From 620e1babfe8ffd749d43b16aaafd006bd128734c Mon Sep 17 00:00:00 2001
From: Stefan Lankes <slankes@eonerc.rwth-aachen.de>
Date: Fri, 16 Oct 2015 07:07:59 +0200
Subject: [PATCH] add system call to deliver the current system tick

---
 hermit/include/hermit/syscall.h | 1 +
 hermit/kernel/syscall.c         | 8 +++++++-
 hermit/usr/pte                  | 2 +-
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/hermit/include/hermit/syscall.h b/hermit/include/hermit/syscall.h
index 4a620cb62..9717efa4b 100644
--- a/hermit/include/hermit/syscall.h
+++ b/hermit/include/hermit/syscall.h
@@ -85,6 +85,7 @@ extern "C" {
 #define __NR_setprio		40
 #define __NR_clone		41
 #define __NR_sem_cancelablewait	42
+#define __NR_get_ticks		43
 
 #ifdef __cplusplus
 }
diff --git a/hermit/kernel/syscall.c b/hermit/kernel/syscall.c
index 2ea15103e..91811c221 100644
--- a/hermit/kernel/syscall.c
+++ b/hermit/kernel/syscall.c
@@ -384,6 +384,11 @@ static off_t sys_lseek(int fd, off_t offset, int whence)
 	return off;
 }
 
+static size_t sys_get_ticks(void)
+{
+	return get_clock_tick();
+}
+
 static int default_handler(void)
 {
 #if 0
@@ -440,5 +445,6 @@ size_t syscall_table[] = {
 	(size_t) sys_getprio,		/* __NR_getprio	*/
 	(size_t) default_handler,	/* __NR_setprio	*/
 	(size_t) sys_clone,		/* __NR_clone	*/
-	(size_t) sys_sem_timedwait	/*  __NR_sem_cancelablewait	*/
+	(size_t) sys_sem_timedwait,	/* __NR_sem_cancelablewait	*/
+	(size_t) sys_get_ticks		/* __NR_get_ticks	*/
 };
diff --git a/hermit/usr/pte b/hermit/usr/pte
index 2aff438d7..53835aebf 160000
--- a/hermit/usr/pte
+++ b/hermit/usr/pte
@@ -1 +1 @@
-Subproject commit 2aff438d76d11c2d8e9efc274d639f8e0fef455b
+Subproject commit 53835aebf4adb9b9582a3fa0665d5340568208c8