OS-5510 remove lwp_brand_syscall_fast handler
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
OS-4961 lxbrand want fasttrap-like brand hook
Reviewed by: Joshua M. Clulow <jmc@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
OS-3561 lxbrand emulation library should execute on alternate stack
OS-3558 lxbrand add support for full in-kernel syscall handling
OS-3545 lx_syscall_regs should not walk stack
OS-3868 many LTP testcases now hang
OS-3901 lxbrand lx_recvmsg fails to translate control messages when 64-bit
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
Reviewed by: Bryan Cantrill <bryan@joyent.com>

*** 22,32 ****
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
!  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
   */
  
  #ifndef _SYS_KLWP_H
  #define _SYS_KLWP_H
  
--- 22,32 ----
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
!  * Copyright 2016 Joyent, Inc.
   */
  
  #ifndef _SYS_KLWP_H
  #define _SYS_KLWP_H
  
*** 189,199 ****
           * Contracts
           */
          struct ct_template *lwp_ct_active[CTT_MAXTYPE]; /* active templates */
          struct contract *lwp_ct_latest[CTT_MAXTYPE]; /* last created contract */
  
!         void    *lwp_brand;             /* per-lwp brand data */
          struct psinfo *lwp_spymaster;   /* if an agent LWP, our spymaster */
  } klwp_t;
  
  /* lwp states */
  #define LWP_USER        0x01            /* Running in user mode */
--- 189,206 ----
           * Contracts
           */
          struct ct_template *lwp_ct_active[CTT_MAXTYPE]; /* active templates */
          struct contract *lwp_ct_latest[CTT_MAXTYPE]; /* last created contract */
  
!         /*
!          * Branding:
!          * lwp_brand                    - per-lwp brand data
!          * lwp_brand_syscall            - brand syscall interposer
!          */
!         void    *lwp_brand;
!         int     (*lwp_brand_syscall)(void);
! 
          struct psinfo *lwp_spymaster;   /* if an agent LWP, our spymaster */
  } klwp_t;
  
  /* lwp states */
  #define LWP_USER        0x01            /* Running in user mode */