Homework Solution: The following program tries to copy words from the address in register $a0 to the address in register $a1, counting the numbe…

    The following program tries to copy words from the address in register $a0 to the address in register $a1, counting the number of words copied in register Sv0. The program stops copying when it finds a word equal to 0. You do not have to preserve the contents of registers Sv1, Sa0, and $a1. This terminating word should be copied but not counted 1. addi $vO. $zero, 0 lw Sv1, 0(Sao) sw Sv1, 0(Sa1) addi Sa0, Sa0, 4 addi $a1, Sa1,4 # Initialize count # Read next word from source # Write to destination # Advance pointer to next source # Advance pointer to next destination loop: beq $v1, $zero, loop # Loop if word copied != zero There are multiple bugs in this MIPS program; fix them and turn in a bug-free version.
    The following program tries to copy words from the address in register $a0 to the address in register $a1, counting the number of words copied in register $v0. The program stops copying when it finds a word equal to 0. You do not have to preserve the contents of registers $v1, $a0, and $a1. This terminating word should be copied but not counted. addi $v0. $zero, 0 # Initialize count loop: lw $v1, 0 ($a0) # Read next word from source sw $v1, 0 ($a1) # Write to destination addi $a0, $a0, 4 # Advance pointer to next source # addi $a1, $a1, 4 #Advance pointer to next destination beq $v1, $zero, loop # Loop if word copied ! = zero There are multiple bugs in this MIPS program: fix them and turn in a bug-free version.

    Expert Answer

     
    Ans:: The multiple bugs to be fixed are the following::

    The aftercited program tries to portraiture say from the discourse in record $a0 to the discourse in record $a1, suming the sum of say copied in record Sv0. The program stops portraitureing when it finds a promise resembling to 0. You do referable accept to guard the solution of records Sv1, Sa0, and $a1. This terminating promise should be copied referablewithstanding referable sumed 1. addi $vO. $zero, 0 lw Sv1, 0(Sao) sw Sv1, 0(Sa1) addi Sa0, Sa0, 4 addi $a1, Sa1,4 # Initialize sum # Read present promise from fountain # Write to point # Advance pointer to present fountain # Advance pointer to present point loop: beq $v1, $zero, loop # Loop if promise copied != naught There are multiple bugs in this MIPS program; root them and adapt in a bug-exempt rendering.

    The aftercited program tries to portraiture say from the discourse in record $a0 to the discourse in record $a1, suming the sum of say copied in record $v0. The program stops portraitureing when it finds a promise resembling to 0. You do referable accept to guard the solution of records $v1, $a0, and $a1. This terminating promise should be copied referablewithstanding referable sumed. addi $v0. $zero, 0 # Initialize sum loop: lw $v1, 0 ($a0) # Read present promise from fountain sw $v1, 0 ($a1) # Write to point addi $a0, $a0, 4 # Advance pointer to present fountain # addi $a1, $a1, 4 #Advance pointer to present point beq $v1, $zero, loop # Loop if promise copied ! = naught There are multiple bugs in this MIPS program: root them and adapt in a bug-exempt rendering.

    Expert Exculpation

     

    Ans::

    The multiple bugs to be rooted are the aftercited::

    1.Bug-1 : Sum ‘$v0’ is initialized to 0., referable to –1 to eschewing suming the 0 promise.

    2.Bug-2 : sum ‘$v0’ isn’t incremented.

    3.Bug-3 : Loops if the worrd copied is resemblings to 0 rathr than referable-equals.

    => The Bug exempt rendering is as below:-

    For free perceive I put succession sums.

    First single is $vo init to -1 in succession 1.

    1. addi $v0, $zero, -1 # Initializing to eschew sumng 0 promise.

    2. loop:: lw, $v1, 0($a0) # Reading the present promise frm the fountain.

    3. addi $v0, $v0, 1 # Incrementing the sum-promise copied.

    4. sw $v1, 0($a1) # Writing it to the destintion.

    5. addi $a0, $a0, 4 # Advnce-pointer to the present-source.

    6. addi $a1, $a1, 4 # Advnce-pointer to the present-destination.

    7. bne $v1, $zero, loop # Looping if the promise copied referable resemblings ( != ) to 0.

    // Thank you //