.h. */
98 void regcache_write_pc (struct regcache
*regcache
, CORE_ADDR pc
);
100 /* Return a pointer to the description of register ``n''. */
102 struct reg
*find_register_by_number (const struct target_desc
*tdesc
, int n
);
104 int register_cache_size (const struct target_desc
*tdesc
);
106 int register_size (const struct target_desc
*tdesc
, int n
);
108 int find_regno (const struct target_desc
*tdesc
, const char *name
);
110 void supply_register (struct regcache
*regcache
, int n
, const void *buf
);
112 void supply_register_zeroed (struct regcache
*regcache
, int n
);
114 void supply_register_by_name (struct regcache
*regcache
,
115 const char *name
, const void *buf
);
117 void supply_regblock (struct regcache
*regcache
, const void *buf
);
119 void collect_register (struct regcache
*regcache
, int n
, void *buf
);
121 void collect_register_as_string (struct regcache
*regcache
, int n
, char *buf
);
123 void collect_register_by_name (struct regcache
*regcache
,
124 const char *name
, void *buf
);
126 #endif /* REGCACHE_H */
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