add const keyword to some APIs
[openocd.git] / src / target / register.c
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2007,2008 √ėyvind Harboe *
6 * oyvind.harboe@zylin.com *
7 * *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
12 * *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
17 * *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif
26
27 #include "register.h"
28 #include "log.h"
29
30
31 reg_arch_type_t *reg_arch_types = NULL;
32
33 reg_t* register_get_by_name(reg_cache_t *first,
34 const char *name, bool search_all)
35 {
36 int i;
37 reg_cache_t *cache = first;
38
39 while (cache)
40 {
41 for (i = 0; i < cache->num_regs; i++)
42 {
43 if (strcmp(cache->reg_list[i].name, name) == 0)
44 return &(cache->reg_list[i]);
45 }
46
47 if (search_all)
48 cache = cache->next;
49 else
50 break;
51 }
52
53 return NULL;
54 }
55
56 reg_cache_t** register_get_last_cache_p(reg_cache_t **first)
57 {
58 reg_cache_t **cache_p = first;
59
60 if (*cache_p)
61 while (*cache_p)
62 cache_p = &((*cache_p)->next);
63 else
64 return first;
65
66 return cache_p;
67 }
68
69 int register_reg_arch_type(int (*get)(reg_t *reg), int (*set)(reg_t *reg, uint8_t *buf))
70 {
71 reg_arch_type_t** arch_type_p = &reg_arch_types;
72 int id = 0;
73
74 if (*arch_type_p)
75 {
76 while (*arch_type_p)
77 {
78 id = (*arch_type_p)->id;
79 arch_type_p = &((*arch_type_p)->next);
80 }
81 }
82
83 (*arch_type_p) = malloc(sizeof(reg_arch_type_t));
84 (*arch_type_p)->id = id + 1;
85 (*arch_type_p)->set = set;
86 (*arch_type_p)->get = get;
87 (*arch_type_p)->next = NULL;
88
89 return id + 1;
90 }
91
92 reg_arch_type_t* register_get_arch_type(int id)
93 {
94 reg_arch_type_t *arch_type = reg_arch_types;
95
96 while (arch_type)
97 {
98 if (arch_type->id == id)
99 return arch_type;
100 arch_type = arch_type->next;
101 }
102 LOG_ERROR("BUG: encountered unregistered arch type 0x%08x", id);
103 exit(-1);
104 return NULL;
105 }
106
107 static int register_get_dummy_core_reg(reg_t *reg)
108 {
109 return ERROR_OK;
110 }
111
112 static int register_set_dummy_core_reg(reg_t *reg, uint8_t *buf)
113 {
114 reg->dirty = 1;
115 reg->valid = 1;
116
117 return ERROR_OK;
118 }
119
120 void register_init_dummy(reg_t *reg)
121 {
122 static int dummy_arch_type = -1;
123 if (dummy_arch_type == -1)
124 dummy_arch_type = register_reg_arch_type(register_get_dummy_core_reg, register_set_dummy_core_reg);
125
126 reg->arch_type = dummy_arch_type;
127 }