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authorJeremy Fitzhardinge <jeremy@xensource.com>2007-07-17 21:37:04 -0400
committerJeremy Fitzhardinge <jeremy@goop.org>2007-07-18 11:47:42 -0400
commita42089dd358a7673a0a23126589a9029e57c2049 (patch)
treeaa076610832f5cdb0ee209c42ea7e40d54534ef4 /include/xen/interface/elfnote.h
parent24037a8b69dbf15bfed8fd42a2a2e442d7b0395b (diff)
xen: Add Xen interface header files
Add Xen interface header files. These are taken fairly directly from the Xen tree, but somewhat rearranged to suit the kernel's conventions. Define macros and inline functions for doing hypercalls into the hypervisor. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ian Pratt <ian.pratt@xensource.com> Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk> Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Diffstat (limited to 'include/xen/interface/elfnote.h')
-rw-r--r--include/xen/interface/elfnote.h133
1 files changed, 133 insertions, 0 deletions
diff --git a/include/xen/interface/elfnote.h b/include/xen/interface/elfnote.h
new file mode 100644
index 000000000000..a64d3df5bd95
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+++ b/include/xen/interface/elfnote.h
@@ -0,0 +1,133 @@
1/******************************************************************************
2 * elfnote.h
3 *
4 * Definitions used for the Xen ELF notes.
5 *
6 * Copyright (c) 2006, Ian Campbell, XenSource Ltd.
7 */
8
9#ifndef __XEN_PUBLIC_ELFNOTE_H__
10#define __XEN_PUBLIC_ELFNOTE_H__
11
12/*
13 * The notes should live in a SHT_NOTE segment and have "Xen" in the
14 * name field.
15 *
16 * Numeric types are either 4 or 8 bytes depending on the content of
17 * the desc field.
18 *
19 * LEGACY indicated the fields in the legacy __xen_guest string which
20 * this a note type replaces.
21 */
22
23/*
24 * NAME=VALUE pair (string).
25 *
26 * LEGACY: FEATURES and PAE
27 */
28#define XEN_ELFNOTE_INFO 0
29
30/*
31 * The virtual address of the entry point (numeric).
32 *
33 * LEGACY: VIRT_ENTRY
34 */
35#define XEN_ELFNOTE_ENTRY 1
36
37/* The virtual address of the hypercall transfer page (numeric).
38 *
39 * LEGACY: HYPERCALL_PAGE. (n.b. legacy value is a physical page
40 * number not a virtual address)
41 */
42#define XEN_ELFNOTE_HYPERCALL_PAGE 2
43
44/* The virtual address where the kernel image should be mapped (numeric).
45 *
46 * Defaults to 0.
47 *
48 * LEGACY: VIRT_BASE
49 */
50#define XEN_ELFNOTE_VIRT_BASE 3
51
52/*
53 * The offset of the ELF paddr field from the acutal required
54 * psuedo-physical address (numeric).
55 *
56 * This is used to maintain backwards compatibility with older kernels
57 * which wrote __PAGE_OFFSET into that field. This field defaults to 0
58 * if not present.
59 *
60 * LEGACY: ELF_PADDR_OFFSET. (n.b. legacy default is VIRT_BASE)
61 */
62#define XEN_ELFNOTE_PADDR_OFFSET 4
63
64/*
65 * The version of Xen that we work with (string).
66 *
67 * LEGACY: XEN_VER
68 */
69#define XEN_ELFNOTE_XEN_VERSION 5
70
71/*
72 * The name of the guest operating system (string).
73 *
74 * LEGACY: GUEST_OS
75 */
76#define XEN_ELFNOTE_GUEST_OS 6
77
78/*
79 * The version of the guest operating system (string).
80 *
81 * LEGACY: GUEST_VER
82 */
83#define XEN_ELFNOTE_GUEST_VERSION 7
84
85/*
86 * The loader type (string).
87 *
88 * LEGACY: LOADER
89 */
90#define XEN_ELFNOTE_LOADER 8
91
92/*
93 * The kernel supports PAE (x86/32 only, string = "yes" or "no").
94 *
95 * LEGACY: PAE (n.b. The legacy interface included a provision to
96 * indicate 'extended-cr3' support allowing L3 page tables to be
97 * placed above 4G. It is assumed that any kernel new enough to use
98 * these ELF notes will include this and therefore "yes" here is
99 * equivalent to "yes[entended-cr3]" in the __xen_guest interface.
100 */
101#define XEN_ELFNOTE_PAE_MODE 9
102
103/*
104 * The features supported/required by this kernel (string).
105 *
106 * The string must consist of a list of feature names (as given in
107 * features.h, without the "XENFEAT_" prefix) separated by '|'
108 * characters. If a feature is required for the kernel to function
109 * then the feature name must be preceded by a '!' character.
110 *
111 * LEGACY: FEATURES
112 */
113#define XEN_ELFNOTE_FEATURES 10
114
115/*
116 * The kernel requires the symbol table to be loaded (string = "yes" or "no")
117 * LEGACY: BSD_SYMTAB (n.b. The legacy treated the presence or absence
118 * of this string as a boolean flag rather than requiring "yes" or
119 * "no".
120 */
121#define XEN_ELFNOTE_BSD_SYMTAB 11
122
123#endif /* __XEN_PUBLIC_ELFNOTE_H__ */
124
125/*
126 * Local variables:
127 * mode: C
128 * c-set-style: "BSD"
129 * c-basic-offset: 4
130 * tab-width: 4
131 * indent-tabs-mode: nil
132 * End:
133 */