1*0f4c859eSApple OSS Distributions/* 2*0f4c859eSApple OSS Distributions * Copyright (c) 2007-2021 Apple Inc. All rights reserved. 3*0f4c859eSApple OSS Distributions * 4*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*0f4c859eSApple OSS Distributions * 6*0f4c859eSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*0f4c859eSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*0f4c859eSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*0f4c859eSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*0f4c859eSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*0f4c859eSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*0f4c859eSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*0f4c859eSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*0f4c859eSApple OSS Distributions * 15*0f4c859eSApple OSS Distributions * Please obtain a copy of the License at 16*0f4c859eSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*0f4c859eSApple OSS Distributions * 18*0f4c859eSApple OSS Distributions * The Original Code and all software distributed under the License are 19*0f4c859eSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*0f4c859eSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*0f4c859eSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*0f4c859eSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*0f4c859eSApple OSS Distributions * Please see the License for the specific language governing rights and 24*0f4c859eSApple OSS Distributions * limitations under the License. 25*0f4c859eSApple OSS Distributions * 26*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*0f4c859eSApple OSS Distributions */ 28*0f4c859eSApple OSS Distributions#include <arm64/asm.h> 29*0f4c859eSApple OSS Distributions#include <arm64/proc_reg.h> 30*0f4c859eSApple OSS Distributions#include "assym.s" 31*0f4c859eSApple OSS Distributions 32*0f4c859eSApple OSS Distributions#if defined(__arm64__) 33*0f4c859eSApple OSS Distributions/* We're fine, use adrp, add */ 34*0f4c859eSApple OSS Distributions#else 35*0f4c859eSApple OSS Distributions#error Unknown architecture. 36*0f4c859eSApple OSS Distributions#endif 37*0f4c859eSApple OSS Distributions 38*0f4c859eSApple OSS Distributions .section __BOOTDATA, __data // Aligned data 39*0f4c859eSApple OSS Distributions 40*0f4c859eSApple OSS Distributions .align 14 41*0f4c859eSApple OSS Distributions 42*0f4c859eSApple OSS Distributions .globl EXT(intstack_low_guard) 43*0f4c859eSApple OSS DistributionsLEXT(intstack_low_guard) 44*0f4c859eSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 45*0f4c859eSApple OSS Distributions 46*0f4c859eSApple OSS Distributions /* IRQ stack */ 47*0f4c859eSApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 48*0f4c859eSApple OSS DistributionsLEXT(intstack) 49*0f4c859eSApple OSS Distributions .space (INTSTACK_SIZE_NUM) 50*0f4c859eSApple OSS Distributions .globl EXT(intstack_top) 51*0f4c859eSApple OSS DistributionsLEXT(intstack_top) 52*0f4c859eSApple OSS Distributions 53*0f4c859eSApple OSS Distributions .globl EXT(intstack_high_guard) 54*0f4c859eSApple OSS DistributionsLEXT(intstack_high_guard) 55*0f4c859eSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 56*0f4c859eSApple OSS Distributions 57*0f4c859eSApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 58*0f4c859eSApple OSS Distributions 59*0f4c859eSApple OSS Distributions#ifdef __arm64__ 60*0f4c859eSApple OSS Distributions .global EXT(excepstack) 61*0f4c859eSApple OSS DistributionsLEXT(excepstack) 62*0f4c859eSApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 63*0f4c859eSApple OSS Distributions .globl EXT(excepstack_top) 64*0f4c859eSApple OSS DistributionsLEXT(excepstack_top) 65*0f4c859eSApple OSS Distributions 66*0f4c859eSApple OSS Distributions .globl EXT(excepstack_high_guard) 67*0f4c859eSApple OSS DistributionsLEXT(excepstack_high_guard) 68*0f4c859eSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 69*0f4c859eSApple OSS Distributions 70*0f4c859eSApple OSS Distributions#endif 71*0f4c859eSApple OSS Distributions 72*0f4c859eSApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 73*0f4c859eSApple OSS Distributions .global EXT(kd_early_buffer) 74*0f4c859eSApple OSS Distributions .align 14 75*0f4c859eSApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 76*0f4c859eSApple OSS Distributions .space 16*1024,0 77*0f4c859eSApple OSS Distributions 78*0f4c859eSApple OSS Distributions .section __DATA, __data // Aligned data 79*0f4c859eSApple OSS Distributions .align 3 // unsigned long long aligned Section 80*0f4c859eSApple OSS Distributions .globl EXT(RTClockData) 81*0f4c859eSApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 82*0f4c859eSApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 83*0f4c859eSApple OSS Distributions 84*0f4c859eSApple OSS Distributions#if TRASH_VFP_ON_SAVE 85*0f4c859eSApple OSS Distributions .align 4 86*0f4c859eSApple OSS Distributions .globl EXT(vfptrash_data) 87*0f4c859eSApple OSS DistributionsLEXT(vfptrash_data) 88*0f4c859eSApple OSS Distributions .fill 64, 4, 0xca55e77e 89*0f4c859eSApple OSS Distributions#endif 90*0f4c859eSApple OSS Distributions 91*0f4c859eSApple OSS Distributions#if __arm64__ 92*0f4c859eSApple OSS Distributions 93*0f4c859eSApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 94*0f4c859eSApple OSS Distributions .section __DATA, __const 95*0f4c859eSApple OSS Distributions .align 14 96*0f4c859eSApple OSS Distributions/* reserve space for read only page tables */ 97*0f4c859eSApple OSS DistributionsLEXT(ropagetable_begin) 98*0f4c859eSApple OSS Distributions#if XNU_TARGET_OS_OSX 99*0f4c859eSApple OSS Distributions // A big auxKC might need more page tables, especially because 100*0f4c859eSApple OSS Distributions // it's not block mapped. 101*0f4c859eSApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 102*0f4c859eSApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 103*0f4c859eSApple OSS Distributions .space 18*16*1024,0 104*0f4c859eSApple OSS Distributions#elif KASAN 105*0f4c859eSApple OSS Distributions .space 16*16*1024,0 106*0f4c859eSApple OSS Distributions#else 107*0f4c859eSApple OSS Distributions .space 14*16*1024,0 108*0f4c859eSApple OSS Distributions#endif 109*0f4c859eSApple OSS Distributions#else 110*0f4c859eSApple OSS DistributionsLEXT(ropagetable_begin) 111*0f4c859eSApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 112*0f4c859eSApple OSS Distributions 113*0f4c859eSApple OSS DistributionsLEXT(ropagetable_end) 114*0f4c859eSApple OSS Distributions 115*0f4c859eSApple OSS Distributions .globl EXT(ropagetable_begin) 116*0f4c859eSApple OSS Distributions .globl EXT(ropagetable_end) 117*0f4c859eSApple OSS Distributions#endif /* __arm64__ */ 118*0f4c859eSApple OSS Distributions 119*0f4c859eSApple OSS Distributions/* vim: set ts=4: */ 120