这篇文章讲解的三种方法非常详细, 还可以跟随着作者的代码一起试验. 推荐.
Challenges of Debugging Optimized x64 Code
http://blogs.msdn.com/b/ntdebugging/archive/2009/01/09/challenges-of-debugging-optimized-x64-code.aspx
另外两篇文章也值得一看.
Introduction to x64 debugging, part 1
http://www.nynaeve.net/?p=8
Introduction to x64 debugging, part 2
http://www.nynaeve.net/?p=10