projects / apple / xnu.git / blame
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|---|---|---|
| 5ba3f43e A |
1 | /* |
| 2 | * Copyright (c) 2007-2009 Apple Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 14 | * | |
| 15 | * Please obtain a copy of the License at | |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 25 | * | |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
| 27 | */ | |
| 28 | #include <arm/asm.h> | |
| 29 | #include <arm/proc_reg.h> | |
| 30 | #include "assym.s" | |
| 31 | ||
| 32 | #if defined(__arm__) | |
| 33 | #include "globals_asm.h" | |
| 34 | #elif defined(__arm64__) | |
| 35 | /* We're fine, use adrp, add */ | |
| 36 | #else | |
| 37 | #error Unknown architecture. | |
| 38 | #endif | |
| 39 | ||
| d9a64523 | 40 | .section __BOOTDATA, __data // Aligned data |
| 5ba3f43e | 41 | |
| d9a64523 | 42 | .align 14 |
| 5ba3f43e | 43 | |
| d9a64523 A |
44 | .globl EXT(intstack_low_guard) |
| 45 | LEXT(intstack_low_guard) | |
| 46 | .space (PAGE_MAX_SIZE_NUM) | |
| 5ba3f43e A |
47 | |
| 48 | /* IRQ stack */ | |
| 49 | .globl EXT(intstack) // Boot processor IRQ stack | |
| 50 | LEXT(intstack) | |
| d9a64523 | 51 | .space (INTSTACK_SIZE_NUM) |
| 5ba3f43e A |
52 | .globl EXT(intstack_top) |
| 53 | LEXT(intstack_top) | |
| 54 | ||
| d9a64523 A |
55 | .globl EXT(intstack_high_guard) |
| 56 | LEXT(intstack_high_guard) | |
| 57 | .space (PAGE_MAX_SIZE_NUM) | |
| 5ba3f43e | 58 | |
| d9a64523 A |
59 | /* Low guard for fiq/exception stack is shared w/ interrupt stack high guard */ |
| 60 | ||
| 61 | #ifndef __arm64__ | |
| 5ba3f43e A |
62 | |
| 63 | .globl EXT(fiqstack) // Boot processor FIQ stack | |
| 64 | LEXT(fiqstack) | |
| d9a64523 | 65 | .space (FIQSTACK_SIZE_NUM) |
| 5ba3f43e A |
66 | .globl EXT(fiqstack_top) // Boot processor FIQ stack top |
| 67 | LEXT(fiqstack_top) | |
| 68 | ||
| d9a64523 A |
69 | .globl EXT(fiqstack_high_guard) |
| 70 | LEXT(fiqstack_high_guard) | |
| 71 | .space (PAGE_MAX_SIZE_NUM) | |
| 72 | ||
| 73 | #else | |
| 74 | ||
| 75 | .global EXT(excepstack) | |
| 76 | LEXT(excepstack) | |
| 77 | .space (EXCEPSTACK_SIZE_NUM) | |
| 78 | .globl EXT(excepstack_top) | |
| 79 | LEXT(excepstack_top) | |
| 80 | ||
| 81 | .globl EXT(excepstack_high_guard) | |
| 82 | LEXT(excepstack_high_guard) | |
| 83 | .space (PAGE_MAX_SIZE_NUM) | |
| 84 | ||
| 85 | #endif | |
| 86 | ||
| 87 | // Must align to 16K here, due to <rdar://problem/33268668> | |
| 88 | .global EXT(kd_early_buffer) | |
| 89 | .align 14 | |
| 90 | LEXT(kd_early_buffer) // space for kdebug's early event buffer | |
| 91 | .space 16*1024,0 | |
| 92 | ||
| 93 | .section __DATA, __data // Aligned data | |
| 5ba3f43e A |
94 | .align 3 // unsigned long long aligned Section |
| 95 | .globl EXT(RTClockData) | |
| 96 | LEXT(RTClockData) // Real Time clock area | |
| 97 | .space RTCLOCKDataSize_NUM,0 // (filled with 0s) | |
| 98 | ||
| 99 | #if TRASH_VFP_ON_SAVE | |
| 100 | .align 4 | |
| 101 | .globl EXT(vfptrash_data) | |
| 102 | LEXT(vfptrash_data) | |
| 103 | .fill 64, 4, 0xca55e77e | |
| 104 | #endif | |
| 105 | ||
| 5ba3f43e A |
106 | #if __arm64__ |
| 107 | .section __DATA, __const | |
| 108 | ||
| c6bf4f31 | 109 | #if defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) |
| 5ba3f43e A |
110 | /* reserve space for read only page tables */ |
| 111 | .align 14 | |
| 112 | LEXT(ropagetable_begin) | |
| f427ee49 A |
113 | #if XNU_TARGET_OS_OSX |
| 114 | // A big auxKC might need more page tables, especially because | |
| 115 | // it's not block mapped. | |
| 116 | // Note that we don't distuinguish between KASAN or not: With | |
| 117 | // a KASAN kernel, the effective auxKC limit is smaller. | |
| 118 | .space 18*16*1024,0 | |
| 119 | #elif KASAN | |
| 120 | .space 16*16*1024,0 | |
| 121 | #else | |
| d9a64523 | 122 | .space 14*16*1024,0 |
| f427ee49 | 123 | #endif |
| 5ba3f43e A |
124 | #else |
| 125 | LEXT(ropagetable_begin) | |
| c6bf4f31 | 126 | #endif /* defined(KERNEL_INTEGRITY_KTRR) || defined(KERNEL_INTEGRITY_CTRR) */ |
| 5ba3f43e A |
127 | |
| 128 | LEXT(ropagetable_end) | |
| 129 | ||
| 130 | .globl EXT(ropagetable_begin) | |
| 131 | .globl EXT(ropagetable_end) | |
| 132 | #endif /* __arm64__ */ | |
| 133 | ||
| 134 | /* vim: set ts=4: */ |