80 lines
2.3 KiB
C
Executable File
80 lines
2.3 KiB
C
Executable File
/*
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* Copyright (C), 2018-2019, Arm Technology (China) Co., Ltd.
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* All rights reserved
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*
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* The content of this file or document is CONFIDENTIAL and PROPRIETARY
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* to Arm Technology (China) Co., Ltd. It is subject to the terms of a
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* License Agreement between Licensee and Arm Technology (China) Co., Ltd
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* restricting among other things, the use, reproduction, distribution
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* and transfer. Each of the embodiments, including this information and,,
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* any derivative work shall retain this copyright notice.
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*/
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#ifndef __COMPILER_H__
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#define __COMPILER_H__
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/* MACRO in c language */
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#ifndef __ASSEMBLY__
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#if __GNUC__
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#define likely(x) __builtin_expect(!!(x), 1L)
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#define unlikely(x) __builtin_expect(!!(x), 0L)
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#define __PRINTFLIKE(f, v) __attribute__((format (printf, f, v)))
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#define __UNUSED __attribute__((__unused__))
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#ifndef __USED
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#define __USED __attribute__((__used__))
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#endif
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#ifndef __PACKED
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#define __PACKED __attribute__((packed))
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#endif
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#ifndef __ALIGNED
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#define __ALIGNED(x) __attribute__((aligned(x)))
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#endif
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/* look for gcc 3.0 and above */
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#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 0)
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#define __ALWAYS_INLINE __attribute__((always_inline))
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#else
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#define __ALWAYS_INLINE
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#endif
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#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
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/* the may_alias attribute was introduced in gcc 3.3; before that, there
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* was no way to specify aliasiang rules on a type-by-type basis */
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#define __MAY_ALIAS __attribute__((may_alias))
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/* nonnull was added in gcc 3.3 as well */
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#define __NONNULL(x) __attribute((nonnull x))
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#else
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#define __MAY_ALIAS
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#define __NONNULL(x)
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#endif
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#define __SECTION(x) __attribute((section(x)))
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#define __WEAK __attribute__((weak))
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#define __GNU_INLINE __attribute__((gnu_inline))
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#define __NAKED __attribute__((naked))
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#define __NO_INLINE __attribute((noinline))
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/* compiler_barrier */
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#define __CB() do { \
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__asm__ __volatile__ ("" ::: "memory"); \
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} while ((0))
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#else /* ! __GNUC__ */
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#define likely(x) (x)
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#define unlikely(x) (x)
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#define __PRINTFLIKE(f, v)
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#define __UNUSED
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#define __USED
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#define __PACKED
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#define __ALIGNED(x)
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#define __ALWAYS_INLINE
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#define __MAY_ALIAS
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#define __SECTION(x)
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#define __WEAK
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#endif /* __GNUC__ */
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#endif /* __ASSEMBLY__ */
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#endif /* __COMPILER_H__ */
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