CasperSecurity
/* 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 */
/*
* Clang prior to 17 is being silly and considers many __cleanup() variables
* as unused (because they are, their sole purpose is to go out of scope).
*
* https://reviews.llvm.org/D152180
*/
#undef __cleanup
#define __cleanup(func) __maybe_unused __attribute__((__cleanup__(func)))
/* 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
/*
* Clang 22 added preprocessor macros to match GCC, in hopes of eventually
* dropping __has_feature support for sanitizers:
* https://github.com/llvm/llvm-project/commit/568c23bbd3303518c5056d7f03444dae4fdc8a9c
* Create these macros for older versions of clang so that it is easy to clean
* up once the minimum supported version of LLVM for building the kernel always
* creates these macros.
*
* Note: Checking __has_feature(*_sanitizer) is only true if the feature is
* enabled. Therefore it is not required to additionally check defined(CONFIG_*)
* to avoid adding redundant attributes in other configurations.
*/
#if __has_feature(address_sanitizer) && !defined(__SANITIZE_ADDRESS__)
#define __SANITIZE_ADDRESS__
#endif
#if __has_feature(hwaddress_sanitizer) && !defined(__SANITIZE_HWADDRESS__)
#define __SANITIZE_HWADDRESS__
#endif
#if __has_feature(thread_sanitizer) && !defined(__SANITIZE_THREAD__)
#define __SANITIZE_THREAD__
#endif
/*
* Treat __SANITIZE_HWADDRESS__ the same as __SANITIZE_ADDRESS__ in the kernel.
*/
#ifdef __SANITIZE_HWADDRESS__
#define __SANITIZE_ADDRESS__
#endif
#ifdef __SANITIZE_ADDRESS__
#define __no_sanitize_address \
__attribute__((no_sanitize("address", "hwaddress")))
#else
#define __no_sanitize_address
#endif
#ifdef __SANITIZE_THREAD__
#define __no_sanitize_thread \
__attribute__((no_sanitize("thread")))
#else
#define __no_sanitize_thread
#endif
#if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP)
#define __HAVE_BUILTIN_BSWAP32__
#define __HAVE_BUILTIN_BSWAP64__
#define __HAVE_BUILTIN_BSWAP16__
#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
#if __has_feature(undefined_behavior_sanitizer)
/* GCC does not have __SANITIZE_UNDEFINED__ */
#define __no_sanitize_undefined \
__attribute__((no_sanitize("undefined")))
#else
#define __no_sanitize_undefined
#endif
/*
* Support for __has_feature(coverage_sanitizer) was added in Clang 13 together
* with no_sanitize("coverage"). Prior versions of Clang support coverage
* instrumentation, but cannot be queried for support by the preprocessor.
*/
#if __has_feature(coverage_sanitizer)
#define __no_sanitize_coverage __attribute__((no_sanitize("coverage")))
#else
#define __no_sanitize_coverage
#endif
#if __has_feature(shadow_call_stack)
# define __noscs __attribute__((__no_sanitize__("shadow-call-stack")))
#endif
#define __nocfi __attribute__((__no_sanitize__("cfi")))
#define __cficanonical __attribute__((__cfi_canonical_jump_table__))