1109607Sjake/*- 2109607Sjake * Copyright (c) 2003 Jake Burkholder. 3109607Sjake * All rights reserved. 4109607Sjake * 5109607Sjake * Redistribution and use in source and binary forms, with or without 6109607Sjake * modification, are permitted provided that the following conditions 7109607Sjake * are met: 8109607Sjake * 1. Redistributions of source code must retain the above copyright 9109607Sjake * notice, this list of conditions and the following disclaimer. 10109607Sjake * 2. Redistributions in binary form must reproduce the above copyright 11109607Sjake * notice, this list of conditions and the following disclaimer in the 12109607Sjake * documentation and/or other materials provided with the distribution. 13109607Sjake * 14109607Sjake * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15109607Sjake * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16109607Sjake * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17109607Sjake * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18109607Sjake * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19109607Sjake * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20109607Sjake * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21109607Sjake * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22109607Sjake * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23109607Sjake * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24109607Sjake * SUCH DAMAGE. 25109607Sjake * 26109607Sjake * $FreeBSD$ 27109607Sjake */ 28109607Sjake 29109607Sjake#include <sys/types.h> 30109607Sjake#include <machine/elf.h> 31109607Sjake 32109607Sjake#include <err.h> 33109607Sjake#include <string.h> 34109607Sjake 35109607Sjake#include "ef.h" 36109607Sjake 37109607Sjake/* 38134450Siedowse * Apply relocations to the values we got from the file. `relbase' is the 39134450Siedowse * target relocation address of the section, and `dataoff' is the target 40134450Siedowse * relocation address of the data in `dest'. 41109607Sjake */ 42109607Sjakeint 43134450Siedowseef_reloc(struct elf_file *ef, const void *reldata, int reltype, Elf_Off relbase, 44134450Siedowse Elf_Off dataoff, size_t len, void *dest) 45109607Sjake{ 46109607Sjake const Elf_Rela *a; 47153504Smarcel Elf_Size w; 48109607Sjake 49134450Siedowse switch (reltype) { 50134358Siedowse case EF_RELOC_RELA: 51134450Siedowse a = reldata; 52134450Siedowse if (relbase + a->r_offset >= dataoff && relbase + a->r_offset < 53134450Siedowse dataoff + len) { 54109607Sjake switch (ELF_R_TYPE(a->r_info)) { 55109607Sjake case R_SPARC_RELATIVE: 56134450Siedowse w = a->r_addend + relbase; 57134450Siedowse memcpy((u_char *)dest + (relbase + a->r_offset - 58134450Siedowse dataoff), &w, sizeof(w)); 59109607Sjake break; 60109607Sjake default: 61109607Sjake warnx("unhandled relocation type %u", 62153503Smarcel (unsigned int)ELF_R_TYPE(a->r_info)); 63109607Sjake break; 64109607Sjake } 65109607Sjake } 66134358Siedowse break; 67109607Sjake } 68109607Sjake return (0); 69109607Sjake} 70