1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2005-2007, Joseph Koshy 5 * Copyright (c) 2007 The FreeBSD Foundation 6 * Copyright (c) 2014, Adrian Chadd, Netflix Inc. 7 * All rights reserved. 8 * 9 * Portions of this software were developed by A. Joseph Koshy under 10 * sponsorship from the FreeBSD Foundation and Google, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Transform a hwpmc(4) log into human readable form, and into 36 * gprof(1) compatible profiles. 37 */ 38 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 #include <sys/param.h> 43 #include <sys/endian.h> 44 #include <sys/gmon.h> 45 #include <sys/imgact_aout.h> 46 #include <sys/imgact_elf.h> 47 #include <sys/mman.h> 48 #include <sys/pmc.h> 49 #include <sys/queue.h> 50 #include <sys/socket.h> 51 #include <sys/stat.h> 52 #include <sys/wait.h> 53 54 #include <netinet/in.h> 55 56 #include <assert.h> 57 #include <err.h> 58 #include <errno.h> 59 #include <fcntl.h> 60 #include <gelf.h> 61 #include <libgen.h> 62 #include <limits.h> 63 #include <netdb.h> 64 #include <pmc.h> 65 #include <pmclog.h> 66 #include <sysexits.h> 67 #include <stdint.h> 68 #include <stdio.h> 69 #include <stdlib.h> 70 #include <string.h> 71 #include <unistd.h> 72 73 #include "pmcstat.h" 74 #include "pmcstat_log.h" 75 #include "pmcpl_annotate_cg.h" 76 77 /* 78 * Record a callchain. 79 */ 80 81 void 82 pmcpl_annotate_cg_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, 83 uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu) 84 { 85 struct pmcstat_pcmap *map; 86 struct pmcstat_symbol *sym; 87 uintfptr_t newpc; 88 struct pmcstat_image *image; 89 int i; 90 char filename[PATH_MAX], funcname[PATH_MAX]; 91 unsigned sline; 92 93 (void) pmcr; (void) nsamples; (void) usermode; (void) cpu; 94 95 for (i = 0; i < (int) nsamples; i++) { 96 map = NULL; 97 sym = NULL; 98 image = NULL; 99 filename[0] = '\0'; 100 funcname[0] = '\0'; 101 sline = 0; 102 103 map = pmcstat_process_find_map(usermode ? pp : pmcstat_kernproc, cc[i]); 104 if (map != NULL) { 105 assert(cc[i] >= map->ppm_lowpc && cc[i] < map->ppm_highpc); 106 image = map->ppm_image; 107 newpc = cc[i] - (map->ppm_lowpc + 108 (image->pi_vaddr - image->pi_start)); 109 sym = pmcstat_symbol_search(image, newpc); 110 } 111 112 if (map != NULL && image != NULL && sym != NULL) { 113 (void) pmcstat_image_addr2line(image, cc[i], 114 filename, sizeof(filename), &sline, funcname, sizeof(funcname)); 115 } 116 117 if (map != NULL && sym != NULL) { 118 fprintf(args.pa_graphfile, "%p %s %s:%d\n", 119 (void *)cc[i], 120 funcname, 121 filename, 122 sline); 123 } else { 124 fprintf(args.pa_graphfile, "%p <unknown> ??:0\n", 125 (void *) cc[i]); 126 } 127 } 128 fprintf(args.pa_graphfile, "--\n"); 129 } 130