1 /* Return source file information of CU. 2 Copyright (C) 2004 Red Hat, Inc. 3 Written by Ulrich Drepper <drepper (at) redhat.com>, 2004. 4 5 This program is Open Source software; you can redistribute it and/or 6 modify it under the terms of the Open Software License version 1.0 as 7 published by the Open Source Initiative. 8 9 You should have received a copy of the Open Software License along 10 with this program; if not, you may obtain a copy of the Open Software 11 License version 1.0 from http://www.opensource.org/licenses/osl.php or 12 by writing the Open Source Initiative c/o Lawrence Rosen, Esq., 13 3001 King Ranch Road, Ukiah, CA 95482. */ 14 15 #ifdef HAVE_CONFIG_H 16 # include <config.h> 17 #endif 18 19 #include <assert.h> 20 #include <dwarf.h> 21 #include "libdwP.h" 22 23 24 int 25 dwarf_getsrcfiles (Dwarf_Die *cudie, Dwarf_Files **files, size_t *nfiles) 26 { 27 if (unlikely (cudie == NULL || dwarf_tag (cudie) != DW_TAG_compile_unit)) 28 return -1; 29 30 int res = -1; 31 32 /* Get the information if it is not already known. */ 33 struct Dwarf_CU *const cu = cudie->cu; 34 if (cu->lines == NULL) 35 { 36 Dwarf_Lines *lines; 37 size_t nlines; 38 39 /* Let the more generic function do the work. It'll create more 40 data but that will be needed in an real program anyway. */ 41 res = dwarf_getsrclines (cudie, &lines, &nlines); 42 } 43 else if (cu->files != (void *) -1l) 44 /* We already have the information. */ 45 res = 0; 46 47 if (likely (res == 0)) 48 { 49 assert (cu->files != NULL && cu->files != (void *) -1l); 50 *files = cu->files; 51 if (nfiles != NULL) 52 *nfiles = cu->files->nfiles; 53 } 54 55 // XXX Eventually: unlocking here. 56 57 return res; 58 } 59
