84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
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/******************************************************************************
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*
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* Name: acgcc.h - GCC specific defines, etc.
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*
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* Copyright (C) 2000 - 2023, Intel Corp.
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*
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*****************************************************************************/
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#ifndef __ACGCC_H__
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#define __ACGCC_H__
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/*
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* Use compiler specific <stdarg.h> is a good practice for even when
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* -nostdinc is specified (i.e., ACPI_USE_STANDARD_HEADERS undefined.
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*/
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#ifndef va_arg
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#ifdef ACPI_USE_BUILTIN_STDARG
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typedef __builtin_va_list va_list;
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#define va_start(v, l) __builtin_va_start(v, l)
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#define va_end(v) __builtin_va_end(v)
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#define va_arg(v, l) __builtin_va_arg(v, l)
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#define va_copy(d, s) __builtin_va_copy(d, s)
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#else
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#include <stdarg.h>
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#endif
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#endif
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#define ACPI_INLINE __inline__
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/* Function name is used for debug output. Non-ANSI, compiler-dependent */
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#define ACPI_GET_FUNCTION_NAME __func__
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/*
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* This macro is used to tag functions as "printf-like" because
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* some compilers (like GCC) can catch printf format string problems.
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*/
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#define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1)))
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/*
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* Some compilers complain about unused variables. Sometimes we don't want to
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* use all the variables (for example, _acpi_module_name). This allows us
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* to tell the compiler warning in a per-variable manner that a variable
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* is unused.
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*/
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#define ACPI_UNUSED_VAR __attribute__ ((unused))
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/* GCC supports __VA_ARGS__ in macros */
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#define COMPILER_VA_MACRO 1
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/* GCC supports native multiply/shift on 32-bit platforms */
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#define ACPI_USE_NATIVE_MATH64
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/* GCC did not support __has_attribute until 5.1. */
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#ifndef __has_attribute
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#define __has_attribute(x) 0
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#endif
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/*
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* Explicitly mark intentional explicit fallthrough to silence
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* -Wimplicit-fallthrough in GCC 7.1+.
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*/
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#if __has_attribute(__fallthrough__)
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#define ACPI_FALLTHROUGH __attribute__((__fallthrough__))
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#endif
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/*
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* Flexible array members are not allowed to be part of a union under
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* C99, but this is not for any technical reason. Work around the
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* limitation.
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*/
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#define ACPI_FLEX_ARRAY(TYPE, NAME) \
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struct { \
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struct { } __Empty_ ## NAME; \
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TYPE NAME[]; \
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}
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#endif /* __ACGCC_H__ */
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