ia64/xen-unstable

view xen/include/public/elfnote.h @ 12938:b58670602d35

[POWERPC][XEN] Builtin cmdline dependency rule
Rebuild cmdline.o when the user changes the CMDLINE=X argument passed to
the make invocation. I couldn't find an example of another project that
handles this case properly, so I came up with this.
Signed-off-by: Amos Waterland <apw@us.ibm.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
author Hollis Blanchard <hollisb@us.ibm.com>
date Thu Oct 05 15:48:26 2006 -0500 (2006-10-05)
parents f6b7ae6ed504
children c988f781817d
line source
1 /******************************************************************************
2 * elfnote.h
3 *
4 * Definitions used for the Xen ELF notes.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Copyright (c) 2006, Ian Campbell, XenSource Ltd.
25 */
27 #ifndef __XEN_PUBLIC_ELFNOTE_H__
28 #define __XEN_PUBLIC_ELFNOTE_H__
30 /*
31 * The notes should live in a SHT_NOTE segment and have "Xen" in the
32 * name field.
33 *
34 * Numeric types are either 4 or 8 bytes depending on the content of
35 * the desc field.
36 *
37 * LEGACY indicated the fields in the legacy __xen_guest string which
38 * this a note type replaces.
39 */
41 /*
42 * NAME=VALUE pair (string).
43 *
44 * LEGACY: FEATURES and PAE
45 */
46 #define XEN_ELFNOTE_INFO 0
48 /*
49 * The virtual address of the entry point (numeric).
50 *
51 * LEGACY: VIRT_ENTRY
52 */
53 #define XEN_ELFNOTE_ENTRY 1
55 /* The virtual address of the hypercall transfer page (numeric).
56 *
57 * LEGACY: HYPERCALL_PAGE. (n.b. legacy value is a physical page
58 * number not a virtual address)
59 */
60 #define XEN_ELFNOTE_HYPERCALL_PAGE 2
62 /* The virtual address where the kernel image should be mapped (numeric).
63 *
64 * Defaults to 0.
65 *
66 * LEGACY: VIRT_BASE
67 */
68 #define XEN_ELFNOTE_VIRT_BASE 3
70 /*
71 * The offset of the ELF paddr field from the acutal required
72 * psuedo-physical address (numeric).
73 *
74 * This is used to maintain backwards compatibility with older kernels
75 * which wrote __PAGE_OFFSET into that field. This field defaults to 0
76 * if not present.
77 *
78 * LEGACY: ELF_PADDR_OFFSET. (n.b. legacy default is VIRT_BASE)
79 */
80 #define XEN_ELFNOTE_PADDR_OFFSET 4
82 /*
83 * The version of Xen that we work with (string).
84 *
85 * LEGACY: XEN_VER
86 */
87 #define XEN_ELFNOTE_XEN_VERSION 5
89 /*
90 * The name of the guest operating system (string).
91 *
92 * LEGACY: GUEST_OS
93 */
94 #define XEN_ELFNOTE_GUEST_OS 6
96 /*
97 * The version of the guest operating system (string).
98 *
99 * LEGACY: GUEST_VER
100 */
101 #define XEN_ELFNOTE_GUEST_VERSION 7
103 /*
104 * The loader type (string).
105 *
106 * LEGACY: LOADER
107 */
108 #define XEN_ELFNOTE_LOADER 8
110 /*
111 * The kernel supports PAE (x86/32 only, string = "yes" or "no").
112 *
113 * LEGACY: PAE (n.b. The legacy interface included a provision to
114 * indicate 'extended-cr3' support allowing L3 page tables to be
115 * placed above 4G. It is assumed that any kernel new enough to use
116 * these ELF notes will include this and therefore "yes" here is
117 * equivalent to "yes[entended-cr3]" in the __xen_guest interface.
118 */
119 #define XEN_ELFNOTE_PAE_MODE 9
121 /*
122 * The features supported/required by this kernel (string).
123 *
124 * The string must consist of a list of feature names (as given in
125 * features.h, without the "XENFEAT_" prefix) separated by '|'
126 * characters. If a feature is required for the kernel to function
127 * then the feature name must be preceded by a '!' character.
128 *
129 * LEGACY: FEATURES
130 */
131 #define XEN_ELFNOTE_FEATURES 10
133 /*
134 * The kernel requires the symbol table to be loaded (string = "yes" or "no")
135 * LEGACY: BSD_SYMTAB (n.b. The legacy treated the presence or absence
136 * of this string as a boolean flag rather than requiring "yes" or
137 * "no".
138 */
139 #define XEN_ELFNOTE_BSD_SYMTAB 11
141 /*
142 * The lowest address the hypervisor hole can begin at (numeric).
143 *
144 * This must not be set higher than HYPERVISOR_VIRT_START. Its presence
145 * also indicates to the hypervisor that the kernel can deal with the
146 * hole starting at a higher address.
147 */
148 #define XEN_ELFNOTE_HV_START_LOW 12
150 #endif /* __XEN_PUBLIC_ELFNOTE_H__ */
152 /*
153 * Local variables:
154 * mode: C
155 * c-set-style: "BSD"
156 * c-basic-offset: 4
157 * tab-width: 4
158 * indent-tabs-mode: nil
159 * End:
160 */