prntFunctions.c

#include <stdio.h>
#include <stdlib.h>
#include "CVM.h"

/*
 * This function reads every number in the array by incrementing an index called 'i', and doing so until
 * i reaches the end of the array. For every position it prints the index in the array where the instruction is found,
 * the associated instruction (the associations between numbers and instructions are defined in the header file) and
 * the relative parameters, if present. Then the index is incremented by adding to it the number of parameters expected
 * by the instruction it just read plus one (the array cell of the instruction itself).
 */

void prntFunction(int instruction_array[], int length){
    int i = 0;

    while(i < length){
        switch(instruction_array[i]){
            case HALT:
                printf("[%3d] HALT\n", i);
                i += 1;
                break;
            case DISPLAY:
                printf("[%3d] DISPLAY R%d\n", i, instruction_array[i+1]);
                i += 2;
                break;
            case PRINT_STACK:
                printf("[%3d] PRINT_STACK %d\n", i, instruction_array[i+1]);
                i += 2;
                break;
            case PUSH:
                printf("[%3d] PUSH R%d\n", i, instruction_array[i+1]);
                i += 2;
                break;
            case POP:
                printf("[%3d] POP R%d\n", i, instruction_array[i+1]);
                i += 2;
                break;
            case MOV:
                printf("[%3d] MOV R%d %d\n", i, instruction_array[i+1], instruction_array[i+2]);
                i += 3;
                break;
            case CALL:
                printf("[%3d] CALL %d\n", i, instruction_array[i+1]);
                i += 2;
                break;
            case RET:
                printf("[%3d] RET\n", i);
                i += 1;
                break;
            case JMP:
                printf("[%3d] JMP %d\n", i, instruction_array[i+1]);
                i += 2;
                break;
            case JZ:
                printf("[%3d] JZ %d\n", i, instruction_array[i+1]);
                i += 2;
                break;
            case JPOS:
                printf("[%3d] JPOS %d\n", i, instruction_array[i+1]);
                i += 2;
                break;
            case JNEG:
                printf("[%3d] JNEG %d\n", i, instruction_array[i+1]);
                i += 2;
                break;
            case ADD:
                printf("[%3d] ADD R%d R%d\n", i, instruction_array[i+1], instruction_array[i+2]);
                i += 3;
                break;
            case SUB:
                printf("[%3d] SUB R%d R%d\n", i, instruction_array[i+1], instruction_array[i+2]);
                i += 3;
                break;
            case MUL:
                printf("[%3d] MUL R%d R%d\n", i, instruction_array[i+1], instruction_array[i+2]);
                i += 3;
                break;
            case DIV:
                printf("[%3d] DIV R%d R%d\n", i, instruction_array[i+1], instruction_array[i+2]);
                i += 3;
                break;
            default:
                printf("Command not found.\n");
                exit(1);
        }
    }
}