nsprpub/pr/include/md/_riscos.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): Peter Naulls <peter@chocky.org>
  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
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the MPL, indicate your
  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  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_riscos_defs_h___
  39 #define nspr_riscos_defs_h___
  40
  41 /*
  42 ** Internal configuration macros
  43 */
  44 #define PR_LINKER_ARCH          "riscos"
  45 #define _PR_SI_SYSNAME          "RISCOS"
  46 #define _PR_SI_ARCHITECTURE     "arm"
  47 #define PR_DLL_SUFFIX           ".a"
  48
  49 #define _PR_POLL_AVAILABLE
  50 #define _PR_USE_POLL
  51 #define _PR_HAVE_SOCKADDR_LEN
  52 #undef HAVE_BSD_FLOCK
  53 #define _PR_NO_LARGE_FILES
  54 #define _PR_STAT_HAS_ONLY_ST_ATIME
  55 #define _PR_HAVE_POSIX_SEMAPHORES
  56
  57 #include <sys/select.h>
  58 #include <sys/poll.h>
  59 #include <kernel.h>
  60
  61
  62 #undef  HAVE_STACK_GROWING_UP
  63 #undef  HAVE_DLL
  64 #undef  USE_DLFCN
  65 #define NEED_STRFTIME_LOCK
  66 #define NEED_TIME_R
  67 #define PT_NO_SIGTIMEDWAIT
  68
  69 #ifndef HAVE_STRERROR
  70 #define HAVE_STRERROR
  71 #endif
  72
  73 #define USE_SETJMP
  74
  75 #include <setjmp.h>
  76
  77 #define _SETJMP                 setjmp
  78 #define _LONGJMP                longjmp
  79 #define _PR_CONTEXT_TYPE        jmp_buf
  80 #define _PR_NUM_GCREGS          _JBLEN
  81 #define _MD_GET_SP(_t)          (_t)->md.context[7]
  82
  83 #define CONTEXT(_th)            ((_th)->md.context)
  84
  85
  86 /*
  87 ** Initialize the thread context preparing it to execute _main.
  88 */
  89 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)   \
  90 {                                                       \
  91     *status = PR_TRUE;                                  \
  92     if(_SETJMP(CONTEXT(_thread))) (*_main)();           \
  93     _MD_GET_SP(_thread) = (int) ((_sp) - 128);          \
  94 }
  95
  96 #define _MD_SWITCH_CONTEXT(_thread)     \
  97     if (!_SETJMP(CONTEXT(_thread))) {   \
  98         (_thread)->md.errcode = errno;  \
  99         _PR_Schedule();                 \
 100     }
 101
 102 /*
 103 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
 104 */
 105 #define _MD_RESTORE_CONTEXT(_thread)    \
 106 {                                       \
 107     errno = (_thread)->md.errcode;      \
 108     _MD_SET_CURRENT_THREAD(_thread);    \
 109     _LONGJMP(CONTEXT(_thread), 1);      \
 110 }
 111
 112 /*
 113 ** Machine-dependent (MD) data structures.
 114 */
 115 struct _MDThread {
 116     _PR_CONTEXT_TYPE context;
 117     int id;
 118     int errcode;
 119 };
 120
 121 struct _MDThreadStack {
 122     PRInt8 notused;
 123 };
 124
 125 struct _MDLock {
 126     PRInt8 notused;
 127 };
 128
 129 struct _MDSemaphore {
 130     PRInt8 notused;
 131 };
 132
 133 struct _MDCVar {
 134     PRInt8 notused;
 135 };
 136
 137 struct _MDSegment {
 138     PRInt8 notused;
 139 };
 140
 141 /*
 142 ** md-specific cpu structure field
 143 */
 144 #define _PR_MD_MAX_OSFD         FD_SETSIZE
 145
 146 struct _MDCPU_Unix {
 147     PRCList ioQ;
 148     PRUint32 ioq_timeout;
 149     PRInt32 ioq_max_osfd;
 150     PRInt32 ioq_osfd_cnt;
 151 #ifndef _PR_USE_POLL
 152     fd_set fd_read_set, fd_write_set, fd_exception_set;
 153     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD], fd_write_cnt[_PR_MD_MAX_OSFD], fd_exception_cnt[_PR_MD_MAX_OSFD];
 154 #else
 155     struct pollfd *ioq_pollfds;
 156     int ioq_pollfds_size;
 157 #endif
 158 };
 159
 160 #define _PR_IOQ(_cpu)   /*      */      ((_cpu)->md.md_unix.ioQ)
 161 #define _PR_ADD_TO_IOQ(_pq, _cpu)       PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
 162 #define _PR_FD_READ_SET(_cpu)           ((_cpu)->md.md_unix.fd_read_set)
 163 #define _PR_FD_READ_CNT(_cpu)           ((_cpu)->md.md_unix.fd_read_cnt)
 164 #define _PR_FD_WRITE_SET(_cpu)          ((_cpu)->md.md_unix.fd_write_set)
 165 #define _PR_FD_WRITE_CNT(_cpu)          ((_cpu)->md.md_unix.fd_write_cnt)
 166 #define _PR_FD_EXCEPTION_SET(_cpu)      ((_cpu)->md.md_unix.fd_exception_set)
 167 #define _PR_FD_EXCEPTION_CNT(_cpu)      ((_cpu)->md.md_unix.fd_exception_cnt)
 168 #define _PR_IOQ_TIMEOUT(_cpu)           ((_cpu)->md.md_unix.ioq_timeout)
 169 #define _PR_IOQ_MAX_OSFD(_cpu)          ((_cpu)->md.md_unix.ioq_max_osfd)
 170 #define _PR_IOQ_OSFD_CNT(_cpu)          ((_cpu)->md.md_unix.ioq_osfd_cnt)
 171 #define _PR_IOQ_POLLFDS(_cpu)           ((_cpu)->md.md_unix.ioq_pollfds)
 172 #define _PR_IOQ_POLLFDS_SIZE(_cpu)      ((_cpu)->md.md_unix.ioq_pollfds_size)
 173
 174 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)  32
 175
 176 struct _MDCPU {
 177         struct _MDCPU_Unix md_unix;
 178 };
 179
 180 #define _MD_INIT_LOCKS()
 181 #define _MD_NEW_LOCK(lock)              PR_SUCCESS
 182 #define _MD_FREE_LOCK(lock)
 183 #define _MD_LOCK(lock)
 184 #define _MD_UNLOCK(lock)
 185 #define _MD_INIT_IO()
 186 #define _MD_IOQ_LOCK()
 187 #define _MD_IOQ_UNLOCK()
 188
 189 #define _MD_GET_INTERVAL                _PR_UNIX_GetInterval
 190 #define _MD_INTERVAL_PER_SEC            _PR_UNIX_TicksPerSecond
 191 #define _MD_EARLY_INIT                  _MD_EarlyInit
 192 #define _MD_FINAL_INIT                  _PR_UnixInit
 193 #define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
 194 #define _MD_INIT_THREAD                 _MD_InitializeThread
 195 #define _MD_EXIT_THREAD(thread)
 196 #define _MD_SUSPEND_THREAD(thread)
 197 #define _MD_RESUME_THREAD(thread)
 198 #define _MD_CLEAN_THREAD(_thread)
 199
 200 /*
 201 ** We wrapped the select() call.  _MD_SELECT refers to the built-in,
 202 ** unwrapped version.
 203 */
 204 #include <sys/time.h>
 205 #include <sys/types.h>
 206 #include <sys/select.h>
 207 #define _MD_SELECT              select
 208
 209 #endif /* nspr_riscos_defs_h___ */