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_func_inline.c b/libdw/dwarf_func_inline.c
new file mode 100644
index 0000000..1f04adf
--- /dev/null
+++ b/libdw/dwarf_func_inline.c
@@ -0,0 +1,101 @@
+/* Convenience functions for handling DWARF descriptions of inline functions.
+ Copyright (C) 2005,2006,2015 Red Hat, Inc.
+ This file is part of elfutils.
+
+ 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 "libdwP.h"
+#include <dwarf.h>
+
+struct visitor_info
+{
+ void *die_addr;
+ int (*callback) (Dwarf_Die *, void *);
+ void *arg;
+};
+
+static int
+scope_visitor (unsigned int depth __attribute__ ((unused)),
+ struct Dwarf_Die_Chain *die, void *arg)
+{
+ struct visitor_info *const v = arg;
+
+ if (INTUSE(dwarf_tag) (&die->die) != DW_TAG_inlined_subroutine)
+ return DWARF_CB_OK;
+
+ Dwarf_Attribute attr_mem;
+ Dwarf_Attribute *attr = INTUSE(dwarf_attr) (&die->die, DW_AT_abstract_origin,
+ &attr_mem);
+ if (attr == NULL)
+ return DWARF_CB_OK;
+
+ Dwarf_Die origin_mem;
+ Dwarf_Die *origin = INTUSE(dwarf_formref_die) (attr, &origin_mem);
+ if (origin == NULL)
+ return DWARF_CB_ABORT;
+
+ if (origin->addr != v->die_addr)
+ return DWARF_CB_OK;
+
+ return (*v->callback) (&die->die, v->arg);
+}
+
+int
+dwarf_func_inline (Dwarf_Die *func)
+{
+ Dwarf_Attribute attr_mem;
+ Dwarf_Word val;
+ if (INTUSE(dwarf_formudata) (INTUSE(dwarf_attr) (func, DW_AT_inline,
+ &attr_mem),
+ &val) == 0)
+ switch (val)
+ {
+ case DW_INL_not_inlined:
+ return 0;
+
+ case DW_INL_declared_not_inlined:
+ return -1;
+
+ case DW_INL_inlined:
+ case DW_INL_declared_inlined:
+ return 1;
+ }
+
+ return 0;
+}
+
+int
+dwarf_func_inline_instances (Dwarf_Die *func,
+ int (*callback) (Dwarf_Die *, void *),
+ void *arg)
+{
+ struct visitor_info v = { func->addr, callback, arg };
+ struct Dwarf_Die_Chain cu = { .die = CUDIE (func->cu), .parent = NULL };
+ return __libdw_visit_scopes (0, &cu, NULL, &scope_visitor, NULL, &v);
+}