1*1b191cb5SApple OSS Distributions/* 2*1b191cb5SApple OSS Distributions * Copyright (c) 1999-2015 Apple Inc. All rights reserved. 3*1b191cb5SApple OSS Distributions * 4*1b191cb5SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*1b191cb5SApple OSS Distributions * 6*1b191cb5SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*1b191cb5SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*1b191cb5SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*1b191cb5SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*1b191cb5SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*1b191cb5SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*1b191cb5SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*1b191cb5SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*1b191cb5SApple OSS Distributions * 15*1b191cb5SApple OSS Distributions * Please obtain a copy of the License at 16*1b191cb5SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*1b191cb5SApple OSS Distributions * 18*1b191cb5SApple OSS Distributions * The Original Code and all software distributed under the License are 19*1b191cb5SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*1b191cb5SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*1b191cb5SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*1b191cb5SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*1b191cb5SApple OSS Distributions * Please see the License for the specific language governing rights and 24*1b191cb5SApple OSS Distributions * limitations under the License. 25*1b191cb5SApple OSS Distributions * 26*1b191cb5SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*1b191cb5SApple OSS Distributions */ 28*1b191cb5SApple OSS Distributions/* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved. 29*1b191cb5SApple OSS Distributions */ 30*1b191cb5SApple OSS Distributions 31*1b191cb5SApple OSS Distributions#include "SYS.h" 32*1b191cb5SApple OSS Distributions 33*1b191cb5SApple OSS Distributions#if defined(__i386__) 34*1b191cb5SApple OSS Distributions 35*1b191cb5SApple OSS Distributions/* 36*1b191cb5SApple OSS Distributions * i386 needs custom assembly to transform the return from syscalls 37*1b191cb5SApple OSS Distributions * into a proper stack for a function call out to cerror{,_nocancel}. 38*1b191cb5SApple OSS Distributions */ 39*1b191cb5SApple OSS Distributions 40*1b191cb5SApple OSS DistributionsLABEL(tramp_cerror) 41*1b191cb5SApple OSS Distributions mov %esp, %edx 42*1b191cb5SApple OSS Distributions andl $0xfffffff0, %esp 43*1b191cb5SApple OSS Distributions subl $16, %esp 44*1b191cb5SApple OSS Distributions movl %edx, 4(%esp) 45*1b191cb5SApple OSS Distributions movl %eax, (%esp) 46*1b191cb5SApple OSS Distributions CALL_EXTERN(_cerror) 47*1b191cb5SApple OSS Distributions movl 4(%esp), %esp 48*1b191cb5SApple OSS Distributions ret 49*1b191cb5SApple OSS Distributions 50*1b191cb5SApple OSS DistributionsLABEL(tramp_cerror_nocancel) 51*1b191cb5SApple OSS Distributions mov %esp, %edx 52*1b191cb5SApple OSS Distributions andl $0xfffffff0, %esp 53*1b191cb5SApple OSS Distributions subl $16, %esp 54*1b191cb5SApple OSS Distributions movl %edx, 4(%esp) 55*1b191cb5SApple OSS Distributions movl %eax, (%esp) 56*1b191cb5SApple OSS Distributions CALL_EXTERN(_cerror_nocancel) 57*1b191cb5SApple OSS Distributions movl 4(%esp), %esp 58*1b191cb5SApple OSS Distributions ret 59*1b191cb5SApple OSS Distributions 60*1b191cb5SApple OSS DistributionsLABEL(__sysenter_trap) 61*1b191cb5SApple OSS Distributions popl %edx 62*1b191cb5SApple OSS Distributions movl %esp, %ecx 63*1b191cb5SApple OSS Distributions sysenter 64*1b191cb5SApple OSS Distributions 65*1b191cb5SApple OSS Distributions .globl _i386_get_ldt 66*1b191cb5SApple OSS Distributions ALIGN 67*1b191cb5SApple OSS Distributions_i386_get_ldt: 68*1b191cb5SApple OSS Distributions movl $6,%eax 69*1b191cb5SApple OSS Distributions MACHDEP_SYSCALL_TRAP 70*1b191cb5SApple OSS Distributions jnb 2f 71*1b191cb5SApple OSS Distributions jmp tramp_cerror 72*1b191cb5SApple OSS Distributions2: ret 73*1b191cb5SApple OSS Distributions 74*1b191cb5SApple OSS Distributions 75*1b191cb5SApple OSS Distributions .globl _i386_set_ldt 76*1b191cb5SApple OSS Distributions ALIGN 77*1b191cb5SApple OSS Distributions_i386_set_ldt: 78*1b191cb5SApple OSS Distributions movl $5,%eax 79*1b191cb5SApple OSS Distributions MACHDEP_SYSCALL_TRAP 80*1b191cb5SApple OSS Distributions jnb 2f 81*1b191cb5SApple OSS Distributions jmp tramp_cerror 82*1b191cb5SApple OSS Distributions2: ret 83*1b191cb5SApple OSS Distributions 84*1b191cb5SApple OSS Distributions ALIGN 85*1b191cb5SApple OSS Distributions .globl __thread_set_tsd_base 86*1b191cb5SApple OSS Distributions__thread_set_tsd_base: 87*1b191cb5SApple OSS Distributions pushl 4(%esp) 88*1b191cb5SApple OSS Distributions pushl $0 89*1b191cb5SApple OSS Distributions movl $3,%eax 90*1b191cb5SApple OSS Distributions MACHDEP_SYSCALL_TRAP 91*1b191cb5SApple OSS Distributions addl $8,%esp 92*1b191cb5SApple OSS Distributions ret 93*1b191cb5SApple OSS Distributions 94*1b191cb5SApple OSS Distributions#elif defined(__x86_64__) 95*1b191cb5SApple OSS Distributions 96*1b191cb5SApple OSS Distributions .globl _i386_get_ldt 97*1b191cb5SApple OSS Distributions ALIGN 98*1b191cb5SApple OSS Distributions_i386_get_ldt: 99*1b191cb5SApple OSS Distributions movl $SYSCALL_CONSTRUCT_MDEP(6), %eax 100*1b191cb5SApple OSS Distributions MACHDEP_SYSCALL_TRAP 101*1b191cb5SApple OSS Distributions jnb 2f 102*1b191cb5SApple OSS Distributions movq %rax, %rdi 103*1b191cb5SApple OSS Distributions jmp _cerror 104*1b191cb5SApple OSS Distributions2: ret 105*1b191cb5SApple OSS Distributions 106*1b191cb5SApple OSS Distributions 107*1b191cb5SApple OSS Distributions .globl _i386_set_ldt 108*1b191cb5SApple OSS Distributions ALIGN 109*1b191cb5SApple OSS Distributions_i386_set_ldt: 110*1b191cb5SApple OSS Distributions movl $SYSCALL_CONSTRUCT_MDEP(5), %eax 111*1b191cb5SApple OSS Distributions MACHDEP_SYSCALL_TRAP 112*1b191cb5SApple OSS Distributions jnb 2f 113*1b191cb5SApple OSS Distributions movq %rax, %rdi 114*1b191cb5SApple OSS Distributions jmp _cerror 115*1b191cb5SApple OSS Distributions2: ret 116*1b191cb5SApple OSS Distributions 117*1b191cb5SApple OSS Distributions ALIGN 118*1b191cb5SApple OSS Distributions .globl __thread_set_tsd_base 119*1b191cb5SApple OSS Distributions__thread_set_tsd_base: 120*1b191cb5SApple OSS Distributions movl $0, %esi // 0 as the second argument 121*1b191cb5SApple OSS Distributions movl $ SYSCALL_CONSTRUCT_MDEP(3), %eax // Machine-dependent syscall number 3 122*1b191cb5SApple OSS Distributions MACHDEP_SYSCALL_TRAP 123*1b191cb5SApple OSS Distributions ret 124*1b191cb5SApple OSS Distributions 125*1b191cb5SApple OSS Distributions#elif defined(__arm__) 126*1b191cb5SApple OSS Distributions 127*1b191cb5SApple OSS Distributions .align 2 128*1b191cb5SApple OSS Distributions .globl __thread_set_tsd_base 129*1b191cb5SApple OSS Distributions__thread_set_tsd_base: 130*1b191cb5SApple OSS Distributions mov r3, #2 131*1b191cb5SApple OSS Distributions mov r12, #0x80000000 132*1b191cb5SApple OSS Distributions swi #SWI_SYSCALL 133*1b191cb5SApple OSS Distributions bx lr 134*1b191cb5SApple OSS Distributions 135*1b191cb5SApple OSS Distributions#elif defined(__arm64__) 136*1b191cb5SApple OSS Distributions 137*1b191cb5SApple OSS Distributions .align 2 138*1b191cb5SApple OSS Distributions .globl __thread_set_tsd_base 139*1b191cb5SApple OSS Distributions__thread_set_tsd_base: 140*1b191cb5SApple OSS Distributions mov x3, #2 141*1b191cb5SApple OSS Distributions mov x16, #0x80000000 142*1b191cb5SApple OSS Distributions svc #SWI_SYSCALL 143*1b191cb5SApple OSS Distributions ret 144*1b191cb5SApple OSS Distributions 145*1b191cb5SApple OSS Distributions#else 146*1b191cb5SApple OSS Distributions#error unknown architecture 147*1b191cb5SApple OSS Distributions#endif 148*1b191cb5SApple OSS Distributions 149*1b191cb5SApple OSS Distributions.subsections_via_symbols 150