1*a325d9c4SApple OSS Distributions/* 2*a325d9c4SApple OSS Distributions * Copyright (c) 2007-2009 Apple Inc. All rights reserved. 3*a325d9c4SApple OSS Distributions * 4*a325d9c4SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*a325d9c4SApple OSS Distributions * 6*a325d9c4SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*a325d9c4SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*a325d9c4SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*a325d9c4SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*a325d9c4SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*a325d9c4SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*a325d9c4SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*a325d9c4SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*a325d9c4SApple OSS Distributions * 15*a325d9c4SApple OSS Distributions * Please obtain a copy of the License at 16*a325d9c4SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*a325d9c4SApple OSS Distributions * 18*a325d9c4SApple OSS Distributions * The Original Code and all software distributed under the License are 19*a325d9c4SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*a325d9c4SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*a325d9c4SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*a325d9c4SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*a325d9c4SApple OSS Distributions * Please see the License for the specific language governing rights and 24*a325d9c4SApple OSS Distributions * limitations under the License. 25*a325d9c4SApple OSS Distributions * 26*a325d9c4SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*a325d9c4SApple OSS Distributions */ 28*a325d9c4SApple OSS Distributions#include <arm/asm.h> 29*a325d9c4SApple OSS Distributions#include <arm/proc_reg.h> 30*a325d9c4SApple OSS Distributions#include "assym.s" 31*a325d9c4SApple OSS Distributions 32*a325d9c4SApple OSS Distributions#if defined(__arm__) 33*a325d9c4SApple OSS Distributions#include "globals_asm.h" 34*a325d9c4SApple OSS Distributions#elif defined(__arm64__) 35*a325d9c4SApple OSS Distributions/* We're fine, use adrp, add */ 36*a325d9c4SApple OSS Distributions#else 37*a325d9c4SApple OSS Distributions#error Unknown architecture. 38*a325d9c4SApple OSS Distributions#endif 39*a325d9c4SApple OSS Distributions 40*a325d9c4SApple OSS Distributions .section __BOOTDATA, __data // Aligned data 41*a325d9c4SApple OSS Distributions 42*a325d9c4SApple OSS Distributions .align 14 43*a325d9c4SApple OSS Distributions 44*a325d9c4SApple OSS Distributions .globl EXT(intstack_low_guard) 45*a325d9c4SApple OSS DistributionsLEXT(intstack_low_guard) 46*a325d9c4SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 47*a325d9c4SApple OSS Distributions 48*a325d9c4SApple OSS Distributions /* IRQ stack */ 49*a325d9c4SApple OSS Distributions .globl EXT(intstack) // Boot processor IRQ stack 50*a325d9c4SApple OSS DistributionsLEXT(intstack) 51*a325d9c4SApple OSS Distributions .space (INTSTACK_SIZE_NUM) 52*a325d9c4SApple OSS Distributions .globl EXT(intstack_top) 53*a325d9c4SApple OSS DistributionsLEXT(intstack_top) 54*a325d9c4SApple OSS Distributions 55*a325d9c4SApple OSS Distributions .globl EXT(intstack_high_guard) 56*a325d9c4SApple OSS DistributionsLEXT(intstack_high_guard) 57*a325d9c4SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 58*a325d9c4SApple OSS Distributions 59*a325d9c4SApple OSS Distributions/* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ 60*a325d9c4SApple OSS Distributions 61*a325d9c4SApple OSS Distributions#ifndef __arm64__ 62*a325d9c4SApple OSS Distributions 63*a325d9c4SApple OSS Distributions .globl EXT(fiqstack) // Boot processor FIQ stack 64*a325d9c4SApple OSS DistributionsLEXT(fiqstack) 65*a325d9c4SApple OSS Distributions .space (FIQSTACK_SIZE_NUM) 66*a325d9c4SApple OSS Distributions .globl EXT(fiqstack_top) // Boot processor FIQ stack top 67*a325d9c4SApple OSS DistributionsLEXT(fiqstack_top) 68*a325d9c4SApple OSS Distributions 69*a325d9c4SApple OSS Distributions .globl EXT(fiqstack_high_guard) 70*a325d9c4SApple OSS DistributionsLEXT(fiqstack_high_guard) 71*a325d9c4SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 72*a325d9c4SApple OSS Distributions 73*a325d9c4SApple OSS Distributions#else 74*a325d9c4SApple OSS Distributions 75*a325d9c4SApple OSS Distributions .global EXT(excepstack) 76*a325d9c4SApple OSS DistributionsLEXT(excepstack) 77*a325d9c4SApple OSS Distributions .space (EXCEPSTACK_SIZE_NUM) 78*a325d9c4SApple OSS Distributions .globl EXT(excepstack_top) 79*a325d9c4SApple OSS DistributionsLEXT(excepstack_top) 80*a325d9c4SApple OSS Distributions 81*a325d9c4SApple OSS Distributions .globl EXT(excepstack_high_guard) 82*a325d9c4SApple OSS DistributionsLEXT(excepstack_high_guard) 83*a325d9c4SApple OSS Distributions .space (PAGE_MAX_SIZE_NUM) 84*a325d9c4SApple OSS Distributions 85*a325d9c4SApple OSS Distributions#endif 86*a325d9c4SApple OSS Distributions 87*a325d9c4SApple OSS Distributions// Must align to 16K here, due to <rdar://problem/33268668> 88*a325d9c4SApple OSS Distributions .global EXT(kd_early_buffer) 89*a325d9c4SApple OSS Distributions .align 14 90*a325d9c4SApple OSS DistributionsLEXT(kd_early_buffer) // space for kdebug's early event buffer 91*a325d9c4SApple OSS Distributions .space 16*1024,0 92*a325d9c4SApple OSS Distributions 93*a325d9c4SApple OSS Distributions .section __DATA, __data // Aligned data 94*a325d9c4SApple OSS Distributions .align 3 // unsigned long long aligned Section 95*a325d9c4SApple OSS Distributions .globl EXT(RTClockData) 96*a325d9c4SApple OSS DistributionsLEXT(RTClockData) // Real Time clock area 97*a325d9c4SApple OSS Distributions .space RTCLOCKDataSize_NUM,0 // (filled with 0s) 98*a325d9c4SApple OSS Distributions 99*a325d9c4SApple OSS Distributions#if TRASH_VFP_ON_SAVE 100*a325d9c4SApple OSS Distributions .align 4 101*a325d9c4SApple OSS Distributions .globl EXT(vfptrash_data) 102*a325d9c4SApple OSS DistributionsLEXT(vfptrash_data) 103*a325d9c4SApple OSS Distributions .fill 64, 4, 0xca55e77e 104*a325d9c4SApple OSS Distributions#endif 105*a325d9c4SApple OSS Distributions 106*a325d9c4SApple OSS Distributions#if __arm64__ 107*a325d9c4SApple OSS Distributions .section __DATA, __const 108*a325d9c4SApple OSS Distributions 109*a325d9c4SApple OSS Distributions#if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) 110*a325d9c4SApple OSS Distributions/* reserve space for read only page tables */ 111*a325d9c4SApple OSS Distributions .align 14 112*a325d9c4SApple OSS DistributionsLEXT(ropagetable_begin) 113*a325d9c4SApple OSS Distributions#if XNU_TARGET_OS_OSX 114*a325d9c4SApple OSS Distributions // A big auxKC might need more page tables, especially because 115*a325d9c4SApple OSS Distributions // it's not block mapped. 116*a325d9c4SApple OSS Distributions // Note that we don't distuinguish between KASAN or not: With 117*a325d9c4SApple OSS Distributions // a KASAN kernel, the effective auxKC limit is smaller. 118*a325d9c4SApple OSS Distributions .space 18*16*1024,0 119*a325d9c4SApple OSS Distributions#elif KASAN 120*a325d9c4SApple OSS Distributions .space 16*16*1024,0 121*a325d9c4SApple OSS Distributions#else 122*a325d9c4SApple OSS Distributions .space 14*16*1024,0 123*a325d9c4SApple OSS Distributions#endif 124*a325d9c4SApple OSS Distributions#else 125*a325d9c4SApple OSS DistributionsLEXT(ropagetable_begin) 126*a325d9c4SApple OSS Distributions#endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ 127*a325d9c4SApple OSS Distributions 128*a325d9c4SApple OSS DistributionsLEXT(ropagetable_end) 129*a325d9c4SApple OSS Distributions 130*a325d9c4SApple OSS Distributions .globl EXT(ropagetable_begin) 131*a325d9c4SApple OSS Distributions .globl EXT(ropagetable_end) 132*a325d9c4SApple OSS Distributions#endif /* __arm64__ */ 133*a325d9c4SApple OSS Distributions 134*a325d9c4SApple OSS Distributions/* vim: set ts=4: */ 135