2 * Copyright (c) 2005 Peter Grehan.
3 * Copyright 1996-1998 John D. Polstra.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/types.h>
31 #include <machine/elf.h>
40 * Apply relocations to the values obtained from the file. `relbase' is the
41 * target relocation address of the section, and `dataoff/len' is the region
42 * that is to be relocated, and has been copied to *dest
45 ef_reloc(struct elf_file *ef, const void *reldata, int reltype, Elf_Off relbase,
46 Elf_Off dataoff, size_t len, void *dest)
48 Elf_Addr *where, addend;
52 if (reltype != EF_RELOC_RELA)
55 rela = (const Elf_Rela *)reldata;
56 where = (Elf_Addr *) ((Elf_Off)dest - dataoff + rela->r_offset);
57 addend = rela->r_addend;
58 rtype = ELF_R_TYPE(rela->r_info);
60 if ((char *)where < (char *)dest || (char *)where >= (char *)dest + len)
64 case R_AARCH64_RELATIVE:
65 *where = relbase + addend;
70 warnx("unhandled relocation type %lu", rtype);