usr/src/lib/libc/sparc/sys/__clock_gettime.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   "__clock_gettime.s"
  27
  28 #include <sys/time_impl.h>
  29 #include "SYS.h"
  30
  31 /*
  32  * int
  33  * __clock_gettime(clockid_t clock_id, timespec_t *tp)
  34  */
  35
  36         ENTRY(__clock_gettime)
  37         cmp     %o0, __CLOCK_REALTIME0          ! if (clock_id)
  38         beq     2f                              ! equal to __CLOCK_REALTIME0
  39         cmp     %o0, CLOCK_REALTIME             ! or
  40         bne     1f                              ! equal to CLOCK_REALTIME
  41         .empty                                  ! optimize for CLOCK_REALTIME
  42 2:
  43         mov     %o1, %o5
  44         SYSFASTTRAP(GETHRESTIME)
  45         stn     %o0, [%o5]
  46         stn     %o1, [%o5 + CLONGSIZE]
  47         RETC
  48 1:
  49         SYSTRAP_RVAL1(clock_gettime)
  50         SYSCERROR
  51         RETC
  52         SET_SIZE(__clock_gettime)