register: support non-existent registers

[openocd] / src / target / register.c

diff --git a/src/target/register.c b/src/target/register.c
index 65dc24f07ede8dfaabdfcdd48b37ff5a8578497c..850641448b637a276ced58748f5e504871ac4168 100644 (file)
--- a/src/target/register.c
+++ b/src/target/register.c
@@ -16,16 +16,13 @@
  *   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.             *
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  ***************************************************************************/
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#include <helper/types.h>
 #include "register.h"
 #include <helper/log.h>
 
@@ -47,6 +44,8 @@ struct reg *register_get_by_name(struct reg_cache *first,
 
        while (cache) {
                for (i = 0; i < cache->num_regs; i++) {
+                       if (cache->reg_list[i].exist == false)
+                               continue;
                        if (strcmp(cache->reg_list[i].name, name) == 0)
                                return &(cache->reg_list[i]);
                }
@@ -73,12 +72,22 @@ struct reg_cache **register_get_last_cache_p(struct reg_cache **first)
        return cache_p;
 }
 
+void register_unlink_cache(struct reg_cache **cache_p, const struct reg_cache *cache)
+{
+       while (*cache_p && *cache_p != cache)
+               cache_p = &((*cache_p)->next);
+       if (*cache_p)
+               *cache_p = cache->next;
+}
+
 /** Marks the contents of the register cache as invalid (and clean). */
 void register_cache_invalidate(struct reg_cache *cache)
 {
        struct reg *reg = cache->reg_list;
 
        for (unsigned n = cache->num_regs; n != 0; n--, reg++) {
+               if (reg->exist == false)
+                       continue;
                reg->valid = 0;
                reg->dirty = 0;
        }