diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 05:20:03 -0400 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 05:20:03 -0400 |
commit | 96a388de5dc53a8b234b3fd41f3ae2cedc9ffd42 (patch) | |
tree | d947a467aa2da3140279617bc4b9b101640d7bf4 /include/asm-x86/segment_32.h | |
parent | 27bd0c955648646abf2a353a8371d28c37bcd982 (diff) |
i386/x86_64: move headers to include/asm-x86
Move the headers to include/asm-x86 and fixup the
header install make rules
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/segment_32.h')
-rw-r--r-- | include/asm-x86/segment_32.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/include/asm-x86/segment_32.h b/include/asm-x86/segment_32.h new file mode 100644 index 000000000000..597a47c2515f --- /dev/null +++ b/include/asm-x86/segment_32.h | |||
@@ -0,0 +1,148 @@ | |||
1 | #ifndef _ASM_SEGMENT_H | ||
2 | #define _ASM_SEGMENT_H | ||
3 | |||
4 | /* | ||
5 | * The layout of the per-CPU GDT under Linux: | ||
6 | * | ||
7 | * 0 - null | ||
8 | * 1 - reserved | ||
9 | * 2 - reserved | ||
10 | * 3 - reserved | ||
11 | * | ||
12 | * 4 - unused <==== new cacheline | ||
13 | * 5 - unused | ||
14 | * | ||
15 | * ------- start of TLS (Thread-Local Storage) segments: | ||
16 | * | ||
17 | * 6 - TLS segment #1 [ glibc's TLS segment ] | ||
18 | * 7 - TLS segment #2 [ Wine's %fs Win32 segment ] | ||
19 | * 8 - TLS segment #3 | ||
20 | * 9 - reserved | ||
21 | * 10 - reserved | ||
22 | * 11 - reserved | ||
23 | * | ||
24 | * ------- start of kernel segments: | ||
25 | * | ||
26 | * 12 - kernel code segment <==== new cacheline | ||
27 | * 13 - kernel data segment | ||
28 | * 14 - default user CS | ||
29 | * 15 - default user DS | ||
30 | * 16 - TSS | ||
31 | * 17 - LDT | ||
32 | * 18 - PNPBIOS support (16->32 gate) | ||
33 | * 19 - PNPBIOS support | ||
34 | * 20 - PNPBIOS support | ||
35 | * 21 - PNPBIOS support | ||
36 | * 22 - PNPBIOS support | ||
37 | * 23 - APM BIOS support | ||
38 | * 24 - APM BIOS support | ||
39 | * 25 - APM BIOS support | ||
40 | * | ||
41 | * 26 - ESPFIX small SS | ||
42 | * 27 - per-cpu [ offset to per-cpu data area ] | ||
43 | * 28 - unused | ||
44 | * 29 - unused | ||
45 | * 30 - unused | ||
46 | * 31 - TSS for double fault handler | ||
47 | */ | ||
48 | #define GDT_ENTRY_TLS_ENTRIES 3 | ||
49 | #define GDT_ENTRY_TLS_MIN 6 | ||
50 | #define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1) | ||
51 | |||
52 | #define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8) | ||
53 | |||
54 | #define GDT_ENTRY_DEFAULT_USER_CS 14 | ||
55 | #define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS * 8 + 3) | ||
56 | |||
57 | #define GDT_ENTRY_DEFAULT_USER_DS 15 | ||
58 | #define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS * 8 + 3) | ||
59 | |||
60 | #define GDT_ENTRY_KERNEL_BASE 12 | ||
61 | |||
62 | #define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE + 0) | ||
63 | #define __KERNEL_CS (GDT_ENTRY_KERNEL_CS * 8) | ||
64 | |||
65 | #define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE + 1) | ||
66 | #define __KERNEL_DS (GDT_ENTRY_KERNEL_DS * 8) | ||
67 | |||
68 | #define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE + 4) | ||
69 | #define GDT_ENTRY_LDT (GDT_ENTRY_KERNEL_BASE + 5) | ||
70 | |||
71 | #define GDT_ENTRY_PNPBIOS_BASE (GDT_ENTRY_KERNEL_BASE + 6) | ||
72 | #define GDT_ENTRY_APMBIOS_BASE (GDT_ENTRY_KERNEL_BASE + 11) | ||
73 | |||
74 | #define GDT_ENTRY_ESPFIX_SS (GDT_ENTRY_KERNEL_BASE + 14) | ||
75 | #define __ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8) | ||
76 | |||
77 | #define GDT_ENTRY_PERCPU (GDT_ENTRY_KERNEL_BASE + 15) | ||
78 | #ifdef CONFIG_SMP | ||
79 | #define __KERNEL_PERCPU (GDT_ENTRY_PERCPU * 8) | ||
80 | #else | ||
81 | #define __KERNEL_PERCPU 0 | ||
82 | #endif | ||
83 | |||
84 | #define GDT_ENTRY_DOUBLEFAULT_TSS 31 | ||
85 | |||
86 | /* | ||
87 | * The GDT has 32 entries | ||
88 | */ | ||
89 | #define GDT_ENTRIES 32 | ||
90 | #define GDT_SIZE (GDT_ENTRIES * 8) | ||
91 | |||
92 | /* Simple and small GDT entries for booting only */ | ||
93 | |||
94 | #define GDT_ENTRY_BOOT_CS 2 | ||
95 | #define __BOOT_CS (GDT_ENTRY_BOOT_CS * 8) | ||
96 | |||
97 | #define GDT_ENTRY_BOOT_DS (GDT_ENTRY_BOOT_CS + 1) | ||
98 | #define __BOOT_DS (GDT_ENTRY_BOOT_DS * 8) | ||
99 | |||
100 | /* The PnP BIOS entries in the GDT */ | ||
101 | #define GDT_ENTRY_PNPBIOS_CS32 (GDT_ENTRY_PNPBIOS_BASE + 0) | ||
102 | #define GDT_ENTRY_PNPBIOS_CS16 (GDT_ENTRY_PNPBIOS_BASE + 1) | ||
103 | #define GDT_ENTRY_PNPBIOS_DS (GDT_ENTRY_PNPBIOS_BASE + 2) | ||
104 | #define GDT_ENTRY_PNPBIOS_TS1 (GDT_ENTRY_PNPBIOS_BASE + 3) | ||
105 | #define GDT_ENTRY_PNPBIOS_TS2 (GDT_ENTRY_PNPBIOS_BASE + 4) | ||
106 | |||
107 | /* The PnP BIOS selectors */ | ||
108 | #define PNP_CS32 (GDT_ENTRY_PNPBIOS_CS32 * 8) /* segment for calling fn */ | ||
109 | #define PNP_CS16 (GDT_ENTRY_PNPBIOS_CS16 * 8) /* code segment for BIOS */ | ||
110 | #define PNP_DS (GDT_ENTRY_PNPBIOS_DS * 8) /* data segment for BIOS */ | ||
111 | #define PNP_TS1 (GDT_ENTRY_PNPBIOS_TS1 * 8) /* transfer data segment */ | ||
112 | #define PNP_TS2 (GDT_ENTRY_PNPBIOS_TS2 * 8) /* another data segment */ | ||
113 | |||
114 | /* | ||
115 | * The interrupt descriptor table has room for 256 idt's, | ||
116 | * the global descriptor table is dependent on the number | ||
117 | * of tasks we can have.. | ||
118 | */ | ||
119 | #define IDT_ENTRIES 256 | ||
120 | |||
121 | /* Bottom two bits of selector give the ring privilege level */ | ||
122 | #define SEGMENT_RPL_MASK 0x3 | ||
123 | /* Bit 2 is table indicator (LDT/GDT) */ | ||
124 | #define SEGMENT_TI_MASK 0x4 | ||
125 | |||
126 | /* User mode is privilege level 3 */ | ||
127 | #define USER_RPL 0x3 | ||
128 | /* LDT segment has TI set, GDT has it cleared */ | ||
129 | #define SEGMENT_LDT 0x4 | ||
130 | #define SEGMENT_GDT 0x0 | ||
131 | |||
132 | #ifndef CONFIG_PARAVIRT | ||
133 | #define get_kernel_rpl() 0 | ||
134 | #endif | ||
135 | /* | ||
136 | * Matching rules for certain types of segments. | ||
137 | */ | ||
138 | |||
139 | /* Matches only __KERNEL_CS, ignoring PnP / USER / APM segments */ | ||
140 | #define SEGMENT_IS_KERNEL_CODE(x) (((x) & 0xfc) == GDT_ENTRY_KERNEL_CS * 8) | ||
141 | |||
142 | /* Matches __KERNEL_CS and __USER_CS (they must be 2 entries apart) */ | ||
143 | #define SEGMENT_IS_FLAT_CODE(x) (((x) & 0xec) == GDT_ENTRY_KERNEL_CS * 8) | ||
144 | |||
145 | /* Matches PNP_CS32 and PNP_CS16 (they must be consecutive) */ | ||
146 | #define SEGMENT_IS_PNP_CODE(x) (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8) | ||
147 | |||
148 | #endif | ||