1*1b191cb5SApple OSS Distributions/* 2*1b191cb5SApple OSS Distributions * Copyright (c) 2007-2021 Apple Inc. All rights reserved. 3*1b191cb5SApple OSS Distributions * 4*1b191cb5SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*1b191cb5SApple OSS Distributions * 6*1b191cb5SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*1b191cb5SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*1b191cb5SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*1b191cb5SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*1b191cb5SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*1b191cb5SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*1b191cb5SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*1b191cb5SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*1b191cb5SApple OSS Distributions * 15*1b191cb5SApple OSS Distributions * Please obtain a copy of the License at 16*1b191cb5SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*1b191cb5SApple OSS Distributions * 18*1b191cb5SApple OSS Distributions * The Original Code and all software distributed under the License are 19*1b191cb5SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*1b191cb5SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*1b191cb5SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*1b191cb5SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*1b191cb5SApple OSS Distributions * Please see the License for the specific language governing rights and 24*1b191cb5SApple OSS Distributions * limitations under the License. 25*1b191cb5SApple OSS Distributions * 26*1b191cb5SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*1b191cb5SApple OSS Distributions */ 28*1b191cb5SApple OSS Distributions#include <arm64/asm.h> 29*1b191cb5SApple OSS Distributions#include <arm64/proc_reg.h> 30*1b191cb5SApple OSS Distributions#include "assym.s" 31*1b191cb5SApple OSS Distributions 32*1b191cb5SApple OSS Distributions#if defined(__arm64__) 33*1b191cb5SApple OSS Distributions/* We're fine, use adrp, add */ 34*1b191cb5SApple OSS Distributions#else 35*1b191cb5SApple OSS Distributions#error Unknown architecture. 36*1b191cb5SApple OSS Distributions#endif 37*1b191cb5SApple OSS Distributions 38*1b191cb5SApple OSS Distributions .section __BOOTDATA, __data // Aligned data 39*1b191cb5SApple OSS Distributions 40*1b191cb5SApple OSS Distributions .align 14 41*1b191cb5SApple OSS Distributions 42*1b191cb5SApple OSS Distributions .globl EXT(intstack_low_guard) 43*1b191cb5SApple OSS DistributionsLEXT(intstack_low_guard) 44*1b191cb5SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 45*1b191cb5SApple OSS Distributions 46*1b191cb5SApple OSS Distributions /* IRQ stack */ 47*1b191cb5SApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 48*1b191cb5SApple OSS DistributionsLEXT(intstack) 49*1b191cb5SApple OSS Distributions .space (INTSTACK_SIZE_NUM) 50*1b191cb5SApple OSS Distributions .globl EXT(intstack_top) 51*1b191cb5SApple OSS DistributionsLEXT(intstack_top) 52*1b191cb5SApple OSS Distributions 53*1b191cb5SApple OSS Distributions .globl EXT(intstack_high_guard) 54*1b191cb5SApple OSS DistributionsLEXT(intstack_high_guard) 55*1b191cb5SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 56*1b191cb5SApple OSS Distributions 57*1b191cb5SApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 58*1b191cb5SApple OSS Distributions 59*1b191cb5SApple OSS Distributions#ifdef __arm64__ 60*1b191cb5SApple OSS Distributions .global EXT(excepstack) 61*1b191cb5SApple OSS DistributionsLEXT(excepstack) 62*1b191cb5SApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 63*1b191cb5SApple OSS Distributions .globl EXT(excepstack_top) 64*1b191cb5SApple OSS DistributionsLEXT(excepstack_top) 65*1b191cb5SApple OSS Distributions 66*1b191cb5SApple OSS Distributions .globl EXT(excepstack_high_guard) 67*1b191cb5SApple OSS DistributionsLEXT(excepstack_high_guard) 68*1b191cb5SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 69*1b191cb5SApple OSS Distributions 70*1b191cb5SApple OSS Distributions#endif 71*1b191cb5SApple OSS Distributions 72*1b191cb5SApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 73*1b191cb5SApple OSS Distributions .global EXT(kd_early_buffer) 74*1b191cb5SApple OSS Distributions .align 14 75*1b191cb5SApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 76*1b191cb5SApple OSS Distributions .space 16*1024,0 77*1b191cb5SApple OSS Distributions 78*1b191cb5SApple OSS Distributions .section __DATA, __data // Aligned data 79*1b191cb5SApple OSS Distributions .align 3 // unsigned long long aligned Section 80*1b191cb5SApple OSS Distributions .globl EXT(RTClockData) 81*1b191cb5SApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 82*1b191cb5SApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 83*1b191cb5SApple OSS Distributions 84*1b191cb5SApple OSS Distributions#if TRASH_VFP_ON_SAVE 85*1b191cb5SApple OSS Distributions .align 4 86*1b191cb5SApple OSS Distributions .globl EXT(vfptrash_data) 87*1b191cb5SApple OSS DistributionsLEXT(vfptrash_data) 88*1b191cb5SApple OSS Distributions .fill 64, 4, 0xca55e77e 89*1b191cb5SApple OSS Distributions#endif 90*1b191cb5SApple OSS Distributions 91*1b191cb5SApple OSS Distributions#if __arm64__ 92*1b191cb5SApple OSS Distributions .section __DATA, __const 93*1b191cb5SApple OSS Distributions 94*1b191cb5SApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 95*1b191cb5SApple OSS Distributions/* reserve space for read only page tables */ 96*1b191cb5SApple OSS Distributions .align 14 97*1b191cb5SApple OSS DistributionsLEXT(ropagetable_begin) 98*1b191cb5SApple OSS Distributions#if XNU_TARGET_OS_OSX 99*1b191cb5SApple OSS Distributions // A big auxKC might need more page tables, especially because 100*1b191cb5SApple OSS Distributions // it's not block mapped. 101*1b191cb5SApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 102*1b191cb5SApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 103*1b191cb5SApple OSS Distributions .space 18*16*1024,0 104*1b191cb5SApple OSS Distributions#elif KASAN 105*1b191cb5SApple OSS Distributions .space 16*16*1024,0 106*1b191cb5SApple OSS Distributions#else 107*1b191cb5SApple OSS Distributions .space 14*16*1024,0 108*1b191cb5SApple OSS Distributions#endif 109*1b191cb5SApple OSS Distributions#else 110*1b191cb5SApple OSS DistributionsLEXT(ropagetable_begin) 111*1b191cb5SApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 112*1b191cb5SApple OSS Distributions 113*1b191cb5SApple OSS DistributionsLEXT(ropagetable_end) 114*1b191cb5SApple OSS Distributions 115*1b191cb5SApple OSS Distributions .globl EXT(ropagetable_begin) 116*1b191cb5SApple OSS Distributions .globl EXT(ropagetable_end) 117*1b191cb5SApple OSS Distributions#endif /* __arm64__ */ 118*1b191cb5SApple OSS Distributions 119*1b191cb5SApple OSS Distributions/* vim: set ts=4: */ 120