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112 lines
3.0 KiB
112 lines
3.0 KiB
/* Return source file information of CU.
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Copyright (C) 2004, 2005, 2013, 2015, 2018 Red Hat, Inc.
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <assert.h>
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#include <dwarf.h>
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#include "libdwP.h"
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int
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dwarf_getsrcfiles (Dwarf_Die *cudie, Dwarf_Files **files, size_t *nfiles)
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{
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if (cudie == NULL)
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return -1;
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if (! is_cudie (cudie))
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{
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__libdw_seterrno (DWARF_E_NOT_CUDIE);
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return -1;
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}
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int res = -1;
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/* Get the information if it is not already known. */
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struct Dwarf_CU *const cu = cudie->cu;
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if (cu->files == NULL)
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{
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/* For split units there might be a simple file table (without lines).
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If not, use the one from the skeleton. */
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if (cu->unit_type == DW_UT_split_compile
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|| cu->unit_type == DW_UT_split_type)
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{
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/* We tried, assume we fail... */
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cu->files = (void *) -1;
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/* See if there is a .debug_line section, for split CUs
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the table is at offset zero. */
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if (cu->dbg->sectiondata[IDX_debug_line] != NULL)
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{
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/* We are only interested in the files, the lines will
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always come from the skeleton. */
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res = __libdw_getsrclines (cu->dbg, 0,
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__libdw_getcompdir (cudie),
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cu->address_size, NULL,
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&cu->files);
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}
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else
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{
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Dwarf_CU *skel = __libdw_find_split_unit (cu);
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if (skel != NULL)
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{
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Dwarf_Die skeldie = CUDIE (skel);
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res = INTUSE(dwarf_getsrcfiles) (&skeldie, files, nfiles);
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cu->files = skel->files;
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}
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}
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}
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else
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{
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Dwarf_Lines *lines;
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size_t nlines;
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/* Let the more generic function do the work. It'll create more
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data but that will be needed in an real program anyway. */
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res = INTUSE(dwarf_getsrclines) (cudie, &lines, &nlines);
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}
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}
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else if (cu->files != (void *) -1l)
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/* We already have the information. */
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res = 0;
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if (likely (res == 0))
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{
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assert (cu->files != NULL && cu->files != (void *) -1l);
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*files = cu->files;
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if (nfiles != NULL)
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*nfiles = cu->files->nfiles;
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}
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// XXX Eventually: unlocking here.
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return res;
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}
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INTDEF (dwarf_getsrcfiles)
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