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#ifndef __LINUX_COMPILER_H
#define __LINUX_COMPILER_H
#ifdef __CHECKER__
# define __user __attribute__((noderef, address_space(1)))
# define __kernel /* default address space */
# define __safe __attribute__((safe))
# define __force __attribute__((force))
extern void __chk_user_ptr(void __user *);
#else
# define __user
# define __kernel
# define __safe
# define __force
# define __chk_user_ptr(x) (void)0
#endif
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#if __GNUC__ > 3
# include <linux/compiler-gcc+.h> /* catch-all for GCC 4, 5, etc. */
#elif __GNUC__ == 3
# include <linux/compiler-gcc3.h>
#elif __GNUC__ == 2
# include <linux/compiler-gcc2.h>
#else
# error Sorry, your compiler is too old/not recognized.
#endif
#endif
/* Intel compiler defines __GNUC__. So we will overwrite implementations
* coming from above header files here
*/
#ifdef __INTEL_COMPILER
# include <linux/compiler-intel.h>
#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
*/
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
/* Optimization barrier */
#ifndef barrier
# define barrier() __memory_barrier()
#endif
#ifndef RELOC_HIDE
# define RELOC_HIDE(ptr, off) \
({ unsigned long __ptr; \
__ptr = (unsigned long) (ptr); \
(typeof(ptr)) (__ptr + (off)); })
#endif
#endif /* __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
#ifndef __must_check
#define __must_check
#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 3.3, static functions that are not marked with attribute((used))
* may be elided from the assembly file. As of gcc 3.3, static data not so
* marked will not be elided, but this may change in a future gcc version.
*
* In prior versions of gcc, such functions and data would be emitted, but
* would be warned about except with attribute((unused)).
*/
#ifndef __attribute_used__
# define __attribute_used__ /* unimplemented */
#endif
/*
* 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.
* [...]
*/
#ifndef __attribute_pure__
# define __attribute_pure__ /* unimplemented */
#endif
/*
* 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 noinline
#define noinline
#endif
#endif /* __LINUX_COMPILER_H */
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