• Michael Neuling's avatar
    powerpc/ptrace: Add DAWR debug feature info for userspace · 517b7314
    Michael Neuling authored
    This adds new debug feature information so that the DAWR can be
    identified by userspace tools like GDB.
    
    Unfortunately the DAWR doesn't sit nicely into the current description
    that ptrace provides to userspace via struct ppc_debug_info.  It doesn't
    allow for specifying that only some ranges are possible or even the end
    alignment constraints (DAWR only allows 512 byte wide ranges which can't
    cross a 512 byte boundary).
    
    After talking to Edjunior Machado (GDB ppc developer), it was decided
    this was the best approach.  Just mark it as debug feature DAWR and
    tools like GDB can internally decide the constraints.
    Signed-off-by: default avatarMichael Neuling <mikey@neuling.org>
    Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
    517b7314