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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146/* SPDX-License-Identifier: GPL-2.0 */#ifndef __LINUX_COMPILER_TYPES_H#error "Please do not include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead."#endif
/* * Common definitions for all gcc versions go here. */#define GCC_VERSION (__GNUC__ * 10000 \ + __GNUC_MINOR__ * 100 \ + __GNUC_PATCHLEVEL__)
/* * This macro obfuscates arithmetic on a variable address so that gcc * shouldn't recognize the original var, and make assumptions about it. * * This is needed because the C standard makes it undefined to do * pointer arithmetic on "objects" outside their boundaries and the * gcc optimizers assume this is the case. In particular they * assume such arithmetic does not wrap. * * A miscompilation has been observed because of this on PPC. * To work around it we hide the relationship of the pointer and the object * using this macro. * * Versions of the ppc64 compiler before 4.1 had a bug where use of * RELOC_HIDE could trash r30. The bug can be worked around by changing * the inline assembly constraint from =g to =r, in this particular * case either is valid. */#define RELOC_HIDE(ptr, off) \({ \ unsigned long __ptr; \ __asm__ ("" : "=r"(__ptr) : "0"(ptr)); \ (typeof(ptr)) (__ptr + (off)); \})
#if defined(LATENT_ENTROPY_PLUGIN) && !defined(__CHECKER__)#define __latent_entropy __attribute__((latent_entropy))#endif
/* * calling noreturn functions, __builtin_unreachable() and __builtin_trap() * confuse the stack allocation in gcc, leading to overly large stack * frames, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82365 * * Adding an empty inline assembly before it works around the problem */#define barrier_before_unreachable() asm volatile("")
#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 GCC_VERSION >= 70000#define KASAN_ABI_VERSION 5#else#define KASAN_ABI_VERSION 4#endif
#ifdef CONFIG_SHADOW_CALL_STACK#define __noscs __attribute__((__no_sanitize__("shadow-call-stack")))#endif
#ifdef __SANITIZE_HWADDRESS__#define __no_sanitize_address __attribute__((__no_sanitize__("hwaddress")))#else#define __no_sanitize_address __attribute__((__no_sanitize_address__))#endif
#if defined(__SANITIZE_THREAD__)#define __no_sanitize_thread __attribute__((__no_sanitize_thread__))#else#define __no_sanitize_thread#endif
#define __no_sanitize_undefined __attribute__((__no_sanitize_undefined__))
/* * Only supported since gcc >= 12 */#if defined(CONFIG_KCOV) && __has_attribute(__no_sanitize_coverage__)#define __no_sanitize_coverage __attribute__((__no_sanitize_coverage__))#else#define __no_sanitize_coverage#endif
/* * Treat __SANITIZE_HWADDRESS__ the same as __SANITIZE_ADDRESS__ in the kernel, * matching the defines used by Clang. */#ifdef __SANITIZE_HWADDRESS__#define __SANITIZE_ADDRESS__#endif
/* * GCC does not support KMSAN. */#define __no_sanitize_memory#define __no_kmsan_checks
/* * Turn individual warnings and errors on and off locally, depending * on version. */#define __diag_GCC(version, severity, s) \ __diag_GCC_ ## version(__diag_GCC_ ## severity s)
/* Severity used in pragma directives */#define __diag_GCC_ignore ignored#define __diag_GCC_warn warning#define __diag_GCC_error error
#define __diag_str1(s) #s#define __diag_str(s) __diag_str1(s)#define __diag(s) _Pragma(__diag_str(GCC diagnostic s))
#if GCC_VERSION >= 80000#define __diag_GCC_8(s) __diag(s)#else#define __diag_GCC_8(s)#endif
#define __diag_GCC_all(s) __diag(s)
#define __diag_ignore_all(option, comment) \ __diag(__diag_GCC_ignore option)
/* * Prior to 9.1, -Wno-alloc-size-larger-than (and therefore the "alloc_size" * attribute) do not work, and must be disabled. */#if GCC_VERSION < 90100#undef __alloc_size__#endif
/* * Declare compiler support for __typeof_unqual__() operator. * * Bindgen uses LLVM even if our C compiler is GCC, so we cannot * rely on the auto-detected CONFIG_CC_HAS_TYPEOF_UNQUAL. */#define CC_HAS_TYPEOF_UNQUAL (__GNUC__ >= 14)