File: [local] / prex-old / boot / i386 / i386 / elf_reloc.c (download)
Revision 1.1.1.1.2.1, Wed Aug 13 16:12:20 2008 UTC (15 years, 9 months ago) by nbrk
Branch: PREX_0_8_BASE
Changes since 1.1.1.1: +10 -4 lines
Prex 0.8.0 has been released. Branch off from vanilla PREX_0_7_BASE preparing
the tree for backporting my changes.
|
/*-
* Copyright (c) 2006, Kohsuke Ohtani
* 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.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*/
#include <boot.h>
#include <sys/elf.h>
#include <prex/bootinfo.h>
#include <platform.h>
#ifdef DEBUG_ELF
#define DPRINTF(a) printf a
#else
#define DPRINTF(a)
#endif
int
relocate_rel(Elf32_Rel *rel, Elf32_Addr sym_val, char *target_sect)
{
Elf32_Addr *where;
where = (Elf32_Addr *)(target_sect + rel->r_offset);
switch (ELF32_R_TYPE(rel->r_info)) {
case R_386_NONE:
break;
case R_386_32:
*where += (Elf32_Addr)phys_to_virt(sym_val);
DPRINTF(("R_386_32: %x -> %x\n", where, *where));
break;
case R_386_PC32:
*where += sym_val - (Elf32_Addr)where;
DPRINTF(("R_386_PC32: %x -> %x\n", where, *where));
break;
default:
panic("relocation fail");
return -1;
}
return 0;
}
int
relocate_rela(Elf32_Rela *rela, Elf32_Addr sym_val, char *target_sec)
{
panic("invalid relocation type");
return -1;
}