1*0f4c859eSApple OSS Distributions/* 2*0f4c859eSApple OSS Distributions * Copyright (c) 1999-2016 Apple Inc. All rights reserved. 3*0f4c859eSApple OSS Distributions * 4*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*0f4c859eSApple OSS Distributions * 6*0f4c859eSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*0f4c859eSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*0f4c859eSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*0f4c859eSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*0f4c859eSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*0f4c859eSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*0f4c859eSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*0f4c859eSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*0f4c859eSApple OSS Distributions * 15*0f4c859eSApple OSS Distributions * Please obtain a copy of the License at 16*0f4c859eSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*0f4c859eSApple OSS Distributions * 18*0f4c859eSApple OSS Distributions * The Original Code and all software distributed under the License are 19*0f4c859eSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*0f4c859eSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*0f4c859eSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*0f4c859eSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*0f4c859eSApple OSS Distributions * Please see the License for the specific language governing rights and 24*0f4c859eSApple OSS Distributions * limitations under the License. 25*0f4c859eSApple OSS Distributions * 26*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*0f4c859eSApple OSS Distributions */ 28*0f4c859eSApple OSS Distributions 29*0f4c859eSApple OSS Distributions#include "SYS.h" 30*0f4c859eSApple OSS Distributions 31*0f4c859eSApple OSS Distributions/* 32*0f4c859eSApple OSS Distributions * A third argument, of type uint64_t*, was added to the gettimeofday syscall 33*0f4c859eSApple OSS Distributions * for use cases that also want to know the mach_absolute_time that matches the 34*0f4c859eSApple OSS Distributions * time value returned. 35*0f4c859eSApple OSS Distributions * 36*0f4c859eSApple OSS Distributions * __gettimeofday takes the traditional two arguments. It will zero out the 37*0f4c859eSApple OSS Distributions * third argument argument before entering the kernel, behaving like the old 38*0f4c859eSApple OSS Distributions * call. 39*0f4c859eSApple OSS Distributions * 40*0f4c859eSApple OSS Distributions * __gettimeofday_with_mach will pass it through and supporting kernels will 41*0f4c859eSApple OSS Distributions * copy-out the mach_absolute_time. Old kernels will leave the pointed to 42*0f4c859eSApple OSS Distributions * value alone. 43*0f4c859eSApple OSS Distributions */ 44*0f4c859eSApple OSS Distributions 45*0f4c859eSApple OSS Distributions.private_extern ___gettimeofday_with_mach 46*0f4c859eSApple OSS Distributions 47*0f4c859eSApple OSS Distributions#if defined(__i386__) 48*0f4c859eSApple OSS Distributions 49*0f4c859eSApple OSS DistributionsLABEL(___gettimeofday) 50*0f4c859eSApple OSS Distributions pushl $0 51*0f4c859eSApple OSS Distributions pushl 12(%esp) 52*0f4c859eSApple OSS Distributions pushl 12(%esp) 53*0f4c859eSApple OSS Distributions calll ___gettimeofday_with_mach 54*0f4c859eSApple OSS Distributions addl $12, %esp 55*0f4c859eSApple OSS Distributions ret 56*0f4c859eSApple OSS Distributions 57*0f4c859eSApple OSS DistributionsLABEL(___gettimeofday_with_mach) 58*0f4c859eSApple OSS Distributions UNIX_SYSCALL_INT_NONAME(gettimeofday,0) 59*0f4c859eSApple OSS Distributions /* 60*0f4c859eSApple OSS Distributions * <rdar://problem/26410029> 61*0f4c859eSApple OSS Distributions * If eax is 0, we're on a new kernel and timeval was written by the kernel. 62*0f4c859eSApple OSS Distributions * Otherwise, eax:edx contains the timeval and we marshal into timeval. 63*0f4c859eSApple OSS Distributions */ 64*0f4c859eSApple OSS Distributions cmp $0, %eax 65*0f4c859eSApple OSS Distributions je 2f 66*0f4c859eSApple OSS Distributions mov 4(%esp),%ecx 67*0f4c859eSApple OSS Distributions mov %eax,(%ecx) 68*0f4c859eSApple OSS Distributions mov %edx,4(%ecx) 69*0f4c859eSApple OSS Distributions xor %eax,%eax 70*0f4c859eSApple OSS Distributions2: 71*0f4c859eSApple OSS Distributions ret 72*0f4c859eSApple OSS Distributions 73*0f4c859eSApple OSS Distributions#elif defined(__x86_64__) 74*0f4c859eSApple OSS Distributions 75*0f4c859eSApple OSS Distributions__SYSCALL(___gettimeofday_with_mach, gettimeofday, 3) 76*0f4c859eSApple OSS Distributions 77*0f4c859eSApple OSS DistributionsLABEL(___gettimeofday) 78*0f4c859eSApple OSS Distributions movq $0x0, %rdx // zero out third argument 79*0f4c859eSApple OSS Distributions 80*0f4c859eSApple OSS Distributions UNIX_SYSCALL_NONAME(gettimeofday,0,cerror_nocancel) 81*0f4c859eSApple OSS Distributions /* 82*0f4c859eSApple OSS Distributions * <rdar://problem/26410029> 83*0f4c859eSApple OSS Distributions * If rax is 0, we're on a new kernel and timeval was written by the kernel. 84*0f4c859eSApple OSS Distributions * Otherwise, rax:rdx contains the timeval and we marshal into timeval. 85*0f4c859eSApple OSS Distributions */ 86*0f4c859eSApple OSS Distributions cmp $0, %rax 87*0f4c859eSApple OSS Distributions je 2f 88*0f4c859eSApple OSS Distributions movq %rax, (%rdi) 89*0f4c859eSApple OSS Distributions movl %edx, 8(%rdi) 90*0f4c859eSApple OSS Distributions xorl %eax, %eax 91*0f4c859eSApple OSS Distributions2: 92*0f4c859eSApple OSS Distributions ret 93*0f4c859eSApple OSS Distributions 94*0f4c859eSApple OSS Distributions#elif defined(__arm__) 95*0f4c859eSApple OSS Distributions 96*0f4c859eSApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 97*0f4c859eSApple OSS Distributions 98*0f4c859eSApple OSS Distributions.text 99*0f4c859eSApple OSS Distributions.align 2 100*0f4c859eSApple OSS Distributions.globl ___gettimeofday 101*0f4c859eSApple OSS Distributions___gettimeofday: 102*0f4c859eSApple OSS Distributions mov r2, #0x0 103*0f4c859eSApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 104*0f4c859eSApple OSS Distributions bx lr 105*0f4c859eSApple OSS Distributions 106*0f4c859eSApple OSS Distributions#elif defined(__arm64__) 107*0f4c859eSApple OSS Distributions 108*0f4c859eSApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 109*0f4c859eSApple OSS Distributions 110*0f4c859eSApple OSS Distributions.text 111*0f4c859eSApple OSS Distributions.align 2 112*0f4c859eSApple OSS Distributions.globl ___gettimeofday 113*0f4c859eSApple OSS Distributions___gettimeofday: 114*0f4c859eSApple OSS Distributions movz x2, #0x0 115*0f4c859eSApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 116*0f4c859eSApple OSS Distributions ret 117*0f4c859eSApple OSS Distributions 118*0f4c859eSApple OSS Distributions#else 119*0f4c859eSApple OSS Distributions#error Unsupported architecture 120*0f4c859eSApple OSS Distributions#endif 121