1/* 2 * Copyright (c) 2007-2021 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 <arm64/asm.h> 29#include <arm64/proc_reg.h> 30#include "assym.s" 31 32#if defined(__arm64__) 33/* We're fine, use adrp, add */ 34#else 35#error Unknown architecture. 36#endif 37 38 .section __BOOTDATA, __data // Aligned data 39 40 .align 14 41 42 .globl EXT(intstack_low_guard) 43LEXT(intstack_low_guard) 44 .space (PAGE_MAX_SIZE_NUM) 45 46 /* IRQ stack */ 47 .globl EXT(intstack) // Boot processor IRQ stack 48LEXT(intstack) 49 .space (INTSTACK_SIZE_NUM) 50 .globl EXT(intstack_top) 51LEXT(intstack_top) 52 53 .globl EXT(intstack_high_guard) 54LEXT(intstack_high_guard) 55 .space (PAGE_MAX_SIZE_NUM) 56 57/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 58 59#ifdef __arm64__ 60 .global EXT(excepstack) 61LEXT(excepstack) 62 .space (EXCEPSTACK_SIZE_NUM) 63 .globl EXT(excepstack_top) 64LEXT(excepstack_top) 65 66 .globl EXT(excepstack_high_guard) 67LEXT(excepstack_high_guard) 68 .space (PAGE_MAX_SIZE_NUM) 69 70#endif 71 72// Must align to 16K here, due to <rdar://problem/33268668> 73 .global EXT(kd_early_buffer) 74 .align 14 75LEXT(kd_early_buffer) // space for kdebug's early event buffer 76 .space 16*1024,0 77 78 .section __DATA, __data // Aligned data 79 .align 3 // unsigned long long aligned Section 80 .globl EXT(RTClockData) 81LEXT(RTClockData) // Real Time clock area 82 .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 83 84#if TRASH_VFP_ON_SAVE 85 .align 4 86 .globl EXT(vfptrash_data) 87LEXT(vfptrash_data) 88 .fill 64, 4, 0xca55e77e 89#endif 90 91#if __arm64__ 92 .section __DATA, __const 93 94#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 95/* reserve space for read only page tables */ 96 .align 14 97LEXT(ropagetable_begin) 98#if XNU_TARGET_OS_OSX 99 // A big auxKC might need more page tables, especially because 100 // it's not block mapped. 101 // Note that we don't distuinguish between KASAN or not: With 102 // a KASAN kernel, the effective auxKC limit is smaller. 103 .space 18*16*1024,0 104#elif KASAN 105 .space 16*16*1024,0 106#else 107 .space 14*16*1024,0 108#endif 109#else 110LEXT(ropagetable_begin) 111#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 112 113LEXT(ropagetable_end) 114 115 .globl EXT(ropagetable_begin) 116 .globl EXT(ropagetable_end) 117#endif /* __arm64__ */ 118 119/* vim: set ts=4: */ 120