To implement a program that computes the GCD of two numbers.
The program to compute the GCD and its equivalent low-level instructions executed by the hardware. The low-level instructions used are:
| assign | It assigns a value to a variable |
| load | It loads a value of a global or local variable to the given register |
| store | It stores the value from the given register to the global or local variable |
| add | It adds the values contained in two registers and puts the result in the first register. |
| out | It prints the output value to the screen. |
| in | It reads the input from to user and stores in a variable |
| copy | It copies the value of a variable between segments of memory. |
| push | It pushes a variable on to the stack |
| pop | It pops out the variable out of the stack |
| rem | It performs division operation of the values contained in two registers and puts the remainder in the first register. |
| fcall | It initiates a call to the given function. |
| fenter | It changes the control of execution to the called function. |
| freturn | It returns the control from the called function to the caller. |
| neq | Check if the values in two registers are different. |
| if_true | Checks if the condition evaluated to true. |
| if_false | Checks if the condition evaluated to false. |
| label | Is used to mark the position in the low-level instructions to enable jumping to the marked position. |
| exit | Signifies the end of program |
