1f5e45e53SAndrew Turner /*- 2f5e45e53SAndrew Turner * Copyright (c) 2005 Peter Grehan. 3f5e45e53SAndrew Turner * Copyright 1996-1998 John D. Polstra. 4f5e45e53SAndrew Turner * All rights reserved. 5f5e45e53SAndrew Turner * 6f5e45e53SAndrew Turner * Redistribution and use in source and binary forms, with or without 7f5e45e53SAndrew Turner * modification, are permitted provided that the following conditions 8f5e45e53SAndrew Turner * are met: 9f5e45e53SAndrew Turner * 1. Redistributions of source code must retain the above copyright 10f5e45e53SAndrew Turner * notice, this list of conditions and the following disclaimer. 11f5e45e53SAndrew Turner * 2. Redistributions in binary form must reproduce the above copyright 12f5e45e53SAndrew Turner * notice, this list of conditions and the following disclaimer in the 13f5e45e53SAndrew Turner * documentation and/or other materials provided with the distribution. 14f5e45e53SAndrew Turner * 15f5e45e53SAndrew Turner * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16f5e45e53SAndrew Turner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17f5e45e53SAndrew Turner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18f5e45e53SAndrew Turner * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19f5e45e53SAndrew Turner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20f5e45e53SAndrew Turner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21f5e45e53SAndrew Turner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22f5e45e53SAndrew Turner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23f5e45e53SAndrew Turner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24f5e45e53SAndrew Turner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25f5e45e53SAndrew Turner * SUCH DAMAGE. 26f5e45e53SAndrew Turner */ 27f5e45e53SAndrew Turner 280299afdfSJohn Baldwin #include <sys/endian.h> 29f5e45e53SAndrew Turner 30f5e45e53SAndrew Turner #include <err.h> 31f5e45e53SAndrew Turner #include <errno.h> 320299afdfSJohn Baldwin #include <gelf.h> 33f5e45e53SAndrew Turner 34f5e45e53SAndrew Turner #include "ef.h" 35f5e45e53SAndrew Turner 36f5e45e53SAndrew Turner /* 37f5e45e53SAndrew Turner * Apply relocations to the values obtained from the file. `relbase' is the 38f5e45e53SAndrew Turner * target relocation address of the section, and `dataoff/len' is the region 39f5e45e53SAndrew Turner * that is to be relocated, and has been copied to *dest 40f5e45e53SAndrew Turner */ 410299afdfSJohn Baldwin static int 420299afdfSJohn Baldwin ef_aarch64_reloc(struct elf_file *ef, const void *reldata, Elf_Type reltype, 430299afdfSJohn Baldwin GElf_Addr relbase, GElf_Addr dataoff, size_t len, void *dest) 44f5e45e53SAndrew Turner { 450299afdfSJohn Baldwin char *where; 460299afdfSJohn Baldwin Elf64_Addr addend; 470299afdfSJohn Baldwin GElf_Size rtype; 480299afdfSJohn Baldwin const GElf_Rela *rela; 49f5e45e53SAndrew Turner 500299afdfSJohn Baldwin if (reltype != ELF_T_RELA) 51f5e45e53SAndrew Turner return (EINVAL); 52f5e45e53SAndrew Turner 530299afdfSJohn Baldwin rela = (const GElf_Rela *)reldata; 540299afdfSJohn Baldwin where = (char *)dest - dataoff + rela->r_offset; 55f5e45e53SAndrew Turner addend = rela->r_addend; 560299afdfSJohn Baldwin rtype = GELF_R_TYPE(rela->r_info); 57f5e45e53SAndrew Turner 580299afdfSJohn Baldwin if (where < (char *)dest || where >= (char *)dest + len) 59f5e45e53SAndrew Turner return (0); 60f5e45e53SAndrew Turner 61f5e45e53SAndrew Turner switch(rtype) { 62f5e45e53SAndrew Turner case R_AARCH64_RELATIVE: 630299afdfSJohn Baldwin le64enc(where, relbase + addend); 64f5e45e53SAndrew Turner break; 65f5e45e53SAndrew Turner case R_AARCH64_ABS64: 66f5e45e53SAndrew Turner break; 67f5e45e53SAndrew Turner default: 68894f3f48SJohn Baldwin warnx("unhandled relocation type %d", (int)rtype); 69f5e45e53SAndrew Turner break; 70f5e45e53SAndrew Turner } 71f5e45e53SAndrew Turner return (0); 72f5e45e53SAndrew Turner } 730299afdfSJohn Baldwin 740299afdfSJohn Baldwin ELF_RELOC(ELFCLASS64, ELFDATA2LSB, EM_AARCH64, ef_aarch64_reloc); 75