Added posix code

conts/posix/test0/src/test_exec/test_exec.c

@@ -0,0 +1,36 @@
+/*
+ * Some tests for posix syscalls.
+ *
+ * Copyright (C) 2007 Bahadir Balban
+ */
+#include <stdio.h>
+#include <string.h>
+#include <l4lib/arch/syslib.h>
+#include <l4lib/kip.h>
+#include <l4lib/utcb.h>
+#include <l4lib/ipcdefs.h>
+#include <tests.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+void wait_pager(l4id_t partner)
+{
+	// printf("%s: Syncing with pager.\n", __TASKNAME__);
+	for (int i = 0; i < 6; i++)
+		write_mr(i, i);
+	l4_send(partner, L4_IPC_TAG_SYNC);
+	// printf("Pager synced with us.\n");
+}
+
+void main(void)
+{
+	wait_pager(0);
+	if (getpid() == 2) {
+		printf("EXECVE TEST         -- PASSED --\n");
+		printf("\nThread (%d): Continues to sync with the pager...\n\n", getpid());
+		while (1)
+			wait_pager(0);
+	}
+	_exit(0);
+}
+