, you will again implement matrix multiplication, this time using MIPS.
The first matrix is an n×k matrix, while the second matrix is a k×m matrix. Therefore, the result will be an n×m matrix. Use the read_int system call (syscall) to read in n, k, and m, as well as each unsigned integer matrix value.
One approach you could take is to store these important values in your .data section as follows (with sample hard-coded values shown):
.data
n: .word 4 k: .word 3 m: .word 4
Once you have your matrix sizes defined, dynamically allocate memory to store the actual matrices. This would be equivalent to calling malloc() or calloc() in C to allocate memory on the heap. And remember that each integer is one word (or four bytes) in size.
Example Program Execution
On the next page is an example MIPS program execution that you can use to better understand how your program should work, how you can test your code, and what output formatting to use for Submitty. Also use test cases from Homework 1 to test your MIPS code.
Note that you must input each value on a separate line in MIPS. And you can assume that the input given to your program is valid.
When displaying a matrix, each line must start with ‘[’ and end with ‘]’ (as with Homework 1), but in this assignment, left justify the columns by using TAB (‘\t’) characters as follows:
[12\t34\t5567\t]
[8\t9\t123\t]
[45\t67\t8\t]
[9\t10\t11\t]
This will display this 4 × 3 matrix as follows:
[12
34
5567
]
[8
9
123
]
[45
67
8
]
[9
10
11
]
(spim) load "hw3.s"
(spim) run
Please enter values for n, k, and m:
4
3
4
Please enter values for the first matrix (4x3):
10
20
30
40
50
60
70
80
90
100
110
120
Please enter values for the second matrix (3x4):
0
10
0
20
30
0
40
0
0
50
0
60
[10 20 30
]
[40 50 60
]
[70 80 90
]
[100 110 120
multiplied by
]
[0 10 0
20
]
[30 0 40
0
]
[0 50 0
equals
60
]
[600 1600 800
2000
]
[1500 3400 2000
4400
]
[2400 5200 3200
6800
]
[3300 7000 4400
(spim)
9200
]
Error Checking
Given the complexity of this assignment, you can assume that all input values are valid unsigned integers. You can also assume that the correct number of values is given for each matrix. In other words, you do not need to validate the user input.
