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_macinfo.c 2074 2011-10-27 03:34:33Z jkoshy $"); 30 31 char * 32 dwarf_find_macro_value_start(char *macro_string) 33 { 34 char *p; 35 36 if (macro_string == NULL) 37 return (NULL); 38 39 p = macro_string; 40 while (*p != '\0' && *p != ' ') 41 p++; 42 if (*p == ' ') 43 p++; 44 45 return (p); 46 } 47 48 int 49 dwarf_get_macro_details(Dwarf_Debug dbg, Dwarf_Off offset, 50 Dwarf_Unsigned max_count, Dwarf_Signed *entry_cnt, 51 Dwarf_Macro_Details **details, Dwarf_Error *error) 52 { 53 Dwarf_MacroSet ms; 54 Dwarf_Unsigned cnt; 55 int i; 56 57 if (dbg == NULL || entry_cnt == NULL || details == NULL) { 58 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); 59 return (DW_DLV_ERROR); 60 } 61 62 if (STAILQ_EMPTY(&dbg->dbg_mslist)) { 63 if (_dwarf_macinfo_init(dbg, error) != DW_DLE_NONE) 64 return (DW_DLV_ERROR); 65 if (STAILQ_EMPTY(&dbg->dbg_mslist)) { 66 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); 67 return (DW_DLV_NO_ENTRY); 68 } 69 } 70 71 STAILQ_FOREACH(ms, &dbg->dbg_mslist, ms_next) { 72 for (i = 0; (Dwarf_Unsigned) i < ms->ms_cnt; i++) 73 if (ms->ms_mdlist[i].dmd_offset == offset) { 74 cnt = ms->ms_cnt - i; 75 if (max_count != 0 && cnt > max_count) 76 cnt = max_count; 77 78 *details = &ms->ms_mdlist[i]; 79 *entry_cnt = cnt; 80 81 return (DW_DLV_OK); 82 } 83 } 84 85 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); 86 87 return (DW_DLV_NO_ENTRY); 88 } 89