/*
     * NB: QEMU's gdb stub removes all breakpoints on '?', so we have to
     * only call this on target attach!  We have to trust our status as
     * TARGET_PAUSED when we call gdb_pause(), if it succeeds.  This
     * must also be the gdb client's default behavior, although I don't
     * think I saw this in the protocol docs.
     */

(And of course gdb stubs always send stop statuses on breakpoint
exception or whatever... so strictly speaking, we don't need to rely on
this call at all.)