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>

*** 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"
- 
  /*
   * Libkvm Kernel Target Intel 32-bit component
   *
   * This file provides the ISA-dependent portion of the libkvm kernel target.
   * For more details on the implementation refer to mdb_kvm.c.
--- 19,32 ----
   * CDDL HEADER END
   */
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  *
+  * Copyright 2018 Joyent, Inc.
   */
  
  /*
   * Libkvm Kernel Target Intel 32-bit component
   *
   * This file provides the ISA-dependent portion of the libkvm kernel target.
   * For more details on the implementation refer to mdb_kvm.c.
*** 136,146 ****
          kt_name_to_ctf,                         /* t_name_to_ctf */
          kt_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_vbrkpt */
          (int (*)()) mdb_tgt_null,               /* t_add_sbrkpt */
--- 136,145 ----