#ifndef __LINUX_COMPILER_TYPES_H #define __LINUX_COMPILER_TYPES_H #ifndef __ASSEMBLY__ #ifdef __CHECKER__ # define __user __attribute__((noderef, address_space(1))) # define __kernel __attribute__((address_space(0))) # define __safe __attribute__((safe)) # define __force __attribute__((force)) # define __nocast __attribute__((nocast)) # define __iomem __attribute__((noderef, address_space(2))) # define __must_hold(x) __attribute__((context(x,1,1))) # define __acquires(x) __attribute__((context(x,0,1))) # define __releases(x) __attribute__((context(x,1,0))) # define __acquire(x) __context__(x,1) # define __release(x) __context__(x,-1) # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0) # define __percpu __attribute__((noderef, address_space(3))) # define __rcu __attribute__((noderef, address_space(4))) # define __private __attribute__((noderef)) extern void __chk_user_ptr(const volatile void __user *); extern void __chk_io_ptr(const volatile void __iomem *); # define ACCESS_PRIVATE(p, member) (*((typeof((p)->member) __force *) &(p)->member)) #else /* __CHECKER__ */ # ifdef STRUCTLEAK_PLUGIN # define __user __attribute__((user)) # else # define __user # endif # define __kernel # define __safe # define __force # define __nocast # define __iomem # define __chk_user_ptr(x) (void)0 # define __chk_io_ptr(x) (void)0 # define __builtin_warning(x, y...) (1) # define __must_hold(x) # define __acquires(x) # define __releases(x) # define __acquire(x) (void)0 # define __release(x) (void)0 # define __cond_lock(x,c) (c) # define __percpu # define __rcu # define __private # define ACCESS_PRIVATE(p, member) ((p)->member) #endif /* __CHECKER__ */ /* Indirect macros required for expanded argument pasting, eg. __LINE__. */ #define ___PASTE(a,b) a##b #define __PASTE(a,b) ___PASTE(a,b) #ifdef __KERNEL__ /* Compiler specific macros. */ #ifdef __clang__ #include #elif defined(__INTEL_COMPILER) #include #elif defined(__GNUC__) /* The above compilers also define __GNUC__, so order is important here. */ #include #else #error "Unknown compiler" #endif /* * Some architectures need to provide custom definitions of macros provided * by linux/compiler-*.h, and can do so using asm/compiler.h. We include that * conditionally rather than using an asm-generic wrapper in order to avoid * build failures if any C compilation, which will include this file via an * -include argument in c_flags, occurs prior to the asm-generic wrappers being * generated. */ #ifdef CONFIG_HAVE_ARCH_COMPILER_H #include #endif /* * Generic compiler-independent macros required for kernel * build go below this comment. Actual compiler/compiler version * specific implementations come from the above header files */ struct ftrace_branch_data { const char *func; const char *file; unsigned line; union { struct { unsigned long correct; unsigned long incorrect; }; struct { unsigned long miss; unsigned long hit; }; unsigned long miss_hit[2]; }; }; struct ftrace_likely_data { struct ftrace_branch_data data; unsigned long constant; }; /* Don't. Just don't. */ #define __deprecated #define __deprecated_for_modules #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ /* * The below symbols may be defined for one or more, but not ALL, of the above * compilers. We don't consider that to be an error, so set them to nothing. * For example, some of them are for compiler specific plugins. */ #ifndef __designated_init # define __designated_init #endif #ifndef __latent_entropy # define __latent_entropy #endif #ifndef __randomize_layout # define __randomize_layout __designated_init #endif #ifndef __no_randomize_layout # define __no_randomize_layout #endif #ifndef randomized_struct_fields_start # define randomized_struct_fields_start # define randomized_struct_fields_end #endif #ifndef __visible #define __visible #endif /* * Assume alignment of return value. */ #ifndef __assume_aligned #define __assume_aligned(a, ...) #endif /* Are two types/vars the same type (ignoring qualifiers)? */ #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b)) /* Is this type a native word size -- useful for atomic operations */ #define __native_word(t) \ (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \ sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long)) #ifndef __attribute_const__ #define __attribute_const__ __attribute__((__const__)) #endif #ifndef __noclone #define __noclone #endif /* Helpers for emitting diagnostics in pragmas. */ #ifndef __diag #define __diag(string) #endif #ifndef __diag_GCC #define __diag_GCC(version, severity, string) #endif #define __diag_push() __diag(push) #define __diag_pop() __diag(pop) #define __diag_ignore(compiler, version, option, comment) \ __diag_ ## compiler(version, ignore, option) #define __diag_warn(compiler, version, option, comment) \ __diag_ ## compiler(version, warn, option) #define __diag_error(compiler, version, option, comment) \ __diag_ ## compiler(version, error, option) /* * From the GCC manual: * * Many functions have no effects except the return value and their * return value depends only on the parameters and/or global * variables. Such a function can be subject to common subexpression * elimination and loop optimization just as an arithmetic operator * would be. * [...] */ #define __pure __attribute__((pure)) #define __aligned(x) __attribute__((aligned(x))) #define __printf(a, b) __attribute__((format(printf, a, b))) #define __scanf(a, b) __attribute__((format(scanf, a, b))) #define __maybe_unused __attribute__((unused)) #define __always_unused __attribute__((unused)) #define __mode(x) __attribute__((mode(x))) #define __malloc __attribute__((__malloc__)) #define __used __attribute__((__used__)) #define __noreturn __attribute__((noreturn)) #define __packed __attribute__((packed)) #define __weak __attribute__((weak)) #define __alias(symbol) __attribute__((alias(#symbol))) #define __cold __attribute__((cold)) #define __section(S) __attribute__((__section__(#S))) #ifdef CONFIG_ENABLE_MUST_CHECK #define __must_check __attribute__((warn_unused_result)) #else #define __must_check #endif #if defined(CC_USING_HOTPATCH) && !defined(__CHECKER__) #define notrace __attribute__((hotpatch(0, 0))) #else #define notrace __attribute__((no_instrument_function)) #endif /* * it doesn't make sense on ARM (currently the only user of __naked) * to trace naked functions because then mcount is called without * stack and frame pointer being set up and there is no chance to * restore the lr register to the value before mcount was called. */ #define __naked __attribute__((naked)) notrace #define __compiler_offsetof(a, b) __builtin_offsetof(a, b) /* * Feature detection for gnu_inline (gnu89 extern inline semantics). Either * __GNUC_STDC_INLINE__ is defined (not using gnu89 extern inline semantics, * and we opt in to the gnu89 semantics), or __GNUC_STDC_INLINE__ is not * defined so the gnu89 semantics are the default. */ #ifdef __GNUC_STDC_INLINE__ # define __gnu_inline __attribute__((gnu_inline)) #else # define __gnu_inline #endif /* * Force always-inline if the user requests it so via the .config. * GCC does not warn about unused static inline functions for * -Wunused-function. This turns out to avoid the need for complex #ifdef * directives. Suppress the warning in clang as well by using "unused" * function attribute, which is redundant but not harmful for gcc. * Prefer gnu_inline, so that extern inline functions do not emit an * externally visible function. This makes extern inline behave as per gnu89 * semantics rather than c99. This prevents multiple symbol definition errors * of extern inline functions at link time. * A lot of inline functions can cause havoc with function tracing. */ #if !defined(CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING) || \ !defined(CONFIG_OPTIMIZE_INLINING) #define inline \ inline __attribute__((always_inline, unused)) notrace __gnu_inline #else #define inline inline __attribute__((unused)) notrace __gnu_inline #endif #define __inline__ inline #define __inline inline #define noinline __attribute__((noinline)) #ifndef __always_inline #define __always_inline inline __attribute__((always_inline)) #endif /* * Rather then using noinline to prevent stack consumption, use * noinline_for_stack instead. For documentation reasons. */ #define noinline_for_stack noinline #endif /* __LINUX_COMPILER_TYPES_H */