Zephyr API Documentation 4.3.99
A Scalable Open Source RTOS
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llvm.h
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1/*
2 * Copyright (c) 2021 Intel Corporation.
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7#ifndef ZEPHYR_INCLUDE_TOOLCHAIN_LLVM_H_
8#define ZEPHYR_INCLUDE_TOOLCHAIN_LLVM_H_
9
10#ifndef ZEPHYR_INCLUDE_TOOLCHAIN_H_
11#error Please do not include toolchain-specific headers directly, use <zephyr/toolchain.h> instead
12#endif
13
14#define __no_optimization __attribute__((optnone))
15
16#ifndef __fallthrough
17#if __clang_major__ >= 10
18#define __fallthrough __attribute__((fallthrough))
19#endif
20#endif
21
22#define TOOLCHAIN_CLANG_VERSION \
23 ((__clang_major__ * 10000) + (__clang_minor__ * 100) + \
24 __clang_patchlevel__)
25
26#define TOOLCHAIN_HAS_PRAGMA_DIAG 1
27
28#if TOOLCHAIN_CLANG_VERSION >= 30800
29#define TOOLCHAIN_HAS_C_GENERIC 1
30#define TOOLCHAIN_HAS_C_AUTO_TYPE 1
31#endif
32
34
35/* clear out common version. The build assert assert from gcc.h is defined to be empty */
36#undef BUILD_ASSERT
37
38#if defined(__cplusplus) && (__cplusplus >= 201103L)
39
40/* C++11 has static_assert built in */
41#define BUILD_ASSERT(EXPR, MSG...) static_assert(EXPR, "" MSG)
42
43#elif !defined(__cplusplus) && ((__STDC_VERSION__) >= 201100)
44
45/* C11 has static_assert built in */
46#define BUILD_ASSERT(EXPR, MSG...) _Static_assert((EXPR), "" MSG)
47
48#else
49
50/* Rely on that the C-library provides a static assertion function */
51#define BUILD_ASSERT(EXPR, MSG...) _Static_assert((EXPR), "" MSG)
52
53#endif
54
55#define TOOLCHAIN_WARNING_SIZEOF_ARRAY_DECAY "-Wsizeof-array-decay"
56#define TOOLCHAIN_WARNING_UNNEEDED_INTERNAL_DECLARATION "-Wunneeded-internal-declaration"
57#define TOOLCHAIN_WARNING_USED_BUT_MARKED_UNUSED "-Wused-but-marked-unused"
58#define TOOLCHAIN_WARNING_UNALIGNED_ACCESS "-Wunaligned-access"
59
60#define TOOLCHAIN_DISABLE_CLANG_WARNING(warning) _TOOLCHAIN_DISABLE_WARNING(clang, warning)
61#define TOOLCHAIN_ENABLE_CLANG_WARNING(warning) _TOOLCHAIN_ENABLE_WARNING(clang, warning)
62
63/*
64 * Provide these definitions only when minimal libc is used.
65 * Avoid collision with defines from include/zephyr/toolchain/zephyr_stdint.h
66 */
67#ifdef CONFIG_MINIMAL_LIBC
68
69/*
70 * Predefined __INTN_C/__UINTN_C macros are provided by clang starting in version 20.1.
71 * Avoid redefining these macros if a sufficiently modern clang is being used.
72 */
73#if TOOLCHAIN_CLANG_VERSION < 200100
74
75#define __int_c(v, suffix) v ## suffix
76#define int_c(v, suffix) __int_c(v, suffix)
77#define uint_c(v, suffix) __int_c(v ## U, suffix)
78
79#ifndef CONFIG_ENFORCE_ZEPHYR_STDINT
80
81#ifdef __INT64_TYPE__
82#undef __int_least64_c_suffix__
83#undef __int_least32_c_suffix__
84#undef __int_least16_c_suffix__
85#undef __int_least8_c_suffix__
86#ifdef __INT64_C_SUFFIX__
87#define __int_least64_c_suffix__ __INT64_C_SUFFIX__
88#define __int_least32_c_suffix__ __INT64_C_SUFFIX__
89#define __int_least16_c_suffix__ __INT64_C_SUFFIX__
90#define __int_least8_c_suffix__ __INT64_C_SUFFIX__
91#endif /* __INT64_C_SUFFIX__ */
92#endif /* __INT64_TYPE__ */
93
94#ifdef __INT_LEAST64_TYPE__
95#ifdef __int_least64_c_suffix__
96#define __INT64_C(x) int_c(x, __int_least64_c_suffix__)
97#define __UINT64_C(x) uint_c(x, __int_least64_c_suffix__)
98#else
99#define __INT64_C(x) x
100#define __UINT64_C(x) x ## U
101#endif /* __int_least64_c_suffix__ */
102#endif /* __INT_LEAST64_TYPE__ */
103
104#ifdef __INT32_TYPE__
105#undef __int_least32_c_suffix__
106#undef __int_least16_c_suffix__
107#undef __int_least8_c_suffix__
108#ifdef __INT32_C_SUFFIX__
109#define __int_least32_c_suffix__ __INT32_C_SUFFIX__
110#define __int_least16_c_suffix__ __INT32_C_SUFFIX__
111#define __int_least8_c_suffix__ __INT32_C_SUFFIX__
112#endif /* __INT32_C_SUFFIX__ */
113#endif /* __INT32_TYPE__ */
114
115#ifdef __INT_LEAST32_TYPE__
116#ifdef __int_least32_c_suffix__
117#define __INT32_C(x) int_c(x, __int_least32_c_suffix__)
118#define __UINT32_C(x) uint_c(x, __int_least32_c_suffix__)
119#else
120#define __INT32_C(x) x
121#define __UINT32_C(x) x ## U
122#endif /* __int_least32_c_suffix__ */
123#endif /* __INT_LEAST32_TYPE__ */
124
125#endif /* !CONFIG_ENFORCE_ZEPHYR_STDINT */
126
127#ifdef __INT16_TYPE__
128#undef __int_least16_c_suffix__
129#undef __int_least8_c_suffix__
130#ifdef __INT16_C_SUFFIX__
131#define __int_least16_c_suffix__ __INT16_C_SUFFIX__
132#define __int_least8_c_suffix__ __INT16_C_SUFFIX__
133#endif /* __INT16_C_SUFFIX__ */
134#endif /* __INT16_TYPE__ */
135
136#ifdef __INT_LEAST16_TYPE__
137#ifdef __int_least16_c_suffix__
138#define __INT16_C(x) int_c(x, __int_least16_c_suffix__)
139#define __UINT16_C(x) uint_c(x, __int_least16_c_suffix__)
140#else
141#define __INT16_C(x) x
142#define __UINT16_C(x) x ## U
143#endif /* __int_least16_c_suffix__ */
144#endif /* __INT_LEAST16_TYPE__ */
145
146#ifdef __INT8_TYPE__
147#undef __int_least8_c_suffix__
148#ifdef __INT8_C_SUFFIX__
149#define __int_least8_c_suffix__ __INT8_C_SUFFIX__
150#endif /* __INT8_C_SUFFIX__ */
151#endif /* __INT8_TYPE__ */
152
153#ifdef __INT_LEAST8_TYPE__
154#ifdef __int_least8_c_suffix__
155#define __INT8_C(x) int_c(x, __int_least8_c_suffix__)
156#define __UINT8_C(x) uint_c(x, __int_least8_c_suffix__)
157#else
158#define __INT8_C(x) x
159#define __UINT8_C(x) x ## U
160#endif /* __int_least8_c_suffix__ */
161#endif /* __INT_LEAST8_TYPE__ */
162
163#define __INTMAX_C(x) int_c(x, __INTMAX_C_SUFFIX__)
164#define __UINTMAX_C(x) int_c(x, __UINTMAX_C_SUFFIX__)
165
166#endif /* TOOLCHAIN_CLANG_VERSION < 200100 */
167
168#endif /* CONFIG_MINIMAL_LIBC */
169
170#endif /* ZEPHYR_INCLUDE_TOOLCHAIN_LLVM_H_ */
GCC toolchain abstraction.