1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
2 /******************************************************************************
3  *
4  * Name: acgcc.h - GCC specific defines, etc.
5  *
6  * Copyright (C) 2000 - 2022, Intel Corp.
7  *
8  *****************************************************************************/
9 
10 #ifndef __ACGCC_H__
11 #define __ACGCC_H__
12 
13 #ifndef va_arg
14 #ifdef __KERNEL__
15 #include <linux/stdarg.h>
16 #else
17 #include <stdarg.h>
18 #endif /* __KERNEL__ */
19 #endif /* ! va_arg */
20 
21 #define ACPI_INLINE             __inline__
22 
23 /* Function name is used for debug output. Non-ANSI, compiler-dependent */
24 
25 #define ACPI_GET_FUNCTION_NAME          __func__
26 
27 /*
28  * This macro is used to tag functions as "printf-like" because
29  * some compilers (like GCC) can catch printf format string problems.
30  */
31 #define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1)))
32 
33 /*
34  * Some compilers complain about unused variables. Sometimes we don't want to
35  * use all the variables (for example, _acpi_module_name). This allows us
36  * to tell the compiler warning in a per-variable manner that a variable
37  * is unused.
38  */
39 #define ACPI_UNUSED_VAR __attribute__ ((unused))
40 
41 /* GCC supports __VA_ARGS__ in macros */
42 
43 #define COMPILER_VA_MACRO               1
44 
45 /* GCC supports native multiply/shift on 32-bit platforms */
46 
47 #define ACPI_USE_NATIVE_MATH64
48 
49 /* GCC did not support __has_attribute until 5.1. */
50 
51 #ifndef __has_attribute
52 #define __has_attribute(x) 0
53 #endif
54 
55 /*
56  * Explicitly mark intentional explicit fallthrough to silence
57  * -Wimplicit-fallthrough in GCC 7.1+.
58  */
59 
60 #if __has_attribute(__fallthrough__)
61 #define ACPI_FALLTHROUGH __attribute__((__fallthrough__))
62 #endif
63 
64 #endif				/* __ACGCC_H__ */
65