Write a MIPS assembly language program that prompts for a user to enter a series

Question

Write a MIPS assembly language program that prompts for a user to enter a series of floating point numbers and calls read_float to read in numbers and store them in an array only if the same number is not stored in the array yet. Then the program should display the array content on the console window.

Consult the green sheet and the chapter 3 for assembly instructions for floating point numbers. Here is one instruction that you might use:

c.eq.s   $f2, $f4
bc1t   Label1

Here if the value in the register $f2 is equals to the value in $f4, it jumps to the Label1. If it should jump when the value in the register $f2 is NOT equals to the value in $f4, then it should be:

c.eq.s   $f2, $f4
bc1f   Label1

To load a single precision floating point number (instead of lw for an integer), you might use:

l.s   $f12, 0($t0)

To store a single precision floating point number (instead of sw for an integer), you might use:

s.s   $f12, 0($t0)

To assign a constant floating point number (instead of li for an integer), you might use:

li.s    $f12, 123.45

To copy a floating point number from one register to another (instead of move for an integer), you might use:

mov.s    $f10, $f12

The following shows the syscall numbers needed for this assignment.

System Call           System Call                           System Call
Number                  Operation                              Description

2                              print_float             $v0 = 2, $f12 = float number to be printed
4                              print_string           $v0 = 4, $a0 = address of beginning of ASCIIZ string
6                              read_float              $v0 = 6; user types a float number at keyboard; value is store in $f0
8                              read_string            $v0 = 8; user types string at keybd; addr of beginning of string is store in $a0; len in $a1

Here are sample outputs (user input is in bold): -- note that you might get some rounding errors

Enter a number:
3
Enter a number:
54.4
Enter a number:
2
Enter a number:
5
Enter a number:
2
Enter a number:
-4
Enter a number:
5
Enter a number:
76
Enter a number:
-23
Enter a number:
43.53
Enter a number:
-43.53
Enter a number:
43.53
Enter a number:
65.43
The array contains the following:
3.00000000
54.40000153
2.00000000
5.00000000
-4.00000000
76.00000000
-23.00000000
43.52999878
-43.52999878
65.43000031

Explanation / Answer

MOV EDX, 10 ; loop count
MOV EAX, 5 ; x_0 in heron algorythm
MOV DWORD[EBP-100], ECX ; save INPUT (ecx is input)
MOV DWORD[EBP-104], EDX ; save loop count
jmp loop
MOV ECX, EAX ; move OUTPUT to ECX

loop:

MOV DWORD[EBP-104], EDX ; save loop count
xor edx, edx

MOV ECX, EAX
MOV EAX, DWORD[EBP-100]
DIV ECX
ADD EAX, ECX
XOR EDX, EDX
mov ecx, 2
DIV ecx

MOV EDX, DWORD[EBP-104] ; load loop count
DEC EDX
JNZ loop

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