| 1 | /*␊ |
| 2 | * Copyright (c) 2004-2006 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 7 | * as defined in and that are subject to the Apple Public Source License␊ |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 9 | * compliance with the License. The rights granted to you under the License␊ |
| 10 | * may not be used to create, or enable the creation or redistribution of,␊ |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to␊ |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any␊ |
| 13 | * terms of an Apple operating system software license agreement.␊ |
| 14 | * ␊ |
| 15 | * Please obtain a copy of the License at␊ |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file.␊ |
| 17 | * ␊ |
| 18 | * The Original Code and all software distributed under the License are␊ |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 23 | * Please see the License for the specific language governing rights and␊ |
| 24 | * limitations under the License.␊ |
| 25 | * ␊ |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@␊ |
| 27 | */␊ |
| 28 | ␊ |
| 29 | #include <sys/cdefs.h>␊ |
| 30 | ␊ |
| 31 | #ifdef __need_ucontext_t␊ |
| 32 | #ifndef __need_struct_ucontext␊ |
| 33 | #define __need_struct_ucontext␊ |
| 34 | #endif /* __need_struct_ucontext */␊ |
| 35 | #endif /* __need_ucontext_t */␊ |
| 36 | ␊ |
| 37 | #ifdef __need_ucontext64_t␊ |
| 38 | #ifndef __need_struct_ucontext64␊ |
| 39 | #define __need_struct_ucontext64␊ |
| 40 | #endif /* __need_struct_ucontext64 */␊ |
| 41 | #endif /* __need_ucontext64_t */␊ |
| 42 | ␊ |
| 43 | #ifdef __need_struct_ucontext␊ |
| 44 | #ifndef __need_struct_mcontext␊ |
| 45 | #define __need_struct_mcontext␊ |
| 46 | #endif /* __need_struct_mcontext */␊ |
| 47 | #endif /* __need_struct_ucontext */␊ |
| 48 | ␊ |
| 49 | #ifdef __need_struct_ucontext64␊ |
| 50 | #ifndef __need_struct_mcontext64␊ |
| 51 | #define __need_struct_mcontext64␊ |
| 52 | #endif /* __need_struct_mcontext64 */␊ |
| 53 | #endif /* __need_struct_ucontext64 */␊ |
| 54 | ␊ |
| 55 | #if defined(__need_struct_mcontext) || defined(__need_struct_mcontext64)␊ |
| 56 | #include <machine/_structs.h>␊ |
| 57 | #endif /* __need_struct_mcontext || __need_struct_mcontext64 */␊ |
| 58 | ␊ |
| 59 | #if defined(__need_stack_t) || defined(__need_struct_ucontext) || defined(__need_struct_ucontext64)␊ |
| 60 | #ifndef __need_struct_sigaltstack␊ |
| 61 | #define __need_struct_sigaltstack␊ |
| 62 | #endif /* __need_struct_sigaltstack */␊ |
| 63 | #endif /* __need_stack_t || __need_struct_ucontext || __need_struct_ucontext64 */␊ |
| 64 | ␊ |
| 65 | #ifdef __need_struct_sigaltstack␊ |
| 66 | #undef __need_struct_sigaltstack␊ |
| 67 | /* Structure used in sigaltstack call. */␊ |
| 68 | #ifndef _STRUCT_SIGALTSTACK␊ |
| 69 | #if __DARWIN_UNIX03␊ |
| 70 | #define _STRUCT_SIGALTSTACK␉struct __darwin_sigaltstack␊ |
| 71 | #else /* !__DARWIN_UNIX03 */␊ |
| 72 | #define _STRUCT_SIGALTSTACK␉struct sigaltstack␊ |
| 73 | #endif /* __DARWIN_UNIX03 */␊ |
| 74 | _STRUCT_SIGALTSTACK␊ |
| 75 | {␊ |
| 76 | ␉void␉␉*ss_sp;␉␉/* signal stack base */␊ |
| 77 | ␉__darwin_size_t ss_size;␉/* signal stack length */␊ |
| 78 | ␉int␉␉ss_flags;␉/* SA_DISABLE and/or SA_ONSTACK */␊ |
| 79 | };␊ |
| 80 | #endif /* _STRUCT_SIGALTSTACK */␊ |
| 81 | #endif /* __need_struct_sigaltstack */␊ |
| 82 | ␊ |
| 83 | #ifdef __need_struct_timespec␊ |
| 84 | #undef __need_struct_timespec␊ |
| 85 | #ifndef _STRUCT_TIMESPEC␊ |
| 86 | #define _STRUCT_TIMESPEC␉struct timespec␊ |
| 87 | _STRUCT_TIMESPEC␊ |
| 88 | {␊ |
| 89 | ␉__darwin_time_t␉tv_sec;␊ |
| 90 | ␉long␉␉tv_nsec;␊ |
| 91 | };␊ |
| 92 | #endif /* _STRUCT_TIMESPEC */␊ |
| 93 | #endif /* __need_struct_timespec */␊ |
| 94 | ␊ |
| 95 | #ifdef __need_struct_timeval␊ |
| 96 | #undef __need_struct_timeval␊ |
| 97 | #ifndef _STRUCT_TIMEVAL␊ |
| 98 | #define _STRUCT_TIMEVAL␉␉struct timeval␊ |
| 99 | _STRUCT_TIMEVAL␊ |
| 100 | {␊ |
| 101 | ␉__darwin_time_t␉␉tv_sec;␉␉/* seconds */␊ |
| 102 | ␉__darwin_suseconds_t␉tv_usec;␉/* and microseconds */␊ |
| 103 | };␊ |
| 104 | #endif /* _STRUCT_TIMEVAL */␊ |
| 105 | #endif /* __need_struct_timeval */␊ |
| 106 | ␊ |
| 107 | #ifdef __need_struct_timeval32␊ |
| 108 | #undef __need_struct_timeval32␊ |
| 109 | #ifndef _STRUCT_TIMEVAL32␊ |
| 110 | #define _STRUCT_TIMEVAL32␉struct timeval32␊ |
| 111 | _STRUCT_TIMEVAL32␊ |
| 112 | {␊ |
| 113 | ␉__int32_t␉␉tv_sec;␉␉/* seconds */␊ |
| 114 | ␉__int32_t␉␉tv_usec;␉/* and microseconds */␊ |
| 115 | };␊ |
| 116 | #endif /* _STRUCT_TIMEVAL32 */␊ |
| 117 | #endif /* __need_struct_timeval32 */␊ |
| 118 | ␊ |
| 119 | #ifdef __need_struct_ucontext␊ |
| 120 | #undef __need_struct_ucontext␊ |
| 121 | #ifndef _STRUCT_UCONTEXT␊ |
| 122 | #if __DARWIN_UNIX03␊ |
| 123 | #define _STRUCT_UCONTEXT␉struct __darwin_ucontext␊ |
| 124 | #else /* !__DARWIN_UNIX03 */␊ |
| 125 | #define _STRUCT_UCONTEXT␉struct ucontext␊ |
| 126 | #endif /* __DARWIN_UNIX03 */␊ |
| 127 | _STRUCT_UCONTEXT␊ |
| 128 | {␊ |
| 129 | ␉int␉␉␉uc_onstack;␊ |
| 130 | ␉__darwin_sigset_t␉uc_sigmask;␉/* signal mask used by this context */␊ |
| 131 | ␉_STRUCT_SIGALTSTACK ␉uc_stack;␉/* stack used by this context */␊ |
| 132 | ␉_STRUCT_UCONTEXT␉*uc_link;␉/* pointer to resuming context */␊ |
| 133 | ␉__darwin_size_t␉␉uc_mcsize;␉/* size of the machine context passed in */␊ |
| 134 | ␉_STRUCT_MCONTEXT␉*uc_mcontext;␉/* pointer to machine specific context */␊ |
| 135 | #ifdef _XOPEN_SOURCE␊ |
| 136 | ␉_STRUCT_MCONTEXT␉__mcontext_data;␊ |
| 137 | #endif /* _XOPEN_SOURCE */␊ |
| 138 | };␊ |
| 139 | #endif /* _STRUCT_UCONTEXT */␊ |
| 140 | #endif /* __need_struct_ucontext */␊ |
| 141 | ␊ |
| 142 | #ifdef __need_struct_ucontext64␊ |
| 143 | #undef __need_struct_ucontext64␊ |
| 144 | #ifndef _STRUCT_UCONTEXT64␊ |
| 145 | #if __DARWIN_UNIX03␊ |
| 146 | #define _STRUCT_UCONTEXT64␉struct __darwin_ucontext64␊ |
| 147 | #else /* !__DARWIN_UNIX03 */␊ |
| 148 | #define _STRUCT_UCONTEXT64␉struct ucontext64␊ |
| 149 | #endif /* __DARWIN_UNIX03 */␊ |
| 150 | _STRUCT_UCONTEXT64␊ |
| 151 | {␊ |
| 152 | ␉int␉␉␉uc_onstack;␊ |
| 153 | ␉__darwin_sigset_t␉uc_sigmask;␉/* signal mask used by this context */␊ |
| 154 | ␉_STRUCT_SIGALTSTACK ␉uc_stack;␉/* stack used by this context */␊ |
| 155 | ␉_STRUCT_UCONTEXT64␉*uc_link;␉/* pointer to resuming context */␊ |
| 156 | ␉__darwin_size_t␉␉uc_mcsize;␉/* size of the machine context passed in */␊ |
| 157 | ␉_STRUCT_MCONTEXT64␉*uc_mcontext64;␉/* pointer to machine specific context */␊ |
| 158 | };␊ |
| 159 | #endif /* _STRUCT_UCONTEXT64 */␊ |
| 160 | #endif /* __need_struct_ucontext64 */␊ |
| 161 | ␊ |
| 162 | ␊ |
| 163 | #ifdef __need_fd_set␊ |
| 164 | #undef __need_fd_set␊ |
| 165 | #ifndef _FD_SET␊ |
| 166 | #define _FD_SET␊ |
| 167 | /*␊ |
| 168 | * Select uses bit masks of file descriptors in longs. These macros␊ |
| 169 | * manipulate such bit fields (the filesystem macros use chars). The␊ |
| 170 | * extra protection here is to permit application redefinition above␊ |
| 171 | * the default size.␊ |
| 172 | */␊ |
| 173 | #ifdef FD_SETSIZE␊ |
| 174 | #define␉__DARWIN_FD_SETSIZE␉FD_SETSIZE␊ |
| 175 | #else /* !FD_SETSIZE */␊ |
| 176 | #define␉__DARWIN_FD_SETSIZE␉1024␊ |
| 177 | #endif /* FD_SETSIZE */␊ |
| 178 | #define␉__DARWIN_NBBY␉␉8␉␉␉␉/* bits in a byte */␊ |
| 179 | #define __DARWIN_NFDBITS␉(sizeof(__int32_t) * __DARWIN_NBBY) /* bits per mask */␊ |
| 180 | #define␉__DARWIN_howmany(x, y)␉((((x) % (y)) == 0) ? ((x) / (y)) : (((x) / (y)) + 1)) /* # y's == x bits? */␊ |
| 181 | ␊ |
| 182 | __BEGIN_DECLS␊ |
| 183 | typedef␉struct fd_set {␊ |
| 184 | ␉__int32_t␉fds_bits[__DARWIN_howmany(__DARWIN_FD_SETSIZE, __DARWIN_NFDBITS)];␊ |
| 185 | } fd_set;␊ |
| 186 | __END_DECLS␊ |
| 187 | ␊ |
| 188 | /* This inline avoids argument side-effect issues with FD_ISSET() */␊ |
| 189 | static __inline int␊ |
| 190 | __darwin_fd_isset(int _n, const struct fd_set *_p)␊ |
| 191 | {␊ |
| 192 | ␉return (_p->fds_bits[_n/__DARWIN_NFDBITS] & (1<<(_n % __DARWIN_NFDBITS)));␊ |
| 193 | }␊ |
| 194 | ␊ |
| 195 | #define␉__DARWIN_FD_SET(n, p)␉do { int __fd = (n); ((p)->fds_bits[__fd/__DARWIN_NFDBITS] |= (1<<(__fd % __DARWIN_NFDBITS))); } while(0)␊ |
| 196 | #define␉__DARWIN_FD_CLR(n, p)␉do { int __fd = (n); ((p)->fds_bits[__fd/__DARWIN_NFDBITS] &= ~(1<<(__fd % __DARWIN_NFDBITS))); } while(0)␊ |
| 197 | #define␉__DARWIN_FD_ISSET(n, p)␉__darwin_fd_isset((n), (p))␊ |
| 198 | ␊ |
| 199 | #if __GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ >= 3␊ |
| 200 | /*␊ |
| 201 | * Use the built-in bzero function instead of the library version so that␊ |
| 202 | * we do not pollute the namespace or introduce prototype warnings.␊ |
| 203 | */␊ |
| 204 | #define␉__DARWIN_FD_ZERO(p)␉__builtin_bzero(p, sizeof(*(p)))␊ |
| 205 | #else␊ |
| 206 | #define␉__DARWIN_FD_ZERO(p)␉bzero(p, sizeof(*(p)))␊ |
| 207 | #endif␊ |
| 208 | ␊ |
| 209 | #define␉__DARWIN_FD_COPY(f, t)␉bcopy(f, t, sizeof(*(f)))␊ |
| 210 | #endif /* _FD_SET */␊ |
| 211 | #endif /* __need_fd_set */␊ |
| 212 | ␊ |
| 213 | #ifdef __need_stack_t␊ |
| 214 | #undef __need_stack_t␊ |
| 215 | #ifndef _STACK_T␊ |
| 216 | #define _STACK_T␊ |
| 217 | typedef _STRUCT_SIGALTSTACK␉stack_t; /* [???] signal stack */␊ |
| 218 | #endif /* _STACK_T */␊ |
| 219 | #endif /* __need_stack_t */␊ |
| 220 | ␊ |
| 221 | #ifdef __need_ucontext_t␊ |
| 222 | #undef __need_ucontext_t␊ |
| 223 | /* user context */␊ |
| 224 | #ifndef _UCONTEXT_T␊ |
| 225 | #define _UCONTEXT_T␊ |
| 226 | typedef _STRUCT_UCONTEXT␉ucontext_t;␉/* [???] user context */␊ |
| 227 | #endif /* _UCONTEXT_T */␊ |
| 228 | #endif /* __need_ucontext_t */␊ |
| 229 | ␊ |
| 230 | #ifdef __need_ucontext64_t␊ |
| 231 | #undef __need_ucontext64_t␊ |
| 232 | #ifndef _UCONTEXT64_T␊ |
| 233 | #define _UCONTEXT64_T␊ |
| 234 | typedef _STRUCT_UCONTEXT64␉ucontext64_t;␉/* [???] user context */␊ |
| 235 | #endif /* _UCONTEXT64_T */␊ |
| 236 | #endif /* __need_ucontext64_t */␊ |
| 237 | |
