Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Not so much about linux assembly
Review: It is a book which should focus on linux assembly. However, I didn't see much of what I want to find about AT&T format. Maybe if you want to write some codes about linux device driver, it is a reference book. But if you try to find some information about AT&T format, try other way.
