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147 lines
3.8 KiB
C
147 lines
3.8 KiB
C
/*-
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* Copyright (c) 2003-2008 Joseph Koshy
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* Copyright (c) 2017 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* This software was developed by BAE Systems, the University of Cambridge
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* Computer Laboratory, and Memorial University under DARPA/AFRL contract
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* FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
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* (TC) research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <sys/cpuset.h>
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#include <sys/event.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/module.h>
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#include <sys/pmc.h>
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#include <assert.h>
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#include <err.h>
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#include <pmc.h>
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#include <pmclog.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "libpmcstat.h"
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struct pmcstat_symbol *
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pmcstat_symbol_search_by_name(struct pmcstat_process *pp,
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const char *pi_name, const char *name, uintptr_t *addr_start,
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uintptr_t *addr_end)
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{
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struct pmcstat_symbol *sym;
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struct pmcstat_image *image;
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struct pmcstat_pcmap *pcm;
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const char *name1;
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const char *name2;
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bool found;
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size_t i;
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found = 0;
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if (pp == NULL)
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return (NULL);
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TAILQ_FOREACH(pcm, &pp->pp_map, ppm_next) {
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image = pcm->ppm_image;
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if (image->pi_name == NULL)
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continue;
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name1 = pmcstat_string_unintern(image->pi_name);
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if (strcmp(name1, pi_name) == 0) {
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found = 1;
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break;
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}
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}
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if (!found || image->pi_symbols == NULL)
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return (NULL);
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found = 0;
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for (i = 0; i < image->pi_symcount; i++) {
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sym = &image->pi_symbols[i];
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name2 = pmcstat_string_unintern(sym->ps_name);
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if (strcmp(name2, name) == 0) {
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found = 1;
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break;
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}
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}
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if (!found)
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return (NULL);
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*addr_start = (image->pi_vaddr - image->pi_start +
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pcm->ppm_lowpc + sym->ps_start);
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*addr_end = (image->pi_vaddr - image->pi_start +
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pcm->ppm_lowpc + sym->ps_end);
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return (sym);
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}
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/*
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* Helper function.
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*/
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int
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pmcstat_symbol_compare(const void *a, const void *b)
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{
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const struct pmcstat_symbol *sym1, *sym2;
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sym1 = (const struct pmcstat_symbol *) a;
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sym2 = (const struct pmcstat_symbol *) b;
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if (sym1->ps_end <= sym2->ps_start)
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return (-1);
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if (sym1->ps_start >= sym2->ps_end)
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return (1);
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return (0);
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}
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/*
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* Map an address to a symbol in an image.
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*/
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struct pmcstat_symbol *
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pmcstat_symbol_search(struct pmcstat_image *image, uintfptr_t addr)
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{
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struct pmcstat_symbol sym;
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if (image->pi_symbols == NULL)
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return (NULL);
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sym.ps_name = NULL;
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sym.ps_start = addr;
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sym.ps_end = addr + 1;
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return (bsearch((void *) &sym, image->pi_symbols,
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image->pi_symcount, sizeof(struct pmcstat_symbol),
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pmcstat_symbol_compare));
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}
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