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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 | /* * Copyright (c) 1999-2011 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__) .globl _errno LABEL(cerror) movl $0,%ecx jmp 1f LABEL(cerror_nocancel) movl $1,%ecx 1: REG_TO_EXTERN(%eax, _errno) mov %esp,%edx andl $0xfffffff0,%esp subl $16,%esp movl %edx,8(%esp) movl %ecx,4(%esp) movl %eax,(%esp) CALL_EXTERN(_cthread_set_errno_self) movl 8(%esp),%esp movl $-1,%eax movl $-1,%edx /* in case a 64-bit value is returned */ ret LABEL(__sysenter_trap) popl %edx movl %esp, %ecx sysenter #elif defined(__x86_64__) .globl _errno LABEL(cerror) /* cancelable syscall, for arg1 to _cthread_set_errno_self */ movq $0,%rsi jmp 1f LABEL(cerror_nocancel) /* non-cancelable, see above. */ movq $1,%rsi 1: PICIFY(_errno) /* address -> %r11 */ movl %eax,(%r11) mov %rsp,%rdx andq $-16,%rsp subq $16,%rsp // Preserve the original stack movq %rdx,(%rsp) movq %rax,%rdi CALL_EXTERN(_cthread_set_errno_self) // Restore the original stack movq (%rsp),%rsp movq $-1,%rax movq $-1,%rdx /* in case a 128-bit value is returned */ ret #else #error Unsupported architecture #endif #if defined(__i386__) || defined(__x86_64__) .globl _i386_get_ldt ALIGN _i386_get_ldt: movl $6,%eax MACHDEP_SYSCALL_TRAP jnb 2f jmp cerror 2: ret .globl _i386_set_ldt ALIGN _i386_set_ldt: movl $5,%eax MACHDEP_SYSCALL_TRAP jnb 2f jmp cerror 2: ret #endif |