patch-1.3.76 linux/include/linux/symtab_begin.h

• Lines: 41
• Date: Sun Mar 17 16:15:05 1996
• Orig file: v1.3.75/linux/include/linux/symtab_begin.h
• Orig date: Sat Feb 17 16:02:54 1996

diff -u --recursive --new-file v1.3.75/linux/include/linux/symtab_begin.h linux/include/linux/symtab_begin.h
@@ -3,19 +3,37 @@
 #ifdef MODVERSIONS
 # undef _set_ver
 # undef X
+/*
+ * These two macros _will_ get enough arguments from the X* macros
+ * since "sym" expands to "symaddr, symstr" from the #define in *.ver
+ */
+# define _basic_version(symaddr,symstr)  symaddr, symstr
+# define _alias_version(really,symaddr,symstr)  (void *) & really , symstr
 
 # ifndef __GENKSYMS__
 #  ifdef MODULE
 #    define _set_ver(sym,ver) \
-	{ (void *) & sym ## _R ## ver, SYMBOL_NAME_STR(sym) "_R" #ver }
+	(void *) & sym ## _R ## ver, SYMBOL_NAME_STR(sym) "_R" #ver
 #  else /* !MODULE */
 #    define _set_ver(sym,ver) \
-	{ (void *) & sym, SYMBOL_NAME_STR(sym) "_R" #ver }
+	(void *) & sym, SYMBOL_NAME_STR(sym) "_R" #ver
 #  endif /* !MODULE */
-#  define X(a) a
+#  define X(sym) { _basic_version(sym) }
+/*
+ * For _really_ stacked modules:
+ *
+ * Use "Xalias(local_symbol, symbol_from_other_module)"
+ * to make subsequent modules really use "local_symbol"
+ * when they think that they are using "symbol_from_other_module"
+ *
+ * The "aliasing" module can still use "symbol_from_other_module",
+ * but can now replace and/or modify the behaviour of that symbol.
+ */
+#  define Xalias(really,sym) { _alias_version(really,sym) }
 # endif /* !__GENKSYMS__ */
 #else /* !MODVERSIONS */
 # define X(sym) { (void *) & sym, SYMBOL_NAME_STR(sym)}
+# define Xalias(really,sym) { (void *) & really, SYMBOL_NAME_STR(sym)}
 #endif /* MODVERSIONS */
 /*
  * Some symbols always need to be unversioned.  This includes