third_party/npapi/npspy/extern/nspr/md/_nextstep.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /*
   3  * The contents of this file are subject to the Mozilla Public
   4  * License Version 1.1 (the "License"); you may not use this file
   5  * except in compliance with the License. You may obtain a copy of
   6  * the License at http://www.mozilla.org/MPL/
   7  *
   8  * Software distributed under the License is distributed on an "AS
   9  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  10  * implied. See the License for the specific language governing
  11  * rights and limitations under the License.
  12  *
  13  * The Original Code is the Netscape Portable Runtime (NSPR).
  14  *
  15  * The Initial Developer of the Original Code is Netscape
  16  * Communications Corporation.  Portions created by Netscape are
  17  * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
  18  * Rights Reserved.
  19  *
  20  * Contributor(s):
  21  *
  22  * Alternatively, the contents of this file may be used under the
  23  * terms of the GNU General Public License Version 2 or later (the
  24  * "GPL"), in which case the provisions of the GPL are applicable
  25  * instead of those above.  If you wish to allow use of your
  26  * version of this file only under the terms of the GPL and not to
  27  * allow others to use your version of this file under the MPL,
  28  * indicate your decision by deleting the provisions above and
  29  * replace them with the notice and other provisions required by
  30  * the GPL.  If you do not delete the provisions above, a recipient
  31  * may use your version of this file under either the MPL or the
  32  * GPL.
  33  */
  34
  35 #ifndef nspr_nextstep_defs_h___
  36 #define nspr_nextstep_defs_h___
  37
  38 #include "prthread.h"
  39
  40 #include <bsd/libc.h>
  41 #include <bsd/syscall.h>
  42
  43 /*      syscall() is not declared in NEXTSTEP's syscall.h ...
  44 */
  45 extern int syscall(int number, ...);
  46
  47 /*
  48  * Internal configuration macros
  49  */
  50
  51 #define PR_LINKER_ARCH  "nextstep"
  52 #define _PR_SI_SYSNAME  "NEXTSTEP"
  53 #if defined(__sparc__)
  54 #define _PR_SI_ARCHITECTURE "sparc"
  55 #elif defined(__m68k__)
  56 #define _PR_SI_ARCHITECTURE "m68k"
  57 #elif defined(__i386__)
  58 #define _PR_SI_ARCHITECTURE "x86"
  59 #else
  60 error Unknown NEXTSTEP architecture
  61 #endif
  62 #define PR_DLL_SUFFIX           ".so"
  63
  64 #define _PR_VMBASE              0x30000000
  65 #define _PR_STACK_VMBASE        0x50000000
  66 #define _MD_DEFAULT_STACK_SIZE  65536L
  67 #define _MD_MMAP_FLAGS          MAP_PRIVATE
  68
  69 #undef  HAVE_STACK_GROWING_UP
  70
  71 #define HAVE_WEAK_MALLOC_SYMBOLS
  72
  73 #define HAVE_DLL
  74 #define USE_MACH_DYLD
  75 #define _PR_STAT_HAS_ONLY_ST_ATIME
  76 #define _PR_NO_LARGE_FILES
  77
  78 #define USE_SETJMP
  79
  80 #ifndef _PR_PTHREADS
  81
  82 #include <setjmp.h>
  83
  84 #define PR_CONTEXT_TYPE jmp_buf
  85
  86 #define CONTEXT(_th) ((_th)->md.context)
  87
  88 /* balazs.pataki@sztaki.hu:
  89 ** __sparc__ is checked
  90 ** __m68k__ is checked
  91 ** __i386__ is a guess (one of the two defines should work)
  92 */
  93 #if defined(__sparc__)
  94 #define _MD_GET_SP(_th)         (_th)->md.context[2]
  95 #elif defined(__m68k__)
  96 #define _MD_GET_SP(_th)         (_th)->md.context[2]
  97 #elif defined(__i386__)
  98 /* One of this two must be OK ... try using sc_onstack
  99 */
 100 #define _MD_GET_SP(_th)    (((struct sigcontext *) (_th)->md.context)->sc_onstack)
 101 //#define _MD_GET_SP(_th)               (_th)->md.context[0].sc_esp
 102 #else
 103 error Unknown NEXTSTEP architecture
 104 #endif
 105
 106 #define PR_NUM_GCREGS   _JBLEN
 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) = (int) ((_sp) - 64); \
 118 }
 119
 120 #define _MD_SWITCH_CONTEXT(_thread)  \
 121     if (!setjmp(CONTEXT(_thread))) {  \
 122         (_thread)->md.errcode = errno;  \
 123         _PR_Schedule();  \
 124     }
 125
 126 /*
 127 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
 128 */
 129 #define _MD_RESTORE_CONTEXT(_thread) \
 130 {   \
 131     errno = (_thread)->md.errcode;  \
 132     _MD_SET_CURRENT_THREAD(_thread);  \
 133     longjmp(CONTEXT(_thread), 1);  \
 134 }
 135
 136 /* Machine-dependent (MD) data structures */
 137
 138 struct _MDThread {
 139     PR_CONTEXT_TYPE context;
 140     int id;
 141     int errcode;
 142 };
 143
 144 struct _MDThreadStack {
 145     PRInt8 notused;
 146 };
 147
 148 struct _MDLock {
 149     PRInt8 notused;
 150 };
 151
 152 struct _MDSemaphore {
 153     PRInt8 notused;
 154 };
 155
 156 struct _MDCVar {
 157     PRInt8 notused;
 158 };
 159
 160 struct _MDSegment {
 161     PRInt8 notused;
 162 };
 163
 164 /*
 165  * md-specific cpu structure field
 166  */
 167 #define _PR_MD_MAX_OSFD FD_SETSIZE
 168
 169 struct _MDCPU_Unix {
 170     PRCList ioQ;
 171     PRUint32 ioq_timeout;
 172     PRInt32 ioq_max_osfd;
 173     PRInt32 ioq_osfd_cnt;
 174 #ifndef _PR_USE_POLL
 175     fd_set fd_read_set, fd_write_set, fd_exception_set;
 176     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
 177                                 fd_exception_cnt[_PR_MD_MAX_OSFD];
 178 #else
 179         struct pollfd *ioq_pollfds;
 180         int ioq_pollfds_size;
 181 #endif  /* _PR_USE_POLL */
 182 };
 183
 184 #define _PR_IOQ(_cpu)                   ((_cpu)->md.md_unix.ioQ)
 185 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
 186 #define _PR_FD_READ_SET(_cpu)           ((_cpu)->md.md_unix.fd_read_set)
 187 #define _PR_FD_READ_CNT(_cpu)           ((_cpu)->md.md_unix.fd_read_cnt)
 188 #define _PR_FD_WRITE_SET(_cpu)          ((_cpu)->md.md_unix.fd_write_set)
 189 #define _PR_FD_WRITE_CNT(_cpu)          ((_cpu)->md.md_unix.fd_write_cnt)
 190 #define _PR_FD_EXCEPTION_SET(_cpu)      ((_cpu)->md.md_unix.fd_exception_set)
 191 #define _PR_FD_EXCEPTION_CNT(_cpu)      ((_cpu)->md.md_unix.fd_exception_cnt)
 192 #define _PR_IOQ_TIMEOUT(_cpu)           ((_cpu)->md.md_unix.ioq_timeout)
 193 #define _PR_IOQ_MAX_OSFD(_cpu)          ((_cpu)->md.md_unix.ioq_max_osfd)
 194 #define _PR_IOQ_OSFD_CNT(_cpu)          ((_cpu)->md.md_unix.ioq_osfd_cnt)
 195 #define _PR_IOQ_POLLFDS(_cpu)           ((_cpu)->md.md_unix.ioq_pollfds)
 196 #define _PR_IOQ_POLLFDS_SIZE(_cpu)      ((_cpu)->md.md_unix.ioq_pollfds_size)
 197
 198 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)  32
 199
 200 struct _MDCPU {
 201         struct _MDCPU_Unix md_unix;
 202 };
 203
 204 #define _MD_INIT_LOCKS()
 205 #define _MD_NEW_LOCK(lock) PR_SUCCESS
 206 #define _MD_FREE_LOCK(lock)
 207 #define _MD_LOCK(lock)
 208 #define _MD_UNLOCK(lock)
 209 #define _MD_INIT_IO()
 210 #define _MD_IOQ_LOCK()
 211 #define _MD_IOQ_UNLOCK()
 212
 213 extern PRStatus _MD_InitializeThread(PRThread *thread);
 214
 215 #define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
 216 #define _MD_INIT_THREAD                 _MD_InitializeThread
 217 #define _MD_EXIT_THREAD(thread)
 218 #define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
 219 #define _MD_RESUME_THREAD(thread)       _MD_resume_thread
 220 #define _MD_CLEAN_THREAD(_thread)
 221
 222 extern PRStatus _MD_CREATE_THREAD(
 223     PRThread *thread,
 224     void (*start) (void *),
 225     PRThreadPriority priority,
 226     PRThreadScope scope,
 227     PRThreadState state,
 228     PRUint32 stackSize);
 229 extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
 230 extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
 231 extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
 232 extern void _MD_YIELD(void);
 233
 234 #endif /* ! _PR_PTHREADS */
 235
 236 extern void _MD_EarlyInit(void);
 237 extern PRIntervalTime _PR_UNIX_GetInterval(void);
 238 extern PRIntervalTime _PR_UNIX_TicksPerSecond(void);
 239
 240 #define _MD_EARLY_INIT                  _MD_EarlyInit
 241 #define _MD_FINAL_INIT                  _PR_UnixInit
 242 #define _MD_GET_INTERVAL                  _PR_UNIX_GetInterval
 243 #define _MD_INTERVAL_PER_SEC              _PR_UNIX_TicksPerSecond
 244
 245 /*
 246  * We wrapped the select() call.  _MD_SELECT refers to the built-in,
 247  * unwrapped version.
 248  */
 249 #define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
 250
 251 /* For writev() */
 252 #include <sys/uio.h>
 253
 254 /* signal.h */
 255 /*      balazs.pataki@sztaki.hu: this is stolen from sunos4.h. The things is that
 256 **      NEXTSTEP doesn't support these flags for `struct sigaction's sa_flags, so
 257 **      I have to fake them ...
 258 */
 259 #define SA_RESTART 0
 260
 261 /* mmap */
 262 /*      balazs.pataki@sztaki.hu: NEXTSTEP doesn't have mmap, at least not
 263 **      publically. We have sys/mman.h, but it doesn't declare mmap(), and
 264 **      PROT_NONE is also missing. syscall.h has entries for mmap, munmap, and
 265 **      mprotect so I wrap these in nextstep.c as  mmap(), munmap() and mprotect()
 266 **      and pray for it to work.
 267 **
 268 */
 269 caddr_t mmap(caddr_t addr, size_t len, int prot, int flags,
 270           int fildes, off_t off);
 271 int munmap(caddr_t addr, size_t len);
 272 int mprotect(caddr_t addr, size_t len, int prot);
 273
 274 /*      my_mmap() is implemented in nextstep.c and is based on map_fd() of mach.
 275 */
 276 caddr_t my_mmap(caddr_t addr, size_t len, int prot, int flags,
 277           int fildes, off_t off);
 278 int my_munmap(caddr_t addr, size_t len);
 279
 280
 281 /*      string.h
 282 */
 283 /* balazs.pataki@sztaki.hu: this is missing so implemenetd in nextstep.c ...
 284 */
 285 char *strdup(const char *s1);
 286
 287 /* unistd.h
 288 */
 289 /*      balazs.pataki@sztaki.hu: these functions are hidden, though correctly
 290 **      implemented in NEXTSTEP. Here I give the declaration for them to be used
 291 **      by prmalloc.c, and I have a wrapped syscall() version of them in nextstep.c
 292 */
 293 int brk(void *endds);
 294 void *sbrk(int incr);
 295
 296 #endif /* nspr_nextstep_defs_h___ */