Changeset 631ca4d in mainline for generic/src/syscall/syscall.c

Timestamp:

2006-03-13T20:51:35Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

5c089c3a

Parents:

25d7709

Message:

New synchronous ipc.
Widened syscall to support up to 5 parameters.

File:

• generic/src/syscall/syscall.c (modified) (2 diffs)

generic/src/syscall/syscall.c

@@ -56 +56 @@
 }
 
-/** Send a call over syscall
+/** Send a call over IPC, wait for reply, return to user
  *
  * @return Call identification, returns -1 on fatal error, 
            -2 on 'Too many async request, handle answers first
  */
-static __native sys_ipc_call(__native phoneid, __native arg1, __native arg2)
+static __native sys_ipc_call_sync(__native phoneid, __native arg1, 
+                                   __native arg2, __native *respdata)
+{
+        call_t *call;
+        phone_t *phone;
+        /* Special answerbox for synchronous messages */
+
+        if (phoneid >= IPC_MAX_PHONES)
+                return -ENOENT;
+
+        phone = &TASK->phones[phoneid];
+        if (!phone->callee)
+                return -ENOENT;
+
+        call = ipc_call_alloc();
+        call->data[0] = arg1;
+        call->data[1] = arg2;
+        
+        ipc_call_sync(phone, call);
+
+        copy_to_uspace(respdata, &call->data, sizeof(__native) * IPC_CALL_LEN);
+
+        return 0;
+}
+
+/** Send an asynchronous call over ipc
+ *
+ * @return Call identification, returns -1 on fatal error, 
+           -2 on 'Too many async request, handle answers first
+ */
+static __native sys_ipc_call_async(__native phoneid, __native arg1, 
+                                   __native arg2)
 {
         call_t *call;
@@ -125 +156 @@
         sys_ctl,
         sys_io,
-        sys_ipc_call,
+        sys_ipc_call_sync,
+        sys_ipc_call_async,
         sys_ipc_answer,
         sys_ipc_wait_for_call