dwarf_macinfo.c revision 1.3
1/* $NetBSD: dwarf_macinfo.c,v 1.3 2016/02/20 02:43:41 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2009,2011 Kai Wang 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include "_libdwarf.h" 30 31__RCSID("$NetBSD: dwarf_macinfo.c,v 1.3 2016/02/20 02:43:41 christos Exp $"); 32ELFTC_VCSID("Id: dwarf_macinfo.c 2074 2011-10-27 03:34:33Z jkoshy "); 33 34char * 35dwarf_find_macro_value_start(char *macro_string) 36{ 37 char *p; 38 39 if (macro_string == NULL) 40 return (NULL); 41 42 p = macro_string; 43 while (*p != '\0' && *p != ' ') 44 p++; 45 if (*p == ' ') 46 p++; 47 48 return (p); 49} 50 51int 52dwarf_get_macro_details(Dwarf_Debug dbg, Dwarf_Off offset, 53 Dwarf_Unsigned max_count, Dwarf_Signed *entry_cnt, 54 Dwarf_Macro_Details **details, Dwarf_Error *error) 55{ 56 Dwarf_MacroSet ms; 57 Dwarf_Unsigned cnt; 58 int i; 59 60 if (dbg == NULL || entry_cnt == NULL || details == NULL) { 61 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); 62 return (DW_DLV_ERROR); 63 } 64 65 if (STAILQ_EMPTY(&dbg->dbg_mslist)) { 66 if (_dwarf_macinfo_init(dbg, error) != DW_DLE_NONE) 67 return (DW_DLV_ERROR); 68 if (STAILQ_EMPTY(&dbg->dbg_mslist)) { 69 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); 70 return (DW_DLV_NO_ENTRY); 71 } 72 } 73 74 STAILQ_FOREACH(ms, &dbg->dbg_mslist, ms_next) { 75 for (i = 0; (Dwarf_Unsigned) i < ms->ms_cnt; i++) 76 if (ms->ms_mdlist[i].dmd_offset == offset) { 77 cnt = ms->ms_cnt - i; 78 if (max_count != 0 && cnt > max_count) 79 cnt = max_count; 80 81 *details = &ms->ms_mdlist[i]; 82 *entry_cnt = cnt; 83 84 return (DW_DLV_OK); 85 } 86 } 87 88 DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY); 89 90 return (DW_DLV_NO_ENTRY); 91} 92