1*2c2f96dcSApple OSS Distributions/* 2*2c2f96dcSApple OSS Distributions * Copyright (c) 2007-2021 Apple Inc. All rights reserved. 3*2c2f96dcSApple OSS Distributions * 4*2c2f96dcSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*2c2f96dcSApple OSS Distributions * 6*2c2f96dcSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*2c2f96dcSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*2c2f96dcSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*2c2f96dcSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*2c2f96dcSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*2c2f96dcSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*2c2f96dcSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*2c2f96dcSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*2c2f96dcSApple OSS Distributions * 15*2c2f96dcSApple OSS Distributions * Please obtain a copy of the License at 16*2c2f96dcSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*2c2f96dcSApple OSS Distributions * 18*2c2f96dcSApple OSS Distributions * The Original Code and all software distributed under the License are 19*2c2f96dcSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*2c2f96dcSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*2c2f96dcSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*2c2f96dcSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*2c2f96dcSApple OSS Distributions * Please see the License for the specific language governing rights and 24*2c2f96dcSApple OSS Distributions * limitations under the License. 25*2c2f96dcSApple OSS Distributions * 26*2c2f96dcSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*2c2f96dcSApple OSS Distributions */ 28*2c2f96dcSApple OSS Distributions#include <arm64/asm.h> 29*2c2f96dcSApple OSS Distributions#include <arm64/proc_reg.h> 30*2c2f96dcSApple OSS Distributions#include "assym.s" 31*2c2f96dcSApple OSS Distributions 32*2c2f96dcSApple OSS Distributions#if defined(__arm64__) 33*2c2f96dcSApple OSS Distributions/* We're fine, use adrp, add */ 34*2c2f96dcSApple OSS Distributions#else 35*2c2f96dcSApple OSS Distributions#error Unknown architecture. 36*2c2f96dcSApple OSS Distributions#endif 37*2c2f96dcSApple OSS Distributions 38*2c2f96dcSApple OSS Distributions .section __BOOTDATA, __data // Aligned data 39*2c2f96dcSApple OSS Distributions 40*2c2f96dcSApple OSS Distributions .align 14 41*2c2f96dcSApple OSS Distributions 42*2c2f96dcSApple OSS Distributions .globl EXT(intstack_low_guard) 43*2c2f96dcSApple OSS DistributionsLEXT(intstack_low_guard) 44*2c2f96dcSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 45*2c2f96dcSApple OSS Distributions 46*2c2f96dcSApple OSS Distributions /* IRQ stack */ 47*2c2f96dcSApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 48*2c2f96dcSApple OSS DistributionsLEXT(intstack) 49*2c2f96dcSApple OSS Distributions .space (INTSTACK_SIZE_NUM) 50*2c2f96dcSApple OSS Distributions .globl EXT(intstack_top) 51*2c2f96dcSApple OSS DistributionsLEXT(intstack_top) 52*2c2f96dcSApple OSS Distributions 53*2c2f96dcSApple OSS Distributions .globl EXT(intstack_high_guard) 54*2c2f96dcSApple OSS DistributionsLEXT(intstack_high_guard) 55*2c2f96dcSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 56*2c2f96dcSApple OSS Distributions 57*2c2f96dcSApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 58*2c2f96dcSApple OSS Distributions 59*2c2f96dcSApple OSS Distributions#ifdef __arm64__ 60*2c2f96dcSApple OSS Distributions .global EXT(excepstack) 61*2c2f96dcSApple OSS DistributionsLEXT(excepstack) 62*2c2f96dcSApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 63*2c2f96dcSApple OSS Distributions .globl EXT(excepstack_top) 64*2c2f96dcSApple OSS DistributionsLEXT(excepstack_top) 65*2c2f96dcSApple OSS Distributions 66*2c2f96dcSApple OSS Distributions .globl EXT(excepstack_high_guard) 67*2c2f96dcSApple OSS DistributionsLEXT(excepstack_high_guard) 68*2c2f96dcSApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 69*2c2f96dcSApple OSS Distributions 70*2c2f96dcSApple OSS Distributions#endif 71*2c2f96dcSApple OSS Distributions 72*2c2f96dcSApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 73*2c2f96dcSApple OSS Distributions .global EXT(kd_early_buffer) 74*2c2f96dcSApple OSS Distributions .align 14 75*2c2f96dcSApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 76*2c2f96dcSApple OSS Distributions .space 16*1024,0 77*2c2f96dcSApple OSS Distributions 78*2c2f96dcSApple OSS Distributions .section __DATA, __data // Aligned data 79*2c2f96dcSApple OSS Distributions .align 3 // unsigned long long aligned Section 80*2c2f96dcSApple OSS Distributions .globl EXT(RTClockData) 81*2c2f96dcSApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 82*2c2f96dcSApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 83*2c2f96dcSApple OSS Distributions 84*2c2f96dcSApple OSS Distributions#if TRASH_VFP_ON_SAVE 85*2c2f96dcSApple OSS Distributions .align 4 86*2c2f96dcSApple OSS Distributions .globl EXT(vfptrash_data) 87*2c2f96dcSApple OSS DistributionsLEXT(vfptrash_data) 88*2c2f96dcSApple OSS Distributions .fill 64, 4, 0xca55e77e 89*2c2f96dcSApple OSS Distributions#endif 90*2c2f96dcSApple OSS Distributions 91*2c2f96dcSApple OSS Distributions#if __arm64__ 92*2c2f96dcSApple OSS Distributions 93*2c2f96dcSApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 94*2c2f96dcSApple OSS Distributions#if CONFIG_SPTM 95*2c2f96dcSApple OSS Distributions .section __DATA_SPTM, __const 96*2c2f96dcSApple OSS Distributions .align 14 97*2c2f96dcSApple OSS Distributions /* reserve a page for xnu-CTRR covered SPTM data */ 98*2c2f96dcSApple OSS Distributions .space 16*1024,0 99*2c2f96dcSApple OSS Distributions#else 100*2c2f96dcSApple OSS Distributions .section __DATA, __const 101*2c2f96dcSApple OSS Distributions .align 14 102*2c2f96dcSApple OSS Distributions#endif /* CONFIG_SPTM */ 103*2c2f96dcSApple OSS Distributions/* reserve space for read only page tables */ 104*2c2f96dcSApple OSS DistributionsLEXT(ropagetable_begin) 105*2c2f96dcSApple OSS Distributions#if XNU_TARGET_OS_OSX 106*2c2f96dcSApple OSS Distributions // A big auxKC might need more page tables, especially because 107*2c2f96dcSApple OSS Distributions // it's not block mapped. 108*2c2f96dcSApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 109*2c2f96dcSApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 110*2c2f96dcSApple OSS Distributions .space 18*16*1024,0 111*2c2f96dcSApple OSS Distributions#elif KASAN 112*2c2f96dcSApple OSS Distributions .space 16*16*1024,0 113*2c2f96dcSApple OSS Distributions#else 114*2c2f96dcSApple OSS Distributions .space 14*16*1024,0 115*2c2f96dcSApple OSS Distributions#endif 116*2c2f96dcSApple OSS Distributions#else 117*2c2f96dcSApple OSS DistributionsLEXT(ropagetable_begin) 118*2c2f96dcSApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 119*2c2f96dcSApple OSS Distributions 120*2c2f96dcSApple OSS DistributionsLEXT(ropagetable_end) 121*2c2f96dcSApple OSS Distributions 122*2c2f96dcSApple OSS Distributions .globl EXT(ropagetable_begin) 123*2c2f96dcSApple OSS Distributions .globl EXT(ropagetable_end) 124*2c2f96dcSApple OSS Distributions#endif /* __arm64__ */ 125*2c2f96dcSApple OSS Distributions 126*2c2f96dcSApple OSS Distributions/* vim: set ts=4: */ 127