nsprpub/pr/include/md/_sunos4.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
  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_sunos_defs_h___
  39 #define nspr_sunos_defs_h___
  40
  41 #include "md/sunos4.h"
  42
  43 /* On SunOS 4, memset is declared in memory.h */
  44 #include <memory.h>
  45 #include <errno.h>
  46 #include <sys/syscall.h>
  47
  48 /*
  49  * Internal configuration macros
  50  */
  51
  52 #define PR_LINKER_ARCH  "sunos"
  53 #define _PR_SI_SYSNAME  "SUNOS"
  54 #define _PR_SI_ARCHITECTURE "sparc"
  55 #define PR_DLL_SUFFIX           ".so.1.0"
  56
  57 /*
  58 ** For sunos type machines, don't specify an address because the
  59 ** NetBSD/SPARC O.S. does the wrong thing.
  60 */
  61 #define _PR_VMBASE              0x30000000
  62 #define _PR_STACK_VMBASE        0x50000000
  63 #define _MD_DEFAULT_STACK_SIZE  65536L
  64 #define _MD_MMAP_FLAGS          MAP_PRIVATE
  65
  66 #undef  HAVE_STACK_GROWING_UP
  67 #undef  HAVE_WEAK_IO_SYMBOLS
  68 #undef  HAVE_WEAK_MALLOC_SYMBOLS
  69 #define HAVE_DLL
  70 #define USE_DLFCN
  71 #define NEED_STRFTIME_LOCK
  72 #define NEED_TIME_R
  73 #define HAVE_BSD_FLOCK
  74 #define _PR_NO_LARGE_FILES
  75 #define _PR_STAT_HAS_ONLY_ST_ATIME
  76
  77 #define _MD_GET_INTERVAL                  _PR_UNIX_GetInterval
  78 #define _MD_INTERVAL_PER_SEC              _PR_UNIX_TicksPerSecond
  79
  80 #define USE_SETJMP
  81
  82 #include <setjmp.h>
  83
  84 #define _MD_GET_SP(_t)    (_t)->md.context[2]
  85
  86 #define PR_NUM_GCREGS   _JBLEN
  87
  88 #define CONTEXT(_th) ((_th)->md.context)
  89
  90 /*
  91 ** Initialize the thread context preparing it to execute _main.
  92 */
  93 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)         \
  94     PR_BEGIN_MACRO                                    \
  95         int *context = (_thread)->md.context;         \
  96         *status = PR_TRUE;              \
  97         asm("ta 3");                                    \
  98         (void) setjmp(context);                       \
  99         (_thread)->md.context[2] = (int) ((_sp) - 64); \
 100         (_thread)->md.context[2] &= ~7;         \
 101         (_thread)->md.context[3] = (int) _main;  \
 102         (_thread)->md.context[4] = (int) _main + 4;  \
 103     PR_END_MACRO
 104
 105 #define _MD_SWITCH_CONTEXT(_thread)  \
 106     asm("ta 3");                        \
 107     if (!setjmp(CONTEXT(_thread))) { \
 108         (_thread)->md.errcode = errno;  \
 109         _PR_Schedule();              \
 110     }
 111
 112 /*
 113 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
 114 */
 115 #define _MD_RESTORE_CONTEXT(_thread) \
 116 {                                    \
 117     errno = (_thread)->md.errcode;           \
 118     _MD_SET_CURRENT_THREAD(_thread);     \
 119     longjmp(CONTEXT(_thread), 1);    \
 120 }
 121
 122 #pragma unknown_control_flow(longjmp)
 123 #pragma unknown_control_flow(setjmp)
 124 #pragma unknown_control_flow(_PR_Schedule)
 125
 126 /*
 127 ** Missing function prototypes
 128 */
 129
 130 extern int socket (int domain, int type, int protocol);
 131 extern int getsockname (int s, struct sockaddr *name, int *namelen);
 132 extern int getpeername (int s, struct sockaddr *name, int *namelen);
 133 extern int getsockopt (int s, int level, int optname, char* optval, int* optlen);
 134 extern int setsockopt (int s, int level, int optname, const char* optval, int optlen);
 135 extern int accept (int s, struct sockaddr *addr, int *addrlen);
 136 extern int listen (int s, int backlog);
 137 extern int brk(void *);
 138 extern void *sbrk(int);
 139
 140
 141 /* Machine-dependent (MD) data structures.  SunOS 4 has no native threads. */
 142
 143 struct _MDThread {
 144     jmp_buf context;
 145     int id;
 146     int errcode;
 147 };
 148
 149 struct _MDThreadStack {
 150     PRInt8 notused;
 151 };
 152
 153 struct _MDLock {
 154     PRInt8 notused;
 155 };
 156
 157 struct _MDSemaphore {
 158     PRInt8 notused;
 159 };
 160
 161 struct _MDCVar {
 162     PRInt8 notused;
 163 };
 164
 165 struct _MDSegment {
 166     PRInt8 notused;
 167 };
 168
 169 /*
 170  * md-specific cpu structure field
 171  */
 172 #define _PR_MD_MAX_OSFD FD_SETSIZE
 173
 174 struct _MDCPU_Unix {
 175     PRCList ioQ;
 176     PRUint32 ioq_timeout;
 177     PRInt32 ioq_max_osfd;
 178     PRInt32 ioq_osfd_cnt;
 179 #ifndef _PR_USE_POLL
 180     fd_set fd_read_set, fd_write_set, fd_exception_set;
 181     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
 182                                 fd_exception_cnt[_PR_MD_MAX_OSFD];
 183 #else
 184         struct pollfd *ioq_pollfds;
 185         int ioq_pollfds_size;
 186 #endif  /* _PR_USE_POLL */
 187 };
 188
 189 #define _PR_IOQ(_cpu)                   ((_cpu)->md.md_unix.ioQ)
 190 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
 191 #define _PR_FD_READ_SET(_cpu)           ((_cpu)->md.md_unix.fd_read_set)
 192 #define _PR_FD_READ_CNT(_cpu)           ((_cpu)->md.md_unix.fd_read_cnt)
 193 #define _PR_FD_WRITE_SET(_cpu)          ((_cpu)->md.md_unix.fd_write_set)
 194 #define _PR_FD_WRITE_CNT(_cpu)          ((_cpu)->md.md_unix.fd_write_cnt)
 195 #define _PR_FD_EXCEPTION_SET(_cpu)      ((_cpu)->md.md_unix.fd_exception_set)
 196 #define _PR_FD_EXCEPTION_CNT(_cpu)      ((_cpu)->md.md_unix.fd_exception_cnt)
 197 #define _PR_IOQ_TIMEOUT(_cpu)           ((_cpu)->md.md_unix.ioq_timeout)
 198 #define _PR_IOQ_MAX_OSFD(_cpu)          ((_cpu)->md.md_unix.ioq_max_osfd)
 199 #define _PR_IOQ_OSFD_CNT(_cpu)          ((_cpu)->md.md_unix.ioq_osfd_cnt)
 200 #define _PR_IOQ_POLLFDS(_cpu)           ((_cpu)->md.md_unix.ioq_pollfds)
 201 #define _PR_IOQ_POLLFDS_SIZE(_cpu)      ((_cpu)->md.md_unix.ioq_pollfds_size)
 202
 203 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)  32
 204
 205 struct _MDCPU {
 206         struct _MDCPU_Unix md_unix;
 207 };
 208
 209 #define _MD_INIT_LOCKS()
 210 #define _MD_NEW_LOCK(lock) PR_SUCCESS
 211 #define _MD_FREE_LOCK(lock)
 212 #define _MD_LOCK(lock)
 213 #define _MD_UNLOCK(lock)
 214 #define _MD_INIT_IO()
 215 #define _MD_IOQ_LOCK()
 216 #define _MD_IOQ_UNLOCK()
 217
 218 /* These are copied from _solaris.h */
 219
 220 #define _MD_EARLY_INIT          _MD_EarlyInit
 221 #define _MD_FINAL_INIT                  _PR_UnixInit
 222 #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
 223 #define _MD_INIT_THREAD         _MD_InitializeThread
 224 #define _MD_EXIT_THREAD(thread)
 225 #define _MD_SUSPEND_THREAD(thread)
 226 #define _MD_RESUME_THREAD(thread)
 227 #define _MD_CLEAN_THREAD(_thread)
 228
 229 /*
 230  * We wrapped the select() call.  _MD_SELECT refers to the built-in,
 231  * unwrapped version.
 232  */
 233 #define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
 234 #define _MD_POLL(fds,nfds,timeout) syscall(SYS_poll,fds,nfds,timeout)
 235
 236 #endif /* nspr_sparc_defs_h___ */