1/*
2 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29/*
30 * Header files for the Low Memory Globals (lg)
31 */
32#ifndef _LOW_MEMORY_GLOBALS_H_
33#define _LOW_MEMORY_GLOBALS_H_
34
35#include <mach/mach_types.h>
36#include <mach/vm_types.h>
37#include <mach/machine/vm_types.h>
38#include <mach/vm_prot.h>
39
40#ifndef __x86_64__
41#error Wrong architecture - this file is meant for x86_64
42#endif
43
44/*
45 * Don't change these structures unless you change the corresponding assembly code
46 * which is in lowmem_vectors.s
47 */
48
49#pragma pack(8) /* Make sure the structure stays as we defined it */
50typedef struct lowglo {
51
52 unsigned char lgVerCode[8]; /* 0xffffff8000002000 System verification code */
53 uint64_t lgZero; /* 0xffffff8000002008 Double constant 0 */
54 uint64_t lgStext; /* 0xffffff8000002010 Start of kernel text */
55 uint64_t lgRsv018; /* 0xffffff8000002018 Reserved */
56 uint64_t lgRsv020; /* 0xffffff8000002020 Reserved */
57 uint64_t lgRsv028; /* 0xffffff8000002028 Reserved */
58 uint64_t lgVersion; /* 0xffffff8000002030 Pointer to kernel version string */
59 uint64_t lgRsv038[280]; /* 0xffffff8000002038 Reserved */
60 uint64_t lgKmodptr; /* 0xffffff80000028f8 Pointer to kmod, debugging aid */
61 uint64_t lgTransOff; /* 0xffffff8000002900 Pointer to kdp_trans_off, debugging aid */
62 uint64_t lgReadIO; /* 0xffffff8000002908 Pointer to kdp_read_io, debugging aid */
63 uint64_t lgDevSlot1; /* 0xffffff8000002910 For developer use */
64 uint64_t lgDevSlot2; /* 0xffffff8000002918 For developer use */
65 uint64_t lgOSVersion; /* 0xffffff8000002920 Pointer to OS version string */
66 uint64_t lgRebootFlag; /* 0xffffff8000002928 Pointer to debugger reboot trigger */
67 uint64_t lgManualPktAddr; /* 0xffffff8000002930 Pointer to manual packet structure */
68
69 uint64_t lgRsv938[217]; /* 0xffffff8000002938 Reserved - push to 1 page */
70} lowglo;
71#pragma pack()
72extern lowglo lowGlo;
73#endif /* _LOW_MEMORY_GLOBALS_H_ */
74