- fixed target->type->poll() return value

- added arch_state to show status of currently selected target
- simplified target->type->arch_state() api.
- clean up telnet output a bit
- fixed GDB output for arch_state
- removed a couple of unecessary exit()'s
- cleaned up error propagation a bit in a few places

git-svn-id: svn://svn.berlios.de/openocd/trunk@332 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/target/target.h

@@ -98,9 +98,10 @@ typedef struct target_type_s
 	char *name;
 
 	/* poll current target status */
-	enum target_state (*poll)(struct target_s *target);
-	/* architecture specific status reply */
-	int (*arch_state)(struct target_s *target, char *buf, int buf_size);
+	int (*poll)(struct target_s *target);
+	/* Invoked only from target_arch_state().
+	 * Issue USER() w/architecture specific status.  */
+	int (*arch_state)(struct target_s *target);
 
 	/* target request support */
 	int (*target_request_data)(struct target_s *target, u32 size, u8 *buffer);