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1.1 root 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: */
26:
27: #ifndef __XEN_PUBLIC_ELFNOTE_H__
28: #define __XEN_PUBLIC_ELFNOTE_H__
29:
30: /*
31: * The notes should live in a PT_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: */
40:
41: /*
42: * NAME=VALUE pair (string).
43: */
44: #define XEN_ELFNOTE_INFO 0
45:
46: /*
47: * The virtual address of the entry point (numeric).
48: *
49: * LEGACY: VIRT_ENTRY
50: */
51: #define XEN_ELFNOTE_ENTRY 1
52:
53: /* The virtual address of the hypercall transfer page (numeric).
54: *
55: * LEGACY: HYPERCALL_PAGE. (n.b. legacy value is a physical page
56: * number not a virtual address)
57: */
58: #define XEN_ELFNOTE_HYPERCALL_PAGE 2
59:
60: /* The virtual address where the kernel image should be mapped (numeric).
61: *
62: * Defaults to 0.
63: *
64: * LEGACY: VIRT_BASE
65: */
66: #define XEN_ELFNOTE_VIRT_BASE 3
67:
68: /*
69: * The offset of the ELF paddr field from the acutal required
70: * psuedo-physical address (numeric).
71: *
72: * This is used to maintain backwards compatibility with older kernels
73: * which wrote __PAGE_OFFSET into that field. This field defaults to 0
74: * if not present.
75: *
76: * LEGACY: ELF_PADDR_OFFSET. (n.b. legacy default is VIRT_BASE)
77: */
78: #define XEN_ELFNOTE_PADDR_OFFSET 4
79:
80: /*
81: * The version of Xen that we work with (string).
82: *
83: * LEGACY: XEN_VER
84: */
85: #define XEN_ELFNOTE_XEN_VERSION 5
86:
87: /*
88: * The name of the guest operating system (string).
89: *
90: * LEGACY: GUEST_OS
91: */
92: #define XEN_ELFNOTE_GUEST_OS 6
93:
94: /*
95: * The version of the guest operating system (string).
96: *
97: * LEGACY: GUEST_VER
98: */
99: #define XEN_ELFNOTE_GUEST_VERSION 7
100:
101: /*
102: * The loader type (string).
103: *
104: * LEGACY: LOADER
105: */
106: #define XEN_ELFNOTE_LOADER 8
107:
108: /*
109: * The kernel supports PAE (x86/32 only, string = "yes", "no" or
110: * "bimodal").
111: *
112: * For compatibility with Xen 3.0.3 and earlier the "bimodal" setting
113: * may be given as "yes,bimodal" which will cause older Xen to treat
114: * this kernel as PAE.
115: *
116: * LEGACY: PAE (n.b. The legacy interface included a provision to
117: * indicate 'extended-cr3' support allowing L3 page tables to be
118: * placed above 4G. It is assumed that any kernel new enough to use
119: * these ELF notes will include this and therefore "yes" here is
120: * equivalent to "yes[entended-cr3]" in the __xen_guest interface.
121: */
122: #define XEN_ELFNOTE_PAE_MODE 9
123:
124: /*
125: * The features supported/required by this kernel (string).
126: *
127: * The string must consist of a list of feature names (as given in
128: * features.h, without the "XENFEAT_" prefix) separated by '|'
129: * characters. If a feature is required for the kernel to function
130: * then the feature name must be preceded by a '!' character.
131: *
132: * LEGACY: FEATURES
133: */
134: #define XEN_ELFNOTE_FEATURES 10
135:
136: /*
137: * The kernel requires the symbol table to be loaded (string = "yes" or "no")
138: * LEGACY: BSD_SYMTAB (n.b. The legacy treated the presence or absence
139: * of this string as a boolean flag rather than requiring "yes" or
140: * "no".
141: */
142: #define XEN_ELFNOTE_BSD_SYMTAB 11
143:
144: /*
145: * The lowest address the hypervisor hole can begin at (numeric).
146: *
147: * This must not be set higher than HYPERVISOR_VIRT_START. Its presence
148: * also indicates to the hypervisor that the kernel can deal with the
149: * hole starting at a higher address.
150: */
151: #define XEN_ELFNOTE_HV_START_LOW 12
152:
153: /*
154: * List of maddr_t-sized mask/value pairs describing how to recognize
155: * (non-present) L1 page table entries carrying valid MFNs (numeric).
156: */
157: #define XEN_ELFNOTE_L1_MFN_VALID 13
158:
159: /*
160: * Whether or not the guest supports cooperative suspend cancellation.
161: */
162: #define XEN_ELFNOTE_SUSPEND_CANCEL 14
163:
164: /*
165: * The number of the highest elfnote defined.
166: */
167: #define XEN_ELFNOTE_MAX XEN_ELFNOTE_SUSPEND_CANCEL
168:
169: /*
170: * System information exported through crash notes.
171: *
172: * The kexec / kdump code will create one XEN_ELFNOTE_CRASH_INFO
173: * note in case of a system crash. This note will contain various
174: * information about the system, see xen/include/xen/elfcore.h.
175: */
176: #define XEN_ELFNOTE_CRASH_INFO 0x1000001
177:
178: /*
179: * System registers exported through crash notes.
180: *
181: * The kexec / kdump code will create one XEN_ELFNOTE_CRASH_REGS
182: * note per cpu in case of a system crash. This note is architecture
183: * specific and will contain registers not saved in the "CORE" note.
184: * See xen/include/xen/elfcore.h for more information.
185: */
186: #define XEN_ELFNOTE_CRASH_REGS 0x1000002
187:
188:
189: /*
190: * xen dump-core none note.
191: * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_NONE
192: * in its dump file to indicate that the file is xen dump-core
193: * file. This note doesn't have any other information.
194: * See tools/libxc/xc_core.h for more information.
195: */
196: #define XEN_ELFNOTE_DUMPCORE_NONE 0x2000000
197:
198: /*
199: * xen dump-core header note.
200: * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_HEADER
201: * in its dump file.
202: * See tools/libxc/xc_core.h for more information.
203: */
204: #define XEN_ELFNOTE_DUMPCORE_HEADER 0x2000001
205:
206: /*
207: * xen dump-core xen version note.
208: * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_XEN_VERSION
209: * in its dump file. It contains the xen version obtained via the
210: * XENVER hypercall.
211: * See tools/libxc/xc_core.h for more information.
212: */
213: #define XEN_ELFNOTE_DUMPCORE_XEN_VERSION 0x2000002
214:
215: /*
216: * xen dump-core format version note.
217: * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_FORMAT_VERSION
218: * in its dump file. It contains a format version identifier.
219: * See tools/libxc/xc_core.h for more information.
220: */
221: #define XEN_ELFNOTE_DUMPCORE_FORMAT_VERSION 0x2000003
222:
223: #endif /* __XEN_PUBLIC_ELFNOTE_H__ */
224:
225: /*
226: * Local variables:
227: * mode: C
228: * c-set-style: "BSD"
229: * c-basic-offset: 4
230: * tab-width: 4
231: * indent-tabs-mode: nil
232: * End:
233: */
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