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Recursive function programming in MIPS assembly assignment help

July 11, 2024
Dr. Darcy Nolan
Dr. Darcy
🇬🇧 United Kingdom
Data Structures and Algorithms
A distinguished Ph.D. holder from Imperial College London, Dr. Nolan boasts over 8 years of experience in Computer Science. Having completed over 900 Algorithm Assignments, his proficiency shines through. Trust Dr. Nolan, with his wealth of knowledge from the University of Bristol, to navigate you through complex algorithmic challenges.
Key Topics
  • Using Recursive Functions to Implement Fibonacci Sequence Algorithm
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The program deals with generating a sequence of numbers using the Fibonacci sequence algorithm. The program uses a recursive function in MIPS assembly following the MIPS calling convention and activation records in the stack to save the current program state between each call. Take a look at the following sample for an in-depth demonstration of our MIPS assembly assignment help.

Using Recursive Functions to Implement Fibonacci Sequence Algorithm

Recursive function programming in MIPS assembly assignment help

.data RECORDS: .space 1024 S: .text main: la $s7, S # load address of end of records in s7 li $s0, 1 # first number to calculate loop: move $a0, $s0 # pass number to subroutine jalzib # zib(i) # print number move $a0, $v0 # move return value to a0 to print it li $v0, 1 # syscall number to print integer syscall # print space li $a0, 32 # load ascii space value li $v0, 11 # syscall number to print character syscall addi $s0, $s0, 1 # increment number to calculate ble $s0, 20, loop # repeat while number is below or equal to 20 # exit program li $v0,10 # syscall number to exit program syscall #------------------------------------------------------------------------------- # zib recursive subroutine, requires the number in a0, returns the result in v0 #------------------------------------------------------------------------------- zib: # create new record in s7 addi $s7, $s7, -12 # allocate space to save 3 registers sw $ra, 0($s7) # save ra in record sw $s0, 4($s7) # save s0 in record sw $s1, 8($s7) # save s1 in record bne $a0, $zero, else1 # if (n == 0) li $v0, 1 # return 1; j return else1: bne $a0, 1, else2 # else if (n == 1) li $v0, 1 # return 1; j return else2: bne $a0, 2, else3 # else if (n == 2) li $v0, 2 # return 2; j return else3: andi $t0, $a0, 1 # else if (n%2 == 1 && n >= 3) // odd beq $t0, $zero, else4 # return zib((n-1)/2) + zib((n-1)/2-1) + 1; addi $a0, $a0, -1 # n-1 srl $a0, $a0, 1 # (n-1)/2 move $s0, $a0 jalzib # zib((n-1)/2) move $s1, $v0 # save result in s1 addi $a0, $s0, -1 # (n-1)/2 -1 jalzib # zib((n-1)/2-1) add $v0, $v0, $s1 # zib((n-1)/2) + zib((n-1)/2-1) addi $v0, $v0, 1 # zib((n-1)/2) + zib((n-1)/2-1) + 1 j return else4: # else if (n%2 == 0 && n >= 4) // even # return zib(n/2) + zib(n/2+1) + 1; srl $a0, $a0, 1 # n/2 move $s0, $a0 jalzib #zib(n/2) move $s1, $v0 # save result in s1 addi $a0, $s0, 1 # n/2 +1 jalzib # zib(n/2+1) add $v0, $v0, $s1 # zib(n/2) + zib(n/2+1) addi $v0, $v0, 1 # zib(n/2) + zib(n/2+1) + 1 return: # load old values from record and remove it lw$ra, 0($s7) # load ra from record lw $s0, 4($s7) # load s0 from record lw $s1, 8($s7) # load s1 from record addi $s7, $s7, 12 # remove space allocated for the record jr $ra # return to caller

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