usr/src/lib/libc/common/sys/gethrtime.s

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26         .file   "gethrtime.s"
  27
  28 #include "SYS.h"
  29
  30 /*
  31  * hrtime_t gethrtime(void)
  32  *
  33  * Returns the current hi-res real time.
  34  */
  35
  36         ENTRY(gethrtime)
  37         SYSFASTTRAP(GETHRTIME)
  38 #if defined(__sparcv9)
  39         /*
  40          * Note that the fast trap actually assumes V8 parameter passing
  41          * conventions, so we have to reassemble a 64-bit value here.
  42          */
  43         sllx    %o0, 32, %o0
  44         or      %o1, %o0, %o0
  45 #endif
  46         RET
  47         SET_SIZE(gethrtime)
  48
  49 /*
  50  * hrtime_t gethrvtime(void)
  51  *
  52  * Returns the current hi-res LWP virtual time.
  53  */
  54
  55         ENTRY(gethrvtime)
  56         SYSFASTTRAP(GETHRVTIME)
  57 #if defined(__sparcv9)
  58         /*
  59          * Note that the fast trap actually assumes V8 parameter passing
  60          * conventions, so we have to reassemble a 64-bit value here.
  61          */
  62         sllx    %o0, 32, %o0
  63         or      %o1, %o0, %o0
  64 #endif
  65         RET
  66         SET_SIZE(gethrvtime)