1*d4514f0bSApple OSS Distributions/* 2*d4514f0bSApple OSS Distributions * Copyright (c) 1999-2015 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/* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved. 29*d4514f0bSApple OSS Distributions */ 30*d4514f0bSApple OSS Distributions 31*d4514f0bSApple OSS Distributions#include "SYS.h" 32*d4514f0bSApple OSS Distributions 33*d4514f0bSApple OSS Distributions#if defined(__i386__) 34*d4514f0bSApple OSS Distributions 35*d4514f0bSApple OSS Distributions/* 36*d4514f0bSApple OSS Distributions * i386 needs custom assembly to transform the return from syscalls 37*d4514f0bSApple OSS Distributions * into a proper stack for a function call out to cerror{,_nocancel}. 38*d4514f0bSApple OSS Distributions */ 39*d4514f0bSApple OSS Distributions 40*d4514f0bSApple OSS DistributionsLABEL(tramp_cerror) 41*d4514f0bSApple OSS Distributions mov %esp, %edx 42*d4514f0bSApple OSS Distributions andl $0xfffffff0, %esp 43*d4514f0bSApple OSS Distributions subl $16, %esp 44*d4514f0bSApple OSS Distributions movl %edx, 4(%esp) 45*d4514f0bSApple OSS Distributions movl %eax, (%esp) 46*d4514f0bSApple OSS Distributions CALL_EXTERN(_cerror) 47*d4514f0bSApple OSS Distributions movl 4(%esp), %esp 48*d4514f0bSApple OSS Distributions ret 49*d4514f0bSApple OSS Distributions 50*d4514f0bSApple OSS DistributionsLABEL(tramp_cerror_nocancel) 51*d4514f0bSApple OSS Distributions mov %esp, %edx 52*d4514f0bSApple OSS Distributions andl $0xfffffff0, %esp 53*d4514f0bSApple OSS Distributions subl $16, %esp 54*d4514f0bSApple OSS Distributions movl %edx, 4(%esp) 55*d4514f0bSApple OSS Distributions movl %eax, (%esp) 56*d4514f0bSApple OSS Distributions CALL_EXTERN(_cerror_nocancel) 57*d4514f0bSApple OSS Distributions movl 4(%esp), %esp 58*d4514f0bSApple OSS Distributions ret 59*d4514f0bSApple OSS Distributions 60*d4514f0bSApple OSS DistributionsLABEL(__sysenter_trap) 61*d4514f0bSApple OSS Distributions popl %edx 62*d4514f0bSApple OSS Distributions movl %esp, %ecx 63*d4514f0bSApple OSS Distributions sysenter 64*d4514f0bSApple OSS Distributions 65*d4514f0bSApple OSS Distributions .globl _i386_get_ldt 66*d4514f0bSApple OSS Distributions ALIGN 67*d4514f0bSApple OSS Distributions_i386_get_ldt: 68*d4514f0bSApple OSS Distributions movl $6,%eax 69*d4514f0bSApple OSS Distributions MACHDEP_SYSCALL_TRAP 70*d4514f0bSApple OSS Distributions jnb 2f 71*d4514f0bSApple OSS Distributions jmp tramp_cerror 72*d4514f0bSApple OSS Distributions2: ret 73*d4514f0bSApple OSS Distributions 74*d4514f0bSApple OSS Distributions 75*d4514f0bSApple OSS Distributions .globl _i386_set_ldt 76*d4514f0bSApple OSS Distributions ALIGN 77*d4514f0bSApple OSS Distributions_i386_set_ldt: 78*d4514f0bSApple OSS Distributions movl $5,%eax 79*d4514f0bSApple OSS Distributions MACHDEP_SYSCALL_TRAP 80*d4514f0bSApple OSS Distributions jnb 2f 81*d4514f0bSApple OSS Distributions jmp tramp_cerror 82*d4514f0bSApple OSS Distributions2: ret 83*d4514f0bSApple OSS Distributions 84*d4514f0bSApple OSS Distributions ALIGN 85*d4514f0bSApple OSS Distributions .globl __thread_set_tsd_base 86*d4514f0bSApple OSS Distributions__thread_set_tsd_base: 87*d4514f0bSApple OSS Distributions pushl 4(%esp) 88*d4514f0bSApple OSS Distributions pushl $0 89*d4514f0bSApple OSS Distributions movl $3,%eax 90*d4514f0bSApple OSS Distributions MACHDEP_SYSCALL_TRAP 91*d4514f0bSApple OSS Distributions addl $8,%esp 92*d4514f0bSApple OSS Distributions ret 93*d4514f0bSApple OSS Distributions 94*d4514f0bSApple OSS Distributions#elif defined(__x86_64__) 95*d4514f0bSApple OSS Distributions 96*d4514f0bSApple OSS Distributions .globl _i386_get_ldt 97*d4514f0bSApple OSS Distributions ALIGN 98*d4514f0bSApple OSS Distributions_i386_get_ldt: 99*d4514f0bSApple OSS Distributions movl $SYSCALL_CONSTRUCT_MDEP(6), %eax 100*d4514f0bSApple OSS Distributions MACHDEP_SYSCALL_TRAP 101*d4514f0bSApple OSS Distributions jnb 2f 102*d4514f0bSApple OSS Distributions movq %rax, %rdi 103*d4514f0bSApple OSS Distributions jmp _cerror 104*d4514f0bSApple OSS Distributions2: ret 105*d4514f0bSApple OSS Distributions 106*d4514f0bSApple OSS Distributions 107*d4514f0bSApple OSS Distributions .globl _i386_set_ldt 108*d4514f0bSApple OSS Distributions ALIGN 109*d4514f0bSApple OSS Distributions_i386_set_ldt: 110*d4514f0bSApple OSS Distributions movl $SYSCALL_CONSTRUCT_MDEP(5), %eax 111*d4514f0bSApple OSS Distributions MACHDEP_SYSCALL_TRAP 112*d4514f0bSApple OSS Distributions jnb 2f 113*d4514f0bSApple OSS Distributions movq %rax, %rdi 114*d4514f0bSApple OSS Distributions jmp _cerror 115*d4514f0bSApple OSS Distributions2: ret 116*d4514f0bSApple OSS Distributions 117*d4514f0bSApple OSS Distributions ALIGN 118*d4514f0bSApple OSS Distributions .globl __thread_set_tsd_base 119*d4514f0bSApple OSS Distributions__thread_set_tsd_base: 120*d4514f0bSApple OSS Distributions movl $0, %esi // 0 as the second argument 121*d4514f0bSApple OSS Distributions movl $ SYSCALL_CONSTRUCT_MDEP(3), %eax // Machine-dependent syscall number 3 122*d4514f0bSApple OSS Distributions MACHDEP_SYSCALL_TRAP 123*d4514f0bSApple OSS Distributions ret 124*d4514f0bSApple OSS Distributions 125*d4514f0bSApple OSS Distributions#elif defined(__arm__) 126*d4514f0bSApple OSS Distributions 127*d4514f0bSApple OSS Distributions .align 2 128*d4514f0bSApple OSS Distributions .globl __thread_set_tsd_base 129*d4514f0bSApple OSS Distributions__thread_set_tsd_base: 130*d4514f0bSApple OSS Distributions mov r3, #2 131*d4514f0bSApple OSS Distributions mov r12, #0x80000000 132*d4514f0bSApple OSS Distributions swi #SWI_SYSCALL 133*d4514f0bSApple OSS Distributions bx lr 134*d4514f0bSApple OSS Distributions 135*d4514f0bSApple OSS Distributions#elif defined(__arm64__) 136*d4514f0bSApple OSS Distributions 137*d4514f0bSApple OSS Distributions .align 2 138*d4514f0bSApple OSS Distributions .globl __thread_set_tsd_base 139*d4514f0bSApple OSS Distributions__thread_set_tsd_base: 140*d4514f0bSApple OSS Distributions mov x3, #2 141*d4514f0bSApple OSS Distributions mov x16, #0x80000000 142*d4514f0bSApple OSS Distributions svc #SWI_SYSCALL 143*d4514f0bSApple OSS Distributions ret 144*d4514f0bSApple OSS Distributions 145*d4514f0bSApple OSS Distributions#else 146*d4514f0bSApple OSS Distributions#error unknown architecture 147*d4514f0bSApple OSS Distributions#endif 148*d4514f0bSApple OSS Distributions 149*d4514f0bSApple OSS Distributions.subsections_via_symbols 150