/* one or more argument, access a single register (write if second argument is given */
        if (argc >= 1)
        {
-               int address = strtoul(args[0], NULL, 0);
+               int address;
+               COMMAND_PARSE_NUMBER(int, args[0], address);
 
                if (argc == 1)
                {
                }
                else if (argc == 2)
                {
-                       uint32_t value = strtoul(args[1], NULL, 0);
+                       uint32_t value;
+                       COMMAND_PARSE_NUMBER(u32, args[1], value);
                        if ((retval = arm920t_write_cp15_physical(target, address, value)) != ERROR_OK)
                        {
                                command_print(cmd_ctx, "couldn't access reg %i", address);
        /* one or more argument, access a single register (write if second argument is given */
        if (argc >= 1)
        {
-               uint32_t opcode = strtoul(args[0], NULL, 0);
+               uint32_t opcode;
+               COMMAND_PARSE_NUMBER(u32, args[0], opcode);
 
                if (argc == 1)
                {
                }
                else if (argc == 2)
                {
-                       uint32_t value = strtoul(args[1], NULL, 0);
+                       uint32_t value;
+                       COMMAND_PARSE_NUMBER(u32, args[1], value);
                        if ((retval = arm920t_write_cp15_interpreted(target, opcode, value, 0)) != ERROR_OK)
                        {
                                command_print(cmd_ctx, "couldn't execute %8.8" PRIx32 "", opcode);
                }
                else if (argc == 3)
                {
-                       uint32_t value = strtoul(args[1], NULL, 0);
-                       uint32_t address = strtoul(args[2], NULL, 0);
+                       uint32_t value;
+                       COMMAND_PARSE_NUMBER(u32, args[1], value);
+                       uint32_t address;
+                       COMMAND_PARSE_NUMBER(u32, args[2], address);
                        if ((retval = arm920t_write_cp15_interpreted(target, opcode, value, address)) != ERROR_OK)
                        {
                                command_print(cmd_ctx, "couldn't execute %8.8" PRIx32 "", opcode);