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_riscos.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): Peter Naulls <peter@chocky.org>
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
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
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
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
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_riscos_defs_h___
00039 #define nspr_riscos_defs_h___
00040 
00041 /*
00042 ** Internal configuration macros
00043 */
00044 #define PR_LINKER_ARCH             "riscos"
00045 #define _PR_SI_SYSNAME             "RISCOS"
00046 #define _PR_SI_ARCHITECTURE "arm"
00047 #define PR_DLL_SUFFIX              ".a"
00048 
00049 #define _PR_POLL_AVAILABLE
00050 #define _PR_USE_POLL
00051 #define _PR_HAVE_SOCKADDR_LEN
00052 #undef HAVE_BSD_FLOCK
00053 #define _PR_NO_LARGE_FILES
00054 #define _PR_STAT_HAS_ONLY_ST_ATIME
00055 #define _PR_HAVE_POSIX_SEMAPHORES
00056 
00057 #include <sys/select.h>
00058 #include <sys/poll.h>
00059 #include <kernel.h>
00060 
00061 
00062 #undef  HAVE_STACK_GROWING_UP
00063 #undef  HAVE_DLL
00064 #undef  USE_DLFCN
00065 #define NEED_STRFTIME_LOCK
00066 #define NEED_TIME_R
00067 #define PT_NO_SIGTIMEDWAIT
00068 
00069 #ifndef HAVE_STRERROR
00070 #define HAVE_STRERROR
00071 #endif
00072 
00073 #define USE_SETJMP
00074 
00075 #include <setjmp.h>
00076 
00077 #define _SETJMP                    setjmp
00078 #define _LONGJMP            longjmp
00079 #define _PR_CONTEXT_TYPE    jmp_buf
00080 #define _PR_NUM_GCREGS             _JBLEN
00081 #define _MD_GET_SP(_t)             (_t)->md.context[7]
00082 
00083 #define CONTEXT(_th)        ((_th)->md.context)
00084 
00085 
00086 /*
00087 ** Initialize the thread context preparing it to execute _main.
00088 */
00089 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)   \
00090 {                                                \
00091     *status = PR_TRUE;                                  \
00092     if(_SETJMP(CONTEXT(_thread))) (*_main)();           \
00093     _MD_GET_SP(_thread) = (int) ((_sp) - 128);          \
00094 }
00095 
00096 #define _MD_SWITCH_CONTEXT(_thread)       \
00097     if (!_SETJMP(CONTEXT(_thread))) {     \
00098        (_thread)->md.errcode = errno;     \
00099        _PR_Schedule();                    \
00100     }
00101 
00102 /*
00103 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
00104 */
00105 #define _MD_RESTORE_CONTEXT(_thread)      \
00106 {                                  \
00107     errno = (_thread)->md.errcode; \
00108     _MD_SET_CURRENT_THREAD(_thread);      \
00109     _LONGJMP(CONTEXT(_thread), 1); \
00110 }
00111 
00112 /*
00113 ** Machine-dependent (MD) data structures.
00114 */
00115 struct _MDThread {
00116     _PR_CONTEXT_TYPE context;
00117     int id;
00118     int errcode;
00119 };
00120 
00121 struct _MDThreadStack {
00122     PRInt8 notused;
00123 };
00124 
00125 struct _MDLock {
00126     PRInt8 notused;
00127 };
00128 
00129 struct _MDSemaphore {
00130     PRInt8 notused;
00131 };
00132 
00133 struct _MDCVar {
00134     PRInt8 notused;
00135 };
00136 
00137 struct _MDSegment {
00138     PRInt8 notused;
00139 };
00140 
00141 /*
00142 ** md-specific cpu structure field
00143 */
00144 #define _PR_MD_MAX_OSFD            FD_SETSIZE
00145 
00146 struct _MDCPU_Unix {
00147     PRCList ioQ;
00148     PRUint32 ioq_timeout;
00149     PRInt32 ioq_max_osfd;
00150     PRInt32 ioq_osfd_cnt;
00151 #ifndef _PR_USE_POLL
00152     fd_set fd_read_set, fd_write_set, fd_exception_set;
00153     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD], fd_write_cnt[_PR_MD_MAX_OSFD], fd_exception_cnt[_PR_MD_MAX_OSFD];
00154 #else
00155     struct pollfd *ioq_pollfds;
00156     int ioq_pollfds_size;
00157 #endif
00158 };
00159 
00160 #define _PR_IOQ(_cpu)       /*     */     ((_cpu)->md.md_unix.ioQ)
00161 #define _PR_ADD_TO_IOQ(_pq, _cpu)  PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
00162 #define _PR_FD_READ_SET(_cpu)             ((_cpu)->md.md_unix.fd_read_set)
00163 #define _PR_FD_READ_CNT(_cpu)             ((_cpu)->md.md_unix.fd_read_cnt)
00164 #define _PR_FD_WRITE_SET(_cpu)            ((_cpu)->md.md_unix.fd_write_set)
00165 #define _PR_FD_WRITE_CNT(_cpu)            ((_cpu)->md.md_unix.fd_write_cnt)
00166 #define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set)
00167 #define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt)
00168 #define _PR_IOQ_TIMEOUT(_cpu)             ((_cpu)->md.md_unix.ioq_timeout)
00169 #define _PR_IOQ_MAX_OSFD(_cpu)            ((_cpu)->md.md_unix.ioq_max_osfd)
00170 #define _PR_IOQ_OSFD_CNT(_cpu)            ((_cpu)->md.md_unix.ioq_osfd_cnt)
00171 #define _PR_IOQ_POLLFDS(_cpu)             ((_cpu)->md.md_unix.ioq_pollfds)
00172 #define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size)
00173 
00174 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)    32
00175 
00176 struct _MDCPU {
00177        struct _MDCPU_Unix md_unix;
00178 };
00179 
00180 #define _MD_INIT_LOCKS()
00181 #define _MD_NEW_LOCK(lock)         PR_SUCCESS
00182 #define _MD_FREE_LOCK(lock)
00183 #define _MD_LOCK(lock)
00184 #define _MD_UNLOCK(lock)
00185 #define _MD_INIT_IO()
00186 #define _MD_IOQ_LOCK()
00187 #define _MD_IOQ_UNLOCK()
00188 
00189 #define _MD_GET_INTERVAL           _PR_UNIX_GetInterval
00190 #define _MD_INTERVAL_PER_SEC              _PR_UNIX_TicksPerSecond
00191 #define _MD_EARLY_INIT                    _MD_EarlyInit
00192 #define _MD_FINAL_INIT                    _PR_UnixInit
00193 #define _MD_INIT_RUNNING_CPU(cpu)  _MD_unix_init_running_cpu(cpu)
00194 #define _MD_INIT_THREAD                   _MD_InitializeThread
00195 #define _MD_EXIT_THREAD(thread)
00196 #define       _MD_SUSPEND_THREAD(thread)
00197 #define       _MD_RESUME_THREAD(thread)
00198 #define _MD_CLEAN_THREAD(_thread)
00199 
00200 /*
00201 ** We wrapped the select() call.  _MD_SELECT refers to the built-in,
00202 ** unwrapped version.
00203 */
00204 #include <sys/time.h>
00205 #include <sys/types.h>
00206 #include <sys/select.h>
00207 #define _MD_SELECT          select
00208 
00209 #endif /* nspr_riscos_defs_h___ */