1/* 2 * ldt.h 3 * 4 * Definitions of structures used with the modify_ldt system call. 5 */ 6#ifndef _LINUX_LDT_H 7#define _LINUX_LDT_H 8 9/* Maximum number of LDT entries supported. */ 10#define LDT_ENTRIES 8192 11/* The size of each LDT entry. */ 12#define LDT_ENTRY_SIZE 8 13 14#ifndef __ASSEMBLY__ 15struct user_desc { 16 unsigned int entry_number; 17 unsigned long base_addr; 18 unsigned int limit; 19 unsigned int seg_32bit:1; 20 unsigned int contents:2; 21 unsigned int read_exec_only:1; 22 unsigned int limit_in_pages:1; 23 unsigned int seg_not_present:1; 24 unsigned int useable:1; 25}; 26 27#define MODIFY_LDT_CONTENTS_DATA 0 28#define MODIFY_LDT_CONTENTS_STACK 1 29#define MODIFY_LDT_CONTENTS_CODE 2 30 31#endif /* !__ASSEMBLY__ */ 32#endif 33