| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _TOOLS_LINUX_COMPILER_H_ |
| #error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead." |
| #endif |
| |
| /* |
| * Common definitions for all gcc versions go here. |
| */ |
| #define GCC_VERSION (__GNUC__ * 10000 \ |
| + __GNUC_MINOR__ * 100 \ |
| + __GNUC_PATCHLEVEL__) |
| |
| #if GCC_VERSION >= 70000 && !defined(__CHECKER__) |
| # define __fallthrough __attribute__ ((fallthrough)) |
| #endif |
| |
| #if GCC_VERSION >= 40300 |
| # define __compiletime_error(message) __attribute__((error(message))) |
| #endif /* GCC_VERSION >= 40300 */ |
| |
| /* &a[0] degrades to a pointer: a different type from an array */ |
| #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) |
| |
| #ifndef __pure |
| #define __pure __attribute__((pure)) |
| #endif |
| #define noinline __attribute__((noinline)) |
| #ifndef __packed |
| #define __packed __attribute__((packed)) |
| #endif |
| #ifndef __noreturn |
| #define __noreturn __attribute__((noreturn)) |
| #endif |
| #ifndef __aligned |
| #define __aligned(x) __attribute__((aligned(x))) |
| #endif |
| #define __printf(a, b) __attribute__((format(printf, a, b))) |
| #define __scanf(a, b) __attribute__((format(scanf, a, b))) |
| |
| #if GCC_VERSION >= 50100 |
| #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 |
| #endif |