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_getabbrevattr.c b/libdw/dwarf_getabbrevattr.c
new file mode 100644
index 0000000..57fe363
--- /dev/null
+++ b/libdw/dwarf_getabbrevattr.c
@@ -0,0 +1,76 @@
+/* Get specific attribute of abbreviation.
+ Copyright (C) 2003, 2004, 2005, 2014, 2017 Red Hat, Inc.
+ This file is part of elfutils.
+ Written by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+ 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_getabbrevattr (Dwarf_Abbrev *abbrev, size_t idx, unsigned int *namep,
+ unsigned int *formp, Dwarf_Off *offsetp)
+{
+ if (abbrev == NULL)
+ return -1;
+
+ size_t cnt = 0;
+ const unsigned char *attrp = abbrev->attrp;
+ const unsigned char *start_attrp;
+ unsigned int name;
+ unsigned int form;
+
+ do
+ {
+ start_attrp = attrp;
+
+ /* Attribute code and form are encoded as ULEB128 values.
+ Already checked when Dwarf_Abbrev was created, read unchecked. */
+ get_uleb128_unchecked (name, attrp);
+ get_uleb128_unchecked (form, attrp);
+
+ /* If both values are zero the index is out of range. */
+ if (name == 0 && form == 0)
+ return -1;
+ }
+ while (cnt++ < idx);
+
+ /* Store the result if requested. */
+ if (namep != NULL)
+ *namep = name;
+ if (formp != NULL)
+ *formp = form;
+ if (offsetp != NULL)
+ *offsetp = (start_attrp - abbrev->attrp) + abbrev->offset;
+
+ return 0;
+}