1*fcf53d9bSJohn Marino /* 2*fcf53d9bSJohn Marino * Copyright (c) 2010 Konstantin Belousov <kib@freebsd.org> 3*fcf53d9bSJohn Marino * All rights reserved. 4*fcf53d9bSJohn Marino * 5*fcf53d9bSJohn Marino * Redistribution and use in source and binary forms, with or without 6*fcf53d9bSJohn Marino * modification, are permitted provided that the following conditions 7*fcf53d9bSJohn Marino * are met: 8*fcf53d9bSJohn Marino * 1. Redistributions of source code must retain the above copyright 9*fcf53d9bSJohn Marino * notice, this list of conditions and the following disclaimer. 10*fcf53d9bSJohn Marino * 2. Neither the name of the author nor the names of any co-contributors 11*fcf53d9bSJohn Marino * may be used to endorse or promote products derived from this software 12*fcf53d9bSJohn Marino * without specific prior written permission. 13*fcf53d9bSJohn Marino * 14*fcf53d9bSJohn Marino * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15*fcf53d9bSJohn Marino * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16*fcf53d9bSJohn Marino * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17*fcf53d9bSJohn Marino * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18*fcf53d9bSJohn Marino * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19*fcf53d9bSJohn Marino * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20*fcf53d9bSJohn Marino * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21*fcf53d9bSJohn Marino * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22*fcf53d9bSJohn Marino * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23*fcf53d9bSJohn Marino * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24*fcf53d9bSJohn Marino * SUCH DAMAGE. 25*fcf53d9bSJohn Marino * 26*fcf53d9bSJohn Marino * $FreeBSD: head/lib/libc/gen/elf_utils.c 217154 2011-01-08 17:13:43Z kib $ 27*fcf53d9bSJohn Marino */ 28*fcf53d9bSJohn Marino 29*fcf53d9bSJohn Marino #include <link.h> 30*fcf53d9bSJohn Marino 31*fcf53d9bSJohn Marino int 32*fcf53d9bSJohn Marino __elf_phdr_match_addr(struct dl_phdr_info *phdr_info, void *addr) 33*fcf53d9bSJohn Marino { 34*fcf53d9bSJohn Marino const Elf_Phdr *ph; 35*fcf53d9bSJohn Marino int i; 36*fcf53d9bSJohn Marino 37*fcf53d9bSJohn Marino for (i = 0; i < phdr_info->dlpi_phnum; i++) { 38*fcf53d9bSJohn Marino ph = &phdr_info->dlpi_phdr[i]; 39*fcf53d9bSJohn Marino if (ph->p_type != PT_LOAD || (ph->p_flags & PF_X) == 0) 40*fcf53d9bSJohn Marino continue; 41*fcf53d9bSJohn Marino if (phdr_info->dlpi_addr + ph->p_vaddr <= (uintptr_t)addr && 42*fcf53d9bSJohn Marino (uintptr_t)addr + sizeof(addr) < phdr_info->dlpi_addr + 43*fcf53d9bSJohn Marino ph->p_vaddr + ph->p_memsz) 44*fcf53d9bSJohn Marino break; 45*fcf53d9bSJohn Marino } 46*fcf53d9bSJohn Marino return (i != phdr_info->dlpi_phnum); 47*fcf53d9bSJohn Marino } 48