cb80eff658f6bcc1923dd59dd1ac6e4f5cefc5a4
[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
29 #include "log.h"
30 #include "command.h"
31
32 #include <string.h>
33 #include <stdlib.h>
34
35 reg_arch_type_t *reg_arch_types = NULL;
36
37 reg_t* register_get_by_name(reg_cache_t *first, char *name, int search_all)
38 {
39 int i;
40 reg_cache_t *cache = first;
41
42 while (cache)
43 {
44 for (i = 0; i < cache->num_regs; i++)
45 {
46 if (strcmp(cache->reg_list[i].name, name) == 0)
47 return &(cache->reg_list[i]);
48 }
49
50 if (search_all)
51 cache = cache->next;
52 else
53 break;
54 }
55
56 return NULL;
57 }
58
59 reg_cache_t** register_get_last_cache_p(reg_cache_t **first)
60 {
61 reg_cache_t **cache_p = first;
62
63 if (*cache_p)
64 while (*cache_p)
65 cache_p = &((*cache_p)->next);
66 else
67 return first;
68
69 return cache_p;
70 }
71
72 int register_reg_arch_type(int (*get)(reg_t *reg), int (*set)(reg_t *reg, u8 *buf))
73 {
74 reg_arch_type_t** arch_type_p = &reg_arch_types;
75 int id = 0;
76
77 if (*arch_type_p)
78 {
79 while (*arch_type_p)
80 {
81 id = (*arch_type_p)->id;
82 arch_type_p = &((*arch_type_p)->next);
83 }
84 }
85
86 (*arch_type_p) = malloc(sizeof(reg_arch_type_t));
87 (*arch_type_p)->id = id + 1;
88 (*arch_type_p)->set = set;
89 (*arch_type_p)->get = get;
90 (*arch_type_p)->next = NULL;
91
92 return id + 1;
93 }
94
95 reg_arch_type_t* register_get_arch_type(int id)
96 {
97 reg_arch_type_t *arch_type = reg_arch_types;
98
99 while (arch_type)
100 {
101 if (arch_type->id == id)
102 return arch_type;
103 arch_type = arch_type->next;
104 }
105 LOG_ERROR("BUG: encountered unregistered arch type 0x%08x", id);
106 exit(-1);
107 return NULL;
108 }
109
110
111
112 static int register_get_dummy_core_reg(reg_t *reg)
113 {
114 return ERROR_OK;
115 }
116
117 static int register_set_dummy_core_reg(reg_t *reg, u8 *buf)
118 {
119 reg->dirty = 1;
120 reg->valid = 1;
121
122 return ERROR_OK;
123 }
124
125 void register_init_dummy(reg_t *reg)
126 {
127 static int dummy_arch_type = -1;
128 if (dummy_arch_type == -1 )
129 register_reg_arch_type(register_get_dummy_core_reg, register_set_dummy_core_reg);
130
131 reg->arch_type = dummy_arch_type;
132 }