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_dgux.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998-2000
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
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00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
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00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #ifndef nspr_dgux_defs_h___
00039 #define nspr_dgux_defs_h___
00040 
00041 /*
00042  * Internal configuration macros
00043  */
00044 
00045 #define PR_LINKER_ARCH      "dgux"
00046 #define _PR_SI_SYSNAME             "DGUX"
00047 #define _PR_SI_ARCHITECTURE "x86"
00048 #define PR_DLL_SUFFIX              ".so"
00049 
00050 #define _PR_VMBASE          0x30000000
00051 #define _PR_STACK_VMBASE    0x50000000
00052 #define _MD_DEFAULT_STACK_SIZE     65536L
00053 #define _MD_MMAP_FLAGS          MAP_PRIVATE
00054 
00055 #ifndef       HAVE_WEAK_IO_SYMBOLS
00056 #define       HAVE_WEAK_IO_SYMBOLS
00057 #endif
00058 
00059 #undef  HAVE_STACK_GROWING_UP
00060 #define HAVE_NETCONFIG
00061 #define       HAVE_DLL
00062 #define       USE_DLFCN
00063 #define NEED_STRFTIME_LOCK
00064 #define NEED_TIME_R
00065 #define _PR_NEED_STRCASECMP
00066 #define _PR_POLL_AVAILABLE
00067 #define _PR_USE_POLL
00068 #define _PR_NO_LARGE_FILES
00069 #define _PR_STAT_HAS_ONLY_ST_ATIME
00070 
00071 #define USE_SETJMP
00072 
00073 #include <setjmp.h>
00074 
00075 #define _SETJMP setjmp
00076 #define _LONGJMP longjmp
00077 #define _PR_CONTEXT_TYPE         jmp_buf
00078 #define _MD_GET_SP(_t)           (_t)->md.context[4]
00079 #define _PR_NUM_GCREGS      _JBLEN
00080 
00081 #define CONTEXT(_th) ((_th)->md.context)
00082 
00083 /*
00084 ** Initialize the thread context preparing it to execute _main.
00085 */
00086 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
00087 {                                                         \
00088     *status = PR_TRUE; \
00089     if(_SETJMP(CONTEXT(_thread))) (*_main)(); \
00090     _MD_GET_SP(_thread) = (int) ((_sp) - 128); \
00091 }
00092 
00093 #define _MD_SWITCH_CONTEXT(_thread)  \
00094     if (!_SETJMP(CONTEXT(_thread))) { \
00095        (_thread)->md.errcode = errno;  \
00096        _PR_Schedule();                  \
00097     }
00098 
00099 /*
00100 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
00101 */
00102 #define _MD_RESTORE_CONTEXT(_thread) \
00103 {                                \
00104     errno = (_thread)->md.errcode;      \
00105     _MD_SET_CURRENT_THREAD(_thread); \
00106     _LONGJMP(CONTEXT(_thread), 1);    \
00107 }
00108 
00109 /* Machine-dependent (MD) data structures.
00110  * Don't use SVR4 native threads (yet). 
00111  */
00112 
00113 struct _MDThread {
00114     _PR_CONTEXT_TYPE context;
00115     int id;
00116     int errcode;
00117 };
00118 
00119 struct _MDThreadStack {
00120     PRInt8 notused;
00121 };
00122 
00123 struct _MDLock {
00124     PRInt8 notused;
00125 };
00126 
00127 struct _MDSemaphore {
00128     PRInt8 notused;
00129 };
00130 
00131 struct _MDCVar {
00132     PRInt8 notused;
00133 };
00134 
00135 struct _MDSegment {
00136     PRInt8 notused;
00137 };
00138 
00139 /*
00140  * md-specific cpu structure field
00141  */
00142 #define _PR_MD_MAX_OSFD FD_SETSIZE
00143 
00144 struct _MDCPU_Unix {
00145     PRCList ioQ;
00146     PRUint32 ioq_timeout;
00147     PRInt32 ioq_max_osfd;
00148     PRInt32 ioq_osfd_cnt;
00149 #ifndef _PR_USE_POLL
00150     fd_set fd_read_set, fd_write_set, fd_exception_set;
00151     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
00152                 fd_exception_cnt[_PR_MD_MAX_OSFD];
00153 #else
00154     struct pollfd *ioq_pollfds;
00155     int ioq_pollfds_size;
00156 #endif  /* _PR_USE_POLL */
00157 };
00158 
00159 #define _PR_IOQ(_cpu)               ((_cpu)->md.md_unix.ioQ)
00160 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
00161 #define _PR_FD_READ_SET(_cpu)       ((_cpu)->md.md_unix.fd_read_set)
00162 #define _PR_FD_READ_CNT(_cpu)       ((_cpu)->md.md_unix.fd_read_cnt)
00163 #define _PR_FD_WRITE_SET(_cpu)      ((_cpu)->md.md_unix.fd_write_set)
00164 #define _PR_FD_WRITE_CNT(_cpu)      ((_cpu)->md.md_unix.fd_write_cnt)
00165 #define _PR_FD_EXCEPTION_SET(_cpu)  ((_cpu)->md.md_unix.fd_exception_set)
00166 #define _PR_FD_EXCEPTION_CNT(_cpu)  ((_cpu)->md.md_unix.fd_exception_cnt)
00167 #define _PR_IOQ_TIMEOUT(_cpu)       ((_cpu)->md.md_unix.ioq_timeout)
00168 #define _PR_IOQ_MAX_OSFD(_cpu)      ((_cpu)->md.md_unix.ioq_max_osfd)
00169 #define _PR_IOQ_OSFD_CNT(_cpu)      ((_cpu)->md.md_unix.ioq_osfd_cnt)
00170 #define _PR_IOQ_POLLFDS(_cpu)       ((_cpu)->md.md_unix.ioq_pollfds)
00171 #define _PR_IOQ_POLLFDS_SIZE(_cpu)  ((_cpu)->md.md_unix.ioq_pollfds_size)
00172 
00173 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)  32
00174 
00175 struct _MDCPU {
00176     struct _MDCPU_Unix md_unix;
00177 };
00178 
00179 #define _MD_INIT_LOCKS()
00180 #define _MD_NEW_LOCK(lock) PR_SUCCESS
00181 #define _MD_FREE_LOCK(lock)
00182 #define _MD_LOCK(lock)
00183 #define _MD_UNLOCK(lock)
00184 #define _MD_INIT_IO()
00185 #define _MD_IOQ_LOCK()
00186 #define _MD_IOQ_UNLOCK()
00187 
00188 /*
00189  * The following are copied from _sunos.h, _aix.h.  This means
00190  * some of them should probably be moved into _unixos.h.  But
00191  * _irix.h seems to be quite different in regard to these macros.
00192  */
00193 #define _MD_GET_INTERVAL                  _PR_UNIX_GetInterval
00194 #define _MD_INTERVAL_PER_SEC              _PR_UNIX_TicksPerSecond
00195 
00196 #define _MD_EARLY_INIT             _MD_EarlyInit
00197 #define _MD_FINAL_INIT             _PR_UnixInit
00198 #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
00199 #define _MD_INIT_THREAD         _MD_InitializeThread
00200 #define _MD_EXIT_THREAD(thread)
00201 #define       _MD_SUSPEND_THREAD(thread)
00202 #define       _MD_RESUME_THREAD(thread)
00203 #define _MD_CLEAN_THREAD(_thread)
00204 
00205 /*
00206  * We wrapped the select() call.  _MD_SELECT refers to the built-in,
00207  * unwrapped version.
00208  */
00209 #include <unistd.h>
00210 #include <sys/types.h>
00211 #include <sys/time.h>
00212 extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
00213        fd_set *execptfds, struct timeval *timeout);
00214 #define _MD_SELECT _select
00215 
00216 #define _MD_POLL _poll
00217 #include <poll.h>
00218 #include <stropts.h>
00219 extern int _poll(struct pollfd *fds, unsigned long nfds, int timeout);
00220 
00221 #endif /* nspr_dgux_defs_h___ */