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source: vbox/trunk/include/iprt/types.h@ 13835

Last change on this file since 13835 was 13832, checked in by vboxsync, 16 years ago

IN_GC -> IN_RC.

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File size: 38.4 KB
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1/** @file
2 * IPRT - Types.
3 */
4
5/*
6 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
7 *
8 * This file is part of VirtualBox Open Source Edition (OSE), as
9 * available from http://www.virtualbox.org. This file is free software;
10 * you can redistribute it and/or modify it under the terms of the GNU
11 * General Public License (GPL) as published by the Free Software
12 * Foundation, in version 2 as it comes in the "COPYING" file of the
13 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15 *
16 * The contents of this file may alternatively be used under the terms
17 * of the Common Development and Distribution License Version 1.0
18 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19 * VirtualBox OSE distribution, in which case the provisions of the
20 * CDDL are applicable instead of those of the GPL.
21 *
22 * You may elect to license modified versions of this file under the
23 * terms and conditions of either the GPL or the CDDL or both.
24 *
25 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
26 * Clara, CA 95054 USA or visit http://www.sun.com if you need
27 * additional information or have any questions.
28 */
29
30#ifndef ___iprt_types_h
31#define ___iprt_types_h
32
33#include <iprt/cdefs.h>
34#include <iprt/stdint.h>
35
36/*
37 * Include standard C types.
38 */
39#ifndef IPRT_NO_CRT
40
41# if defined(RT_OS_DARWIN) && defined(KERNEL)
42 /*
43 * Kludge for the darwin kernel:
44 * stddef.h is missing IIRC.
45 */
46# ifndef _PTRDIFF_T
47# define _PTRDIFF_T
48 typedef __darwin_ptrdiff_t ptrdiff_t;
49# endif
50# include <sys/types.h>
51
52# elif defined(RT_OS_FREEBSD) && defined(_KERNEL)
53 /*
54 * Kludge for the FreeBSD kernel:
55 * stddef.h and sys/types.h has sligtly different offsetof definitions
56 * when compiling in kernel mode. This is just to make GCC keep shut.
57 */
58# ifndef _STDDEF_H_
59# undef offsetof
60# endif
61# include <stddef.h>
62# ifndef _SYS_TYPES_H_
63# undef offsetof
64# endif
65# include <sys/types.h>
66# ifndef offsetof
67# error "offsetof is not defined..."
68# endif
69
70# elif defined(RT_OS_LINUX) && defined(__KERNEL__)
71 /*
72 * Kludge for the linux kernel:
73 * 1. sys/types.h doesn't mix with the kernel.
74 * 2. Starting with 2.6.19, linux/types.h typedefs bool and linux/stddef.h
75 * declares false and true as enum values.
76 * 3. Starting with 2.6.24, linux/types.h typedefs uintptr_t.
77 * We work around these issues here and nowhere else.
78 */
79# include <stddef.h>
80# if defined(__cplusplus)
81 typedef bool _Bool;
82# endif
83# define bool linux_bool
84# define true linux_true
85# define false linux_false
86# define uintptr_t linux_uintptr_t
87# include <linux/autoconf.h>
88# include <linux/types.h>
89# include <linux/stddef.h>
90# undef uintptr_t
91# undef false
92# undef true
93# undef bool
94
95# else
96# include <stddef.h>
97# include <sys/types.h>
98# endif
99
100/* Define any types missing from sys/types.h on windows. */
101# ifdef _MSC_VER
102# undef ssize_t
103 typedef intptr_t ssize_t;
104# endif
105
106#else /* no crt */
107# include <iprt/nocrt/compiler/gcc.h>
108#endif /* no crt */
109
110
111
112/** @defgroup grp_rt_types IPRT Base Types
113 * @{
114 */
115
116/* define wchar_t, we don't wanna include all the wcsstuff to get this. */
117#ifdef _MSC_VER
118# ifndef _WCHAR_T_DEFINED
119 typedef unsigned short wchar_t;
120# define _WCHAR_T_DEFINED
121# endif
122#endif
123#ifdef __GNUC__
124/** @todo wchar_t on GNUC */
125#endif
126
127/*
128 * C doesn't have bool.
129 */
130#ifndef __cplusplus
131# if defined(__GNUC__)
132# if defined(RT_OS_LINUX) && __GNUC__ < 3
133typedef uint8_t bool;
134# else
135# if defined(RT_OS_DARWIN) && defined(_STDBOOL_H)
136# undef bool
137# endif
138typedef _Bool bool;
139# endif
140# else
141typedef unsigned char bool;
142# endif
143# ifndef true
144# define true (1)
145# endif
146# ifndef false
147# define false (0)
148# endif
149#endif
150
151/**
152 * 128-bit unsigned integer.
153 */
154#if defined(__GNUC__) && defined(RT_ARCH_AMD64)
155typedef __uint128_t uint128_t;
156#else
157typedef struct uint128_s
158{
159 uint64_t Lo;
160 uint64_t Hi;
161} uint128_t;
162#endif
163
164
165/**
166 * 128-bit signed integer.
167 */
168#if defined(__GNUC__) && defined(RT_ARCH_AMD64)
169typedef __int128_t int128_t;
170#else
171typedef struct int128_s
172{
173 uint64_t lo;
174 int64_t hi;
175} int128_t;
176#endif
177
178
179/**
180 * 16-bit unsigned interger union.
181 */
182typedef union RTUINT16U
183{
184 /** natural view. */
185 uint16_t u;
186
187 /** 16-bit view. */
188 uint16_t au16[1];
189 /** 8-bit view. */
190 uint8_t au8[4];
191 /** 16-bit hi/lo view. */
192 struct
193 {
194 uint16_t Lo;
195 uint16_t Hi;
196 } s;
197} RTUINT16U;
198/** Pointer to a 16-bit unsigned interger union. */
199typedef RTUINT16U *PRTUINT16U;
200/** Pointer to a const 32-bit unsigned interger union. */
201typedef const RTUINT16U *PCRTUINT16U;
202
203
204/**
205 * 32-bit unsigned interger union.
206 */
207typedef union RTUINT32U
208{
209 /** natural view. */
210 uint32_t u;
211 /** Hi/Low view. */
212 struct
213 {
214 uint16_t Lo;
215 uint16_t Hi;
216 } s;
217 /** Word view. */
218 struct
219 {
220 uint16_t w0;
221 uint16_t w1;
222 } Words;
223
224 /** 32-bit view. */
225 uint32_t au32[1];
226 /** 16-bit view. */
227 uint16_t au16[2];
228 /** 8-bit view. */
229 uint8_t au8[4];
230} RTUINT32U;
231/** Pointer to a 32-bit unsigned interger union. */
232typedef RTUINT32U *PRTUINT32U;
233/** Pointer to a const 32-bit unsigned interger union. */
234typedef const RTUINT32U *PCRTUINT32U;
235
236
237/**
238 * 64-bit unsigned interger union.
239 */
240typedef union RTUINT64U
241{
242 /** Natural view. */
243 uint64_t u;
244 /** Hi/Low view. */
245 struct
246 {
247 uint32_t Lo;
248 uint32_t Hi;
249 } s;
250 /** Double-Word view. */
251 struct
252 {
253 uint32_t dw0;
254 uint32_t dw1;
255 } DWords;
256 /** Word view. */
257 struct
258 {
259 uint16_t w0;
260 uint16_t w1;
261 uint16_t w2;
262 uint16_t w3;
263 } Words;
264
265 /** 64-bit view. */
266 uint64_t au64[1];
267 /** 32-bit view. */
268 uint32_t au32[2];
269 /** 16-bit view. */
270 uint16_t au16[4];
271 /** 8-bit view. */
272 uint8_t au8[8];
273} RTUINT64U;
274/** Pointer to a 64-bit unsigned interger union. */
275typedef RTUINT64U *PRTUINT64U;
276/** Pointer to a const 64-bit unsigned interger union. */
277typedef const RTUINT64U *PCRTUINT64U;
278
279
280/**
281 * 128-bit unsigned interger union.
282 */
283typedef union RTUINT128U
284{
285 /** Natural view.
286 * WARNING! This member depends on compiler supporing 128-bit stuff. */
287 uint128_t u;
288 /** Hi/Low view. */
289 struct
290 {
291 uint64_t Lo;
292 uint64_t Hi;
293 } s;
294 /** Quad-Word view. */
295 struct
296 {
297 uint64_t qw0;
298 uint64_t qw1;
299 } QWords;
300 /** Double-Word view. */
301 struct
302 {
303 uint32_t dw0;
304 uint32_t dw1;
305 uint32_t dw2;
306 uint32_t dw3;
307 } DWords;
308 /** Word view. */
309 struct
310 {
311 uint16_t w0;
312 uint16_t w1;
313 uint16_t w2;
314 uint16_t w3;
315 uint16_t w4;
316 uint16_t w5;
317 uint16_t w6;
318 uint16_t w7;
319 } Words;
320
321 /** 64-bit view. */
322 uint64_t au64[2];
323 /** 32-bit view. */
324 uint32_t au32[4];
325 /** 16-bit view. */
326 uint16_t au16[8];
327 /** 8-bit view. */
328 uint8_t au8[16];
329} RTUINT128U;
330/** Pointer to a 64-bit unsigned interger union. */
331typedef RTUINT128U *PRTUINT128U;
332/** Pointer to a const 64-bit unsigned interger union. */
333typedef const RTUINT128U *PCRTUINT128U;
334
335
336/** Generic function type.
337 * @see PFNRT
338 */
339typedef DECLCALLBACK(void) FNRT(void);
340
341/** Generic function pointer.
342 * With -pedantic, gcc-4 complains when casting a function to a data object, for example
343 *
344 * @code
345 * void foo(void)
346 * {
347 * }
348 *
349 * void *bar = (void *)foo;
350 * @endcode
351 *
352 * The compiler would warn with "ISO C++ forbids casting between pointer-to-function and
353 * pointer-to-object". The purpose of this warning is not to bother the programmer but to
354 * point out that he is probably doing something dangerous, assigning a pointer to executable
355 * code to a data object.
356 */
357typedef FNRT *PFNRT;
358
359
360/** @defgroup grp_rt_types_both Common Guest and Host Context Basic Types
361 * @ingroup grp_rt_types
362 * @{
363 */
364
365/** Signed integer which can contain both GC and HC pointers. */
366#if (HC_ARCH_BITS == 32 && GC_ARCH_BITS == 32)
367typedef int32_t RTINTPTR;
368#elif (HC_ARCH_BITS == 64 || GC_ARCH_BITS == 64)
369typedef int64_t RTINTPTR;
370#else
371# error Unsupported HC_ARCH_BITS and/or GC_ARCH_BITS values.
372#endif
373/** Pointer to signed integer which can contain both GC and HC pointers. */
374typedef RTINTPTR *PRTINTPTR;
375/** Pointer const to signed integer which can contain both GC and HC pointers. */
376typedef const RTINTPTR *PCRTINTPTR;
377
378/** Unsigned integer which can contain both GC and HC pointers. */
379#if (HC_ARCH_BITS == 32 && GC_ARCH_BITS == 32)
380typedef uint32_t RTUINTPTR;
381#elif (HC_ARCH_BITS == 64 || GC_ARCH_BITS == 64)
382typedef uint64_t RTUINTPTR;
383#else
384# error Unsupported HC_ARCH_BITS and/or GC_ARCH_BITS values.
385#endif
386/** Pointer to unsigned integer which can contain both GC and HC pointers. */
387typedef RTUINTPTR *PRTUINTPTR;
388/** Pointer const to unsigned integer which can contain both GC and HC pointers. */
389typedef const RTUINTPTR *PCRTUINTPTR;
390
391/** Signed integer. */
392typedef int32_t RTINT;
393/** Pointer to signed integer. */
394typedef RTINT *PRTINT;
395/** Pointer to const signed integer. */
396typedef const RTINT *PCRTINT;
397
398/** Unsigned integer. */
399typedef uint32_t RTUINT;
400/** Pointer to unsigned integer. */
401typedef RTUINT *PRTUINT;
402/** Pointer to const unsigned integer. */
403typedef const RTUINT *PCRTUINT;
404
405/** A file offset / size (off_t). */
406typedef int64_t RTFOFF;
407/** Pointer to a file offset / size. */
408typedef RTFOFF *PRTFOFF;
409/** The max value for RTFOFF. */
410#define RTFOFF_MAX INT64_MAX
411/** The min value for RTFOFF. */
412#define RTFOFF_MIN INT64_MIN
413
414/** File mode (see iprt/fs.h). */
415typedef uint32_t RTFMODE;
416/** Pointer to file mode. */
417typedef RTFMODE *PRTFMODE;
418
419/** Device unix number. */
420typedef uint32_t RTDEV;
421/** Pointer to a device unix number. */
422typedef RTDEV *PRTDEV;
423
424/** i-node number. */
425typedef uint64_t RTINODE;
426/** Pointer to a i-node number. */
427typedef RTINODE *PRTINODE;
428
429/** User id. */
430typedef uint32_t RTUID;
431/** Pointer to a user id. */
432typedef RTUID *PRTUID;
433/** NIL user id.
434 * @todo check this for portability! */
435#define NIL_RTUID (~(RTUID)0);
436
437/** Group id. */
438typedef uint32_t RTGID;
439/** Pointer to a group id. */
440typedef RTGID *PRTGID;
441/** NIL group id.
442 * @todo check this for portability! */
443#define NIL_RTGID (~(RTGID)0);
444
445/** I/O Port. */
446typedef uint16_t RTIOPORT;
447/** Pointer to I/O Port. */
448typedef RTIOPORT *PRTIOPORT;
449/** Pointer to const I/O Port. */
450typedef const RTIOPORT *PCRTIOPORT;
451
452/** Selector. */
453typedef uint16_t RTSEL;
454/** Pointer to selector. */
455typedef RTSEL *PRTSEL;
456/** Pointer to const selector. */
457typedef const RTSEL *PCRTSEL;
458/** Max selector value. */
459#define RTSEL_MAX UINT16_MAX
460
461/** Far 16-bit pointer. */
462#pragma pack(1)
463typedef struct RTFAR16
464{
465 uint16_t off;
466 RTSEL sel;
467} RTFAR16;
468#pragma pack()
469/** Pointer to Far 16-bit pointer. */
470typedef RTFAR16 *PRTFAR16;
471/** Pointer to const Far 16-bit pointer. */
472typedef const RTFAR16 *PCRTFAR16;
473
474/** Far 32-bit pointer. */
475#pragma pack(1)
476typedef struct RTFAR32
477{
478 uint32_t off;
479 RTSEL sel;
480} RTFAR32;
481#pragma pack()
482/** Pointer to Far 32-bit pointer. */
483typedef RTFAR32 *PRTFAR32;
484/** Pointer to const Far 32-bit pointer. */
485typedef const RTFAR32 *PCRTFAR32;
486
487/** Far 64-bit pointer. */
488#pragma pack(1)
489typedef struct RTFAR64
490{
491 uint64_t off;
492 RTSEL sel;
493} RTFAR64;
494#pragma pack()
495/** Pointer to Far 64-bit pointer. */
496typedef RTFAR64 *PRTFAR64;
497/** Pointer to const Far 64-bit pointer. */
498typedef const RTFAR64 *PCRTFAR64;
499
500/** @} */
501
502
503/** @defgroup grp_rt_types_hc Host Context Basic Types
504 * @ingroup grp_rt_types
505 * @{
506 */
507
508/** HC Natural signed integer.
509 * @deprecated silly type. */
510typedef int32_t RTHCINT;
511/** Pointer to HC Natural signed integer.
512 * @deprecated silly type. */
513typedef RTHCINT *PRTHCINT;
514/** Pointer to const HC Natural signed integer.
515 * @deprecated silly type. */
516typedef const RTHCINT *PCRTHCINT;
517
518/** HC Natural unsigned integer.
519 * @deprecated silly type. */
520typedef uint32_t RTHCUINT;
521/** Pointer to HC Natural unsigned integer.
522 * @deprecated silly type. */
523typedef RTHCUINT *PRTHCUINT;
524/** Pointer to const HC Natural unsigned integer.
525 * @deprecated silly type. */
526typedef const RTHCUINT *PCRTHCUINT;
527
528
529/** Signed integer which can contain a HC pointer. */
530#if HC_ARCH_BITS == 32
531typedef int32_t RTHCINTPTR;
532#elif HC_ARCH_BITS == 64
533typedef int64_t RTHCINTPTR;
534#else
535# error Unsupported HC_ARCH_BITS value.
536#endif
537/** Pointer to signed interger which can contain a HC pointer. */
538typedef RTHCINTPTR *PRTHCINTPTR;
539/** Pointer to const signed interger which can contain a HC pointer. */
540typedef const RTHCINTPTR *PCRTHCINTPTR;
541
542/** Signed integer which can contain a HC ring-3 pointer. */
543#if R3_ARCH_BITS == 32
544typedef int32_t RTR3INTPTR;
545#elif R3_ARCH_BITS == 64
546typedef int64_t RTR3INTPTR;
547#else
548# error Unsupported R3_ARCH_BITS value.
549#endif
550/** Pointer to signed interger which can contain a HC ring-3 pointer. */
551typedef RTR3INTPTR *PRTR3INTPTR;
552/** Pointer to const signed interger which can contain a HC ring-3 pointer. */
553typedef const RTR3INTPTR *PCRTR3INTPTR;
554
555/** Signed integer which can contain a HC ring-0 pointer. */
556#if R0_ARCH_BITS == 32
557typedef int32_t RTR0INTPTR;
558#elif R0_ARCH_BITS == 64
559typedef int64_t RTR0INTPTR;
560#else
561# error Unsupported R0_ARCH_BITS value.
562#endif
563/** Pointer to signed interger which can contain a HC ring-0 pointer. */
564typedef RTR0INTPTR *PRTR0INTPTR;
565/** Pointer to const signed interger which can contain a HC ring-0 pointer. */
566typedef const RTR0INTPTR *PCRTR0INTPTR;
567
568
569/** Unsigned integer which can contain a HC pointer. */
570#if HC_ARCH_BITS == 32
571typedef uint32_t RTHCUINTPTR;
572#elif HC_ARCH_BITS == 64
573typedef uint64_t RTHCUINTPTR;
574#else
575# error Unsupported HC_ARCH_BITS value.
576#endif
577/** Pointer to unsigned interger which can contain a HC pointer. */
578typedef RTHCUINTPTR *PRTHCUINTPTR;
579/** Pointer to unsigned interger which can contain a HC pointer. */
580typedef const RTHCUINTPTR *PCRTHCUINTPTR;
581
582/** Unsigned integer which can contain a HC ring-3 pointer. */
583#if R3_ARCH_BITS == 32
584typedef uint32_t RTR3UINTPTR;
585#elif R3_ARCH_BITS == 64
586typedef uint64_t RTR3UINTPTR;
587#else
588# error Unsupported R3_ARCH_BITS value.
589#endif
590/** Pointer to unsigned interger which can contain a HC ring-3 pointer. */
591typedef RTR3UINTPTR *PRTR3UINTPTR;
592/** Pointer to unsigned interger which can contain a HC ring-3 pointer. */
593typedef const RTR3UINTPTR *PCRTR3UINTPTR;
594
595/** Unsigned integer which can contain a HC ring-0 pointer. */
596#if R0_ARCH_BITS == 32
597typedef uint32_t RTR0UINTPTR;
598#elif R0_ARCH_BITS == 64
599typedef uint64_t RTR0UINTPTR;
600#else
601# error Unsupported R0_ARCH_BITS value.
602#endif
603/** Pointer to unsigned interger which can contain a HC ring-0 pointer. */
604typedef RTR0UINTPTR *PRTR0UINTPTR;
605/** Pointer to unsigned interger which can contain a HC ring-0 pointer. */
606typedef const RTR0UINTPTR *PCRTR0UINTPTR;
607
608
609/** Host Physical Memory Address. */
610typedef uint64_t RTHCPHYS;
611/** Pointer to Host Physical Memory Address. */
612typedef RTHCPHYS *PRTHCPHYS;
613/** Pointer to const Host Physical Memory Address. */
614typedef const RTHCPHYS *PCRTHCPHYS;
615/** @def NIL_RTHCPHYS
616 * NIL HC Physical Address.
617 * NIL_RTHCPHYS is used to signal an invalid physical address, similar
618 * to the NULL pointer.
619 */
620#define NIL_RTHCPHYS ((RTHCPHYS)~0U) /** @todo change this to (~(VBOXHCPHYS)0) */
621
622
623/** HC pointer. */
624#ifndef IN_RC
625typedef void * RTHCPTR;
626#else
627typedef RTHCUINTPTR RTHCPTR;
628#endif
629/** Pointer to HC pointer. */
630typedef RTHCPTR *PRTHCPTR;
631/** Pointer to const HC pointer. */
632typedef const RTHCPTR *PCRTHCPTR;
633/** @def NIL_RTHCPTR
634 * NIL HC pointer.
635 */
636#define NIL_RTHCPTR ((RTHCPTR)0)
637
638/** HC ring-3 pointer. */
639#ifdef IN_RING3
640typedef void * RTR3PTR;
641#else
642typedef RTR3UINTPTR RTR3PTR;
643#endif
644/** Pointer to HC ring-3 pointer. */
645typedef RTR3PTR *PRTR3PTR;
646/** Pointer to const HC ring-3 pointer. */
647typedef const RTR3PTR *PCRTR3PTR;
648/** @def NIL_RTR3PTR
649 * NIL HC ring-3 pointer.
650 */
651#define NIL_RTR3PTR ((RTR3PTR)0)
652
653/** HC ring-0 pointer. */
654#ifdef IN_RING0
655typedef void * RTR0PTR;
656#else
657typedef RTR0UINTPTR RTR0PTR;
658#endif
659/** Pointer to HC ring-0 pointer. */
660typedef RTR0PTR *PRTR0PTR;
661/** Pointer to const HC ring-0 pointer. */
662typedef const RTR0PTR *PCRTR0PTR;
663/** @def NIL_RTR0PTR
664 * NIL HC ring-0 pointer.
665 */
666#define NIL_RTR0PTR ((RTR0PTR)0)
667
668
669/** Unsigned integer register in the host context. */
670#if HC_ARCH_BITS == 32
671typedef uint32_t RTHCUINTREG;
672#elif HC_ARCH_BITS == 64
673typedef uint64_t RTHCUINTREG;
674#else
675# error "Unsupported HC_ARCH_BITS!"
676#endif
677/** Pointer to an unsigned integer register in the host context. */
678typedef RTHCUINTREG *PRTHCUINTREG;
679/** Pointer to a const unsigned integer register in the host context. */
680typedef const RTHCUINTREG *PCRTHCUINTREG;
681
682/** Unsigned integer register in the host ring-3 context. */
683#if R3_ARCH_BITS == 32
684typedef uint32_t RTR3UINTREG;
685#elif R3_ARCH_BITS == 64
686typedef uint64_t RTR3UINTREG;
687#else
688# error "Unsupported R3_ARCH_BITS!"
689#endif
690/** Pointer to an unsigned integer register in the host ring-3 context. */
691typedef RTR3UINTREG *PRTR3UINTREG;
692/** Pointer to a const unsigned integer register in the host ring-3 context. */
693typedef const RTR3UINTREG *PCRTR3UINTREG;
694
695/** Unsigned integer register in the host ring-3 context. */
696#if R0_ARCH_BITS == 32
697typedef uint32_t RTR0UINTREG;
698#elif R0_ARCH_BITS == 64
699typedef uint64_t RTR0UINTREG;
700#else
701# error "Unsupported R3_ARCH_BITS!"
702#endif
703/** Pointer to an unsigned integer register in the host ring-3 context. */
704typedef RTR0UINTREG *PRTR0UINTREG;
705/** Pointer to a const unsigned integer register in the host ring-3 context. */
706typedef const RTR0UINTREG *PCRTR0UINTREG;
707
708/** @} */
709
710
711/** @defgroup grp_rt_types_gc Guest Context Basic Types
712 * @ingroup grp_rt_types
713 * @{
714 */
715
716/** Natural signed integer in the GC.
717 * @deprecated silly type. */
718#if GC_ARCH_BITS == 32
719typedef int32_t RTGCINT;
720#elif GC_ARCH_BITS == 64 /** @todo this isn't right, natural int is 32-bit, see RTHCINT. */
721typedef int64_t RTGCINT;
722#endif
723/** Pointer to natural signed interger in GC.
724 * @deprecated silly type. */
725typedef RTGCINT *PRTGCINT;
726/** Pointer to const natural signed interger in GC.
727 * @deprecated silly type. */
728typedef const RTGCINT *PCRTGCINT;
729
730/** Natural unsigned integer in the GC.
731 * @deprecated silly type. */
732#if GC_ARCH_BITS == 32
733typedef uint32_t RTGCUINT;
734#elif GC_ARCH_BITS == 64 /** @todo this isn't right, natural int is 32-bit, see RTHCUINT. */
735typedef uint64_t RTGCUINT;
736#endif
737/** Pointer to natural unsigned integer in GC.
738 * @deprecated silly type. */
739typedef RTGCUINT *PRTGCUINT;
740/** Pointer to const natural unsigned integer in GC.
741 * @deprecated silly type. */
742typedef const RTGCUINT *PCRTGCUINT;
743
744/** Signed integer which can contain a GC pointer. */
745#if GC_ARCH_BITS == 32
746typedef int32_t RTGCINTPTR;
747#elif GC_ARCH_BITS == 64
748typedef int64_t RTGCINTPTR;
749#endif
750/** Pointer to signed interger which can contain a GC pointer. */
751typedef RTGCINTPTR *PRTGCINTPTR;
752/** Pointer to const signed interger which can contain a GC pointer. */
753typedef const RTGCINTPTR *PCRTGCINTPTR;
754
755/** Unsigned integer which can contain a GC pointer. */
756#if GC_ARCH_BITS == 32
757typedef uint32_t RTGCUINTPTR;
758#elif GC_ARCH_BITS == 64
759typedef uint64_t RTGCUINTPTR;
760#else
761# error Unsupported GC_ARCH_BITS value.
762#endif
763/** Pointer to unsigned interger which can contain a GC pointer. */
764typedef RTGCUINTPTR *PRTGCUINTPTR;
765/** Pointer to unsigned interger which can contain a GC pointer. */
766typedef const RTGCUINTPTR *PCRTGCUINTPTR;
767
768/** Unsigned integer which can contain a 32 bits GC pointer. */
769typedef uint32_t RTGCUINTPTR32;
770/** Pointer to unsigned interger which can contain a 32 bits GC pointer. */
771typedef RTGCUINTPTR32 *PRTGCUINTPTR32;
772/** Pointer to unsigned interger which can contain a 32 bits GC pointer. */
773typedef const RTGCUINTPTR32 *PCRTGCUINTPTR32;
774
775/** Unsigned integer which can contain a 64 bits GC pointer. */
776typedef uint64_t RTGCUINTPTR64;
777/** Pointer to unsigned interger which can contain a 32 bits GC pointer. */
778typedef RTGCUINTPTR64 *PRTGCUINTPTR64;
779/** Pointer to unsigned interger which can contain a 32 bits GC pointer. */
780typedef const RTGCUINTPTR64 *PCRTGCUINTPTR64;
781
782/** Guest Physical Memory Address.*/
783typedef uint64_t RTGCPHYS;
784/** Pointer to Guest Physical Memory Address. */
785typedef RTGCPHYS *PRTGCPHYS;
786/** Pointer to const Guest Physical Memory Address. */
787typedef const RTGCPHYS *PCRTGCPHYS;
788/** @def NIL_RTGCPHYS
789 * NIL GC Physical Address.
790 * NIL_RTGCPHYS is used to signal an invalid physical address, similar
791 * to the NULL pointer. Note that this value may actually be valid in
792 * some contexts.
793 */
794#define NIL_RTGCPHYS (~(RTGCPHYS)0U)
795
796
797/** Guest Physical Memory Address; limited to 32 bits.*/
798typedef uint32_t RTGCPHYS32;
799/** Pointer to Guest Physical Memory Address. */
800typedef RTGCPHYS32 *PRTGCPHYS32;
801/** Pointer to const Guest Physical Memory Address. */
802typedef const RTGCPHYS32 *PCRTGCPHYS32;
803/** @def NIL_RTGCPHYS32
804 * NIL GC Physical Address.
805 * NIL_RTGCPHYS32 is used to signal an invalid physical address, similar
806 * to the NULL pointer. Note that this value may actually be valid in
807 * some contexts.
808 */
809#define NIL_RTGCPHYS32 (~(RTGCPHYS32)0)
810
811
812/** Guest Physical Memory Address; limited to 64 bits.*/
813typedef uint64_t RTGCPHYS64;
814/** Pointer to Guest Physical Memory Address. */
815typedef RTGCPHYS64 *PRTGCPHYS64;
816/** Pointer to const Guest Physical Memory Address. */
817typedef const RTGCPHYS64 *PCRTGCPHYS64;
818/** @def NIL_RTGCPHYS64
819 * NIL GC Physical Address.
820 * NIL_RTGCPHYS64 is used to signal an invalid physical address, similar
821 * to the NULL pointer. Note that this value may actually be valid in
822 * some contexts.
823 */
824#define NIL_RTGCPHYS64 (~(RTGCPHYS64)0)
825
826/** Guest context pointer, 32 bits.
827 * Keep in mind that this type is an unsigned integer in
828 * HC and void pointer in GC.
829 */
830typedef RTGCUINTPTR32 RTGCPTR32;
831/** Pointer to a guest context pointer. */
832typedef RTGCPTR32 *PRTGCPTR32;
833/** Pointer to a const guest context pointer. */
834typedef const RTGCPTR32 *PCRTGCPTR32;
835/** @def NIL_RTGCPTR32
836 * NIL GC pointer.
837 */
838#define NIL_RTGCPTR32 ((RTGCPTR32)0)
839
840/** Guest context pointer, 64 bits.
841 */
842typedef RTGCUINTPTR64 RTGCPTR64;
843/** Pointer to a guest context pointer. */
844typedef RTGCPTR64 *PRTGCPTR64;
845/** Pointer to a const guest context pointer. */
846typedef const RTGCPTR64 *PCRTGCPTR64;
847/** @def NIL_RTGCPTR64
848 * NIL GC pointer.
849 */
850#define NIL_RTGCPTR64 ((RTGCPTR64)0)
851
852/** Guest context pointer.
853 * Keep in mind that this type is an unsigned integer in
854 * HC and void pointer in GC.
855 */
856#if GC_ARCH_BITS == 64
857typedef RTGCPTR64 RTGCPTR;
858/** Pointer to a guest context pointer. */
859typedef PRTGCPTR64 PRTGCPTR;
860/** Pointer to a const guest context pointer. */
861typedef PCRTGCPTR64 PCRTGCPTR;
862/** @def NIL_RTGCPTR
863 * NIL GC pointer.
864 */
865#define NIL_RTGCPTR NIL_RTGCPTR64
866#elif GC_ARCH_BITS == 32
867typedef RTGCPTR32 RTGCPTR;
868/** Pointer to a guest context pointer. */
869typedef PRTGCPTR32 PRTGCPTR;
870/** Pointer to a const guest context pointer. */
871typedef PCRTGCPTR32 PCRTGCPTR;
872/** @def NIL_RTGCPTR
873 * NIL GC pointer.
874 */
875#define NIL_RTGCPTR NIL_RTGCPTR32
876#else
877# error "Unsupported GC_ARCH_BITS!"
878#endif
879
880/** Unsigned integer register in the guest context. */
881typedef uint32_t RTGCUINTREG32;
882/** Pointer to an unsigned integer register in the guest context. */
883typedef RTGCUINTREG32 *PRTGCUINTREG32;
884/** Pointer to a const unsigned integer register in the guest context. */
885typedef const RTGCUINTREG32 *PCRTGCUINTREG32;
886
887typedef uint64_t RTGCUINTREG64;
888/** Pointer to an unsigned integer register in the guest context. */
889typedef RTGCUINTREG64 *PRTGCUINTREG64;
890/** Pointer to a const unsigned integer register in the guest context. */
891typedef const RTGCUINTREG64 *PCRTGCUINTREG64;
892
893#if GC_ARCH_BITS == 64
894typedef RTGCUINTREG64 RTGCUINTREG;
895#elif GC_ARCH_BITS == 32
896typedef RTGCUINTREG32 RTGCUINTREG;
897#else
898# error "Unsupported GC_ARCH_BITS!"
899#endif
900/** Pointer to an unsigned integer register in the guest context. */
901typedef RTGCUINTREG *PRTGCUINTREG;
902/** Pointer to a const unsigned integer register in the guest context. */
903typedef const RTGCUINTREG *PCRTGCUINTREG;
904
905/** @} */
906
907/** @defgroup grp_rt_types_rc Raw mode Context Basic Types
908 * @ingroup grp_rt_types
909 * @{
910 */
911
912/** Raw mode context pointer; a 32 bits guest context pointer.
913 * Keep in mind that this type is an unsigned integer in
914 * HC and void pointer in RC.
915 */
916#ifdef IN_RC
917typedef void * RTRCPTR;
918#else
919typedef uint32_t RTRCPTR;
920#endif
921/** Pointer to a raw mode context pointer. */
922typedef RTRCPTR *PRTRCPTR;
923/** Pointer to a const raw mode context pointer. */
924typedef const RTRCPTR *PCRTRCPTR;
925/** @def NIL_RTGCPTR
926 * NIL RC pointer.
927 */
928#define NIL_RTRCPTR ((RTRCPTR)0)
929/** @def RTRCPTR_MAX
930 * The maximum value a RTRCPTR can have. Mostly used as INVALID value.
931 */
932#define RTRCPTR_MAX ((RTRCPTR)UINT32_MAX)
933
934/** Raw mode context pointer, unsigned integer variant. */
935typedef int32_t RTRCINTPTR;
936/** @def RTRCUINPTR_MAX
937 * The maximum value a RTRCUINPTR can have.
938 */
939#define RTRCUINTPTR_MAX ((RTRCUINTPTR)UINT32_MAX)
940
941/** Raw mode context pointer, signed integer variant. */
942typedef uint32_t RTRCUINTPTR;
943/** @def RTRCINPTR_MIN
944 * The minimum value a RTRCINPTR can have.
945 */
946#define RTRCINTPTR_MIN ((RTRCINTPTR)INT32_MIN)
947/** @def RTRCINPTR_MAX
948 * The maximum value a RTRCINPTR can have.
949 */
950#define RTRCINTPTR_MAX ((RTRCINTPTR)INT32_MAX)
951
952/** @} */
953
954
955/** @defgroup grp_rt_types_cc Current Context Basic Types
956 * @ingroup grp_rt_types
957 * @{
958 */
959
960/** Current Context Physical Memory Address.*/
961#ifdef IN_RC
962typedef RTGCPHYS RTCCPHYS;
963#else
964typedef RTHCPHYS RTCCPHYS;
965#endif
966/** Pointer to Current Context Physical Memory Address. */
967typedef RTCCPHYS *PRTCCPHYS;
968/** Pointer to const Current Context Physical Memory Address. */
969typedef const RTCCPHYS *PCRTCCPHYS;
970/** @def NIL_RTCCPHYS
971 * NIL CC Physical Address.
972 * NIL_RTCCPHYS is used to signal an invalid physical address, similar
973 * to the NULL pointer.
974 */
975#ifdef IN_RC
976# define NIL_RTCCPHYS NIL_RTGCPHYS
977#else
978# define NIL_RTCCPHYS NIL_RTHCPHYS
979#endif
980
981/** Unsigned integer register in the current 32 bits context. */
982typedef uint32_t RTCCUINTREG32;
983/** Pointer to an unsigned integer register in the current context. */
984typedef RTCCUINTREG32 *PRTCCUINTREG32;
985/** Pointer to a const unsigned integer register in the current context. */
986typedef const RTCCUINTREG32 *PCRTCCUINTREG32;
987
988/** Unsigned integer register in the current 64 bits context. */
989typedef uint64_t RTCCUINTREG64;
990/** Pointer to an unsigned integer register in the current context. */
991typedef RTCCUINTREG64 *PRTCCUINTREG64;
992/** Pointer to a const unsigned integer register in the current context. */
993typedef const RTCCUINTREG64 *PCRTCCUINTREG64;
994
995/** Unsigned integer register in the current context. */
996#if ARCH_BITS == 32
997typedef RTCCUINTREG32 RTCCUINTREG;
998/** Pointer to an unsigned integer register in the current context. */
999typedef PRTCCUINTREG32 PRTCCUINTREG;
1000/** Pointer to a const unsigned integer register in the current context. */
1001typedef PCRTCCUINTREG32 PCRTCCUINTREG;
1002#elif ARCH_BITS == 64
1003typedef RTCCUINTREG64 RTCCUINTREG;
1004/** Pointer to an unsigned integer register in the current context. */
1005typedef PRTCCUINTREG64 PRTCCUINTREG;
1006/** Pointer to a const unsigned integer register in the current context. */
1007typedef PCRTCCUINTREG64 PCRTCCUINTREG;
1008#else
1009# error "Unsupported ARCH_BITS!"
1010#endif
1011
1012/** @} */
1013
1014
1015/** File handle. */
1016typedef RTUINT RTFILE;
1017/** Pointer to file handle. */
1018typedef RTFILE *PRTFILE;
1019/** Nil file handle. */
1020#define NIL_RTFILE (~(RTFILE)0)
1021
1022/** Loader module handle. */
1023typedef R3PTRTYPE(struct RTLDRMODINTERNAL *) RTLDRMOD;
1024/** Pointer to a loader module handle. */
1025typedef RTLDRMOD *PRTLDRMOD;
1026/** Nil loader module handle. */
1027#define NIL_RTLDRMOD 0
1028
1029/** Ring-0 memory object handle. */
1030typedef R0PTRTYPE(struct RTR0MEMOBJINTERNAL *) RTR0MEMOBJ;
1031/** Pointer to a Ring-0 memory object handle. */
1032typedef RTR0MEMOBJ *PRTR0MEMOBJ;
1033/** Nil ring-0 memory object handle. */
1034#define NIL_RTR0MEMOBJ 0
1035
1036/** Native thread handle. */
1037typedef RTHCUINTPTR RTNATIVETHREAD;
1038/** Pointer to an native thread handle. */
1039typedef RTNATIVETHREAD *PRTNATIVETHREAD;
1040/** Nil native thread handle. */
1041#define NIL_RTNATIVETHREAD (~(RTNATIVETHREAD)0)
1042
1043/** Process identifier. */
1044typedef uint32_t RTPROCESS;
1045/** Pointer to a process identifier. */
1046typedef RTPROCESS *PRTPROCESS;
1047/** Nil process identifier. */
1048#define NIL_RTPROCESS (~(RTPROCESS)0)
1049
1050/** Process ring-0 handle. */
1051typedef RTR0UINTPTR RTR0PROCESS;
1052/** Pointer to a ring-0 process handle. */
1053typedef RTR0PROCESS *PRTR0PROCESS;
1054/** Nil ring-0 process handle. */
1055#define NIL_RTR0PROCESS (~(RTR0PROCESS)0)
1056
1057/** @typedef RTSEMEVENT
1058 * Event Semaphore handle. */
1059typedef R3R0PTRTYPE(struct RTSEMEVENTINTERNAL *) RTSEMEVENT;
1060/** Pointer to an event semaphore handle. */
1061typedef RTSEMEVENT *PRTSEMEVENT;
1062/** Nil event semaphore handle. */
1063#define NIL_RTSEMEVENT 0
1064
1065/** @typedef RTSEMEVENTMULTI
1066 * Event Multiple Release Semaphore handle. */
1067typedef R3R0PTRTYPE(struct RTSEMEVENTMULTIINTERNAL *) RTSEMEVENTMULTI;
1068/** Pointer to an event multiple release semaphore handle. */
1069typedef RTSEMEVENTMULTI *PRTSEMEVENTMULTI;
1070/** Nil multiple release event semaphore handle. */
1071#define NIL_RTSEMEVENTMULTI 0
1072
1073/** @typedef RTSEMFASTMUTEX
1074 * Fast mutex Semaphore handle. */
1075typedef R3R0PTRTYPE(struct RTSEMFASTMUTEXINTERNAL *) RTSEMFASTMUTEX;
1076/** Pointer to a mutex semaphore handle. */
1077typedef RTSEMFASTMUTEX *PRTSEMFASTMUTEX;
1078/** Nil fast mutex semaphore handle. */
1079#define NIL_RTSEMFASTMUTEX 0
1080
1081/** @typedef RTSEMMUTEX
1082 * Mutex Semaphore handle. */
1083typedef R3R0PTRTYPE(struct RTSEMMUTEXINTERNAL *) RTSEMMUTEX;
1084/** Pointer to a mutex semaphore handle. */
1085typedef RTSEMMUTEX *PRTSEMMUTEX;
1086/** Nil mutex semaphore handle. */
1087#define NIL_RTSEMMUTEX 0
1088
1089/** @typedef RTSEMRW
1090 * Read/Write Semaphore handle. */
1091typedef R3R0PTRTYPE(struct RTSEMRWINTERNAL *) RTSEMRW;
1092/** Pointer to a read/write semaphore handle. */
1093typedef RTSEMRW *PRTSEMRW;
1094/** Nil read/write semaphore handle. */
1095#define NIL_RTSEMRW 0
1096
1097/** Spinlock handle. */
1098typedef R3R0PTRTYPE(struct RTSPINLOCKINTERNAL *) RTSPINLOCK;
1099/** Pointer to a spinlock handle. */
1100typedef RTSPINLOCK *PRTSPINLOCK;
1101/** Nil spinlock handle. */
1102#define NIL_RTSPINLOCK 0
1103
1104/** Socket handle. */
1105typedef int RTSOCKET;
1106/** Pointer to socket handle. */
1107typedef RTSOCKET *PRTSOCKET;
1108/** Nil socket handle. */
1109#define NIL_RTSOCKET (~(RTSOCKET)0)
1110
1111/** Thread handle.*/
1112typedef R3R0PTRTYPE(struct RTTHREADINT *) RTTHREAD;
1113/** Pointer to thread handle. */
1114typedef RTTHREAD *PRTTHREAD;
1115/** Nil thread handle. */
1116#define NIL_RTTHREAD 0
1117
1118/** A TLS index. */
1119typedef int RTTLS;
1120/** Pointer to a TLS index. */
1121typedef RTTLS *PRTTLS;
1122/** Pointer to a const TLS index. */
1123typedef RTTLS const *PCRTTLS;
1124/** NIL TLS index value. */
1125#define NIL_RTTLS (-1)
1126
1127/** Handle to a simple heap. */
1128typedef R3R0PTRTYPE(struct RTHEAPSIMPLEINTERNAL *) RTHEAPSIMPLE;
1129/** Pointer to a handle to a simple heap. */
1130typedef RTHEAPSIMPLE *PRTHEAPSIMPLE;
1131/** NIL simple heap handle. */
1132#define NIL_RTHEAPSIMPLE ((RTHEAPSIMPLE)0)
1133
1134/** Handle to an environment block. */
1135typedef R3PTRTYPE(struct RTENVINTERNAL *) RTENV;
1136/** Pointer to a handle to an environment block. */
1137typedef RTENV *PRTENV;
1138/** NIL simple heap handle. */
1139#define NIL_RTENV ((RTENV)0)
1140
1141/** A CPU identifier.
1142 * @remarks This doesn't have to correspond to the APIC ID (intel/amd). Nor
1143 * does it have to correspond to the bits in the affinity mask, at
1144 * least not until we've sorted out Windows NT. */
1145typedef RTHCUINTPTR RTCPUID;
1146/** Pointer to a CPU identifier. */
1147typedef RTCPUID *PRTCPUID;
1148/** Pointer to a const CPU identifier. */
1149typedef RTCPUID const *PCRTCPUID;
1150/** Nil CPU Id. */
1151#define NIL_RTCPUID ((RTCPUID)~0)
1152
1153/** A CPU set.
1154 * Treat this as an opaque type and always use RTCpuSet* for manupulating it. */
1155typedef uint64_t RTCPUSET;
1156/** Pointer to a CPU set. */
1157typedef RTCPUSET *PRTCPUSET;
1158/** Pointer to a const CPU set. */
1159typedef RTCPUSET const *PCRTCPUSET;
1160
1161/** A handle table handle. */
1162typedef struct RTHANDLETABLEINT *RTHANDLETABLE;
1163/** A pointer to a handle table handle. */
1164typedef RTHANDLETABLE *PRTHANDLETABLE;
1165/** @def NIL_RTHANDLETABLE
1166 * NIL handle table handle. */
1167#define NIL_RTHANDLETABLE ((RTHANDLETABLE)0)
1168
1169/** A handle to a low resolution timer. */
1170typedef struct RTTIMERLRINT *RTTIMERLR;
1171/** A pointer to a low resolution timer handle. */
1172typedef RTTIMERLR *PRTTIMERLR;
1173/** @def NIL_RTTIMERLR
1174 * NIL low resolution timer handle value. */
1175#define NIL_RTTIMERLR ((RTTIMERLR)0)
1176
1177/** Handle to a random number generator. */
1178typedef struct RTRANDINT *RTRAND;
1179/** Pointer to a random number generator handle. */
1180typedef RTRAND *PRTRAND;
1181/** NIL random number genrator handle value. */
1182#define NIL_RTRAND ((RTRAND)0)
1183
1184
1185/**
1186 * UUID data type.
1187 *
1188 * @note IPRT defines that the first three integers in the @c Gen struct
1189 * interpretation are in little endian representation. This is different to
1190 * many other UUID implementation, and requires conversion if you need to
1191 * achieve consistent results.
1192 */
1193typedef union RTUUID
1194{
1195 /** 8-bit view. */
1196 uint8_t au8[16];
1197 /** 16-bit view. */
1198 uint16_t au16[8];
1199 /** 32-bit view. */
1200 uint32_t au32[4];
1201 /** 64-bit view. */
1202 uint64_t au64[2];
1203 /** The way the UUID is declared by the DCE specification. */
1204 struct
1205 {
1206 uint32_t u32TimeLow;
1207 uint16_t u16TimeMid;
1208 uint16_t u16TimeHiAndVersion;
1209 uint8_t u8ClockSeqHiAndReserved;
1210 uint8_t u8ClockSeqLow;
1211 uint8_t au8Node[6];
1212 } Gen;
1213} RTUUID;
1214/** Pointer to UUID data. */
1215typedef RTUUID *PRTUUID;
1216/** Pointer to readonly UUID data. */
1217typedef const RTUUID *PCRTUUID;
1218
1219/**
1220 * UUID string maximum length.
1221 */
1222#define RTUUID_STR_LENGTH 37
1223
1224
1225/** Compression handle. */
1226typedef struct RTZIPCOMP *PRTZIPCOMP;
1227
1228/** Decompressor handle. */
1229typedef struct RTZIPDECOMP *PRTZIPDECOMP;
1230
1231
1232/**
1233 * Unicode Code Point.
1234 */
1235typedef uint32_t RTUNICP;
1236/** Pointer to an Unicode Code Point. */
1237typedef RTUNICP *PRTUNICP;
1238/** Pointer to an Unicode Code Point. */
1239typedef const RTUNICP *PCRTUNICP;
1240
1241
1242/**
1243 * UTF-16 character.
1244 * @remark wchar_t is not usable since it's compiler defined.
1245 * @remark When we use the term character we're not talking about unicode code point, but
1246 * the basic unit of the string encoding. Thus cwc - count of wide chars - means
1247 * count of RTUTF16; cuc - count of unicode chars - means count of RTUNICP;
1248 * and cch means count of the typedef 'char', which is assumed to be an octet.
1249 */
1250typedef uint16_t RTUTF16;
1251/** Pointer to a UTF-16 character. */
1252typedef RTUTF16 *PRTUTF16;
1253/** Pointer to a const UTF-16 character. */
1254typedef const RTUTF16 *PCRTUTF16;
1255
1256
1257/**
1258 * Wait for ever if we have to.
1259 */
1260#define RT_INDEFINITE_WAIT (~0U)
1261
1262
1263/**
1264 * Generic process callback.
1265 *
1266 * @returns VBox status code. Failure will cancel the operation.
1267 * @param uPercentage The percentage of the operation which has been completed.
1268 * @param pvUser The user specified argument.
1269 */
1270typedef DECLCALLBACK(int) FNRTPROGRESS(unsigned uPrecentage, void *pvUser);
1271/** Pointer to a generic progress callback function, FNRTPROCESS(). */
1272typedef FNRTPROGRESS *PFNRTPROGRESS;
1273
1274
1275/**
1276 * Rectangle data type.
1277 */
1278typedef struct RTRECT
1279{
1280 /** left X coordinate. */
1281 int32_t xLeft;
1282 /** top Y coordinate. */
1283 int32_t yTop;
1284 /** right X coordinate. (exclusive) */
1285 int32_t xRight;
1286 /** bottom Y coordinate. (exclusive) */
1287 int32_t yBottom;
1288} RTRECT;
1289/** Pointer to a rectangle. */
1290typedef RTRECT *PRTRECT;
1291/** Pointer to a const rectangle. */
1292typedef const RTRECT *PCRTRECT;
1293
1294
1295/**
1296 * Ethernet MAC address.
1297 *
1298 * The first 24 bits make up the Organisationally Unique Identifier (OUI),
1299 * where the first bit (little endian) indicates multicast (set) / unicast,
1300 * and the second bit indicates locally (set) / global administered. If all
1301 * bits are set, it's a broadcast.
1302 */
1303typedef union RTMAC
1304{
1305 /** @todo add a bitfield view of this stuff. */
1306 /** 8-bit view. */
1307 uint8_t au8[6];
1308 /** 16-bit view. */
1309 uint16_t au16[3];
1310} RTMAC;
1311/** Pointer to a MAC address. */
1312typedef RTMAC *PRTMAC;
1313/** Pointer to a readonly MAC address. */
1314typedef const RTMAC *PCRTMAC;
1315
1316/** @} */
1317
1318#endif
1319
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