39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
#ifndef __ASM_HOST_LDT_X86_64_H
|
|
#define __ASM_HOST_LDT_X86_64_H
|
|
|
|
#include "asm/arch/ldt.h"
|
|
|
|
/*
|
|
* macros stolen from include/asm-x86_64/desc.h
|
|
*/
|
|
#define LDT_entry_a(info) \
|
|
((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
|
|
|
|
/* Don't allow setting of the lm bit. It is useless anyways because
|
|
* 64bit system calls require __USER_CS. */
|
|
#define LDT_entry_b(info) \
|
|
(((info)->base_addr & 0xff000000) | \
|
|
(((info)->base_addr & 0x00ff0000) >> 16) | \
|
|
((info)->limit & 0xf0000) | \
|
|
(((info)->read_exec_only ^ 1) << 9) | \
|
|
((info)->contents << 10) | \
|
|
(((info)->seg_not_present ^ 1) << 15) | \
|
|
((info)->seg_32bit << 22) | \
|
|
((info)->limit_in_pages << 23) | \
|
|
((info)->useable << 20) | \
|
|
/* ((info)->lm << 21) | */ \
|
|
0x7000)
|
|
|
|
#define LDT_empty(info) (\
|
|
(info)->base_addr == 0 && \
|
|
(info)->limit == 0 && \
|
|
(info)->contents == 0 && \
|
|
(info)->read_exec_only == 1 && \
|
|
(info)->seg_32bit == 0 && \
|
|
(info)->limit_in_pages == 0 && \
|
|
(info)->seg_not_present == 1 && \
|
|
(info)->useable == 0 && \
|
|
(info)->lm == 0)
|
|
|
|
#endif
|