darwin.h (MACHO_SYMBOL_FLAG_VARIABLE): Update comment.

2006-09-07  Eric Christopher  <echristo@apple.com>

        * config/darwin.h (MACHO_SYMBOL_FLAG_VARIABLE): Update
        comment.
        * config/i386/darwin.h (MACHO_SYMBOL_FLAG_VARIABLE):
        Redefine.

From-SVN: r116774

gcc/ChangeLog

+2006-09-07  Eric Christopher  <echristo@apple.com>
+
+	* config/darwin.h (MACHO_SYMBOL_FLAG_VARIABLE): Update
+	comment.
+	* config/i386/darwin.h (MACHO_SYMBOL_FLAG_VARIABLE):
+	Redefine.
+
 2006-09-07  Geoffrey Keating  <geoffk@apple.com>
 
 	* dwarf2out.c: Remove strange characters from comment above

gcc/config/darwin.h

@@ -698,7 +698,9 @@ extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
 
 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
-   variable has been defined in this translation unit.  */
+   variable has been defined in this translation unit.
+   When porting Mach-O to new architectures you need to make
+   sure these aren't clobbered by the backend.  */
 
 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)

gcc/config/i386/darwin.h

@@ -223,3 +223,8 @@ __enable_execute_stack (void *addr)                                     \
 
 #undef TARGET_SET_DEFAULT_TYPE_ATTRIBUTES
 #define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES darwin_set_default_type_attributes
+
+/* This needs to move since i386 uses the first flag and other flags are
+   used in Mach-O.  */
+#undef MACHO_SYMBOL_FLAG_VARIABLE
+#define MACHO_SYMBOL_FLAG_VARIABLE ((SYMBOL_FLAG_MACH_DEP) << 3)