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/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/******************************************************************************
*
* Name: acgcc.h - GCC specific defines, etc.
*
* Copyright (C) 2000 - 2021, Intel Corp.
*
*****************************************************************************/
#ifndef __ACGCC_H__
#define __ACGCC_H__
/*
* Use compiler specific <stdarg.h> is a good practice for even when
* -nostdinc is specified (i.e., ACPI_USE_STANDARD_HEADERS undefined.
*/
#ifndef va_arg
#ifdef ACPI_USE_BUILTIN_STDARG
typedef __builtin_va_list va_list;
#define va_start(v, l) __builtin_va_start(v, l)
#define va_end(v) __builtin_va_end(v)
#define va_arg(v, l) __builtin_va_arg(v, l)
#define va_copy(d, s) __builtin_va_copy(d, s)
#else
#ifdef __KERNEL__
#include <linux/stdarg.h>
#else
/* Used to build acpi tools */
#include <stdarg.h>
#endif /* __KERNEL__ */
#endif /* ACPI_USE_BUILTIN_STDARG */
#endif /* ! va_arg */
#define ACPI_INLINE __inline__
/* Function name is used for debug output. Non-ANSI, compiler-dependent */
#define ACPI_GET_FUNCTION_NAME __func__
/*
* This macro is used to tag functions as "printf-like" because
* some compilers (like GCC) can catch printf format string problems.
*/
#define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1)))
/*
* Some compilers complain about unused variables. Sometimes we don't want to
* use all the variables (for example, _acpi_module_name). This allows us
* to tell the compiler warning in a per-variable manner that a variable
* is unused.
*/
#define ACPI_UNUSED_VAR __attribute__ ((unused))
/* GCC supports __VA_ARGS__ in macros */
#define COMPILER_VA_MACRO 1
/* GCC supports native multiply/shift on 32-bit platforms */
#define ACPI_USE_NATIVE_MATH64
/* GCC did not support __has_attribute until 5.1. */
#ifndef __has_attribute
#define __has_attribute(x) 0
#endif
/*
* Explicitly mark intentional explicit fallthrough to silence
* -Wimplicit-fallthrough in GCC 7.1+.
*/
#if __has_attribute(__fallthrough__)
#define ACPI_FALLTHROUGH __attribute__((__fallthrough__))
#endif
#endif /* __ACGCC_H__ */
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