On Fri, Sep 30, 2005 at 08:46:55PM +0100, Dominic Sweetman wrote: > > Ralf Baechle (ralf@xxxxxxxxxxxxxx) writes: > > > I quite deliberately did omit DSP support from 64-bit ptrace(2); there > > is currently no MIPS64 processor with DSP support that I know of. > > This is true so far. > > But assuming that 64-bit processing becomes increasingly interesting > (which seems certain) and that some kind of DSP support with extra > registers remains attractive (which seems fairly likely)... well, I'd > have said that any 64-bit MIPS CPU configured from now on is quite > likely to have extra DSP registers. > > So while "you aren't going to need it" for a while, anyone thinking of > doing a non-compatible change to ptrace might want to reserve some > space for these registers. In the future they should be added using PTRACE_GETDSPREGS, or something similar. No one's designed that yet, so the first person to need it gets to do it right. -- Daniel Jacobowitz CodeSourcery, LLC
