1 /*- 2 * Copyright (c) 2009,2011 Kai Wang 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include "_libdwarf.h" 28 29 ELFTC_VCSID("$Id: dwarf_ranges.c 2075 2011-10-27 03:47:28Z jkoshy $"); 30 31 static int 32 _dwarf_get_ranges(Dwarf_Debug dbg, Dwarf_CU cu, Dwarf_Off off, 33 Dwarf_Ranges **ranges, Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt, 34 Dwarf_Error *error) 35 { 36 Dwarf_Rangelist rl; 37 int ret; 38 39 assert(cu != NULL); 40 if (_dwarf_ranges_find(dbg, off, &rl) == DW_DLE_NO_ENTRY) { 41 ret = _dwarf_ranges_add(dbg, cu, off, &rl, error); 42 if (ret != DW_DLE_NONE) 43 return (DW_DLV_ERROR); 44 } 45 46 *ranges = rl->rl_rgarray; 47 *ret_cnt = rl->rl_rglen; 48 49 if (ret_byte_cnt != NULL) 50 *ret_byte_cnt = cu->cu_pointer_size * rl->rl_rglen * 2; 51 52 return (DW_DLV_OK); 53 } 54 55 int 56 dwarf_get_ranges(Dwarf_Debug dbg, Dwarf_Off offset, Dwarf_Ranges **ranges, 57 Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt, Dwarf_Error *error) 58 { 59 60 if (dbg == NULL || ranges == NULL || ret_cnt == NULL) { 61 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); 62 return (DW_DLV_ERROR); 63 } 64 65 if (!dbg->dbg_info_loaded) { 66 if (_dwarf_info_load(dbg, 1, error) != DW_DLE_NONE) 67 return (DW_DLV_ERROR); 68 } 69 70 return (_dwarf_get_ranges(dbg, STAILQ_FIRST(&dbg->dbg_cu), offset, 71 ranges, ret_cnt, ret_byte_cnt, error)); 72 } 73 74 int 75 dwarf_get_ranges_a(Dwarf_Debug dbg, Dwarf_Off offset, Dwarf_Die die, 76 Dwarf_Ranges **ranges, Dwarf_Signed *ret_cnt, Dwarf_Unsigned *ret_byte_cnt, 77 Dwarf_Error *error) 78 { 79 80 if (dbg == NULL || die == NULL || ranges == NULL || ret_cnt == NULL) { 81 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); 82 return (DW_DLV_ERROR); 83 } 84 85 return (_dwarf_get_ranges(dbg, die->die_cu, offset, ranges, ret_cnt, 86 ret_byte_cnt, error)); 87 } 88