1*4f1223e8SApple OSS Distributions/* 2*4f1223e8SApple OSS Distributions * Copyright (c) 2007-2021 Apple Inc. All rights reserved. 3*4f1223e8SApple OSS Distributions * 4*4f1223e8SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*4f1223e8SApple OSS Distributions * 6*4f1223e8SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*4f1223e8SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*4f1223e8SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*4f1223e8SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*4f1223e8SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*4f1223e8SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*4f1223e8SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*4f1223e8SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*4f1223e8SApple OSS Distributions * 15*4f1223e8SApple OSS Distributions * Please obtain a copy of the License at 16*4f1223e8SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*4f1223e8SApple OSS Distributions * 18*4f1223e8SApple OSS Distributions * The Original Code and all software distributed under the License are 19*4f1223e8SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*4f1223e8SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*4f1223e8SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*4f1223e8SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*4f1223e8SApple OSS Distributions * Please see the License for the specific language governing rights and 24*4f1223e8SApple OSS Distributions * limitations under the License. 25*4f1223e8SApple OSS Distributions * 26*4f1223e8SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*4f1223e8SApple OSS Distributions */ 28*4f1223e8SApple OSS Distributions#include <arm64/asm.h> 29*4f1223e8SApple OSS Distributions#include <arm64/proc_reg.h> 30*4f1223e8SApple OSS Distributions#include "assym.s" 31*4f1223e8SApple OSS Distributions 32*4f1223e8SApple OSS Distributions#if CONFIG_SPTM 33*4f1223e8SApple OSS Distributions#include <sptm/sptm_xnu.h> 34*4f1223e8SApple OSS Distributions#endif /* CONFIG_SPTM */ 35*4f1223e8SApple OSS Distributions 36*4f1223e8SApple OSS Distributions#if defined(__arm64__) 37*4f1223e8SApple OSS Distributions/* We're fine, use adrp, add */ 38*4f1223e8SApple OSS Distributions#else 39*4f1223e8SApple OSS Distributions#error Unknown architecture. 40*4f1223e8SApple OSS Distributions#endif 41*4f1223e8SApple OSS Distributions 42*4f1223e8SApple OSS Distributions .section __BOOTDATA, __data // Aligned data 43*4f1223e8SApple OSS Distributions 44*4f1223e8SApple OSS Distributions .align 14 45*4f1223e8SApple OSS Distributions 46*4f1223e8SApple OSS Distributions .globl EXT(intstack_low_guard) 47*4f1223e8SApple OSS DistributionsLEXT(intstack_low_guard) 48*4f1223e8SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 49*4f1223e8SApple OSS Distributions 50*4f1223e8SApple OSS Distributions /* IRQ stack */ 51*4f1223e8SApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 52*4f1223e8SApple OSS DistributionsLEXT(intstack) 53*4f1223e8SApple OSS Distributions .space (INTSTACK_SIZE_NUM) 54*4f1223e8SApple OSS Distributions .globl EXT(intstack_top) 55*4f1223e8SApple OSS DistributionsLEXT(intstack_top) 56*4f1223e8SApple OSS Distributions 57*4f1223e8SApple OSS Distributions .globl EXT(intstack_high_guard) 58*4f1223e8SApple OSS DistributionsLEXT(intstack_high_guard) 59*4f1223e8SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 60*4f1223e8SApple OSS Distributions 61*4f1223e8SApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 62*4f1223e8SApple OSS Distributions 63*4f1223e8SApple OSS Distributions#ifdef __arm64__ 64*4f1223e8SApple OSS Distributions .global EXT(excepstack) 65*4f1223e8SApple OSS DistributionsLEXT(excepstack) 66*4f1223e8SApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 67*4f1223e8SApple OSS Distributions .globl EXT(excepstack_top) 68*4f1223e8SApple OSS DistributionsLEXT(excepstack_top) 69*4f1223e8SApple OSS Distributions 70*4f1223e8SApple OSS Distributions .globl EXT(excepstack_high_guard) 71*4f1223e8SApple OSS DistributionsLEXT(excepstack_high_guard) 72*4f1223e8SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 73*4f1223e8SApple OSS Distributions 74*4f1223e8SApple OSS Distributions#endif 75*4f1223e8SApple OSS Distributions 76*4f1223e8SApple OSS Distributions 77*4f1223e8SApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 78*4f1223e8SApple OSS Distributions .global EXT(kd_early_buffer) 79*4f1223e8SApple OSS Distributions .align 14 80*4f1223e8SApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 81*4f1223e8SApple OSS Distributions .space 16*1024,0 82*4f1223e8SApple OSS Distributions 83*4f1223e8SApple OSS Distributions .section __DATA, __data // Aligned data 84*4f1223e8SApple OSS Distributions .align 3 // unsigned long long aligned Section 85*4f1223e8SApple OSS Distributions .globl EXT(RTClockData) 86*4f1223e8SApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 87*4f1223e8SApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 88*4f1223e8SApple OSS Distributions 89*4f1223e8SApple OSS Distributions#if TRASH_VFP_ON_SAVE 90*4f1223e8SApple OSS Distributions .align 4 91*4f1223e8SApple OSS Distributions .globl EXT(vfptrash_data) 92*4f1223e8SApple OSS DistributionsLEXT(vfptrash_data) 93*4f1223e8SApple OSS Distributions .fill 64, 4, 0xca55e77e 94*4f1223e8SApple OSS Distributions#endif 95*4f1223e8SApple OSS Distributions 96*4f1223e8SApple OSS Distributions#if __arm64__ 97*4f1223e8SApple OSS Distributions 98*4f1223e8SApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 99*4f1223e8SApple OSS Distributions#if CONFIG_SPTM 100*4f1223e8SApple OSS Distributions .section __DATA_SPTM, __const 101*4f1223e8SApple OSS Distributions .align 14 102*4f1223e8SApple OSS Distributions /* reserve a page for xnu-CTRR covered SPTM data */ 103*4f1223e8SApple OSS Distributions .space 16*1024,0 104*4f1223e8SApple OSS Distributions#else 105*4f1223e8SApple OSS Distributions .section __DATA, __const 106*4f1223e8SApple OSS Distributions .align 14 107*4f1223e8SApple OSS Distributions#endif /* CONFIG_SPTM */ 108*4f1223e8SApple OSS Distributions/* reserve space for read only page tables */ 109*4f1223e8SApple OSS DistributionsLEXT(ropagetable_begin) 110*4f1223e8SApple OSS Distributions#if XNU_TARGET_OS_OSX 111*4f1223e8SApple OSS Distributions // A big auxKC might need more page tables, especially because 112*4f1223e8SApple OSS Distributions // it's not block mapped. 113*4f1223e8SApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 114*4f1223e8SApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 115*4f1223e8SApple OSS Distributions .space 20*16*1024,0 116*4f1223e8SApple OSS Distributions#elif KASAN 117*4f1223e8SApple OSS Distributions .space 16*16*1024,0 118*4f1223e8SApple OSS Distributions#else 119*4f1223e8SApple OSS Distributions .space 14*16*1024,0 120*4f1223e8SApple OSS Distributions#endif 121*4f1223e8SApple OSS Distributions#else 122*4f1223e8SApple OSS DistributionsLEXT(ropagetable_begin) 123*4f1223e8SApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 124*4f1223e8SApple OSS Distributions 125*4f1223e8SApple OSS DistributionsLEXT(ropagetable_end) 126*4f1223e8SApple OSS Distributions 127*4f1223e8SApple OSS Distributions .globl EXT(ropagetable_begin) 128*4f1223e8SApple OSS Distributions .globl EXT(ropagetable_end) 129*4f1223e8SApple OSS Distributions#endif /* __arm64__ */ 130*4f1223e8SApple OSS Distributions 131*4f1223e8SApple OSS Distributions/* vim: set ts=4: */ 132