text: /*	$NetBSD: gelf_move.c,v 1.2 2014/03/09 16:58:04 christos Exp $	*/
  
  /*-
   * 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.
   */
  
  #if HAVE_NBTOOL_CONFIG_H
  # include "nbtool_config.h"
  #endif
  
  #include <sys/cdefs.h>
  
  #include <assert.h>
  #include <gelf.h>
  #include <limits.h>
  
  #include "_libelf.h"
  
  __RCSID("$NetBSD: gelf_move.c,v 1.2 2014/03/09 16:58:04 christos Exp $");
  ELFTC_VCSID("Id: gelf_move.c 2272 2011-12-03 17:07:31Z jkoshy ");
  
  GElf_Move *
  gelf_getmove(Elf_Data *ed, int ndx, GElf_Move *dst)
  {
  	int ec;
  	Elf *e;
  	size_t msz;
  	Elf_Scn *scn;
  	uint32_t sh_type;
  	Elf32_Move *move32;
  	Elf64_Move *move64;
  	struct _Libelf_Data *d;
  
  	d = (struct _Libelf_Data *) ed;
  
  	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_data.d_size) {
  		LIBELF_SET_ERROR(ARGUMENT, 0);
  		return (NULL);
  	}
  
  	if (ec == ELFCLASS32) {
  
  		move32 = (Elf32_Move *) d->d_data.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_data.d_buf + ndx;
  
  		*dst = *move64;
  	}
  
  	return (dst);
  }
  
  int
  gelf_update_move(Elf_Data *ed, int ndx, GElf_Move *gm)
  {
  	int ec;
  	Elf *e;
  	size_t msz;
  	Elf_Scn *scn;
  	uint32_t sh_type;
  	Elf32_Move *move32;
  	Elf64_Move *move64;
  	struct _Libelf_Data *d;
  
  	d = (struct _Libelf_Data *) ed;
  
  	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_data.d_size) {
  		LIBELF_SET_ERROR(ARGUMENT, 0);
  		return (0);
  	}
  
  	if (ec == ELFCLASS32) {
  		move32 = (Elf32_Move *) d->d_data.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_data.d_buf + ndx;
  
  		*move64 = *gm;
  	}
  
  	return (1);
  }
  