1*5c2921b0SApple OSS Distributions/* 2*5c2921b0SApple OSS Distributions * Copyright (c) 1999-2015 Apple Inc. All rights reserved. 3*5c2921b0SApple OSS Distributions * 4*5c2921b0SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*5c2921b0SApple OSS Distributions * 6*5c2921b0SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*5c2921b0SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*5c2921b0SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*5c2921b0SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*5c2921b0SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*5c2921b0SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*5c2921b0SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*5c2921b0SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*5c2921b0SApple OSS Distributions * 15*5c2921b0SApple OSS Distributions * Please obtain a copy of the License at 16*5c2921b0SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*5c2921b0SApple OSS Distributions * 18*5c2921b0SApple OSS Distributions * The Original Code and all software distributed under the License are 19*5c2921b0SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*5c2921b0SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*5c2921b0SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*5c2921b0SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*5c2921b0SApple OSS Distributions * Please see the License for the specific language governing rights and 24*5c2921b0SApple OSS Distributions * limitations under the License. 25*5c2921b0SApple OSS Distributions * 26*5c2921b0SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*5c2921b0SApple OSS Distributions */ 28*5c2921b0SApple OSS Distributions/* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved. 29*5c2921b0SApple OSS Distributions */ 30*5c2921b0SApple OSS Distributions 31*5c2921b0SApple OSS Distributions#include "SYS.h" 32*5c2921b0SApple OSS Distributions 33*5c2921b0SApple OSS Distributions#if defined(__i386__) 34*5c2921b0SApple OSS Distributions 35*5c2921b0SApple OSS Distributions/* 36*5c2921b0SApple OSS Distributions * i386 needs custom assembly to transform the return from syscalls 37*5c2921b0SApple OSS Distributions * into a proper stack for a function call out to cerror{,_nocancel}. 38*5c2921b0SApple OSS Distributions */ 39*5c2921b0SApple OSS Distributions 40*5c2921b0SApple OSS DistributionsLABEL(tramp_cerror) 41*5c2921b0SApple OSS Distributions mov %esp, %edx 42*5c2921b0SApple OSS Distributions andl $0xfffffff0, %esp 43*5c2921b0SApple OSS Distributions subl $16, %esp 44*5c2921b0SApple OSS Distributions movl %edx, 4(%esp) 45*5c2921b0SApple OSS Distributions movl %eax, (%esp) 46*5c2921b0SApple OSS Distributions CALL_EXTERN(_cerror) 47*5c2921b0SApple OSS Distributions movl 4(%esp), %esp 48*5c2921b0SApple OSS Distributions ret 49*5c2921b0SApple OSS Distributions 50*5c2921b0SApple OSS DistributionsLABEL(tramp_cerror_nocancel) 51*5c2921b0SApple OSS Distributions mov %esp, %edx 52*5c2921b0SApple OSS Distributions andl $0xfffffff0, %esp 53*5c2921b0SApple OSS Distributions subl $16, %esp 54*5c2921b0SApple OSS Distributions movl %edx, 4(%esp) 55*5c2921b0SApple OSS Distributions movl %eax, (%esp) 56*5c2921b0SApple OSS Distributions CALL_EXTERN(_cerror_nocancel) 57*5c2921b0SApple OSS Distributions movl 4(%esp), %esp 58*5c2921b0SApple OSS Distributions ret 59*5c2921b0SApple OSS Distributions 60*5c2921b0SApple OSS DistributionsLABEL(__sysenter_trap) 61*5c2921b0SApple OSS Distributions popl %edx 62*5c2921b0SApple OSS Distributions movl %esp, %ecx 63*5c2921b0SApple OSS Distributions sysenter 64*5c2921b0SApple OSS Distributions 65*5c2921b0SApple OSS Distributions .globl _i386_get_ldt 66*5c2921b0SApple OSS Distributions ALIGN 67*5c2921b0SApple OSS Distributions_i386_get_ldt: 68*5c2921b0SApple OSS Distributions movl $6,%eax 69*5c2921b0SApple OSS Distributions MACHDEP_SYSCALL_TRAP 70*5c2921b0SApple OSS Distributions jnb 2f 71*5c2921b0SApple OSS Distributions jmp tramp_cerror 72*5c2921b0SApple OSS Distributions2: ret 73*5c2921b0SApple OSS Distributions 74*5c2921b0SApple OSS Distributions 75*5c2921b0SApple OSS Distributions .globl _i386_set_ldt 76*5c2921b0SApple OSS Distributions ALIGN 77*5c2921b0SApple OSS Distributions_i386_set_ldt: 78*5c2921b0SApple OSS Distributions movl $5,%eax 79*5c2921b0SApple OSS Distributions MACHDEP_SYSCALL_TRAP 80*5c2921b0SApple OSS Distributions jnb 2f 81*5c2921b0SApple OSS Distributions jmp tramp_cerror 82*5c2921b0SApple OSS Distributions2: ret 83*5c2921b0SApple OSS Distributions 84*5c2921b0SApple OSS Distributions ALIGN 85*5c2921b0SApple OSS Distributions .globl __thread_set_tsd_base 86*5c2921b0SApple OSS Distributions__thread_set_tsd_base: 87*5c2921b0SApple OSS Distributions pushl 4(%esp) 88*5c2921b0SApple OSS Distributions pushl $0 89*5c2921b0SApple OSS Distributions movl $3,%eax 90*5c2921b0SApple OSS Distributions MACHDEP_SYSCALL_TRAP 91*5c2921b0SApple OSS Distributions addl $8,%esp 92*5c2921b0SApple OSS Distributions ret 93*5c2921b0SApple OSS Distributions 94*5c2921b0SApple OSS Distributions#elif defined(__x86_64__) 95*5c2921b0SApple OSS Distributions 96*5c2921b0SApple OSS Distributions .globl _i386_get_ldt 97*5c2921b0SApple OSS Distributions ALIGN 98*5c2921b0SApple OSS Distributions_i386_get_ldt: 99*5c2921b0SApple OSS Distributions movl $SYSCALL_CONSTRUCT_MDEP(6), %eax 100*5c2921b0SApple OSS Distributions MACHDEP_SYSCALL_TRAP 101*5c2921b0SApple OSS Distributions jnb 2f 102*5c2921b0SApple OSS Distributions movq %rax, %rdi 103*5c2921b0SApple OSS Distributions jmp _cerror 104*5c2921b0SApple OSS Distributions2: ret 105*5c2921b0SApple OSS Distributions 106*5c2921b0SApple OSS Distributions 107*5c2921b0SApple OSS Distributions .globl _i386_set_ldt 108*5c2921b0SApple OSS Distributions ALIGN 109*5c2921b0SApple OSS Distributions_i386_set_ldt: 110*5c2921b0SApple OSS Distributions movl $SYSCALL_CONSTRUCT_MDEP(5), %eax 111*5c2921b0SApple OSS Distributions MACHDEP_SYSCALL_TRAP 112*5c2921b0SApple OSS Distributions jnb 2f 113*5c2921b0SApple OSS Distributions movq %rax, %rdi 114*5c2921b0SApple OSS Distributions jmp _cerror 115*5c2921b0SApple OSS Distributions2: ret 116*5c2921b0SApple OSS Distributions 117*5c2921b0SApple OSS Distributions ALIGN 118*5c2921b0SApple OSS Distributions .globl __thread_set_tsd_base 119*5c2921b0SApple OSS Distributions__thread_set_tsd_base: 120*5c2921b0SApple OSS Distributions movl $0, %esi // 0 as the second argument 121*5c2921b0SApple OSS Distributions movl $ SYSCALL_CONSTRUCT_MDEP(3), %eax // Machine-dependent syscall number 3 122*5c2921b0SApple OSS Distributions MACHDEP_SYSCALL_TRAP 123*5c2921b0SApple OSS Distributions ret 124*5c2921b0SApple OSS Distributions 125*5c2921b0SApple OSS Distributions#elif defined(__arm__) 126*5c2921b0SApple OSS Distributions 127*5c2921b0SApple OSS Distributions .align 2 128*5c2921b0SApple OSS Distributions .globl __thread_set_tsd_base 129*5c2921b0SApple OSS Distributions__thread_set_tsd_base: 130*5c2921b0SApple OSS Distributions mov r3, #2 131*5c2921b0SApple OSS Distributions mov r12, #0x80000000 132*5c2921b0SApple OSS Distributions swi #SWI_SYSCALL 133*5c2921b0SApple OSS Distributions bx lr 134*5c2921b0SApple OSS Distributions 135*5c2921b0SApple OSS Distributions#elif defined(__arm64__) 136*5c2921b0SApple OSS Distributions 137*5c2921b0SApple OSS Distributions .align 2 138*5c2921b0SApple OSS Distributions .globl __thread_set_tsd_base 139*5c2921b0SApple OSS Distributions__thread_set_tsd_base: 140*5c2921b0SApple OSS Distributions mov x3, #2 141*5c2921b0SApple OSS Distributions mov x16, #0x80000000 142*5c2921b0SApple OSS Distributions svc #SWI_SYSCALL 143*5c2921b0SApple OSS Distributions ret 144*5c2921b0SApple OSS Distributions 145*5c2921b0SApple OSS Distributions#else 146*5c2921b0SApple OSS Distributions#error unknown architecture 147*5c2921b0SApple OSS Distributions#endif 148*5c2921b0SApple OSS Distributions 149*5c2921b0SApple OSS Distributions.subsections_via_symbols 150