2003-01-21 03:51:53 +00:00
|
|
|
/*-
|
|
|
|
* 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"
|
|
|
|
|
|
|
|
/*
|
2004-08-28 19:31:10 +00:00
|
|
|
* 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'.
|
2003-01-21 03:51:53 +00:00
|
|
|
*/
|
|
|
|
int
|
2004-08-28 19:31:10 +00:00
|
|
|
ef_reloc(struct elf_file *ef, const void *reldata, int reltype, Elf_Off relbase,
|
|
|
|
Elf_Off dataoff, size_t len, void *dest)
|
2003-01-21 03:51:53 +00:00
|
|
|
{
|
|
|
|
const Elf_Rela *a;
|
2005-12-18 04:52:37 +00:00
|
|
|
Elf_Size w;
|
2003-01-21 03:51:53 +00:00
|
|
|
|
2004-08-28 19:31:10 +00:00
|
|
|
switch (reltype) {
|
2004-08-27 00:51:21 +00:00
|
|
|
case EF_RELOC_RELA:
|
2004-08-28 19:31:10 +00:00
|
|
|
a = reldata;
|
|
|
|
if (relbase + a->r_offset >= dataoff && relbase + a->r_offset <
|
|
|
|
dataoff + len) {
|
2003-01-21 03:51:53 +00:00
|
|
|
switch (ELF_R_TYPE(a->r_info)) {
|
|
|
|
case R_SPARC_RELATIVE:
|
2004-08-28 19:31:10 +00:00
|
|
|
w = a->r_addend + relbase;
|
|
|
|
memcpy((u_char *)dest + (relbase + a->r_offset -
|
|
|
|
dataoff), &w, sizeof(w));
|
2003-01-21 03:51:53 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
warnx("unhandled relocation type %u",
|
2005-12-18 01:38:26 +00:00
|
|
|
(unsigned int)ELF_R_TYPE(a->r_info));
|
2003-01-21 03:51:53 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2004-08-27 00:51:21 +00:00
|
|
|
break;
|
2003-01-21 03:51:53 +00:00
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|