diff --git a/libthread_db/include/sys/procfs.h b/libthread_db/include/sys/procfs.h
new file mode 100644
index 0000000..0ae7a0b
--- /dev/null
+++ b/libthread_db/include/sys/procfs.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2006 The Android Open Source Project
+ */
+
+#ifndef _SYS_PROCFS_H
+#define _SYS_PROCFS_H
+
+#include <sys/types.h>
+
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+typedef pid_t lwpid_t;
+typedef void *psaddr_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif