On Fri, 2008-05-02 at 16:38 -0700, David Miller wrote: > Oh, I forgot about how far function calls are done on powerpc. > Yes, that will suck. > > Is there some way to map all of the modules in the low 32-bits and > thus aovid the trampolines? The powerpc call instruction can cover > 4GB like on sparc right? > > Actually, I remember there is some linkage register that has > to be setup on powerpc with the code model you guys use, is > that the problem?
The TOC yes, so we end up doing cross-TOC calls, which we would want to avoid to get to base runtime stuff such as the save/restore bits. Especially useless since those runtime don't need a TOC at all :-) Best would be if we could get those runtime bits linked in the module itself, but I don't know enough about our toolchain to know if that's easy (I suppose everything is always possible :-) I can ask my local expert next week. Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
