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Annotation of Gnu-Mach/xen/public/elfnote.h, revision 1.1

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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