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source: kStuff/trunk/include/k/kDefs.h@ 116

Last change on this file since 116 was 116, checked in by bird, 6 years ago

kDefs.h: Fixed K_ENDIAN. [2nd try]

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1/* $Id: kDefs.h 116 2019-01-08 19:23:20Z bird $ */
2/** @file
3 * kTypes - Defines and Macros.
4 */
5
6/*
7 * Copyright (c) 2006-2017 Knut St. Osmundsen <[email protected]>
8 *
9 * Permission is hereby granted, free of charge, to any person
10 * obtaining a copy of this software and associated documentation
11 * files (the "Software"), to deal in the Software without
12 * restriction, including without limitation the rights to use,
13 * copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following
16 * conditions:
17 *
18 * The above copyright notice and this permission notice shall be
19 * included in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28 * OTHER DEALINGS IN THE SOFTWARE.
29 */
30
31#ifndef ___k_kDefs_h___
32#define ___k_kDefs_h___
33
34/** @defgroup grp_kDefs kDefs - Defines and Macros
35 * @{ */
36
37/** @name Operative System Identifiers.
38 * These are the value that the K_OS \#define can take.
39 * @{
40 */
41/** Unknown OS. */
42#define K_OS_UNKNOWN 0
43/** Darwin - aka Mac OS X. */
44#define K_OS_DARWIN 1
45/** DragonFly BSD. */
46#define K_OS_DRAGONFLY 2
47/** FreeBSD. */
48#define K_OS_FREEBSD 3
49/** GNU/Hurd. */
50#define K_OS_GNU_HURD 4
51/** GNU/kFreeBSD. */
52#define K_OS_GNU_KFBSD 5
53/** GNU/kNetBSD or GNU/NetBSD or whatever the decide to call it. */
54#define K_OS_GNU_KNBSD 6
55/** Haiku. */
56#define K_OS_HAIKU 7
57/** Linux. */
58#define K_OS_LINUX 8
59/** NetBSD. */
60#define K_OS_NETBSD 9
61/** NT (native). */
62#define K_OS_NT 10
63/** OpenBSD*/
64#define K_OS_OPENBSD 11
65/** OS/2 */
66#define K_OS_OS2 12
67/** Solaris */
68#define K_OS_SOLARIS 13
69/** Windows. */
70#define K_OS_WINDOWS 14
71/** The max K_OS_* value (exclusive). */
72#define K_OS_MAX 15
73/** @} */
74
75/** @def K_OS
76 * Indicates which OS we're targetting. It's a \#define with is
77 * assigned one of the K_OS_* defines above.
78 *
79 * So to test if we're on FreeBSD do the following:
80 * @code
81 * #if K_OS == K_OS_FREEBSD
82 * some_funky_freebsd_specific_stuff();
83 * #endif
84 * @endcode
85 */
86#ifndef K_OS
87# if defined(__APPLE__)
88# define K_OS K_OS_DARWIN
89# elif defined(__DragonFly__)
90# define K_OS K_OS_DRAGONFLY
91# elif defined(__FreeBSD__)
92# define K_OS K_OS_FREEBSD
93# elif defined(__FreeBSD_kernel__)
94# define K_OS K_OS_GNU_KFBSD
95# elif defined(__gnu_hurd__)
96# define K_OS K_OS_GNU_HURD
97# elif defined(__gnu_linux__)
98# define K_OS K_OS_LINUX
99# elif defined(__NetBSD__) /*??*/
100# define K_OS K_OS_NETBSD
101# elif defined(__NetBSD_kernel__)
102# define K_OS K_OS_GNU_KNBSD
103# elif defined(__OpenBSD__) /*??*/
104# define K_OS K_OS_OPENBSD
105# elif defined(__OS2__)
106# define K_OS K_OS_OS2
107# elif defined(__sun__) || defined(__SunOS__) || defined(__sun) || defined(__SunOS)
108# define K_OS K_OS_SOLARIS
109# elif defined(_WIN32) || defined(_WIN64)
110# define K_OS K_OS_WINDOWS
111# elif defined(__haiku__) || defined(__HAIKU__)
112# define K_OS K_OS_HAIKU
113# else
114# error "Port Me"
115# endif
116#endif
117#if K_OS < K_OS_UNKNOWN || K_OS >= K_OS_MAX
118# error "Invalid K_OS value."
119#endif
120
121
122
123/** @name Architecture bit width.
124 * @{ */
125#define K_ARCH_BIT_8 0x0100 /**< 8-bit */
126#define K_ARCH_BIT_16 0x0200 /**< 16-bit */
127#define K_ARCH_BIT_32 0x0400 /**< 32-bit */
128#define K_ARCH_BIT_64 0x0800 /**< 64-bit */
129#define K_ARCH_BIT_128 0x1000 /**< 128-bit */
130#define K_ARCH_BIT_MASK 0x1f00 /**< The bit mask. */
131#define K_ARCH_BIT_SHIFT 5 /**< Shift count for producing the width in bits. */
132#define K_ARCH_BYTE_SHIFT 8 /**< Shift count for producing the width in bytes. */
133/** @} */
134
135/** @name Architecture Endianness.
136 * @{ */
137#define K_ARCH_END_LITTLE 0x2000 /**< Little-endian. */
138#define K_ARCH_END_BIG 0x4000 /**< Big-endian. */
139#define K_ARCH_END_BI 0x6000 /**< Bi-endian, can be switched. */
140#define K_ARCH_END_MASK 0x6000 /**< The endian mask. */
141#define K_ARCH_END_SHIFT 13 /**< Shift count for converting between this K_ENDIAN_*. */
142/** @} */
143
144/** @name Architecture Identifiers.
145 * These are the value that the K_ARCH \#define can take.
146 *@{ */
147/** Unknown CPU architecture. */
148#define K_ARCH_UNKNOWN ( 0 )
149/** Clone or Intel 16-bit x86. */
150#define K_ARCH_X86_16 ( 1 | K_ARCH_BIT_16 | K_ARCH_END_LITTLE)
151/** Clone or Intel 32-bit x86. */
152#define K_ARCH_X86_32 ( 1 | K_ARCH_BIT_32 | K_ARCH_END_LITTLE)
153/** AMD64 (including clones). */
154#define K_ARCH_AMD64 ( 2 | K_ARCH_BIT_64 | K_ARCH_END_LITTLE)
155/** Itanic (64-bit). */
156#define K_ARCH_IA64 ( 3 | K_ARCH_BIT_64 | K_ARCH_END_BI)
157/** ALPHA (64-bit). */
158#define K_ARCH_ALPHA ( 4 | K_ARCH_BIT_64 | K_ARCH_END_BI)
159/** ALPHA limited to 32-bit. */
160#define K_ARCH_ALPHA_32 ( 4 | K_ARCH_BIT_32 | K_ARCH_END_BI)
161/** 32-bit ARM. */
162#define K_ARCH_ARM_32 ( 5 | K_ARCH_BIT_32 | K_ARCH_END_BI)
163/** 64-bit ARM. */
164#define K_ARCH_ARM_64 ( 5 | K_ARCH_BIT_64 | K_ARCH_END_BI)
165/** Motorola 68000 (32-bit). */
166#define K_ARCH_M68K ( 6 | K_ARCH_BIT_32 | K_ARCH_END_BIG)
167/** 32-bit MIPS. */
168#define K_ARCH_MIPS_32 ( 7 | K_ARCH_BIT_32 | K_ARCH_END_BI)
169/** 64-bit MIPS. */
170#define K_ARCH_MIPS_64 ( 7 | K_ARCH_BIT_64 | K_ARCH_END_BI)
171/** 32-bit PA-RISC. */
172#define K_ARCH_PARISC_32 ( 8 | K_ARCH_BIT_32 | K_ARCH_END_BI)
173/** 64-bit PA-RISC. */
174#define K_ARCH_PARISC_64 ( 8 | K_ARCH_BIT_64 | K_ARCH_END_BI)
175/** 32-bit PowerPC. */
176#define K_ARCH_POWERPC_32 ( 9 | K_ARCH_BIT_32 | K_ARCH_END_BI)
177/** 64-bit PowerPC. */
178#define K_ARCH_POWERPC_64 ( 9 | K_ARCH_BIT_64 | K_ARCH_END_BI)
179/** 32(31)-bit S390. */
180#define K_ARCH_S390_32 (10 | K_ARCH_BIT_32 | K_ARCH_END_BIG)
181/** 64-bit S390. */
182#define K_ARCH_S390_64 (10 | K_ARCH_BIT_64 | K_ARCH_END_BIG)
183/** 32-bit SuperH. */
184#define K_ARCH_SH_32 (11 | K_ARCH_BIT_32 | K_ARCH_END_BI)
185/** 64-bit SuperH. */
186#define K_ARCH_SH_64 (11 | K_ARCH_BIT_64 | K_ARCH_END_BI)
187/** 32-bit SPARC. */
188#define K_ARCH_SPARC_32 (12 | K_ARCH_BIT_32 | K_ARCH_END_BIG)
189/** 64-bit SPARC. */
190#define K_ARCH_SPARC_64 (12 | K_ARCH_BIT_64 | K_ARCH_END_BI)
191/** The end of the valid architecture values (exclusive). */
192#define K_ARCH_MAX (12+1)
193/** @} */
194
195
196/** @def K_ARCH
197 * The value of this \#define indicates which architecture we're targetting.
198 */
199#ifndef K_ARCH
200 /* detection based on compiler defines. */
201# if defined(__amd64__) || defined(__x86_64__) || defined(__AMD64__) || defined(_M_X64) || defined(__amd64)
202# define K_ARCH K_ARCH_AMD64
203# elif defined(__i386__) || defined(__x86__) || defined(__X86__) || defined(_M_IX86) || defined(__i386)
204# define K_ARCH K_ARCH_X86_32
205# elif defined(__ia64__) || defined(__IA64__) || defined(_M_IA64)
206# define K_ARCH K_ARCH_IA64
207# elif defined(__alpha__)
208# define K_ARCH K_ARCH_ALPHA
209# elif defined(__arm__) || defined(__arm32__)
210# define K_ARCH K_ARCH_ARM_32
211# elif defined(__aarch64__) || defined(__arm64__)
212# define K_ARCH K_ARCH_ARM_64
213# elif defined(__hppa__) && defined(__LP64__)
214# define K_ARCH K_ARCH_PARISC_64
215# elif defined(__hppa__)
216# define K_ARCH K_ARCH_PARISC_32
217# elif defined(__m68k__)
218# define K_ARCH K_ARCH_M68K
219# elif defined(__mips64)
220# define K_ARCH K_ARCH_MIPS_64
221# elif defined(__mips__)
222# define K_ARCH K_ARCH_MIPS_32
223# elif defined(__powerpc64__) || defined(__ppc64__) || defined(__PPC64__)
224# define K_ARCH K_ARCH_POWERPC_64
225# elif defined(__powerpc__) || defined(__ppc__) || defined(__PPC__)
226# define K_ARCH K_ARCH_POWERPC_32
227# elif defined(__sparcv9__) || defined(__sparcv9)
228# define K_ARCH K_ARCH_SPARC_64
229# elif defined(__sparc__) || defined(__sparc)
230# define K_ARCH K_ARCH_SPARC_32
231# elif defined(__s390x__)
232# define K_ARCH K_ARCH_S390_64
233# elif defined(__s390__)
234# define K_ARCH K_ARCH_S390_32
235# elif defined(__sh__)
236# if !defined(__SH5__)
237# define K_ARCH K_ARCH_SH_32
238# else
239# if __SH5__ == 64
240# define K_ARCH K_ARCH_SH_64
241# else
242# define K_ARCH K_ARCH_SH_32
243# endif
244# endif
245# else
246# error "Port Me"
247# endif
248#else
249 /* validate the user specified value. */
250# if (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_8 \
251 && (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_16 \
252 && (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_32 \
253 && (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_64 \
254 && (K_ARCH & K_ARCH_BIT_MASK) != K_ARCH_BIT_128
255# error "Invalid K_ARCH value (bit)"
256# endif
257# if (K_ARCH & K_ARCH_END_MASK) != K_ARCH_END_LITTLE \
258 && (K_ARCH & K_ARCH_END_MASK) != K_ARCH_END_BIG \
259 && (K_ARCH & K_ARCH_END_MASK) != K_ARCH_END_BI
260# error "Invalid K_ARCH value (endian)"
261# endif
262# if (K_ARCH & ~(K_ARCH_BIT_MASK | K_ARCH_BIT_END_MASK)) < K_ARCH_UNKNOWN \
263 || (K_ARCH & ~(K_ARCH_BIT_MASK | K_ARCH_BIT_END_MASK)) >= K_ARCH_MAX
264# error "Invalid K_ARCH value"
265# endif
266#endif
267
268/** @def K_ARCH_IS_VALID
269 * Check if the architecture identifier is valid.
270 * @param arch The K_ARCH_* define to examin.
271 */
272#define K_ARCH_IS_VALID(arch) ( ( ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_8 \
273 || ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_16 \
274 || ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_32 \
275 || ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_64 \
276 || ((arch) & K_ARCH_BIT_MASK) == K_ARCH_BIT_128) \
277 && \
278 ( ((arch) & K_ARCH_END_MASK) == K_ARCH_END_LITTLE \
279 || ((arch) & K_ARCH_END_MASK) == K_ARCH_END_BIG \
280 || ((arch) & K_ARCH_END_MASK) == K_ARCH_END_BI) \
281 && \
282 ( ((arch) & ~(K_ARCH_BIT_MASK | K_ARCH_END_MASK)) >= K_ARCH_UNKNOWN \
283 && ((arch) & ~(K_ARCH_BIT_MASK | K_ARCH_END_MASK)) < K_ARCH_MAX) \
284 )
285
286/** @def K_ARCH_BITS_EX
287 * Determin the architure byte width of the specified architecture.
288 * @param arch The K_ARCH_* define to examin.
289 */
290#define K_ARCH_BITS_EX(arch) ( ((arch) & K_ARCH_BIT_MASK) >> K_ARCH_BIT_SHIFT )
291
292/** @def K_ARCH_BYTES_EX
293 * Determin the architure byte width of the specified architecture.
294 * @param arch The K_ARCH_* define to examin.
295 */
296#define K_ARCH_BYTES_EX(arch) ( ((arch) & K_ARCH_BIT_MASK) >> K_ARCH_BYTE_SHIFT )
297
298/** @def K_ARCH_ENDIAN_EX
299 * Determin the K_ENDIAN value for the specified architecture.
300 * @param arch The K_ARCH_* define to examin.
301 */
302#define K_ARCH_ENDIAN_EX(arch) ( ((arch) & K_ARCH_END_MASK) >> K_ARCH_END_SHIFT )
303
304/** @def K_ARCH_BITS
305 * Determin the target architure bit width.
306 */
307#define K_ARCH_BITS K_ARCH_BITS_EX(K_ARCH)
308
309/** @def K_ARCH_BYTES
310 * Determin the target architure byte width.
311 */
312#define K_ARCH_BYTES K_ARCH_BYTES_EX(K_ARCH)
313
314/** @def K_ARCH_ENDIAN
315 * Determin the target K_ENDIAN value.
316 */
317#define K_ARCH_ENDIAN K_ARCH_ENDIAN_EX(K_ARCH)
318
319
320
321/** @name Endianness Identifiers.
322 * These are the value that the K_ENDIAN \#define can take.
323 * @{ */
324#define K_ENDIAN_LITTLE 1 /**< Little-endian. */
325#define K_ENDIAN_BIG 2 /**< Big-endian. */
326#define K_ENDIAN_BI 3 /**< Bi-endian, can be switched. Only used with K_ARCH. */
327/** @} */
328
329/** @def K_ENDIAN
330 * The value of this \#define indicates the target endianness.
331 *
332 * @remark It's necessary to define this (or add the necessary deduction here)
333 * on bi-endian architectures.
334 */
335#ifndef K_ENDIAN
336 /* use K_ARCH if possible. */
337# if K_ARCH_ENDIAN != K_ENDIAN_BI
338# define K_ENDIAN K_ARCH_ENDIAN
339# elif defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && defined(__ORDER_BIG_ENDIAN__)
340# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
341# define K_ENDIAN K_ENDIAN_LITTLE
342# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
343# define K_ENDIAN K_ENDIAN_BIG
344# else
345# error "Port Me or define K_ENDIAN."
346# endif
347# else
348# error "Port Me or define K_ENDIAN."
349# endif
350#else
351 /* validate the user defined value. */
352# if K_ENDIAN != K_ENDIAN_LITTLE \
353 && K_ENDIAN != K_ENDIAN_BIG
354# error "K_ENDIAN must either be defined as K_ENDIAN_LITTLE or as K_ENDIAN_BIG."
355# endif
356#endif
357
358/** @name Endian Conversion
359 * @{ */
360
361/** @def K_E2E_U16
362 * Convert the endian of an unsigned 16-bit value. */
363# define K_E2E_U16(u16) ( (KU16) (((u16) >> 8) | ((u16) << 8)) )
364/** @def K_E2E_U32
365 * Convert the endian of an unsigned 32-bit value. */
366# define K_E2E_U32(u32) ( ( ((u32) & KU32_C(0xff000000)) >> 24 ) \
367 | ( ((u32) & KU32_C(0x00ff0000)) >> 8 ) \
368 | ( ((u32) & KU32_C(0x0000ff00)) << 8 ) \
369 | ( ((u32) & KU32_C(0x000000ff)) << 24 ) \
370 )
371/** @def K_E2E_U64
372 * Convert the endian of an unsigned 64-bit value. */
373# define K_E2E_U64(u64) ( ( ((u64) & KU64_C(0xff00000000000000)) >> 56 ) \
374 | ( ((u64) & KU64_C(0x00ff000000000000)) >> 40 ) \
375 | ( ((u64) & KU64_C(0x0000ff0000000000)) >> 24 ) \
376 | ( ((u64) & KU64_C(0x000000ff00000000)) >> 8 ) \
377 | ( ((u64) & KU64_C(0x00000000ff000000)) << 8 ) \
378 | ( ((u64) & KU64_C(0x0000000000ff0000)) << 24 ) \
379 | ( ((u64) & KU64_C(0x000000000000ff00)) << 40 ) \
380 | ( ((u64) & KU64_C(0x00000000000000ff)) << 56 ) \
381 )
382
383/** @def K_LE2H_U16
384 * Unsigned 16-bit little-endian to host endian. */
385/** @def K_LE2H_U32
386 * Unsigned 32-bit little-endian to host endian. */
387/** @def K_LE2H_U64
388 * Unsigned 64-bit little-endian to host endian. */
389/** @def K_BE2H_U16
390 * Unsigned 16-bit big-endian to host endian. */
391/** @def K_BE2H_U32
392 * Unsigned 32-bit big-endian to host endian. */
393/** @def K_BE2H_U64
394 * Unsigned 64-bit big-endian to host endian. */
395#if K_ENDIAN == K_ENDIAN_LITTLE
396# define K_LE2H_U16(u16) ((KU16)(u16))
397# define K_LE2H_U32(u32) ((KU32)(u32))
398# define K_LE2H_U64(u64) ((KU64)(u32))
399# define K_BE2H_U16(u16) K_E2E_U16(u16)
400# define K_BE2H_U32(u32) K_E2E_U32(u32)
401# define K_BE2H_U64(u64) K_E2E_U64(u64)
402#else
403# define K_LE2H_U16(u16) K_E2E_U16(u16)
404# define K_LE2H_U32(u32) K_E2E_U32(u32)
405# define K_LE2H_U64(u64) K_E2E_U64(u64)
406# define K_BE2H_U16(u16) ((KU16)(u16))
407# define K_BE2H_U32(u32) ((KU32)(u32))
408# define K_BE2H_U64(u64) ((KU64)(u32))
409#endif
410
411
412
413/** @def K_INLINE
414 * How to say 'inline' in both C and C++ dialects.
415 * @param type The return type.
416 */
417#ifdef __cplusplus
418# if defined(__GNUC__)
419# define K_INLINE static inline
420# else
421# define K_INLINE inline
422# endif
423#else
424# if defined(__GNUC__)
425# define K_INLINE static __inline__
426# elif defined(_MSC_VER)
427# define K_INLINE static __inline
428# else
429# error "Port Me"
430# endif
431#endif
432
433/** @def K_EXPORT
434 * What to put in front of an exported function.
435 */
436#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS
437# define K_EXPORT __declspec(dllexport)
438#else
439# define K_EXPORT
440#endif
441
442/** @def K_IMPORT
443 * What to put in front of an imported function.
444 */
445#if K_OS == K_OS_OS2 || K_OS == K_OS_WINDOWS
446# define K_IMPORT __declspec(dllimport)
447#else
448# define K_IMPORT extern
449#endif
450
451/** @def K_DECL_EXPORT
452 * Declare an exported function.
453 * @param type The return type.
454 */
455#define K_DECL_EXPORT(type) K_EXPORT type
456
457/** @def K_DECL_IMPORT
458 * Declare an import function.
459 * @param type The return type.
460 */
461#define K_DECL_IMPORT(type) K_IMPORT type
462
463/** @def K_DECL_INLINE
464 * Declare an inline function.
465 * @param type The return type.
466 * @remark Don't use on (class) methods.
467 */
468#define K_DECL_INLINE(type) K_INLINE type
469
470
471/** Get the minimum of two values. */
472#define K_MIN(a, b) ( (a) <= (b) ? (a) : (b) )
473/** Get the maximum of two values. */
474#define K_MAX(a, b) ( (a) >= (b) ? (a) : (b) )
475/** Calculate the offset of a structure member. */
476#define K_OFFSETOF(strct, memb) ( (KSIZE)( &((strct *)0)->memb ) )
477/** Align a size_t value. */
478#define K_ALIGN_Z(val, align) ( ((val) + ((align) - 1)) & ~(KSIZE)((align) - 1) )
479/** Align a void * value. */
480#define K_ALIGN_P(pv, align) ( (void *)( ((KUPTR)(pv) + ((align) - 1)) & ~(KUPTR)((align) - 1) ) )
481/** Number of elements in an array. */
482#define K_ELEMENTS(a) ( sizeof(a) / sizeof((a)[0]) )
483/** Checks if the specified pointer is a valid address or not. */
484#define K_VALID_PTR(ptr) ( (KUPTR)(ptr) + 0x1000U >= 0x2000U )
485/** Makes a 32-bit bit mask. */
486#define K_BIT32(bit) ( KU32_C(1) << (bit))
487/** Makes a 64-bit bit mask. */
488#define K_BIT64(bit) ( KU64_C(1) << (bit))
489/** Shuts up unused parameter and unused variable warnings. */
490#define K_NOREF(var) ( (void)(var) )
491
492
493/** @name Parameter validation macros
494 * @{ */
495
496/** Return/Crash validation of a string argument. */
497#define K_VALIDATE_STRING(str) \
498 do { \
499 if (!K_VALID_PTR(str)) \
500 return KERR_INVALID_POINTER; \
501 kHlpStrLen(str); \
502 } while (0)
503
504/** Return/Crash validation of an optional string argument. */
505#define K_VALIDATE_OPTIONAL_STRING(str) \
506 do { \
507 if (str) \
508 K_VALIDATE_STRING(str); \
509 } while (0)
510
511/** Return/Crash validation of an output buffer. */
512#define K_VALIDATE_BUFFER(buf, cb) \
513 do { \
514 if (!K_VALID_PTR(buf)) \
515 return KERR_INVALID_POINTER; \
516 if ((cb) != 0) \
517 { \
518 KU8 __b; \
519 KU8 volatile *__pb = (KU8 volatile *)(buf); \
520 KSIZE __cbPage1 = 0x1000 - ((KUPTR)(__pb) & 0xfff); /* ASSUMES page size! */ \
521 __b = *__pb; *__pb = 0xff; *__pb = __b; \
522 if ((cb) > __cbPage1) \
523 { \
524 KSIZE __cb = (cb) - __cbPage1; \
525 __pb -= __cbPage1; \
526 for (;;) \
527 { \
528 __b = *__pb; *__pb = 0xff; *__pb = __b; \
529 if (__cb < 0x1000) \
530 break; \
531 __pb += 0x1000; \
532 __cb -= 0x1000; \
533 } \
534 } \
535 } \
536 else \
537 return KERR_INVALID_PARAMETER; \
538 } while (0)
539
540/** Return/Crash validation of an optional output buffer. */
541#define K_VALIDATE_OPTIONAL_BUFFER(buf, cb) \
542 do { \
543 if ((buf) && (cb) != 0) \
544 K_VALIDATE_BUFFER(buf, cb); \
545 } while (0)
546
547/** Return validation of an enum argument. */
548#define K_VALIDATE_ENUM(arg, enumname) \
549 do { \
550 if ((arg) <= enumname##_INVALID || (arg) >= enumname##_END) \
551 return KERR_INVALID_PARAMETER; \
552 } while (0)
553
554/** Return validation of a flags argument. */
555#define K_VALIDATE_FLAGS(arg, AllowedMask) \
556 do { \
557 if ((arg) & ~(AllowedMask)) \
558 return KERR_INVALID_PARAMETER; \
559 } while (0)
560
561/** @} */
562
563/** @def NULL
564 * The nil pointer value. */
565#ifndef NULL
566# ifdef __cplusplus
567# define NULL 0
568# else
569# define NULL ((void *)0)
570# endif
571#endif
572
573/** @} */
574
575#endif
576
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