1*aca3beaaSApple OSS Distributions/* 2*aca3beaaSApple OSS Distributions * Copyright (c) 1999-2016 Apple Inc. All rights reserved. 3*aca3beaaSApple OSS Distributions * 4*aca3beaaSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*aca3beaaSApple OSS Distributions * 6*aca3beaaSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*aca3beaaSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*aca3beaaSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*aca3beaaSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*aca3beaaSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*aca3beaaSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*aca3beaaSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*aca3beaaSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*aca3beaaSApple OSS Distributions * 15*aca3beaaSApple OSS Distributions * Please obtain a copy of the License at 16*aca3beaaSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*aca3beaaSApple OSS Distributions * 18*aca3beaaSApple OSS Distributions * The Original Code and all software distributed under the License are 19*aca3beaaSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*aca3beaaSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*aca3beaaSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*aca3beaaSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*aca3beaaSApple OSS Distributions * Please see the License for the specific language governing rights and 24*aca3beaaSApple OSS Distributions * limitations under the License. 25*aca3beaaSApple OSS Distributions * 26*aca3beaaSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*aca3beaaSApple OSS Distributions */ 28*aca3beaaSApple OSS Distributions 29*aca3beaaSApple OSS Distributions#include "SYS.h" 30*aca3beaaSApple OSS Distributions 31*aca3beaaSApple OSS Distributions/* 32*aca3beaaSApple OSS Distributions * A third argument, of type uint64_t*, was added to the gettimeofday syscall 33*aca3beaaSApple OSS Distributions * for use cases that also want to know the mach_absolute_time that matches the 34*aca3beaaSApple OSS Distributions * time value returned. 35*aca3beaaSApple OSS Distributions * 36*aca3beaaSApple OSS Distributions * __gettimeofday takes the traditional two arguments. It will zero out the 37*aca3beaaSApple OSS Distributions * third argument argument before entering the kernel, behaving like the old 38*aca3beaaSApple OSS Distributions * call. 39*aca3beaaSApple OSS Distributions * 40*aca3beaaSApple OSS Distributions * __gettimeofday_with_mach will pass it through and supporting kernels will 41*aca3beaaSApple OSS Distributions * copy-out the mach_absolute_time. Old kernels will leave the pointed to 42*aca3beaaSApple OSS Distributions * value alone. 43*aca3beaaSApple OSS Distributions */ 44*aca3beaaSApple OSS Distributions 45*aca3beaaSApple OSS Distributions.private_extern ___gettimeofday_with_mach 46*aca3beaaSApple OSS Distributions 47*aca3beaaSApple OSS Distributions#if defined(__i386__) 48*aca3beaaSApple OSS Distributions 49*aca3beaaSApple OSS DistributionsLABEL(___gettimeofday) 50*aca3beaaSApple OSS Distributions pushl $0 51*aca3beaaSApple OSS Distributions pushl 12(%esp) 52*aca3beaaSApple OSS Distributions pushl 12(%esp) 53*aca3beaaSApple OSS Distributions calll ___gettimeofday_with_mach 54*aca3beaaSApple OSS Distributions addl $12, %esp 55*aca3beaaSApple OSS Distributions ret 56*aca3beaaSApple OSS Distributions 57*aca3beaaSApple OSS DistributionsLABEL(___gettimeofday_with_mach) 58*aca3beaaSApple OSS Distributions UNIX_SYSCALL_INT_NONAME(gettimeofday,0) 59*aca3beaaSApple OSS Distributions /* 60*aca3beaaSApple OSS Distributions * <rdar://problem/26410029> 61*aca3beaaSApple OSS Distributions * If eax is 0, we're on a new kernel and timeval was written by the kernel. 62*aca3beaaSApple OSS Distributions * Otherwise, eax:edx contains the timeval and we marshal into timeval. 63*aca3beaaSApple OSS Distributions */ 64*aca3beaaSApple OSS Distributions cmp $0, %eax 65*aca3beaaSApple OSS Distributions je 2f 66*aca3beaaSApple OSS Distributions mov 4(%esp),%ecx 67*aca3beaaSApple OSS Distributions mov %eax,(%ecx) 68*aca3beaaSApple OSS Distributions mov %edx,4(%ecx) 69*aca3beaaSApple OSS Distributions xor %eax,%eax 70*aca3beaaSApple OSS Distributions2: 71*aca3beaaSApple OSS Distributions ret 72*aca3beaaSApple OSS Distributions 73*aca3beaaSApple OSS Distributions#elif defined(__x86_64__) 74*aca3beaaSApple OSS Distributions 75*aca3beaaSApple OSS Distributions__SYSCALL(___gettimeofday_with_mach, gettimeofday, 3) 76*aca3beaaSApple OSS Distributions 77*aca3beaaSApple OSS DistributionsLABEL(___gettimeofday) 78*aca3beaaSApple OSS Distributions movq $0x0, %rdx // zero out third argument 79*aca3beaaSApple OSS Distributions 80*aca3beaaSApple OSS Distributions UNIX_SYSCALL_NONAME(gettimeofday,0,cerror_nocancel) 81*aca3beaaSApple OSS Distributions /* 82*aca3beaaSApple OSS Distributions * <rdar://problem/26410029> 83*aca3beaaSApple OSS Distributions * If rax is 0, we're on a new kernel and timeval was written by the kernel. 84*aca3beaaSApple OSS Distributions * Otherwise, rax:rdx contains the timeval and we marshal into timeval. 85*aca3beaaSApple OSS Distributions */ 86*aca3beaaSApple OSS Distributions cmp $0, %rax 87*aca3beaaSApple OSS Distributions je 2f 88*aca3beaaSApple OSS Distributions movq %rax, (%rdi) 89*aca3beaaSApple OSS Distributions movl %edx, 8(%rdi) 90*aca3beaaSApple OSS Distributions xorl %eax, %eax 91*aca3beaaSApple OSS Distributions2: 92*aca3beaaSApple OSS Distributions ret 93*aca3beaaSApple OSS Distributions 94*aca3beaaSApple OSS Distributions#elif defined(__arm__) 95*aca3beaaSApple OSS Distributions 96*aca3beaaSApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 97*aca3beaaSApple OSS Distributions 98*aca3beaaSApple OSS Distributions.text 99*aca3beaaSApple OSS Distributions.align 2 100*aca3beaaSApple OSS Distributions.globl ___gettimeofday 101*aca3beaaSApple OSS Distributions___gettimeofday: 102*aca3beaaSApple OSS Distributions mov r2, #0x0 103*aca3beaaSApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 104*aca3beaaSApple OSS Distributions bx lr 105*aca3beaaSApple OSS Distributions 106*aca3beaaSApple OSS Distributions#elif defined(__arm64__) 107*aca3beaaSApple OSS Distributions 108*aca3beaaSApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 109*aca3beaaSApple OSS Distributions 110*aca3beaaSApple OSS Distributions.text 111*aca3beaaSApple OSS Distributions.align 2 112*aca3beaaSApple OSS Distributions.globl ___gettimeofday 113*aca3beaaSApple OSS Distributions___gettimeofday: 114*aca3beaaSApple OSS Distributions movz x2, #0x0 115*aca3beaaSApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 116*aca3beaaSApple OSS Distributions ret 117*aca3beaaSApple OSS Distributions 118*aca3beaaSApple OSS Distributions#else 119*aca3beaaSApple OSS Distributions#error Unsupported architecture 120*aca3beaaSApple OSS Distributions#endif 121