Added kernel + libl4 changes for full and extended ipc.

- Short ipc working as normal. Full/extended ipc haven't been tested.
- Added automated compilation and inclusion of test executable in test0.

tasks/test0/src/exectest.c

@@ -11,14 +11,14 @@
 #include <string.h>
 #include <errno.h>
 
-extern char _start_test1[];
-extern char _end_test1[];
+extern char _start_test_exec[];
+extern char _end_test_exec[];
 
 int exectest(void)
 {
 	int fd;
-	void *exec_start = (void *)_start_test1;
-	unsigned long size = _end_test1 - _start_test1;
+	void *exec_start = (void *)_start_test_exec;
+	unsigned long size = _end_test_exec - _start_test_exec;
 	int left, cnt;
 	char *argv[5];
 	char filename[128];

tasks/test0/src/test_exec/container.c

@@ -0,0 +1,25 @@
+/*
+ * Container entry point for this task.
+ *
+ * Copyright (C) 2007-2009 Bahadir Bilgehan Balban
+ */
+
+#include <l4lib/types.h>
+#include <l4lib/init.h>
+#include <l4lib/utcb.h>
+#include <posix_init.h>		/* Initialisers for posix library */
+
+void main(void);
+
+void __container_init(void)
+{
+	/* Generic L4 thread initialisation */
+	__l4_init();
+
+	/* Initialise posix library for application */
+	libposix_init();
+
+	/* Entry to main */
+	main();
+}
+

tasks/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", getpid());
+		printf("\n(Thread %d): Continues to sync with the pager...\n", getpid());
+		while (1)
+			wait_pager(0);
+	}
+	_exit(0);
+}
+