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/*-
* Copyright (c) 2003 Jake Burkholder.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <machine/elf.h>
#include <err.h>
#include <string.h>
#include "ef.h"
/*
* Apply relocations to the values we got from the file. `relbase' is the
* target relocation address of the section, and `dataoff' is the target
* relocation address of the data in `dest'.
*/
int
ef_reloc(struct elf_file *ef, const void *reldata, int reltype, Elf_Off relbase,
Elf_Off dataoff, size_t len, void *dest)
{
const Elf_Rela *a;
Elf_Size w;
switch (reltype) {
case EF_RELOC_RELA:
a = reldata;
if (relbase + a->r_offset >= dataoff && relbase + a->r_offset <
dataoff + len) {
switch (ELF_R_TYPE(a->r_info)) {
case R_SPARC_RELATIVE:
w = a->r_addend + relbase;
memcpy((u_char *)dest + (relbase + a->r_offset -
dataoff), &w, sizeof(w));
break;
default:
warnx("unhandled relocation type %u",
(unsigned int)ELF_R_TYPE(a->r_info));
break;
}
}
break;
}
return (0);
}
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