restructure app output

kernel/syscall/skeleton.cc

@@ -224,13 +224,22 @@ bool send(Vault& v, int pid, const void* sbuffer, size_t ssize, void* rbuffer, s
 		}
 		DBG_VERBOSE << "" << endl;
 	}
+    uint8_t num_pages = (rsize/4096)+1;
 
-	// Kopiere Antwort
-	if (!copy_from_phys(v, isMapped(msg.ptr, target_thread->paging_tree->l4), rbuffer, rsize)) {
-		return false;
-	}
-
-	return true;
+  // Kopiere Antwort                                  size  kann mehr sein 
+  for(uint8_t i=0;i<num_pages;i++){
+    uintptr_t paddr = isMapped(msg.ptr, target_thread->paging_tree->l4); //always page aligned
+    if(rsize-i*4096>4096){                                                               // ganze pages
+      if (!copy_from_phys(v,paddr,(void*)((uintptr_t) rbuffer+ (4096*i)),4096)) {
+        return false;
+      }
+    } else {                                                          //teil von pages
+      if (!copy_from_phys(v,paddr,(void*)((uintptr_t)rbuffer+ 4096*i), rsize-i*4096)) {
+        return false;
+      }
+    }
+  }
+  return true;
 }
 
 int receive(Vault& v, void* buffer, size_t size) {
@@ -254,9 +263,9 @@ int receive(Vault& v, void* buffer, size_t size) {
         uintptr_t offset = i==0?Page::offset(ipc->ptr):0; //apply offset only on first page
         uintptr_t paddr = isMapped((ipc->ptr)+(i*4096), v.thread_list[ipc->pid]->paging_tree->l4);
         if(total_len - (i*4096) > 4096)
-            copy_from_phys(v, paddr+offset, buffer, 4096-offset);
+            copy_from_phys(v, paddr+offset,(void*)((uintptr_t)buffer+i*4096), 4096-offset);
         else
-            copy_from_phys(v, paddr, buffer, total_len - (i*4096)); //last page
+            copy_from_phys(v, paddr, (void*)((uintptr_t)buffer+i*4096), total_len - (i*4096)); //last page
     }
 	
 	return ipc->pid;
@@ -282,7 +291,7 @@ bool reply(Vault& v, const void* buffer, size_t size) {
   ipc->is_answer = true;
 
   // Sender aufwecken
-  other_thread->ipc_sem.v(v);
+    other_thread->ipc_sem.v(v);
 
   return true;
 }

user/app2/appl.cc

@@ -8,7 +8,9 @@ void main() {
     fork();
     int ppid = sys_getpid();
     int other = fork();
-    //write(1, "app", 3, 0, ppid);
+
+    int pid = sys_getpid();
+    write(1, "app", 3, 0, pid);
     if (ppid == other) { // child
         sbuf[0] = 3;
         sbuf[8192] = sys_getpid();
@@ -18,12 +20,14 @@ void main() {
         char msg[] = "REPLY: AA\n";
         msg[7] += rbuf[0] + sbuf[8193];
         msg[8] += 4 + ppid;
-        write(0, msg, 10,0, ppid);
+        write(0, msg, 10, 20, pid);
     } else { // parent
+      //  int X = recv(rbuf, 8193);
         receive(rbuf, 8193);
         rbuf[0] = rbuf[0] + rbuf[8192];
         rbuf[8193] = 7;
-        reply(rbuf, 8193);
+     //   reply(X,rbuf, 8193);
+      reply(rbuf,8193);
     }
  
     sys_exit();