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#ifndef _ASM_SEGMENT_H
#define _ASM_SEGMENT_H
#include <asm/cache.h>
/* Simple and small GDT entries for booting only */
#define GDT_ENTRY_BOOT_CS 2
#define __BOOT_CS (GDT_ENTRY_BOOT_CS * 8)
#define GDT_ENTRY_BOOT_DS (GDT_ENTRY_BOOT_CS + 1)
#define __BOOT_DS (GDT_ENTRY_BOOT_DS * 8)
#define __KERNEL_CS 0x10
#define __KERNEL_DS 0x18
#define __KERNEL32_CS 0x08
/*
* we cannot use the same code segment descriptor for user and kernel
* -- not even in the long flat mode, because of different DPL /kkeil
* The segment offset needs to contain a RPL. Grr. -AK
* GDT layout to get 64bit syscall right (sysret hardcodes gdt offsets)
*/
#define __USER32_CS 0x23 /* 4*8+3 */
#define __USER_DS 0x2b /* 5*8+3 */
#define __USER_CS 0x33 /* 6*8+3 */
#define __USER32_DS __USER_DS
#define GDT_ENTRY_TSS 8 /* needs two entries */
#define GDT_ENTRY_LDT 10 /* needs two entries */
#define GDT_ENTRY_TLS_MIN 12
#define GDT_ENTRY_TLS_MAX 14
#define GDT_ENTRY_TLS_ENTRIES 3
#define GDT_ENTRY_PER_CPU 15 /* Abused to load per CPU data from limit */
#define __PER_CPU_SEG (GDT_ENTRY_PER_CPU * 8 + 3)
/* TLS indexes for 64bit - hardcoded in arch_prctl */
#define FS_TLS 0
#define GS_TLS 1
#define GS_TLS_SEL ((GDT_ENTRY_TLS_MIN+GS_TLS)*8 + 3)
#define FS_TLS_SEL ((GDT_ENTRY_TLS_MIN+FS_TLS)*8 + 3)
#define IDT_ENTRIES 256
#define GDT_ENTRIES 16
#define GDT_SIZE (GDT_ENTRIES * 8)
#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
#endif
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