diff options
Diffstat (limited to 'src/include/compiler.h')
| -rw-r--r-- | src/include/compiler.h | 33 |
1 files changed, 2 insertions, 31 deletions
diff --git a/src/include/compiler.h b/src/include/compiler.h index a9067c94..654eaac2 100644 --- a/src/include/compiler.h +++ b/src/include/compiler.h @@ -179,41 +179,12 @@ REQUEST_EXPANDED ( CONFIG_SYMBOL ); /** Select file identifier for errno.h (if used) */ #define ERRFILE PREFIX_OBJECT ( ERRFILE_ ) -/** - * @defgroup weakmacros Macros to manage weak symbol definitions - * - * Weak symbols allow one to reference a function in another file - * without necessarily requiring that file to be linked in. In their - * native form, the function will be @c NULL if its file is not linked - * in; these macros provide an inline wrapper that returns an - * appropriate error indication or default value. - * - * @{ - */ #ifndef ASSEMBLY -/** Mangle @a name into its weakly-referenced implementation */ -#define __weak_impl( name ) _w_ ## name - -/** - * Declare a weak function with inline safety wrapper - * - * @v ret Return type of weak function - * @v name Name of function to expose - * @v proto Parenthesized list of arguments with types - * @v args Parenthesized list of argument names - * @v dfl Value to return if weak function is not available - */ -#define __weak_decl( ret, name, proto, args, dfl ) \ - ret __weak_impl( name ) proto __attribute__ (( weak )); \ - static inline ret name proto { \ - if ( __weak_impl( name ) ) \ - return __weak_impl( name ) args; \ - return dfl; \ - } +/** Declare a function as weak (use *before* the definition) */ +#define __weak __attribute__ (( weak )) #endif -/** @} */ /** @defgroup dbg Debugging infrastructure * @{ |