Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
968 views
in Technique[技术] by (71.8m points)

assembly - What is the difference between .word and .equ in MIPS?

I think both do about the same: Variable declaration and initialization. Can you please elaborate?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

.word allocates space and initializes the data. .equ defines a constant, but doesn't allocate any space for it.

So, for example, you might say:

one .equ 1  ; defines a constant called "one"
counter: .word one ; allocates space and initializes it with the value 1

The difference being that the .equ directive doesn't allocate any space in the compiled image.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...