1 /* 2 * Copyright (c) 2007 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 /* 29 * @OSF_COPYRIGHT@ 30 */ 31 32 /* 33 * Mach Operating System 34 * Copyright (c) 1991,1990,1989 Carnegie Mellon University 35 * All Rights Reserved. 36 * 37 * Permission to use, copy, modify and distribute this software and its 38 * documentation is hereby granted, provided that both the copyright 39 * notice and this permission notice appear in all copies of the 40 * software, derivative works or modified versions, and any portions 41 * thereof, and that both notices appear in supporting documentation. 42 * 43 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 44 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 45 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 46 * 47 * Carnegie Mellon requests users of this software to return to 48 * 49 * Software Distribution Coordinator or [email protected] 50 * School of Computer Science 51 * Carnegie Mellon University 52 * Pittsburgh PA 15213-3890 53 * 54 * any improvements or extensions that they make and grant Carnegie Mellon 55 * the rights to redistribute these changes. 56 */ 57 58 /* 59 * Machine dependent task fields 60 */ 61 62 #ifdef MACH_KERNEL_PRIVATE 63 /* Provide access to target-specific defintions which may be used by 64 * consuming code, e.g. HYPERVISOR. */ 65 #include <arm64/proc_reg.h> 66 #endif 67 68 69 #if defined(HAS_APPLE_PAC) 70 #define TASK_ADDITIONS_PAC \ 71 uint64_t rop_pid; \ 72 uint64_t jop_pid; \ 73 uint8_t disable_user_jop; 74 #else 75 #define TASK_ADDITIONS_PAC 76 #endif 77 78 #if HAS_MTE || HAS_MTE_EMULATION_SHIMS 79 80 __options_closed_decl(task_sec_policy_t, uint8_t, { 81 TASK_SEC_POLICY_NONE = 0x00, 82 /* Turn off MTE on the first fault, report and continue */ 83 TASK_SEC_POLICY_SOFT_MODE = 0x01, 84 /* Ask userspace allocators to tag pure data based on their algorithms */ 85 TASK_SEC_POLICY_USER_DATA = 0x02, 86 /* Non-fatal tag violation EXC_GUARD has been sent */ 87 TASK_SEC_POLICY_SENT_EXC_GUARD = 0x04, 88 /* Non-fatal VM violation EXC_GUARD has been sent */ 89 TASK_SEC_POLICY_SENT_VM_EXC_GUARD = 0x08, 90 /* MTE enablement is inherited on spawn/exec (it is always inherited on fork regardless of this flag) */ 91 TASK_SEC_POLICY_INHERIT = 0x10, 92 /* VM policy violations are nonfatal and instead generate a simulated crash */ 93 TASK_SEC_POLICY_VM_POLICY_BYPASS = 0x20, 94 /* This task runs with tag checking disabled */ 95 TASK_SEC_POLICY_NEVER_CHECK = 0x40, 96 /* This task may never receive aliases to tagged memory */ 97 TASK_SEC_POLICY_RESTRICT_RECEIVING_ALIASES_TO_TAGGED_MEMORY = 0x80 98 }); 99 100 /* not protected by the task lock; reads/writes must be atomic */ 101 #define TASK_ADDITIONS_HW_AND_EMULATION \ 102 task_sec_policy_t task_sec_policy; 103 104 #else /* HAS_MTE || HAS_MTE_EMULATION_SHIMS */ 105 #define TASK_ADDITIONS_HW_AND_EMULATION 106 #endif /* HAS_MTE || HAS_MTE_EMULATION_SHIMS */ 107 108 109 110 #define TASK_ADDITIONS_UEXC uint64_t uexc[4]; 111 112 #if !__ARM_KERNEL_PROTECT__ 113 #define TASK_ADDITIONS_X18 bool preserve_x18; 114 #else 115 #define TASK_ADDITIONS_X18 116 #endif 117 118 #define TASK_ADDITIONS_APT 119 120 #define MACHINE_TASK \ 121 void * XNU_PTRAUTH_SIGNED_PTR("task.task_debug") task_debug; \ 122 TASK_ADDITIONS_PAC \ 123 TASK_ADDITIONS_HW_AND_EMULATION \ 124 \ 125 TASK_ADDITIONS_UEXC \ 126 TASK_ADDITIONS_X18 \ 127 TASK_ADDITIONS_APT \ 128 bool uses_1ghz_timebase; 129