#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__ #ifdef __GNUC__ #include #endif #if defined(CC_USING_HOTPATCH) && !defined(__CHECKER__) #define notrace __attribute__((hotpatch(0,0))) #else #define notrace __attribute__((no_instrument_function)) #endif /* Intel compiler defines __GNUC__. So we will overwrite implementations * coming from above header files here */ #ifdef __INTEL_COMPILER # include #endif /* Clang compiler defines __GNUC__. So we will overwrite implementations * coming from above header files here */ #ifdef __clang__ #include #endif /* * Generic compiler-dependent 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; }; #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ #ifdef __KERNEL__ /* * Allow us to mark functions as 'deprecated' and have gcc emit a nice * warning for each use, in hopes of speeding the functions removal. * Usage is: * int __deprecated foo(void) */ #ifndef __deprecated # define __deprecated /* unimplemented */ #endif #ifdef MODULE #define __deprecated_for_modules __deprecated #else #define __deprecated_for_modules #endif #ifndef __must_check #define __must_check #endif #ifndef CONFIG_ENABLE_MUST_CHECK #undef __must_check #define __must_check #endif #ifndef CONFIG_ENABLE_WARN_DEPRECATED #undef __deprecated #undef __deprecated_for_modules #define __deprecated #define __deprecated_for_modules #endif #ifndef __malloc #define __malloc #endif /* * Allow us to avoid 'defined but not used' warnings on functions and data, * as well as force them to be emitted to the assembly file. * * As of gcc 3.4, static functions that are not marked with attribute((used)) * may be elided from the assembly file. As of gcc 3.4, static data not so * marked will not be elided, but this may change in a future gcc version. * * NOTE: Because distributions shipped with a backported unit-at-a-time * compiler in gcc 3.3, we must define __used to be __attribute__((used)) * for gcc >=3.3 instead of 3.4. * * In prior versions of gcc, such functions and data would be emitted, but * would be warned about except with attribute((unused)). * * Mark functions that are referenced only in inline assembly as __used so * the code is emitted even though it appears to be unreferenced. */ #ifndef __used # define __used /* unimplemented */ #endif #ifndef __maybe_unused # define __maybe_unused /* unimplemented */ #endif #ifndef __always_unused # define __always_unused /* unimplemented */ #endif #ifndef noinline #define noinline #endif /* * Rather then using noinline to prevent stack consumption, use * noinline_for_stack instead. For documentation reasons. */ #define noinline_for_stack noinline #ifndef __always_inline #define __always_inline inline #endif #endif /* __KERNEL__ */ /* * From the GCC manual: * * Many functions do not examine any values except their arguments, * and have no effects except the return value. Basically this is * just slightly more strict class than the `pure' attribute above, * since function is not allowed to read global memory. * * Note that a function that has pointer arguments and examines the * data pointed to must _not_ be declared `const'. Likewise, a * function that calls a non-`const' function usually must not be * `const'. It does not make sense for a `const' function to return * `void'. */ #ifndef __attribute_const__ # define __attribute_const__ /* unimplemented */ #endif #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 /* * Tell gcc if a function is cold. The compiler will assume any path * directly leading to the call is unlikely. */ #ifndef __cold #define __cold #endif /* Simple shorthand for a section definition */ #ifndef __section # define __section(S) __attribute__ ((__section__(#S))) #endif #ifndef __visible #define __visible #endif #ifndef __nostackprotector # define __nostackprotector #endif /* * Assume alignment of return value. */ #ifndef __assume_aligned #define __assume_aligned(a, ...) #endif /* Are two types/vars the same type (ignoring qualifiers)? */ #ifndef __same_type # define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b)) #endif /* Is this type a native word size -- useful for atomic operations */ #ifndef __native_word # define __native_word(t) (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long)) #endif #endif /* __LINUX_COMPILER_TYPES_H */