register: support non-existent registers

[openocd.git] / src / target / register.c

diff --git a/src/target/register.c b/src/target/register.c
index 1c1717c8ff3b39342c12f5ba3e1f7f82546371eb..850641448b637a276ced58748f5e504871ac4168 100644 (file)
--- a/src/target/register.c
+++ b/src/target/register.c
@@ -16,9 +16,7 @@
  *   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.,                                       *
- *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  ***************************************************************************/
 
 #ifdef HAVE_CONFIG_H
@@ -46,6 +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]);
                }
@@ -86,6 +86,8 @@ 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;
        }