Finished adding untested bare functionality vfs

Finished adding untested shm syscalls.
Finished adding untested l4 send/recv helpers

Everything compiles. Now going to fix lots of bugs ;-)

tasks/libl4/include/l4lib/arch-arm/syslib.h

@@ -91,14 +91,14 @@ static inline void l4_set_retval(int retval)
 
 /* Clients:
  * Learn result of request.
- */ 
+ */
 static inline int l4_get_retval(void)
 {
 	return read_mr(MR_RETURN);
 }
 
 /* Servers:
- * Return the ipc result back to requesting task. 
+ * Return the ipc result back to requesting task.
  */
 static inline int l4_ipc_return(int retval)
 {
@@ -175,5 +175,4 @@ static inline int l4_reclaim_pages(l4id_t tid)
 	return 0;
 }
 
-
 #endif /* __L4LIB_SYSLIB_H__ */

tasks/libl4/include/l4lib/arch-arm/utcb.h

@@ -22,6 +22,7 @@
 #define MR_UNUSED_START	2	/* The first mr that's not used by syslib.h */
 #define MR_TOTAL	6
 #define MR_UNUSED_TOTAL		(MR_TOTAL - MR_UNUSED_START)
+#define MR_USABLE_TOTAL		MR_UNUSED_TOTAL
 
  /* Compact utcb for now! :-) */
 struct utcb {

tasks/libl4/include/l4lib/ipcdefs.h

@@ -40,4 +40,8 @@
 #define L4_IPC_TAG_CLOSE		16
 #define L4_IPC_TAG_BRK			17
 
+/* Tags for ipc between fs0 and mm0 */
+#define L4_IPC_TAG_OPENDATA		25
+#define L4_IPC_TAG_TASKDATA		26
+
 #endif /* __IPCDEFS_H__ */