OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [ada/] [s-osinte-lynxos.ads] - Blame information for rev 826

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 281 jeremybenn
------------------------------------------------------------------------------
2
--                                                                          --
3
--                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
4
--                                                                          --
5
--                   S Y S T E M . O S _ I N T E R F A C E                  --
6
--                                                                          --
7
--                                  S p e c                                 --
8
--                                                                          --
9
--             Copyright (C) 1991-1994, Florida State University            --
10
--          Copyright (C) 1995-2008, Free Software Foundation, Inc.         --
11
--                                                                          --
12
-- GNARL is free software; you can  redistribute it  and/or modify it under --
13
-- terms of the  GNU General Public License as published  by the Free Soft- --
14
-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
15
-- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
16
-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
17
-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
18
-- for  more details.  You should have  received  a copy of the GNU General --
19
-- Public License  distributed with GNARL; see file COPYING.  If not, write --
20
-- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
21
-- Boston, MA 02110-1301, USA.                                              --
22
--                                                                          --
23
-- As a special exception,  if other files  instantiate  generics from this --
24
-- unit, or you link  this unit with other files  to produce an executable, --
25
-- this  unit  does not  by itself cause  the resulting  executable  to  be --
26
-- covered  by the  GNU  General  Public  License.  This exception does not --
27
-- however invalidate  any other reasons why  the executable file  might be --
28
-- covered by the  GNU Public License.                                      --
29
--                                                                          --
30
-- GNARL was developed by the GNARL team at Florida State University.       --
31
-- Extensive contributions were provided by Ada Core Technologies, Inc.     --
32
--                                                                          --
33
------------------------------------------------------------------------------
34
 
35
--  This is a LynxOS (POSIX Threads) version of this package
36
 
37
--  This package encapsulates all direct interfaces to OS services
38
--  that are needed by the tasking run-time (libgnarl).
39
 
40
--  PLEASE DO NOT add any with-clauses to this package or remove the pragma
41
--  Preelaborate. This package is designed to be a bottom-level (leaf) package.
42
 
43
with Ada.Unchecked_Conversion;
44
 
45
with Interfaces.C;
46
 
47
package System.OS_Interface is
48
   pragma Preelaborate;
49
 
50
   pragma Linker_Options ("-mthreads");
51
   --  Selects the POSIX 1.c runtime, rather than the non-threading runtime
52
   --  or the deprecated legacy threads library. The -mthreads flag is
53
   --  defined in patch.LynxOS and matches the definition for Lynx's gcc.
54
 
55
   subtype int            is Interfaces.C.int;
56
   subtype short          is Interfaces.C.short;
57
   subtype long           is Interfaces.C.long;
58
   subtype unsigned       is Interfaces.C.unsigned;
59
   subtype unsigned_short is Interfaces.C.unsigned_short;
60
   subtype unsigned_long  is Interfaces.C.unsigned_long;
61
   subtype unsigned_char  is Interfaces.C.unsigned_char;
62
   subtype plain_char     is Interfaces.C.plain_char;
63
   subtype size_t         is Interfaces.C.size_t;
64
 
65
   -----------
66
   -- Errno --
67
   -----------
68
 
69
   function errno return int;
70
   pragma Import (C, errno, "__get_errno");
71
 
72
   EAGAIN    : constant := 11;
73
   EINTR     : constant := 4;
74
   EINVAL    : constant := 22;
75
   ENOMEM    : constant := 12;
76
   ETIMEDOUT : constant := 60;
77
 
78
   -------------
79
   -- Signals --
80
   -------------
81
 
82
   Max_Interrupt : constant := 63;
83
 
84
   --  Max_Interrupt is the number of OS signals, as defined in:
85
   --
86
   --   /usr/include/sys/signal.h
87
   --
88
   --
89
   --  The lowest numbered signal is 1, but 0 is a valid argument to some
90
   --  library functions, e.g. kill(2). However, 0 is not just another
91
   --  signal: For instance 'I in Signal' and similar should be used with
92
   --  caution.
93
 
94
   type Signal is new int range 0 .. Max_Interrupt;
95
   for  Signal'Size use int'Size;
96
 
97
   SIGHUP        : constant := 1;  --  hangup
98
   SIGINT        : constant := 2;  --  interrupt (rubout)
99
   SIGQUIT       : constant := 3;  --  quit (ASCD FS)
100
   SIGILL        : constant := 4;  --  illegal instruction (not reset)
101
   SIGTRAP       : constant := 5;  --  trace trap (not reset)
102
   SIGBRK        : constant := 6;  --  break
103
   SIGIOT        : constant := 6;  --  IOT instruction
104
   SIGABRT       : constant := 6;  --  used by abort, replace SIGIOT in future
105
   SIGCORE       : constant := 7;  --  kill with core dump
106
   SIGEMT        : constant := 7;  --  EMT instruction
107
   SIGFPE        : constant := 8;  --  floating point exception
108
   SIGKILL       : constant := 9;  --  kill (cannot be caught or ignored)
109
   SIGBUS        : constant := 10; --  bus error
110
   SIGSEGV       : constant := 11; --  segmentation violation
111
   SIGSYS        : constant := 12; --  bad argument to system call
112
   SIGPIPE       : constant := 13; --  write on a pipe with no one to read it
113
   SIGALRM       : constant := 14; --  alarm clock
114
   SIGTERM       : constant := 15; --  software termination signal from kill
115
   SIGURG        : constant := 16; --  urgent condition on IO channel
116
   SIGSTOP       : constant := 17; --  stop (cannot be caught or ignored)
117
   SIGTSTP       : constant := 18; --  user stop requested from tty
118
   SIGCONT       : constant := 19; --  stopped process has been continued
119
   SIGCLD        : constant := 20; --  alias for SIGCHLD
120
   SIGCHLD       : constant := 20; --  child status change
121
   SIGTTIN       : constant := 21; --  background tty read attempted
122
   SIGTTOU       : constant := 22; --  background tty write attempted
123
   SIGIO         : constant := 23; --  I/O possible (Solaris SIGPOLL alias)
124
   SIGPOLL       : constant := 23; --  pollable event occurred
125
   SIGTHREADKILL : constant := 24; --  Reserved by LynxOS runtime
126
   SIGXCPU       : constant := 24; --  CPU time limit exceeded
127
   SIGXFSZ       : constant := 25; --  filesize limit exceeded
128
   SIGVTALRM     : constant := 26; --  virtual timer expired
129
   SIGPROF       : constant := 27; --  profiling timer expired
130
   SIGWINCH      : constant := 28; --  window size change
131
   SIGLOST       : constant := 29; --  SUN 4.1 compatibility
132
   SIGUSR1       : constant := 30; --  user defined signal 1
133
   SIGUSR2       : constant := 31; --  user defined signal 2
134
 
135
   SIGPRIO       : constant := 32;
136
   --  sent to a process with its priority or group is changed
137
 
138
   SIGADAABORT : constant := SIGABRT;
139
   --  Change this if you want to use another signal for task abort.
140
   --  SIGTERM might be a good one.
141
 
142
   type Signal_Set is array (Natural range <>) of Signal;
143
 
144
   Unmasked    : constant Signal_Set :=
145
     (SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF, SIGTHREADKILL);
146
   Reserved    : constant Signal_Set := (SIGABRT, SIGKILL, SIGSTOP, SIGPRIO);
147
 
148
   type sigset_t is private;
149
 
150
   function sigaddset (set : access sigset_t; sig : Signal) return int;
151
   pragma Import (C, sigaddset, "sigaddset");
152
 
153
   function sigdelset (set : access sigset_t; sig : Signal) return int;
154
   pragma Import (C, sigdelset, "sigdelset");
155
 
156
   function sigfillset (set : access sigset_t) return int;
157
   pragma Import (C, sigfillset, "sigfillset");
158
 
159
   function sigismember (set : access sigset_t; sig : Signal) return int;
160
   pragma Import (C, sigismember, "sigismember");
161
 
162
   function sigemptyset (set : access sigset_t) return int;
163
   pragma Import (C, sigemptyset, "sigemptyset");
164
 
165
   type struct_sigaction is record
166
      sa_handler   : System.Address;
167
      sa_mask      : sigset_t;
168
      sa_flags     : int;
169
   end record;
170
   pragma Convention (C, struct_sigaction);
171
   type struct_sigaction_ptr is access all struct_sigaction;
172
 
173
   SA_SIGINFO : constant := 16#80#;
174
 
175
   SA_ONSTACK : constant := 16#00#;
176
   --  SA_ONSTACK is not defined on LynxOS, but it is referred to in the POSIX
177
   --  implementation of System.Interrupt_Management. Therefore we define a
178
   --  dummy value of zero here so that setting this flag is a nop.
179
 
180
   SIG_BLOCK   : constant := 0;
181
   SIG_UNBLOCK : constant := 1;
182
   SIG_SETMASK : constant := 2;
183
 
184
   SIG_DFL : constant := 0;
185
   SIG_IGN : constant := 1;
186
 
187
   function sigaction
188
     (sig  : Signal;
189
      act  : struct_sigaction_ptr;
190
      oact : struct_sigaction_ptr) return int;
191
   pragma Import (C, sigaction, "sigaction");
192
 
193
   ----------
194
   -- Time --
195
   ----------
196
 
197
   Time_Slice_Supported : constant Boolean := True;
198
   --  Indicates whether time slicing is supported
199
 
200
   type timespec is private;
201
 
202
   type clockid_t is private;
203
 
204
   CLOCK_REALTIME : constant clockid_t;
205
 
206
   function clock_gettime
207
     (clock_id : clockid_t;
208
      tp       : access timespec) return int;
209
   pragma Import (C, clock_gettime, "clock_gettime");
210
 
211
   function clock_getres
212
     (clock_id : clockid_t;
213
      res      : access timespec) return int;
214
   pragma Import (C, clock_getres, "clock_getres");
215
 
216
   function To_Duration (TS : timespec) return Duration;
217
   pragma Inline (To_Duration);
218
 
219
   function To_Timespec (D : Duration) return timespec;
220
   pragma Inline (To_Timespec);
221
 
222
   type struct_timezone is record
223
      tz_minuteswest : int;
224
      tz_dsttime     : int;
225
   end record;
226
   pragma Convention (C, struct_timezone);
227
   type struct_timezone_ptr is access all struct_timezone;
228
 
229
   -------------------------
230
   -- Priority Scheduling --
231
   -------------------------
232
 
233
   SCHED_FIFO  : constant := 16#200000#;
234
   SCHED_RR    : constant := 16#100000#;
235
   SCHED_OTHER : constant := 16#400000#;
236
 
237
   -------------
238
   -- Process --
239
   -------------
240
 
241
   type pid_t is private;
242
 
243
   function kill (pid : pid_t; sig : Signal) return int;
244
   pragma Import (C, kill, "kill");
245
 
246
   function getpid return pid_t;
247
   pragma Import (C, getpid, "getpid");
248
 
249
   ---------
250
   -- LWP --
251
   ---------
252
 
253
   function lwp_self return System.Address;
254
   pragma Import (C, lwp_self, "pthread_self");
255
 
256
   -------------
257
   -- Threads --
258
   -------------
259
 
260
   type Thread_Body is access
261
     function (arg : System.Address) return System.Address;
262
   pragma Convention (C, Thread_Body);
263
 
264
   function Thread_Body_Access is new
265
     Ada.Unchecked_Conversion (System.Address, Thread_Body);
266
 
267
   type pthread_t           is private;
268
   subtype Thread_Id        is pthread_t;
269
 
270
   type pthread_mutex_t     is limited private;
271
   type pthread_cond_t      is limited private;
272
   type pthread_attr_t      is limited private;
273
   type pthread_mutexattr_t is limited private;
274
   type pthread_condattr_t  is limited private;
275
   type pthread_key_t       is private;
276
 
277
   PTHREAD_CREATE_DETACHED : constant := 1;
278
   PTHREAD_CREATE_JOINABLE : constant := 0;
279
 
280
   -----------
281
   -- Stack --
282
   -----------
283
 
284
   Alternate_Stack_Size : constant := 0;
285
   --  No alternate signal stack is used on this platform
286
 
287
   Stack_Base_Available : constant Boolean := False;
288
   --  Indicates whether the stack base is available on this target
289
 
290
   function Get_Stack_Base (thread : pthread_t) return Address;
291
   pragma Inline (Get_Stack_Base);
292
   --  Returns the stack base of the specified thread.
293
   --  Only call this function when Stack_Base_Available is True.
294
 
295
   function Get_Page_Size return size_t;
296
   function Get_Page_Size return Address;
297
   pragma Import (C, Get_Page_Size, "getpagesize");
298
   --  Returns the size of a page, or 0 if this is not relevant on this
299
   --  target
300
 
301
   PROT_NONE  : constant := 1;
302
   PROT_READ  : constant := 2;
303
   PROT_WRITE : constant := 4;
304
   PROT_EXEC  : constant := 8;
305
   PROT_ALL   : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
306
 
307
   PROT_ON    : constant := PROT_READ;
308
   PROT_OFF   : constant := PROT_ALL;
309
 
310
   function mprotect (addr : Address; len : size_t; prot : int) return int;
311
   pragma Import (C, mprotect);
312
 
313
   ---------------------------------------
314
   -- Nonstandard Thread Initialization --
315
   ---------------------------------------
316
 
317
   procedure pthread_init;
318
   --  This is a dummy procedure to share some GNULLI files
319
 
320
   -------------------------
321
   -- POSIX.1c  Section 3 --
322
   -------------------------
323
 
324
   function sigwait
325
     (set : access sigset_t;
326
      sig : access Signal) return int;
327
   pragma Inline (sigwait);
328
   --  LynxOS has non standard sigwait
329
 
330
   function pthread_kill
331
     (thread : pthread_t;
332
      sig    : Signal) return int;
333
   pragma Import (C, pthread_kill, "pthread_kill");
334
 
335
   function pthread_sigmask
336
     (how  : int;
337
      set  : access sigset_t;
338
      oset : access sigset_t) return int;
339
   pragma Import (C, pthread_sigmask, "pthread_sigmask");
340
   --  The behavior of pthread_sigmask on LynxOS requires
341
   --  further investigation.
342
 
343
   ----------------------------
344
   --  POSIX.1c  Section 11  --
345
   ----------------------------
346
 
347
   function pthread_mutexattr_init
348
     (attr : access pthread_mutexattr_t) return int;
349
   pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
350
 
351
   function pthread_mutexattr_destroy
352
     (attr : access pthread_mutexattr_t) return int;
353
   pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
354
 
355
   function pthread_mutex_init
356
     (mutex : access pthread_mutex_t;
357
      attr  : access pthread_mutexattr_t) return int;
358
   pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
359
 
360
   function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
361
   pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
362
 
363
   function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
364
   pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
365
 
366
   function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
367
   pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
368
 
369
   function pthread_condattr_init
370
     (attr : access pthread_condattr_t) return int;
371
   pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
372
 
373
   function pthread_condattr_destroy
374
     (attr : access pthread_condattr_t) return int;
375
   pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
376
 
377
   function pthread_cond_init
378
     (cond : access pthread_cond_t;
379
      attr : access pthread_condattr_t) return int;
380
   pragma Import (C, pthread_cond_init, "pthread_cond_init");
381
 
382
   function pthread_cond_destroy (cond : access pthread_cond_t) return int;
383
   pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
384
 
385
   function pthread_cond_signal (cond : access pthread_cond_t) return int;
386
   pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
387
 
388
   function pthread_cond_wait
389
     (cond  : access pthread_cond_t;
390
      mutex : access pthread_mutex_t) return int;
391
   pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
392
 
393
   function pthread_cond_timedwait
394
     (cond    : access pthread_cond_t;
395
      mutex   : access pthread_mutex_t;
396
      abstime : access timespec) return int;
397
   pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
398
 
399
   Relative_Timed_Wait : constant Boolean := False;
400
   --  pthread_cond_timedwait requires an absolute delay time
401
 
402
   --------------------------
403
   -- POSIX.1c  Section 13 --
404
   --------------------------
405
 
406
   PTHREAD_PRIO_NONE    : constant := 0;
407
   PTHREAD_PRIO_INHERIT : constant := 1;
408
   PTHREAD_PRIO_PROTECT : constant := 2;
409
 
410
   function pthread_mutexattr_setprotocol
411
     (attr     : access pthread_mutexattr_t;
412
      protocol : int) return int;
413
   pragma Import (C, pthread_mutexattr_setprotocol);
414
 
415
   function pthread_mutexattr_setprioceiling
416
     (attr        : access pthread_mutexattr_t;
417
      prioceiling : int) return int;
418
   pragma Import (C, pthread_mutexattr_setprioceiling);
419
 
420
   type struct_sched_param is record
421
      sched_priority : int;
422
   end record;
423
 
424
   function pthread_setschedparam
425
     (thread : pthread_t;
426
      policy : int;
427
      param  : access struct_sched_param) return int;
428
   pragma Import (C, pthread_setschedparam, "pthread_setschedparam");
429
 
430
   function pthread_attr_setscope
431
     (attr            : access pthread_attr_t;
432
      contentionscope : int) return int;
433
   pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope");
434
 
435
   function pthread_attr_setinheritsched
436
     (attr         : access pthread_attr_t;
437
      inheritsched : int) return int;
438
   pragma Import (C, pthread_attr_setinheritsched);
439
 
440
   function pthread_attr_setschedpolicy
441
     (attr   : access pthread_attr_t;
442
      policy : int) return int;
443
   pragma Import (C, pthread_attr_setschedpolicy);
444
 
445
   function sched_yield return int;
446
   pragma Import (C, sched_yield, "sched_yield");
447
 
448
   --------------------------
449
   -- P1003.1c  Section 16 --
450
   --------------------------
451
 
452
   function pthread_attr_init (attributes : access pthread_attr_t) return int;
453
   pragma Import (C, pthread_attr_init, "pthread_attr_init");
454
 
455
   function pthread_attr_destroy
456
     (attributes : access pthread_attr_t) return int;
457
   pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
458
 
459
   function pthread_attr_setdetachstate
460
     (attr        : access pthread_attr_t;
461
      detachstate : int) return int;
462
   pragma Import (C, pthread_attr_setdetachstate);
463
 
464
   function pthread_attr_setstacksize
465
     (attr      : access pthread_attr_t;
466
      stacksize : size_t) return int;
467
   pragma Import (C, pthread_attr_setstacksize);
468
 
469
   function pthread_create
470
     (thread        : access pthread_t;
471
      attributes    : access pthread_attr_t;
472
      start_routine : Thread_Body;
473
      arg           : System.Address) return int;
474
   pragma Import (C, pthread_create, "pthread_create");
475
 
476
   procedure pthread_exit (status : System.Address);
477
   pragma Import (C, pthread_exit, "pthread_exit");
478
 
479
   function pthread_self return pthread_t;
480
   pragma Import (C, pthread_self, "pthread_self");
481
 
482
   --------------------------
483
   -- POSIX.1c  Section 17 --
484
   --------------------------
485
 
486
   function st_setspecific
487
     (key   : pthread_key_t;
488
      value : System.Address) return int;
489
   pragma Import (C, st_setspecific, "st_setspecific");
490
 
491
   function st_getspecific
492
     (key    : pthread_key_t;
493
      retval : System.Address) return int;
494
   pragma Import (C, st_getspecific, "st_getspecific");
495
 
496
   type destructor_pointer is access procedure (arg : System.Address);
497
   pragma Convention (C, destructor_pointer);
498
 
499
   function st_keycreate
500
     (destructor : destructor_pointer;
501
      key        : access pthread_key_t) return int;
502
   pragma Import (C, st_keycreate, "st_keycreate");
503
 
504
private
505
 
506
   type sigset_t is record
507
      X1, X2 : long;
508
   end record;
509
   pragma Convention (C, sigset_t);
510
 
511
   type pid_t is new long;
512
 
513
   type time_t is new long;
514
 
515
   type timespec is record
516
      tv_sec  : time_t;
517
      tv_nsec : long;
518
   end record;
519
   pragma Convention (C, timespec);
520
 
521
   type clockid_t is new unsigned_char;
522
   CLOCK_REALTIME : constant clockid_t := 0;
523
 
524
   type st_attr_t is record
525
      stksize      : int;
526
      prio         : int;
527
      inheritsched : int;
528
      state        : int;
529
      sched        : int;
530
      detachstate  : int;
531
      guardsize    : int;
532
   end record;
533
   pragma Convention (C, st_attr_t);
534
 
535
   type pthread_attr_t is record
536
      pthread_attr_magic : unsigned;
537
      st                 : st_attr_t;
538
      pthread_attr_scope : int;
539
   end record;
540
   pragma Convention (C, pthread_attr_t);
541
 
542
   type pthread_condattr_t is record
543
      cv_magic   : unsigned;
544
      cv_pshared : unsigned;
545
   end record;
546
   pragma Convention (C, pthread_condattr_t);
547
 
548
   type pthread_mutexattr_t is record
549
      m_flags   : unsigned;
550
      m_prio_c  : int;
551
      m_pshared : int;
552
   end record;
553
   pragma Convention (C, pthread_mutexattr_t);
554
 
555
   type tid_t is new short;
556
   type pthread_t is new tid_t;
557
 
558
   type block_obj_t is new System.Address;
559
   --  typedef struct _block_obj_s {
560
   --     struct st_entry *b_head;
561
   --  } block_obj_t;
562
 
563
   type pthread_mutex_t is record
564
      m_flags      : unsigned;
565
      m_owner      : tid_t;
566
      m_wait       : block_obj_t;
567
      m_prio_c     : int;
568
      m_oldprio    : int;
569
      m_count      : int;
570
      m_referenced : int;
571
   end record;
572
   pragma Convention (C, pthread_mutex_t);
573
   type pthread_mutex_t_ptr is access all pthread_mutex_t;
574
 
575
   type pthread_cond_t is record
576
      cv_magic  : unsigned;
577
      cv_wait   : block_obj_t;
578
      cv_mutex  : pthread_mutex_t_ptr;
579
      cv_refcnt : int;
580
   end record;
581
   pragma Convention (C, pthread_cond_t);
582
 
583
   type pthread_key_t is new int;
584
 
585
end System.OS_Interface;

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.