/* * Copyright (c) 1999-2016 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_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. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * 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, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * 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_OSREFERENCE_LICENSE_HEADER_END@ */ #include "SYS.h" /* * A third argument, of type uint64_t*, was added to the gettimeofday syscall * for use cases that also want to know the mach_absolute_time that matches the * time value returned. * * __gettimeofday takes the traditional two arguments. It will zero out the * third argument argument before entering the kernel, behaving like the old * call. * * __gettimeofday_with_mach will pass it through and supporting kernels will * copy-out the mach_absolute_time. Old kernels will leave the pointed to * value alone. */ .private_extern ___gettimeofday_with_mach #if defined(__i386__) LABEL(___gettimeofday) pushl $0 pushl 12(%esp) pushl 12(%esp) calll ___gettimeofday_with_mach addl $12, %esp ret LABEL(___gettimeofday_with_mach) UNIX_SYSCALL_INT_NONAME(gettimeofday,0) /* * <rdar://problem/26410029> * If eax is 0, we're on a new kernel and timeval was written by the kernel. * Otherwise, eax:edx contains the timeval and we marshal into timeval. */ cmp $0, %eax je 2f mov 4(%esp),%ecx mov %eax,(%ecx) mov %edx,4(%ecx) xor %eax,%eax 2: ret #elif defined(__x86_64__) __SYSCALL(___gettimeofday_with_mach, gettimeofday, 3) LABEL(___gettimeofday) movq $0x0, %rdx // zero out third argument UNIX_SYSCALL_NONAME(gettimeofday,0,cerror_nocancel) /* * <rdar://problem/26410029> * If rax is 0, we're on a new kernel and timeval was written by the kernel. * Otherwise, rax:rdx contains the timeval and we marshal into timeval. */ cmp $0, %rax je 2f movq %rax, (%rdi) movl %edx, 8(%rdi) xorl %eax, %eax 2: ret #else #error Unsupported architecture #endif