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 * Copyright (c) 2014 Netflix, Inc.
9 * Written by: Adrian Chadd <[email protected]>
10 *
11 * Portions of this software were developed by A. Joseph Koshy under
12 * sponsorship from the FreeBSD Foundation and Google, Inc.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 /*
37 * Transform a hwpmc(4) log into human readable form, and into
38 * gprof(1) compatible profiles.
39 */
40
41 #include <sys/cdefs.h>
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
pmcpl_annotate_cg_process(struct pmcstat_process * pp,struct pmcstat_pmcrecord * pmcr,uint32_t nsamples,uintfptr_t * cc,int usermode,uint32_t cpu)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