/*-
* Copyright (c) 2006,2008 Joseph Koshy
* 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.
*/
#include <sys/cdefs.h>
#include <assert.h>
#include <gelf.h>
#include "_libelf.h"
LIBELF_VCSID("$Id: gelf_move.c 1166 2010-09-04 00:54:36Z jkoshy $");
GElf_Move *
gelf_getmove(Elf_Data *d, int ndx, GElf_Move *dst)
{
int ec;
Elf *e;
Elf_Scn *scn;
Elf32_Move *move32;
Elf64_Move *move64;
size_t msz;
uint32_t sh_type;
if (d == NULL || ndx < 0 || dst == NULL ||
(scn = d->d_scn) == NULL ||
(e = scn->s_elf) == NULL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (NULL);
}
ec = e->e_class;
assert(ec == ELFCLASS32 || ec == ELFCLASS64);
if (ec == ELFCLASS32)
sh_type = scn->s_shdr.s_shdr32.sh_type;
else
sh_type = scn->s_shdr.s_shdr64.sh_type;
if (_libelf_xlate_shtype(sh_type) != ELF_T_MOVE) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (NULL);
}
msz = _libelf_msize(ELF_T_MOVE, ec, e->e_version);
assert(msz > 0);
if (msz * ndx >= d->d_size) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (NULL);
}
if (ec == ELFCLASS32) {
move32 = (Elf32_Move *) d->d_buf + ndx;
dst->m_value = move32->m_value;
dst->m_info = (Elf64_Xword) move32->m_info;
dst->m_poffset = (Elf64_Xword) move32->m_poffset;
dst->m_repeat = move32->m_repeat;
dst->m_stride = move32->m_stride;
} else {
move64 = (Elf64_Move *) d->d_buf + ndx;
*dst = *move64;
}
return (dst);
}
int
gelf_update_move(Elf_Data *d, int ndx, GElf_Move *gm)
{
int ec;
Elf *e;
Elf_Scn *scn;
Elf32_Move *move32;
Elf64_Move *move64;
size_t msz;
uint32_t sh_type;
if (d == NULL || ndx < 0 || gm == NULL ||
(scn = d->d_scn) == NULL ||
(e = scn->s_elf) == NULL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
ec = e->e_class;
assert(ec == ELFCLASS32 || ec == ELFCLASS64);
if (ec == ELFCLASS32)
sh_type = scn->s_shdr.s_shdr32.sh_type;
else
sh_type = scn->s_shdr.s_shdr64.sh_type;
if (_libelf_xlate_shtype(sh_type) != ELF_T_MOVE) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
msz = _libelf_msize(ELF_T_MOVE, ec, e->e_version);
assert(msz > 0);
if (msz * ndx >= d->d_size) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (ec == ELFCLASS32) {
move32 = (Elf32_Move *) d->d_buf + ndx;
move32->m_value = gm->m_value;
LIBELF_COPY_U32(move32, gm, m_info);
LIBELF_COPY_U32(move32, gm, m_poffset);
move32->m_repeat = gm->m_repeat;
move32->m_stride = gm->m_stride;
} else {
move64 = (Elf64_Move *) d->d_buf + ndx;
*move64 = *gm;
}
return (1);
}
