1 /* $NetBSD: kcov.h,v 1.10 2020/06/05 17:20:57 maxv Exp $ */ 2 3 /* 4 * Copyright (c) 2019-2020 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Siddharth Muralee. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _SYS_KCOV_H_ 33 #define _SYS_KCOV_H_ 34 35 #ifdef _KERNEL_OPT 36 #include "opt_kcov.h" 37 #endif 38 39 #include <sys/param.h> 40 #include <sys/types.h> 41 #include <sys/atomic.h> 42 43 #define KCOV_IOC_SETBUFSIZE _IOW('K', 1, uint64_t) 44 #define KCOV_IOC_ENABLE _IOW('K', 2, int) 45 #define KCOV_IOC_DISABLE _IO('K', 3) 46 47 #define KCOV_IOC_REMOTE_ATTACH _IOW('K', 10, struct kcov_ioc_remote_attach) 48 #define KCOV_IOC_REMOTE_DETACH _IO('K', 11) 49 50 struct kcov_ioc_remote_attach { 51 uint64_t subsystem; 52 uint64_t id; 53 }; 54 55 #define KCOV_REMOTE_VHCI 0 56 #define KCOV_REMOTE_VHCI_ID(bus, port) \ 57 (((uint64_t)bus << 32ULL) | ((uint64_t)port & 0xFFFFFFFFULL)) 58 59 #define KCOV_MODE_NONE 0 60 #define KCOV_MODE_TRACE_PC 1 61 #define KCOV_MODE_TRACE_CMP 2 62 63 typedef volatile uint64_t kcov_int_t; 64 #define KCOV_ENTRY_SIZE sizeof(kcov_int_t) 65 66 #ifdef _KERNEL 67 #ifdef KCOV 68 void kcov_remote_register(uint64_t, uint64_t); 69 void kcov_remote_enter(uint64_t, uint64_t); 70 void kcov_remote_leave(uint64_t, uint64_t); 71 void kcov_silence_enter(void); 72 void kcov_silence_leave(void); 73 void kcov_lwp_free(struct lwp *); 74 #else 75 #define kcov_remote_register(s, i) __nothing 76 #define kcov_remote_enter(s, i) __nothing 77 #define kcov_remote_leave(s, i) __nothing 78 #define kcov_silence_enter() __nothing 79 #define kcov_silence_leave() __nothing 80 #define kcov_lwp_free(a) __nothing 81 #endif 82 #endif 83 84 #endif /* !_SYS_KCOV_H_ */ 85