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/*-
* Copyright (c) 2003-2008 Joseph Koshy
* Copyright (c) 2017 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* This software was developed by BAE Systems, the University of Cambridge
* Computer Laboratory, and Memorial University under DARPA/AFRL contract
* FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
* (TC) research program.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/cpuset.h>
#include <sys/event.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/module.h>
#include <sys/pmc.h>
#include <assert.h>
#include <err.h>
#include <pmc.h>
#include <pmclog.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libpmcstat.h"
struct pmcstat_symbol *
pmcstat_symbol_search_by_name(struct pmcstat_process *pp,
const char *pi_name, const char *name, uintptr_t *addr_start,
uintptr_t *addr_end)
{
struct pmcstat_symbol *sym;
struct pmcstat_image *image;
struct pmcstat_pcmap *pcm;
const char *name1;
const char *name2;
bool found;
size_t i;
found = 0;
if (pp == NULL)
return (NULL);
TAILQ_FOREACH(pcm, &pp->pp_map, ppm_next) {
image = pcm->ppm_image;
if (image->pi_name == NULL)
continue;
name1 = pmcstat_string_unintern(image->pi_name);
if (strcmp(name1, pi_name) == 0) {
found = 1;
break;
}
}
if (!found || image->pi_symbols == NULL)
return (NULL);
found = 0;
for (i = 0; i < image->pi_symcount; i++) {
sym = &image->pi_symbols[i];
name2 = pmcstat_string_unintern(sym->ps_name);
if (strcmp(name2, name) == 0) {
found = 1;
break;
}
}
if (!found)
return (NULL);
*addr_start = (image->pi_vaddr - image->pi_start +
pcm->ppm_lowpc + sym->ps_start);
*addr_end = (image->pi_vaddr - image->pi_start +
pcm->ppm_lowpc + sym->ps_end);
return (sym);
}
/*
* Helper function.
*/
int
pmcstat_symbol_compare(const void *a, const void *b)
{
const struct pmcstat_symbol *sym1, *sym2;
sym1 = (const struct pmcstat_symbol *) a;
sym2 = (const struct pmcstat_symbol *) b;
if (sym1->ps_end <= sym2->ps_start)
return (-1);
if (sym1->ps_start >= sym2->ps_end)
return (1);
return (0);
}
/*
* Map an address to a symbol in an image.
*/
struct pmcstat_symbol *
pmcstat_symbol_search(struct pmcstat_image *image, uintfptr_t addr)
{
struct pmcstat_symbol sym;
if (image->pi_symbols == NULL)
return (NULL);
sym.ps_name = NULL;
sym.ps_start = addr;
sym.ps_end = addr + 1;
return (bsearch((void *) &sym, image->pi_symbols,
image->pi_symcount, sizeof(struct pmcstat_symbol),
pmcstat_symbol_compare));
}
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