diff options
Diffstat (limited to 'LUFA/Common/Attributes.h')
-rw-r--r-- | LUFA/Common/Attributes.h | 276 |
1 files changed, 138 insertions, 138 deletions
diff --git a/LUFA/Common/Attributes.h b/LUFA/Common/Attributes.h index fed511a50..a3247b0c7 100644 --- a/LUFA/Common/Attributes.h +++ b/LUFA/Common/Attributes.h @@ -1,138 +1,138 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2010.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, distribute, and sell this
- software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- * \brief AVR-GCC special function/variable attribute macros.
- *
- * This file contains macros for applying GCC specific attributes to functions and variables to control various
- * optimizer and code generation features of the compiler. Attributes may be placed in the function prototype
- * or variable declaration in any order, and multiple attributes can be specified for a single item via a space
- * separated list.
- *
- * On incompatible versions of GCC or on other compilers, these macros evaluate to nothing unless they are
- * critical to the code's function and thus must throw a compiler error when used.
- *
- * \note Do not include this file directly, rather include the Common.h header file instead to gain this file's
- * functionality.
- */
-
-/** \ingroup Group_Common
- * @defgroup Group_GCCAttr Function/Variable Attributes
- *
- * Macros for easy access GCC function and variable attributes, which can be applied to function prototypes or
- * variable attributes.
- *
- * @{
- */
-
-#ifndef __FUNCATTR_H__
-#define __FUNCATTR_H__
-
- /* Preprocessor Checks: */
- #if !defined(__COMMON_H__)
- #error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality.
- #endif
-
- /* Public Interface - May be used in end-application: */
- /* Macros: */
- #if (__GNUC__ >= 3) || defined(__DOXYGEN__)
- /** Indicates to the compiler that the function can not ever return, so that any stack restoring or
- * return code may be omitted by the compiler in the resulting binary.
- */
- #define ATTR_NO_RETURN __attribute__ ((noreturn))
-
- /** Indicates that the function returns a value which should not be ignored by the user code. When
- * applied, any ignored return value from calling the function will produce a compiler warning.
- */
- #define ATTR_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
-
- /** Indicates that the specified parameters of the function are pointers which should never be NULL.
- * When applied as a 1-based comma separated list the compiler will emit a warning if the specified
- * parameters are known at compiler time to be NULL at the point of calling the function.
- */
- #define ATTR_NON_NULL_PTR_ARG(...) __attribute__ ((nonnull (__VA_ARGS__)))
-
- /** Removes any preamble or postamble from the function. When used, the function will not have any
- * register or stack saving code. This should be used with caution, and when used the programmer
- * is responsible for maintaining stack and register integrity.
- */
- #define ATTR_NAKED __attribute__ ((naked))
-
- /** Prevents the compiler from considering a specified function for inlining. When applied, the given
- * function will not be inlined under any circumstances.
- */
- #define ATTR_NO_INLINE __attribute__ ((noinline))
-
- /** Forces the compiler to inline the specified function. When applied, the given function will be
- * inlined under all circumstances.
- */
- #define ATTR_ALWAYS_INLINE __attribute__ ((always_inline))
-
- /** Indicates that the specified function is pure, in that it has no side-effects other than global
- * or parameter variable access.
- */
- #define ATTR_PURE __attribute__ ((pure))
-
- /** Indicates that the specified function is constant, in that it has no side effects other than
- * parameter access.
- */
- #define ATTR_CONST __attribute__ ((const))
-
- /** Marks a given function as deprecated, which produces a warning if the function is called. */
- #define ATTR_DEPRECATED __attribute__ ((deprecated))
-
- /** Marks a function as a weak reference, which can be overridden by other functions with an
- * identical name (in which case the weak reference is discarded at link time).
- */
- #define ATTR_WEAK __attribute__ ((weak))
-
- /** Forces the compiler to not automatically zero the given global variable on startup, so that the
- * current RAM contents is retained. Under most conditions this value will be random due to the
- * behaviour of volatile memory once power is removed, but may be used in some specific circumstances,
- * like the passing of values back after a system watchdog reset.
- */
- #define ATTR_NO_INIT __attribute__ ((section (".noinit")))
- #endif
-
- /** Places the function in one of the initialization sections, which execute before the main function
- * of the application. Refer to the avr-libc manual for more information on the initialization sections.
- *
- * \param[in] x Initialization section number where the function should be placed
- */
- #define ATTR_INIT_SECTION(x) __attribute__ ((naked, section (".init" #x )))
-
- /** Marks a function as an alias for another function.
- *
- * \param[in] x Name of the function which the given function name should alias
- */
- #define ATTR_ALIAS(x) __attribute__ ((alias( #x )))
-#endif
-
-/** @} */
+/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaim all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * \brief AVR-GCC special function/variable attribute macros. + * + * This file contains macros for applying GCC specific attributes to functions and variables to control various + * optimizer and code generation features of the compiler. Attributes may be placed in the function prototype + * or variable declaration in any order, and multiple attributes can be specified for a single item via a space + * separated list. + * + * On incompatible versions of GCC or on other compilers, these macros evaluate to nothing unless they are + * critical to the code's function and thus must throw a compiler error when used. + * + * \note Do not include this file directly, rather include the Common.h header file instead to gain this file's + * functionality. + */ + +/** \ingroup Group_Common + * @defgroup Group_GCCAttr Function/Variable Attributes + * + * Macros for easy access GCC function and variable attributes, which can be applied to function prototypes or + * variable attributes. + * + * @{ + */ + +#ifndef __FUNCATTR_H__ +#define __FUNCATTR_H__ + + /* Preprocessor Checks: */ + #if !defined(__COMMON_H__) + #error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality. + #endif + + /* Public Interface - May be used in end-application: */ + /* Macros: */ + #if (__GNUC__ >= 3) || defined(__DOXYGEN__) + /** Indicates to the compiler that the function can not ever return, so that any stack restoring or + * return code may be omitted by the compiler in the resulting binary. + */ + #define ATTR_NO_RETURN __attribute__ ((noreturn)) + + /** Indicates that the function returns a value which should not be ignored by the user code. When + * applied, any ignored return value from calling the function will produce a compiler warning. + */ + #define ATTR_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result)) + + /** Indicates that the specified parameters of the function are pointers which should never be NULL. + * When applied as a 1-based comma separated list the compiler will emit a warning if the specified + * parameters are known at compiler time to be NULL at the point of calling the function. + */ + #define ATTR_NON_NULL_PTR_ARG(...) __attribute__ ((nonnull (__VA_ARGS__))) + + /** Removes any preamble or postamble from the function. When used, the function will not have any + * register or stack saving code. This should be used with caution, and when used the programmer + * is responsible for maintaining stack and register integrity. + */ + #define ATTR_NAKED __attribute__ ((naked)) + + /** Prevents the compiler from considering a specified function for inlining. When applied, the given + * function will not be inlined under any circumstances. + */ + #define ATTR_NO_INLINE __attribute__ ((noinline)) + + /** Forces the compiler to inline the specified function. When applied, the given function will be + * inlined under all circumstances. + */ + #define ATTR_ALWAYS_INLINE __attribute__ ((always_inline)) + + /** Indicates that the specified function is pure, in that it has no side-effects other than global + * or parameter variable access. + */ + #define ATTR_PURE __attribute__ ((pure)) + + /** Indicates that the specified function is constant, in that it has no side effects other than + * parameter access. + */ + #define ATTR_CONST __attribute__ ((const)) + + /** Marks a given function as deprecated, which produces a warning if the function is called. */ + #define ATTR_DEPRECATED __attribute__ ((deprecated)) + + /** Marks a function as a weak reference, which can be overridden by other functions with an + * identical name (in which case the weak reference is discarded at link time). + */ + #define ATTR_WEAK __attribute__ ((weak)) + + /** Forces the compiler to not automatically zero the given global variable on startup, so that the + * current RAM contents is retained. Under most conditions this value will be random due to the + * behaviour of volatile memory once power is removed, but may be used in some specific circumstances, + * like the passing of values back after a system watchdog reset. + */ + #define ATTR_NO_INIT __attribute__ ((section (".noinit"))) + #endif + + /** Places the function in one of the initialization sections, which execute before the main function + * of the application. Refer to the avr-libc manual for more information on the initialization sections. + * + * \param[in] x Initialization section number where the function should be placed + */ + #define ATTR_INIT_SECTION(x) __attribute__ ((naked, section (".init" #x ))) + + /** Marks a function as an alias for another function. + * + * \param[in] x Name of the function which the given function name should alias + */ + #define ATTR_ALIAS(x) __attribute__ ((alias( #x ))) +#endif + +/** @} */ |