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