1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _TOOLS_LINUX_COMPILER_H_ |
3 | #error "Please don't 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 | |