1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12#ifndef _ASM_SEGMENT_H
13#define _ASM_SEGMENT_H
14
15#define GDT_ENTRY_TLS_ENTRIES 3
16#define GDT_ENTRY_TLS_MIN 6
17#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
18
19#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
20
21#define GDT_ENTRY_DEFAULT_USER_CS 14
22#define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS * 8 + 3)
23
24#define GDT_ENTRY_DEFAULT_USER_DS 15
25#define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS * 8 + 3)
26
27#define GDT_ENTRY_KERNEL_BASE 12
28
29#define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE + 0)
30#define __KERNEL_CS (GDT_ENTRY_KERNEL_CS * 8)
31
32#define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE + 1)
33#define __KERNEL_DS (GDT_ENTRY_KERNEL_DS * 8)
34
35#define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE + 4)
36#define GDT_ENTRY_LDT (GDT_ENTRY_KERNEL_BASE + 5)
37
38#define GDT_ENTRY_PNPBIOS_BASE (GDT_ENTRY_KERNEL_BASE + 6)
39#define GDT_ENTRY_APMBIOS_BASE (GDT_ENTRY_KERNEL_BASE + 11)
40
41#define GDT_ENTRY_ESPFIX_SS (GDT_ENTRY_KERNEL_BASE + 14)
42#define __ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8)
43
44#define GDT_ENTRY_PERCPU (GDT_ENTRY_KERNEL_BASE + 15)
45#define __KERNEL_PERCPU 0
46
47#define GDT_ENTRY_DOUBLEFAULT_TSS 31
48
49#define GDT_ENTRIES 32
50#define GDT_SIZE (GDT_ENTRIES * 8)
51
52#define GDT_ENTRY_BOOT_CS 2
53#define __BOOT_CS (GDT_ENTRY_BOOT_CS * 8)
54
55#define GDT_ENTRY_BOOT_DS (GDT_ENTRY_BOOT_CS + 1)
56#define __BOOT_DS (GDT_ENTRY_BOOT_DS * 8)
57
58#define GDT_ENTRY_PNPBIOS_CS32 (GDT_ENTRY_PNPBIOS_BASE + 0)
59#define GDT_ENTRY_PNPBIOS_CS16 (GDT_ENTRY_PNPBIOS_BASE + 1)
60#define GDT_ENTRY_PNPBIOS_DS (GDT_ENTRY_PNPBIOS_BASE + 2)
61#define GDT_ENTRY_PNPBIOS_TS1 (GDT_ENTRY_PNPBIOS_BASE + 3)
62#define GDT_ENTRY_PNPBIOS_TS2 (GDT_ENTRY_PNPBIOS_BASE + 4)
63
64#define PNP_CS32 (GDT_ENTRY_PNPBIOS_CS32 * 8)
65#define PNP_CS16 (GDT_ENTRY_PNPBIOS_CS16 * 8)
66#define PNP_DS (GDT_ENTRY_PNPBIOS_DS * 8)
67#define PNP_TS1 (GDT_ENTRY_PNPBIOS_TS1 * 8)
68#define PNP_TS2 (GDT_ENTRY_PNPBIOS_TS2 * 8)
69
70#define IDT_ENTRIES 256
71
72#define SEGMENT_RPL_MASK 0x3
73
74#define SEGMENT_TI_MASK 0x4
75
76#define USER_RPL 0x3
77
78#define SEGMENT_LDT 0x4
79#define SEGMENT_GDT 0x0
80
81#define get_kernel_rpl() 0
82
83#define SEGMENT_IS_KERNEL_CODE(x) (((x) & 0xfc) == GDT_ENTRY_KERNEL_CS * 8)
84
85#define SEGMENT_IS_FLAT_CODE(x) (((x) & 0xec) == GDT_ENTRY_KERNEL_CS * 8)
86
87#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8)
88
89#endif
90