1*42e22086SApple OSS Distributions/* 2*42e22086SApple OSS Distributions * Copyright (c) 2007-2021 Apple Inc. All rights reserved. 3*42e22086SApple OSS Distributions * 4*42e22086SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*42e22086SApple OSS Distributions * 6*42e22086SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*42e22086SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*42e22086SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*42e22086SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*42e22086SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*42e22086SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*42e22086SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*42e22086SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*42e22086SApple OSS Distributions * 15*42e22086SApple OSS Distributions * Please obtain a copy of the License at 16*42e22086SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*42e22086SApple OSS Distributions * 18*42e22086SApple OSS Distributions * The Original Code and all software distributed under the License are 19*42e22086SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*42e22086SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*42e22086SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*42e22086SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*42e22086SApple OSS Distributions * Please see the License for the specific language governing rights and 24*42e22086SApple OSS Distributions * limitations under the License. 25*42e22086SApple OSS Distributions * 26*42e22086SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*42e22086SApple OSS Distributions */ 28*42e22086SApple OSS Distributions#include <arm64/asm.h> 29*42e22086SApple OSS Distributions#include <arm64/proc_reg.h> 30*42e22086SApple OSS Distributions#include "assym.s" 31*42e22086SApple OSS Distributions 32*42e22086SApple OSS Distributions#if defined(__arm64__) 33*42e22086SApple OSS Distributions/* We're fine, use adrp, add */ 34*42e22086SApple OSS Distributions#else 35*42e22086SApple OSS Distributions#error Unknown architecture. 36*42e22086SApple OSS Distributions#endif 37*42e22086SApple OSS Distributions 38*42e22086SApple OSS Distributions .section __BOOTDATA, __data // Aligned data 39*42e22086SApple OSS Distributions 40*42e22086SApple OSS Distributions .align 14 41*42e22086SApple OSS Distributions 42*42e22086SApple OSS Distributions .globl EXT(intstack_low_guard) 43*42e22086SApple OSS DistributionsLEXT(intstack_low_guard) 44*42e22086SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 45*42e22086SApple OSS Distributions 46*42e22086SApple OSS Distributions /* IRQ stack */ 47*42e22086SApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 48*42e22086SApple OSS DistributionsLEXT(intstack) 49*42e22086SApple OSS Distributions .space (INTSTACK_SIZE_NUM) 50*42e22086SApple OSS Distributions .globl EXT(intstack_top) 51*42e22086SApple OSS DistributionsLEXT(intstack_top) 52*42e22086SApple OSS Distributions 53*42e22086SApple OSS Distributions .globl EXT(intstack_high_guard) 54*42e22086SApple OSS DistributionsLEXT(intstack_high_guard) 55*42e22086SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 56*42e22086SApple OSS Distributions 57*42e22086SApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 58*42e22086SApple OSS Distributions 59*42e22086SApple OSS Distributions#ifdef __arm64__ 60*42e22086SApple OSS Distributions .global EXT(excepstack) 61*42e22086SApple OSS DistributionsLEXT(excepstack) 62*42e22086SApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 63*42e22086SApple OSS Distributions .globl EXT(excepstack_top) 64*42e22086SApple OSS DistributionsLEXT(excepstack_top) 65*42e22086SApple OSS Distributions 66*42e22086SApple OSS Distributions .globl EXT(excepstack_high_guard) 67*42e22086SApple OSS DistributionsLEXT(excepstack_high_guard) 68*42e22086SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 69*42e22086SApple OSS Distributions 70*42e22086SApple OSS Distributions#endif 71*42e22086SApple OSS Distributions 72*42e22086SApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 73*42e22086SApple OSS Distributions .global EXT(kd_early_buffer) 74*42e22086SApple OSS Distributions .align 14 75*42e22086SApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 76*42e22086SApple OSS Distributions .space 16*1024,0 77*42e22086SApple OSS Distributions 78*42e22086SApple OSS Distributions .section __DATA, __data // Aligned data 79*42e22086SApple OSS Distributions .align 3 // unsigned long long aligned Section 80*42e22086SApple OSS Distributions .globl EXT(RTClockData) 81*42e22086SApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 82*42e22086SApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 83*42e22086SApple OSS Distributions 84*42e22086SApple OSS Distributions#if TRASH_VFP_ON_SAVE 85*42e22086SApple OSS Distributions .align 4 86*42e22086SApple OSS Distributions .globl EXT(vfptrash_data) 87*42e22086SApple OSS DistributionsLEXT(vfptrash_data) 88*42e22086SApple OSS Distributions .fill 64, 4, 0xca55e77e 89*42e22086SApple OSS Distributions#endif 90*42e22086SApple OSS Distributions 91*42e22086SApple OSS Distributions#if __arm64__ 92*42e22086SApple OSS Distributions .section __DATA, __const 93*42e22086SApple OSS Distributions 94*42e22086SApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 95*42e22086SApple OSS Distributions/* reserve space for read only page tables */ 96*42e22086SApple OSS Distributions .align 14 97*42e22086SApple OSS DistributionsLEXT(ropagetable_begin) 98*42e22086SApple OSS Distributions#if XNU_TARGET_OS_OSX 99*42e22086SApple OSS Distributions // A big auxKC might need more page tables, especially because 100*42e22086SApple OSS Distributions // it's not block mapped. 101*42e22086SApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 102*42e22086SApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 103*42e22086SApple OSS Distributions .space 18*16*1024,0 104*42e22086SApple OSS Distributions#elif KASAN 105*42e22086SApple OSS Distributions .space 16*16*1024,0 106*42e22086SApple OSS Distributions#else 107*42e22086SApple OSS Distributions .space 14*16*1024,0 108*42e22086SApple OSS Distributions#endif 109*42e22086SApple OSS Distributions#else 110*42e22086SApple OSS DistributionsLEXT(ropagetable_begin) 111*42e22086SApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 112*42e22086SApple OSS Distributions 113*42e22086SApple OSS DistributionsLEXT(ropagetable_end) 114*42e22086SApple OSS Distributions 115*42e22086SApple OSS Distributions .globl EXT(ropagetable_begin) 116*42e22086SApple OSS Distributions .globl EXT(ropagetable_end) 117*42e22086SApple OSS Distributions#endif /* __arm64__ */ 118*42e22086SApple OSS Distributions 119*42e22086SApple OSS Distributions/* vim: set ts=4: */ 120