Write the assembler program using LMC assembler to do the sa

Write the assembler program using LMC assembler to do the same as the C code below

int main(){

   int x = 6; int y = 44;

   while (x >= 0) {

      y++;

      x--;

   }

   if (x < 0)

      y = -1;

   else

      y = 1;

   if (x == 0)

      y = -1;

   else

      y = 1;

   if (x == 3)

      y = -1;

   else

      y = 1;

}

When this is completed change your LMC assembler to take input instead of x and y having a fixed value.

to check code here: http://peterhigginson.co.uk/LMC/

Here is a link to a PDF that will help

http://www.ictresources.net/uploads/2/9/2/6/29262609/the_little_man_computer.pdf

Solution

main:

stwu 1,-48(1)

stw 31,44(1)

mr 31,1

li 9,6

stw 9,24(31)

li 9,44

stw 9,28(31)

b .L2

.L3:

lwz 9,28(31)

addi 9,9,1

stw 9,28(31)

lwz 9,24(31)

addi 9,9,-1

stw 9,24(31)

.L2:

lwz 9,24(31)

cmpwi 7,9,0

bge 7,.L3

lwz 9,24(31)

cmpwi 7,9,0

bge 7,.L4

li 9,-1

stw 9,28(31)

b .L5

.L4:

li 9,1

stw 9,28(31)

.L5:

lwz 9,24(31)

cmpwi 7,9,0

bne 7,.L6

li 9,-1

stw 9,28(31)

b .L7

.L6:

li 9,1

stw 9,28(31)

.L7:

lwz 9,24(31)

cmpwi 7,9,3

bne 7,.L8

li 9,-1

stw 9,28(31)

b .L9

.L8:

li 9,1

stw 9,28(31)

.L9:

li 9,0

mr 3,9

addi 11,31,48

lwz 31,-4(11)

mr 1,11

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