1 /* 2 * Copyright (c) 2024 Apple Computer, 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 #include <darwintest.h> 30 #include <pthread.h> 31 #include <machine/cpu_capabilities.h> 32 #include <sys/commpage.h> 33 #include <sys/sysctl.h> 34 #include <mach/vm_param.h> 35 #include <stdint.h> 36 37 T_GLOBAL_META( 38 T_META_NAMESPACE("xnu.arm"), 39 T_META_RADAR_COMPONENT_NAME("xnu"), 40 T_META_RADAR_COMPONENT_VERSION("arm"), 41 T_META_OWNER("jeffrey_crowell"), 42 T_META_RUN_CONCURRENTLY(true)); 43 44 T_DECL(asb_comm_page_sanity, 45 "Test that asb comm page values are sane.") 46 { 47 int rv; 48 uint64_t max_userspace_address = MACH_VM_MAX_ADDRESS; 49 uint64_t target_address = COMM_PAGE_READ(uint64_t, ASB_TARGET_ADDRESS); 50 51 uint64_t sysctl_min_kernel_address = 0; 52 size_t min_kernel_address_size = sizeof(sysctl_min_kernel_address); 53 rv = sysctlbyname("vm.vm_min_kernel_address", &sysctl_min_kernel_address, &min_kernel_address_size, NULL, 0); 54 uint64_t kern_target_address = COMM_PAGE_READ(uint64_t, ASB_TARGET_KERN_ADDRESS); 55 56 T_QUIET; T_ASSERT_GT(target_address, max_userspace_address, "check that asb target addresses are as expected"); 57 T_QUIET; T_ASSERT_LT(kern_target_address, sysctl_min_kernel_address, "check that asb target kernel addresses are as expected"); 58 } 59