WebSVN – HelenOS – Diff – /trunk/uspace/lib/libc/generic/ipc.c

 static atomic_t ipc_futex = FUTEX_INITIALIZER;
 /** Make a fast synchronous call.
+ *
- * Only one payload argument can be passed using this function. However, this
+ * Only three payload arguments can be passed using this function. However, this
- * function is faster than the generic ipc_call_sync_3().
+ * function is faster than the generic ipc_call_sync_slow() because the payload
+ * is passed directly in registers.
+ *
  * @param phoneid   Phone handle for the call.
  * @param method    Requested method.
  * @param arg1      Service-defined payload argument.
+ * @param arg2      Service-defined payload argument.
+ * @param arg3      Service-defined payload argument.
- * @param result    If non-NULL, the return ARG1 will be stored there.
+ * @param result1   If non-NULL, the return ARG1 will be stored there.
+ * @param result2   If non-NULL, the return ARG2 will be stored there.
+ * @param result3   If non-NULL, the return ARG3 will be stored there.
+ * @param result4   If non-NULL, the return ARG4 will be stored there.
+ * @param result5   If non-NULL, the return ARG5 will be stored there.
+ *
  * @return      Negative values represent errors returned by IPC.
  *          Otherwise the RETVAL of the answer is returned.
  */
+int
-int ipc_call_sync(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t *result)
+ipc_call_sync_fast(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2,
+    ipcarg_t arg3, ipcarg_t *result1, ipcarg_t *result2, ipcarg_t *result3,
+    ipcarg_t *result4, ipcarg_t *result5)
+{
     ipc_call_t resdata;
     int callres;
-    callres = __SYSCALL4(SYS_IPC_CALL_SYNC_FAST, phoneid, method, arg1,
+    callres = __SYSCALL6(SYS_IPC_CALL_SYNC_FAST, phoneid, method, arg1,
-        (sysarg_t) &resdata);
+        arg2, arg3, (sysarg_t) &resdata);
     if (callres)
         return callres;
-    if (result)
+    if (result1)
-        *result = IPC_GET_ARG1(resdata);
+        *result1 = IPC_GET_ARG1(resdata);
+    if (result2)
+        *result2 = IPC_GET_ARG2(resdata);
+    if (result3)
+        *result3 = IPC_GET_ARG3(resdata);
+    if (result4)
+        *result4 = IPC_GET_ARG4(resdata);
+    if (result5)
+        *result5 = IPC_GET_ARG5(resdata);
     return IPC_GET_RETVAL(resdata);
+}
-/** Make a synchronous call transmitting 3 arguments of payload.
+/** Make a synchronous call transmitting 5 arguments of payload.
+ *
  * @param phoneid   Phone handle for the call.
  * @param method    Requested method.
  * @param arg1      Service-defined payload argument.
  * @param arg2      Service-defined payload argument.
  * @param arg3      Service-defined payload argument.
+ * @param arg4      Service-defined payload argument.
+ * @param arg5      Service-defined payload argument.
  * @param result1   If non-NULL, storage for the first return argument.
  * @param result2   If non-NULL, storage for the second return argument.
  * @param result3   If non-NULL, storage for the third return argument.
+ * @param result4   If non-NULL, storage for the fourth return argument.
+ * @param result5   If non-NULL, storage for the fifth return argument.
+ *
  * @return      Negative value means IPC error.
  *          Otherwise the RETVAL of the answer.
  */
+int
-int ipc_call_sync_3(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2,
+ipc_call_sync_slow(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2,
+    ipcarg_t arg3, ipcarg_t arg4, ipcarg_t arg5, ipcarg_t *result1,
-    ipcarg_t arg3, ipcarg_t *result1, ipcarg_t *result2, ipcarg_t *result3)
+    ipcarg_t *result2, ipcarg_t *result3, ipcarg_t *result4, ipcarg_t *result5)
+{
     ipc_call_t data;
     int callres;
     IPC_SET_METHOD(data, method);
     IPC_SET_ARG1(data, arg1);
     IPC_SET_ARG2(data, arg2);
     IPC_SET_ARG3(data, arg3);
+    IPC_SET_ARG4(data, arg4);
+    IPC_SET_ARG5(data, arg5);
-    callres = __SYSCALL3(SYS_IPC_CALL_SYNC, phoneid, (sysarg_t) &data,
+    callres = __SYSCALL3(SYS_IPC_CALL_SYNC_SLOW, phoneid, (sysarg_t) &data,
         (sysarg_t) &data);
     if (callres)
         return callres;
     if (result1)
         *result1 = IPC_GET_ARG1(data);
     if (result2)
         *result2 = IPC_GET_ARG2(data);
     if (result3)
         *result3 = IPC_GET_ARG3(data);
+    if (result4)
+        *result4 = IPC_GET_ARG4(data);
+    if (result5)
+        *result5 = IPC_GET_ARG5(data);
     return IPC_GET_RETVAL(data);
+}
 /** Syscall to send asynchronous message.
+ *
+ *
  * @return      Zero on success or a negative error code.
  */
 int ipc_connect_to_me(int phoneid, int arg1, int arg2, ipcarg_t *phonehash)
+{
-    return ipc_call_sync_3(phoneid, IPC_M_CONNECT_TO_ME, arg1, arg2, 0, 0,
+    return ipc_call_sync_2_3(phoneid, IPC_M_CONNECT_TO_ME, arg1, arg2,
-, phonehash);
+        NULL, NULL, phonehash);
+}
 /** Ask through phone for a new connection to some service.
+ *
  * @param phoneid   Phone handle used for contacting the other side.
 int ipc_connect_me_to(int phoneid, int arg1, int arg2)
+{
     ipcarg_t newphid;
     int res;
-    res = ipc_call_sync_3(phoneid, IPC_M_CONNECT_ME_TO, arg1, arg2, 0, 0, 0,
+    res = ipc_call_sync_2_3(phoneid, IPC_M_CONNECT_ME_TO, arg1, arg2, NULL,
-        &newphid);
+        NULL, &newphid);
     if (res)
         return res;
     return newphid;
+}
+ *
  * @return      Zero on success or a negative error code from errno.h.
  */
 int ipc_data_send(int phoneid, void *src, size_t size)
+{
-    return ipc_call_sync_3(phoneid, IPC_M_DATA_SEND, 0, (ipcarg_t) src,
+    return ipc_call_sync_3_0(phoneid, IPC_M_DATA_SEND, 0, (ipcarg_t) src,
-        (ipcarg_t) size, NULL, NULL, NULL);
+        (ipcarg_t) size);
+}
 /** Wrapper for receiving the IPC_M_DATA_SEND calls.
+ *
  * This wrapper only makes it more comfortable to receive IPC_M_DATA_SEND calls

Subversion Repositories HelenOS

(root)/trunk/uspace/lib/libc/generic/ipc.c – Rev 2568 → 2615