1*d8b80295SApple OSS Distributions/* 2*d8b80295SApple OSS Distributions * Copyright (c) 1999-2015 Apple Inc. All rights reserved. 3*d8b80295SApple OSS Distributions * 4*d8b80295SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*d8b80295SApple OSS Distributions * 6*d8b80295SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*d8b80295SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*d8b80295SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*d8b80295SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*d8b80295SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*d8b80295SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*d8b80295SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*d8b80295SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*d8b80295SApple OSS Distributions * 15*d8b80295SApple OSS Distributions * Please obtain a copy of the License at 16*d8b80295SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*d8b80295SApple OSS Distributions * 18*d8b80295SApple OSS Distributions * The Original Code and all software distributed under the License are 19*d8b80295SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*d8b80295SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*d8b80295SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*d8b80295SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*d8b80295SApple OSS Distributions * Please see the License for the specific language governing rights and 24*d8b80295SApple OSS Distributions * limitations under the License. 25*d8b80295SApple OSS Distributions * 26*d8b80295SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*d8b80295SApple OSS Distributions */ 28*d8b80295SApple OSS Distributions/* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved. 29*d8b80295SApple OSS Distributions */ 30*d8b80295SApple OSS Distributions 31*d8b80295SApple OSS Distributions#include "SYS.h" 32*d8b80295SApple OSS Distributions 33*d8b80295SApple OSS Distributions#if defined(__i386__) 34*d8b80295SApple OSS Distributions 35*d8b80295SApple OSS Distributions/* 36*d8b80295SApple OSS Distributions * i386 needs custom assembly to transform the return from syscalls 37*d8b80295SApple OSS Distributions * into a proper stack for a function call out to cerror{,_nocancel}. 38*d8b80295SApple OSS Distributions */ 39*d8b80295SApple OSS Distributions 40*d8b80295SApple OSS DistributionsLABEL(tramp_cerror) 41*d8b80295SApple OSS Distributions mov %esp, %edx 42*d8b80295SApple OSS Distributions andl $0xfffffff0, %esp 43*d8b80295SApple OSS Distributions subl $16, %esp 44*d8b80295SApple OSS Distributions movl %edx, 4(%esp) 45*d8b80295SApple OSS Distributions movl %eax, (%esp) 46*d8b80295SApple OSS Distributions CALL_EXTERN(_cerror) 47*d8b80295SApple OSS Distributions movl 4(%esp), %esp 48*d8b80295SApple OSS Distributions ret 49*d8b80295SApple OSS Distributions 50*d8b80295SApple OSS DistributionsLABEL(tramp_cerror_nocancel) 51*d8b80295SApple OSS Distributions mov %esp, %edx 52*d8b80295SApple OSS Distributions andl $0xfffffff0, %esp 53*d8b80295SApple OSS Distributions subl $16, %esp 54*d8b80295SApple OSS Distributions movl %edx, 4(%esp) 55*d8b80295SApple OSS Distributions movl %eax, (%esp) 56*d8b80295SApple OSS Distributions CALL_EXTERN(_cerror_nocancel) 57*d8b80295SApple OSS Distributions movl 4(%esp), %esp 58*d8b80295SApple OSS Distributions ret 59*d8b80295SApple OSS Distributions 60*d8b80295SApple OSS DistributionsLABEL(__sysenter_trap) 61*d8b80295SApple OSS Distributions popl %edx 62*d8b80295SApple OSS Distributions movl %esp, %ecx 63*d8b80295SApple OSS Distributions sysenter 64*d8b80295SApple OSS Distributions 65*d8b80295SApple OSS Distributions .globl _i386_get_ldt 66*d8b80295SApple OSS Distributions ALIGN 67*d8b80295SApple OSS Distributions_i386_get_ldt: 68*d8b80295SApple OSS Distributions movl $6,%eax 69*d8b80295SApple OSS Distributions MACHDEP_SYSCALL_TRAP 70*d8b80295SApple OSS Distributions jnb 2f 71*d8b80295SApple OSS Distributions jmp tramp_cerror 72*d8b80295SApple OSS Distributions2: ret 73*d8b80295SApple OSS Distributions 74*d8b80295SApple OSS Distributions 75*d8b80295SApple OSS Distributions .globl _i386_set_ldt 76*d8b80295SApple OSS Distributions ALIGN 77*d8b80295SApple OSS Distributions_i386_set_ldt: 78*d8b80295SApple OSS Distributions movl $5,%eax 79*d8b80295SApple OSS Distributions MACHDEP_SYSCALL_TRAP 80*d8b80295SApple OSS Distributions jnb 2f 81*d8b80295SApple OSS Distributions jmp tramp_cerror 82*d8b80295SApple OSS Distributions2: ret 83*d8b80295SApple OSS Distributions 84*d8b80295SApple OSS Distributions ALIGN 85*d8b80295SApple OSS Distributions .globl __thread_set_tsd_base 86*d8b80295SApple OSS Distributions__thread_set_tsd_base: 87*d8b80295SApple OSS Distributions pushl 4(%esp) 88*d8b80295SApple OSS Distributions pushl $0 89*d8b80295SApple OSS Distributions movl $3,%eax 90*d8b80295SApple OSS Distributions MACHDEP_SYSCALL_TRAP 91*d8b80295SApple OSS Distributions addl $8,%esp 92*d8b80295SApple OSS Distributions ret 93*d8b80295SApple OSS Distributions 94*d8b80295SApple OSS Distributions#elif defined(__x86_64__) 95*d8b80295SApple OSS Distributions 96*d8b80295SApple OSS Distributions .globl _i386_get_ldt 97*d8b80295SApple OSS Distributions ALIGN 98*d8b80295SApple OSS Distributions_i386_get_ldt: 99*d8b80295SApple OSS Distributions movl $SYSCALL_CONSTRUCT_MDEP(6), %eax 100*d8b80295SApple OSS Distributions MACHDEP_SYSCALL_TRAP 101*d8b80295SApple OSS Distributions jnb 2f 102*d8b80295SApple OSS Distributions movq %rax, %rdi 103*d8b80295SApple OSS Distributions jmp _cerror 104*d8b80295SApple OSS Distributions2: ret 105*d8b80295SApple OSS Distributions 106*d8b80295SApple OSS Distributions 107*d8b80295SApple OSS Distributions .globl _i386_set_ldt 108*d8b80295SApple OSS Distributions ALIGN 109*d8b80295SApple OSS Distributions_i386_set_ldt: 110*d8b80295SApple OSS Distributions movl $SYSCALL_CONSTRUCT_MDEP(5), %eax 111*d8b80295SApple OSS Distributions MACHDEP_SYSCALL_TRAP 112*d8b80295SApple OSS Distributions jnb 2f 113*d8b80295SApple OSS Distributions movq %rax, %rdi 114*d8b80295SApple OSS Distributions jmp _cerror 115*d8b80295SApple OSS Distributions2: ret 116*d8b80295SApple OSS Distributions 117*d8b80295SApple OSS Distributions ALIGN 118*d8b80295SApple OSS Distributions .globl __thread_set_tsd_base 119*d8b80295SApple OSS Distributions__thread_set_tsd_base: 120*d8b80295SApple OSS Distributions movl $0, %esi // 0 as the second argument 121*d8b80295SApple OSS Distributions movl $ SYSCALL_CONSTRUCT_MDEP(3), %eax // Machine-dependent syscall number 3 122*d8b80295SApple OSS Distributions MACHDEP_SYSCALL_TRAP 123*d8b80295SApple OSS Distributions ret 124*d8b80295SApple OSS Distributions 125*d8b80295SApple OSS Distributions#elif defined(__arm__) 126*d8b80295SApple OSS Distributions 127*d8b80295SApple OSS Distributions .align 2 128*d8b80295SApple OSS Distributions .globl __thread_set_tsd_base 129*d8b80295SApple OSS Distributions__thread_set_tsd_base: 130*d8b80295SApple OSS Distributions mov r3, #2 131*d8b80295SApple OSS Distributions mov r12, #0x80000000 132*d8b80295SApple OSS Distributions swi #SWI_SYSCALL 133*d8b80295SApple OSS Distributions bx lr 134*d8b80295SApple OSS Distributions 135*d8b80295SApple OSS Distributions#elif defined(__arm64__) 136*d8b80295SApple OSS Distributions 137*d8b80295SApple OSS Distributions .align 2 138*d8b80295SApple OSS Distributions .globl __thread_set_tsd_base 139*d8b80295SApple OSS Distributions__thread_set_tsd_base: 140*d8b80295SApple OSS Distributions mov x3, #2 141*d8b80295SApple OSS Distributions mov x16, #0x80000000 142*d8b80295SApple OSS Distributions svc #SWI_SYSCALL 143*d8b80295SApple OSS Distributions ret 144*d8b80295SApple OSS Distributions 145*d8b80295SApple OSS Distributions#else 146*d8b80295SApple OSS Distributions#error unknown architecture 147*d8b80295SApple OSS Distributions#endif 148*d8b80295SApple OSS Distributions 149*d8b80295SApple OSS Distributions.subsections_via_symbols 150