The task will be to write a program in assembler to enter a number and calculate...
The task will be to write a program in assembler to enter a number and calculate its associated Fibonacci number using a procedure (subroutine) that is called recursively.
Factorial and Fibonacci(outline Programs)
# MIPS assembly assembly assemblyassemblycode
.data
n: .word 4
.text
main: la $s0,n
lw $a0, 0($s0)
jal factorial
# move what ever is returned into $a0
move $a0, $v0
li $v0,1
syscall
b finished
factorial: add $sp , $sp , -8 # make room
sw $a0, 4($sp ) # store $
sw $ra 0($sp ) # store $ra
add $t0, $0, 2
slt $t0, $a0, $t0 # a <= 1 ?
beq $t0, 0, else # no : go to else
addi $v0, $0, 1 # yes : return 1
addi $sp , $sp , 8 # restore $sp
jr $ra # return
else: add $a0, $a0, -1 # n = -1
jal factorial # recursive call
lw $ra , 0($sp ) # restore restore restore $ra
lw $a0, 4($sp ) # restore restore restore $a0
addi $sp , $sp , 8 # restore restore restore $sp
mul $v0, $a0, $v0 # n * factorialfactorial
#add $v0, $a0, $v0 # n * factorialfactorial
jr $ra # return
finished:
# Fibanocci numbers
# Note any value above 46 will generate an overflow.
please help me finish it, there are three places need to add some code
Homework Answers
# MIPS assembly assembly assemblyassemblycode
.data
n: .word 4
.text
main: la $s0,n
lw $a0, 0($s0)
jal factorial
# move what ever is returned into $a0
move $a0, $v0
li $v0,1
syscall
b finished
factorial: add $sp , $sp , -8 # make room
sw $a0, 4($sp ) # store $
sw $ra 0($sp ) # store $ra
add $t0, $0, 2
slt $t0, $a0, $t0 # a <= 1 ?
beq $t0, 0, else # no : go to else
addi $v0, $0, 1 # yes : return 1
addi $sp , $sp , 8 # restore $sp
jr $ra # return
else: add $a0, $a0, -1 # n = -1
jal factorial # recursive call
lw $ra , 0($sp ) # restore restore restore $ra
lw $a0, 4($sp ) # restore restore restore $a0
addi $sp , $sp , 8 # restore restore restore $sp
mul $v0, $a0, $v0 # n * factorialfactorial
#add $v0, $a0, $v0 # n * factorialfactorial
jr $ra # return
finished:
# Fibanocci numbers
# Note any value above 46 will generate an overflow.
Add Answer to:
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