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/*-
* Copyright (c) 2005-2007, Joseph Koshy
* Copyright (c) 2007 The FreeBSD Foundation
* All rights reserved.
*
* Portions of this software were developed by A. Joseph Koshy under
* sponsorship from the FreeBSD Foundation and Google, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Transform a hwpmc(4) log into human readable form, and into
* gprof(1) compatible profiles.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/endian.h>
#include <sys/gmon.h>
#include <sys/imgact_aout.h>
#include <sys/imgact_elf.h>
#include <sys/mman.h>
#include <sys/pmc.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <gelf.h>
#include <libgen.h>
#include <limits.h>
#include <netdb.h>
#include <pmc.h>
#include <pmclog.h>
#include <sysexits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "pmcstat.h"
#include "pmcstat_log.h"
#include "pmcpl_annotate.h"
/*
* Record a callchain.
*/
void
pmcpl_annotate_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr,
uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu)
{
struct pmcstat_pcmap *map;
struct pmcstat_symbol *sym;
uintfptr_t newpc;
struct pmcstat_image *image;
(void) pmcr; (void) nsamples; (void) usermode; (void) cpu;
map = pmcstat_process_find_map(usermode ? pp : pmcstat_kernproc, cc[0]);
if (map == NULL) {
/* Unknown offset. */
pmcstat_stats.ps_samples_unknown_offset++;
return;
}
assert(cc[0] >= map->ppm_lowpc && cc[0] < map->ppm_highpc);
image = map->ppm_image;
newpc = cc[0] - (map->ppm_lowpc +
(image->pi_vaddr - image->pi_start));
sym = pmcstat_symbol_search(image, newpc);
if (sym == NULL)
return;
fprintf(args.pa_graphfile, "%p %s 0x%jx 0x%jx\n",
(void *)cc[0],
pmcstat_string_unintern(sym->ps_name),
(uintmax_t)(sym->ps_start +
image->pi_vaddr), (uintmax_t)(sym->ps_end +
image->pi_vaddr));
}
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