1*d4514f0bSApple OSS Distributions/* 2*d4514f0bSApple OSS Distributions * Copyright (c) 2007-2021 Apple Inc. All rights reserved. 3*d4514f0bSApple OSS Distributions * 4*d4514f0bSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*d4514f0bSApple OSS Distributions * 6*d4514f0bSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*d4514f0bSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*d4514f0bSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*d4514f0bSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*d4514f0bSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*d4514f0bSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*d4514f0bSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*d4514f0bSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*d4514f0bSApple OSS Distributions * 15*d4514f0bSApple OSS Distributions * Please obtain a copy of the License at 16*d4514f0bSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*d4514f0bSApple OSS Distributions * 18*d4514f0bSApple OSS Distributions * The Original Code and all software distributed under the License are 19*d4514f0bSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*d4514f0bSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*d4514f0bSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*d4514f0bSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*d4514f0bSApple OSS Distributions * Please see the License for the specific language governing rights and 24*d4514f0bSApple OSS Distributions * limitations under the License. 25*d4514f0bSApple OSS Distributions * 26*d4514f0bSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*d4514f0bSApple OSS Distributions */ 28*d4514f0bSApple OSS Distributions#include <arm64/asm.h> 29*d4514f0bSApple OSS Distributions#include <arm64/proc_reg.h> 30*d4514f0bSApple OSS Distributions#include "assym.s" 31*d4514f0bSApple OSS Distributions 32*d4514f0bSApple OSS Distributions#if CONFIG_SPTM 33*d4514f0bSApple OSS Distributions#include <sptm/sptm_xnu.h> 34*d4514f0bSApple OSS Distributions#endif /* CONFIG_SPTM */ 35*d4514f0bSApple OSS Distributions 36*d4514f0bSApple OSS Distributions#if defined(__arm64__) 37*d4514f0bSApple OSS Distributions/* We're fine, use adrp, add */ 38*d4514f0bSApple OSS Distributions#else 39*d4514f0bSApple OSS Distributions#error Unknown architecture. 40*d4514f0bSApple OSS Distributions#endif 41*d4514f0bSApple OSS Distributions 42*d4514f0bSApple OSS Distributions .section __BOOTDATA, __data // Aligned data 43*d4514f0bSApple OSS Distributions 44*d4514f0bSApple OSS Distributions .align 14 45*d4514f0bSApple OSS Distributions 46*d4514f0bSApple OSS Distributions .globl EXT(intstack_low_guard) 47*d4514f0bSApple OSS DistributionsLEXT(intstack_low_guard) 48*d4514f0bSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 49*d4514f0bSApple OSS Distributions 50*d4514f0bSApple OSS Distributions /* IRQ stack */ 51*d4514f0bSApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 52*d4514f0bSApple OSS DistributionsLEXT(intstack) 53*d4514f0bSApple OSS Distributions .space (INTSTACK_SIZE_NUM) 54*d4514f0bSApple OSS Distributions .globl EXT(intstack_top) 55*d4514f0bSApple OSS DistributionsLEXT(intstack_top) 56*d4514f0bSApple OSS Distributions 57*d4514f0bSApple OSS Distributions .globl EXT(intstack_high_guard) 58*d4514f0bSApple OSS DistributionsLEXT(intstack_high_guard) 59*d4514f0bSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 60*d4514f0bSApple OSS Distributions 61*d4514f0bSApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 62*d4514f0bSApple OSS Distributions 63*d4514f0bSApple OSS Distributions#ifdef __arm64__ 64*d4514f0bSApple OSS Distributions .global EXT(excepstack) 65*d4514f0bSApple OSS DistributionsLEXT(excepstack) 66*d4514f0bSApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 67*d4514f0bSApple OSS Distributions .globl EXT(excepstack_top) 68*d4514f0bSApple OSS DistributionsLEXT(excepstack_top) 69*d4514f0bSApple OSS Distributions 70*d4514f0bSApple OSS Distributions .globl EXT(excepstack_high_guard) 71*d4514f0bSApple OSS DistributionsLEXT(excepstack_high_guard) 72*d4514f0bSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 73*d4514f0bSApple OSS Distributions 74*d4514f0bSApple OSS Distributions#endif 75*d4514f0bSApple OSS Distributions 76*d4514f0bSApple OSS Distributions 77*d4514f0bSApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 78*d4514f0bSApple OSS Distributions .global EXT(kd_early_buffer) 79*d4514f0bSApple OSS Distributions .align 14 80*d4514f0bSApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 81*d4514f0bSApple OSS Distributions .space 16*1024,0 82*d4514f0bSApple OSS Distributions 83*d4514f0bSApple OSS Distributions .section __DATA, __data // Aligned data 84*d4514f0bSApple OSS Distributions .align 3 // unsigned long long aligned Section 85*d4514f0bSApple OSS Distributions .globl EXT(RTClockData) 86*d4514f0bSApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 87*d4514f0bSApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 88*d4514f0bSApple OSS Distributions 89*d4514f0bSApple OSS Distributions#if TRASH_VFP_ON_SAVE 90*d4514f0bSApple OSS Distributions .align 4 91*d4514f0bSApple OSS Distributions .globl EXT(vfptrash_data) 92*d4514f0bSApple OSS DistributionsLEXT(vfptrash_data) 93*d4514f0bSApple OSS Distributions .fill 64, 4, 0xca55e77e 94*d4514f0bSApple OSS Distributions#endif 95*d4514f0bSApple OSS Distributions 96*d4514f0bSApple OSS Distributions#if __arm64__ 97*d4514f0bSApple OSS Distributions 98*d4514f0bSApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 99*d4514f0bSApple OSS Distributions#if CONFIG_SPTM 100*d4514f0bSApple OSS Distributions .section __DATA_SPTM, __const 101*d4514f0bSApple OSS Distributions .align 14 102*d4514f0bSApple OSS Distributions /* reserve a page for xnu-CTRR covered SPTM data */ 103*d4514f0bSApple OSS Distributions .space 16*1024,0 104*d4514f0bSApple OSS Distributions#else 105*d4514f0bSApple OSS Distributions .section __DATA, __const 106*d4514f0bSApple OSS Distributions .align 14 107*d4514f0bSApple OSS Distributions#endif /* CONFIG_SPTM */ 108*d4514f0bSApple OSS Distributions/* reserve space for read only page tables */ 109*d4514f0bSApple OSS DistributionsLEXT(ropagetable_begin) 110*d4514f0bSApple OSS Distributions#if XNU_TARGET_OS_OSX 111*d4514f0bSApple OSS Distributions // A big auxKC might need more page tables, especially because 112*d4514f0bSApple OSS Distributions // it's not block mapped. 113*d4514f0bSApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 114*d4514f0bSApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 115*d4514f0bSApple OSS Distributions .space 20*16*1024,0 116*d4514f0bSApple OSS Distributions#elif KASAN 117*d4514f0bSApple OSS Distributions .space 16*16*1024,0 118*d4514f0bSApple OSS Distributions#else 119*d4514f0bSApple OSS Distributions .space 14*16*1024,0 120*d4514f0bSApple OSS Distributions#endif 121*d4514f0bSApple OSS Distributions#else 122*d4514f0bSApple OSS DistributionsLEXT(ropagetable_begin) 123*d4514f0bSApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 124*d4514f0bSApple OSS Distributions 125*d4514f0bSApple OSS DistributionsLEXT(ropagetable_end) 126*d4514f0bSApple OSS Distributions 127*d4514f0bSApple OSS Distributions .globl EXT(ropagetable_begin) 128*d4514f0bSApple OSS Distributions .globl EXT(ropagetable_end) 129*d4514f0bSApple OSS Distributions#endif /* __arm64__ */ 130*d4514f0bSApple OSS Distributions 131*d4514f0bSApple OSS Distributions/* vim: set ts=4: */ 132