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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [infra/] [current/] [include/] [cyg_type.h] - Blame information for rev 786

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#ifndef CYGONCE_INFRA_CYG_TYPE_H
2
#define CYGONCE_INFRA_CYG_TYPE_H
3
 
4
//==========================================================================
5
//
6
//      cyg_type.h
7
//
8
//      Standard types, and some useful coding macros.
9
//
10
//==========================================================================
11
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
12
// -------------------------------------------                              
13
// This file is part of eCos, the Embedded Configurable Operating System.   
14
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2009 Free Software Foundation, Inc.
15
//
16
// eCos is free software; you can redistribute it and/or modify it under    
17
// the terms of the GNU General Public License as published by the Free     
18
// Software Foundation; either version 2 or (at your option) any later      
19
// version.                                                                 
20
//
21
// eCos is distributed in the hope that it will be useful, but WITHOUT      
22
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
23
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
24
// for more details.                                                        
25
//
26
// You should have received a copy of the GNU General Public License        
27
// along with eCos; if not, write to the Free Software Foundation, Inc.,    
28
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
29
//
30
// As a special exception, if other files instantiate templates or use      
31
// macros or inline functions from this file, or you compile this file      
32
// and link it with other works to produce a work based on this file,       
33
// this file does not by itself cause the resulting work to be covered by   
34
// the GNU General Public License. However the source code for this file    
35
// must still be made available in accordance with section (3) of the GNU   
36
// General Public License v2.                                               
37
//
38
// This exception does not invalidate any other reasons why a work based    
39
// on this file might be covered by the GNU General Public License.         
40
// -------------------------------------------                              
41
// ####ECOSGPLCOPYRIGHTEND####                                              
42
//==========================================================================
43
//#####DESCRIPTIONBEGIN####
44
//
45
// Author(s):   nickg from an original by hmt
46
// Contributors:  nickg
47
// Date:        1997-09-08
48
// Purpose:     share unambiguously sized types.
49
// Description: we typedef [cyg_][u]int8,16,32 &c for general use.
50
// Usage:       #include "cyg/infra/cyg_type.h"
51
//              ...
52
//              cyg_int32 my_32bit_integer;
53
//              
54
//####DESCRIPTIONEND####
55
//
56
 
57
#include <stddef.h>           // Definition of NULL from the compiler
58
 
59
// -------------------------------------------------------------------------
60
// Some useful macros. These are defined here by default.
61
 
62
// __externC is used in mixed C/C++ headers to force C linkage on an external
63
// definition. It avoids having to put all sorts of ifdefs in.
64
 
65
#ifdef __cplusplus
66
# define __externC extern "C"
67
#else
68
# define __externC extern
69
#endif
70
// Also define externC for now - but it is deprecated
71
#define externC __externC
72
 
73
// Compiler version.
74
#ifdef __GNUC__
75
# if defined(__GNU_PATCHLEVEL__)
76
#  define __GNUC_VERSION__ (__GNUC__ * 10000 \
77
                             + __GNUC_MINOR__ * 100 \
78
                             + __GNUC_PATCHLEVEL__)
79
# else
80
#  define __GNUC_VERSION__ (__GNUC__ * 10000 \
81
                             + __GNUC_MINOR__ * 100)
82
# endif
83
#endif
84
 
85
// -------------------------------------------------------------------------
86
// The header <basetype.h> defines the base types used here. It is
87
// supplied either by the target architecture HAL, or by the host
88
// porting kit. They are all defined as macros, and only those that
89
// make choices other than the defaults given below need be defined.
90
 
91
#define CYG_LSBFIRST 1234
92
#define CYG_MSBFIRST 4321
93
 
94
#include <cyg/hal/basetype.h>
95
 
96
#if (CYG_BYTEORDER != CYG_LSBFIRST) && (CYG_BYTEORDER != CYG_MSBFIRST)
97
# error You must define CYG_BYTEORDER to equal CYG_LSBFIRST or CYG_MSBFIRST
98
#endif
99
 
100
#ifndef CYG_DOUBLE_BYTEORDER
101
#define CYG_DOUBLE_BYTEORDER CYG_BYTEORDER
102
#endif
103
 
104
#ifndef cyg_halint8
105
# define cyg_halint8 char
106
#endif
107
#ifndef cyg_halint16
108
# define cyg_halint16 short
109
#endif
110
#ifndef cyg_halint32
111
# define cyg_halint32 int
112
#endif
113
#ifndef cyg_halint64
114
# define cyg_halint64 long long
115
#endif
116
 
117
#ifndef cyg_halcount8
118
# define cyg_halcount8 int
119
#endif
120
#ifndef cyg_halcount16
121
# define cyg_halcount16 int
122
#endif
123
#ifndef cyg_halcount32
124
# define cyg_halcount32 int
125
#endif
126
#ifndef cyg_halcount64
127
# define cyg_halcount64 long long
128
#endif
129
 
130
#ifndef cyg_haladdress
131
# define cyg_haladdress cyg_uint32
132
#endif
133
#ifndef cyg_haladdrword
134
# define cyg_haladdrword cyg_uint32
135
#endif
136
 
137
#ifndef cyg_halbool
138
# define cyg_halbool int
139
#endif
140
 
141
#ifndef cyg_halatomic
142
# define cyg_halatomic cyg_halint8
143
#endif
144
 
145
// -------------------------------------------------------------------------
146
// Provide a default architecture alignment
147
// This may be overridden in basetype.h if necessary.
148
// These should be straightforward numbers to allow use in assembly.
149
 
150
#ifndef CYGARC_ALIGNMENT
151
# define CYGARC_ALIGNMENT 8
152
#endif
153
// And corresponding power of two alignment
154
#ifndef CYGARC_P2ALIGNMENT
155
# define CYGARC_P2ALIGNMENT 3
156
#endif
157
#if (CYGARC_ALIGNMENT) != (1 << CYGARC_P2ALIGNMENT)
158
# error "Inconsistent CYGARC_ALIGNMENT and CYGARC_P2ALIGNMENT values"
159
#endif
160
 
161
// -------------------------------------------------------------------------
162
// The obvious few that compilers may define for you.
163
// But in case they don't:
164
 
165
#ifndef NULL
166
# define NULL 0
167
#endif
168
 
169
#ifndef __cplusplus
170
 
171
typedef cyg_halbool bool;
172
 
173
# ifndef false
174
#  define false 0
175
# endif
176
 
177
# ifndef true
178
#  define true (!false)
179
# endif
180
 
181
#endif
182
 
183
// -------------------------------------------------------------------------
184
// Allow creation of procedure-like macros that are a single statement,
185
// and must be followed by a semi-colon
186
 
187
#define CYG_MACRO_START do {
188
#define CYG_MACRO_END   } while (0)
189
 
190
#define CYG_EMPTY_STATEMENT CYG_MACRO_START CYG_MACRO_END
191
 
192
#define CYG_UNUSED_PARAM( _type_, _name_ ) CYG_MACRO_START      \
193
  _type_ __tmp1 = (_name_);                                     \
194
  _type_ __tmp2 = __tmp1;                                       \
195
  __tmp1 = __tmp2;                                              \
196
CYG_MACRO_END
197
 
198
 
199
//----------------------------------------------------------------------------
200
// The unused attribute stops the compiler warning about the variable
201
// not being used.
202
// The used attribute prevents the compiler from optimizing it away.
203
 
204
#define CYG_REFERENCE_OBJECT(__object__)                            \
205
    CYG_MACRO_START                                                 \
206
    static const void*  __cygvar_discard_me__                       \
207
    __attribute__ ((unused, used)) = (const void*)&(__object__);    \
208
    CYG_MACRO_END
209
 
210
// -------------------------------------------------------------------------
211
// Define basic types for using integers in memory and structures;
212
// depends on compiler defaults and CPU type.
213
 
214
typedef unsigned cyg_halint8    cyg_uint8  ;
215
typedef   signed cyg_halint8    cyg_int8   ;
216
 
217
typedef unsigned cyg_halint16   cyg_uint16 ;
218
typedef   signed cyg_halint16   cyg_int16  ;
219
 
220
typedef unsigned cyg_halint32   cyg_uint32 ;
221
typedef   signed cyg_halint32   cyg_int32  ;
222
 
223
typedef unsigned cyg_halint64   cyg_uint64 ;
224
typedef   signed cyg_halint64   cyg_int64  ;
225
 
226
typedef  cyg_halbool            cyg_bool   ;
227
 
228
// -------------------------------------------------------------------------
229
// Define types for using integers in registers for looping and the like;
230
// depends on CPU type, choose what it is most comfortable with, with at
231
// least the range required.
232
 
233
typedef unsigned cyg_halcount8  cyg_ucount8  ;
234
typedef   signed cyg_halcount8  cyg_count8   ;
235
 
236
typedef unsigned cyg_halcount16 cyg_ucount16 ;
237
typedef   signed cyg_halcount16 cyg_count16  ;
238
 
239
typedef unsigned cyg_halcount32 cyg_ucount32 ;
240
typedef   signed cyg_halcount32 cyg_count32  ;
241
 
242
typedef unsigned cyg_halcount64 cyg_ucount64 ;
243
typedef   signed cyg_halcount64 cyg_count64  ;
244
 
245
// -------------------------------------------------------------------------
246
// Define a type to be used for atomic accesses. This type is guaranteed
247
// to be read or written in a single uninterruptible operation. This type
248
// is at least a single byte.
249
 
250
typedef volatile unsigned cyg_halatomic  cyg_atomic;
251
typedef volatile unsigned cyg_halatomic  CYG_ATOMIC;
252
 
253
// -------------------------------------------------------------------------
254
// Define types for access plain, on-the-metal memory or devices.
255
 
256
typedef cyg_uint32  CYG_WORD;
257
typedef cyg_uint8   CYG_BYTE;
258
typedef cyg_uint16  CYG_WORD16;
259
typedef cyg_uint32  CYG_WORD32;
260
typedef cyg_uint64  CYG_WORD64;
261
 
262
typedef cyg_haladdress  CYG_ADDRESS;
263
typedef cyg_haladdrword CYG_ADDRWORD;
264
 
265
// -------------------------------------------------------------------------
266
// Number of elements in a (statically allocated) array.
267
 
268
#define CYG_NELEM(a) (sizeof(a) / sizeof((a)[0]))
269
 
270
// -------------------------------------------------------------------------
271
// Constructor ordering macros.  These are added as annotations to all
272
// static objects to order the constuctors appropriately.
273
 
274
#if defined(__cplusplus) && defined(__GNUC__) && \
275
    !defined(CYGBLD_ATTRIB_INIT_PRI)
276
# define CYGBLD_ATTRIB_INIT_PRI( _pri_ ) __attribute__((init_priority(_pri_)))
277
#elif !defined(CYGBLD_ATTRIB_INIT_PRI)
278
// FIXME: should maybe just bomb out if this is attempted anywhere else?
279
// Not sure
280
# define CYGBLD_ATTRIB_INIT_PRI( _pri_ )
281
#endif
282
 
283
// The following will be removed eventually as it doesn't allow the use of
284
// e.g. pri+5 format
285
#define CYG_INIT_PRIORITY( _pri_ ) CYGBLD_ATTRIB_INIT_PRI( CYG_INIT_##_pri_ )
286
 
287
#define CYGBLD_ATTRIB_INIT_BEFORE( _pri_ ) CYGBLD_ATTRIB_INIT_PRI(_pri_-100)
288
#define CYGBLD_ATTRIB_INIT_AFTER( _pri_ )  CYGBLD_ATTRIB_INIT_PRI(_pri_+100)
289
 
290
#if defined(__GNUC__) && !defined(__cplusplus) && (__GNUC_VERSION__ >= 40300)
291
// Equivalents of the above for C functions, available from gcc 4.3 onwards.
292
# define CYGBLD_ATTRIB_C_INIT_PRI( _pri_)       __attribute__((constructor (_pri_)))
293
# define CYGBLD_ATTRIB_C_INIT_BEFORE( _pri_ )   __attribute__((constructor (_pri_-100)))
294
# define CYGBLD_ATTRIB_C_INIT_AFTER( _pri_ )    __attribute__((constructor (_pri_+100)))
295
#endif
296
 
297
// Start with initializing everything inside the cpu and the main memory.
298
#define CYG_INIT_HAL                    10000
299
#define CYG_INIT_SCHEDULER              11000
300
#define CYG_INIT_IDLE_THREAD            11100
301
#define CYG_INIT_INTERRUPTS             12000
302
#define CYG_INIT_CLOCK                  14000
303
#define CYG_INIT_THREADS                16000
304
#define CYG_INIT_KERNEL                 19000
305
#define CYG_INIT_MEMALLOC               20000
306
// Now move on to I/O subsystems and device drivers. These can make use of
307
// kernel and HAL functionality, and can dynamically allocate memory if
308
// absolutely needed. For now they can also assume that diag_printf()
309
// functionality is available, but that may change in future.
310
//
311
// Primary buses are ones very closely tied to the processor, e.g. PCI.
312
#define CYG_INIT_BUS_PRIMARY            30000
313
// Not yet: on some targets cyg_pci_init() has to be called very early
314
// on for HAL diagnostics to work.
315
// #define CYG_INIT_BUS_PCI                CYG_INIT_BUS_PRIMARY
316
//
317
// Secondary buses may hang off primary buses, e.g. USB host.
318
#define CYG_INIT_BUS_SECONDARY          31000
319
// Tertiary buses are everything else.
320
#define CYG_INIT_BUS_TERTIARY           32000
321
#define CYG_INIT_BUS_I2C                CYG_INIT_BUS_TERTIARY
322
#define CYG_INIT_BUS_SPI                CYG_INIT_BUS_TERTIARY
323
//
324
// In future HAL diag initialization may happen at this point.
325
//
326
// Watchdogs and wallclocks often hang off a tertiary bus but
327
// have no dependencies
328
#define CYG_INIT_DEV_WATCHDOG           35000
329
#define CYG_INIT_DEV_WALLCLOCK          36000
330
// A primary block configuration can be initialized with no need
331
// for per-unit configuration information.
332
#define CYG_INIT_DEV_BLOCK_PRIMARY      37000
333
#define CYG_INIT_DEV_FLASH              CYG_INIT_DEV_BLOCK_PRIMARY
334
// Per-unit configuration data extracted from primary storage.
335
// NOTE: for future use, not implemented yet.
336
#define CYG_INIT_CONFIG                 38000
337
// Secondary block devices may use per-unit configuration data
338
// for e.g. interpreting partition layout. Few devices are expected
339
// to fall into this category. Note that these devices, as well as
340
// some char devices, may not actually be usable until interrupts
341
// are enabled.
342
#define CYG_INIT_DEV_BLOCK_SECONDARY    40000
343
// Char devices are everything else: serial, ethernet, CAN, ...
344
#define CYG_INIT_DEV_CHAR               41000
345
// For backwards compatibility. Subject to change in future so
346
// a CYG_INIT_DEV_ priority should be used instead.
347
#define CYG_INIT_DRIVERS                48000
348
// CYG_INIT_IO and CYG_INIT_IO_FS are poorly defined at present,
349
// and may get reorganized in future.
350
#define CYG_INIT_IO                     49000
351
#define CYG_INIT_IO_FS                  50000
352
// The I/O subsystems and device drivers have been initialized.
353
#define CYG_INIT_LIBC                   56000
354
#define CYG_INIT_COMPAT                 58000
355
#define CYG_INIT_APPLICATION            60000
356
#define CYG_INIT_PREDEFAULT             65534
357
#define CYG_INIT_DEFAULT                65535
358
 
359
// -------------------------------------------------------------------------
360
// Label name macros. Some toolsets generate labels with initial
361
// underscores and others don't. CYG_LABEL_NAME should be used on
362
// labels in C/C++ code that are defined in assembly code or linker
363
// scripts. CYG_LABEL_DEFN is for use in assembly code and linker
364
// scripts where we need to manufacture labels that can be used from
365
// C/C++.
366
// These are default implementations that should work for most targets.
367
// They may be overridden in basetype.h if necessary.
368
 
369
#ifndef CYG_LABEL_NAME
370
 
371
#define CYG_LABEL_NAME(_name_) _name_
372
 
373
#endif
374
 
375
#ifndef CYG_LABEL_DEFN
376
 
377
#define CYG_LABEL_DEFN(_label) _label
378
 
379
#endif
380
 
381
// -------------------------------------------------------------------------
382
// COMPILER-SPECIFIC STUFF
383
 
384
#ifdef __GNUC__
385
// Force a 'C' routine to be called like a 'C++' contructor
386
# if !defined(CYGBLD_ATTRIB_CONSTRUCTOR)
387
#  define CYGBLD_ATTRIB_CONSTRUCTOR __attribute__((constructor))
388
# endif
389
 
390
// Define a compiler-specific rune for saying a function doesn't return
391
# if !defined(CYGBLD_ATTRIB_NORET)
392
#  define CYGBLD_ATTRIB_NORET __attribute__((noreturn))
393
# endif
394
 
395
// How to define weak symbols - this is only relevant for ELF and a.out,
396
// but that won't be a problem for eCos
397
# if !defined(CYGBLD_ATTRIB_WEAK)
398
#  define CYGBLD_ATTRIB_WEAK __attribute__ ((weak))
399
# endif
400
 
401
// How to define alias to symbols. Just pass in the symbol itself, not
402
// the string name of the symbol
403
# if !defined(CYGBLD_ATTRIB_ALIAS)
404
#  define CYGBLD_ATTRIB_ALIAS(__symbol__) \
405
        __attribute__ ((alias (#__symbol__)))
406
# endif
407
 
408
// This effectively does the reverse of the previous macro. It defines
409
// a name that the attributed variable or function will actually have
410
// in assembler.
411
# if !defined(CYGBLD_ATTRIB_ASM_ALIAS)
412
#  define __Str(x) #x
413
#  define __Xstr(x) __Str(x)
414
#  define CYGBLD_ATTRIB_ASM_ALIAS(__symbol__) \
415
             __asm__ ( __Xstr( CYG_LABEL_DEFN( __symbol__ ) ) )
416
# endif
417
 
418
// Shows that a function returns the same value when given the same args, but
419
// note this can't be used if there are pointer args
420
# if !defined(CYGBLD_ATTRIB_CONST)
421
#  define CYGBLD_ATTRIB_CONST __attribute__((const))
422
#endif
423
 
424
// Assign a defined variable to a specific section
425
# if !defined(CYGBLD_ATTRIB_SECTION)
426
#  define CYGBLD_ATTRIB_SECTION(__sect__) __attribute__((section (__sect__)))
427
# endif
428
 
429
// Give a type or object explicit minimum alignment
430
# if !defined(CYGBLD_ATTRIB_ALIGN)
431
#  define CYGBLD_ATTRIB_ALIGN(__align__) __attribute__((aligned(__align__)))
432
# endif
433
 
434
# if !defined(CYGBLD_ATTRIB_ALIGN_MAX)
435
#  define CYGBLD_ATTRIB_ALIGN_MAX __attribute__((aligned))
436
# endif
437
 
438
# if !defined(CYGBLD_ATTRIB_ALIGNOFTYPE)
439
#  define CYGBLD_ATTRIB_ALIGNOFTYPE( _type_ ) \
440
     __attribute__((aligned(__alignof__( _type_ ))))
441
# endif
442
 
443
// Teach compiler how to check format of printf-like functions
444
# define CYGBLD_ATTRIB_PRINTF_FORMAT(__format__, __args__) \
445
        __attribute__((format (printf, __format__, __args__)))
446
 
447
// Teach compiler how to check format of scanf-like functions
448
# define CYGBLD_ATTRIB_SCANF_FORMAT(__format__, __args__) \
449
        __attribute__((format (scanf, __format__, __args__)))
450
 
451
// Teach compiler how to check format of strftime-like functions
452
# define CYGBLD_ATTRIB_STRFTIME_FORMAT(__format__, __args__) \
453
        __attribute__((format (strftime, __format__, __args__)))
454
 
455
// Tell compiler not to warn us about an unused variable -- generally
456
// because it will be used when sources are build under certain
457
// circumstances (e.g. with debugging or asserts enabled.
458
# define CYGBLD_ATTRIB_UNUSED  __attribute__((unused))
459
 
460
// Tell the compiler not to throw away a variable or function. Only known
461
// available on 3.3.2 or above. Old version's didn't throw them away,
462
// but using the unused attribute should stop warnings.
463
# if !defined(CYGBLD_ATTRIB_USED)
464
#  if __GNUC_VERSION__ >= 30302
465
#   define CYGBLD_ATTRIB_USED __attribute__((used))
466
#  else
467
#   define CYGBLD_ATTRIB_USED __attribute__((unused))
468
#  endif
469
# endif 
470
#else // non-GNU
471
 
472
# define CYGBLD_ATTRIB_UNUSED  /* nothing */
473
 
474
# define CYGBLD_ATTRIB_CONSTRUCTOR
475
 
476
# define CYGBLD_ATTRIB_NORET
477
    // This intentionally gives an error only if we actually try to
478
    // use it.  #error would give an error if we simply can't.
479
// FIXME: Had to disarm the bomb - the CYGBLD_ATTRIB_WEAK macro is now
480
//        (indirectly) used in host tools.
481
# define CYGBLD_ATTRIB_WEAK /* !!!-- Attribute weak not defined --!!! */
482
 
483
# define CYGBLD_ATTRIB_ALIAS(__x__) !!!-- Attribute alias not defined --!!!
484
 
485
# define CYGBLD_ATTRIB_ASM_ALIAS(__symbol__) !!!-- Asm alias not defined --!!!
486
 
487
# define CYGBLD_ATTRIB_CONST
488
 
489
# define CYGBLD_ATTRIB_ALIGN(__align__) !!!-- Alignment alias not defined --!!!
490
 
491
# define CYGBLD_ATTRIB_ALIGN_MAX !!!-- Alignment alias not defined --!!!
492
 
493
# define CYGBLD_ATTRIB_ALIGNOFTYPE( _type_ ) !!!-- Alignment alias not defined --!!!
494
 
495
# define CYGBLD_ATTRIB_PRINTF_FORMAT(__format__, __args__)
496
 
497
# define CYGBLD_ATTRIB_SCANF_FORMAT(__format__, __args__)
498
 
499
# define CYGBLD_ATTRIB_STRFTIME_FORMAT(__format__, __args__)
500
 
501
 
502
#endif
503
 
504
// How to define weak aliases. Currently this is simply a mixture of the
505
// above
506
 
507
# define CYGBLD_ATTRIB_WEAK_ALIAS(__symbol__) \
508
        CYGBLD_ATTRIB_WEAK CYGBLD_ATTRIB_ALIAS(__symbol__)
509
 
510
#ifdef __cplusplus
511
# define __THROW throw()
512
#else
513
# define __THROW
514
#endif
515
 
516
// -------------------------------------------------------------------------
517
// Variable annotations
518
// These annotations may be added to various static variables in the
519
// HAL and kernel to indicate which component they belong to. These
520
// are used by some targets to optimize memory placement of these
521
// variables.
522
 
523
#ifndef CYGBLD_ANNOTATE_VARIABLE_HAL
524
#define CYGBLD_ANNOTATE_VARIABLE_HAL
525
#endif
526
#ifndef CYGBLD_ANNOTATE_VARIABLE_SCHED
527
#define CYGBLD_ANNOTATE_VARIABLE_SCHED
528
#endif
529
#ifndef CYGBLD_ANNOTATE_VARIABLE_CLOCK
530
#define CYGBLD_ANNOTATE_VARIABLE_CLOCK
531
#endif
532
#ifndef CYGBLD_ANNOTATE_VARIABLE_INTR
533
#define CYGBLD_ANNOTATE_VARIABLE_INTR
534
#endif
535
 
536
// -------------------------------------------------------------------------
537
// Various "flavours" of memory regions that can be described by the 
538
// Memory Layout Tool (MLT).
539
 
540
#define CYGMEM_REGION_ATTR_R  0x01  // Region can be read
541
#define CYGMEM_REGION_ATTR_W  0x02  // Region can be written
542
 
543
// -------------------------------------------------------------------------
544
#endif // CYGONCE_INFRA_CYG_TYPE_H multiple inclusion protection
545
// EOF cyg_type.h

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