Assignment 3 matmul.s

[Jenna Liebe]

SFU ID: 301358537

Github username: jel-cmpt295

Github: Link to github repo (your assignment repos are private so these links are only accessible to TAs and Instructor): https://github.com/CMPT-295-SFU/assignment-3-jel-cmpt295

Line and file: matmul.s, line 93

Expected behavior: Outputs 3x3 matrix with values from ref/test_matmul.out (calculated by dot.s)

Observed behavior: Outputs 3x3 matrix with all zeros

Question: 

My test_matmul outputs a 3x3 matrix filled with zeros and I can't figure out why the values from dot.s aren't there instead. I thought I calculated the addresses correctly and I'm pretty sure all the arguments I need for dot.s to work are included in my matmul.s file. I'm not sure if this is a problem with dot.s, matmul.s, or test_matmul.s - my test_dot.s works though.

Any help/ideas would be great!

[ali sedaghati]

Please make sure that you're following the calling conventions. For example, you should change how you're using "a" registers for storing the temp variables. Apart from that, you're never increasing the pointer which points to "d". So, you're writing on one location over and over. 

[Jenna Liebe]

Okay, thank you! So is it just a problem with my matmul.s file?

[ali sedaghati]

Yes, changing it should solve the problem.

[Jenna Liebe]

Thanks for the help! I finally got it figured out!