tools/include/linux/compiler_types.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_COMPILER_TYPES_H
#define __LINUX_COMPILER_TYPES_H

/* Builtins */

/*
 * __has_builtin is supported on gcc >= 10, clang >= 3 and icc >= 21.
 * In the meantime, to support gcc < 10, we implement __has_builtin
 * by hand.
 */
#ifndef __has_builtin
#define __has_builtin(x) (0)
#endif

#ifdef __CHECKER__
/* context/locking */
# define __must_hold(x)	__attribute__((context(x,1,1)))
# define __acquires(x)	__attribute__((context(x,0,1)))
# define __releases(x)	__attribute__((context(x,1,0)))
# define __acquire(x)	__context__(x,1)
# define __release(x)	__context__(x,-1)
# define __cond_lock(x,c)	((c) ? ({ __acquire(x); 1; }) : 0)
#else /* __CHECKER__ */
/* context/locking */
# define __must_hold(x)
# define __acquires(x)
# define __releases(x)
# define __acquire(x)	(void)0
# define __release(x)	(void)0
# define __cond_lock(x,c) (c)
#endif /* __CHECKER__ */

/* Compiler specific macros. */
#ifdef __GNUC__
#include <linux/compiler-gcc.h>
#endif

#endif /* __LINUX_COMPILER_TYPES_H */