Rémy Saissy writes: > > It would take a massive target-specific backend hack to make that > > happen, as GCC > currently only supports flat address spaces. ;-) > > I don't understand why. > gcc currently consider every data access on i386 to be %ds:offset or > %ss:offset > depending on the instruction.
No, that's not true. gcc doesn't know about %ds or %ss. > The purpose is only to add a way to explicitly indicate the section > to use then is could be %gs:offset or %fs:offset. > > I'm new in gcc hacking therefore I still have to learn more about the > internals but > at first glance it doesn't sounds like a so big work. You'd have to teach gcc about different address spaces. For example, gcc would have to know that %gs:foo couldn't be accessed via %ds. Andrew.
