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