Part 2: C and Assembly
C and Assembly programs are structured the same way: as a collection of
functions, possibly spread across multiple source files.
But C and Assembly are even more closely related: they both have the same
concept of a "function". A function written in either language can be called
transparently from the other.
In this assignment, we'll confirm that you have a development environment that
allows you to write, build, and run programs written in C and Assembly.
It is recommended that you use the Xbuntu VM from HW01a with the vim editor.
Using homework tarballs
The starter code for this assignment is distributed as a .tar.gz archive (a
"gzipped tarball").
- You can unpack this tarball with: ```tar xzvf [file].tar.gz```
- The starter code is unpacked into a directory. You want to keep this
directory and nested directory structure so as to not confuse the
autograding scripts.
- Once you've completed your work in the assignment directory, you can
pack it up into a new tarball for submission
with: ```tar czvf [new-file].tar.gz [the-directory]```
Task 1:
- Create a C source file, "square.c", containing a function called
"square" that squares a long integer.
- Run "make square" and "./square 5" to verify that the provided
assembly code in "square-main.s" can call your function.
Task 2:
- Create an assembly source file, "cube.s", containing a function called
"cube" that cubes a long integer (e.g. cube(3) = 27).
- Run "make cube" and "./cube 5" to verify that the provided
C code in "cube-main.c" can call your function.
- Run "perl test.t" to make sure that the autograder will be happy with
your code. Fix any issues.
To Submit:
- A tarball containing the starter code and your modifications.
- Make sure you don't change the test script.
