9723 provide support for VMM's GDT handling
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>

*** 11,49 ****
  
  /*
   * Copyright 2018 Joyent, Inc.
   */
  
- #if !defined(__lint)
-         .file   "unix_sup.s"
- #endif /* __lint */
- 
  /*
   * Support routines for the unix kmdb module
   */
  
- #include <sys/asm_linkage.h>
- 
  #if defined(__lint)
  
  #include <sys/types.h>
  
! ulong_t
! kmdb_unix_getcr0(void)
! { return (0); }
  
! ulong_t
! kmdb_unix_getcr3(void)
! { return (0); }
  
! ulong_t
! kmdb_unix_getcr4(void)
! { return (0); }
  
- #else   /* __lint */
- 
- #if defined(__amd64)
          ENTRY(kmdb_unix_getcr0)
          movq %cr0, %rax
          ret
          SET_SIZE(kmdb_unix_getcr0)
  
--- 11,34 ----
  
  /*
   * Copyright 2018 Joyent, Inc.
   */
  
  /*
   * Support routines for the unix kmdb module
   */
  
  #if defined(__lint)
  
  #include <sys/types.h>
  
! #else
  
! #include <sys/asm_linkage.h>
  
!         .file   "unix_sup.s"
  
          ENTRY(kmdb_unix_getcr0)
          movq %cr0, %rax
          ret
          SET_SIZE(kmdb_unix_getcr0)
  
*** 60,88 ****
          ENTRY(kmdb_unix_getcr4)
          movq %cr4, %rax
          ret
          SET_SIZE(kmdb_unix_getcr4)
  
! #elif defined (__i386)
!         ENTRY(kmdb_unix_getcr0)
!         movl %cr0, %eax
          ret
!         SET_SIZE(kmdb_unix_getcr0)
  
!         ENTRY(kmdb_unix_getcr2)
!         movl %cr2, %eax
!         ret
!         SET_SIZE(kmdb_unix_getcr2)
! 
!         ENTRY(kmdb_unix_getcr3)
!         movl %cr3, %eax
!         ret
!         SET_SIZE(kmdb_unix_getcr3)
! 
!         ENTRY(kmdb_unix_getcr4)
!         movl %cr4, %eax
!         ret
!         SET_SIZE(kmdb_unix_getcr4)
! 
! #endif  /* __i386 */
! 
! #endif /* __lint */
--- 45,55 ----
          ENTRY(kmdb_unix_getcr4)
          movq %cr4, %rax
          ret
          SET_SIZE(kmdb_unix_getcr4)
  
!         ENTRY(kmdb_unix_getgdtr)
!         sgdt (%rdi)
          ret
!         SET_SIZE(kmdb_unix_getgdtr)
  
! #endif /* !__lint */