1109607Sjake/*- 2330449Seadler * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3330449Seadler * 4109607Sjake * Copyright (c) 2003 Jake Burkholder. 5109607Sjake * All rights reserved. 6109607Sjake * 7109607Sjake * Redistribution and use in source and binary forms, with or without 8109607Sjake * modification, are permitted provided that the following conditions 9109607Sjake * are met: 10109607Sjake * 1. Redistributions of source code must retain the above copyright 11109607Sjake * notice, this list of conditions and the following disclaimer. 12109607Sjake * 2. Redistributions in binary form must reproduce the above copyright 13109607Sjake * notice, this list of conditions and the following disclaimer in the 14109607Sjake * documentation and/or other materials provided with the distribution. 15109607Sjake * 16109607Sjake * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17109607Sjake * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18109607Sjake * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19109607Sjake * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20109607Sjake * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21109607Sjake * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22109607Sjake * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23109607Sjake * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24109607Sjake * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25109607Sjake * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26109607Sjake * SUCH DAMAGE. 27109607Sjake * 28109607Sjake * $FreeBSD: stable/11/usr.sbin/kldxref/ef_sparc64.c 330449 2018-03-05 07:26:05Z eadler $ 29109607Sjake */ 30109607Sjake 31109607Sjake#include <sys/types.h> 32109607Sjake#include <machine/elf.h> 33109607Sjake 34109607Sjake#include <err.h> 35109607Sjake#include <string.h> 36109607Sjake 37109607Sjake#include "ef.h" 38109607Sjake 39109607Sjake/* 40134450Siedowse * Apply relocations to the values we got from the file. `relbase' is the 41134450Siedowse * target relocation address of the section, and `dataoff' is the target 42134450Siedowse * relocation address of the data in `dest'. 43109607Sjake */ 44109607Sjakeint 45134450Siedowseef_reloc(struct elf_file *ef, const void *reldata, int reltype, Elf_Off relbase, 46134450Siedowse Elf_Off dataoff, size_t len, void *dest) 47109607Sjake{ 48109607Sjake const Elf_Rela *a; 49153504Smarcel Elf_Size w; 50109607Sjake 51134450Siedowse switch (reltype) { 52134358Siedowse case EF_RELOC_RELA: 53134450Siedowse a = reldata; 54134450Siedowse if (relbase + a->r_offset >= dataoff && relbase + a->r_offset < 55134450Siedowse dataoff + len) { 56109607Sjake switch (ELF_R_TYPE(a->r_info)) { 57109607Sjake case R_SPARC_RELATIVE: 58134450Siedowse w = a->r_addend + relbase; 59134450Siedowse memcpy((u_char *)dest + (relbase + a->r_offset - 60134450Siedowse dataoff), &w, sizeof(w)); 61109607Sjake break; 62109607Sjake default: 63109607Sjake warnx("unhandled relocation type %u", 64153503Smarcel (unsigned int)ELF_R_TYPE(a->r_info)); 65109607Sjake break; 66109607Sjake } 67109607Sjake } 68134358Siedowse break; 69109607Sjake } 70109607Sjake return (0); 71109607Sjake} 72