| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _TOOLS_LINUX_COMPILER_H_ |
| 3 | #error "Please do not include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead." |
| 4 | #endif |
| 5 | |
| 6 | /* |
| 7 | * Common definitions for all gcc versions go here. |
| 8 | */ |
| 9 | #ifndef GCC_VERSION |
| 10 | #define GCC_VERSION (__GNUC__ * 10000 \ |
| 11 | + __GNUC_MINOR__ * 100 \ |
| 12 | + __GNUC_PATCHLEVEL__) |
| 13 | #endif |
| 14 | |
| 15 | #if __has_attribute(__fallthrough__) |
| 16 | # define fallthrough __attribute__((__fallthrough__)) |
| 17 | #else |
| 18 | # define fallthrough do {} while (0) /* fallthrough */ |
| 19 | #endif |
| 20 | |
| 21 | #if __has_attribute(__error__) |
| 22 | # define __compiletime_error(message) __attribute__((error(message))) |
| 23 | #endif |
| 24 | |
| 25 | /* &a[0] degrades to a pointer: a different type from an array */ |
| 26 | #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) |
| 27 | |
| 28 | #ifndef __pure |
| 29 | #define __pure __attribute__((pure)) |
| 30 | #endif |
| 31 | #define noinline __attribute__((noinline)) |
| 32 | #ifndef __packed |
| 33 | #define __packed __attribute__((packed)) |
| 34 | #endif |
| 35 | #ifndef __noreturn |
| 36 | #define __noreturn __attribute__((noreturn)) |
| 37 | #endif |
| 38 | #ifndef __aligned |
| 39 | #define __aligned(x) __attribute__((aligned(x))) |
| 40 | #endif |
| 41 | #define __printf(a, b) __attribute__((format(printf, a, b))) |
| 42 | #define __scanf(a, b) __attribute__((format(scanf, a, b))) |
| 43 | |