--- a/kernel/syscall.c3	Sun Nov 24 11:24:15 2013 +0100
+++ b/kernel/syscall.c3	Wed Nov 27 08:06:42 2013 +0100
@@ -1,9 +1,60 @@
 module syscall;
 
+/*
+    This module handles all the system calls from user space.
+*/
+
+enum {
+    SendMsg = 1,
+    ReceiveMsg = 2,
+
+} syscall_t;
 
 // System call handlers. System calls are made from user space.
+func void handle_system_call(int callId, int a, int b, int c, int d)
+{
+    // Main entry, check what to do here
+    switch(callId)
+    {
+        case SendMsg:
+            handle_send_msg();
+            proc = process.byId(a);
+            if (not proc)
+            {
+                panic();
+            }
 
-func void handle_system_call()
-{
+            proc.setMessage();
+            scheduler.current.setState(Sleep);
+            break;
+        case ReceiveMsg:
+            break;
+        case Reboot:
+            arch.reboot();
+            break;
+        default:
+            return NO_SUCH_CALL;
+    }
+
+    return OK;
 }
 
+// Handle send message syscall
+func void handle_send_msg()
+{
+    p = process.byId(msg.to_id);
+    scheduler.attempt(p);
+}
+
+func handle_recv_msg()
+{
+    // Block until we have a message
+    currentProc->setState(Sleep);
+    scheduler.executeNext();
+}
+
+func handle_reboot()
+{
+    reboot();
+}
+