| #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 |
