• Paul Mundt's avatar
    sh: Abstracted SH-4A UBC support on hw-breakpoint core. · 4352fc1b
    Paul Mundt authored
    This is the next big chunk of hw_breakpoint support. This decouples
    the SH-4A support from the core and moves it out in to its own stub,
    following many of the conventions established with the perf events
    layering.
    
    In addition to extending SH-4A support to encapsulate the remainder
    of the UBC channels, clock framework support for handling the UBC
    interface clock is added as well, allowing for dynamic clock gating.
    
    This also fixes up a regression introduced by the SIGTRAP handling that
    broke the ksym_tracer, to the extent that the current support works well
    with all of the ksym_tracer/ptrace/kgdb. The kprobes singlestep code will
    follow in turn.
    
    With this in place, the remaining UBC variants (SH-2A and SH-4) can now
    be trivially plugged in.
    Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
    4352fc1b
processor_32.h 4.8 KB