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/* Copyright 2020 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef __CROS_EC_COMPILER_H
#define __CROS_EC_COMPILER_H
/*
* See https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
*/
#ifndef CONFIG_ZEPHYR
/* If building with Zephyr, use its GCC version. */
#define GCC_VERSION \
(__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#endif /* !CONFIG_ZEPHYR */
/*
* The EC codebase assumes that typeof() is available but it is not in Zephyr.
* We use an #ifdef since arch/arm/include/aarch32/cortex_m/cmse.h defines this
* macro.
*/
#ifndef typeof
#define typeof(x) __typeof__(x)
#endif
/**
* ISO C forbids forward references to enum types, but gcc allows it as long as
* the "-pedantic" flag is not used.
*
* In C++11 and newer, forward references to enums are only allowed if the
* underlying type is specified.
*
* New uses of this macro are strongly discouraged; instead of forward
* declaring the enum, provide the definition.
*
* TODO(http://b/187105190): Remove uses of this macro.
*/
#ifdef __cplusplus
#define FORWARD_DECLARE_ENUM(x) enum x : int
#else
#define FORWARD_DECLARE_ENUM(x) enum x
#endif /* __cplusplus */
#define _DO_PRAGMA(x) _Pragma(#x)
#define _DISABLE_COMPILER_WARNING(compiler, warning) \
_DO_PRAGMA(compiler diagnostic push) \
_DO_PRAGMA(compiler diagnostic ignored warning)
#define _ENABLE_COMPILER_WARNING(compiler, warning) \
_DO_PRAGMA(compiler diagnostic pop)
/**
* Disable the specified compiler warning for both clang and gcc.
*/
#define DISABLE_COMPILER_WARNING(warning) \
_DISABLE_COMPILER_WARNING(GCC, warning)
/**
* Re-enable the specified compiler warning for both clang and gcc. Can only be
* used after a call to DISABLE_COMPILER_WARNING.
*/
#define ENABLE_COMPILER_WARNING(warning) _ENABLE_COMPILER_WARNING(GCC, warning)
#ifdef __clang__
/**
* Disable the specified compiler warning for clang.
*/
#define DISABLE_CLANG_WARNING(warning) _DISABLE_COMPILER_WARNING(clang, warning)
/**
* Re-enable the specified compiler warning for clang. Can only be used after
* a call to DISABLE_CLANG_WARNING.
*/
#define ENABLE_CLANG_WARNING(warning) _ENABLE_COMPILER_WARNING(clang, warning)
#else
#define DISABLE_CLANG_WARNING(warning)
#define ENABLE_CLANG_WARNING(warning)
#endif
#if defined(__GNUC__) && !defined(__clang__)
/**
* Disable the specified compiler warning for gcc.
*/
#define DISABLE_GCC_WARNING(warning) _DISABLE_COMPILER_WARNING(GCC, warning)
/**
* Re-enable the specified compiler warning for clang. Can only be used after
* a call to DISABLE_GCC_WARNING.
*/
#define ENABLE_GCC_WARNING(warning) _ENABLE_COMPILER_WARNING(GCC, warning)
#else
#define DISABLE_GCC_WARNING(warning)
#define ENABLE_GCC_WARNING(warning)
#endif
#endif /* __CROS_EC_COMPILER_H */
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