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1/*
2 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * The contents of this file constitute Original Code as defined in and
7 * are subject to the Apple Public Source License Version 1.1 (the
8 * "License"). You may not use this file except in compliance with the
9 * License. Please obtain a copy of the License at
10 * http://www.apple.com/publicsource and read it before using this file.
11 *
12 * This Original Code and all software distributed under the License are
13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17 * License for the specific language governing rights and limitations
18 * under the License.
19 *
20 * @APPLE_LICENSE_HEADER_END@
21 */
22/*
23 * Header files for the Low Memory Globals (lg)
24 */
25#ifndef _LOW_MEMORY_GLOBALS_H_
26#define _LOW_MEMORY_GLOBALS_H_
27
28#include <mach/mach_types.h>
29#include <mach/vm_types.h>
30#include <mach/machine/vm_types.h>
31#include <mach/vm_prot.h>
32
33/*
34 * Don't change these structures unless you change the corresponding assembly code
35 * which is in lowmem_vectors.s
36 */
37
38/*
39 * This is where we put constants, pointers, and data areas that must be accessed
40 * quickly through assembler. They are designed to be accessed directly with
41 * absolute addresses, not via a base register. This is a global area, and not
42 * per processor.
43 */
44
45#pragma pack(4) /* Make sure the structure stays as we defined it */
46typedef struct lowglo {
47
48 unsigned char lgVerCode[8]; /* 0x2000 System verification code */
49 unsigned long long lgZero; /* 0x2008 Double constant 0 */
50 uint32_t lgRsv010[3]; /* 0x2010 Reserved */
51 uint32_t lgVersion; /* 0x201C Pointer to kernel version string */
52 uint32_t lgRsv020[280]; /* 0X2020 Reserved */
53 uint32_t lgKmodptr; /* 0x2480 Pointer to kmod, debugging aid */
54 uint32_t lgTransOff; /* 0x2484 Pointer to kdp_trans_off, debugging aid */
55 uint32_t lgRsv028; /* 0x2488 Reserved */
56 uint32_t lgDevSlot1; /* 0x248C For developer use */
57 uint32_t lgDevSlot2; /* 0x2490 For developer use */
58 uint32_t lgRsv494[731]; /* Reserved - push to 1 page */
59} lowglo;
60
61
62#endif /* _LOW_MEMORY_GLOBALS_H_ */