1 /* Return source file information of CU. 2 Copyright (C) 2004, 2005, 2013, 2015 Red Hat, Inc. 3 This file is part of elfutils. 4 Written by Ulrich Drepper <drepper (at) redhat.com>, 2004. 5 6 This file is free software; you can redistribute it and/or modify 7 it under the terms of either 8 9 * the GNU Lesser General Public License as published by the Free 10 Software Foundation; either version 3 of the License, or (at 11 your option) any later version 12 13 or 14 15 * the GNU General Public License as published by the Free 16 Software Foundation; either version 2 of the License, or (at 17 your option) any later version 18 19 or both in parallel, as here. 20 21 elfutils is distributed in the hope that it will be useful, but 22 WITHOUT ANY WARRANTY; without even the implied warranty of 23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 24 General Public License for more details. 25 26 You should have received copies of the GNU General Public License and 27 the GNU Lesser General Public License along with this program. If 28 not, see <http://www.gnu.org/licenses/>. */ 29 30 #ifdef HAVE_CONFIG_H 31 # include <config.h> 32 #endif 33 34 #include <assert.h> 35 #include <dwarf.h> 36 #include "libdwP.h" 37 38 39 int 40 dwarf_getsrcfiles (Dwarf_Die *cudie, Dwarf_Files **files, size_t *nfiles) 41 { 42 if (cudie == NULL) 43 return -1; 44 if (! is_cudie (cudie)) 45 { 46 __libdw_seterrno (DWARF_E_NOT_CUDIE); 47 return -1; 48 } 49 50 int res = -1; 51 52 /* Get the information if it is not already known. */ 53 struct Dwarf_CU *const cu = cudie->cu; 54 if (cu->lines == NULL) 55 { 56 Dwarf_Lines *lines; 57 size_t nlines; 58 59 /* Let the more generic function do the work. It'll create more 60 data but that will be needed in an real program anyway. */ 61 res = INTUSE(dwarf_getsrclines) (cudie, &lines, &nlines); 62 } 63 else if (cu->files != (void *) -1l) 64 /* We already have the information. */ 65 res = 0; 66 67 if (likely (res == 0)) 68 { 69 assert (cu->files != NULL && cu->files != (void *) -1l); 70 *files = cu->files; 71 if (nfiles != NULL) 72 *nfiles = cu->files->nfiles; 73 } 74 75 // XXX Eventually: unlocking here. 76 77 return res; 78 } 79 INTDEF (dwarf_getsrcfiles) 80
