projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 95857638 | 1 | /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ |
| 1da177e4 LT |
2 | /****************************************************************************** |
| 3 | * | |
| 4 | * Name: acgcc.h - GCC specific defines, etc. | |
| 5 | * | |
| 4441e55d | 6 | * Copyright (C) 2000 - 2021, Intel Corp. |
| 1da177e4 | 7 | * |
| 95857638 | 8 | *****************************************************************************/ |
| 1da177e4 LT |
9 | |
| 10 | #ifndef __ACGCC_H__ | |
| 11 | #define __ACGCC_H__ | |
| 12 | ||
| 5fb3ab84 LZ |
13 | /* |
| 14 | * Use compiler specific <stdarg.h> is a good practice for even when | |
| 15 | * -nostdinc is specified (i.e., ACPI_USE_STANDARD_HEADERS undefined. | |
| 16 | */ | |
| 84676b87 LZ |
17 | #ifndef va_arg |
| 18 | #ifdef ACPI_USE_BUILTIN_STDARG | |
| 19 | typedef __builtin_va_list va_list; | |
| 20 | #define va_start(v, l) __builtin_va_start(v, l) | |
| 21 | #define va_end(v) __builtin_va_end(v) | |
| 22 | #define va_arg(v, l) __builtin_va_arg(v, l) | |
| 23 | #define va_copy(d, s) __builtin_va_copy(d, s) | |
| 24 | #else | |
| c0891ac1 | 25 | #include <linux/stdarg.h> |
| 84676b87 LZ |
26 | #endif |
| 27 | #endif | |
| 5fb3ab84 | 28 | |
| 8f40f171 LM |
29 | #define ACPI_INLINE __inline__ |
| 30 | ||
| f9f4601f RM |
31 | /* Function name is used for debug output. Non-ANSI, compiler-dependent */ |
| 32 | ||
| d5c003b4 | 33 | #define ACPI_GET_FUNCTION_NAME __func__ |
| f9f4601f | 34 | |
| b8e4d893 BM |
35 | /* |
| 36 | * This macro is used to tag functions as "printf-like" because | |
| 1da177e4 LT |
37 | * some compilers (like GCC) can catch printf format string problems. |
| 38 | */ | |
| b8e4d893 | 39 | #define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1))) |
| 1da177e4 | 40 | |
| b8e4d893 BM |
41 | /* |
| 42 | * Some compilers complain about unused variables. Sometimes we don't want to | |
| f9f4601f | 43 | * use all the variables (for example, _acpi_module_name). This allows us |
| fd589a8f | 44 | * to tell the compiler warning in a per-variable manner that a variable |
| 1da177e4 LT |
45 | * is unused. |
| 46 | */ | |
| 47 | #define ACPI_UNUSED_VAR __attribute__ ((unused)) | |
| 48 | ||
| 7b09d8fd LZ |
49 | /* GCC supports __VA_ARGS__ in macros */ |
| 50 | ||
| 51 | #define COMPILER_VA_MACRO 1 | |
| 52 | ||
| 65082bfc LZ |
53 | /* GCC supports native multiply/shift on 32-bit platforms */ |
| 54 | ||
| 55 | #define ACPI_USE_NATIVE_MATH64 | |
| 56 | ||
| c1a7c2ce ND |
57 | /* GCC did not support __has_attribute until 5.1. */ |
| 58 | ||
| 59 | #ifndef __has_attribute | |
| 60 | #define __has_attribute(x) 0 | |
| 61 | #endif | |
| 62 | ||
| 63 | /* | |
| e527db8f | 64 | * Explicitly mark intentional explicit fallthrough to silence |
| c1a7c2ce ND |
65 | * -Wimplicit-fallthrough in GCC 7.1+. |
| 66 | */ | |
| 67 | ||
| 68 | #if __has_attribute(__fallthrough__) | |
| 69 | #define ACPI_FALLTHROUGH __attribute__((__fallthrough__)) | |
| 70 | #endif | |
| 71 | ||
| 4be44fcd | 72 | #endif /* __ACGCC_H__ */ |