Zephyr API Documentation 4.4.0-rc1
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
56#define TOOLCHAIN_WARNING_SIZEOF_ARRAY_DECAY "-Wsizeof-array-decay"
57#define TOOLCHAIN_WARNING_UNNEEDED_INTERNAL_DECLARATION "-Wunneeded-internal-declaration"
58#define TOOLCHAIN_WARNING_USED_BUT_MARKED_UNUSED "-Wused-but-marked-unused"
59#define TOOLCHAIN_WARNING_UNALIGNED_ACCESS "-Wunaligned-access"
60#define TOOLCHAIN_WARNING_ARM_INTERRUPT_VFP_CLOBBER "-Warm-interrupt-vfp-clobber"
62
63#define TOOLCHAIN_DISABLE_CLANG_WARNING(warning) _TOOLCHAIN_DISABLE_WARNING(clang, warning)
64#define TOOLCHAIN_ENABLE_CLANG_WARNING(warning) _TOOLCHAIN_ENABLE_WARNING(clang, warning)
65
66/*
67 * Provide these definitions only when minimal libc is used.
68 * Avoid collision with defines from include/zephyr/toolchain/zephyr_stdint.h
69 */
70#ifdef CONFIG_MINIMAL_LIBC
71
72/*
73 * Predefined __INTN_C/__UINTN_C macros are provided by clang starting in version 20.1.
74 * Avoid redefining these macros if a sufficiently modern clang is being used.
75 */
76#if TOOLCHAIN_CLANG_VERSION < 200100
77
78#define __int_c(v, suffix) v ## suffix
79#define int_c(v, suffix) __int_c(v, suffix)
80#define uint_c(v, suffix) __int_c(v ## U, suffix)
81
82#ifndef CONFIG_ENFORCE_ZEPHYR_STDINT
83
84#ifdef __INT64_TYPE__
85#undef __int_least64_c_suffix__
86#undef __int_least32_c_suffix__
87#undef __int_least16_c_suffix__
88#undef __int_least8_c_suffix__
89#ifdef __INT64_C_SUFFIX__
90#define __int_least64_c_suffix__ __INT64_C_SUFFIX__
91#define __int_least32_c_suffix__ __INT64_C_SUFFIX__
92#define __int_least16_c_suffix__ __INT64_C_SUFFIX__
93#define __int_least8_c_suffix__ __INT64_C_SUFFIX__
94#endif /* __INT64_C_SUFFIX__ */
95#endif /* __INT64_TYPE__ */
96
97#ifdef __INT_LEAST64_TYPE__
98#ifdef __int_least64_c_suffix__
99#define __INT64_C(x) int_c(x, __int_least64_c_suffix__)
100#define __UINT64_C(x) uint_c(x, __int_least64_c_suffix__)
101#else
102#define __INT64_C(x) x
103#define __UINT64_C(x) x ## U
104#endif /* __int_least64_c_suffix__ */
105#endif /* __INT_LEAST64_TYPE__ */
106
107#ifdef __INT32_TYPE__
108#undef __int_least32_c_suffix__
109#undef __int_least16_c_suffix__
110#undef __int_least8_c_suffix__
111#ifdef __INT32_C_SUFFIX__
112#define __int_least32_c_suffix__ __INT32_C_SUFFIX__
113#define __int_least16_c_suffix__ __INT32_C_SUFFIX__
114#define __int_least8_c_suffix__ __INT32_C_SUFFIX__
115#endif /* __INT32_C_SUFFIX__ */
116#endif /* __INT32_TYPE__ */
117
118#ifdef __INT_LEAST32_TYPE__
119#ifdef __int_least32_c_suffix__
120#define __INT32_C(x) int_c(x, __int_least32_c_suffix__)
121#define __UINT32_C(x) uint_c(x, __int_least32_c_suffix__)
122#else
123#define __INT32_C(x) x
124#define __UINT32_C(x) x ## U
125#endif /* __int_least32_c_suffix__ */
126#endif /* __INT_LEAST32_TYPE__ */
127
128#endif /* !CONFIG_ENFORCE_ZEPHYR_STDINT */
129
130#ifdef __INT16_TYPE__
131#undef __int_least16_c_suffix__
132#undef __int_least8_c_suffix__
133#ifdef __INT16_C_SUFFIX__
134#define __int_least16_c_suffix__ __INT16_C_SUFFIX__
135#define __int_least8_c_suffix__ __INT16_C_SUFFIX__
136#endif /* __INT16_C_SUFFIX__ */
137#endif /* __INT16_TYPE__ */
138
139#ifdef __INT_LEAST16_TYPE__
140#ifdef __int_least16_c_suffix__
141#define __INT16_C(x) int_c(x, __int_least16_c_suffix__)
142#define __UINT16_C(x) uint_c(x, __int_least16_c_suffix__)
143#else
144#define __INT16_C(x) x
145#define __UINT16_C(x) x ## U
146#endif /* __int_least16_c_suffix__ */
147#endif /* __INT_LEAST16_TYPE__ */
148
149#ifdef __INT8_TYPE__
150#undef __int_least8_c_suffix__
151#ifdef __INT8_C_SUFFIX__
152#define __int_least8_c_suffix__ __INT8_C_SUFFIX__
153#endif /* __INT8_C_SUFFIX__ */
154#endif /* __INT8_TYPE__ */
155
156#ifdef __INT_LEAST8_TYPE__
157#ifdef __int_least8_c_suffix__
158#define __INT8_C(x) int_c(x, __int_least8_c_suffix__)
159#define __UINT8_C(x) uint_c(x, __int_least8_c_suffix__)
160#else
161#define __INT8_C(x) x
162#define __UINT8_C(x) x ## U
163#endif /* __int_least8_c_suffix__ */
164#endif /* __INT_LEAST8_TYPE__ */
165
166#define __INTMAX_C(x) int_c(x, __INTMAX_C_SUFFIX__)
167#define __UINTMAX_C(x) int_c(x, __UINTMAX_C_SUFFIX__)
168
169#endif /* TOOLCHAIN_CLANG_VERSION < 200100 */
170
171#endif /* CONFIG_MINIMAL_LIBC */
172
173#endif /* ZEPHYR_INCLUDE_TOOLCHAIN_LLVM_H_ */
GCC toolchain abstraction.