Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/libdw/dwarf_getsrcfiles.c b/libdw/dwarf_getsrcfiles.c
new file mode 100644
index 0000000..5af6f68
--- /dev/null
+++ b/libdw/dwarf_getsrcfiles.c
@@ -0,0 +1,79 @@
+/* Return source file information of CU.
+ Copyright (C) 2004, 2005, 2013, 2015 Red Hat, Inc.
+ This file is part of elfutils.
+ Written by Ulrich Drepper <drepper@redhat.com>, 2004.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ elfutils is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <assert.h>
+#include <dwarf.h>
+#include "libdwP.h"
+
+
+int
+dwarf_getsrcfiles (Dwarf_Die *cudie, Dwarf_Files **files, size_t *nfiles)
+{
+ if (cudie == NULL)
+ return -1;
+ if (! is_cudie (cudie))
+ {
+ __libdw_seterrno (DWARF_E_NOT_CUDIE);
+ return -1;
+ }
+
+ int res = -1;
+
+ /* Get the information if it is not already known. */
+ struct Dwarf_CU *const cu = cudie->cu;
+ if (cu->lines == NULL)
+ {
+ Dwarf_Lines *lines;
+ size_t nlines;
+
+ /* Let the more generic function do the work. It'll create more
+ data but that will be needed in an real program anyway. */
+ res = INTUSE(dwarf_getsrclines) (cudie, &lines, &nlines);
+ }
+ else if (cu->files != (void *) -1l)
+ /* We already have the information. */
+ res = 0;
+
+ if (likely (res == 0))
+ {
+ assert (cu->files != NULL && cu->files != (void *) -1l);
+ *files = cu->files;
+ if (nfiles != NULL)
+ *nfiles = cu->files->nfiles;
+ }
+
+ // XXX Eventually: unlocking here.
+
+ return res;
+}
+INTDEF (dwarf_getsrcfiles)