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