+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
- * 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 2 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, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
+ * oyvind.harboe@zylin.com *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "register.h"
+#include <helper/log.h>
+
+/**
+ * @file
+ * Holds utilities to work with register caches.
+ *
+ * OpenOCD uses machine registers internally, and exposes them by name
+ * to Tcl scripts. Sets of related registers are grouped into caches.
+ * For example, a CPU core will expose a set of registers, and there
+ * may be separate registers associated with debug or trace modules.
+ */
+
+struct reg *register_get_by_number(struct reg_cache *first,
+ uint32_t reg_num, bool search_all)
+{
+ struct reg_cache *cache = first;
+
+ while (cache) {
+ for (unsigned int i = 0; i < cache->num_regs; i++) {
+ if (!cache->reg_list[i].exist)
+ continue;
+ if (cache->reg_list[i].number == reg_num)
+ return &(cache->reg_list[i]);
+ }
-#include "log.h"
-#include "command.h"
+ if (!search_all)
+ break;
-#include <string.h>
-#include <stdlib.h>
+ cache = cache->next;
+ }
-reg_arch_type_t *reg_arch_types = NULL;
+ return NULL;
+}
-reg_t* register_get_by_name(reg_cache_t *first, char *name, int search_all)
+struct reg *register_get_by_name(struct reg_cache *first,
+ const char *name, bool search_all)
{
- int i;
- reg_cache_t *cache = first;
-
- while (cache)
- {
- for (i = 0; i < cache->num_regs; i++)
- {
+ struct reg_cache *cache = first;
+
+ while (cache) {
+ for (unsigned int i = 0; i < cache->num_regs; i++) {
+ if (!cache->reg_list[i].exist)
+ continue;
if (strcmp(cache->reg_list[i].name, name) == 0)
return &(cache->reg_list[i]);
}
-
- if (search_all)
- cache = cache->next;
- else
+
+ if (!search_all)
break;
+
+ cache = cache->next;
}
-
+
return NULL;
}
-reg_cache_t** register_get_last_cache_p(reg_cache_t **first)
+struct reg_cache **register_get_last_cache_p(struct reg_cache **first)
{
- reg_cache_t **cache_p = first;
-
+ struct reg_cache **cache_p = first;
+
if (*cache_p)
while (*cache_p)
cache_p = &((*cache_p)->next);
else
return first;
-
+
return cache_p;
}
-int register_reg_arch_type(int (*get)(reg_t *reg), int (*set)(reg_t *reg, u32 value))
+void register_unlink_cache(struct reg_cache **cache_p, const struct reg_cache *cache)
{
- reg_arch_type_t** arch_type_p = ®_arch_types;
- int id = 0;
-
- if (*arch_type_p)
- {
- while (*arch_type_p)
- {
- id = (*arch_type_p)->id;
- arch_type_p = &((*arch_type_p)->next);
- }
- }
-
- (*arch_type_p) = malloc(sizeof(reg_arch_type_t));
- (*arch_type_p)->id = id + 1;
- (*arch_type_p)->set = set;
- (*arch_type_p)->get = get;
- (*arch_type_p)->next = NULL;
-
- return id + 1;
+ while (*cache_p && *cache_p != cache)
+ cache_p = &((*cache_p)->next);
+ if (*cache_p)
+ *cache_p = cache->next;
}
-reg_arch_type_t* register_get_arch_type(int id)
+/** Marks the contents of the register cache as invalid (and clean). */
+void register_cache_invalidate(struct reg_cache *cache)
{
- reg_arch_type_t *arch_type = reg_arch_types;
-
- while (arch_type)
- {
- if (arch_type->id == id)
- return arch_type;
- arch_type = arch_type->next;
+ struct reg *reg = cache->reg_list;
+
+ for (unsigned int n = cache->num_regs; n != 0; n--, reg++) {
+ if (!reg->exist)
+ continue;
+ reg->valid = false;
+ reg->dirty = false;
}
-
- return NULL;
+}
+
+static int register_get_dummy_core_reg(struct reg *reg)
+{
+ return ERROR_OK;
+}
+
+static int register_set_dummy_core_reg(struct reg *reg, uint8_t *buf)
+{
+ reg->dirty = true;
+ reg->valid = true;
+
+ return ERROR_OK;
+}
+
+static const struct reg_arch_type dummy_type = {
+ .get = register_get_dummy_core_reg,
+ .set = register_set_dummy_core_reg,
+};
+
+void register_init_dummy(struct reg *reg)
+{
+ reg->type = &dummy_type;
}
projects / fw / openocd / blobdiff