def instruction_name(opcode):
    """ Given an opcode, return the instruction name.
    """
    primary = opcode & _PRIMARY_MASK
    if primary == 0:
        return _OPCODE_NAME_MAP[opcode]
    else:
        return _OPCODE_NAME_MAP[primary]
 Given an opcode, return the instruction name.
    
product/runtime/src/main/python/java/_vendor/elftools/dwarf/callframe.py