1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
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. *
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. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
20 ***************************************************************************/
27 #include <helper/log.h>
31 * Holds utilities to work with register caches.
33 * OpenOCD uses machine registers internally, and exposes them by name
34 * to Tcl scripts. Sets of related registers are grouped into caches.
35 * For example, a CPU core will expose a set of registers, and there
36 * may be separate registers associated with debug or trace modules.
39 struct reg *register_get_by_number(struct reg_cache *first,
40 uint32_t reg_num, bool search_all)
42 struct reg_cache *cache = first;
45 for (unsigned int i = 0; i < cache->num_regs; i++) {
46 if (!cache->reg_list[i].exist)
48 if (cache->reg_list[i].number == reg_num)
49 return &(cache->reg_list[i]);
61 struct reg *register_get_by_name(struct reg_cache *first,
62 const char *name, bool search_all)
64 struct reg_cache *cache = first;
67 for (unsigned int i = 0; i < cache->num_regs; i++) {
68 if (!cache->reg_list[i].exist)
70 if (strcmp(cache->reg_list[i].name, name) == 0)
71 return &(cache->reg_list[i]);
83 struct reg_cache **register_get_last_cache_p(struct reg_cache **first)
85 struct reg_cache **cache_p = first;
89 cache_p = &((*cache_p)->next);
96 void register_unlink_cache(struct reg_cache **cache_p, const struct reg_cache *cache)
98 while (*cache_p && *cache_p != cache)
99 cache_p = &((*cache_p)->next);
101 *cache_p = cache->next;
104 /** Marks the contents of the register cache as invalid (and clean). */
105 void register_cache_invalidate(struct reg_cache *cache)
107 struct reg *reg = cache->reg_list;
109 for (unsigned int n = cache->num_regs; n != 0; n--, reg++) {
117 static int register_get_dummy_core_reg(struct reg *reg)
122 static int register_set_dummy_core_reg(struct reg *reg, uint8_t *buf)
130 static const struct reg_arch_type dummy_type = {
131 .get = register_get_dummy_core_reg,
132 .set = register_set_dummy_core_reg,
135 void register_init_dummy(struct reg *reg)
137 reg->type = &dummy_type;