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	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	/*
	50	* This is where we put constants, pointers, and data areas that must be accessed
	51	* quickly through assembler. They are designed to be accessed directly with
	52	* absolute addresses, not via a base register. This is a global area, and not
	53	* per processor.
	54	*/
	55
	56	#pragma pack(8) /* Make sure the structure stays as we defined it */
	57	typedef struct lowglo {
	58
	59	unsigned char lgVerCode[8]; /* 0xffffff8000002000 System verification code */
	60	uint64_t lgZero[2]; /* 0xffffff8000002008 Double constant 0 */
	61	uint64_t lgRsv010; /* 0xffffff8000002018 Reserved */
	62	uint64_t lgCHUDXNUfnStart; /* 0xffffff8000002020 CHUD XNU function glue table */
	63	uint64_t lgRsv018; /* 0xffffff8000002028 Reserved */
	64	uint64_t lgVersion; /* 0xffffff8000002030 Pointer to kernel version string */
	65	uint64_t lgRsv020[280]; /* 0xffffff8000002038 Reserved */
	66	uint64_t lgKmodptr; /* 0xffffff80000028f8 Pointer to kmod, debugging aid */
	67	uint64_t lgTransOff; /* 0xffffff8000002900 Pointer to kdp_trans_off, debugging aid */
	68	uint64_t lgReadIO; /* 0xffffff8000002908 Pointer to kdp_read_io, debugging aid */
	69	uint64_t lgDevSlot1; /* 0xffffff8000002910 For developer use */
	70	uint64_t lgDevSlot2; /* 0xffffff8000002918 For developer use */
	71	uint64_t lgOSVersion; /* 0xffffff8000002920 Pointer to OS version string */
	72	uint64_t lgRebootFlag; /* 0xffffff8000002928 Pointer to debugger reboot trigger */
	73	uint64_t lgManualPktAddr; /* 0xffffff8000002930 Pointer to manual packet structure */
	74
	75	uint64_t lgRsv49C[217]; /* 0xffffff8000002938 Reserved - push to 1 page */
	76	} lowglo;
	77	#pragma pack()
	78	extern lowglo lowGlo;
	79	#endif /* _LOW_MEMORY_GLOBALS_H_ */