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