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RISC-V Assembly Exercises

Some exercises of ASM for RISC-V processors made during my first year of university

This work is licensed under CC BY-NC-SA 4.0

1) Repository structure and content of the files

As you may expect, each folder contains the exercises done in each lecture (we did exercises only on certain lessons), plus a couple exercises done for fun / personal projects. I'll mark here below all the files with what it should be the main point of the program (at a certain point I stopped writing them, I wasn't originally planning to publish them).

RISC-V Exercises
 ├ Exercise 01
 │  └ riscv1-ex1.asm | Sum two numbers and save the result in the memory
 ├ Exercise 02
 │  ├ riscv1-ex1.asm | Print different strings based on the initial number
 │  ├ riscv1-ex2.asm | Print the length of the string
 │  └ riscv1-ex3.asm | Print the smaller integer between the given two
 ├ Exercise 03
 │  ├ riscv1-ex1.asm | Print the sum of all the array's values
 │  └ riscv1-ex2.asm | Print the array's value in the Nth position, where N is the first given integer
 ├ Exercise 04
 │  ├ riscv1-persproj.asm | Given a string of a roman number, it decodes it into a decimal number
 │  └ riscv1-ex2.asm | Print the factorial of a number iteratively
 ├ Exercise 05
 │  ├ riscv1-ex1.asm | Print all the numbers fron N to 1
 │  └ riscv1-ex2.asm | Print the biggest number in an array
 ├ Exercise 06
 │  ├ riscv1-ex1.asm | Example of a function
 │  ├ riscv1-ex2.asm | Print two strings with a new line between the two words
 │  └ riscv1-ex3.asm | Example of a recursive function that computes the factorial of a number
 ├ Exercise 07
 │  ├ riscv1-ex1.asm | Print the length of a linked list
 │  └ riscv1-ex2.asm | Print the length of a linked list recursively
 ├ Exercise 08
 │  ├ riscv1-ex1.asm | Print the bigger integer between the two given ones
 │  ├ riscv1-ex2.asm | Previous exercise but with labels (with pseudo-instructions)
 │  ├ riscv1-ex3.asm | Print all the numbers between y and x
 │  ├ riscv1-ex4.asm | Print if the first number is in the array
 │  ├ riscv1-ex5.asm | Print the numbers in the even positions of the array
 │  ├ riscv1-ex6.asm | Print the sum of all the values of the linked list
 │  ├ riscv1-ex7.asm | Print the sum (obtained recursively) of all the items of the linked list
 │  ├ riscv1-ex8.asm | Reverse a list recursively
 │  └ riscv1-ex9.asm | Solution for the previous exercise
 ├ Exercise 09
 │  ├ riscv1-ex1.asm | Print how many times both numbers x and y appear in the array
 │  ├ riscv1-ex2.asm | Count the rows in a matrix
 │  ├ riscv1-ex3.asm | Print the elements in the diagonal of a NxN matrix
 │  ├ riscv1-ex4.asm | Traverse a binary tree and print the number of nodes
 │  └ riscv1-ex5.asm | Given a linked list and an integer x, print how many times the integer appears in the list [INCOMPLETE]
 ├ Exercise 10
 │  ├ riscv1-ex1-solution.asm | Print the number of nodes in a n-ary tree [SOLUTION]
 │  ├ riscv1-ex2.asm | Print the sum of the positive numbers in the array
 │  └ riscv1-ex3.asm | Print the Maximum Common Divisor between two numbers x and y
 ├ Exercise 11
 │  ├ riscv1-ex1.asm | Remove all the negative items from a linked list [INCOMPLETE]
 │  ├ riscv1-ex2.asm | Build a function that takes an array and arrange it in such a way that the first item is the minimum [INCOMPLETE]
 │  ├ riscv1-ex3.asm | Sort the array from the smallest to the greatest item
 │  └ riscv1-ex4.asm | Sort the array such that all the values smaller than y are on the left of y and the bigger ones are on the right [INCOMPLETE]
 ├ Exercise 12
 │  └ riscv1-ex1.asm | Given a value N, search efficiently in the tree if N is present [INCOMPLETE]
 └ Exercise [Extra Batch]
    ├ riscv1-ex1.asm | Reverse an array recursively
    ├ riscv1-ex2.asm | Print the length of a linked list by using recursion
    └ riscv1-ex3.asm | Count the sum of the values of a binary tree

2) RARS theme (OneDark based)

With a bit of patience, I've been able to (kind-of) reproduce the One Dark color theme on RARS. I haven't yet discovered if there is a way to export color schemes, so I'm listing all the colors here (in RGB format, since all the colors have the A value equal to 255. Please note that, in order to change the editor's colors, you have to go to Settings > Editor...). The font that I'm using is the beloved JetBrains Mono font, plain style, with 15pt size.

For the editor:

  • Background: 35, 39, 46;
  • Foreground: 228, 192, 123 (this edits both the line numbers and all the text sections that are not instructions / register / comments...);
  • Line Highlight: 44, 49, 60;
  • Text Selection: 61, 69, 85;
  • Caret: 82, 138, 251;

For the keywords:

  • Label: 228, 192, 123;
  • Instruction: 97, 174, 238;
  • Assembler Directive: 198, 120, 221;
  • Register: 213, 104, 113;

If I'll find out how to edit the color of the UI too, then I will update this README file with the necessary instructions to change it.

3) Further informations & credits

These exercises come from the lectures of professor Mei @ Sapienza. Further informations regarding the course can be found here.

All the exercises were made with the RARS software