1*8d741a5dSApple OSS Distributions/* 2*8d741a5dSApple OSS Distributions * Copyright (c) 1999-2016 Apple Inc. All rights reserved. 3*8d741a5dSApple OSS Distributions * 4*8d741a5dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*8d741a5dSApple OSS Distributions * 6*8d741a5dSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*8d741a5dSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*8d741a5dSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*8d741a5dSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*8d741a5dSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*8d741a5dSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*8d741a5dSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*8d741a5dSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*8d741a5dSApple OSS Distributions * 15*8d741a5dSApple OSS Distributions * Please obtain a copy of the License at 16*8d741a5dSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*8d741a5dSApple OSS Distributions * 18*8d741a5dSApple OSS Distributions * The Original Code and all software distributed under the License are 19*8d741a5dSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*8d741a5dSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*8d741a5dSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*8d741a5dSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*8d741a5dSApple OSS Distributions * Please see the License for the specific language governing rights and 24*8d741a5dSApple OSS Distributions * limitations under the License. 25*8d741a5dSApple OSS Distributions * 26*8d741a5dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*8d741a5dSApple OSS Distributions */ 28*8d741a5dSApple OSS Distributions 29*8d741a5dSApple OSS Distributions#include "SYS.h" 30*8d741a5dSApple OSS Distributions 31*8d741a5dSApple OSS Distributions/* 32*8d741a5dSApple OSS Distributions * A third argument, of type uint64_t*, was added to the gettimeofday syscall 33*8d741a5dSApple OSS Distributions * for use cases that also want to know the mach_absolute_time that matches the 34*8d741a5dSApple OSS Distributions * time value returned. 35*8d741a5dSApple OSS Distributions * 36*8d741a5dSApple OSS Distributions * __gettimeofday takes the traditional two arguments. It will zero out the 37*8d741a5dSApple OSS Distributions * third argument argument before entering the kernel, behaving like the old 38*8d741a5dSApple OSS Distributions * call. 39*8d741a5dSApple OSS Distributions * 40*8d741a5dSApple OSS Distributions * __gettimeofday_with_mach will pass it through and supporting kernels will 41*8d741a5dSApple OSS Distributions * copy-out the mach_absolute_time. Old kernels will leave the pointed to 42*8d741a5dSApple OSS Distributions * value alone. 43*8d741a5dSApple OSS Distributions */ 44*8d741a5dSApple OSS Distributions 45*8d741a5dSApple OSS Distributions.private_extern ___gettimeofday_with_mach 46*8d741a5dSApple OSS Distributions 47*8d741a5dSApple OSS Distributions#if defined(__i386__) 48*8d741a5dSApple OSS Distributions 49*8d741a5dSApple OSS DistributionsLABEL(___gettimeofday) 50*8d741a5dSApple OSS Distributions pushl $0 51*8d741a5dSApple OSS Distributions pushl 12(%esp) 52*8d741a5dSApple OSS Distributions pushl 12(%esp) 53*8d741a5dSApple OSS Distributions calll ___gettimeofday_with_mach 54*8d741a5dSApple OSS Distributions addl $12, %esp 55*8d741a5dSApple OSS Distributions ret 56*8d741a5dSApple OSS Distributions 57*8d741a5dSApple OSS DistributionsLABEL(___gettimeofday_with_mach) 58*8d741a5dSApple OSS Distributions UNIX_SYSCALL_INT_NONAME(gettimeofday,0) 59*8d741a5dSApple OSS Distributions /* 60*8d741a5dSApple OSS Distributions * <rdar://problem/26410029> 61*8d741a5dSApple OSS Distributions * If eax is 0, we're on a new kernel and timeval was written by the kernel. 62*8d741a5dSApple OSS Distributions * Otherwise, eax:edx contains the timeval and we marshal into timeval. 63*8d741a5dSApple OSS Distributions */ 64*8d741a5dSApple OSS Distributions cmp $0, %eax 65*8d741a5dSApple OSS Distributions je 2f 66*8d741a5dSApple OSS Distributions mov 4(%esp),%ecx 67*8d741a5dSApple OSS Distributions mov %eax,(%ecx) 68*8d741a5dSApple OSS Distributions mov %edx,4(%ecx) 69*8d741a5dSApple OSS Distributions xor %eax,%eax 70*8d741a5dSApple OSS Distributions2: 71*8d741a5dSApple OSS Distributions ret 72*8d741a5dSApple OSS Distributions 73*8d741a5dSApple OSS Distributions#elif defined(__x86_64__) 74*8d741a5dSApple OSS Distributions 75*8d741a5dSApple OSS Distributions__SYSCALL(___gettimeofday_with_mach, gettimeofday, 3) 76*8d741a5dSApple OSS Distributions 77*8d741a5dSApple OSS DistributionsLABEL(___gettimeofday) 78*8d741a5dSApple OSS Distributions movq $0x0, %rdx // zero out third argument 79*8d741a5dSApple OSS Distributions 80*8d741a5dSApple OSS Distributions UNIX_SYSCALL_NONAME(gettimeofday,0,cerror_nocancel) 81*8d741a5dSApple OSS Distributions /* 82*8d741a5dSApple OSS Distributions * <rdar://problem/26410029> 83*8d741a5dSApple OSS Distributions * If rax is 0, we're on a new kernel and timeval was written by the kernel. 84*8d741a5dSApple OSS Distributions * Otherwise, rax:rdx contains the timeval and we marshal into timeval. 85*8d741a5dSApple OSS Distributions */ 86*8d741a5dSApple OSS Distributions cmp $0, %rax 87*8d741a5dSApple OSS Distributions je 2f 88*8d741a5dSApple OSS Distributions movq %rax, (%rdi) 89*8d741a5dSApple OSS Distributions movl %edx, 8(%rdi) 90*8d741a5dSApple OSS Distributions xorl %eax, %eax 91*8d741a5dSApple OSS Distributions2: 92*8d741a5dSApple OSS Distributions ret 93*8d741a5dSApple OSS Distributions 94*8d741a5dSApple OSS Distributions#elif defined(__arm__) 95*8d741a5dSApple OSS Distributions 96*8d741a5dSApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 97*8d741a5dSApple OSS Distributions 98*8d741a5dSApple OSS Distributions.text 99*8d741a5dSApple OSS Distributions.align 2 100*8d741a5dSApple OSS Distributions.globl ___gettimeofday 101*8d741a5dSApple OSS Distributions___gettimeofday: 102*8d741a5dSApple OSS Distributions mov r2, #0x0 103*8d741a5dSApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 104*8d741a5dSApple OSS Distributions bx lr 105*8d741a5dSApple OSS Distributions 106*8d741a5dSApple OSS Distributions#elif defined(__arm64__) 107*8d741a5dSApple OSS Distributions 108*8d741a5dSApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 109*8d741a5dSApple OSS Distributions 110*8d741a5dSApple OSS Distributions.text 111*8d741a5dSApple OSS Distributions.align 2 112*8d741a5dSApple OSS Distributions.globl ___gettimeofday 113*8d741a5dSApple OSS Distributions___gettimeofday: 114*8d741a5dSApple OSS Distributions movz x2, #0x0 115*8d741a5dSApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 116*8d741a5dSApple OSS Distributions ret 117*8d741a5dSApple OSS Distributions 118*8d741a5dSApple OSS Distributions#else 119*8d741a5dSApple OSS Distributions#error Unsupported architecture 120*8d741a5dSApple OSS Distributions#endif 121