nsprpub/pr/include/md/_osf1.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is the Netscape Portable Runtime (NSPR).
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998-2000
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
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  31  * decision by deleting the provisions above and replace them with the notice
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  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #ifndef nspr_osf1_defs_h___
  39 #define nspr_osf1_defs_h___
  40
  41 /*
  42  * Internal configuration macros
  43  */
  44
  45 #define PR_LINKER_ARCH  "osf"
  46 #define _PR_SI_SYSNAME  "OSF"
  47 #define _PR_SI_ARCHITECTURE "alpha"
  48 #define PR_DLL_SUFFIX           ".so"
  49
  50 #define _PR_VMBASE              0x30000000
  51 #define _PR_STACK_VMBASE        0x50000000
  52 #define _MD_DEFAULT_STACK_SIZE  131072L
  53 #define _MD_MMAP_FLAGS          MAP_PRIVATE
  54
  55 #undef  HAVE_STACK_GROWING_UP
  56 #undef  HAVE_WEAK_IO_SYMBOLS
  57 #undef  HAVE_WEAK_MALLOC_SYMBOLS
  58 #define HAVE_DLL
  59 #define HAVE_BSD_FLOCK
  60
  61 #define NEED_TIME_R
  62 #define USE_DLFCN
  63
  64 #define _PR_POLL_AVAILABLE
  65 #define _PR_USE_POLL
  66 #define _PR_STAT_HAS_ONLY_ST_ATIME
  67 #define _PR_HAVE_LARGE_OFF_T
  68 #define _PR_HAVE_GETIPNODEBYNAME
  69 #define _PR_HAVE_GETIPNODEBYADDR
  70 #define _PR_HAVE_GETADDRINFO
  71 #define _PR_INET6_PROBE
  72 #ifdef _PR_INET6
  73 #define _PR_HAVE_INET_NTOP
  74 #else
  75 #define AF_INET6 26
  76 #ifndef AI_CANONNAME
  77 #define AI_CANONNAME 0x00000002
  78 struct addrinfo {
  79     int              ai_flags;
  80     int              ai_family;
  81     int              ai_socktype;
  82     int              ai_protocol;
  83     size_t           ai_addrlen;
  84     char            *ai_canonname;
  85     struct sockaddr *ai_addr;
  86     struct addrinfo *ai_next;
  87 };
  88 #endif
  89 #define AI_V4MAPPED 0x00000010
  90 #define AI_ALL      0x00000008
  91 #define AI_ADDRCONFIG 0x00000020
  92 #endif
  93 #define _PR_HAVE_POSIX_SEMAPHORES
  94 #define PR_HAVE_POSIX_NAMED_SHARED_MEMORY
  95
  96 #define USE_SETJMP
  97
  98 #include <setjmp.h>
  99
 100 /*
 101  * A jmp_buf is actually a struct sigcontext.  The sc_sp field of
 102  * struct sigcontext is the stack pointer.
 103  */
 104 #define _MD_GET_SP(_t) (((struct sigcontext *) (_t)->md.context)->sc_sp)
 105 #define PR_NUM_GCREGS _JBLEN
 106 #define CONTEXT(_th) ((_th)->md.context)
 107
 108 /*
 109 ** Initialize a thread context to run "_main()" when started
 110 */
 111 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)         \
 112 {                                                                         \
 113         *status = PR_TRUE;              \
 114     if (setjmp(CONTEXT(_thread))) {                             \
 115         (*_main)();                                             \
 116     }                                                           \
 117     _MD_GET_SP(_thread) = (long) ((_sp) - 64);                  \
 118     _MD_GET_SP(_thread) &= ~15;                                 \
 119 }
 120
 121 #define _MD_SWITCH_CONTEXT(_thread)  \
 122     if (!setjmp(CONTEXT(_thread))) { \
 123         (_thread)->md.errcode = errno;  \
 124         _PR_Schedule();              \
 125     }
 126
 127 /*
 128 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
 129 */
 130 #define _MD_RESTORE_CONTEXT(_thread) \
 131 {                                    \
 132     errno = (_thread)->md.errcode;     \
 133     _MD_SET_CURRENT_THREAD(_thread);    \
 134     longjmp(CONTEXT(_thread), 1);    \
 135 }
 136
 137 /* Machine-dependent (MD) data structures */
 138
 139 struct _MDThread {
 140     jmp_buf context;
 141     int id;
 142     int errcode;
 143 };
 144
 145 struct _MDThreadStack {
 146     PRInt8 notused;
 147 };
 148
 149 struct _MDLock {
 150     PRInt8 notused;
 151 };
 152
 153 struct _MDSemaphore {
 154     PRInt8 notused;
 155 };
 156
 157 struct _MDCVar {
 158     PRInt8 notused;
 159 };
 160
 161 struct _MDSegment {
 162     PRInt8 notused;
 163 };
 164
 165 /*
 166  * md-specific cpu structure field
 167  */
 168 #define _PR_MD_MAX_OSFD FD_SETSIZE
 169
 170 struct _MDCPU_Unix {
 171     PRCList ioQ;
 172     PRUint32 ioq_timeout;
 173     PRInt32 ioq_max_osfd;
 174     PRInt32 ioq_osfd_cnt;
 175 #ifndef _PR_USE_POLL
 176     fd_set fd_read_set, fd_write_set, fd_exception_set;
 177     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
 178                                 fd_exception_cnt[_PR_MD_MAX_OSFD];
 179 #else
 180         struct pollfd *ioq_pollfds;
 181         int ioq_pollfds_size;
 182 #endif  /* _PR_USE_POLL */
 183 };
 184
 185 #define _PR_IOQ(_cpu)                   ((_cpu)->md.md_unix.ioQ)
 186 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
 187 #define _PR_FD_READ_SET(_cpu)           ((_cpu)->md.md_unix.fd_read_set)
 188 #define _PR_FD_READ_CNT(_cpu)           ((_cpu)->md.md_unix.fd_read_cnt)
 189 #define _PR_FD_WRITE_SET(_cpu)          ((_cpu)->md.md_unix.fd_write_set)
 190 #define _PR_FD_WRITE_CNT(_cpu)          ((_cpu)->md.md_unix.fd_write_cnt)
 191 #define _PR_FD_EXCEPTION_SET(_cpu)      ((_cpu)->md.md_unix.fd_exception_set)
 192 #define _PR_FD_EXCEPTION_CNT(_cpu)      ((_cpu)->md.md_unix.fd_exception_cnt)
 193 #define _PR_IOQ_TIMEOUT(_cpu)           ((_cpu)->md.md_unix.ioq_timeout)
 194 #define _PR_IOQ_MAX_OSFD(_cpu)          ((_cpu)->md.md_unix.ioq_max_osfd)
 195 #define _PR_IOQ_OSFD_CNT(_cpu)          ((_cpu)->md.md_unix.ioq_osfd_cnt)
 196 #define _PR_IOQ_POLLFDS(_cpu)           ((_cpu)->md.md_unix.ioq_pollfds)
 197 #define _PR_IOQ_POLLFDS_SIZE(_cpu)      ((_cpu)->md.md_unix.ioq_pollfds_size)
 198
 199 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)  32
 200
 201 struct _MDCPU {
 202         struct _MDCPU_Unix md_unix;
 203 };
 204
 205 #ifndef _PR_PTHREADS
 206 #define _MD_INIT_LOCKS()
 207 #endif
 208 #define _MD_NEW_LOCK(lock) PR_SUCCESS
 209 #define _MD_FREE_LOCK(lock)
 210 #define _MD_LOCK(lock)
 211 #define _MD_UNLOCK(lock)
 212 #define _MD_INIT_IO()
 213 #define _MD_IOQ_LOCK()
 214 #define _MD_IOQ_UNLOCK()
 215
 216 /*
 217  * The following are copied from _sunos.h, _aix.h.  This means
 218  * some of them should probably be moved into _unixos.h.  But
 219  * _irix.h seems to be quite different in regard to these macros.
 220  */
 221 #define _MD_GET_INTERVAL                  _PR_UNIX_GetInterval
 222 #define _MD_INTERVAL_PER_SEC              _PR_UNIX_TicksPerSecond
 223
 224 #define _MD_EARLY_INIT          _MD_EarlyInit
 225 #define _MD_FINAL_INIT          _PR_UnixInit
 226 #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
 227 #define _MD_INIT_THREAD         _MD_InitializeThread
 228 #define _MD_EXIT_THREAD(thread)
 229 #define _MD_SUSPEND_THREAD(thread)
 230 #define _MD_RESUME_THREAD(thread)
 231 #define _MD_CLEAN_THREAD(_thread)
 232
 233 /* The following defines unwrapped versions of select() and poll(). */
 234 #include <sys/time.h>
 235 extern int __select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
 236 #define _MD_SELECT              __select
 237
 238 #include <sys/poll.h>
 239 #define _MD_POLL __poll
 240 extern int __poll(struct pollfd filedes[], unsigned int nfds, int timeout);
 241
 242 /*
 243  * Atomic operations
 244  */
 245 #ifdef OSF1_HAVE_MACHINE_BUILTINS_H
 246 #include <machine/builtins.h>
 247 #define _PR_HAVE_ATOMIC_OPS
 248 #define _MD_INIT_ATOMIC()
 249 #define _MD_ATOMIC_INCREMENT(val) (__ATOMIC_INCREMENT_LONG(val) + 1)
 250 #define _MD_ATOMIC_ADD(ptr, val)  (__ATOMIC_ADD_LONG(ptr, val) + val)
 251 #define _MD_ATOMIC_DECREMENT(val) (__ATOMIC_DECREMENT_LONG(val) - 1)
 252 #define _MD_ATOMIC_SET(val, newval) __ATOMIC_EXCH_LONG(val, newval)
 253 #endif /* OSF1_HAVE_MACHINE_BUILTINS_H */
 254
 255 #endif /* nspr_osf1_defs_h___ */