1164190Sjkoshy/*- 2164190Sjkoshy * Copyright (c) 2006 Joseph Koshy 3164190Sjkoshy * All rights reserved. 4164190Sjkoshy * 5164190Sjkoshy * Redistribution and use in source and binary forms, with or without 6164190Sjkoshy * modification, are permitted provided that the following conditions 7164190Sjkoshy * are met: 8164190Sjkoshy * 1. Redistributions of source code must retain the above copyright 9164190Sjkoshy * notice, this list of conditions and the following disclaimer. 10164190Sjkoshy * 2. Redistributions in binary form must reproduce the above copyright 11164190Sjkoshy * notice, this list of conditions and the following disclaimer in the 12164190Sjkoshy * documentation and/or other materials provided with the distribution. 13164190Sjkoshy * 14164190Sjkoshy * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15164190Sjkoshy * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16164190Sjkoshy * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17164190Sjkoshy * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18164190Sjkoshy * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19164190Sjkoshy * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20164190Sjkoshy * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21164190Sjkoshy * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22164190Sjkoshy * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23164190Sjkoshy * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24164190Sjkoshy * SUCH DAMAGE. 25164190Sjkoshy */ 26164190Sjkoshy 27164190Sjkoshy#include <sys/cdefs.h> 28164190Sjkoshy__FBSDID("$FreeBSD$"); 29164190Sjkoshy 30164190Sjkoshy#include <sys/limits.h> 31164190Sjkoshy 32164190Sjkoshy#include <assert.h> 33164190Sjkoshy#include <gelf.h> 34165317Sjkoshy#include <osreldate.h> 35164190Sjkoshy 36164190Sjkoshy#include "_libelf.h" 37164190Sjkoshy 38165317Sjkoshy#if __FreeBSD_version >= 700025 39165317Sjkoshy 40164190SjkoshyGElf_Move * 41164190Sjkoshygelf_getmove(Elf_Data *d, int ndx, GElf_Move *dst) 42164190Sjkoshy{ 43164190Sjkoshy int ec; 44164190Sjkoshy Elf *e; 45164190Sjkoshy Elf_Scn *scn; 46164190Sjkoshy Elf32_Move *move32; 47164190Sjkoshy Elf64_Move *move64; 48164190Sjkoshy size_t msz; 49164190Sjkoshy uint32_t sh_type; 50164190Sjkoshy 51164190Sjkoshy if (d == NULL || ndx < 0 || dst == NULL || 52164190Sjkoshy (scn = d->d_scn) == NULL || 53164190Sjkoshy (e = scn->s_elf) == NULL) { 54164190Sjkoshy LIBELF_SET_ERROR(ARGUMENT, 0); 55164190Sjkoshy return (NULL); 56164190Sjkoshy } 57164190Sjkoshy 58164190Sjkoshy ec = e->e_class; 59164190Sjkoshy assert(ec == ELFCLASS32 || ec == ELFCLASS64); 60164190Sjkoshy 61164190Sjkoshy if (ec == ELFCLASS32) 62164190Sjkoshy sh_type = scn->s_shdr.s_shdr32.sh_type; 63164190Sjkoshy else 64164190Sjkoshy sh_type = scn->s_shdr.s_shdr64.sh_type; 65164190Sjkoshy 66164190Sjkoshy if (_libelf_xlate_shtype(sh_type) != ELF_T_MOVE) { 67164190Sjkoshy LIBELF_SET_ERROR(ARGUMENT, 0); 68164190Sjkoshy return (NULL); 69164190Sjkoshy } 70164190Sjkoshy 71164190Sjkoshy msz = _libelf_msize(ELF_T_MOVE, ec, e->e_version); 72164190Sjkoshy 73164190Sjkoshy assert(msz > 0); 74164190Sjkoshy 75164190Sjkoshy if (msz * ndx >= d->d_size) { 76164190Sjkoshy LIBELF_SET_ERROR(ARGUMENT, 0); 77164190Sjkoshy return (NULL); 78164190Sjkoshy } 79164190Sjkoshy 80164190Sjkoshy if (ec == ELFCLASS32) { 81164190Sjkoshy 82164190Sjkoshy move32 = (Elf32_Move *) d->d_buf + ndx; 83164190Sjkoshy 84164190Sjkoshy dst->m_value = move32->m_value; 85164190Sjkoshy dst->m_info = (Elf64_Xword) move32->m_info; 86164190Sjkoshy dst->m_poffset = (Elf64_Xword) move32->m_poffset; 87164190Sjkoshy dst->m_repeat = move32->m_repeat; 88164190Sjkoshy dst->m_stride = move32->m_stride; 89164190Sjkoshy } else { 90164190Sjkoshy 91164190Sjkoshy move64 = (Elf64_Move *) d->d_buf + ndx; 92164190Sjkoshy 93164190Sjkoshy *dst = *move64; 94164190Sjkoshy } 95164190Sjkoshy 96164190Sjkoshy return (dst); 97164190Sjkoshy} 98164190Sjkoshy 99164190Sjkoshyint 100164190Sjkoshygelf_update_move(Elf_Data *d, int ndx, GElf_Move *gm) 101164190Sjkoshy{ 102164190Sjkoshy int ec; 103164190Sjkoshy Elf *e; 104164190Sjkoshy Elf_Scn *scn; 105164190Sjkoshy Elf32_Move *move32; 106164190Sjkoshy Elf64_Move *move64; 107164190Sjkoshy size_t msz; 108164190Sjkoshy uint32_t sh_type; 109164190Sjkoshy 110164190Sjkoshy if (d == NULL || ndx < 0 || gm == NULL || 111164190Sjkoshy (scn = d->d_scn) == NULL || 112164190Sjkoshy (e = scn->s_elf) == NULL) { 113164190Sjkoshy LIBELF_SET_ERROR(ARGUMENT, 0); 114164190Sjkoshy return (0); 115164190Sjkoshy } 116164190Sjkoshy 117164190Sjkoshy ec = e->e_class; 118164190Sjkoshy assert(ec == ELFCLASS32 || ec == ELFCLASS64); 119164190Sjkoshy 120164190Sjkoshy if (ec == ELFCLASS32) 121164190Sjkoshy sh_type = scn->s_shdr.s_shdr32.sh_type; 122164190Sjkoshy else 123164190Sjkoshy sh_type = scn->s_shdr.s_shdr64.sh_type; 124164190Sjkoshy 125164190Sjkoshy if (_libelf_xlate_shtype(sh_type) != ELF_T_MOVE) { 126164190Sjkoshy LIBELF_SET_ERROR(ARGUMENT, 0); 127164190Sjkoshy return (0); 128164190Sjkoshy } 129164190Sjkoshy 130164190Sjkoshy msz = _libelf_msize(ELF_T_MOVE, ec, e->e_version); 131164190Sjkoshy assert(msz > 0); 132164190Sjkoshy 133164190Sjkoshy if (msz * ndx >= d->d_size) { 134164190Sjkoshy LIBELF_SET_ERROR(ARGUMENT, 0); 135164190Sjkoshy return (0); 136164190Sjkoshy } 137164190Sjkoshy 138164190Sjkoshy if (ec == ELFCLASS32) { 139164190Sjkoshy move32 = (Elf32_Move *) d->d_buf + ndx; 140164190Sjkoshy 141164190Sjkoshy move32->m_value = gm->m_value; 142164190Sjkoshy LIBELF_COPY_U32(move32, gm, m_info); 143164190Sjkoshy LIBELF_COPY_U32(move32, gm, m_poffset); 144164190Sjkoshy move32->m_repeat = gm->m_repeat; 145164190Sjkoshy move32->m_stride = gm->m_stride; 146164190Sjkoshy 147164190Sjkoshy } else { 148164190Sjkoshy move64 = (Elf64_Move *) d->d_buf + ndx; 149164190Sjkoshy 150164190Sjkoshy *move64 = *gm; 151164190Sjkoshy } 152164190Sjkoshy 153164190Sjkoshy return (1); 154164190Sjkoshy} 155165317Sjkoshy 156165317Sjkoshy#endif /* __FreeBSD_version >= 700025 */ 157