17c478bd9Sstevel@tonic-gate/* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57257d1b4Sraf * Common Development and Distribution License (the "License"). 67257d1b4Sraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217257d1b4Sraf 227c478bd9Sstevel@tonic-gate/* 237257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 27*9a70fc3bSMark J. Nelson .file "gettimeofday.s" 287c478bd9Sstevel@tonic-gate 297257d1b4Sraf#include "SYS.h" 307c478bd9Sstevel@tonic-gate 317c478bd9Sstevel@tonic-gate ANSI_PRAGMA_WEAK(gettimeofday,function) 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate/ 347c478bd9Sstevel@tonic-gate/ implements int gettimeofday(struct timeval *tp, void *tzp) 357c478bd9Sstevel@tonic-gate/ 367c478bd9Sstevel@tonic-gate/ note that tzp is always ignored 377c478bd9Sstevel@tonic-gate/ 387c478bd9Sstevel@tonic-gate 397257d1b4Sraf ENTRY(gettimeofday) 407c478bd9Sstevel@tonic-gate/ 417c478bd9Sstevel@tonic-gate/ use long long gethrestime() 427c478bd9Sstevel@tonic-gate/ 437c478bd9Sstevel@tonic-gate SYSFASTTRAP(GETHRESTIME) 447c478bd9Sstevel@tonic-gate/ 457c478bd9Sstevel@tonic-gate/ gethrestime trap returns seconds in %eax, nsecs in %edx 467c478bd9Sstevel@tonic-gate/ need to convert nsecs to usecs & store into area pointed 477c478bd9Sstevel@tonic-gate/ to by struct timeval * argument. 487c478bd9Sstevel@tonic-gate/ 497c478bd9Sstevel@tonic-gate movl 4(%esp), %ecx / put ptr to timeval in %ecx 507c478bd9Sstevel@tonic-gate jecxz 1f / bail if we get a null pointer 517c478bd9Sstevel@tonic-gate movl %eax, (%ecx) / store seconds into timeval ptr 527c478bd9Sstevel@tonic-gate movl $274877907, %eax / divide by 1000 as impl. by gcc 537c478bd9Sstevel@tonic-gate imull %edx / See Hacker's Delight pg 162 547c478bd9Sstevel@tonic-gate sarl $6, %edx / simplified by 0 <= nsec <= 1e9 557c478bd9Sstevel@tonic-gate movl %edx, 4(%ecx) / store usecs into timeval ptr + 4. 567c478bd9Sstevel@tonic-gate1: 577c478bd9Sstevel@tonic-gate RETC / return 0 587257d1b4Sraf SET_SIZE(gettimeofday) 597c478bd9Sstevel@tonic-gate 607c478bd9Sstevel@tonic-gate 61