1*94d3b452SApple OSS Distributions/* 2*94d3b452SApple OSS Distributions * Copyright (c) 2007-2021 Apple Inc. All rights reserved. 3*94d3b452SApple OSS Distributions * 4*94d3b452SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*94d3b452SApple OSS Distributions * 6*94d3b452SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*94d3b452SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*94d3b452SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*94d3b452SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*94d3b452SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*94d3b452SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*94d3b452SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*94d3b452SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*94d3b452SApple OSS Distributions * 15*94d3b452SApple OSS Distributions * Please obtain a copy of the License at 16*94d3b452SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*94d3b452SApple OSS Distributions * 18*94d3b452SApple OSS Distributions * The Original Code and all software distributed under the License are 19*94d3b452SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*94d3b452SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*94d3b452SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*94d3b452SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*94d3b452SApple OSS Distributions * Please see the License for the specific language governing rights and 24*94d3b452SApple OSS Distributions * limitations under the License. 25*94d3b452SApple OSS Distributions * 26*94d3b452SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*94d3b452SApple OSS Distributions */ 28*94d3b452SApple OSS Distributions#include <arm64/asm.h> 29*94d3b452SApple OSS Distributions#include <arm64/proc_reg.h> 30*94d3b452SApple OSS Distributions#include "assym.s" 31*94d3b452SApple OSS Distributions 32*94d3b452SApple OSS Distributions#if defined(__arm64__) 33*94d3b452SApple OSS Distributions/* We're fine, use adrp, add */ 34*94d3b452SApple OSS Distributions#else 35*94d3b452SApple OSS Distributions#error Unknown architecture. 36*94d3b452SApple OSS Distributions#endif 37*94d3b452SApple OSS Distributions 38*94d3b452SApple OSS Distributions .section __BOOTDATA, __data // Aligned data 39*94d3b452SApple OSS Distributions 40*94d3b452SApple OSS Distributions .align 14 41*94d3b452SApple OSS Distributions 42*94d3b452SApple OSS Distributions .globl EXT(intstack_low_guard) 43*94d3b452SApple OSS DistributionsLEXT(intstack_low_guard) 44*94d3b452SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 45*94d3b452SApple OSS Distributions 46*94d3b452SApple OSS Distributions /* IRQ stack */ 47*94d3b452SApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 48*94d3b452SApple OSS DistributionsLEXT(intstack) 49*94d3b452SApple OSS Distributions .space (INTSTACK_SIZE_NUM) 50*94d3b452SApple OSS Distributions .globl EXT(intstack_top) 51*94d3b452SApple OSS DistributionsLEXT(intstack_top) 52*94d3b452SApple OSS Distributions 53*94d3b452SApple OSS Distributions .globl EXT(intstack_high_guard) 54*94d3b452SApple OSS DistributionsLEXT(intstack_high_guard) 55*94d3b452SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 56*94d3b452SApple OSS Distributions 57*94d3b452SApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 58*94d3b452SApple OSS Distributions 59*94d3b452SApple OSS Distributions#ifdef __arm64__ 60*94d3b452SApple OSS Distributions .global EXT(excepstack) 61*94d3b452SApple OSS DistributionsLEXT(excepstack) 62*94d3b452SApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 63*94d3b452SApple OSS Distributions .globl EXT(excepstack_top) 64*94d3b452SApple OSS DistributionsLEXT(excepstack_top) 65*94d3b452SApple OSS Distributions 66*94d3b452SApple OSS Distributions .globl EXT(excepstack_high_guard) 67*94d3b452SApple OSS DistributionsLEXT(excepstack_high_guard) 68*94d3b452SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 69*94d3b452SApple OSS Distributions 70*94d3b452SApple OSS Distributions#endif 71*94d3b452SApple OSS Distributions 72*94d3b452SApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 73*94d3b452SApple OSS Distributions .global EXT(kd_early_buffer) 74*94d3b452SApple OSS Distributions .align 14 75*94d3b452SApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 76*94d3b452SApple OSS Distributions .space 16*1024,0 77*94d3b452SApple OSS Distributions 78*94d3b452SApple OSS Distributions .section __DATA, __data // Aligned data 79*94d3b452SApple OSS Distributions .align 3 // unsigned long long aligned Section 80*94d3b452SApple OSS Distributions .globl EXT(RTClockData) 81*94d3b452SApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 82*94d3b452SApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 83*94d3b452SApple OSS Distributions 84*94d3b452SApple OSS Distributions#if TRASH_VFP_ON_SAVE 85*94d3b452SApple OSS Distributions .align 4 86*94d3b452SApple OSS Distributions .globl EXT(vfptrash_data) 87*94d3b452SApple OSS DistributionsLEXT(vfptrash_data) 88*94d3b452SApple OSS Distributions .fill 64, 4, 0xca55e77e 89*94d3b452SApple OSS Distributions#endif 90*94d3b452SApple OSS Distributions 91*94d3b452SApple OSS Distributions#if __arm64__ 92*94d3b452SApple OSS Distributions 93*94d3b452SApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 94*94d3b452SApple OSS Distributions#if CONFIG_SPTM 95*94d3b452SApple OSS Distributions .section __DATA_SPTM, __const 96*94d3b452SApple OSS Distributions .align 14 97*94d3b452SApple OSS Distributions /* reserve a page for xnu-CTRR covered SPTM data */ 98*94d3b452SApple OSS Distributions .space 16*1024,0 99*94d3b452SApple OSS Distributions#else 100*94d3b452SApple OSS Distributions .section __DATA, __const 101*94d3b452SApple OSS Distributions .align 14 102*94d3b452SApple OSS Distributions#endif /* CONFIG_SPTM */ 103*94d3b452SApple OSS Distributions/* reserve space for read only page tables */ 104*94d3b452SApple OSS DistributionsLEXT(ropagetable_begin) 105*94d3b452SApple OSS Distributions#if XNU_TARGET_OS_OSX 106*94d3b452SApple OSS Distributions // A big auxKC might need more page tables, especially because 107*94d3b452SApple OSS Distributions // it's not block mapped. 108*94d3b452SApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 109*94d3b452SApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 110*94d3b452SApple OSS Distributions .space 18*16*1024,0 111*94d3b452SApple OSS Distributions#elif KASAN 112*94d3b452SApple OSS Distributions .space 16*16*1024,0 113*94d3b452SApple OSS Distributions#else 114*94d3b452SApple OSS Distributions .space 14*16*1024,0 115*94d3b452SApple OSS Distributions#endif 116*94d3b452SApple OSS Distributions#else 117*94d3b452SApple OSS DistributionsLEXT(ropagetable_begin) 118*94d3b452SApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 119*94d3b452SApple OSS Distributions 120*94d3b452SApple OSS DistributionsLEXT(ropagetable_end) 121*94d3b452SApple OSS Distributions 122*94d3b452SApple OSS Distributions .globl EXT(ropagetable_begin) 123*94d3b452SApple OSS Distributions .globl EXT(ropagetable_end) 124*94d3b452SApple OSS Distributions#endif /* __arm64__ */ 125*94d3b452SApple OSS Distributions 126*94d3b452SApple OSS Distributions/* vim: set ts=4: */ 127