Hi Mike, >> My question is. >> the ash_ptr_to_globals_misc, ash_ptr_to_globals_memstack >> and ash_ptr_to_globals_var >> are defined in ash_ptr_hack.c as normal pointers. But in ash.c, they are >> declared as const >> pointers. What is the benefit of doing that? > > the pointer itself is the thing that is const, not the memory it points to. > this lets the compiler optimize the loads by generating relocations via the > pointer ... there's the fixup at the initial load time, but after that, it's > just offsets to a constant memory location. but removing the const markings, > the compiler has to reload the pointer everytime.
Then why is "cheating" in the header file defining it non-const? Cheers, Xabier Oneca_,,_ _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
