• Paul Mundt's avatar
    sh: Use a jump call table for debug trap handlers. · f413d0d9
    Paul Mundt authored
    This rips out most of the needlessly complicated sh_bios and kgdb
    trap handling, and forces it all through a common fast dispatch path.
    As more debug traps are inserted, it's important to keep them in sync
    for all of the parts, not just SH-3/4.
    
    As the SH-2 parts are unable to do traps in the >= 0x40 range, we
    restrict the debug traps to the 0x30-0x3f range on all parts, and
    also bump the kgdb breakpoint trap down in to this range (from 0xff
    to 0x3c) so it's possible to use for nommu.
    
    Optionally, this table can be padded out to catch spurious traps for
    SH-3/4, but we don't do that yet..
    Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
    f413d0d9
kgdb_stub.c 35.3 KB