/*
   * ldt.h
   *
   * Definitions of structures used with the modify_ldt system call.
   */
  #ifndef _LINUX_LDT_H
  #define _LINUX_LDT_H
  
  /* Maximum number of LDT entries supported. */
  #define LDT_ENTRIES	8192
  /* The size of each LDT entry. */
  #define LDT_ENTRY_SIZE	8
  
  #ifndef __ASSEMBLY__
  /* Note on 64bit base and limit is ignored and you cannot set
     DS/ES/CS not to the default values if you still want to do syscalls. This
     call is more for 32bit mode therefore. */
  struct user_desc {
  	unsigned int  entry_number;
  	unsigned int  base_addr;
  	unsigned int  limit;
  	unsigned int  seg_32bit:1;
  	unsigned int  contents:2;
  	unsigned int  read_exec_only:1;
  	unsigned int  limit_in_pages:1;
  	unsigned int  seg_not_present:1;
  	unsigned int  useable:1;
  	unsigned int  lm:1;
  };
  
  #define MODIFY_LDT_CONTENTS_DATA	0
  #define MODIFY_LDT_CONTENTS_STACK	1
  #define MODIFY_LDT_CONTENTS_CODE	2
  
  #endif /* !__ASSEMBLY__ */
  #endif