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/*
41 * Don't change these structures unless you change the corresponding assembly code
42 * which is in lowmem_vectors.s
43 */
44
45/*
46 *	This is where we put constants, pointers, and data areas that must be accessed
47 *	quickly through assembler.  They are designed to be accessed directly with
48 *	absolute addresses, not via a base register.  This is a global area, and not
49 *	per processor.
50 */
51
52#pragma pack(4)		/* Make sure the structure stays as we defined it */
53typedef struct lowglo {
54
55	unsigned char	lgVerCode[8];		/* 0x2000 System verification code */
56	unsigned long long lgZero;		/* 0x2008 Double constant 0 */
57	uint32_t	lgRsv010;		/* 0x2010 Reserved */
58	uint32_t	lgCHUDXNUfnStart;	/* 0x2014 CHUD XNU function glue
59						 * table */
60	uint32_t	lgRsv018;		/* 0x2018 Reserved */
61	uint32_t	lgVersion;		/* 0x201C Pointer to kernel version string */
62	uint32_t	lgRsv020[280];		/* 0X2020 Reserved */
63	uint32_t	lgKmodptr;		/* 0x2480 Pointer to kmod, debugging aid */
64	uint32_t	lgTransOff;		/* 0x2484 Pointer to kdp_trans_off, debugging aid */
65	uint32_t	lgReadIO;		/* 0x2488 Pointer to kdp_read_io, debugging aid */
66	uint32_t	lgDevSlot1;		/* 0x248C For developer use */
67	uint32_t	lgDevSlot2;		/* 0x2490 For developer use */
68	uint32_t	lgOSVersion;		/* 0x2494 Pointer to OS version string */
69	uint32_t	lgRebootFlag;		/* 0x2498 Pointer to debugger reboot trigger */
70	uint32_t	lgRsv49C[729];		/* 0x549C Reserved - push to 1 page */
71} lowglo;
72#pragma pack()
73extern lowglo lowGlo;
74#endif /* _LOW_MEMORY_GLOBALS_H_ */
75