Cosc 2150 Assignment 7
Due: March 23, 2009
Write the assembly language code in ARC (simplified SPARC code). Test it with the
simulator and hand in a hard copy of the code and compiled code found in the .lst file.
You must use comments or lose half the points.
1.
In the main program, you CAN NOT load the entire array into the registers. You can
only work with two elements of the array at a time. You can shorten the swap
subroutine, by skipping the temporary (called temp) variable (since registers act as
temporary variables anyway), if you want to. You must comment your code. Lastly, the
swap subroutine must store the value of register 15 into a variable and reload it, as shown
in class and store the array elements back into memory in the subroutine.
main () {
int a[10] = {10,8,6,4,2,9,7,5,3,1};
int I,j;
for (I=0; I<10; ++I) {
for (j=0; j<9; ++j) {
if (a[ j ] > a[ j+1 ]) {
swap ();
}
}
}
}
swap () {
int temp;
temp = a[ j ];
a[ j ] = a[ j+1];
a[ j+1] = temp;
}
2. Write the code as is, DO NOT remove the subroutines. Don’t forget to store %r15 and
reload %r15 in each subroutine.
main () {
int a[10], I, j;
for (I=0; I<10; I++) {
if (I==0) {
j =I;
sub3;
} else if (I <=5){
sub1;
} else {
