1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 */ 28 29 #ifndef _SYS_GCOV_H_ 30 #define _SYS_GCOV_H_ 31 32 MALLOC_DECLARE(M_GCOV); 33 34 /* 35 * Profiling data types used for gcc 3.4 and above - these are defined by 36 * gcc and need to be kept as close to the original definition as possible to 37 * remain compatible. 38 */ 39 #define GCOV_DATA_MAGIC ((unsigned int) 0x67636461) 40 #define GCOV_TAG_FUNCTION ((unsigned int) 0x01000000) 41 #define GCOV_TAG_COUNTER_BASE ((unsigned int) 0x01a10000) 42 #define GCOV_TAG_FOR_COUNTER(count) \ 43 (GCOV_TAG_COUNTER_BASE + ((unsigned int) (count) << 17)) 44 45 typedef uint64_t gcov_type; 46 47 /* Opaque gcov_info. The gcov structures can change as for example in gcc 4.7 so 48 * we cannot use full definition here and they need to be placed in gcc specific 49 * implementation of gcov. This also means no direct access to the members in 50 * generic code and usage of the interface below.*/ 51 struct gcov_info; 52 53 /* Interface to access gcov_info data */ 54 const char *gcov_info_filename(struct gcov_info *info); 55 unsigned int gcov_info_version(struct gcov_info *info); 56 struct gcov_info *gcov_info_next(struct gcov_info *info); 57 void gcov_info_link(struct gcov_info *info); 58 void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info); 59 60 /* Base interface. */ 61 enum gcov_action { 62 GCOV_ADD, 63 GCOV_REMOVE, 64 }; 65 66 /* Iterator control. */ 67 struct gcov_iterator; 68 69 struct gcov_iterator *gcov_iter_new(struct gcov_info *info); 70 void gcov_iter_free(struct gcov_iterator *iter); 71 void gcov_iter_start(struct gcov_iterator *iter); 72 int gcov_iter_next(struct gcov_iterator *iter); 73 int gcov_iter_write(struct gcov_iterator *iter, struct sbuf *sbuf); 74 struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter); 75 76 /* gcov_info control. */ 77 void gcov_info_reset(struct gcov_info *info); 78 int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2); 79 void gcov_info_add(struct gcov_info *dest, struct gcov_info *source); 80 struct gcov_info *gcov_info_dup(struct gcov_info *info); 81 void gcov_info_free(struct gcov_info *info); 82 void gcov_stats_reset(void); 83 void gcov_enable_events(void); 84 void gcov_module_unload(void *, module_t); 85 void gcov_fs_init(void); 86 87 int within_module(vm_offset_t addr, module_t mod); 88 89 struct gcov_link { 90 enum { 91 OBJ_TREE, 92 SRC_TREE, 93 } dir; 94 const char *ext; 95 }; 96 extern const struct gcov_link gcov_link[]; 97 #endif 98