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 40 .section __BOOTDATA, __data // Aligned data 41 42 .align 14 43 44 .globl EXT(intstack_low_guard) 45LEXT(intstack_low_guard) 46 .space (PAGE_MAX_SIZE_NUM) 47 48 /* IRQ stack */ 49 .globl EXT(intstack) // Boot processor IRQ stack 50LEXT(intstack) 51 .space (INTSTACK_SIZE_NUM) 52 .globl EXT(intstack_top) 53LEXT(intstack_top) 54 55 .globl EXT(intstack_high_guard) 56LEXT(intstack_high_guard) 57 .space (PAGE_MAX_SIZE_NUM) 58 59/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 60 61#ifndef __arm64__ 62 63 .globl EXT(fiqstack) // Boot processor FIQ stack 64LEXT(fiqstack) 65 .space (FIQSTACK_SIZE_NUM) 66 .globl EXT(fiqstack_top) // Boot processor FIQ stack top 67LEXT(fiqstack_top) 68 69 .globl EXT(fiqstack_high_guard) 70LEXT(fiqstack_high_guard) 71 .space (PAGE_MAX_SIZE_NUM) 72 73#else 74 75 .global EXT(excepstack) 76LEXT(excepstack) 77 .space (EXCEPSTACK_SIZE_NUM) 78 .globl EXT(excepstack_top) 79LEXT(excepstack_top) 80 81 .globl EXT(excepstack_high_guard) 82LEXT(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 90LEXT(kd_early_buffer) // space for kdebug's early event buffer 91 .space 16*1024,0 92 93 .section __DATA, __data // Aligned data 94 .align 3 // unsigned long long aligned Section 95 .globl EXT(RTClockData) 96LEXT(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) 102LEXT(vfptrash_data) 103 .fill 64, 4, 0xca55e77e 104#endif 105 106#if __arm64__ 107 .section __DATA, __const 108 109#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 110/* reserve space for read only page tables */ 111 .align 14 112LEXT(ropagetable_begin) 113#if XNU_TARGET_OS_OSX 114 // A big auxKC might need more page tables, especially because 115 // it's not block mapped. 116 // Note that we don't distuinguish between KASAN or not: With 117 // a KASAN kernel, the effective auxKC limit is smaller. 118 .space 18*16*1024,0 119#elif KASAN 120 .space 16*16*1024,0 121#else 122 .space 14*16*1024,0 123#endif 124#else 125LEXT(ropagetable_begin) 126#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 127 128LEXT(ropagetable_end) 129 130 .globl EXT(ropagetable_begin) 131 .globl EXT(ropagetable_end) 132#endif /* __arm64__ */ 133 134/* vim: set ts=4: */ 135