1*043036a2SApple OSS Distributions/* 2*043036a2SApple OSS Distributions * Copyright (c) 1999-2016 Apple Inc. All rights reserved. 3*043036a2SApple OSS Distributions * 4*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*043036a2SApple OSS Distributions * 6*043036a2SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*043036a2SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*043036a2SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*043036a2SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*043036a2SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*043036a2SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*043036a2SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*043036a2SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*043036a2SApple OSS Distributions * 15*043036a2SApple OSS Distributions * Please obtain a copy of the License at 16*043036a2SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*043036a2SApple OSS Distributions * 18*043036a2SApple OSS Distributions * The Original Code and all software distributed under the License are 19*043036a2SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*043036a2SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*043036a2SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*043036a2SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*043036a2SApple OSS Distributions * Please see the License for the specific language governing rights and 24*043036a2SApple OSS Distributions * limitations under the License. 25*043036a2SApple OSS Distributions * 26*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*043036a2SApple OSS Distributions */ 28*043036a2SApple OSS Distributions 29*043036a2SApple OSS Distributions#include "SYS.h" 30*043036a2SApple OSS Distributions 31*043036a2SApple OSS Distributions/* 32*043036a2SApple OSS Distributions * A third argument, of type uint64_t*, was added to the gettimeofday syscall 33*043036a2SApple OSS Distributions * for use cases that also want to know the mach_absolute_time that matches the 34*043036a2SApple OSS Distributions * time value returned. 35*043036a2SApple OSS Distributions * 36*043036a2SApple OSS Distributions * __gettimeofday takes the traditional two arguments. It will zero out the 37*043036a2SApple OSS Distributions * third argument argument before entering the kernel, behaving like the old 38*043036a2SApple OSS Distributions * call. 39*043036a2SApple OSS Distributions * 40*043036a2SApple OSS Distributions * __gettimeofday_with_mach will pass it through and supporting kernels will 41*043036a2SApple OSS Distributions * copy-out the mach_absolute_time. Old kernels will leave the pointed to 42*043036a2SApple OSS Distributions * value alone. 43*043036a2SApple OSS Distributions */ 44*043036a2SApple OSS Distributions 45*043036a2SApple OSS Distributions.private_extern ___gettimeofday_with_mach 46*043036a2SApple OSS Distributions 47*043036a2SApple OSS Distributions#if defined(__i386__) 48*043036a2SApple OSS Distributions 49*043036a2SApple OSS DistributionsLABEL(___gettimeofday) 50*043036a2SApple OSS Distributions pushl $0 51*043036a2SApple OSS Distributions pushl 12(%esp) 52*043036a2SApple OSS Distributions pushl 12(%esp) 53*043036a2SApple OSS Distributions calll ___gettimeofday_with_mach 54*043036a2SApple OSS Distributions addl $12, %esp 55*043036a2SApple OSS Distributions ret 56*043036a2SApple OSS Distributions 57*043036a2SApple OSS DistributionsLABEL(___gettimeofday_with_mach) 58*043036a2SApple OSS Distributions UNIX_SYSCALL_INT_NONAME(gettimeofday,0) 59*043036a2SApple OSS Distributions /* 60*043036a2SApple OSS Distributions * <rdar://problem/26410029> 61*043036a2SApple OSS Distributions * If eax is 0, we're on a new kernel and timeval was written by the kernel. 62*043036a2SApple OSS Distributions * Otherwise, eax:edx contains the timeval and we marshal into timeval. 63*043036a2SApple OSS Distributions */ 64*043036a2SApple OSS Distributions cmp $0, %eax 65*043036a2SApple OSS Distributions je 2f 66*043036a2SApple OSS Distributions mov 4(%esp),%ecx 67*043036a2SApple OSS Distributions mov %eax,(%ecx) 68*043036a2SApple OSS Distributions mov %edx,4(%ecx) 69*043036a2SApple OSS Distributions xor %eax,%eax 70*043036a2SApple OSS Distributions2: 71*043036a2SApple OSS Distributions ret 72*043036a2SApple OSS Distributions 73*043036a2SApple OSS Distributions#elif defined(__x86_64__) 74*043036a2SApple OSS Distributions 75*043036a2SApple OSS Distributions__SYSCALL(___gettimeofday_with_mach, gettimeofday, 3) 76*043036a2SApple OSS Distributions 77*043036a2SApple OSS DistributionsLABEL(___gettimeofday) 78*043036a2SApple OSS Distributions movq $0x0, %rdx // zero out third argument 79*043036a2SApple OSS Distributions 80*043036a2SApple OSS Distributions UNIX_SYSCALL_NONAME(gettimeofday,0,cerror_nocancel) 81*043036a2SApple OSS Distributions /* 82*043036a2SApple OSS Distributions * <rdar://problem/26410029> 83*043036a2SApple OSS Distributions * If rax is 0, we're on a new kernel and timeval was written by the kernel. 84*043036a2SApple OSS Distributions * Otherwise, rax:rdx contains the timeval and we marshal into timeval. 85*043036a2SApple OSS Distributions */ 86*043036a2SApple OSS Distributions cmp $0, %rax 87*043036a2SApple OSS Distributions je 2f 88*043036a2SApple OSS Distributions movq %rax, (%rdi) 89*043036a2SApple OSS Distributions movl %edx, 8(%rdi) 90*043036a2SApple OSS Distributions xorl %eax, %eax 91*043036a2SApple OSS Distributions2: 92*043036a2SApple OSS Distributions ret 93*043036a2SApple OSS Distributions 94*043036a2SApple OSS Distributions#elif defined(__arm__) 95*043036a2SApple OSS Distributions 96*043036a2SApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 97*043036a2SApple OSS Distributions 98*043036a2SApple OSS Distributions.text 99*043036a2SApple OSS Distributions.align 2 100*043036a2SApple OSS Distributions.globl ___gettimeofday 101*043036a2SApple OSS Distributions___gettimeofday: 102*043036a2SApple OSS Distributions mov r2, #0x0 103*043036a2SApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 104*043036a2SApple OSS Distributions bx lr 105*043036a2SApple OSS Distributions 106*043036a2SApple OSS Distributions#elif defined(__arm64__) 107*043036a2SApple OSS Distributions 108*043036a2SApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 109*043036a2SApple OSS Distributions 110*043036a2SApple OSS Distributions.text 111*043036a2SApple OSS Distributions.align 2 112*043036a2SApple OSS Distributions.globl ___gettimeofday 113*043036a2SApple OSS Distributions___gettimeofday: 114*043036a2SApple OSS Distributions movz x2, #0x0 115*043036a2SApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 116*043036a2SApple OSS Distributions ret 117*043036a2SApple OSS Distributions 118*043036a2SApple OSS Distributions#else 119*043036a2SApple OSS Distributions#error Unsupported architecture 120*043036a2SApple OSS Distributions#endif 121