[apple/xnu.git] / osfmk / arm / data.s

/*
 * Copyright (c) 2007-2009 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
#include <arm/asm.h>
#include <arm/proc_reg.h>
#include "assym.s"

#if defined(__arm__)
#include "globals_asm.h"
#elif defined(__arm64__)
/* We're fine, use adrp, add */
#else
#error Unknown architecture.
#endif

	.section __BOOTDATA, __data					// Aligned data

	.align 14 

	.globl EXT(intstack_low_guard)
LEXT(intstack_low_guard)
	.space (PAGE_MAX_SIZE_NUM)

	/* IRQ stack */
	.globl  EXT(intstack)						// Boot processor IRQ stack
LEXT(intstack)
	.space	(INTSTACK_SIZE_NUM)
	.globl  EXT(intstack_top)
LEXT(intstack_top)

	.globl EXT(intstack_high_guard)
LEXT(intstack_high_guard)
	.space (PAGE_MAX_SIZE_NUM)

/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */

#ifndef __arm64__

	.globl  EXT(fiqstack)						// Boot processor FIQ stack
LEXT(fiqstack)
	.space	(FIQSTACK_SIZE_NUM)
	.globl  EXT(fiqstack_top)					// Boot processor FIQ stack top
LEXT(fiqstack_top)

	.globl EXT(fiqstack_high_guard)
LEXT(fiqstack_high_guard)
	.space (PAGE_MAX_SIZE_NUM)

#else

	.global EXT(excepstack)
LEXT(excepstack)
	.space	(EXCEPSTACK_SIZE_NUM)
	.globl	EXT(excepstack_top)
LEXT(excepstack_top)

	.globl EXT(excepstack_high_guard)
LEXT(excepstack_high_guard)
	.space (PAGE_MAX_SIZE_NUM)

#endif

// Must align to 16K here, due to <rdar://problem/33268668>
        .global EXT(kd_early_buffer)
        .align 14
LEXT(kd_early_buffer) // space for kdebug's early event buffer
        .space 16*1024,0

	.section __DATA, __data						// Aligned data
	.align	3							// unsigned long long aligned Section
	.globl	EXT(RTClockData)
LEXT(RTClockData)							// Real Time clock area
	.space	RTCLOCKDataSize_NUM,0					// (filled with 0s)

#if TRASH_VFP_ON_SAVE
	.align  4
	.globl  EXT(vfptrash_data)
LEXT(vfptrash_data)
	.fill   64, 4, 0xca55e77e
#endif

#if __arm64__
        .section __DATA, __const

#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR)
/* reserve space for read only page tables */
        .align 14
LEXT(ropagetable_begin)
        .space 14*16*1024,0
#else
LEXT(ropagetable_begin)
#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */

LEXT(ropagetable_end)

        .globl EXT(ropagetable_begin)
        .globl EXT(ropagetable_end)
#endif /* __arm64__ */

/* vim: set ts=4: */
Commit	Line	Data
5ba3f43e A	1	/*
	2	* Copyright (c) 2007-2009 Apple 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	#include <arm/asm.h>
	29	#include <arm/proc_reg.h>
	30	#include "assym.s"
	31
	32	#if defined(__arm__)
	33	#include "globals_asm.h"
	34	#elif defined(__arm64__)
	35	/* We're fine, use adrp, add */
	36	#else
	37	#error Unknown architecture.
	38	#endif
	39
d9a64523	40	.section __BOOTDATA, __data // Aligned data
5ba3f43e	41
d9a64523	42	.align 14
5ba3f43e	43
d9a64523 A	44	.globl EXT(intstack_low_guard)
	45	LEXT(intstack_low_guard)
	46	.space (PAGE_MAX_SIZE_NUM)
5ba3f43e A	47
	48	/* IRQ stack */
	49	.globl EXT(intstack) // Boot processor IRQ stack
	50	LEXT(intstack)
d9a64523	51	.space (INTSTACK_SIZE_NUM)
5ba3f43e A	52	.globl EXT(intstack_top)
	53	LEXT(intstack_top)
	54
d9a64523 A	55	.globl EXT(intstack_high_guard)
	56	LEXT(intstack_high_guard)
	57	.space (PAGE_MAX_SIZE_NUM)
5ba3f43e	58
d9a64523 A	59	/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */
	60
	61	#ifndef __arm64__
5ba3f43e A	62
	63	.globl EXT(fiqstack) // Boot processor FIQ stack
	64	LEXT(fiqstack)
d9a64523	65	.space (FIQSTACK_SIZE_NUM)
5ba3f43e A	66	.globl EXT(fiqstack_top) // Boot processor FIQ stack top
	67	LEXT(fiqstack_top)
	68
d9a64523 A	69	.globl EXT(fiqstack_high_guard)
	70	LEXT(fiqstack_high_guard)
	71	.space (PAGE_MAX_SIZE_NUM)
	72
	73	#else
	74
	75	.global EXT(excepstack)
	76	LEXT(excepstack)
	77	.space (EXCEPSTACK_SIZE_NUM)
	78	.globl EXT(excepstack_top)
	79	LEXT(excepstack_top)
	80
	81	.globl EXT(excepstack_high_guard)
	82	LEXT(excepstack_high_guard)
	83	.space (PAGE_MAX_SIZE_NUM)
	84
	85	#endif
	86
	87	// Must align to 16K here, due to <rdar://problem/33268668>
	88	.global EXT(kd_early_buffer)
	89	.align 14
	90	LEXT(kd_early_buffer) // space for kdebug's early event buffer
	91	.space 16*1024,0
	92
	93	.section __DATA, __data // Aligned data
5ba3f43e A	94	.align 3 // unsigned long long aligned Section
	95	.globl EXT(RTClockData)
	96	LEXT(RTClockData) // Real Time clock area
	97	.space RTCLOCKDataSize_NUM,0 // (filled with 0s)
	98
	99	#if TRASH_VFP_ON_SAVE
	100	.align 4
	101	.globl EXT(vfptrash_data)
	102	LEXT(vfptrash_data)
	103	.fill 64, 4, 0xca55e77e
	104	#endif
	105
5ba3f43e A	106	#if __arm64__
	107	.section __DATA, __const
	108
c6bf4f31	109	#if defined(KERNEL_INTEGRITY_KTRR) \|\| defined(KERNEL_INTEGRITY_CTRR)
5ba3f43e A	110	/* reserve space for read only page tables */
	111	.align 14
	112	LEXT(ropagetable_begin)
d9a64523	113	.space 14161024,0
5ba3f43e A	114	#else
5ba3f43e A	115	LEXT(ropagetable_begin)
c6bf4f31	116	#endif /* defined(KERNEL_INTEGRITY_KTRR) \|\| defined(KERNEL_INTEGRITY_CTRR) */
5ba3f43e A	117
	118	LEXT(ropagetable_end)
	119
	120	.globl EXT(ropagetable_begin)
	121	.globl EXT(ropagetable_end)
	122	#endif /* __arm64__ */
	123
	124	/* vim: set ts=4: */