1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2019, Matthew Macy <mmacy@freebsd.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 * 29 */ 30 31 #ifndef _SYS_GCOV_H_ 32 #define _SYS_GCOV_H_ 33 34 MALLOC_DECLARE(M_GCOV); 35 36 /* 37 * Profiling data types used for gcc 3.4 and above - these are defined by 38 * gcc and need to be kept as close to the original definition as possible to 39 * remain compatible. 40 */ 41 #define GCOV_DATA_MAGIC ((unsigned int) 0x67636461) 42 #define GCOV_TAG_FUNCTION ((unsigned int) 0x01000000) 43 #define GCOV_TAG_COUNTER_BASE ((unsigned int) 0x01a10000) 44 #define GCOV_TAG_FOR_COUNTER(count) \ 45 (GCOV_TAG_COUNTER_BASE + ((unsigned int) (count) << 17)) 46 47 typedef uint64_t gcov_type; 48 49 /* Opaque gcov_info. The gcov structures can change as for example in gcc 4.7 so 50 * we cannot use full definition here and they need to be placed in gcc specific 51 * implementation of gcov. This also means no direct access to the members in 52 * generic code and usage of the interface below.*/ 53 struct gcov_info; 54 55 /* Interface to access gcov_info data */ 56 const char *gcov_info_filename(struct gcov_info *info); 57 unsigned int gcov_info_version(struct gcov_info *info); 58 struct gcov_info *gcov_info_next(struct gcov_info *info); 59 void gcov_info_link(struct gcov_info *info); 60 void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info); 61 62 /* Base interface. */ 63 enum gcov_action { 64 GCOV_ADD, 65 GCOV_REMOVE, 66 }; 67 68 /* Iterator control. */ 69 struct gcov_iterator; 70 71 struct gcov_iterator *gcov_iter_new(struct gcov_info *info); 72 void gcov_iter_free(struct gcov_iterator *iter); 73 void gcov_iter_start(struct gcov_iterator *iter); 74 int gcov_iter_next(struct gcov_iterator *iter); 75 int gcov_iter_write(struct gcov_iterator *iter, struct sbuf *sbuf); 76 struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter); 77 78 /* gcov_info control. */ 79 void gcov_info_reset(struct gcov_info *info); 80 int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2); 81 void gcov_info_add(struct gcov_info *dest, struct gcov_info *source); 82 struct gcov_info *gcov_info_dup(struct gcov_info *info); 83 void gcov_info_free(struct gcov_info *info); 84 void gcov_stats_reset(void); 85 void gcov_enable_events(void); 86 void gcov_module_unload(void *, module_t); 87 void gcov_fs_init(void); 88 89 int within_module(vm_offset_t addr, module_t mod); 90 91 struct gcov_link { 92 enum { 93 OBJ_TREE, 94 SRC_TREE, 95 } dir; 96 const char *ext; 97 }; 98 extern const struct gcov_link gcov_link[]; 99 #endif 100