1*d4514f0bSApple OSS Distributions/* 2*d4514f0bSApple OSS Distributions * Copyright (c) 1999-2016 Apple Inc. All rights reserved. 3*d4514f0bSApple OSS Distributions * 4*d4514f0bSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*d4514f0bSApple OSS Distributions * 6*d4514f0bSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*d4514f0bSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*d4514f0bSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*d4514f0bSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*d4514f0bSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*d4514f0bSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*d4514f0bSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*d4514f0bSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*d4514f0bSApple OSS Distributions * 15*d4514f0bSApple OSS Distributions * Please obtain a copy of the License at 16*d4514f0bSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*d4514f0bSApple OSS Distributions * 18*d4514f0bSApple OSS Distributions * The Original Code and all software distributed under the License are 19*d4514f0bSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*d4514f0bSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*d4514f0bSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*d4514f0bSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*d4514f0bSApple OSS Distributions * Please see the License for the specific language governing rights and 24*d4514f0bSApple OSS Distributions * limitations under the License. 25*d4514f0bSApple OSS Distributions * 26*d4514f0bSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*d4514f0bSApple OSS Distributions */ 28*d4514f0bSApple OSS Distributions 29*d4514f0bSApple OSS Distributions#include "SYS.h" 30*d4514f0bSApple OSS Distributions 31*d4514f0bSApple OSS Distributions/* 32*d4514f0bSApple OSS Distributions * A third argument, of type uint64_t*, was added to the gettimeofday syscall 33*d4514f0bSApple OSS Distributions * for use cases that also want to know the mach_absolute_time that matches the 34*d4514f0bSApple OSS Distributions * time value returned. 35*d4514f0bSApple OSS Distributions * 36*d4514f0bSApple OSS Distributions * __gettimeofday takes the traditional two arguments. It will zero out the 37*d4514f0bSApple OSS Distributions * third argument argument before entering the kernel, behaving like the old 38*d4514f0bSApple OSS Distributions * call. 39*d4514f0bSApple OSS Distributions * 40*d4514f0bSApple OSS Distributions * __gettimeofday_with_mach will pass it through and supporting kernels will 41*d4514f0bSApple OSS Distributions * copy-out the mach_absolute_time. Old kernels will leave the pointed to 42*d4514f0bSApple OSS Distributions * value alone. 43*d4514f0bSApple OSS Distributions */ 44*d4514f0bSApple OSS Distributions 45*d4514f0bSApple OSS Distributions.private_extern ___gettimeofday_with_mach 46*d4514f0bSApple OSS Distributions 47*d4514f0bSApple OSS Distributions#if defined(__i386__) 48*d4514f0bSApple OSS Distributions 49*d4514f0bSApple OSS DistributionsLABEL(___gettimeofday) 50*d4514f0bSApple OSS Distributions pushl $0 51*d4514f0bSApple OSS Distributions pushl 12(%esp) 52*d4514f0bSApple OSS Distributions pushl 12(%esp) 53*d4514f0bSApple OSS Distributions calll ___gettimeofday_with_mach 54*d4514f0bSApple OSS Distributions addl $12, %esp 55*d4514f0bSApple OSS Distributions ret 56*d4514f0bSApple OSS Distributions 57*d4514f0bSApple OSS DistributionsLABEL(___gettimeofday_with_mach) 58*d4514f0bSApple OSS Distributions UNIX_SYSCALL_INT_NONAME(gettimeofday,0) 59*d4514f0bSApple OSS Distributions /* 60*d4514f0bSApple OSS Distributions * <rdar://problem/26410029> 61*d4514f0bSApple OSS Distributions * If eax is 0, we're on a new kernel and timeval was written by the kernel. 62*d4514f0bSApple OSS Distributions * Otherwise, eax:edx contains the timeval and we marshal into timeval. 63*d4514f0bSApple OSS Distributions */ 64*d4514f0bSApple OSS Distributions cmp $0, %eax 65*d4514f0bSApple OSS Distributions je 2f 66*d4514f0bSApple OSS Distributions mov 4(%esp),%ecx 67*d4514f0bSApple OSS Distributions mov %eax,(%ecx) 68*d4514f0bSApple OSS Distributions mov %edx,4(%ecx) 69*d4514f0bSApple OSS Distributions xor %eax,%eax 70*d4514f0bSApple OSS Distributions2: 71*d4514f0bSApple OSS Distributions ret 72*d4514f0bSApple OSS Distributions 73*d4514f0bSApple OSS Distributions#elif defined(__x86_64__) 74*d4514f0bSApple OSS Distributions 75*d4514f0bSApple OSS Distributions__SYSCALL(___gettimeofday_with_mach, gettimeofday, 3) 76*d4514f0bSApple OSS Distributions 77*d4514f0bSApple OSS DistributionsLABEL(___gettimeofday) 78*d4514f0bSApple OSS Distributions movq $0x0, %rdx // zero out third argument 79*d4514f0bSApple OSS Distributions 80*d4514f0bSApple OSS Distributions UNIX_SYSCALL_NONAME(gettimeofday,0,cerror_nocancel) 81*d4514f0bSApple OSS Distributions /* 82*d4514f0bSApple OSS Distributions * <rdar://problem/26410029> 83*d4514f0bSApple OSS Distributions * If rax is 0, we're on a new kernel and timeval was written by the kernel. 84*d4514f0bSApple OSS Distributions * Otherwise, rax:rdx contains the timeval and we marshal into timeval. 85*d4514f0bSApple OSS Distributions */ 86*d4514f0bSApple OSS Distributions cmp $0, %rax 87*d4514f0bSApple OSS Distributions je 2f 88*d4514f0bSApple OSS Distributions movq %rax, (%rdi) 89*d4514f0bSApple OSS Distributions movl %edx, 8(%rdi) 90*d4514f0bSApple OSS Distributions xorl %eax, %eax 91*d4514f0bSApple OSS Distributions2: 92*d4514f0bSApple OSS Distributions ret 93*d4514f0bSApple OSS Distributions 94*d4514f0bSApple OSS Distributions#elif defined(__arm__) 95*d4514f0bSApple OSS Distributions 96*d4514f0bSApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 97*d4514f0bSApple OSS Distributions 98*d4514f0bSApple OSS Distributions.text 99*d4514f0bSApple OSS Distributions.align 2 100*d4514f0bSApple OSS Distributions.globl ___gettimeofday 101*d4514f0bSApple OSS Distributions___gettimeofday: 102*d4514f0bSApple OSS Distributions mov r2, #0x0 103*d4514f0bSApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 104*d4514f0bSApple OSS Distributions bx lr 105*d4514f0bSApple OSS Distributions 106*d4514f0bSApple OSS Distributions#elif defined(__arm64__) 107*d4514f0bSApple OSS Distributions 108*d4514f0bSApple OSS Distributions__SYSCALL2(___gettimeofday_with_mach, gettimeofday, 3, cerror_nocancel) 109*d4514f0bSApple OSS Distributions 110*d4514f0bSApple OSS Distributions.text 111*d4514f0bSApple OSS Distributions.align 2 112*d4514f0bSApple OSS Distributions.globl ___gettimeofday 113*d4514f0bSApple OSS Distributions___gettimeofday: 114*d4514f0bSApple OSS Distributions movz x2, #0x0 115*d4514f0bSApple OSS Distributions SYSCALL_NONAME(gettimeofday, 3, cerror_nocancel) 116*d4514f0bSApple OSS Distributions ret 117*d4514f0bSApple OSS Distributions 118*d4514f0bSApple OSS Distributions#else 119*d4514f0bSApple OSS Distributions#error Unsupported architecture 120*d4514f0bSApple OSS Distributions#endif 121