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compiler.h

Go to the documentation of this file.

/*****************************************************************************/
/*****************************************************************************/
#ifndef __L4_COMPILER_H__
#define __L4_COMPILER_H__

#if !defined(__ASSEMBLY__) && !defined(__ASSEMBLER__)

//#ifndef __GNUC__
//#error "The libl4sys library must be used with Gcc."
//#endif

#ifndef L4_INLINE
#ifndef __cplusplus
#  ifdef __OPTIMIZE__
#    ifdef STATIC_L4_INLINE
#      define L4_INLINE static __inline__
#    else
#      define L4_INLINE extern __inline__
#    endif
#  else /* ! __OPTIMIZE__ */
#    define L4_INLINE static
#  endif /* ! __OPTIMIZE__ */
#else /* __cplusplus */
#  define L4_INLINE inline
#endif  /* __cplusplus */
#endif  /* L4_INLINE */

#ifndef __cplusplus
#  define EXTERN_C_BEGIN
#  define EXTERN_C_END
#  define EXTERN_C
#else /* __cplusplus */
#  define EXTERN_C_BEGIN extern "C" {
#  define EXTERN_C_END }
#  define EXTERN_C extern "C"
#endif /* __cplusplus */

#define L4_NORETURN __attribute__((noreturn))

#define L4_NOINSTRUMENT __attribute__((no_instrument_function))

#endif /* !__ASSEMBLY__ */

#include <l4/sys/linkage.h>

#if __GNUC__ == 2 && __GNUC_MINOR__ < 96
#define __builtin_expect(x, expected_value) (x)
#endif

#define EXPECT_TRUE(x)  __builtin_expect((x),1)   
#define EXPECT_FALSE(x) __builtin_expect((x),0)   

#if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ >= 4
/* Make sure that the function is not removed by optimization. Without the
 * "used" attribute, unreferenced static functions are removed. */
#define L4_STICKY(x)  __attribute__((used)) x         
/* The deprecated attribute is available with 3.1 and higher (3.3 as here
 * is ok for us */
#define L4_DEPRECATED __attribute__((deprecated))     
#else
/* The "used" attribute is not available with older gcc versions so simply
 * make sure that gcc doesn't warn about unused functions. */
#define L4_STICKY(x)  __attribute__((unused)) x       
#define L4_DEPRECATED                                   
#endif

#define L4_stringify_helper(x) #x                       
#define L4_stringify(x)        L4_stringify_helper(x)   

#endif /* !__L4_COMPILER_H__ */

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