acpi/platform/acgcc.h

0001 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
0002 /******************************************************************************
0003  *
0004  * Name: acgcc.h - GCC specific defines, etc.
0005  *
0006  * Copyright (C) 2000 - 2022, Intel Corp.
0007  *
0008  *****************************************************************************/
0009
0010 #ifndef __ACGCC_H__
0011 #define __ACGCC_H__
0012
0013 #ifndef va_arg
0014 #ifdef __KERNEL__
0015 #include <linux/stdarg.h>
0016 #else
0017 #include <stdarg.h>
0018 #endif /* __KERNEL__ */
0019 #endif /* ! va_arg */
0020
0021 #define ACPI_INLINE             __inline__
0022
0023 /* Function name is used for debug output. Non-ANSI, compiler-dependent */
0024
0025 #define ACPI_GET_FUNCTION_NAME          __func__
0026
0027 /*
0028  * This macro is used to tag functions as "printf-like" because
0029  * some compilers (like GCC) can catch printf format string problems.
0030  */
0031 #define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1)))
0032
0033 /*
0034  * Some compilers complain about unused variables. Sometimes we don't want to
0035  * use all the variables (for example, _acpi_module_name). This allows us
0036  * to tell the compiler warning in a per-variable manner that a variable
0037  * is unused.
0038  */
0039 #define ACPI_UNUSED_VAR __attribute__ ((unused))
0040
0041 /* GCC supports __VA_ARGS__ in macros */
0042
0043 #define COMPILER_VA_MACRO               1
0044
0045 /* GCC supports native multiply/shift on 32-bit platforms */
0046
0047 #define ACPI_USE_NATIVE_MATH64
0048
0049 /* GCC did not support __has_attribute until 5.1. */
0050
0051 #ifndef __has_attribute
0052 #define __has_attribute(x) 0
0053 #endif
0054
0055 /*
0056  * Explicitly mark intentional explicit fallthrough to silence
0057  * -Wimplicit-fallthrough in GCC 7.1+.
0058  */
0059
0060 #if __has_attribute(__fallthrough__)
0061 #define ACPI_FALLTHROUGH __attribute__((__fallthrough__))
0062 #endif
0063
0064 #endif              /* __ACGCC_H__ */