165 lines
3.5 KiB
C
165 lines
3.5 KiB
C
/*-
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* Copyright (c) 2009 Kai Wang
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "_libdwarf.h"
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ELFTC_VCSID("$Id: libdwarf_elf_access.c 2070 2011-10-27 03:05:32Z jkoshy $");
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int
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_dwarf_elf_get_section_info(void *obj, Dwarf_Half ndx,
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Dwarf_Obj_Access_Section *ret_section, int *error)
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{
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Dwarf_Elf_Object *e;
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GElf_Shdr *sh;
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e = obj;
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assert(e != NULL);
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if (ret_section == NULL) {
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if (error)
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*error = DW_DLE_ARGUMENT;
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return (DW_DLV_ERROR);
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}
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if (ndx >= e->eo_seccnt) {
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if (error)
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*error = DW_DLE_NO_ENTRY;
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return (DW_DLV_NO_ENTRY);
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}
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sh = &e->eo_shdr[ndx];
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ret_section->addr = sh->sh_addr;
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ret_section->size = sh->sh_size;
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ret_section->name = elf_strptr(e->eo_elf, e->eo_strndx, sh->sh_name);
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if (ret_section->name == NULL) {
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if (error)
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*error = DW_DLE_ELF;
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return (DW_DLV_ERROR);
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}
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return (DW_DLV_OK);
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}
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Dwarf_Endianness
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_dwarf_elf_get_byte_order(void *obj)
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{
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Dwarf_Elf_Object *e;
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e = obj;
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assert(e != NULL);
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switch (e->eo_ehdr.e_ident[EI_DATA]) {
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case ELFDATA2MSB:
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return (DW_OBJECT_MSB);
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case ELFDATA2LSB:
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case ELFDATANONE:
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default:
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return (DW_OBJECT_LSB);
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}
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}
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Dwarf_Small
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_dwarf_elf_get_length_size(void *obj)
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{
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Dwarf_Elf_Object *e;
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e = obj;
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assert(e != NULL);
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if (gelf_getclass(e->eo_elf) == ELFCLASS32)
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return (4);
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else if (e->eo_ehdr.e_machine == EM_MIPS)
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return (8);
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else
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return (4);
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}
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Dwarf_Small
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_dwarf_elf_get_pointer_size(void *obj)
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{
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Dwarf_Elf_Object *e;
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e = obj;
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assert(e != NULL);
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if (gelf_getclass(e->eo_elf) == ELFCLASS32)
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return (4);
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else
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return (8);
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}
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Dwarf_Unsigned
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_dwarf_elf_get_section_count(void *obj)
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{
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Dwarf_Elf_Object *e;
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e = obj;
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assert(e != NULL);
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return (e->eo_seccnt);
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}
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int
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_dwarf_elf_load_section(void *obj, Dwarf_Half ndx, Dwarf_Small** ret_data,
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int *error)
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{
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Dwarf_Elf_Object *e;
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Dwarf_Elf_Data *ed;
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e = obj;
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assert(e != NULL);
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if (ret_data == NULL) {
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if (error)
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*error = DW_DLE_ARGUMENT;
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return (DW_DLV_ERROR);
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}
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if (ndx >= e->eo_seccnt) {
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if (error)
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*error = DW_DLE_NO_ENTRY;
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return (DW_DLV_NO_ENTRY);
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}
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ed = &e->eo_data[ndx];
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if (ed->ed_alloc != NULL)
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*ret_data = ed->ed_alloc;
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else {
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if (ed->ed_data == NULL) {
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if (error)
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*error = DW_DLE_NO_ENTRY;
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return (DW_DLV_NO_ENTRY);
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}
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*ret_data = ed->ed_data->d_buf;
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}
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return (DW_DLV_OK);
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}
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