1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
/* Register support routines for the remote server for GDB.
Copyright (C) 2001-2022 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef GDBSERVER_REGCACHE_H
#define GDBSERVER_REGCACHE_H
#include "gdbsupport/common-regcache.h"
struct thread_info;
struct target_desc;
/* The data for the register cache. Note that we have one per
inferior; this is primarily for simplicity, as the performance
benefit is minimal. */
struct regcache : public reg_buffer_common
{
/* The regcache's target description. */
const struct target_desc *tdesc = nullptr;
/* Whether the REGISTERS buffer's contents are valid. If false, we
haven't fetched the registers from the target yet. Not that this
register cache is _not_ pass-through, unlike GDB's. Note that
"valid" here is unrelated to whether the registers are available
in a traceframe. For that, check REGISTER_STATUS below. */
int registers_valid = 0;
int registers_owned = 0;
unsigned char *registers = nullptr;
#ifndef IN_PROCESS_AGENT
/* One of REG_UNAVAILABLE or REG_VALID. */
unsigned char *register_status = nullptr;
#endif
/* See gdbsupport/common-regcache.h. */
enum register_status get_register_status (int regnum) const override;
/* See gdbsupport/common-regcache.h. */
void raw_supply (int regnum, const void *buf) override;
/* See gdbsupport/common-regcache.h. */
void raw_collect (int regnum, void *buf) const override;
/* See gdbsupport/common-regcache.h. */
bool raw_compare (int regnum, const void *buf, int offset) const override;
};
struct regcache *init_register_cache (struct regcache *regcache,
const struct target_desc *tdesc,
unsigned char *regbuf);
void regcache_cpy (struct regcache *dst, struct regcache *src);
/* Create a new register cache for INFERIOR. */
struct regcache *new_register_cache (const struct target_desc *tdesc);
struct regcache *get_thread_regcache (struct thread_info *thread, int fetch);
/* Release all memory associated with the register cache for INFERIOR. */
void free_register_cache (struct regcache *regcache);
/* Invalidate cached registers for one thread. */
void regcache_invalidate_thread (struct thread_info *);
/* Invalidate cached registers for all threads of the given process. */
void regcache_invalidate_pid (int pid);
/* Invalidate cached registers for all threads of the current
process. */
void regcache_invalidate (void);
/* Invalidate and release the register cache of all threads of the
current process. */
void regcache_release (void);
/* Convert all registers to a string in the currently specified remote
format. */
void registers_to_string (struct regcache *regcache, char *buf);
/* Convert a string to register values and fill our register cache. */
void registers_from_string (struct regcache *regcache, char *buf);
/* For regcache_read_pc see gdbsupport/common-regcache.h. */
void regcache_write_pc (struct regcache *regcache, CORE_ADDR pc);
int register_cache_size (const struct target_desc *tdesc);
int register_size (const struct target_desc *tdesc, int n);
/* No throw version of find_regno. If NAME is not a known register, return
an empty value. */
gdb::optional<int> find_regno_no_throw (const struct target_desc *tdesc,
const char *name);
int find_regno (const struct target_desc *tdesc, const char *name);
void supply_register (struct regcache *regcache, int n, const void *buf);
void supply_register_zeroed (struct regcache *regcache, int n);
void supply_register_by_name (struct regcache *regcache,
const char *name, const void *buf);
void supply_register_by_name_zeroed (struct regcache *regcache,
const char *name);
void supply_regblock (struct regcache *regcache, const void *buf);
void collect_register (struct regcache *regcache, int n, void *buf);
void collect_register_as_string (struct regcache *regcache, int n, char *buf);
void collect_register_by_name (struct regcache *regcache,
const char *name, void *buf);
/* Read a raw register as an unsigned integer. Convenience wrapper
around regcache_raw_get_unsigned that takes a register name instead
of a register number. */
ULONGEST regcache_raw_get_unsigned_by_name (struct regcache *regcache,
const char *name);
#endif /* GDBSERVER_REGCACHE_H */
|
