9210 remove KMDB branch debugging support
9211 ::crregs could do with cr2/cr3 support
9209 ::ttrace should be able to filter by thread
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
Reviewed by: Yuri Pankov <yuripv@yuripv.net>

*** 19,32 ****
   * CDDL HEADER END
   */
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  /*
   * Kernel Process View Target
   *
   * The kproc target is activated when the user is debugging a kernel using the
   * kvm target and executes a ::context dcmd to change the debugger view to one
--- 19,32 ----
   * CDDL HEADER END
   */
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  *
+  * Copyright 2018 Joyent, Inc.
   */
  
  /*
   * Kernel Process View Target
   *
   * The kproc target is activated when the user is debugging a kernel using the
   * kvm target and executes a ::context dcmd to change the debugger view to one
*** 917,927 ****
          (struct ctf_file *(*)()) mdb_tgt_null,  /* t_name_to_ctf */
          kp_status,                              /* t_status */
          (int (*)()) mdb_tgt_notsup,             /* t_run */
          (int (*)()) mdb_tgt_notsup,             /* t_step */
          (int (*)()) mdb_tgt_notsup,             /* t_step_out */
-         (int (*)()) mdb_tgt_notsup,             /* t_step_branch */
          (int (*)()) mdb_tgt_notsup,             /* t_next */
          (int (*)()) mdb_tgt_notsup,             /* t_cont */
          (int (*)()) mdb_tgt_notsup,             /* t_signal */
          (int (*)()) mdb_tgt_null,               /* t_add_sbrkpt */
          (int (*)()) mdb_tgt_null,               /* t_add_vbrkpt */
--- 917,926 ----