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361c8ade GB |
1 | /* Cache and manage the values of registers |
2 | ||
61baf725 | 3 | Copyright (C) 2014-2017 Free Software Foundation, Inc. |
361c8ade GB |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #ifndef COMMON_REGCACHE_H | |
21 | #define COMMON_REGCACHE_H | |
22 | ||
23 | /* This header is a stopgap until we have an independent regcache. */ | |
24 | ||
68ce2059 AT |
25 | enum register_status |
26 | { | |
27 | /* The register value is not in the cache, and we don't know yet | |
28 | whether it's available in the target (or traceframe). */ | |
29 | REG_UNKNOWN = 0, | |
30 | ||
31 | /* The register value is valid and cached. */ | |
32 | REG_VALID = 1, | |
33 | ||
34 | /* The register value is unavailable. E.g., we're inspecting a | |
35 | traceframe, and this register wasn't collected. Note that this | |
36 | is different a different "unavailable" from saying the register | |
37 | does not exist in the target's architecture --- in that case, | |
38 | the target should have given us a target description that does | |
39 | not include the register in the first place. */ | |
40 | REG_UNAVAILABLE = -1 | |
41 | }; | |
42 | ||
361c8ade GB |
43 | /* Return a pointer to the register cache associated with the |
44 | thread specified by PTID. This function must be provided by | |
45 | the client. */ | |
46 | ||
47 | extern struct regcache *get_thread_regcache_for_ptid (ptid_t ptid); | |
48 | ||
8d689ee5 YQ |
49 | /* Return the size of register numbered N in REGCACHE. This function |
50 | must be provided by the client. */ | |
51 | ||
52 | extern int regcache_register_size (const struct regcache *regcache, int n); | |
53 | ||
361c8ade GB |
54 | /* Read the PC register. This function must be provided by the |
55 | client. */ | |
56 | ||
57 | extern CORE_ADDR regcache_read_pc (struct regcache *regcache); | |
58 | ||
68ce2059 AT |
59 | /* Read a raw register into a unsigned integer. */ |
60 | extern enum register_status regcache_raw_read_unsigned | |
61 | (struct regcache *regcache, int regnum, ULONGEST *val); | |
62 | ||
63 | ULONGEST regcache_raw_get_unsigned (struct regcache *regcache, int regnum); | |
64 | ||
361c8ade | 65 | #endif /* COMMON_REGCACHE_H */ |