1 /* 2 * Copyright (c) 2022 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 _BTI_TELEMETRY_H_ 30 #define _BTI_TELEMETRY_H_ 31 #ifdef CONFIG_BTI_TELEMETRY 32 #include <mach/exception.h> 33 #include <mach/vm_types.h> 34 #include <mach/machine/thread_status.h> 35 36 /** 37 * Wakes up the BTI exception telemetry subsystem. Call once per boot. 38 */ 39 void 40 bti_telemetry_init(void); 41 42 /** 43 * Handle a BTI exception. Returns TRUE if handled and OK to return from the 44 * exception, false otherwise. 45 */ 46 bool 47 bti_telemetry_handle_exception(arm_saved_state_t *state); 48 49 #endif /* CONFIG_BTI_TELEMETRY */ 50 #endif /* _BTI_TELEMETRY_H_ */ 51