rasm2(1) on Linux
The text ac5f185b2d7c, as Debian 7 (Wheezy) shipped it.
radare2 patch assembler and disassembler
Flags it lists
-
-B -
-C -
-D -
-F -
-L -
-a -
-b -
-d -
-e -
-f -
-h -
-l -
-o -
-s