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CompilerSpecific.h
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1 /*
2  * @brief Special compiler's definitions
3  *
4  * @note
5  * Copyright(C) NXP Semiconductors, 2012
6  * Copyright(C) Dean Camera, 2011, 2012
7  * All rights reserved.
8  *
9  * @par
10  * Software that is described herein is for illustrative purposes only
11  * which provides customers with programming information regarding the
12  * LPC products. This software is supplied "AS IS" without any warranties of
13  * any kind, and NXP Semiconductors and its licensor disclaim any and
14  * all warranties, express or implied, including all implied warranties of
15  * merchantability, fitness for a particular purpose and non-infringement of
16  * intellectual property rights. NXP Semiconductors assumes no responsibility
17  * or liability for the use of the software, conveys no license or rights under any
18  * patent, copyright, mask work right, or any other intellectual property rights in
19  * or to any products. NXP Semiconductors reserves the right to make changes
20  * in the software without notification. NXP Semiconductors also makes no
21  * representation or warranty that such application will be suitable for the
22  * specified use without further testing or modification.
23  *
24  * @par
25  * Permission to use, copy, modify, and distribute this software and its
26  * documentation is hereby granted, under NXP Semiconductors' and its
27  * licensor's relevant copyrights in the software, without fee, provided that it
28  * is used in conjunction with NXP Semiconductors microcontrollers. This
29  * copyright, permission, and disclaimer notice must appear in all copies of
30  * this code.
31 */
32 
33 
34 
49 #ifndef __LPCUSBlib_COMPILERSPEC_H__
50 #define __LPCUSBlib_COMPILERSPEC_H__
51 
52  /* Preprocessor Checks: */
53  #if !defined(__INCLUDE_FROM_COMMON_H)
54  #error Do not include this file directly. Include LPCUSBlib/Common/Common.h instead to gain this functionality.
55  #endif
56 
57  /* Public Interface - May be used in end-application: */
58  /* Macros: */
59  #if defined(__GNUC__) || defined(__DOXYGEN__)
60 
68  #define GCC_FORCE_POINTER_ACCESS(StructPtr) __asm__ __volatile__("" : "=b" (StructPtr) : "0" (StructPtr))
69 
74  #define GCC_MEMORY_BARRIER() // FIXME __asm__ __volatile__("" ::: "memory");
75 
83  #define GCC_IS_COMPILE_CONST(x) __builtin_constant_p(x)
84  #else
85  #define GCC_FORCE_POINTER_ACCESS(StructPtr)
86  #define GCC_MEMORY_BARRIER()
87  #define GCC_IS_COMPILE_CONST(x) 0
88  #endif
89 
90 #endif
91