cdefs.h@ 42419

Last change on this file since 42419 was 41307, checked in by vboxsync, 13 years ago
Runtime/common/log/log: make g_Logger weak which is the better solution
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1	/** @file
2	* IPRT - Common C and C++ definitions.
3	*/
4
5	/*
6	* Copyright (C) 2006-2010 Oracle Corporation
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
26	#ifndef ___iprt_cdefs_h
27	#define ___iprt_cdefs_h
28
29
30	/** @defgroup grp_rt_cdefs IPRT Common Definitions and Macros
31	* @{
32	*/
33
34	/*
35	* Include sys/cdefs.h if present, if not define the stuff we need.
36	*/
37	#ifdef HAVE_SYS_CDEFS_H
38	# if defined(RT_ARCH_LINUX) && defined(__KERNEL__)
39	# error "oops"
40	# endif
41	# include <sys/cdefs.h>
42	#else
43
44	/** @def RT_C_DECLS_BEGIN
45	* Used to start a block of function declarations which are shared
46	* between C and C++ program.
47	*/
48
49	/** @def RT_C_DECLS_END
50	* Used to end a block of function declarations which are shared
51	* between C and C++ program.
52	*/
53
54	# if defined(__cplusplus)
55	# define RT_C_DECLS_BEGIN extern "C" {
56	# define RT_C_DECLS_END }
57	# else
58	# define RT_C_DECLS_BEGIN
59	# define RT_C_DECLS_END
60	# endif
61
62	#endif
63
64
65	/*
66	* Shut up DOXYGEN warnings and guide it properly thru the code.
67	*/
68	#ifdef DOXYGEN_RUNNING
69	# define __AMD64__
70	# define __X86__
71	# define RT_ARCH_AMD64
72	# define RT_ARCH_X86
73	# define IN_RING0
74	# define IN_RING3
75	# define IN_RC
76	# define IN_RC
77	# define IN_RT_RC
78	# define IN_RT_R0
79	# define IN_RT_R3
80	# define IN_RT_STATIC
81	# define RT_STRICT
82	# define RT_NO_STRICT
83	# define RT_LOCK_STRICT
84	# define RT_LOCK_NO_STRICT
85	# define RT_LOCK_STRICT_ORDER
86	# define RT_LOCK_NO_STRICT_ORDER
87	# define Breakpoint
88	# define RT_NO_DEPRECATED_MACROS
89	# define RT_EXCEPTIONS_ENABLED
90	# define RT_BIG_ENDIAN
91	# define RT_LITTLE_ENDIAN
92	# define RT_COMPILER_GROKS_64BIT_BITFIELDS
93	# define RT_COMPILER_WITH_80BIT_LONG_DOUBLE
94	# define RT_NO_VISIBILITY_HIDDEN
95	#endif /* DOXYGEN_RUNNING */
96
97	/** @def RT_ARCH_X86
98	* Indicates that we're compiling for the X86 architecture.
99	*/
100
101	/** @def RT_ARCH_AMD64
102	* Indicates that we're compiling for the AMD64 architecture.
103	*/
104
105	/** @def RT_ARCH_SPARC
106	* Indicates that we're compiling for the SPARC V8 architecture (32-bit).
107	*/
108
109	/** @def RT_ARCH_SPARC64
110	* Indicates that we're compiling for the SPARC V9 architecture (64-bit).
111	*/
112	#if !defined(RT_ARCH_X86) \
113	&& !defined(RT_ARCH_AMD64) \
114	&& !defined(RT_ARCH_SPARC) \
115	&& !defined(RT_ARCH_SPARC64) \
116	&& !defined(RT_ARCH_ARM)
117	# if defined(__amd64__) \|\| defined(__x86_64__) \|\| defined(_M_X64) \|\| defined(__AMD64__)
118	# define RT_ARCH_AMD64
119	# elif defined(__i386__) \|\| defined(_M_IX86) \|\| defined(__X86__)
120	# define RT_ARCH_X86
121	# elif defined(__sparcv9)
122	# define RT_ARCH_SPARC64
123	# elif defined(__sparc__)
124	# define RT_ARCH_SPARC
125	# elif defined(__arm__) \|\| defined(__arm32__)
126	# define RT_ARCH_ARM
127	# else /* PORTME: append test for new archs. */
128	# error "Check what predefined macros your compiler uses to indicate architecture."
129	# endif
130	/* PORTME: append new archs checks. */
131	#elif defined(RT_ARCH_X86) && defined(RT_ARCH_AMD64)
132	# error "Both RT_ARCH_X86 and RT_ARCH_AMD64 cannot be defined at the same time!"
133	#elif defined(RT_ARCH_X86) && defined(RT_ARCH_SPARC)
134	# error "Both RT_ARCH_X86 and RT_ARCH_SPARC cannot be defined at the same time!"
135	#elif defined(RT_ARCH_X86) && defined(RT_ARCH_SPARC64)
136	# error "Both RT_ARCH_X86 and RT_ARCH_SPARC64 cannot be defined at the same time!"
137	#elif defined(RT_ARCH_AMD64) && defined(RT_ARCH_SPARC)
138	# error "Both RT_ARCH_AMD64 and RT_ARCH_SPARC cannot be defined at the same time!"
139	#elif defined(RT_ARCH_AMD64) && defined(RT_ARCH_SPARC64)
140	# error "Both RT_ARCH_AMD64 and RT_ARCH_SPARC64 cannot be defined at the same time!"
141	#elif defined(RT_ARCH_SPARC) && defined(RT_ARCH_SPARC64)
142	# error "Both RT_ARCH_SPARC and RT_ARCH_SPARC64 cannot be defined at the same time!"
143	#elif defined(RT_ARCH_ARM) && defined(RT_ARCH_AMD64)
144	# error "Both RT_ARCH_ARM and RT_ARCH_AMD64 cannot be defined at the same time!"
145	#elif defined(RT_ARCH_ARM) && defined(RT_ARCH_X86)
146	# error "Both RT_ARCH_ARM and RT_ARCH_X86 cannot be defined at the same time!"
147	#elif defined(RT_ARCH_ARM) && defined(RT_ARCH_SPARC64)
148	# error "Both RT_ARCH_ARM and RT_ARCH_SPARC64 cannot be defined at the same time!"
149	#elif defined(RT_ARCH_ARM) && defined(RT_ARCH_SPARC)
150	# error "Both RT_ARCH_ARM and RT_ARCH_SPARC cannot be defined at the same time!"
151	#endif
152
153
154	/** @def __X86__
155	* Indicates that we're compiling for the X86 architecture.
156	* @deprecated
157	*/
158
159	/** @def __AMD64__
160	* Indicates that we're compiling for the AMD64 architecture.
161	* @deprecated
162	*/
163	#if !defined(__X86__) && !defined(__AMD64__) && (defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86))
164	# if defined(RT_ARCH_AMD64)
165	# define __AMD64__
166	# elif defined(RT_ARCH_X86)
167	# define __X86__
168	# else
169	# error "Check what predefined macros your compiler uses to indicate architecture."
170	# endif
171	#elif defined(__X86__) && defined(__AMD64__)
172	# error "Both __X86__ and __AMD64__ cannot be defined at the same time!"
173	#elif defined(__X86__) && !defined(RT_ARCH_X86)
174	# error "__X86__ without RT_ARCH_X86!"
175	#elif defined(__AMD64__) && !defined(RT_ARCH_AMD64)
176	# error "__AMD64__ without RT_ARCH_AMD64!"
177	#endif
178
179	/** @def RT_BIG_ENDIAN
180	* Defined if the architecture is big endian. */
181	/** @def RT_LITTLE_ENDIAN
182	* Defined if the architecture is little endian. */
183	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86) \|\| defined(RT_ARCH_ARM)
184	# define RT_LITTLE_ENDIAN
185	#elif defined(RT_ARCH_SPARC) \|\| defined(RT_ARCH_SPARC64)
186	# define RT_BIG_ENDIAN
187	#else
188	# error "PORTME: architecture endianess"
189	#endif
190	#if defined(RT_BIG_ENDIAN) && defined(RT_LITTLE_ENDIAN)
191	# error "Both RT_BIG_ENDIAN and RT_LITTLE_ENDIAN are defined"
192	#endif
193
194
195	/** @def IN_RING0
196	* Used to indicate that we're compiling code which is running
197	* in Ring-0 Host Context.
198	*/
199
200	/** @def IN_RING3
201	* Used to indicate that we're compiling code which is running
202	* in Ring-3 Host Context.
203	*/
204
205	/** @def IN_RC
206	* Used to indicate that we're compiling code which is running
207	* in the Raw-mode Context (implies R0).
208	*/
209	#if !defined(IN_RING3) && !defined(IN_RING0) && !defined(IN_RC) && !defined(IN_RC)
210	# error "You must define which context the compiled code should run in; IN_RING3, IN_RING0 or IN_RC"
211	#endif
212	#if (defined(IN_RING3) && (defined(IN_RING0) \|\| defined(IN_RC)) ) \
213	\|\| (defined(IN_RING0) && (defined(IN_RING3) \|\| defined(IN_RC)) ) \
214	\|\| (defined(IN_RC) && (defined(IN_RING3) \|\| defined(IN_RING0)) )
215	# error "Only one of the IN_RING3, IN_RING0, IN_RC defines should be defined."
216	#endif
217
218
219	/** @def ARCH_BITS
220	* Defines the bit count of the current context.
221	*/
222	#if !defined(ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
223	# if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_SPARC64)
224	# define ARCH_BITS 64
225	# else
226	# define ARCH_BITS 32
227	# endif
228	#endif
229
230	/** @def HC_ARCH_BITS
231	* Defines the host architecture bit count.
232	*/
233	#if !defined(HC_ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
234	# ifndef IN_RC
235	# define HC_ARCH_BITS ARCH_BITS
236	# else
237	# define HC_ARCH_BITS 32
238	# endif
239	#endif
240
241	/** @def GC_ARCH_BITS
242	* Defines the guest architecture bit count.
243	*/
244	#if !defined(GC_ARCH_BITS) && !defined(DOXYGEN_RUNNING)
245	# ifdef VBOX_WITH_64_BITS_GUESTS
246	# define GC_ARCH_BITS 64
247	# else
248	# define GC_ARCH_BITS 32
249	# endif
250	#endif
251
252	/** @def R3_ARCH_BITS
253	* Defines the host ring-3 architecture bit count.
254	*/
255	#if !defined(R3_ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
256	# ifdef IN_RING3
257	# define R3_ARCH_BITS ARCH_BITS
258	# else
259	# define R3_ARCH_BITS HC_ARCH_BITS
260	# endif
261	#endif
262
263	/** @def R0_ARCH_BITS
264	* Defines the host ring-0 architecture bit count.
265	*/
266	#if !defined(R0_ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
267	# ifdef IN_RING0
268	# define R0_ARCH_BITS ARCH_BITS
269	# else
270	# define R0_ARCH_BITS HC_ARCH_BITS
271	# endif
272	#endif
273
274	/** @def GC_ARCH_BITS
275	* Defines the guest architecture bit count.
276	*/
277	#if !defined(GC_ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
278	# ifdef IN_RC
279	# define GC_ARCH_BITS ARCH_BITS
280	# else
281	# define GC_ARCH_BITS 32
282	# endif
283	#endif
284
285
286	/** @def CTXTYPE
287	* Declare a type differently in GC, R3 and R0.
288	*
289	* @param GCType The GC type.
290	* @param R3Type The R3 type.
291	* @param R0Type The R0 type.
292	* @remark For pointers used only in one context use RCPTRTYPE(), R3R0PTRTYPE(), R3PTRTYPE() or R0PTRTYPE().
293	*/
294	#ifdef IN_RC
295	# define CTXTYPE(GCType, R3Type, R0Type) GCType
296	#elif defined(IN_RING3)
297	# define CTXTYPE(GCType, R3Type, R0Type) R3Type
298	#else
299	# define CTXTYPE(GCType, R3Type, R0Type) R0Type
300	#endif
301
302	/** @def RCPTRTYPE
303	* Declare a pointer which is used in the raw mode context but appears in structure(s) used by
304	* both HC and RC. The main purpose is to make sure structures have the same
305	* size when built for different architectures.
306	*
307	* @param RCType The RC type.
308	*/
309	#define RCPTRTYPE(RCType) CTXTYPE(RCType, RTRCPTR, RTRCPTR)
310
311	/** @def R3R0PTRTYPE
312	* Declare a pointer which is used in HC, is explicitly valid in ring 3 and 0,
313	* but appears in structure(s) used by both HC and GC. The main purpose is to
314	* make sure structures have the same size when built for different architectures.
315	*
316	* @param R3R0Type The R3R0 type.
317	* @remarks This used to be called HCPTRTYPE.
318	*/
319	#define R3R0PTRTYPE(R3R0Type) CTXTYPE(RTHCPTR, R3R0Type, R3R0Type)
320
321	/** @def R3PTRTYPE
322	* Declare a pointer which is used in R3 but appears in structure(s) used by
323	* both HC and GC. The main purpose is to make sure structures have the same
324	* size when built for different architectures.
325	*
326	* @param R3Type The R3 type.
327	*/
328	#define R3PTRTYPE(R3Type) CTXTYPE(RTHCUINTPTR, R3Type, RTHCUINTPTR)
329
330	/** @def R0PTRTYPE
331	* Declare a pointer which is used in R0 but appears in structure(s) used by
332	* both HC and GC. The main purpose is to make sure structures have the same
333	* size when built for different architectures.
334	*
335	* @param R0Type The R0 type.
336	*/
337	#define R0PTRTYPE(R0Type) CTXTYPE(RTHCUINTPTR, RTHCUINTPTR, R0Type)
338
339	/** @def CTXSUFF
340	* Adds the suffix of the current context to the passed in
341	* identifier name. The suffix is HC or GC.
342	*
343	* This is macro should only be used in shared code to avoid a forest of ifdefs.
344	* @param var Identifier name.
345	* @deprecated Use CTX_SUFF. Do NOT use this for new code.
346	*/
347	/** @def OTHERCTXSUFF
348	* Adds the suffix of the other context to the passed in
349	* identifier name. The suffix is HC or GC.
350	*
351	* This is macro should only be used in shared code to avoid a forest of ifdefs.
352	* @param var Identifier name.
353	* @deprecated Use CTX_SUFF. Do NOT use this for new code.
354	*/
355	#ifdef IN_RC
356	# define CTXSUFF(var) var##GC
357	# define OTHERCTXSUFF(var) var##HC
358	#else
359	# define CTXSUFF(var) var##HC
360	# define OTHERCTXSUFF(var) var##GC
361	#endif
362
363	/** @def CTXALLSUFF
364	* Adds the suffix of the current context to the passed in
365	* identifier name. The suffix is R3, R0 or GC.
366	*
367	* This is macro should only be used in shared code to avoid a forest of ifdefs.
368	* @param var Identifier name.
369	* @deprecated Use CTX_SUFF. Do NOT use this for new code.
370	*/
371	#ifdef IN_RC
372	# define CTXALLSUFF(var) var##GC
373	#elif defined(IN_RING0)
374	# define CTXALLSUFF(var) var##R0
375	#else
376	# define CTXALLSUFF(var) var##R3
377	#endif
378
379	/** @def CTX_SUFF
380	* Adds the suffix of the current context to the passed in
381	* identifier name. The suffix is R3, R0 or RC.
382	*
383	* This is macro should only be used in shared code to avoid a forest of ifdefs.
384	* @param var Identifier name.
385	*
386	* @remark This will replace CTXALLSUFF and CTXSUFF before long.
387	*/
388	#ifdef IN_RC
389	# define CTX_SUFF(var) var##RC
390	#elif defined(IN_RING0)
391	# define CTX_SUFF(var) var##R0
392	#else
393	# define CTX_SUFF(var) var##R3
394	#endif
395
396	/** @def CTX_SUFF_Z
397	* Adds the suffix of the current context to the passed in
398	* identifier name, combining RC and R0 into RZ.
399	* The suffix thus is R3 or RZ.
400	*
401	* This is macro should only be used in shared code to avoid a forest of ifdefs.
402	* @param var Identifier name.
403	*
404	* @remark This will replace CTXALLSUFF and CTXSUFF before long.
405	*/
406	#ifdef IN_RING3
407	# define CTX_SUFF_Z(var) var##R3
408	#else
409	# define CTX_SUFF_Z(var) var##RZ
410	#endif
411
412
413	/** @def CTXMID
414	* Adds the current context as a middle name of an identifier name
415	* The middle name is HC or GC.
416	*
417	* This is macro should only be used in shared code to avoid a forest of ifdefs.
418	* @param first First name.
419	* @param last Surname.
420	*/
421	/** @def OTHERCTXMID
422	* Adds the other context as a middle name of an identifier name
423	* The middle name is HC or GC.
424	*
425	* This is macro should only be used in shared code to avoid a forest of ifdefs.
426	* @param first First name.
427	* @param last Surname.
428	* @deprecated use CTX_MID or CTX_MID_Z
429	*/
430	#ifdef IN_RC
431	# define CTXMID(first, last) first##GC##last
432	# define OTHERCTXMID(first, last) first##HC##last
433	#else
434	# define CTXMID(first, last) first##HC##last
435	# define OTHERCTXMID(first, last) first##GC##last
436	#endif
437
438	/** @def CTXALLMID
439	* Adds the current context as a middle name of an identifier name.
440	* The middle name is R3, R0 or GC.
441	*
442	* This is macro should only be used in shared code to avoid a forest of ifdefs.
443	* @param first First name.
444	* @param last Surname.
445	* @deprecated use CTX_MID or CTX_MID_Z
446	*/
447	#ifdef IN_RC
448	# define CTXALLMID(first, last) first##GC##last
449	#elif defined(IN_RING0)
450	# define CTXALLMID(first, last) first##R0##last
451	#else
452	# define CTXALLMID(first, last) first##R3##last
453	#endif
454
455	/** @def CTX_MID
456	* Adds the current context as a middle name of an identifier name.
457	* The middle name is R3, R0 or RC.
458	*
459	* This is macro should only be used in shared code to avoid a forest of ifdefs.
460	* @param first First name.
461	* @param last Surname.
462	*/
463	#ifdef IN_RC
464	# define CTX_MID(first, last) first##RC##last
465	#elif defined(IN_RING0)
466	# define CTX_MID(first, last) first##R0##last
467	#else
468	# define CTX_MID(first, last) first##R3##last
469	#endif
470
471	/** @def CTX_MID_Z
472	* Adds the current context as a middle name of an identifier name, combining RC
473	* and R0 into RZ.
474	* The middle name thus is either R3 or RZ.
475	*
476	* This is macro should only be used in shared code to avoid a forest of ifdefs.
477	* @param first First name.
478	* @param last Surname.
479	*/
480	#ifdef IN_RING3
481	# define CTX_MID_Z(first, last) first##R3##last
482	#else
483	# define CTX_MID_Z(first, last) first##RZ##last
484	#endif
485
486
487	/** @def R3STRING
488	* A macro which in GC and R0 will return a dummy string while in R3 it will return
489	* the parameter.
490	*
491	* This is typically used to wrap description strings in structures shared
492	* between R3, R0 and/or GC. The intention is to avoid the \#ifdef IN_RING3 mess.
493	*
494	* @param pR3String The R3 string. Only referenced in R3.
495	* @see R0STRING and GCSTRING
496	*/
497	#ifdef IN_RING3
498	# define R3STRING(pR3String) (pR3String)
499	#else
500	# define R3STRING(pR3String) ("<R3_STRING>")
501	#endif
502
503	/** @def R0STRING
504	* A macro which in GC and R3 will return a dummy string while in R0 it will return
505	* the parameter.
506	*
507	* This is typically used to wrap description strings in structures shared
508	* between R3, R0 and/or GC. The intention is to avoid the \#ifdef IN_RING0 mess.
509	*
510	* @param pR0String The R0 string. Only referenced in R0.
511	* @see R3STRING and GCSTRING
512	*/
513	#ifdef IN_RING0
514	# define R0STRING(pR0String) (pR0String)
515	#else
516	# define R0STRING(pR0String) ("<R0_STRING>")
517	#endif
518
519	/** @def RCSTRING
520	* A macro which in R3 and R0 will return a dummy string while in RC it will return
521	* the parameter.
522	*
523	* This is typically used to wrap description strings in structures shared
524	* between R3, R0 and/or RC. The intention is to avoid the \#ifdef IN_RC mess.
525	*
526	* @param pRCString The RC string. Only referenced in RC.
527	* @see R3STRING, R0STRING
528	*/
529	#ifdef IN_RC
530	# define RCSTRING(pRCString) (pRCString)
531	#else
532	# define RCSTRING(pRCString) ("<RC_STRING>")
533	#endif
534
535
536	/** @def RT_NOTHING
537	* A macro that expands to nothing.
538	* This is primarily intended as a dummy argument for macros to avoid the
539	* undefined behavior passing empty arguments to an macro (ISO C90 and C++98,
540	* gcc v4.4 warns about it).
541	*/
542	#define RT_NOTHING
543
544	/** @def RT_GCC_EXTENSION
545	* Macro for shutting up GCC warnings about using language extensions. */
546	#ifdef __GNUC__
547	# define RT_GCC_EXTENSION __extension__
548	#else
549	# define RT_GCC_EXTENSION
550	#endif
551
552	/** @def RT_COMPILER_GROKS_64BIT_BITFIELDS
553	* Macro that is defined if the compiler understands 64-bit bitfields. */
554	#if !defined(RT_OS_OS2) \|\| (!defined(__IBMC__) && !defined(__IBMCPP__))
555	# define RT_COMPILER_GROKS_64BIT_BITFIELDS
556	#endif
557
558	/** @def RT_COMPILER_WITH_80BIT_LONG_DOUBLE
559	* Macro that is defined if the compiler implements long double as the
560	* IEEE extended precision floating. */
561	#if (defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)) && !defined(RT_OS_WINDOWS)
562	# define RT_COMPILER_WITH_80BIT_LONG_DOUBLE
563	#endif
564
565
566	/** @def RT_EXCEPTIONS_ENABLED
567	* Defined when C++ exceptions are enabled.
568	*/
569	#if !defined(RT_EXCEPTIONS_ENABLED) \
570	&& defined(__cplusplus) \
571	&& ( (defined(_MSC_VER) && defined(_CPPUNWIND)) \
572	\|\| (defined(__GNUC__) && defined(__EXCEPTIONS)))
573	# define RT_EXCEPTIONS_ENABLED
574	#endif
575
576	/** @def RT_NO_THROW
577	* How to express that a function doesn't throw C++ exceptions
578	* and the compiler can thus save itself the bother of trying
579	* to catch any of them. Put this between the closing parenthesis
580	* and the semicolon in function prototypes (and implementation if C++).
581	*/
582	#ifdef RT_EXCEPTIONS_ENABLED
583	# define RT_NO_THROW throw()
584	#else
585	# define RT_NO_THROW
586	#endif
587
588	/** @def RT_THROW
589	* How to express that a method or function throws a type of exceptions. Some
590	* compilers does not want this kind of information and will warning about it.
591	*
592	* @param type The type exception.
593	*
594	* @remarks If the actual throwing is done from the header, enclose it by
595	* \#ifdef RT_EXCEPTIONS_ENABLED ... \#else ... \#endif so the header
596	* compiles cleanly without exceptions enabled.
597	*
598	* Do NOT use this for the actual throwing of exceptions!
599	*/
600	#ifdef RT_EXCEPTIONS_ENABLED
601	# ifdef _MSC_VER
602	# if _MSC_VER >= 1310
603	# define RT_THROW(type)
604	# else
605	# define RT_THROW(type) throw(type)
606	# endif
607	# else
608	# define RT_THROW(type) throw(type)
609	# endif
610	#else
611	# define RT_THROW(type)
612	#endif
613
614	/** @def RT_GCC_SUPPORTS_VISIBILITY_HIDDEN
615	* Indicates that the "hidden" visibility attribute can be used (GCC) */
616	#if defined(__GNUC__)
617	# if __GNUC__ >= 4 && !defined(RT_OS_OS2) && !defined(RT_OS_WINDOWS)
618	# define RT_GCC_SUPPORTS_VISIBILITY_HIDDEN
619	# endif
620	#endif
621
622	/** @def RTCALL
623	* The standard calling convention for the Runtime interfaces.
624	*/
625	#ifdef _MSC_VER
626	# define RTCALL __cdecl
627	#elif defined(RT_OS_OS2)
628	# define RTCALL __cdecl
629	#elif defined(__GNUC__) && defined(IN_RING0) && defined(RT_ARCH_X86) /** @todo consider dropping IN_RING0 here. */
630	# define RTCALL __attribute__((cdecl,regparm(0))) /* regparm(0) deals with -mregparm=x use in the linux kernel. */
631	#else
632	# define RTCALL
633	#endif
634
635	/** @def DECLEXPORT
636	* How to declare an exported function.
637	* @param type The return type of the function declaration.
638	*/
639	#if defined(_MSC_VER) \|\| defined(RT_OS_OS2)
640	# define DECLEXPORT(type) __declspec(dllexport) type
641	#elif defined(RT_USE_VISIBILITY_DEFAULT)
642	# define DECLEXPORT(type) __attribute__((visibility("default"))) type
643	#else
644	# define DECLEXPORT(type) type
645	#endif
646
647	/** @def DECLIMPORT
648	* How to declare an imported function.
649	* @param type The return type of the function declaration.
650	*/
651	#if defined(_MSC_VER) \|\| (defined(RT_OS_OS2) && !defined(__IBMC__) && !defined(__IBMCPP__))
652	# define DECLIMPORT(type) __declspec(dllimport) type
653	#else
654	# define DECLIMPORT(type) type
655	#endif
656
657	/** @def DECLHIDDEN
658	* How to declare a non-exported function or variable.
659	* @param type The return type of the function or the data type of the variable.
660	*/
661	#if !defined(RT_GCC_SUPPORTS_VISIBILITY_HIDDEN) \|\| defined(RT_NO_VISIBILITY_HIDDEN)
662	# define DECLHIDDEN(type) type
663	#else
664	# define DECLHIDDEN(type) __attribute__((visibility("hidden"))) type
665	#endif
666
667	/** @def DECL_HIDDEN_CONST
668	* Workaround for g++ warnings when applying the hidden attribute to a const
669	* definition. Use DECLHIDDEN for the declaration.
670	* @param a_Type The return type of the function or the data type of
671	* the variable.
672	*/
673	#if defined(__cplusplus) && defined(__GNUC__)
674	# define DECL_HIDDEN_CONST(a_Type) a_Type
675	#else
676	# define DECL_HIDDEN_CONST(a_Type) DECLHIDDEN(a_Type)
677	#endif
678
679	/** @def DECL_INVALID
680	* How to declare a function not available for linking in the current context.
681	* The purpose is to create compile or like time errors when used. This isn't
682	* possible on all platforms.
683	* @param type The return type of the function.
684	*/
685	#if defined(_MSC_VER)
686	# define DECL_INVALID(type) __declspec(dllimport) type __stdcall
687	#elif defined(__GNUC__) && defined(__cplusplus)
688	# define DECL_INVALID(type) extern "C++" type
689	#else
690	# define DECL_INVALID(type) type
691	#endif
692
693	/** @def DECLASM
694	* How to declare an internal assembly function.
695	* @param type The return type of the function declaration.
696	*/
697	#ifdef __cplusplus
698	# if defined(_MSC_VER) \|\| defined(RT_OS_OS2)
699	# define DECLASM(type) extern "C" type __cdecl
700	# elif defined(__GNUC__) && defined(RT_ARCH_X86)
701	# define DECLASM(type) extern "C" type __attribute__((cdecl,regparm(0)))
702	# else
703	# define DECLASM(type) extern "C" type
704	# endif
705	#else
706	# if defined(_MSC_VER) \|\| defined(RT_OS_OS2)
707	# define DECLASM(type) type __cdecl
708	# elif defined(__GNUC__) && defined(RT_ARCH_X86)
709	# define DECLASM(type) type __attribute__((cdecl,regparm(0)))
710	# else
711	# define DECLASM(type) type
712	# endif
713	#endif
714
715	/** @def DECLASMTYPE
716	* How to declare an internal assembly function type.
717	* @param type The return type of the function.
718	*/
719	# if defined(_MSC_VER) \|\| defined(RT_OS_OS2)
720	# define DECLASMTYPE(type) type __cdecl
721	#else
722	# define DECLASMTYPE(type) type
723	#endif
724
725	/** @def DECLNORETURN
726	* How to declare a function which does not return.
727	* @note: This macro can be combined with other macros, for example
728	* @code
729	* EMR3DECL(DECLNORETURN(void)) foo(void);
730	* @endcode
731	*/
732	#ifdef _MSC_VER
733	# define DECLNORETURN(type) __declspec(noreturn) type
734	#elif defined(__GNUC__)
735	# define DECLNORETURN(type) __attribute__((noreturn)) type
736	#else
737	# define DECLNORETURN(type) type
738	#endif
739
740	/** @def DECLWEAK
741	* How to declare a variable which is not necessarily resolved at
742	* runtime.
743	* @note: This macro can be combined with other macros, for example
744	* @code
745	* EMR3DECL(DECLWEAK(int)) foo;
746	* @endcode
747	*/
748	#if defined(__GNUC__)
749	# define DECLWEAK(type) type __attribute__((weak))
750	#else
751	# define DECLWEAK(type) type
752	#endif
753
754	/** @def DECLCALLBACK
755	* How to declare an call back function type.
756	* @param type The return type of the function declaration.
757	*/
758	#define DECLCALLBACK(type) type RTCALL
759
760	/** @def DECLCALLBACKPTR
761	* How to declare an call back function pointer.
762	* @param type The return type of the function declaration.
763	* @param name The name of the variable member.
764	*/
765	#define DECLCALLBACKPTR(type, name) type (RTCALL * name)
766
767	/** @def DECLCALLBACKMEMBER
768	* How to declare an call back function pointer member.
769	* @param type The return type of the function declaration.
770	* @param name The name of the struct/union/class member.
771	*/
772	#define DECLCALLBACKMEMBER(type, name) type (RTCALL * name)
773
774	/** @def DECLR3CALLBACKMEMBER
775	* How to declare an call back function pointer member - R3 Ptr.
776	* @param type The return type of the function declaration.
777	* @param name The name of the struct/union/class member.
778	* @param args The argument list enclosed in parentheses.
779	*/
780	#ifdef IN_RING3
781	# define DECLR3CALLBACKMEMBER(type, name, args) type (RTCALL * name) args
782	#else
783	# define DECLR3CALLBACKMEMBER(type, name, args) RTR3PTR name
784	#endif
785
786	/** @def DECLRCCALLBACKMEMBER
787	* How to declare an call back function pointer member - RC Ptr.
788	* @param type The return type of the function declaration.
789	* @param name The name of the struct/union/class member.
790	* @param args The argument list enclosed in parentheses.
791	*/
792	#ifdef IN_RC
793	# define DECLRCCALLBACKMEMBER(type, name, args) type (RTCALL * name) args
794	#else
795	# define DECLRCCALLBACKMEMBER(type, name, args) RTRCPTR name
796	#endif
797
798	/** @def DECLR0CALLBACKMEMBER
799	* How to declare an call back function pointer member - R0 Ptr.
800	* @param type The return type of the function declaration.
801	* @param name The name of the struct/union/class member.
802	* @param args The argument list enclosed in parentheses.
803	*/
804	#ifdef IN_RING0
805	# define DECLR0CALLBACKMEMBER(type, name, args) type (RTCALL * name) args
806	#else
807	# define DECLR0CALLBACKMEMBER(type, name, args) RTR0PTR name
808	#endif
809
810	/** @def DECLINLINE
811	* How to declare a function as inline.
812	* @param type The return type of the function declaration.
813	* @remarks Don't use this macro on C++ methods.
814	*/
815	#ifdef __GNUC__
816	# define DECLINLINE(type) static __inline__ type
817	#elif defined(__cplusplus)
818	# define DECLINLINE(type) inline type
819	#elif defined(_MSC_VER)
820	# define DECLINLINE(type) _inline type
821	#elif defined(__IBMC__)
822	# define DECLINLINE(type) _Inline type
823	#else
824	# define DECLINLINE(type) inline type
825	#endif
826
827
828	/** @def DECL_FORCE_INLINE
829	* How to declare a function as inline and try convince the compiler to always
830	* inline it regardless of optimization switches.
831	* @param type The return type of the function declaration.
832	* @remarks Use sparsely and with care. Don't use this macro on C++ methods.
833	*/
834	#ifdef __GNUC__
835	# define DECL_FORCE_INLINE(type) __attribute__((__always_inline__)) DECLINLINE(type)
836	#elif defined(_MSC_VER)
837	# define DECL_FORCE_INLINE(type) __forceinline type
838	#else
839	# define DECL_FORCE_INLINE(type) DECLINLINE(type)
840	#endif
841
842
843	/** @def DECL_NO_INLINE
844	* How to declare a function telling the compiler not to inline it.
845	* @param scope The function scope, static or RT_NOTHING.
846	* @param type The return type of the function declaration.
847	* @remarks Don't use this macro on C++ methods.
848	*/
849	#ifdef __GNUC__
850	# define DECL_NO_INLINE(scope,type) __attribute__((noinline)) scope type
851	#elif defined(_MSC_VER)
852	# define DECL_NO_INLINE(scope,type) __declspec(noinline) scope type
853	#else
854	# define DECL_NO_INLINE(scope,type) scope type
855	#endif
856
857
858	/** @def IN_RT_STATIC
859	* Used to indicate whether we're linking against a static IPRT
860	* or not. The IPRT symbols will be declared as hidden (if
861	* supported). Note that this define has no effect without setting
862	* IN_RT_R0, IN_RT_R3 or IN_RT_RC indicators are set first.
863	*/
864
865	/** @def IN_RT_R0
866	* Used to indicate whether we're inside the same link module as
867	* the HC Ring-0 Runtime Library.
868	*/
869	/** @def RTR0DECL(type)
870	* Runtime Library HC Ring-0 export or import declaration.
871	* @param type The return type of the function declaration.
872	*/
873	#ifdef IN_RT_R0
874	# ifdef IN_RT_STATIC
875	# define RTR0DECL(type) DECLHIDDEN(type) RTCALL
876	# else
877	# define RTR0DECL(type) DECLEXPORT(type) RTCALL
878	# endif
879	#else
880	# define RTR0DECL(type) DECLIMPORT(type) RTCALL
881	#endif
882
883	/** @def IN_RT_R3
884	* Used to indicate whether we're inside the same link module as
885	* the HC Ring-3 Runtime Library.
886	*/
887	/** @def RTR3DECL(type)
888	* Runtime Library HC Ring-3 export or import declaration.
889	* @param type The return type of the function declaration.
890	*/
891	#ifdef IN_RT_R3
892	# ifdef IN_RT_STATIC
893	# define RTR3DECL(type) DECLHIDDEN(type) RTCALL
894	# else
895	# define RTR3DECL(type) DECLEXPORT(type) RTCALL
896	# endif
897	#else
898	# define RTR3DECL(type) DECLIMPORT(type) RTCALL
899	#endif
900
901	/** @def IN_RT_RC
902	* Used to indicate whether we're inside the same link module as the raw-mode
903	* context (RC) runtime library.
904	*/
905	/** @def RTRCDECL(type)
906	* Runtime Library raw-mode context export or import declaration.
907	* @param type The return type of the function declaration.
908	*/
909	#ifdef IN_RT_RC
910	# ifdef IN_RT_STATIC
911	# define RTRCDECL(type) DECLHIDDEN(type) RTCALL
912	# else
913	# define RTRCDECL(type) DECLEXPORT(type) RTCALL
914	# endif
915	#else
916	# define RTRCDECL(type) DECLIMPORT(type) RTCALL
917	#endif
918
919	/** @def RTDECL(type)
920	* Runtime Library export or import declaration.
921	* Functions declared using this macro exists in all contexts.
922	* @param type The return type of the function declaration.
923	*/
924	#if defined(IN_RT_R3) \|\| defined(IN_RT_RC) \|\| defined(IN_RT_R0)
925	# ifdef IN_RT_STATIC
926	# define RTDECL(type) DECLHIDDEN(type) RTCALL
927	# else
928	# define RTDECL(type) DECLEXPORT(type) RTCALL
929	# endif
930	#else
931	# define RTDECL(type) DECLIMPORT(type) RTCALL
932	#endif
933
934	/** @def RTDATADECL(type)
935	* Runtime Library export or import declaration.
936	* Data declared using this macro exists in all contexts.
937	* @param type The return type of the function declaration.
938	*/
939	#if defined(IN_RT_R3) \|\| defined(IN_RT_RC) \|\| defined(IN_RT_R0)
940	# ifdef IN_RT_STATIC
941	# define RTDATADECL(type) DECLHIDDEN(type)
942	# else
943	# define RTDATADECL(type) DECLEXPORT(type)
944	# endif
945	#else
946	# define RTDATADECL(type) DECLIMPORT(type)
947	#endif
948
949	/** @def RT_DECL_CLASS
950	* Declares an class living in the runtime.
951	*/
952	#if defined(IN_RT_R3) \|\| defined(IN_RT_RC) \|\| defined(IN_RT_R0)
953	# ifdef IN_RT_STATIC
954	# define RT_DECL_CLASS
955	# else
956	# define RT_DECL_CLASS DECLEXPORT_CLASS
957	# endif
958	#else
959	# define RT_DECL_CLASS DECLIMPORT_CLASS
960	#endif
961
962
963	/** @def RT_NOCRT
964	* Symbol name wrapper for the No-CRT bits.
965	*
966	* In order to coexist in the same process as other CRTs, we need to
967	* decorate the symbols such that they don't conflict the ones in the
968	* other CRTs. The result of such conflicts / duplicate symbols can
969	* confuse the dynamic loader on Unix like systems.
970	*
971	* Define RT_WITHOUT_NOCRT_WRAPPERS to drop the wrapping.
972	* Define RT_WITHOUT_NOCRT_WRAPPER_ALIASES to drop the aliases to the
973	* wrapped names.
974	*/
975	/** @def RT_NOCRT_STR
976	* Same as RT_NOCRT only it'll return a double quoted string of the result.
977	*/
978	#ifndef RT_WITHOUT_NOCRT_WRAPPERS
979	# define RT_NOCRT(name) nocrt_ ## name
980	# define RT_NOCRT_STR(name) "nocrt_" # name
981	#else
982	# define RT_NOCRT(name) name
983	# define RT_NOCRT_STR(name) #name
984	#endif
985
986
987
988	/** @def RT_LIKELY
989	* Give the compiler a hint that an expression is very likely to hold true.
990	*
991	* Some compilers support explicit branch prediction so that the CPU backend
992	* can hint the processor and also so that code blocks can be reordered such
993	* that the predicted path sees a more linear flow, thus improving cache
994	* behaviour, etc.
995	*
996	* IPRT provides the macros RT_LIKELY() and RT_UNLIKELY() as a way to utilize
997	* this compiler feature when present.
998	*
999	* A few notes about the usage:
1000	*
1001	* - Generally, use RT_UNLIKELY() with error condition checks (unless you
1002	* have some _strong_ reason to do otherwise, in which case document it),
1003	* and/or RT_LIKELY() with success condition checks, assuming you want
1004	* to optimize for the success path.
1005	*
1006	* - Other than that, if you don't know the likelihood of a test succeeding
1007	* from empirical or other 'hard' evidence, don't make predictions unless
1008	* you happen to be a Dirk Gently.
1009	*
1010	* - These macros are meant to be used in places that get executed a lot. It
1011	* is wasteful to make predictions in code that is executed rarely (e.g.
1012	* at subsystem initialization time) as the basic block reordering that this
1013	* affects can often generate larger code.
1014	*
1015	* - Note that RT_SUCCESS() and RT_FAILURE() already makes use of RT_LIKELY()
1016	* and RT_UNLIKELY(). Should you wish for prediction free status checks,
1017	* use the RT_SUCCESS_NP() and RT_FAILURE_NP() macros instead.
1018	*
1019	*
1020	* @returns the boolean result of the expression.
1021	* @param expr The expression that's very likely to be true.
1022	* @see RT_UNLIKELY
1023	*/
1024	/** @def RT_UNLIKELY
1025	* Give the compiler a hint that an expression is highly unlikely to hold true.
1026	*
1027	* See the usage instructions give in the RT_LIKELY() docs.
1028	*
1029	* @returns the boolean result of the expression.
1030	* @param expr The expression that's very unlikely to be true.
1031	* @see RT_LIKELY
1032	*/
1033	#if defined(__GNUC__)
1034	# if __GNUC__ >= 3 && !defined(FORTIFY_RUNNING)
1035	# define RT_LIKELY(expr) __builtin_expect(!!(expr), 1)
1036	# define RT_UNLIKELY(expr) __builtin_expect(!!(expr), 0)
1037	# else
1038	# define RT_LIKELY(expr) (expr)
1039	# define RT_UNLIKELY(expr) (expr)
1040	# endif
1041	#else
1042	# define RT_LIKELY(expr) (expr)
1043	# define RT_UNLIKELY(expr) (expr)
1044	#endif
1045
1046
1047	/** @def RT_STR
1048	* Returns the argument as a string constant.
1049	* @param str Argument to stringify. */
1050	#define RT_STR(str) #str
1051	/** @def RT_XSTR
1052	* Returns the expanded argument as a string.
1053	* @param str Argument to expand and stringy. */
1054	#define RT_XSTR(str) RT_STR(str)
1055
1056	/** @def RT_CONCAT
1057	* Concatenate the expanded arguments without any extra spaces in between.
1058	*
1059	* @param a The first part.
1060	* @param b The second part.
1061	*/
1062	#define RT_CONCAT(a,b) RT_CONCAT_HLP(a,b)
1063	/** RT_CONCAT helper, don't use. */
1064	#define RT_CONCAT_HLP(a,b) a##b
1065
1066	/** @def RT_CONCAT
1067	* Concatenate the expanded arguments without any extra spaces in between.
1068	*
1069	* @param a The 1st part.
1070	* @param b The 2nd part.
1071	* @param c The 3rd part.
1072	*/
1073	#define RT_CONCAT3(a,b,c) RT_CONCAT3_HLP(a,b,c)
1074	/** RT_CONCAT3 helper, don't use. */
1075	#define RT_CONCAT3_HLP(a,b,c) a##b##c
1076
1077	/** @def RT_CONCAT
1078	* Concatenate the expanded arguments without any extra spaces in between.
1079	*
1080	* @param a The 1st part.
1081	* @param b The 2nd part.
1082	* @param c The 3rd part.
1083	*/
1084	#define RT_CONCAT4(a,b,c,d) RT_CONCAT4_HLP(a,b,c,d)
1085	/** RT_CONCAT4 helper, don't use. */
1086	#define RT_CONCAT4_HLP(a,b,c,d) a##b##c##d
1087
1088	/**
1089	* String constant tuple - string constant, strlen(string constant).
1090	*
1091	* @param a_szConst String constant.
1092	*/
1093	#define RT_STR_TUPLE(a_szConst) a_szConst, (sizeof(a_szConst) - 1)
1094
1095
1096	/** @def RT_BIT
1097	* Convert a bit number into an integer bitmask (unsigned).
1098	* @param bit The bit number.
1099	*/
1100	#define RT_BIT(bit) ( 1U << (bit) )
1101
1102	/** @def RT_BIT_32
1103	* Convert a bit number into a 32-bit bitmask (unsigned).
1104	* @param bit The bit number.
1105	*/
1106	#define RT_BIT_32(bit) ( UINT32_C(1) << (bit) )
1107
1108	/** @def RT_BIT_64
1109	* Convert a bit number into a 64-bit bitmask (unsigned).
1110	* @param bit The bit number.
1111	*/
1112	#define RT_BIT_64(bit) ( UINT64_C(1) << (bit) )
1113
1114	/** @def RT_ALIGN
1115	* Align macro.
1116	* @param u Value to align.
1117	* @param uAlignment The alignment. Power of two!
1118	*
1119	* @remark Be extremely careful when using this macro with type which sizeof != sizeof int.
1120	* When possible use any of the other RT_ALIGN_* macros. And when that's not
1121	* possible, make 101% sure that uAlignment is specified with a right sized type.
1122	*
1123	* Specifying an unsigned 32-bit alignment constant with a 64-bit value will give
1124	* you a 32-bit return value!
1125	*
1126	* In short: Don't use this macro. Use RT_ALIGN_T() instead.
1127	*/
1128	#define RT_ALIGN(u, uAlignment) ( ((u) + ((uAlignment) - 1)) & ~((uAlignment) - 1) )
1129
1130	/** @def RT_ALIGN_T
1131	* Align macro.
1132	* @param u Value to align.
1133	* @param uAlignment The alignment. Power of two!
1134	* @param type Integer type to use while aligning.
1135	* @remark This macro is the preferred alignment macro, it doesn't have any of the pitfalls RT_ALIGN has.
1136	*/
1137	#define RT_ALIGN_T(u, uAlignment, type) ( ((type)(u) + ((uAlignment) - 1)) & ~(type)((uAlignment) - 1) )
1138
1139	/** @def RT_ALIGN_32
1140	* Align macro for a 32-bit value.
1141	* @param u32 Value to align.
1142	* @param uAlignment The alignment. Power of two!
1143	*/
1144	#define RT_ALIGN_32(u32, uAlignment) RT_ALIGN_T(u32, uAlignment, uint32_t)
1145
1146	/** @def RT_ALIGN_64
1147	* Align macro for a 64-bit value.
1148	* @param u64 Value to align.
1149	* @param uAlignment The alignment. Power of two!
1150	*/
1151	#define RT_ALIGN_64(u64, uAlignment) RT_ALIGN_T(u64, uAlignment, uint64_t)
1152
1153	/** @def RT_ALIGN_Z
1154	* Align macro for size_t.
1155	* @param cb Value to align.
1156	* @param uAlignment The alignment. Power of two!
1157	*/
1158	#define RT_ALIGN_Z(cb, uAlignment) RT_ALIGN_T(cb, uAlignment, size_t)
1159
1160	/** @def RT_ALIGN_P
1161	* Align macro for pointers.
1162	* @param pv Value to align.
1163	* @param uAlignment The alignment. Power of two!
1164	*/
1165	#define RT_ALIGN_P(pv, uAlignment) RT_ALIGN_PT(pv, uAlignment, void *)
1166
1167	/** @def RT_ALIGN_PT
1168	* Align macro for pointers with type cast.
1169	* @param u Value to align.
1170	* @param uAlignment The alignment. Power of two!
1171	* @param CastType The type to cast the result to.
1172	*/
1173	#define RT_ALIGN_PT(u, uAlignment, CastType) ( (CastType)RT_ALIGN_T(u, uAlignment, uintptr_t) )
1174
1175	/** @def RT_ALIGN_R3PT
1176	* Align macro for ring-3 pointers with type cast.
1177	* @param u Value to align.
1178	* @param uAlignment The alignment. Power of two!
1179	* @param CastType The type to cast the result to.
1180	*/
1181	#define RT_ALIGN_R3PT(u, uAlignment, CastType) ( (CastType)RT_ALIGN_T(u, uAlignment, RTR3UINTPTR) )
1182
1183	/** @def RT_ALIGN_R0PT
1184	* Align macro for ring-0 pointers with type cast.
1185	* @param u Value to align.
1186	* @param uAlignment The alignment. Power of two!
1187	* @param CastType The type to cast the result to.
1188	*/
1189	#define RT_ALIGN_R0PT(u, uAlignment, CastType) ( (CastType)RT_ALIGN_T(u, uAlignment, RTR0UINTPTR) )
1190
1191	/** @def RT_ALIGN_GCPT
1192	* Align macro for GC pointers with type cast.
1193	* @param u Value to align.
1194	* @param uAlignment The alignment. Power of two!
1195	* @param CastType The type to cast the result to.
1196	*/
1197	#define RT_ALIGN_GCPT(u, uAlignment, CastType) ( (CastType)RT_ALIGN_T(u, uAlignment, RTGCUINTPTR) )
1198
1199
1200	/** @def RT_OFFSETOF
1201	* Our own special offsetof() variant, returns a signed result.
1202	*
1203	* This differs from the usual offsetof() in that it's not relying on builtin
1204	* compiler stuff and thus can use variables in arrays the structure may
1205	* contain. This is useful to determine the sizes of structures ending
1206	* with a variable length field.
1207	*
1208	* @returns offset into the structure of the specified member. signed.
1209	* @param type Structure type.
1210	* @param member Member.
1211	*/
1212	#define RT_OFFSETOF(type, member) ( (int)(uintptr_t)&( ((type )(void )0)->member) )
1213
1214	/** @def RT_UOFFSETOF
1215	* Our own special offsetof() variant, returns an unsigned result.
1216	*
1217	* This differs from the usual offsetof() in that it's not relying on builtin
1218	* compiler stuff and thus can use variables in arrays the structure may
1219	* contain. This is useful to determine the sizes of structures ending
1220	* with a variable length field.
1221	*
1222	* @returns offset into the structure of the specified member. unsigned.
1223	* @param type Structure type.
1224	* @param member Member.
1225	*/
1226	#define RT_UOFFSETOF(type, member) ( (uintptr_t)&( ((type )(void )0)->member) )
1227
1228	/** @def RT_OFFSETOF_ADD
1229	* RT_OFFSETOF with an addend.
1230	*
1231	* @returns offset into the structure of the specified member. signed.
1232	* @param type Structure type.
1233	* @param member Member.
1234	* @param addend The addend to add to the offset.
1235	*/
1236	#define RT_OFFSETOF_ADD(type, member, addend) ( (int)RT_UOFFSETOF_ADD(type, member, addend) )
1237
1238	/** @def RT_UOFFSETOF_ADD
1239	* RT_UOFFSETOF with an addend.
1240	*
1241	* @returns offset into the structure of the specified member. signed.
1242	* @param type Structure type.
1243	* @param member Member.
1244	* @param addend The addend to add to the offset.
1245	*/
1246	#define RT_UOFFSETOF_ADD(type, member, addend) ( (uintptr_t)&( ((type )(void )(uintptr_t)(addend))->member) )
1247
1248	/** @def RT_SIZEOFMEMB
1249	* Get the size of a structure member.
1250	*
1251	* @returns size of the structure member.
1252	* @param type Structure type.
1253	* @param member Member.
1254	*/
1255	#define RT_SIZEOFMEMB(type, member) ( sizeof(((type )(void )0)->member) )
1256
1257	/** @def RT_FROM_MEMBER
1258	* Convert a pointer to a structure member into a pointer to the structure.
1259	*
1260	* @returns pointer to the structure.
1261	* @param pMem Pointer to the member.
1262	* @param Type Structure type.
1263	* @param Member Member name.
1264	*/
1265	#define RT_FROM_MEMBER(pMem, Type, Member) ( (Type ) ((uint8_t )(void *)(pMem) - RT_UOFFSETOF(Type, Member)) )
1266
1267	/** @def RT_FROM_CPP_MEMBER
1268	* Same as RT_FROM_MEMBER except it avoids the annoying g++ warnings about
1269	* invalid access to non-static data member of NULL object.
1270	*
1271	* @returns pointer to the structure.
1272	* @param pMem Pointer to the member.
1273	* @param Type Structure type.
1274	* @param Member Member name.
1275	*
1276	* @remarks Using the __builtin_offsetof does not shut up the compiler.
1277	*/
1278	#if defined(__GNUC__) && defined(__cplusplus)
1279	# define RT_FROM_CPP_MEMBER(pMem, Type, Member) \
1280	( (Type ) ((uintptr_t)(pMem) - (uintptr_t)&((Type )0x1000)->Member + 0x1000U) )
1281	#else
1282	# define RT_FROM_CPP_MEMBER(pMem, Type, Member) RT_FROM_MEMBER(pMem, Type, Member)
1283	#endif
1284
1285	/** @def RT_ELEMENTS
1286	* Calculates the number of elements in a statically sized array.
1287	* @returns Element count.
1288	* @param aArray Array in question.
1289	*/
1290	#define RT_ELEMENTS(aArray) ( sizeof(aArray) / sizeof((aArray)[0]) )
1291
1292	/**
1293	* Checks if the value is a power of two.
1294	*
1295	* @returns true if power of two, false if not.
1296	* @param uVal The value to test.
1297	* @remarks 0 is a power of two.
1298	* @see VERR_NOT_POWER_OF_TWO
1299	*/
1300	#define RT_IS_POWER_OF_TWO(uVal) ( ((uVal) & ((uVal) - 1)) == 0)
1301
1302	#ifdef RT_OS_OS2
1303	/* Undefine RT_MAX since there is an unfortunate clash with the max
1304	resource type define in os2.h. */
1305	# undef RT_MAX
1306	#endif
1307
1308	/** @def RT_MAX
1309	* Finds the maximum value.
1310	* @returns The higher of the two.
1311	* @param Value1 Value 1
1312	* @param Value2 Value 2
1313	*/
1314	#define RT_MAX(Value1, Value2) ( (Value1) >= (Value2) ? (Value1) : (Value2) )
1315
1316	/** @def RT_MIN
1317	* Finds the minimum value.
1318	* @returns The lower of the two.
1319	* @param Value1 Value 1
1320	* @param Value2 Value 2
1321	*/
1322	#define RT_MIN(Value1, Value2) ( (Value1) <= (Value2) ? (Value1) : (Value2) )
1323
1324	/** @def RT_CLAMP
1325	* Clamps the value to minimum and maximum values.
1326	* @returns The clamped value.
1327	* @param Value The value to check.
1328	* @param Min Minimum value.
1329	* @param Max Maximum value.
1330	*/
1331	#define RT_CLAMP(Value, Min, Max) ( (Value) > (Max) ? (Max) : (Value) < (Min) ? (Min) : (Value) )
1332
1333	/** @def RT_ABS
1334	* Get the absolute (non-negative) value.
1335	* @returns The absolute value of Value.
1336	* @param Value The value.
1337	*/
1338	#define RT_ABS(Value) ( (Value) >= 0 ? (Value) : -(Value) )
1339
1340	/** @def RT_BOOL
1341	* Turn non-zero/zero into true/false
1342	* @returns The resulting boolean value.
1343	* @param Value The value.
1344	*/
1345	#define RT_BOOL(Value) ( !!(Value) )
1346
1347	/** @def RT_LO_U8
1348	* Gets the low uint8_t of a uint16_t or something equivalent. */
1349	#ifdef __GNUC__
1350	# define RT_LO_U8(a) __extension__ ({ AssertCompile(sizeof((a)) == sizeof(uint16_t)); (uint8_t)(a); })
1351	#else
1352	# define RT_LO_U8(a) ( (uint8_t)(a) )
1353	#endif
1354	/** @def RT_HI_U16
1355	* Gets the high uint16_t of a uint32_t or something equivalent). */
1356	#ifdef __GNUC__
1357	# define RT_HI_U8(a) __extension__ ({ AssertCompile(sizeof((a)) == sizeof(uint16_t)); (uint8_t)((a) >> 8); })
1358	#else
1359	# define RT_HI_U8(a) ( (uint8_t)((a) >> 8) )
1360	#endif
1361
1362	/** @def RT_LO_U16
1363	* Gets the low uint16_t of a uint32_t or something equivalent. */
1364	#ifdef __GNUC__
1365	# define RT_LO_U16(a) __extension__ ({ AssertCompile(sizeof((a)) == sizeof(uint64_t)); (uint32_t)(a); })
1366	#else
1367	# define RT_LO_U16(a) ( (uint32_t)(a) )
1368	#endif
1369	/** @def RT_HI_U16
1370	* Gets the high uint16_t of a uint32_t or something equivalent). */
1371	#ifdef __GNUC__
1372	# define RT_HI_U16(a) __extension__ ({ AssertCompile(sizeof((a)) == sizeof(uint32_t)); (uint16_t)((a) >> 16); })
1373	#else
1374	# define RT_HI_U16(a) ( (uint16_t)((a) >> 16) )
1375	#endif
1376
1377	/** @def RT_LO_U32
1378	* Gets the low uint32_t of a uint64_t or something equivalent. */
1379	#ifdef __GNUC__
1380	# define RT_LO_U32(a) __extension__ ({ AssertCompile(sizeof((a)) == sizeof(uint64_t)); (uint32_t)(a); })
1381	#else
1382	# define RT_LO_U32(a) ( (uint32_t)(a) )
1383	#endif
1384	/** @def RT_HI_U32
1385	* Gets the high uint32_t of a uint64_t or something equivalent). */
1386	#ifdef __GNUC__
1387	# define RT_HI_U32(a) __extension__ ({ AssertCompile(sizeof((a)) == sizeof(uint64_t)); (uint32_t)((a) >> 32); })
1388	#else
1389	# define RT_HI_U32(a) ( (uint32_t)((a) >> 32) )
1390	#endif
1391
1392	/** @def RT_BYTE1
1393	* Gets the first byte of something. */
1394	#define RT_BYTE1(a) ( (a) & 0xff )
1395	/** @def RT_BYTE2
1396	* Gets the second byte of something. */
1397	#define RT_BYTE2(a) ( ((a) >> 8) & 0xff )
1398	/** @def RT_BYTE3
1399	* Gets the second byte of something. */
1400	#define RT_BYTE3(a) ( ((a) >> 16) & 0xff )
1401	/** @def RT_BYTE4
1402	* Gets the fourth byte of something. */
1403	#define RT_BYTE4(a) ( ((a) >> 24) & 0xff )
1404	/** @def RT_BYTE5
1405	* Gets the fifth byte of something. */
1406	#define RT_BYTE5(a) ( ((a) >> 32) & 0xff )
1407	/** @def RT_BYTE6
1408	* Gets the sixth byte of something. */
1409	#define RT_BYTE6(a) ( ((a) >> 40) & 0xff )
1410	/** @def RT_BYTE7
1411	* Gets the seventh byte of something. */
1412	#define RT_BYTE7(a) ( ((a) >> 48) & 0xff )
1413	/** @def RT_BYTE8
1414	* Gets the eight byte of something. */
1415	#define RT_BYTE8(a) ( ((a) >> 56) & 0xff )
1416
1417
1418	/** @def RT_LODWORD
1419	* Gets the low dword (=uint32_t) of something.
1420	* @deprecated Use RT_LO_U32. */
1421	#define RT_LODWORD(a) ( (uint32_t)(a) )
1422	/** @def RT_HIDWORD
1423	* Gets the high dword (=uint32_t) of a 64-bit of something.
1424	* @deprecated Use RT_HI_U32. */
1425	#define RT_HIDWORD(a) ( (uint32_t)((a) >> 32) )
1426
1427	/** @def RT_LOWORD
1428	* Gets the low word (=uint16_t) of something.
1429	* @deprecated Use RT_LO_U16. */
1430	#define RT_LOWORD(a) ( (a) & 0xffff )
1431	/** @def RT_HIWORD
1432	* Gets the high word (=uint16_t) of a 32-bit something.
1433	* @deprecated Use RT_HI_U16. */
1434	#define RT_HIWORD(a) ( (a) >> 16 )
1435
1436	/** @def RT_LOBYTE
1437	* Gets the low byte of something.
1438	* @deprecated Use RT_LO_U8. */
1439	#define RT_LOBYTE(a) ( (a) & 0xff )
1440	/** @def RT_HIBYTE
1441	* Gets the low byte of a 16-bit something.
1442	* @deprecated Use RT_HI_U8. */
1443	#define RT_HIBYTE(a) ( (a) >> 8 )
1444
1445
1446	/** @def RT_MAKE_U64
1447	* Constructs a uint64_t value from two uint32_t values.
1448	*/
1449	#define RT_MAKE_U64(Lo, Hi) ( (uint64_t)((uint32_t)(Hi)) << 32 \| (uint32_t)(Lo) )
1450
1451	/** @def RT_MAKE_U64_FROM_U16
1452	* Constructs a uint64_t value from four uint16_t values.
1453	*/
1454	#define RT_MAKE_U64_FROM_U16(w0, w1, w2, w3) \
1455	((uint64_t)( (uint64_t)((uint16_t)(w3)) << 48 \
1456	\| (uint64_t)((uint16_t)(w2)) << 32 \
1457	\| (uint32_t)((uint16_t)(w1)) << 16 \
1458	\| (uint16_t)(w0) ))
1459
1460	/** @def RT_MAKE_U64_FROM_U8
1461	* Constructs a uint64_t value from eight uint8_t values.
1462	*/
1463	#define RT_MAKE_U64_FROM_U8(b0, b1, b2, b3, b4, b5, b6, b7) \
1464	((uint64_t)( (uint64_t)((uint8_t)(b7)) << 56 \
1465	\| (uint64_t)((uint8_t)(b6)) << 48 \
1466	\| (uint64_t)((uint8_t)(b5)) << 40 \
1467	\| (uint64_t)((uint8_t)(b4)) << 32 \
1468	\| (uint32_t)((uint8_t)(b3)) << 24 \
1469	\| (uint32_t)((uint8_t)(b2)) << 16 \
1470	\| (uint16_t)((uint8_t)(b1)) << 8 \
1471	\| (uint8_t)(b0) ))
1472
1473	/** @def RT_MAKE_U32
1474	* Constructs a uint32_t value from two uint16_t values.
1475	*/
1476	#define RT_MAKE_U32(Lo, Hi) \
1477	((uint32_t)( (uint32_t)((uint16_t)(Hi)) << 16 \
1478	\| (uint16_t)(Lo) ))
1479
1480	/** @def RT_MAKE_U32_FROM_U8
1481	* Constructs a uint32_t value from four uint8_t values.
1482	*/
1483	#define RT_MAKE_U32_FROM_U8(b0, b1, b2, b3) \
1484	((uint32_t)( (uint32_t)((uint8_t)(b3)) << 24 \
1485	\| (uint32_t)((uint8_t)(b2)) << 16 \
1486	\| (uint16_t)((uint8_t)(b1)) << 8 \
1487	\| (uint8_t)(b0) ))
1488
1489	/** @def RT_MAKE_U16
1490	* Constructs a uint16_t value from two uint8_t values.
1491	*/
1492	#define RT_MAKE_U16(Lo, Hi) \
1493	((uint16_t)( (uint16_t)((uint8_t)(Hi)) << 8 \
1494	\| (uint8_t)(Lo) ))
1495
1496
1497	/** @def RT_BSWAP_U64
1498	* Reverses the byte order of an uint64_t value. */
1499	#if 0
1500	# define RT_BSWAP_U64(u64) RT_BSWAP_U64_C(u64)
1501	#elif defined(__GNUC__)
1502	# define RT_BSWAP_U64(u64) (__builtin_constant_p((u64)) \
1503	? RT_BSWAP_U64_C(u64) : ASMByteSwapU64(u64))
1504	#else
1505	# define RT_BSWAP_U64(u64) ASMByteSwapU64(u64)
1506	#endif
1507
1508	/** @def RT_BSWAP_U32
1509	* Reverses the byte order of an uint32_t value. */
1510	#if 0
1511	# define RT_BSWAP_U32(u32) RT_BSWAP_U32_C(u32)
1512	#elif defined(__GNUC__)
1513	# define RT_BSWAP_U32(u32) (__builtin_constant_p((u32)) \
1514	? RT_BSWAP_U32_C(u32) : ASMByteSwapU32(u32))
1515	#else
1516	# define RT_BSWAP_U32(u32) ASMByteSwapU32(u32)
1517	#endif
1518
1519	/** @def RT_BSWAP_U16
1520	* Reverses the byte order of an uint16_t value. */
1521	#if 0
1522	# define RT_BSWAP_U16(u16) RT_BSWAP_U16_C(u16)
1523	#elif defined(__GNUC__)
1524	# define RT_BSWAP_U16(u16) (__builtin_constant_p((u16)) \
1525	? RT_BSWAP_U16_C(u16) : ASMByteSwapU16(u16))
1526	#else
1527	# define RT_BSWAP_U16(u16) ASMByteSwapU16(u16)
1528	#endif
1529
1530
1531	/** @def RT_BSWAP_U64_C
1532	* Reverses the byte order of an uint64_t constant. */
1533	#define RT_BSWAP_U64_C(u64) RT_MAKE_U64(RT_BSWAP_U32_C((u64) >> 32), RT_BSWAP_U32_C((u64) & 0xffffffff))
1534
1535	/** @def RT_BSWAP_U32_C
1536	* Reverses the byte order of an uint32_t constant. */
1537	#define RT_BSWAP_U32_C(u32) RT_MAKE_U32_FROM_U8(RT_BYTE4(u32), RT_BYTE3(u32), RT_BYTE2(u32), RT_BYTE1(u32))
1538
1539	/** @def RT_BSWAP_U16_C
1540	* Reverses the byte order of an uint16_t constant. */
1541	#define RT_BSWAP_U16_C(u16) RT_MAKE_U16(RT_HIBYTE(u16), RT_LOBYTE(u16))
1542
1543
1544	/** @def RT_H2LE_U64
1545	* Converts an uint64_t value from host to little endian byte order. */
1546	#ifdef RT_BIG_ENDIAN
1547	# define RT_H2LE_U64(u64) RT_BSWAP_U64(u64)
1548	#else
1549	# define RT_H2LE_U64(u64) (u64)
1550	#endif
1551
1552	/** @def RT_H2LE_U64_C
1553	* Converts an uint64_t constant from host to little endian byte order. */
1554	#ifdef RT_BIG_ENDIAN
1555	# define RT_H2LE_U64_C(u64) RT_BSWAP_U64_C(u64)
1556	#else
1557	# define RT_H2LE_U64_C(u64) (u64)
1558	#endif
1559
1560	/** @def RT_H2LE_U32
1561	* Converts an uint32_t value from host to little endian byte order. */
1562	#ifdef RT_BIG_ENDIAN
1563	# define RT_H2LE_U32(u32) RT_BSWAP_U32(u32)
1564	#else
1565	# define RT_H2LE_U32(u32) (u32)
1566	#endif
1567
1568	/** @def RT_H2LE_U32_C
1569	* Converts an uint32_t constant from host to little endian byte order. */
1570	#ifdef RT_BIG_ENDIAN
1571	# define RT_H2LE_U32_C(u32) RT_BSWAP_U32_C(u32)
1572	#else
1573	# define RT_H2LE_U32_C(u32) (u32)
1574	#endif
1575
1576	/** @def RT_H2LE_U16
1577	* Converts an uint16_t value from host to little endian byte order. */
1578	#ifdef RT_BIG_ENDIAN
1579	# define RT_H2LE_U16(u16) RT_BSWAP_U16(u16)
1580	#else
1581	# define RT_H2LE_U16(u16) (u16)
1582	#endif
1583
1584	/** @def RT_H2LE_U16_C
1585	* Converts an uint16_t constant from host to little endian byte order. */
1586	#ifdef RT_BIG_ENDIAN
1587	# define RT_H2LE_U16_C(u16) RT_BSWAP_U16_C(u16)
1588	#else
1589	# define RT_H2LE_U16_C(u16) (u16)
1590	#endif
1591
1592
1593	/** @def RT_LE2H_U64
1594	* Converts an uint64_t value from little endian to host byte order. */
1595	#ifdef RT_BIG_ENDIAN
1596	# define RT_LE2H_U64(u64) RT_BSWAP_U64(u64)
1597	#else
1598	# define RT_LE2H_U64(u64) (u64)
1599	#endif
1600
1601	/** @def RT_LE2H_U64_C
1602	* Converts an uint64_t constant from little endian to host byte order. */
1603	#ifdef RT_BIG_ENDIAN
1604	# define RT_LE2H_U64_C(u64) RT_BSWAP_U64_C(u64)
1605	#else
1606	# define RT_LE2H_U64_C(u64) (u64)
1607	#endif
1608
1609	/** @def RT_LE2H_U32
1610	* Converts an uint32_t value from little endian to host byte order. */
1611	#ifdef RT_BIG_ENDIAN
1612	# define RT_LE2H_U32(u32) RT_BSWAP_U32(u32)
1613	#else
1614	# define RT_LE2H_U32(u32) (u32)
1615	#endif
1616
1617	/** @def RT_LE2H_U32_C
1618	* Converts an uint32_t constant from little endian to host byte order. */
1619	#ifdef RT_BIG_ENDIAN
1620	# define RT_LE2H_U32_C(u32) RT_BSWAP_U32_C(u32)
1621	#else
1622	# define RT_LE2H_U32_C(u32) (u32)
1623	#endif
1624
1625	/** @def RT_LE2H_U16
1626	* Converts an uint16_t value from little endian to host byte order. */
1627	#ifdef RT_BIG_ENDIAN
1628	# define RT_LE2H_U16(u16) RT_BSWAP_U16(u16)
1629	#else
1630	# define RT_LE2H_U16(u16) (u16)
1631	#endif
1632
1633	/** @def RT_LE2H_U16_C
1634	* Converts an uint16_t constant from little endian to host byte order. */
1635	#ifdef RT_BIG_ENDIAN
1636	# define RT_LE2H_U16_C(u16) RT_BSWAP_U16_C(u16)
1637	#else
1638	# define RT_LE2H_U16_C(u16) (u16)
1639	#endif
1640
1641
1642	/** @def RT_H2BE_U64
1643	* Converts an uint64_t value from host to big endian byte order. */
1644	#ifdef RT_BIG_ENDIAN
1645	# define RT_H2BE_U64(u64) (u64)
1646	#else
1647	# define RT_H2BE_U64(u64) RT_BSWAP_U64(u64)
1648	#endif
1649
1650	/** @def RT_H2BE_U64_C
1651	* Converts an uint64_t constant from host to big endian byte order. */
1652	#ifdef RT_BIG_ENDIAN
1653	# define RT_H2BE_U64_C(u64) (u64)
1654	#else
1655	# define RT_H2BE_U64_C(u64) RT_BSWAP_U64_C(u64)
1656	#endif
1657
1658	/** @def RT_H2BE_U32
1659	* Converts an uint32_t value from host to big endian byte order. */
1660	#ifdef RT_BIG_ENDIAN
1661	# define RT_H2BE_U32(u32) (u32)
1662	#else
1663	# define RT_H2BE_U32(u32) RT_BSWAP_U32(u32)
1664	#endif
1665
1666	/** @def RT_H2BE_U32_C
1667	* Converts an uint32_t constant from host to big endian byte order. */
1668	#ifdef RT_BIG_ENDIAN
1669	# define RT_H2BE_U32_C(u32) (u32)
1670	#else
1671	# define RT_H2BE_U32_C(u32) RT_BSWAP_U32_C(u32)
1672	#endif
1673
1674	/** @def RT_H2BE_U16
1675	* Converts an uint16_t value from host to big endian byte order. */
1676	#ifdef RT_BIG_ENDIAN
1677	# define RT_H2BE_U16(u16) (u16)
1678	#else
1679	# define RT_H2BE_U16(u16) RT_BSWAP_U16(u16)
1680	#endif
1681
1682	/** @def RT_H2BE_U16_C
1683	* Converts an uint16_t constant from host to big endian byte order. */
1684	#ifdef RT_BIG_ENDIAN
1685	# define RT_H2BE_U16_C(u16) (u16)
1686	#else
1687	# define RT_H2BE_U16_C(u16) RT_BSWAP_U16_C(u16)
1688	#endif
1689
1690	/** @def RT_BE2H_U64
1691	* Converts an uint64_t value from big endian to host byte order. */
1692	#ifdef RT_BIG_ENDIAN
1693	# define RT_BE2H_U64(u64) (u64)
1694	#else
1695	# define RT_BE2H_U64(u64) RT_BSWAP_U64(u64)
1696	#endif
1697
1698	/** @def RT_BE2H_U64
1699	* Converts an uint64_t constant from big endian to host byte order. */
1700	#ifdef RT_BIG_ENDIAN
1701	# define RT_BE2H_U64_C(u64) (u64)
1702	#else
1703	# define RT_BE2H_U64_C(u64) RT_BSWAP_U64_C(u64)
1704	#endif
1705
1706	/** @def RT_BE2H_U32
1707	* Converts an uint32_t value from big endian to host byte order. */
1708	#ifdef RT_BIG_ENDIAN
1709	# define RT_BE2H_U32(u32) (u32)
1710	#else
1711	# define RT_BE2H_U32(u32) RT_BSWAP_U32(u32)
1712	#endif
1713
1714	/** @def RT_BE2H_U32_C
1715	* Converts an uint32_t value from big endian to host byte order. */
1716	#ifdef RT_BIG_ENDIAN
1717	# define RT_BE2H_U32_C(u32) (u32)
1718	#else
1719	# define RT_BE2H_U32_C(u32) RT_BSWAP_U32_C(u32)
1720	#endif
1721
1722	/** @def RT_BE2H_U16
1723	* Converts an uint16_t value from big endian to host byte order. */
1724	#ifdef RT_BIG_ENDIAN
1725	# define RT_BE2H_U16(u16) (u16)
1726	#else
1727	# define RT_BE2H_U16(u16) RT_BSWAP_U16(u16)
1728	#endif
1729
1730	/** @def RT_BE2H_U16_C
1731	* Converts an uint16_t constant from big endian to host byte order. */
1732	#ifdef RT_BIG_ENDIAN
1733	# define RT_BE2H_U16_C(u16) (u16)
1734	#else
1735	# define RT_BE2H_U16_C(u16) RT_BSWAP_U16_C(u16)
1736	#endif
1737
1738
1739	/** @def RT_H2N_U64
1740	* Converts an uint64_t value from host to network byte order. */
1741	#define RT_H2N_U64(u64) RT_H2BE_U64(u64)
1742
1743	/** @def RT_H2N_U64_C
1744	* Converts an uint64_t constant from host to network byte order. */
1745	#define RT_H2N_U64_C(u64) RT_H2BE_U64_C(u64)
1746
1747	/** @def RT_H2N_U32
1748	* Converts an uint32_t value from host to network byte order. */
1749	#define RT_H2N_U32(u32) RT_H2BE_U32(u32)
1750
1751	/** @def RT_H2N_U32_C
1752	* Converts an uint32_t constant from host to network byte order. */
1753	#define RT_H2N_U32_C(u32) RT_H2BE_U32_C(u32)
1754
1755	/** @def RT_H2N_U16
1756	* Converts an uint16_t value from host to network byte order. */
1757	#define RT_H2N_U16(u16) RT_H2BE_U16(u16)
1758
1759	/** @def RT_H2N_U16_C
1760	* Converts an uint16_t constant from host to network byte order. */
1761	#define RT_H2N_U16_C(u16) RT_H2BE_U16_C(u16)
1762
1763	/** @def RT_N2H_U64
1764	* Converts an uint64_t value from network to host byte order. */
1765	#define RT_N2H_U64(u64) RT_BE2H_U64(u64)
1766
1767	/** @def RT_N2H_U64_C
1768	* Converts an uint64_t constant from network to host byte order. */
1769	#define RT_N2H_U64_C(u64) RT_BE2H_U64_C(u64)
1770
1771	/** @def RT_N2H_U32
1772	* Converts an uint32_t value from network to host byte order. */
1773	#define RT_N2H_U32(u32) RT_BE2H_U32(u32)
1774
1775	/** @def RT_N2H_U32_C
1776	* Converts an uint32_t constant from network to host byte order. */
1777	#define RT_N2H_U32_C(u32) RT_BE2H_U32_C(u32)
1778
1779	/** @def RT_N2H_U16
1780	* Converts an uint16_t value from network to host byte order. */
1781	#define RT_N2H_U16(u16) RT_BE2H_U16(u16)
1782
1783	/** @def RT_N2H_U16_C
1784	* Converts an uint16_t value from network to host byte order. */
1785	#define RT_N2H_U16_C(u16) RT_BE2H_U16_C(u16)
1786
1787
1788	/*
1789	* The BSD sys/param.h + machine/param.h file is a major source of
1790	* namespace pollution. Kill off some of the worse ones unless we're
1791	* compiling kernel code.
1792	*/
1793	#if defined(RT_OS_DARWIN) \
1794	&& !defined(KERNEL) \
1795	&& !defined(RT_NO_BSD_PARAM_H_UNDEFING) \
1796	&& ( defined(_SYS_PARAM_H_) \|\| defined(_I386_PARAM_H_) )
1797	/* sys/param.h: */
1798	# undef PSWP
1799	# undef PVM
1800	# undef PINOD
1801	# undef PRIBO
1802	# undef PVFS
1803	# undef PZERO
1804	# undef PSOCK
1805	# undef PWAIT
1806	# undef PLOCK
1807	# undef PPAUSE
1808	# undef PUSER
1809	# undef PRIMASK
1810	# undef MINBUCKET
1811	# undef MAXALLOCSAVE
1812	# undef FSHIFT
1813	# undef FSCALE
1814
1815	/* i386/machine.h: */
1816	# undef ALIGN
1817	# undef ALIGNBYTES
1818	# undef DELAY
1819	# undef STATUS_WORD
1820	# undef USERMODE
1821	# undef BASEPRI
1822	# undef MSIZE
1823	# undef CLSIZE
1824	# undef CLSIZELOG2
1825	#endif
1826
1827	/** @def NIL_OFFSET
1828	* NIL offset.
1829	* Whenever we use offsets instead of pointers to save space and relocation effort
1830	* NIL_OFFSET shall be used as the equivalent to NULL.
1831	*/
1832	#define NIL_OFFSET (~0U)
1833
1834	/** @def NOREF
1835	* Keeps the compiler from bitching about an unused parameter.
1836	*/
1837	#define NOREF(var) (void)(var)
1838
1839	/** @def RT_BREAKPOINT
1840	* Emit a debug breakpoint instruction.
1841	*
1842	* @remarks In the x86/amd64 gnu world we add a nop instruction after the int3
1843	* to force gdb to remain at the int3 source line.
1844	* @remarks The L4 kernel will try make sense of the breakpoint, thus the jmp on
1845	* x86/amd64.
1846	*/
1847	#ifdef __GNUC__
1848	# if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
1849	# if !defined(__L4ENV__)
1850	# define RT_BREAKPOINT() __asm__ __volatile__("int $3\n\tnop\n\t")
1851	# else
1852	# define RT_BREAKPOINT() __asm__ __volatile__("int3; jmp 1f; 1:\n\t")
1853	# endif
1854	# elif defined(RT_ARCH_SPARC64)
1855	# define RT_BREAKPOINT() __asm__ __volatile__("illtrap 0\n\t") /** @todo Sparc64: this is just a wild guess. */
1856	# elif defined(RT_ARCH_SPARC)
1857	# define RT_BREAKPOINT() __asm__ __volatile__("unimp 0\n\t") /** @todo Sparc: this is just a wild guess (same as Sparc64, just different name). */
1858	# endif
1859	#endif
1860	#ifdef _MSC_VER
1861	# define RT_BREAKPOINT() __debugbreak()
1862	#endif
1863	#if defined(__IBMC__) \|\| defined(__IBMCPP__)
1864	# define RT_BREAKPOINT() __interrupt(3)
1865	#endif
1866	#ifndef RT_BREAKPOINT
1867	# error "This compiler/arch is not supported!"
1868	#endif
1869
1870
1871	/** @defgroup grp_rt_cdefs_size Size Constants
1872	* (Of course, these are binary computer terms, not SI.)
1873	* @{
1874	*/
1875	/** 1 K (Kilo) (1 024). */
1876	#define _1K 0x00000400
1877	/** 2 K (Kilo) (2 048). */
1878	#define _2K 0x00000800
1879	/** 4 K (Kilo) (4 096). */
1880	#define _4K 0x00001000
1881	/** 8 K (Kilo) (8 192). */
1882	#define _8K 0x00002000
1883	/** 16 K (Kilo) (16 384). */
1884	#define _16K 0x00004000
1885	/** 32 K (Kilo) (32 678). */
1886	#define _32K 0x00008000
1887	/** 64 K (Kilo) (65 536). */
1888	#define _64K 0x00010000
1889	/** 128 K (Kilo) (131 072). */
1890	#define _128K 0x00020000
1891	/** 256 K (Kilo) (262 144). */
1892	#define _256K 0x00040000
1893	/** 512 K (Kilo) (524 288). */
1894	#define _512K 0x00080000
1895	/** 1 M (Mega) (1 048 576). */
1896	#define _1M 0x00100000
1897	/** 2 M (Mega) (2 097 152). */
1898	#define _2M 0x00200000
1899	/** 4 M (Mega) (4 194 304). */
1900	#define _4M 0x00400000
1901	/** 1 G (Giga) (1 073 741 824). (32-bit) */
1902	#define _1G 0x40000000
1903	/** 1 G (Giga) (1 073 741 824). (64-bit) */
1904	#define _1G64 0x40000000LL
1905	/** 2 G (Giga) (2 147 483 648). (32-bit) */
1906	#define _2G32 0x80000000U
1907	/** 2 G (Giga) (2 147 483 648). (64-bit) */
1908	#define _2G 0x0000000080000000LL
1909	/** 4 G (Giga) (4 294 967 296). */
1910	#define _4G 0x0000000100000000LL
1911	/** 1 T (Tera) (1 099 511 627 776). */
1912	#define _1T 0x0000010000000000LL
1913	/** 1 P (Peta) (1 125 899 906 842 624). */
1914	#define _1P 0x0004000000000000LL
1915	/** 1 E (Exa) (1 152 921 504 606 846 976). */
1916	#define _1E 0x1000000000000000LL
1917	/** 2 E (Exa) (2 305 843 009 213 693 952). */
1918	#define _2E 0x2000000000000000ULL
1919	/** @} */
1920
1921	/** @defgroup grp_rt_cdefs_decimal_grouping Decimal Constant Grouping Macros
1922	* @{ */
1923	#define RT_D1(g1) g1
1924	#define RT_D2(g1, g2) g1#g2
1925	#define RT_D3(g1, g2, g3) g1#g2#g3
1926	#define RT_D4(g1, g2, g3, g4) g1#g2#g3#g4
1927	#define RT_D5(g1, g2, g3, g4, g5) g1#g2#g3#g4#g5
1928	#define RT_D6(g1, g2, g3, g4, g5, g6) g1#g2#g3#g4#g5#g6
1929	#define RT_D7(g1, g2, g3, g4, g5, g6, g7) g1#g2#g3#g4#g5#g6#g7
1930
1931	#define RT_D1_U(g1) UINT32_C(g1)
1932	#define RT_D2_U(g1, g2) UINT32_C(g1#g2)
1933	#define RT_D3_U(g1, g2, g3) UINT32_C(g1#g2#g3)
1934	#define RT_D4_U(g1, g2, g3, g4) UINT64_C(g1#g2#g3#g4)
1935	#define RT_D5_U(g1, g2, g3, g4, g5) UINT64_C(g1#g2#g3#g4#g5)
1936	#define RT_D6_U(g1, g2, g3, g4, g5, g6) UINT64_C(g1#g2#g3#g4#g5#g6)
1937	#define RT_D7_U(g1, g2, g3, g4, g5, g6, g7) UINT64_C(g1#g2#g3#g4#g5#g6#g7)
1938
1939	#define RT_D1_S(g1) INT32_C(g1)
1940	#define RT_D2_S(g1, g2) INT32_C(g1#g2)
1941	#define RT_D3_S(g1, g2, g3) INT32_C(g1#g2#g3)
1942	#define RT_D4_S(g1, g2, g3, g4) INT64_C(g1#g2#g3#g4)
1943	#define RT_D5_S(g1, g2, g3, g4, g5) INT64_C(g1#g2#g3#g4#g5)
1944	#define RT_D6_S(g1, g2, g3, g4, g5, g6) INT64_C(g1#g2#g3#g4#g5#g6)
1945	#define RT_D7_S(g1, g2, g3, g4, g5, g6, g7) INT64_C(g1#g2#g3#g4#g5#g6#g7)
1946
1947	#define RT_D1_U32(g1) UINT32_C(g1)
1948	#define RT_D2_U32(g1, g2) UINT32_C(g1#g2)
1949	#define RT_D3_U32(g1, g2, g3) UINT32_C(g1#g2#g3)
1950	#define RT_D4_U32(g1, g2, g3, g4) UINT32_C(g1#g2#g3#g4)
1951
1952	#define RT_D1_S32(g1) INT32_C(g1)
1953	#define RT_D2_S32(g1, g2) INT32_C(g1#g2)
1954	#define RT_D3_S32(g1, g2, g3) INT32_C(g1#g2#g3)
1955	#define RT_D4_S32(g1, g2, g3, g4) INT32_C(g1#g2#g3#g4)
1956
1957	#define RT_D1_U64(g1) UINT64_C(g1)
1958	#define RT_D2_U64(g1, g2) UINT64_C(g1#g2)
1959	#define RT_D3_U64(g1, g2, g3) UINT64_C(g1#g2#g3)
1960	#define RT_D4_U64(g1, g2, g3, g4) UINT64_C(g1#g2#g3#g4)
1961	#define RT_D5_U64(g1, g2, g3, g4, g5) UINT64_C(g1#g2#g3#g4#g5)
1962	#define RT_D6_U64(g1, g2, g3, g4, g5, g6) UINT64_C(g1#g2#g3#g4#g5#g6)
1963	#define RT_D7_U64(g1, g2, g3, g4, g5, g6, g7) UINT64_C(g1#g2#g3#g4#g5#g6#g7)
1964
1965	#define RT_D1_S64(g1) INT64_C(g1)
1966	#define RT_D2_S64(g1, g2) INT64_C(g1#g2)
1967	#define RT_D3_S64(g1, g2, g3) INT64_C(g1#g2#g3)
1968	#define RT_D4_S64(g1, g2, g3, g4) INT64_C(g1#g2#g3#g4)
1969	#define RT_D5_S64(g1, g2, g3, g4, g5) INT64_C(g1#g2#g3#g4#g5)
1970	#define RT_D6_S64(g1, g2, g3, g4, g5, g6) INT64_C(g1#g2#g3#g4#g5#g6)
1971	#define RT_D7_S64(g1, g2, g3, g4, g5, g6, g7) INT64_C(g1#g2#g3#g4#g5#g6#g7)
1972	/** @} */
1973
1974
1975	/** @defgroup grp_rt_cdefs_time Time Constants
1976	* @{
1977	*/
1978	/** 1 hour expressed in nanoseconds (64-bit). */
1979	#define RT_NS_1HOUR UINT64_C(3600000000000)
1980	/** 1 minute expressed in nanoseconds (64-bit). */
1981	#define RT_NS_1MIN UINT64_C(60000000000)
1982	/** 45 second expressed in nanoseconds. */
1983	#define RT_NS_45SEC UINT64_C(45000000000)
1984	/** 30 second expressed in nanoseconds. */
1985	#define RT_NS_30SEC UINT64_C(30000000000)
1986	/** 20 second expressed in nanoseconds. */
1987	#define RT_NS_20SEC UINT64_C(20000000000)
1988	/** 15 second expressed in nanoseconds. */
1989	#define RT_NS_15SEC UINT64_C(15000000000)
1990	/** 10 second expressed in nanoseconds. */
1991	#define RT_NS_10SEC UINT64_C(10000000000)
1992	/** 1 second expressed in nanoseconds. */
1993	#define RT_NS_1SEC UINT32_C(1000000000)
1994	/** 100 millsecond expressed in nanoseconds. */
1995	#define RT_NS_100MS UINT32_C(100000000)
1996	/** 10 millsecond expressed in nanoseconds. */
1997	#define RT_NS_10MS UINT32_C(10000000)
1998	/** 1 millsecond expressed in nanoseconds. */
1999	#define RT_NS_1MS UINT32_C(1000000)
2000	/** 100 microseconds expressed in nanoseconds. */
2001	#define RT_NS_100US UINT32_C(100000)
2002	/** 10 microseconds expressed in nanoseconds. */
2003	#define RT_NS_10US UINT32_C(10000)
2004	/** 1 microsecond expressed in nanoseconds. */
2005	#define RT_NS_1US UINT32_C(1000)
2006
2007	/** 1 second expressed in nanoseconds - 64-bit type. */
2008	#define RT_NS_1SEC_64 UINT64_C(1000000000)
2009	/** 100 millsecond expressed in nanoseconds - 64-bit type. */
2010	#define RT_NS_100MS_64 UINT64_C(100000000)
2011	/** 10 millsecond expressed in nanoseconds - 64-bit type. */
2012	#define RT_NS_10MS_64 UINT64_C(10000000)
2013	/** 1 millsecond expressed in nanoseconds - 64-bit type. */
2014	#define RT_NS_1MS_64 UINT64_C(1000000)
2015	/** 100 microseconds expressed in nanoseconds - 64-bit type. */
2016	#define RT_NS_100US_64 UINT64_C(100000)
2017	/** 10 microseconds expressed in nanoseconds - 64-bit type. */
2018	#define RT_NS_10US_64 UINT64_C(10000)
2019	/** 1 microsecond expressed in nanoseconds - 64-bit type. */
2020	#define RT_NS_1US_64 UINT64_C(1000)
2021
2022	/** 1 hour expressed in microseconds. */
2023	#define RT_US_1HOUR UINT32_C(3600000000)
2024	/** 1 minute expressed in microseconds. */
2025	#define RT_US_1MIN UINT32_C(60000000)
2026	/** 1 second expressed in microseconds. */
2027	#define RT_US_1SEC UINT32_C(1000000)
2028	/** 100 millsecond expressed in microseconds. */
2029	#define RT_US_100MS UINT32_C(100000)
2030	/** 10 millsecond expressed in microseconds. */
2031	#define RT_US_10MS UINT32_C(10000)
2032	/** 1 millsecond expressed in microseconds. */
2033	#define RT_US_1MS UINT32_C(1000)
2034
2035	/** 1 hour expressed in microseconds - 64-bit type. */
2036	#define RT_US_1HOUR_64 UINT64_C(3600000000)
2037	/** 1 minute expressed in microseconds - 64-bit type. */
2038	#define RT_US_1MIN_64 UINT64_C(60000000)
2039	/** 1 second expressed in microseconds - 64-bit type. */
2040	#define RT_US_1SEC_64 UINT64_C(1000000)
2041	/** 100 millsecond expressed in microseconds - 64-bit type. */
2042	#define RT_US_100MS_64 UINT64_C(100000)
2043	/** 10 millsecond expressed in microseconds - 64-bit type. */
2044	#define RT_US_10MS_64 UINT64_C(10000)
2045	/** 1 millsecond expressed in microseconds - 64-bit type. */
2046	#define RT_US_1MS_64 UINT64_C(1000)
2047
2048	/** 1 hour expressed in milliseconds. */
2049	#define RT_MS_1HOUR UINT32_C(3600000)
2050	/** 1 minute expressed in milliseconds. */
2051	#define RT_MS_1MIN UINT32_C(60000)
2052	/** 1 second expressed in milliseconds. */
2053	#define RT_MS_1SEC UINT32_C(1000)
2054
2055	/** 1 hour expressed in milliseconds - 64-bit type. */
2056	#define RT_MS_1HOUR_64 UINT64_C(3600000)
2057	/** 1 minute expressed in milliseconds - 64-bit type. */
2058	#define RT_MS_1MIN_64 UINT64_C(60000)
2059	/** 1 second expressed in milliseconds - 64-bit type. */
2060	#define RT_MS_1SEC_64 UINT64_C(1000)
2061
2062	/** The number of seconds per week. */
2063	#define RT_SEC_1WEEK UINT32_C(604800)
2064	/** The number of seconds per day. */
2065	#define RT_SEC_1DAY UINT32_C(86400)
2066	/** The number of seconds per hour. */
2067	#define RT_SEC_1HOUR UINT32_C(3600)
2068
2069	/** The number of seconds per week - 64-bit type. */
2070	#define RT_SEC_1WEEK_64 UINT64_C(604800)
2071	/** The number of seconds per day - 64-bit type. */
2072	#define RT_SEC_1DAY_64 UINT64_C(86400)
2073	/** The number of seconds per hour - 64-bit type. */
2074	#define RT_SEC_1HOUR_64 UINT64_C(3600)
2075	/** @} */
2076
2077
2078	/** @defgroup grp_rt_cdefs_dbgtype Debug Info Types
2079	* @{ */
2080	/** Other format. */
2081	#define RT_DBGTYPE_OTHER RT_BIT_32(0)
2082	/** Stabs. */
2083	#define RT_DBGTYPE_STABS RT_BIT_32(1)
2084	/** Debug With Arbitrary Record Format (DWARF). */
2085	#define RT_DBGTYPE_DWARF RT_BIT_32(2)
2086	/** Microsoft Codeview debug info. */
2087	#define RT_DBGTYPE_CODEVIEW RT_BIT_32(3)
2088	/** Watcom debug info. */
2089	#define RT_DBGTYPE_WATCOM RT_BIT_32(4)
2090	/** IBM High Level Language debug info. */
2091	#define RT_DBGTYPE_HLL RT_BIT_32(5)
2092	/** Old OS/2 and Windows symbol file. */
2093	#define RT_DBGTYPE_SYM RT_BIT_32(6)
2094	/** Map file. */
2095	#define RT_DBGTYPE_MAP RT_BIT_32(7)
2096	/** @} */
2097
2098
2099	/** @defgroup grp_rt_cdefs_exetype Executable Image Types
2100	* @{ */
2101	/** Some other format. */
2102	#define RT_EXETYPE_OTHER RT_BIT_32(0)
2103	/** Portable Executable. */
2104	#define RT_EXETYPE_PE RT_BIT_32(1)
2105	/** Linear eXecutable. */
2106	#define RT_EXETYPE_LX RT_BIT_32(2)
2107	/** Linear Executable. */
2108	#define RT_EXETYPE_LE RT_BIT_32(3)
2109	/** New Executable. */
2110	#define RT_EXETYPE_NE RT_BIT_32(4)
2111	/** DOS Executable (Mark Zbikowski). */
2112	#define RT_EXETYPE_MZ RT_BIT_32(5)
2113	/** COM Executable. */
2114	#define RT_EXETYPE_COM RT_BIT_32(6)
2115	/** a.out Executable. */
2116	#define RT_EXETYPE_AOUT RT_BIT_32(7)
2117	/** Executable and Linkable Format. */
2118	#define RT_EXETYPE_ELF RT_BIT_32(8)
2119	/** Mach-O Executable (including FAT ones). */
2120	#define RT_EXETYPE_MACHO RT_BIT_32(9)
2121	/** TE from UEFI. */
2122	#define RT_EXETYPE_TE RT_BIT_32(9)
2123	/** @} */
2124
2125
2126	/** @def VALID_PTR
2127	* Pointer validation macro.
2128	* @param ptr The pointer.
2129	*/
2130	#if defined(RT_ARCH_AMD64)
2131	# ifdef IN_RING3
2132	# if defined(RT_OS_DARWIN) /* first 4GB is reserved for legacy kernel. */
2133	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) >= _4G \
2134	&& !((uintptr_t)(ptr) & 0xffff800000000000ULL) )
2135	# elif defined(RT_OS_SOLARIS) /* The kernel only used the top 2TB, but keep it simple. */
2136	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U \
2137	&& ( ((uintptr_t)(ptr) & 0xffff800000000000ULL) == 0xffff800000000000ULL \
2138	\|\| ((uintptr_t)(ptr) & 0xffff800000000000ULL) == 0) )
2139	# else
2140	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U \
2141	&& !((uintptr_t)(ptr) & 0xffff800000000000ULL) )
2142	# endif
2143	# else /* !IN_RING3 */
2144	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U \
2145	&& ( ((uintptr_t)(ptr) & 0xffff800000000000ULL) == 0xffff800000000000ULL \
2146	\|\| ((uintptr_t)(ptr) & 0xffff800000000000ULL) == 0) )
2147	# endif /* !IN_RING3 */
2148
2149	#elif defined(RT_ARCH_X86)
2150	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U )
2151
2152	#elif defined(RT_ARCH_SPARC64)
2153	# ifdef IN_RING3
2154	# if defined(RT_OS_SOLARIS)
2155	/** Sparc64 user mode: According to Figure 9.4 in solaris internals */
2156	/** @todo # define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x80004000U >= 0x80004000U + 0x100000000ULL ) - figure this. */
2157	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x80000000U >= 0x80000000U + 0x100000000ULL )
2158	# else
2159	# error "Port me"
2160	# endif
2161	# else /* !IN_RING3 */
2162	# if defined(RT_OS_SOLARIS)
2163	/** @todo Sparc64 kernel mode: This is according to Figure 11.1 in solaris
2164	* internals. Verify in sources. */
2165	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) >= 0x01000000U )
2166	# else
2167	# error "Port me"
2168	# endif
2169	# endif /* !IN_RING3 */
2170
2171	#elif defined(RT_ARCH_SPARC)
2172	# ifdef IN_RING3
2173	# ifdef RT_OS_SOLARIS
2174	/** Sparc user mode: According to
2175	* http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/sun4/os/startup.c#510 */
2176	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x400000U >= 0x400000U + 0x2000U )
2177
2178	# else
2179	# error "Port me"
2180	# endif
2181	# else /* !IN_RING3 */
2182	# ifdef RT_OS_SOLARIS
2183	/** @todo Sparc kernel mode: Check the sources! */
2184	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U )
2185	# else
2186	# error "Port me"
2187	# endif
2188	# endif /* !IN_RING3 */
2189
2190	#elif defined(RT_ARCH_ARM)
2191	/* ASSUMES that at least the last and first 4K are out of bounds. */
2192	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U )
2193
2194	#else
2195	# error "Architecture identifier missing / not implemented."
2196	#endif
2197
2198	/** Old name for RT_VALID_PTR. */
2199	#define VALID_PTR(ptr) RT_VALID_PTR(ptr)
2200
2201	/** @def RT_VALID_ALIGNED_PTR
2202	* Pointer validation macro that also checks the alignment.
2203	* @param ptr The pointer.
2204	* @param align The alignment, must be a power of two.
2205	*/
2206	#define RT_VALID_ALIGNED_PTR(ptr, align) \
2207	( !((uintptr_t)(ptr) & (uintptr_t)((align) - 1)) \
2208	&& VALID_PTR(ptr) )
2209
2210
2211	/** @def VALID_PHYS32
2212	* 32 bits physical address validation macro.
2213	* @param Phys The RTGCPHYS address.
2214	*/
2215	#define VALID_PHYS32(Phys) ( (uint64_t)(Phys) < (uint64_t)_4G )
2216
2217	/** @def N_
2218	* The \#define N_ is used to mark a string for translation. This is usable in
2219	* any part of the code, as it is only used by the tools that create message
2220	* catalogs. This macro is a no-op as far as the compiler and code generation
2221	* is concerned.
2222	*
2223	* If you want to both mark a string for translation and translate it, use _().
2224	*/
2225	#define N_(s) (s)
2226
2227	/** @def _
2228	* The \#define _ is used to mark a string for translation and to translate it
2229	* in one step.
2230	*
2231	* If you want to only mark a string for translation, use N_().
2232	*/
2233	#define _(s) gettext(s)
2234
2235
2236	/** @def __PRETTY_FUNCTION__
2237	* With GNU C we'd like to use the builtin __PRETTY_FUNCTION__, so define that
2238	* for the other compilers.
2239	*/
2240	#if !defined(__GNUC__) && !defined(__PRETTY_FUNCTION__)
2241	# ifdef _MSC_VER
2242	# define __PRETTY_FUNCTION__ __FUNCSIG__
2243	# else
2244	# define __PRETTY_FUNCTION__ __FUNCTION__
2245	# endif
2246	#endif
2247
2248
2249	/** @def RT_STRICT
2250	* The \#define RT_STRICT controls whether or not assertions and other runtime
2251	* checks should be compiled in or not. This is defined when DEBUG is defined.
2252	* If RT_NO_STRICT is defined, it will unconditionally be undefined.
2253	*
2254	* If you want assertions which are not subject to compile time options use
2255	* the AssertRelease*() flavors.
2256	*/
2257	#if !defined(RT_STRICT) && defined(DEBUG)
2258	# define RT_STRICT
2259	#endif
2260	#ifdef RT_NO_STRICT
2261	# undef RT_STRICT
2262	#endif
2263
2264	/** @todo remove this: */
2265	#if !defined(RT_LOCK_STRICT) && !defined(DEBUG_bird)
2266	# define RT_LOCK_NO_STRICT
2267	#endif
2268	#if !defined(RT_LOCK_STRICT_ORDER) && !defined(DEBUG_bird)
2269	# define RT_LOCK_NO_STRICT_ORDER
2270	#endif
2271
2272	/** @def RT_LOCK_STRICT
2273	* The \#define RT_LOCK_STRICT controls whether deadlock detection and related
2274	* checks are done in the lock and semaphore code. It is by default enabled in
2275	* RT_STRICT builds, but this behavior can be overridden by defining
2276	* RT_LOCK_NO_STRICT. */
2277	#if !defined(RT_LOCK_STRICT) && !defined(RT_LOCK_NO_STRICT) && defined(RT_STRICT)
2278	# define RT_LOCK_STRICT
2279	#endif
2280	/** @def RT_LOCK_NO_STRICT
2281	* The \#define RT_LOCK_NO_STRICT disables RT_LOCK_STRICT. */
2282	#if defined(RT_LOCK_NO_STRICT) && defined(RT_LOCK_STRICT)
2283	# undef RT_LOCK_STRICT
2284	#endif
2285
2286	/** @def RT_LOCK_STRICT_ORDER
2287	* The \#define RT_LOCK_STRICT_ORDER controls whether locking order is checked
2288	* by the lock and semaphore code. It is by default enabled in RT_STRICT
2289	* builds, but this behavior can be overridden by defining
2290	* RT_LOCK_NO_STRICT_ORDER. */
2291	#if !defined(RT_LOCK_STRICT_ORDER) && !defined(RT_LOCK_NO_STRICT_ORDER) && defined(RT_STRICT)
2292	# define RT_LOCK_STRICT_ORDER
2293	#endif
2294	/** @def RT_LOCK_NO_STRICT_ORDER
2295	* The \#define RT_LOCK_NO_STRICT_ORDER disables RT_LOCK_STRICT_ORDER. */
2296	#if defined(RT_LOCK_NO_STRICT_ORDER) && defined(RT_LOCK_STRICT_ORDER)
2297	# undef RT_LOCK_STRICT_ORDER
2298	#endif
2299
2300
2301	/** Source position. */
2302	#define RT_SRC_POS __FILE__, __LINE__, __PRETTY_FUNCTION__
2303
2304	/** Source position declaration. */
2305	#define RT_SRC_POS_DECL const char pszFile, unsigned iLine, const char pszFunction
2306
2307	/** Source position arguments. */
2308	#define RT_SRC_POS_ARGS pszFile, iLine, pszFunction
2309
2310	/** Applies NOREF() to the source position arguments. */
2311	#define RT_SRC_POS_NOREF() do { NOREF(pszFile); NOREF(iLine); NOREF(pszFunction); } while (0)
2312
2313
2314	/** @def RT_INLINE_ASM_EXTERNAL
2315	* Defined as 1 if the compiler does not support inline assembly.
2316	* The ASM* functions will then be implemented in external .asm files.
2317	*/
2318	#if (defined(_MSC_VER) && defined(RT_ARCH_AMD64)) \
2319	\|\| (!defined(RT_ARCH_AMD64) && !defined(RT_ARCH_X86))
2320	# define RT_INLINE_ASM_EXTERNAL 1
2321	#else
2322	# define RT_INLINE_ASM_EXTERNAL 0
2323	#endif
2324
2325	/** @def RT_INLINE_ASM_GNU_STYLE
2326	* Defined as 1 if the compiler understands GNU style inline assembly.
2327	*/
2328	#if defined(_MSC_VER)
2329	# define RT_INLINE_ASM_GNU_STYLE 0
2330	#else
2331	# define RT_INLINE_ASM_GNU_STYLE 1
2332	#endif
2333
2334	/** @def RT_INLINE_ASM_USES_INTRIN
2335	* Defined as 1 if the compiler have and uses intrin.h. Otherwise it is 0. */
2336	#ifdef _MSC_VER
2337	# if _MSC_VER >= 1400
2338	# define RT_INLINE_ASM_USES_INTRIN 1
2339	# endif
2340	#endif
2341	#ifndef RT_INLINE_ASM_USES_INTRIN
2342	# define RT_INLINE_ASM_USES_INTRIN 0
2343	#endif
2344
2345	/** @} */
2346
2347
2348	/** @defgroup grp_rt_cdefs_cpp Special Macros for C++
2349	* @ingroup grp_rt_cdefs
2350	* @{
2351	*/
2352
2353	#ifdef __cplusplus
2354
2355	/** @def DECLEXPORT_CLASS
2356	* How to declare an exported class. Place this macro after the 'class'
2357	* keyword in the declaration of every class you want to export.
2358	*
2359	* @note It is necessary to use this macro even for inner classes declared
2360	* inside the already exported classes. This is a GCC specific requirement,
2361	* but it seems not to harm other compilers.
2362	*/
2363	#if defined(_MSC_VER) \|\| defined(RT_OS_OS2)
2364	# define DECLEXPORT_CLASS __declspec(dllexport)
2365	#elif defined(RT_USE_VISIBILITY_DEFAULT)
2366	# define DECLEXPORT_CLASS __attribute__((visibility("default")))
2367	#else
2368	# define DECLEXPORT_CLASS
2369	#endif
2370
2371	/** @def DECLIMPORT_CLASS
2372	* How to declare an imported class Place this macro after the 'class'
2373	* keyword in the declaration of every class you want to export.
2374	*
2375	* @note It is necessary to use this macro even for inner classes declared
2376	* inside the already exported classes. This is a GCC specific requirement,
2377	* but it seems not to harm other compilers.
2378	*/
2379	#if defined(_MSC_VER) \|\| (defined(RT_OS_OS2) && !defined(__IBMC__) && !defined(__IBMCPP__))
2380	# define DECLIMPORT_CLASS __declspec(dllimport)
2381	#elif defined(RT_USE_VISIBILITY_DEFAULT)
2382	# define DECLIMPORT_CLASS __attribute__((visibility("default")))
2383	#else
2384	# define DECLIMPORT_CLASS
2385	#endif
2386
2387	/** @def WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP
2388	* Macro to work around error C2593 of the not-so-smart MSVC 7.x ambiguity
2389	* resolver. The following snippet clearly demonstrates the code causing this
2390	* error:
2391	* @code
2392	* class A
2393	* {
2394	* public:
2395	* operator bool() const { return false; }
2396	* operator int*() const { return NULL; }
2397	* };
2398	* int main()
2399	* {
2400	* A a;
2401	* if (!a);
2402	* if (a && 0);
2403	* return 0;
2404	* }
2405	* @endcode
2406	* The code itself seems pretty valid to me and GCC thinks the same.
2407	*
2408	* This macro fixes the compiler error by explicitly overloading implicit
2409	* global operators !, && and \|\| that take the given class instance as one of
2410	* their arguments.
2411	*
2412	* The best is to use this macro right after the class declaration.
2413	*
2414	* @note The macro expands to nothing for compilers other than MSVC.
2415	*
2416	* @param Cls Class to apply the workaround to
2417	*/
2418	#if defined(_MSC_VER)
2419	# define WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP(Cls) \
2420	inline bool operator! (const Cls &that) { return !bool (that); } \
2421	inline bool operator&& (const Cls &that, bool b) { return bool (that) && b; } \
2422	inline bool operator\|\| (const Cls &that, bool b) { return bool (that) \|\| b; } \
2423	inline bool operator&& (bool b, const Cls &that) { return b && bool (that); } \
2424	inline bool operator\|\| (bool b, const Cls &that) { return b \|\| bool (that); }
2425	#else
2426	# define WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP(Cls)
2427	#endif
2428
2429	/** @def WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP_TPL
2430	* Version of WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP for template classes.
2431	*
2432	* @param Tpl Name of the template class to apply the workaround to
2433	* @param ArgsDecl arguments of the template, as declared in \|<>\| after the
2434	* \|template\| keyword, including \|<>\|
2435	* @param Args arguments of the template, as specified in \|<>\| after the
2436	* template class name when using the, including \|<>\|
2437	*
2438	* Example:
2439	* @code
2440	* // template class declaration
2441	* template <class C>
2442	* class Foo { ... };
2443	* // applied workaround
2444	* WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP_TPL (Foo, <class C>, <C>)
2445	* @endcode
2446	*/
2447	#if defined(_MSC_VER)
2448	# define WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP_TPL(Tpl, ArgsDecl, Args) \
2449	template ArgsDecl \
2450	inline bool operator! (const Tpl Args &that) { return !bool (that); } \
2451	template ArgsDecl \
2452	inline bool operator&& (const Tpl Args &that, bool b) { return bool (that) && b; } \
2453	template ArgsDecl \
2454	inline bool operator\|\| (const Tpl Args &that, bool b) { return bool (that) \|\| b; } \
2455	template ArgsDecl \
2456	inline bool operator&& (bool b, const Tpl Args &that) { return b && bool (that); } \
2457	template ArgsDecl \
2458	inline bool operator\|\| (bool b, const Tpl Args &that) { return b \|\| bool (that); }
2459	#else
2460	# define WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP_TPL(Tpl, ArgsDecl, Args)
2461	#endif
2462
2463
2464	/** @def DECLARE_CLS_COPY_CTOR_ASSIGN_NOOP
2465	* Declares the copy constructor and the assignment operation as inlined no-ops
2466	* (non-existent functions) for the given class. Use this macro inside the
2467	* private section if you want to effectively disable these operations for your
2468	* class.
2469	*
2470	* @param Cls class name to declare for
2471	*/
2472
2473	#define DECLARE_CLS_COPY_CTOR_ASSIGN_NOOP(Cls) \
2474	inline Cls (const Cls &); \
2475	inline Cls &operator= (const Cls &);
2476
2477
2478	/** @def DECLARE_CLS_NEW_DELETE_NOOP
2479	* Declares the new and delete operations as no-ops (non-existent functions)
2480	* for the given class. Use this macro inside the private section if you want
2481	* to effectively limit creating class instances on the stack only.
2482	*
2483	* @note The destructor of the given class must not be virtual, otherwise a
2484	* compile time error will occur. Note that this is not a drawback: having
2485	* the virtual destructor for a stack-based class is absolutely useless
2486	* (the real class of the stack-based instance is always known to the compiler
2487	* at compile time, so it will always call the correct destructor).
2488	*
2489	* @param Cls class name to declare for
2490	*/
2491	#define DECLARE_CLS_NEW_DELETE_NOOP(Cls) \
2492	inline static void *operator new (size_t); \
2493	inline static void operator delete (void *);
2494
2495	#endif /* __cplusplus */
2496
2497	/** @} */
2498
2499	#endif
2500

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