usr/src/lib/libc/amd64/sys/__clock_gettime_sys.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  * Copyright 2016 Joyent, Inc.
  25  */
  26
  27         .file   "__clock_gettime_sys.s"
  28
  29 #include <sys/asm_linkage.h>
  30 #include <sys/time_impl.h>
  31 #include "SYS.h"
  32
  33
  34 /*
  35  * int
  36  * __clock_gettime_sys(clockid_t clock_id, timespec_t *tp)
  37  */
  38
  39         ENTRY(__clock_gettime_sys)
  40         cmpl    $__CLOCK_REALTIME0, %edi        /* if (clock_id) */
  41         je      2f                              /* equals __CLOCK_REALTIME0 */
  42         cmpl    $CLOCK_REALTIME, %edi           /* or if (clock_id) */
  43         jne     1f                              /* equals CLOCK_REALTIME */
  44 2:
  45         pushq   %rsi                            /* preserve timespec_t ptr */
  46         SYSFASTTRAP(GETHRESTIME)
  47         popq    %rsi
  48         movq    %rax, (%rsi)
  49         movq    %rdx, 8(%rsi)
  50         RETC
  51 1:
  52         SYSTRAP_RVAL1(clock_gettime)
  53         SYSCERROR
  54         RETC
  55         SET_SIZE(__clock_gettime_sys)