1 /* 2 * Copyright (c) 2021 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 #ifndef _KCOV_H_ 30 #define _KCOV_H_ 31 32 #if KERNEL_PRIVATE 33 34 #if !CONFIG_KCOV && __has_feature(coverage_sanitizer) 35 # error "Coverage sanitizer enabled in compiler, but kernel is not configured for KCOV" 36 #endif 37 38 #if CONFIG_KCOV 39 40 /* Forward declaration for types used in interfaces below. */ 41 typedef struct kcov_cpu_data kcov_cpu_data_t; 42 typedef struct kcov_thread_data kcov_thread_data_t; 43 44 45 __BEGIN_DECLS 46 47 /* osfmk exported */ 48 kcov_cpu_data_t *current_kcov_data(void); 49 kcov_cpu_data_t *cpu_kcov_data(int); 50 51 /* Init code */ 52 void kcov_init_thread(kcov_thread_data_t *); 53 void kcov_start_cpu(int cpuid); 54 55 /* helpers */ 56 void kcov_panic_disable(void); 57 58 /* per-thread */ 59 struct kcov_thread_data *kcov_get_thread_data(thread_t); 60 61 void kcov_enable(void); 62 void kcov_disable(void); 63 64 /* 65 * SanitizerCoverage ABI 66 */ 67 void __sanitizer_cov_pcs_init(uintptr_t *start, uintptr_t *stop); 68 void __sanitizer_cov_trace_pc_guard(uint32_t *guard); 69 void __sanitizer_cov_trace_pc_guard_init(uint32_t *start, uint32_t *stop); 70 void __sanitizer_cov_trace_pc_indirect(void *callee); 71 void __sanitizer_cov_trace_pc(void); 72 73 __END_DECLS 74 75 #endif /* CONFIG_KCOV */ 76 77 #endif /* KERNEL_PRIVATE */ 78 79 #endif /* _KCOV_H_ */ 80