Initial commit

include/l4/api/ipc.h

@@ -0,0 +1,29 @@
+#ifndef __IPC_H__
+#define __IPC_H__
+
+
+#define L4_NILTHREAD		-1
+#define L4_ANYTHREAD		-2
+
+#define L4_IPC_TAG_MR_OFFSET		0
+
+
+/* To synchronise two threads */
+#define L4_IPC_TAG_WAIT			0
+
+/* Pagefault */
+#define L4_IPC_TAG_PFAULT		2
+
+#if defined (__KERNEL__) /* These are kernel internal calls */
+/* A helper call for sys_ipc() or internally created ipc paths. */
+int ipc_send(l4id_t tid);
+
+/*
+ * This version sends an extra wait ipc to its receiver so that
+ * the receiver can explicitly make it runnable later by accepting
+ * this wait ipc.
+ */
+int ipc_sendwait(l4id_t tid);
+#endif
+
+#endif /* __IPC_H__ */