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_hasattr.c b/libdw/dwarf_hasattr.c
new file mode 100644
index 0000000..90b333e
--- /dev/null
+++ b/libdw/dwarf_hasattr.c
@@ -0,0 +1,71 @@
+/* Check whether given DIE has specific attribute.
+ Copyright (C) 2003, 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 <dwarf.h>
+#include "libdwP.h"
+
+
+int
+dwarf_hasattr (Dwarf_Die *die, unsigned int search_name)
+{
+ if (die == NULL)
+ return 0;
+
+ /* Find the abbreviation entry. */
+ Dwarf_Abbrev *abbrevp = __libdw_dieabbrev (die, NULL);
+ if (unlikely (abbrevp == DWARF_END_ABBREV))
+ {
+ __libdw_seterrno (DWARF_E_INVALID_DWARF);
+ return 0;
+ }
+
+ /* Search the name attribute. Dwarf_Abbrev was checked when created,
+ so we can read unchecked here. */
+ const unsigned char *attrp = abbrevp->attrp;
+ while (1)
+ {
+ /* Get attribute name and form. */
+ unsigned int attr_name;
+ get_uleb128_unchecked (attr_name, attrp);
+ unsigned int attr_form;
+ get_uleb128_unchecked (attr_form, attrp);
+
+ /* We can stop if we found the attribute with value zero. */
+ if (attr_name == 0 || attr_form == 0)
+ return 0;
+
+ if (attr_name == search_name)
+ return 1;
+ }
+}
+INTDEF (dwarf_hasattr)