1*aca3beaaSApple OSS Distributions/* 2*aca3beaaSApple OSS Distributions * Copyright (c) 2007-2021 Apple Inc. All rights reserved. 3*aca3beaaSApple OSS Distributions * 4*aca3beaaSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*aca3beaaSApple OSS Distributions * 6*aca3beaaSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*aca3beaaSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*aca3beaaSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*aca3beaaSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*aca3beaaSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*aca3beaaSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*aca3beaaSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*aca3beaaSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*aca3beaaSApple OSS Distributions * 15*aca3beaaSApple OSS Distributions * Please obtain a copy of the License at 16*aca3beaaSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*aca3beaaSApple OSS Distributions * 18*aca3beaaSApple OSS Distributions * The Original Code and all software distributed under the License are 19*aca3beaaSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*aca3beaaSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*aca3beaaSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*aca3beaaSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*aca3beaaSApple OSS Distributions * Please see the License for the specific language governing rights and 24*aca3beaaSApple OSS Distributions * limitations under the License. 25*aca3beaaSApple OSS Distributions * 26*aca3beaaSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*aca3beaaSApple OSS Distributions */ 28*aca3beaaSApple OSS Distributions#include <arm64/asm.h> 29*aca3beaaSApple OSS Distributions#include <arm64/proc_reg.h> 30*aca3beaaSApple OSS Distributions#include "assym.s" 31*aca3beaaSApple OSS Distributions 32*aca3beaaSApple OSS Distributions#if defined(__arm64__) 33*aca3beaaSApple OSS Distributions/* We're fine, use adrp, add */ 34*aca3beaaSApple OSS Distributions#else 35*aca3beaaSApple OSS Distributions#error Unknown architecture. 36*aca3beaaSApple OSS Distributions#endif 37*aca3beaaSApple OSS Distributions 38*aca3beaaSApple OSS Distributions .section __BOOTDATA, __data // Aligned data 39*aca3beaaSApple OSS Distributions 40*aca3beaaSApple OSS Distributions .align 14 41*aca3beaaSApple OSS Distributions 42*aca3beaaSApple OSS Distributions .globl EXT(intstack_low_guard) 43*aca3beaaSApple OSS DistributionsLEXT(intstack_low_guard) 44*aca3beaaSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 45*aca3beaaSApple OSS Distributions 46*aca3beaaSApple OSS Distributions /* IRQ stack */ 47*aca3beaaSApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 48*aca3beaaSApple OSS DistributionsLEXT(intstack) 49*aca3beaaSApple OSS Distributions .space (INTSTACK_SIZE_NUM) 50*aca3beaaSApple OSS Distributions .globl EXT(intstack_top) 51*aca3beaaSApple OSS DistributionsLEXT(intstack_top) 52*aca3beaaSApple OSS Distributions 53*aca3beaaSApple OSS Distributions .globl EXT(intstack_high_guard) 54*aca3beaaSApple OSS DistributionsLEXT(intstack_high_guard) 55*aca3beaaSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 56*aca3beaaSApple OSS Distributions 57*aca3beaaSApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 58*aca3beaaSApple OSS Distributions 59*aca3beaaSApple OSS Distributions#ifdef __arm64__ 60*aca3beaaSApple OSS Distributions .global EXT(excepstack) 61*aca3beaaSApple OSS DistributionsLEXT(excepstack) 62*aca3beaaSApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 63*aca3beaaSApple OSS Distributions .globl EXT(excepstack_top) 64*aca3beaaSApple OSS DistributionsLEXT(excepstack_top) 65*aca3beaaSApple OSS Distributions 66*aca3beaaSApple OSS Distributions .globl EXT(excepstack_high_guard) 67*aca3beaaSApple OSS DistributionsLEXT(excepstack_high_guard) 68*aca3beaaSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 69*aca3beaaSApple OSS Distributions 70*aca3beaaSApple OSS Distributions#endif 71*aca3beaaSApple OSS Distributions 72*aca3beaaSApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 73*aca3beaaSApple OSS Distributions .global EXT(kd_early_buffer) 74*aca3beaaSApple OSS Distributions .align 14 75*aca3beaaSApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 76*aca3beaaSApple OSS Distributions .space 16*1024,0 77*aca3beaaSApple OSS Distributions 78*aca3beaaSApple OSS Distributions .section __DATA, __data // Aligned data 79*aca3beaaSApple OSS Distributions .align 3 // unsigned long long aligned Section 80*aca3beaaSApple OSS Distributions .globl EXT(RTClockData) 81*aca3beaaSApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 82*aca3beaaSApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 83*aca3beaaSApple OSS Distributions 84*aca3beaaSApple OSS Distributions#if TRASH_VFP_ON_SAVE 85*aca3beaaSApple OSS Distributions .align 4 86*aca3beaaSApple OSS Distributions .globl EXT(vfptrash_data) 87*aca3beaaSApple OSS DistributionsLEXT(vfptrash_data) 88*aca3beaaSApple OSS Distributions .fill 64, 4, 0xca55e77e 89*aca3beaaSApple OSS Distributions#endif 90*aca3beaaSApple OSS Distributions 91*aca3beaaSApple OSS Distributions#if __arm64__ 92*aca3beaaSApple OSS Distributions .section __DATA, __const 93*aca3beaaSApple OSS Distributions 94*aca3beaaSApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 95*aca3beaaSApple OSS Distributions/* reserve space for read only page tables */ 96*aca3beaaSApple OSS Distributions .align 14 97*aca3beaaSApple OSS DistributionsLEXT(ropagetable_begin) 98*aca3beaaSApple OSS Distributions#if XNU_TARGET_OS_OSX 99*aca3beaaSApple OSS Distributions // A big auxKC might need more page tables, especially because 100*aca3beaaSApple OSS Distributions // it's not block mapped. 101*aca3beaaSApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 102*aca3beaaSApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 103*aca3beaaSApple OSS Distributions .space 18*16*1024,0 104*aca3beaaSApple OSS Distributions#elif KASAN 105*aca3beaaSApple OSS Distributions .space 16*16*1024,0 106*aca3beaaSApple OSS Distributions#else 107*aca3beaaSApple OSS Distributions .space 14*16*1024,0 108*aca3beaaSApple OSS Distributions#endif 109*aca3beaaSApple OSS Distributions#else 110*aca3beaaSApple OSS DistributionsLEXT(ropagetable_begin) 111*aca3beaaSApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 112*aca3beaaSApple OSS Distributions 113*aca3beaaSApple OSS DistributionsLEXT(ropagetable_end) 114*aca3beaaSApple OSS Distributions 115*aca3beaaSApple OSS Distributions .globl EXT(ropagetable_begin) 116*aca3beaaSApple OSS Distributions .globl EXT(ropagetable_end) 117*aca3beaaSApple OSS Distributions#endif /* __arm64__ */ 118*aca3beaaSApple OSS Distributions 119*aca3beaaSApple OSS Distributions/* vim: set ts=4: */ 120