diff options
Diffstat (limited to 'include/linux/compiler-gcc.h')
| -rw-r--r-- | include/linux/compiler-gcc.h | 83 |
1 files changed, 34 insertions, 49 deletions
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index ccbbd31b3aae..5de824a0b3d7 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LINUX_COMPILER_TYPES_H -#error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead." +#error "Please do not include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead." #endif /* @@ -35,12 +35,6 @@ (typeof(ptr)) (__ptr + (off)); \ }) -#ifdef CONFIG_RETPOLINE -#define __noretpoline __attribute__((__indirect_branch__("keep"))) -#endif - -#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) - #if defined(LATENT_ENTROPY_PLUGIN) && !defined(__CHECKER__) #define __latent_entropy __attribute__((latent_entropy)) #endif @@ -54,37 +48,6 @@ */ #define barrier_before_unreachable() asm volatile("") -/* - * Mark a position in code as unreachable. This can be used to - * suppress control flow warnings after asm blocks that transfer - * control elsewhere. - */ -#define unreachable() \ - do { \ - annotate_unreachable(); \ - barrier_before_unreachable(); \ - __builtin_unreachable(); \ - } while (0) - -#if defined(RANDSTRUCT_PLUGIN) && !defined(__CHECKER__) -#define __randomize_layout __attribute__((randomize_layout)) -#define __no_randomize_layout __attribute__((no_randomize_layout)) -/* This anon struct can add padding, so only enable it under randstruct. */ -#define randomized_struct_fields_start struct { -#define randomized_struct_fields_end } __randomize_layout; -#endif - -/* - * GCC 'asm goto' miscompiles certain code sequences: - * - * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670 - * - * Work it around via a compiler barrier quirk suggested by Jakub Jelinek. - * - * (asm goto is automatically volatile - the naming reflects this.) - */ -#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0) - #if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) #define __HAVE_BUILTIN_BSWAP32__ #define __HAVE_BUILTIN_BSWAP64__ @@ -97,26 +60,29 @@ #define KASAN_ABI_VERSION 4 #endif -#if __has_attribute(__no_sanitize_address__) -#define __no_sanitize_address __attribute__((no_sanitize_address)) -#else -#define __no_sanitize_address +#ifdef CONFIG_SHADOW_CALL_STACK +#define __noscs __attribute__((__no_sanitize__("shadow-call-stack"))) #endif -#if defined(__SANITIZE_THREAD__) && __has_attribute(__no_sanitize_thread__) -#define __no_sanitize_thread __attribute__((no_sanitize_thread)) +#ifdef __SANITIZE_HWADDRESS__ +#define __no_sanitize_address __attribute__((__no_sanitize__("hwaddress"))) #else -#define __no_sanitize_thread +#define __no_sanitize_address __attribute__((__no_sanitize_address__)) #endif -#if __has_attribute(__no_sanitize_undefined__) -#define __no_sanitize_undefined __attribute__((no_sanitize_undefined)) +#if defined(__SANITIZE_THREAD__) +#define __no_sanitize_thread __attribute__((__no_sanitize_thread__)) #else -#define __no_sanitize_undefined +#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)) +#define __no_sanitize_coverage __attribute__((__no_sanitize_coverage__)) #else #define __no_sanitize_coverage #endif @@ -130,6 +96,12 @@ #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. */ @@ -151,6 +123,11 @@ #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. @@ -158,3 +135,11 @@ #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) |