xnu-7195.101.1.tar.gz

[apple/xnu.git] / libsyscall / wrappers / mach_approximate_time.c

diff --git a/libsyscall/wrappers/mach_approximate_time.c b/libsyscall/wrappers/mach_approximate_time.c
index 1e0a4e4727bbb52bdabda207506fad49ed9ca462..50fc667b9f20fa466e171d9812462c855b58b979 100644 (file)
--- a/libsyscall/wrappers/mach_approximate_time.c
+++ b/libsyscall/wrappers/mach_approximate_time.c
@@ -2,14 +2,14 @@
  * Copyright (c) 2008 Apple Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
- * 
+ *
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * compliance with the License. Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this
  * file.
- * 
+ *
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -17,7 +17,7 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
- * 
+ *
  * @APPLE_LICENSE_HEADER_END@
  */
 #include <sys/types.h>
@@ -27,12 +27,12 @@ extern uint64_t mach_absolute_time(void);
 
 #if defined(__arm64__) || defined(__x86_64__)
 
-uint64_t mach_approximate_time(void) {
-       uint8_t supported = *((uint8_t *)_COMM_PAGE_APPROX_TIME_SUPPORTED);
-        if (supported)
-        {
-            return *((uint64_t *)_COMM_PAGE_APPROX_TIME);
-        }
+uint64_t
+mach_approximate_time(void)
+{
+       if (COMM_PAGE_READ(uint8_t, APPROX_TIME_SUPPORTED)) {
+               return COMM_PAGE_READ(uint64_t, APPROX_TIME);
+       }
        return mach_absolute_time();
 }