On Tue, Sep 23, 2003 at 11:01:11AM -0700, Eric Christopher wrote: > > > > > > > objcopy? > > > > You mean, let gcc generate n64 code, stuff it in n32 objects, and > > objcopy it back to n64? Well, it may work, but it looks more like > > a test of binutils sign-extension handling than a straightforward > > way of creating kernels to me. > > > > Besides, as soon as gcc handles 64bit expansions itself we need > > such an option anyway. > > I'm still trying to figure out why you are going through such weird > contortions at all. I understand not having an elf64 loader. That's what > the objcopy comment was for, everything else I don't understand. Why not > compile for the abi you want? Compare the optimal way to load an address into a register when you have a full 64-bit address space and when you know that addresses are sign extended. I'm told it saves over 100K of code. -- Daniel Jacobowitz MontaVista Software Debian GNU/Linux Developer
