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authorThomas Gleixner <tglx@linutronix.de>2007-10-11 05:20:03 -0400
committerThomas Gleixner <tglx@linutronix.de>2007-10-11 05:20:03 -0400
commit96a388de5dc53a8b234b3fd41f3ae2cedc9ffd42 (patch)
treed947a467aa2da3140279617bc4b9b101640d7bf4 /include/asm-x86/desc_defs.h
parent27bd0c955648646abf2a353a8371d28c37bcd982 (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/desc_defs.h')
-rw-r--r--include/asm-x86/desc_defs.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/include/asm-x86/desc_defs.h b/include/asm-x86/desc_defs.h
new file mode 100644
index 000000000000..089004070099
--- /dev/null
+++ b/include/asm-x86/desc_defs.h
@@ -0,0 +1,69 @@
1/* Written 2000 by Andi Kleen */
2#ifndef __ARCH_DESC_DEFS_H
3#define __ARCH_DESC_DEFS_H
4
5/*
6 * Segment descriptor structure definitions, usable from both x86_64 and i386
7 * archs.
8 */
9
10#ifndef __ASSEMBLY__
11
12#include <linux/types.h>
13
14// 8 byte segment descriptor
15struct desc_struct {
16 u16 limit0;
17 u16 base0;
18 unsigned base1 : 8, type : 4, s : 1, dpl : 2, p : 1;
19 unsigned limit : 4, avl : 1, l : 1, d : 1, g : 1, base2 : 8;
20} __attribute__((packed));
21
22struct n_desc_struct {
23 unsigned int a,b;
24};
25
26enum {
27 GATE_INTERRUPT = 0xE,
28 GATE_TRAP = 0xF,
29 GATE_CALL = 0xC,
30};
31
32// 16byte gate
33struct gate_struct {
34 u16 offset_low;
35 u16 segment;
36 unsigned ist : 3, zero0 : 5, type : 5, dpl : 2, p : 1;
37 u16 offset_middle;
38 u32 offset_high;
39 u32 zero1;
40} __attribute__((packed));
41
42#define PTR_LOW(x) ((unsigned long)(x) & 0xFFFF)
43#define PTR_MIDDLE(x) (((unsigned long)(x) >> 16) & 0xFFFF)
44#define PTR_HIGH(x) ((unsigned long)(x) >> 32)
45
46enum {
47 DESC_TSS = 0x9,
48 DESC_LDT = 0x2,
49};
50
51// LDT or TSS descriptor in the GDT. 16 bytes.
52struct ldttss_desc {
53 u16 limit0;
54 u16 base0;
55 unsigned base1 : 8, type : 5, dpl : 2, p : 1;
56 unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8;
57 u32 base3;
58 u32 zero1;
59} __attribute__((packed));
60
61struct desc_ptr {
62 unsigned short size;
63 unsigned long address;
64} __attribute__((packed)) ;
65
66
67#endif /* !__ASSEMBLY__ */
68
69#endif