/* 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

#include <linux/compiler-context-analysis.h>

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

#ifndef asm_goto_output
#define asm_goto_output(x...) asm goto(x)
#endif

/*
 * __unqual_scalar_typeof(x) - Declare an unqualified scalar type, leaving
 *                             non-scalar types unchanged.
 */
/*
 * Prefer C11 _Generic for better compile-times and simpler code. Note: 'char'
 * is not type-compatible with 'signed char', and we define a separate case.
 */
#define __scalar_type_to_expr_cases(type)                               \
                unsigned type:  (unsigned type)0,                       \
                signed type:    (signed type)0

#define __unqual_scalar_typeof(x) typeof(                               \
                _Generic((x),                                           \
                         char:  (char)0,                                \
                         __scalar_type_to_expr_cases(char),             \
                         __scalar_type_to_expr_cases(short),            \
                         __scalar_type_to_expr_cases(int),              \
                         __scalar_type_to_expr_cases(long),             \
                         __scalar_type_to_expr_cases(long long),        \
                         default: (x)))

#endif /* __LINUX_COMPILER_TYPES_H */