projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 3e2ffd65 MT |
6 | /* Compiler specific definitions for Clang compiler */ |
| 7 | ||
| 565cbdc2 | 8 | #define uninitialized_var(x) x = *(&(x)) |
| b41c29b0 AB |
9 | |
| 10 | /* same as gcc, this was present in clang-2.6 so we can assume it works | |
| 11 | * with any version that can compile the kernel | |
| 12 | */ | |
| 13 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) | |
| 4ca59b14 | 14 | |
| 53a98ed7 PL |
15 | /* all clang versions usable with the kernel support KASAN ABI version 5 */ |
| 16 | #define KASAN_ABI_VERSION 5 | |
| 17 | ||
| 2bd926b4 | 18 | #if __has_feature(address_sanitizer) || __has_feature(hwaddress_sanitizer) |
| 5cbaefe9 | 19 | /* Emulate GCC's __SANITIZE_ADDRESS__ flag */ |
| 53a98ed7 | 20 | #define __SANITIZE_ADDRESS__ |
| 2bd926b4 AK |
21 | #define __no_sanitize_address \ |
| 22 | __attribute__((no_sanitize("address", "hwaddress"))) | |
| 23 | #else | |
| 24 | #define __no_sanitize_address | |
| 53a98ed7 | 25 | #endif |
| 87358710 | 26 | |
| dfd402a4 ME |
27 | #if __has_feature(thread_sanitizer) |
| 28 | /* emulate gcc's __SANITIZE_THREAD__ flag */ | |
| 29 | #define __SANITIZE_THREAD__ | |
| 30 | #define __no_sanitize_thread \ | |
| 31 | __attribute__((no_sanitize("thread"))) | |
| 32 | #else | |
| 33 | #define __no_sanitize_thread | |
| 34 | #endif | |
| 35 | ||
| f0907827 RV |
36 | /* |
| 37 | * Not all versions of clang implement the the type-generic versions | |
| 38 | * of the builtin overflow checkers. Fortunately, clang implements | |
| 39 | * __has_builtin allowing us to avoid awkward version | |
| 40 | * checks. Unfortunately, we don't know which version of gcc clang | |
| 41 | * pretends to be, so the macro may or may not be defined. | |
| 42 | */ | |
| f0907827 RV |
43 | #if __has_builtin(__builtin_mul_overflow) && \ |
| 44 | __has_builtin(__builtin_add_overflow) && \ | |
| 45 | __has_builtin(__builtin_sub_overflow) | |
| 46 | #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 | |
| 47 | #endif | |
| 815f0ddb ND |
48 | |
| 49 | /* The following are for compatibility with GCC, from compiler-gcc.h, | |
| 50 | * and may be redefined here because they should not be shared with other | |
| 51 | * compilers, like ICC. | |
| 52 | */ | |
| 53 | #define barrier() __asm__ __volatile__("" : : : "memory") | |
| d08b9f0c ST |
54 | |
| 55 | #if __has_feature(shadow_call_stack) | |
| 56 | # define __noscs __attribute__((__no_sanitize__("shadow-call-stack"))) | |
| 57 | #endif |