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authorLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 11:59:11 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 11:59:11 -0500
commit4522d58275f124105819723e24e912c8e5bf3cdd (patch)
treeb92c29014fadffe049c1925676037f0092b8d112 /include/asm-x86_64/desc_defs.h
parent6cf24f031bc97cb5a7c9df3b6e73c45b628b2b28 (diff)
parent64a26a731235b59c9d73bbe82c1f896d57400d37 (diff)
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (156 commits) [PATCH] x86-64: Export smp_call_function_single [PATCH] i386: Clean up smp_tune_scheduling() [PATCH] unwinder: move .eh_frame to RODATA [PATCH] unwinder: fully support linker generated .eh_frame_hdr section [PATCH] x86-64: don't use set_irq_regs() [PATCH] x86-64: check vector in setup_ioapic_dest to verify if need setup_IO_APIC_irq [PATCH] x86-64: Make ix86 default to HIGHMEM4G instead of NOHIGHMEM [PATCH] i386: replace kmalloc+memset with kzalloc [PATCH] x86-64: remove remaining pc98 code [PATCH] x86-64: remove unused variable [PATCH] x86-64: Fix constraints in atomic_add_return() [PATCH] x86-64: fix asm constraints in i386 atomic_add_return [PATCH] x86-64: Correct documentation for bzImage protocol v2.05 [PATCH] x86-64: replace kmalloc+memset with kzalloc in MTRR code [PATCH] x86-64: Fix numaq build error [PATCH] x86-64: include/asm-x86_64/cpufeature.h isn't a userspace header [PATCH] unwinder: Add debugging output to the Dwarf2 unwinder [PATCH] x86-64: Clarify error message in GART code [PATCH] x86-64: Fix interrupt race in idle callback (3rd try) [PATCH] x86-64: Remove unwind stack pointer alignment forcing again ... Fixed conflict in include/linux/uaccess.h manually Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64/desc_defs.h')
-rw-r--r--include/asm-x86_64/desc_defs.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/include/asm-x86_64/desc_defs.h b/include/asm-x86_64/desc_defs.h
new file mode 100644
index 000000000000..089004070099
--- /dev/null
+++ b/include/asm-x86_64/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