commit 147f7ebe8dc3e54a4c65922ea3eb4acbdc0e2491
Author: Brandon Bergren <bdragon@FreeBSD.org>
Date:   Wed Jun 24 18:54:48 2020 -0500

    rtld-elf dtrace bits (where did I get this from anyway?)

diff --git a/libexec/rtld-elf/rtld.d b/libexec/rtld-elf/rtld.d
new file mode 100644
index 000000000000..98f0b7d0124d
--- /dev/null
+++ b/libexec/rtld-elf/rtld.d
@@ -0,0 +1,13 @@
+
+/*
+ * SDT probes used by GDB.
+ */
+provider rtld {
+	probe init_start(int, void*);
+	probe init_complete(int, void*);
+	probe map_start(int, void*);
+	probe map_failed(int, void*);
+	probe reloc_complete(int, void*, void*);
+	probe unmap_start(int, void*);
+	probe unmap_complete(int, void*);
+};