1260684Skaiw/*- 2260684Skaiw * Copyright (c) 2009 Kai Wang 3260684Skaiw * All rights reserved. 4260684Skaiw * 5260684Skaiw * Redistribution and use in source and binary forms, with or without 6260684Skaiw * modification, are permitted provided that the following conditions 7260684Skaiw * are met: 8260684Skaiw * 1. Redistributions of source code must retain the above copyright 9260684Skaiw * notice, this list of conditions and the following disclaimer. 10260684Skaiw * 2. Redistributions in binary form must reproduce the above copyright 11260684Skaiw * notice, this list of conditions and the following disclaimer in the 12260684Skaiw * documentation and/or other materials provided with the distribution. 13260684Skaiw * 14260684Skaiw * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15260684Skaiw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16260684Skaiw * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17260684Skaiw * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18260684Skaiw * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19260684Skaiw * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20260684Skaiw * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21260684Skaiw * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22260684Skaiw * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23260684Skaiw * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24260684Skaiw * SUCH DAMAGE. 25260684Skaiw */ 26260684Skaiw 27260684Skaiw#include "_libdwarf.h" 28260684Skaiw 29260684SkaiwELFTC_VCSID("$Id: libdwarf_elf_access.c 2070 2011-10-27 03:05:32Z jkoshy $"); 30260684Skaiw 31260684Skaiwint 32260684Skaiw_dwarf_elf_get_section_info(void *obj, Dwarf_Half ndx, 33260684Skaiw Dwarf_Obj_Access_Section *ret_section, int *error) 34260684Skaiw{ 35260684Skaiw Dwarf_Elf_Object *e; 36260684Skaiw GElf_Shdr *sh; 37260684Skaiw 38260684Skaiw e = obj; 39260684Skaiw assert(e != NULL); 40260684Skaiw 41260684Skaiw if (ret_section == NULL) { 42260684Skaiw if (error) 43260684Skaiw *error = DW_DLE_ARGUMENT; 44260684Skaiw return (DW_DLV_ERROR); 45260684Skaiw } 46260684Skaiw 47260684Skaiw if (ndx >= e->eo_seccnt) { 48260684Skaiw if (error) 49260684Skaiw *error = DW_DLE_NO_ENTRY; 50260684Skaiw return (DW_DLV_NO_ENTRY); 51260684Skaiw } 52260684Skaiw 53260684Skaiw sh = &e->eo_shdr[ndx]; 54260684Skaiw 55260684Skaiw ret_section->addr = sh->sh_addr; 56260684Skaiw ret_section->size = sh->sh_size; 57260684Skaiw 58260684Skaiw ret_section->name = elf_strptr(e->eo_elf, e->eo_strndx, sh->sh_name); 59260684Skaiw if (ret_section->name == NULL) { 60260684Skaiw if (error) 61260684Skaiw *error = DW_DLE_ELF; 62260684Skaiw return (DW_DLV_ERROR); 63260684Skaiw } 64260684Skaiw 65260684Skaiw return (DW_DLV_OK); 66260684Skaiw} 67260684Skaiw 68260684SkaiwDwarf_Endianness 69260684Skaiw_dwarf_elf_get_byte_order(void *obj) 70260684Skaiw{ 71260684Skaiw Dwarf_Elf_Object *e; 72260684Skaiw 73260684Skaiw e = obj; 74260684Skaiw assert(e != NULL); 75260684Skaiw 76260684Skaiw switch (e->eo_ehdr.e_ident[EI_DATA]) { 77260684Skaiw case ELFDATA2MSB: 78260684Skaiw return (DW_OBJECT_MSB); 79260684Skaiw 80260684Skaiw case ELFDATA2LSB: 81260684Skaiw case ELFDATANONE: 82260684Skaiw default: 83260684Skaiw return (DW_OBJECT_LSB); 84260684Skaiw } 85260684Skaiw} 86260684Skaiw 87260684SkaiwDwarf_Small 88260684Skaiw_dwarf_elf_get_length_size(void *obj) 89260684Skaiw{ 90260684Skaiw Dwarf_Elf_Object *e; 91260684Skaiw 92260684Skaiw e = obj; 93260684Skaiw assert(e != NULL); 94260684Skaiw 95260684Skaiw if (gelf_getclass(e->eo_elf) == ELFCLASS32) 96260684Skaiw return (4); 97260684Skaiw else if (e->eo_ehdr.e_machine == EM_MIPS) 98260684Skaiw return (8); 99260684Skaiw else 100260684Skaiw return (4); 101260684Skaiw} 102260684Skaiw 103260684SkaiwDwarf_Small 104260684Skaiw_dwarf_elf_get_pointer_size(void *obj) 105260684Skaiw{ 106260684Skaiw Dwarf_Elf_Object *e; 107260684Skaiw 108260684Skaiw e = obj; 109260684Skaiw assert(e != NULL); 110260684Skaiw 111260684Skaiw if (gelf_getclass(e->eo_elf) == ELFCLASS32) 112260684Skaiw return (4); 113260684Skaiw else 114260684Skaiw return (8); 115260684Skaiw} 116260684Skaiw 117260684SkaiwDwarf_Unsigned 118260684Skaiw_dwarf_elf_get_section_count(void *obj) 119260684Skaiw{ 120260684Skaiw Dwarf_Elf_Object *e; 121260684Skaiw 122260684Skaiw e = obj; 123260684Skaiw assert(e != NULL); 124260684Skaiw 125260684Skaiw return (e->eo_seccnt); 126260684Skaiw} 127260684Skaiw 128260684Skaiwint 129260684Skaiw_dwarf_elf_load_section(void *obj, Dwarf_Half ndx, Dwarf_Small** ret_data, 130260684Skaiw int *error) 131260684Skaiw{ 132260684Skaiw Dwarf_Elf_Object *e; 133260684Skaiw Dwarf_Elf_Data *ed; 134260684Skaiw 135260684Skaiw e = obj; 136260684Skaiw assert(e != NULL); 137260684Skaiw 138260684Skaiw if (ret_data == NULL) { 139260684Skaiw if (error) 140260684Skaiw *error = DW_DLE_ARGUMENT; 141260684Skaiw return (DW_DLV_ERROR); 142260684Skaiw } 143260684Skaiw 144260684Skaiw if (ndx >= e->eo_seccnt) { 145260684Skaiw if (error) 146260684Skaiw *error = DW_DLE_NO_ENTRY; 147260684Skaiw return (DW_DLV_NO_ENTRY); 148260684Skaiw } 149260684Skaiw 150260684Skaiw ed = &e->eo_data[ndx]; 151260684Skaiw 152260684Skaiw if (ed->ed_alloc != NULL) 153260684Skaiw *ret_data = ed->ed_alloc; 154260684Skaiw else { 155260684Skaiw if (ed->ed_data == NULL) { 156260684Skaiw if (error) 157260684Skaiw *error = DW_DLE_NO_ENTRY; 158260684Skaiw return (DW_DLV_NO_ENTRY); 159260684Skaiw } 160260684Skaiw *ret_data = ed->ed_data->d_buf; 161260684Skaiw } 162260684Skaiw 163260684Skaiw return (DW_DLV_OK); 164260684Skaiw} 165