/* 

 * kvmdump.h

 *

 * Copyright (C) 2009, 2010 David Anderson

 * Copyright (C) 2009, 2010 Red Hat, Inc. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

struct mapinfo_trailer {

	uint64_t map_start_offset;

	uint64_t phys_base;

	uint32_t cpu_version_id;

	uint32_t ram_version_id;

	uint64_t checksum;

	uint64_t magic;

};

struct register_set {

	uint32_t cs;

	uint32_t ss;

	uint32_t ds;

	uint32_t es;

	uint32_t fs;

	uint32_t gs;

	uint64_t ip;

	uint64_t flags;

	uint64_t regs[16];

};

#define REGS_MAGIC    (0xfeedbeefdeadbabeULL)

#define MAPFILE_MAGIC (0xfeedbabedeadbeefULL)

#define CHKSUM_SIZE   (4096)

#define KVMDUMP_CACHED_PAGES 32

struct kvmdump_data {

	ulong flags;

	FILE *ofp;

	FILE *vmp;

	int mapfd;

	int vmfd;

	struct mapinfo_trailer mapinfo;

        /* page cache */

        struct kvm_page_cache_hdr {

                uint64_t paddr;

               	char *bufptr;

        } page_cache[KVMDUMP_CACHED_PAGES];

	union {

		char *curbufptr;

		unsigned char compressed;

	} un;

        int evict_index;    

	ulong accesses;

	ulong hit_count;

	ulong compresses;

	uint64_t kvbase;

	ulong *debug;

	uint32_t cpu_devices;

	struct register_set *registers;

	uint64_t iohole;

};

#define TMPFILE              (0x2)

#define MAPFILE              (0x4)

#define MAPFILE_FOUND        (0x8)

#define MAPFILE_APPENDED    (0x10)

#define NO_PHYS_BASE        (0x20)

#define KVMHOST_32          (0x40)

#define KVMHOST_64          (0x80)

#define REGS_FROM_DUMPFILE (0x100)

#define REGS_FROM_MAPFILE  (0x200)

#define REGS_NOT_AVAIL     (0x400)

extern struct kvmdump_data *kvm;

#undef dprintf

#define dprintf(x...)   do { if (*(kvm->debug)) fprintf(kvm->ofp, x); } while (0)

int store_mapfile_offset(uint64_t, off_t *);

int load_mapfile_offset(uint64_t, off_t *);

struct qemu_device_x86;

int kvmdump_regs_store(uint32_t, struct qemu_device_x86 *);

#define KVMDUMP_REGS_START   (NR_CPUS+1)

#define KVMDUMP_REGS_END     (NR_CPUS+2)

#define UPPER_32_BITS    (0xffffffff00000000ULL)

enum CPU_REG {

	R_EAX,

	R_ECX,

	R_EDX,

	R_EBX,

	R_ESP,

	R_EBP,

	R_ESI,

	R_EDI,

	R_GP_MAX,

};