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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
d1515582 | 2 | #ifndef __LINUX_COMPILER_TYPES_H |
565cbdc2 MC |
3 | #error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead." |
4 | #endif | |
5 | ||
6 | /* Some compiler specific definitions are overwritten here | |
7 | * for Clang compiler | |
8 | */ | |
9 | ||
10 | #ifdef uninitialized_var | |
11 | #undef uninitialized_var | |
12 | #define uninitialized_var(x) x = *(&(x)) | |
13 | #endif | |
b41c29b0 AB |
14 | |
15 | /* same as gcc, this was present in clang-2.6 so we can assume it works | |
16 | * with any version that can compile the kernel | |
17 | */ | |
18 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) | |
4ca59b14 | 19 | |
a4fce118 AK |
20 | #undef __no_sanitize_address |
21 | #define __no_sanitize_address __attribute__((no_sanitize("address"))) | |
22 | ||
79a1bd31 DW |
23 | /* Clang doesn't have a way to turn it off per-function, yet. */ |
24 | #ifdef __noretpoline | |
25 | #undef __noretpoline | |
26 | #endif | |
a8b18c24 RV |
27 | |
28 | /* | |
29 | * Not all versions of clang implement the the type-generic versions | |
30 | * of the builtin overflow checkers. Fortunately, clang implements | |
31 | * __has_builtin allowing us to avoid awkward version | |
32 | * checks. Unfortunately, we don't know which version of gcc clang | |
33 | * pretends to be, so the macro may or may not be defined. | |
34 | */ | |
35 | #undef COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW | |
36 | #if __has_builtin(__builtin_mul_overflow) && \ | |
37 | __has_builtin(__builtin_add_overflow) && \ | |
38 | __has_builtin(__builtin_sub_overflow) | |
39 | #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 | |
40 | #endif |