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 <adrian@FreeBSD.org>
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/param.h>
42#include <sys/endian.h>
43#include <sys/gmon.h>
44#include <sys/imgact_aout.h>
45#include <sys/imgact_elf.h>
46#include <sys/mman.h>
47#include <sys/pmc.h>
48#include <sys/queue.h>
49#include <sys/socket.h>
50#include <sys/stat.h>
51#include <sys/wait.h>
52
53#include <netinet/in.h>
54
55#include <assert.h>
56#include <err.h>
57#include <errno.h>
58#include <fcntl.h>
59#include <gelf.h>
60#include <libgen.h>
61#include <limits.h>
62#include <netdb.h>
63#include <pmc.h>
64#include <pmclog.h>
65#include <sysexits.h>
66#include <stdint.h>
67#include <stdio.h>
68#include <stdlib.h>
69#include <string.h>
70#include <unistd.h>
71
72#include "pmcstat.h"
73#include "pmcstat_log.h"
74#include "pmcpl_annotate_cg.h"
75
76/*
77 * Record a callchain.
78 */
79
80void
81pmcpl_annotate_cg_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr,
82    uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu)
83{
84	struct pmcstat_pcmap *map;
85	struct pmcstat_symbol *sym;
86	uintfptr_t newpc;
87	struct pmcstat_image *image;
88	int i;
89	char filename[PATH_MAX], funcname[PATH_MAX];
90	unsigned sline;
91
92	(void) pmcr; (void) nsamples; (void) usermode; (void) cpu;
93
94	for (i = 0; i < (int) nsamples; i++) {
95		map = NULL;
96		sym = NULL;
97		image = NULL;
98		filename[0] = '\0';
99		funcname[0] = '\0';
100		sline = 0;
101
102		map = pmcstat_process_find_map(usermode ? pp : pmcstat_kernproc, cc[i]);
103		if (map != NULL) {
104			assert(cc[i] >= map->ppm_lowpc && cc[i] < map->ppm_highpc);
105			image = map->ppm_image;
106			newpc = cc[i] - (map->ppm_lowpc +
107				(image->pi_vaddr - image->pi_start));
108			sym = pmcstat_symbol_search(image, newpc);
109		}
110
111		if (map != NULL && image != NULL && sym != NULL) {
112			(void) pmcstat_image_addr2line(image, cc[i],
113			    filename, sizeof(filename), &sline, funcname, sizeof(funcname));
114		}
115
116		if (map != NULL && sym != NULL) {
117			fprintf(args.pa_graphfile, "%p %s %s:%d\n",
118			    (void *)cc[i],
119			    funcname,
120			    filename,
121			    sline);
122		} else {
123			fprintf(args.pa_graphfile, "%p <unknown> ??:0\n",
124			    (void *) cc[i]);
125		}
126	}
127	fprintf(args.pa_graphfile, "--\n");
128}
129