_darwin.h (9756B)
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 #ifndef nspr_darwin_defs_h___ 7 #define nspr_darwin_defs_h___ 8 9 #include "prthread.h" 10 11 #include <libkern/OSAtomic.h> 12 #include <sys/syscall.h> 13 14 #ifdef __APPLE__ 15 #include <AvailabilityMacros.h> 16 #include <TargetConditionals.h> 17 #endif 18 19 #define PR_LINKER_ARCH "darwin" 20 #define _PR_SI_SYSNAME "DARWIN" 21 #ifdef __i386__ 22 #define _PR_SI_ARCHITECTURE "x86" 23 #elif defined(__x86_64__) 24 #define _PR_SI_ARCHITECTURE "x86-64" 25 #elif defined(__ppc__) 26 #define _PR_SI_ARCHITECTURE "ppc" 27 #elif defined(__arm__) 28 #define _PR_SI_ARCHITECTURE "arm" 29 #elif defined(__aarch64__) 30 #define _PR_SI_ARCHITECTURE "aarch64" 31 #else 32 #error "Unknown CPU architecture" 33 #endif 34 #define PR_DLL_SUFFIX ".dylib" 35 36 #define _PR_VMBASE 0x30000000 37 #define _PR_STACK_VMBASE 0x50000000 38 #define _MD_DEFAULT_STACK_SIZE 65536L 39 #define _MD_MMAP_FLAGS MAP_PRIVATE 40 41 #undef HAVE_STACK_GROWING_UP 42 #define HAVE_DLL 43 #define USE_DLFCN 44 #define _PR_HAVE_SOCKADDR_LEN 45 #define _PR_STAT_HAS_ST_ATIMESPEC 46 #define _PR_HAVE_LARGE_OFF_T 47 #define _PR_HAVE_SYSV_SEMAPHORES 48 #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY 49 50 #define _PR_INET6 51 /* 52 * I'd prefer to use getipnodebyname and getipnodebyaddr but the 53 * getipnodebyname(3) man page on Mac OS X 10.2 says they are not 54 * thread-safe. AI_V4MAPPED|AI_ADDRCONFIG doesn't work either. 55 */ 56 #define _PR_HAVE_GETHOSTBYNAME2 57 #define _PR_HAVE_GETADDRINFO 58 /* 59 * On Mac OS X 10.2, gethostbyaddr fails with h_errno=NO_RECOVERY 60 * if you pass an IPv4-mapped IPv6 address to it. 61 */ 62 #define _PR_GHBA_DISALLOW_V4MAPPED 63 #ifdef __APPLE__ 64 #if !defined(MAC_OS_X_VERSION_10_3) || \ 65 MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_3 66 /* 67 * socket(AF_INET6) fails with EPROTONOSUPPORT on Mac OS X 10.1. 68 * IPv6 under OS X 10.2 and below is not complete (see bug 222031). 69 */ 70 #define _PR_INET6_PROBE 71 #endif /* DT < 10.3 */ 72 #if defined(MAC_OS_X_VERSION_10_2) && \ 73 MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_2 74 /* Mac OS X 10.2 has inet_ntop and inet_pton. */ 75 #define _PR_HAVE_INET_NTOP 76 #endif /* DT >= 10.2 */ 77 #endif /* __APPLE__ */ 78 #define _PR_IPV6_V6ONLY_PROBE 79 /* The IPV6_V6ONLY socket option is not defined on Mac OS X 10.1. */ 80 #ifndef IPV6_V6ONLY 81 #define IPV6_V6ONLY 27 82 #endif 83 84 #ifdef __ppc__ 85 #define _PR_HAVE_ATOMIC_OPS 86 #define _MD_INIT_ATOMIC() 87 extern PRInt32 _PR_DarwinPPC_AtomicIncrement(PRInt32 *val); 88 #define _MD_ATOMIC_INCREMENT(val) _PR_DarwinPPC_AtomicIncrement(val) 89 extern PRInt32 _PR_DarwinPPC_AtomicDecrement(PRInt32 *val); 90 #define _MD_ATOMIC_DECREMENT(val) _PR_DarwinPPC_AtomicDecrement(val) 91 extern PRInt32 _PR_DarwinPPC_AtomicSet(PRInt32 *val, PRInt32 newval); 92 #define _MD_ATOMIC_SET(val, newval) _PR_DarwinPPC_AtomicSet(val, newval) 93 extern PRInt32 _PR_DarwinPPC_AtomicAdd(PRInt32 *ptr, PRInt32 val); 94 #define _MD_ATOMIC_ADD(ptr, val) _PR_DarwinPPC_AtomicAdd(ptr, val) 95 #endif /* __ppc__ */ 96 97 #ifdef __i386__ 98 #define _PR_HAVE_ATOMIC_OPS 99 #define _MD_INIT_ATOMIC() 100 extern PRInt32 _PR_Darwin_x86_AtomicIncrement(PRInt32 *val); 101 #define _MD_ATOMIC_INCREMENT(val) _PR_Darwin_x86_AtomicIncrement(val) 102 extern PRInt32 _PR_Darwin_x86_AtomicDecrement(PRInt32 *val); 103 #define _MD_ATOMIC_DECREMENT(val) _PR_Darwin_x86_AtomicDecrement(val) 104 extern PRInt32 _PR_Darwin_x86_AtomicSet(PRInt32 *val, PRInt32 newval); 105 #define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_AtomicSet(val, newval) 106 extern PRInt32 _PR_Darwin_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val); 107 #define _MD_ATOMIC_ADD(ptr, val) _PR_Darwin_x86_AtomicAdd(ptr, val) 108 #endif /* __i386__ */ 109 110 #ifdef __x86_64__ 111 #define _PR_HAVE_ATOMIC_OPS 112 #define _MD_INIT_ATOMIC() 113 extern PRInt32 _PR_Darwin_x86_64_AtomicIncrement(PRInt32 *val); 114 #define _MD_ATOMIC_INCREMENT(val) _PR_Darwin_x86_64_AtomicIncrement(val) 115 extern PRInt32 _PR_Darwin_x86_64_AtomicDecrement(PRInt32 *val); 116 #define _MD_ATOMIC_DECREMENT(val) _PR_Darwin_x86_64_AtomicDecrement(val) 117 extern PRInt32 _PR_Darwin_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval); 118 #define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_64_AtomicSet(val, newval) 119 extern PRInt32 _PR_Darwin_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val); 120 #define _MD_ATOMIC_ADD(ptr, val) _PR_Darwin_x86_64_AtomicAdd(ptr, val) 121 #endif /* __x86_64__ */ 122 123 #ifdef __aarch64__ 124 #define _PR_HAVE_ATOMIC_OPS 125 #define _MD_INIT_ATOMIC() 126 #define _MD_ATOMIC_INCREMENT(val) __sync_add_and_fetch(val, 1) 127 #define _MD_ATOMIC_DECREMENT(val) __sync_sub_and_fetch(val, 1) 128 #define _MD_ATOMIC_SET(val, newval) __sync_lock_test_and_set(val, newval) 129 #define _MD_ATOMIC_ADD(ptr, val) __sync_add_and_fetch(ptr, val) 130 #endif /* __aarch64__ */ 131 132 #if defined(__arm__) 133 #define _PR_HAVE_ATOMIC_OPS 134 #define _MD_INIT_ATOMIC() 135 #define _MD_ATOMIC_INCREMENT(val) OSAtomicIncrement32(val) 136 #define _MD_ATOMIC_DECREMENT(val) OSAtomicDecrement32(val) 137 static inline PRInt32 _MD_ATOMIC_SET(PRInt32 *val, PRInt32 newval) 138 { 139 PRInt32 oldval; 140 do { 141 oldval = *val; 142 } while (!OSAtomicCompareAndSwap32(oldval, newval, val)); 143 return oldval; 144 } 145 #define _MD_ATOMIC_ADD(ptr, val) OSAtomicAdd32(val, ptr) 146 #endif /* __arm__ */ 147 148 #define USE_SETJMP 149 150 #if !defined(_PR_PTHREADS) 151 152 #include <setjmp.h> 153 154 #define PR_CONTEXT_TYPE jmp_buf 155 156 #define CONTEXT(_th) ((_th)->md.context) 157 #define _MD_GET_SP(_th) (((struct sigcontext *) (_th)->md.context)->sc_onstack) 158 #define PR_NUM_GCREGS _JBLEN 159 160 /* 161 ** Initialize a thread context to run "_main()" when started 162 */ 163 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ 164 { \ 165 *status = PR_TRUE; \ 166 if (setjmp(CONTEXT(_thread))) { \ 167 _main(); \ 168 } \ 169 _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \ 170 } 171 172 #define _MD_SWITCH_CONTEXT(_thread) \ 173 if (!setjmp(CONTEXT(_thread))) { \ 174 (_thread)->md.errcode = errno; \ 175 _PR_Schedule(); \ 176 } 177 178 /* 179 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT 180 */ 181 #define _MD_RESTORE_CONTEXT(_thread) \ 182 { \ 183 errno = (_thread)->md.errcode; \ 184 _MD_SET_CURRENT_THREAD(_thread); \ 185 longjmp(CONTEXT(_thread), 1); \ 186 } 187 188 /* Machine-dependent (MD) data structures */ 189 190 struct _MDThread { 191 PR_CONTEXT_TYPE context; 192 int id; 193 int errcode; 194 }; 195 196 struct _MDThreadStack { 197 PRInt8 notused; 198 }; 199 200 struct _MDLock { 201 PRInt8 notused; 202 }; 203 204 struct _MDSemaphore { 205 PRInt8 notused; 206 }; 207 208 struct _MDCVar { 209 PRInt8 notused; 210 }; 211 212 struct _MDSegment { 213 PRInt8 notused; 214 }; 215 216 /* 217 * md-specific cpu structure field 218 */ 219 #define _PR_MD_MAX_OSFD FD_SETSIZE 220 221 struct _MDCPU_Unix { 222 PRCList ioQ; 223 PRUint32 ioq_timeout; 224 PRInt32 ioq_max_osfd; 225 PRInt32 ioq_osfd_cnt; 226 #ifndef _PR_USE_POLL 227 fd_set fd_read_set, fd_write_set, fd_exception_set; 228 PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD], 229 fd_exception_cnt[_PR_MD_MAX_OSFD]; 230 #else 231 struct pollfd *ioq_pollfds; 232 int ioq_pollfds_size; 233 #endif /* _PR_USE_POLL */ 234 }; 235 236 #define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ) 237 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu)) 238 #define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set) 239 #define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt) 240 #define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set) 241 #define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt) 242 #define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set) 243 #define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt) 244 #define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout) 245 #define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd) 246 #define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt) 247 #define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds) 248 #define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size) 249 250 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32 251 252 struct _MDCPU { 253 struct _MDCPU_Unix md_unix; 254 }; 255 256 #define _MD_INIT_LOCKS() 257 #define _MD_NEW_LOCK(lock) PR_SUCCESS 258 #define _MD_FREE_LOCK(lock) 259 #define _MD_LOCK(lock) 260 #define _MD_UNLOCK(lock) 261 #define _MD_INIT_IO() 262 #define _MD_IOQ_LOCK() 263 #define _MD_IOQ_UNLOCK() 264 265 extern PRStatus _MD_InitializeThread(PRThread *thread); 266 267 #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu) 268 #define _MD_INIT_THREAD _MD_InitializeThread 269 #define _MD_EXIT_THREAD(thread) 270 #define _MD_SUSPEND_THREAD(thread) _MD_suspend_thread 271 #define _MD_RESUME_THREAD(thread) _MD_resume_thread 272 #define _MD_CLEAN_THREAD(_thread) 273 274 extern PRStatus _MD_CREATE_THREAD( 275 PRThread *thread, 276 void (*start) (void *), 277 PRThreadPriority priority, 278 PRThreadScope scope, 279 PRThreadState state, 280 PRUint32 stackSize); 281 extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri); 282 extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout); 283 extern PRStatus _MD_WAKEUP_WAITER(PRThread *); 284 extern void _MD_YIELD(void); 285 286 #endif /* ! _PR_PTHREADS */ 287 288 #define _MD_EARLY_INIT _MD_EarlyInit 289 #define _MD_FINAL_INIT _PR_UnixInit 290 #define _MD_INTERVAL_INIT _PR_Mach_IntervalInit 291 #define _MD_GET_INTERVAL _PR_Mach_GetInterval 292 #define _MD_INTERVAL_PER_SEC _PR_Mach_TicksPerSecond 293 294 extern void _MD_EarlyInit(void); 295 extern void _PR_Mach_IntervalInit(void); 296 extern PRIntervalTime _PR_Mach_GetInterval(void); 297 extern PRIntervalTime _PR_Mach_TicksPerSecond(void); 298 299 /* 300 * We wrapped the select() call. _MD_SELECT refers to the built-in, 301 * unwrapped version. 302 */ 303 #define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv) 304 305 /* For writev() */ 306 #include <sys/uio.h> 307 308 #endif /* nspr_darwin_defs_h___ */