diff options
Diffstat (limited to 'roms/u-boot/include/linux/compiler-clang.h')
-rw-r--r-- | roms/u-boot/include/linux/compiler-clang.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/roms/u-boot/include/linux/compiler-clang.h b/roms/u-boot/include/linux/compiler-clang.h new file mode 100644 index 000000000..333a6695a --- /dev/null +++ b/roms/u-boot/include/linux/compiler-clang.h @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_COMPILER_TYPES_H +#error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead." +#endif + +/* Compiler specific definitions for Clang compiler */ + +#define uninitialized_var(x) x = *(&(x)) + +/* same as gcc, this was present in clang-2.6 so we can assume it works + * with any version that can compile the kernel + */ +#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) + +/* all clang versions usable with the kernel support KASAN ABI version 5 */ +#define KASAN_ABI_VERSION 5 + +#if __has_feature(address_sanitizer) || __has_feature(hwaddress_sanitizer) +/* emulate gcc's __SANITIZE_ADDRESS__ flag */ +#define __SANITIZE_ADDRESS__ +#define __no_sanitize_address \ + __attribute__((no_sanitize("address", "hwaddress"))) +#else +#define __no_sanitize_address +#endif + +/* + * Not all versions of clang implement the the type-generic versions + * of the builtin overflow checkers. Fortunately, clang implements + * __has_builtin allowing us to avoid awkward version + * checks. Unfortunately, we don't know which version of gcc clang + * pretends to be, so the macro may or may not be defined. + */ +#if __has_builtin(__builtin_mul_overflow) && \ + __has_builtin(__builtin_add_overflow) && \ + __has_builtin(__builtin_sub_overflow) +#define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 +#endif + +/* The following are for compatibility with GCC, from compiler-gcc.h, + * and may be redefined here because they should not be shared with other + * compilers, like ICC. + */ +#define barrier() __asm__ __volatile__("" : : : "memory") |