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63 lines
2.0 KiB
63 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __LINUX_COMPILER_TYPES_H |
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#error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead." |
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#endif |
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/* Compiler specific definitions for Clang compiler */ |
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/* same as gcc, this was present in clang-2.6 so we can assume it works |
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* with any version that can compile the kernel |
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*/ |
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#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) |
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/* all clang versions usable with the kernel support KASAN ABI version 5 */ |
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#define KASAN_ABI_VERSION 5 |
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#if __has_feature(address_sanitizer) || __has_feature(hwaddress_sanitizer) |
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/* Emulate GCC's __SANITIZE_ADDRESS__ flag */ |
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#define __SANITIZE_ADDRESS__ |
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#define __no_sanitize_address \ |
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__attribute__((no_sanitize("address", "hwaddress"))) |
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#else |
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#define __no_sanitize_address |
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#endif |
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#if __has_feature(thread_sanitizer) |
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/* emulate gcc's __SANITIZE_THREAD__ flag */ |
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#define __SANITIZE_THREAD__ |
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#define __no_sanitize_thread \ |
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__attribute__((no_sanitize("thread"))) |
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#else |
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#define __no_sanitize_thread |
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#endif |
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#if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) |
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#define __HAVE_BUILTIN_BSWAP32__ |
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#define __HAVE_BUILTIN_BSWAP64__ |
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#define __HAVE_BUILTIN_BSWAP16__ |
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#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */ |
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#if __has_feature(undefined_behavior_sanitizer) |
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/* GCC does not have __SANITIZE_UNDEFINED__ */ |
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#define __no_sanitize_undefined \ |
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__attribute__((no_sanitize("undefined"))) |
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#else |
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#define __no_sanitize_undefined |
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#endif |
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/* |
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* Not all versions of clang implement the type-generic versions |
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* of the builtin overflow checkers. Fortunately, clang implements |
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* __has_builtin allowing us to avoid awkward version |
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* checks. Unfortunately, we don't know which version of gcc clang |
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* pretends to be, so the macro may or may not be defined. |
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*/ |
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#if __has_builtin(__builtin_mul_overflow) && \ |
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__has_builtin(__builtin_add_overflow) && \ |
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__has_builtin(__builtin_sub_overflow) |
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#define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 |
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#endif |
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#if __has_feature(shadow_call_stack) |
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# define __noscs __attribute__((__no_sanitize__("shadow-call-stack"))) |
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#endif
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