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
77void
78pmcpl_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