ARCH_OPERAND_TYPE(invalid,       0)
ARCH_OPERAND_TYPE(memory,        0)
ARCH_OPERAND_TYPE(equals,        0)
ARCH_OPERAND_TYPE(callback,      0)
ARCH_OPERAND_TYPE(variadic,      0)
ARCH_OPERAND_TYPE(symconst,      sizeof(entity *))
ARCH_OPERAND_TYPE(register_set,  sizeof(arch_register_set_t *))
ARCH_OPERAND_TYPE(immediate,     sizeof(tarval *))