WRITE-A-PROGRAM-TO-GENERATE-ASSEMBLY-CODE-FROM-PREFIX-CODE

The primary objective of this project is to develop a program that takes expressions in prefix notation as input and produces corresponding assembly language code as output. #python def generate_assembly(prefix_expression): stack = []

# Define a dictionary for mapping operators to assembly instructions
operators = {
    '+': 'add',
    '-': 'sub',
    '*': 'imul',
    '/': 'idiv',
}

assembly_code = []

# Iterate through the tokens in reverse order (right to left)
for token in reversed(prefix_expression):
    if token.isdigit():
        stack.append(token)  # Push operands onto the stack
    elif token in operators:
        # Pop two operands from the stack
        operand1 = stack.pop()
        operand2 = stack.pop()

        # Generate the corresponding assembly instruction
        instruction = operators[token]

        # Emit the assembly instruction
        assembly_code.append(f'{instruction} {operand1}, {operand2}')

        # Push the result back onto the stack
        stack.append(operand1)
    else:
        raise ValueError(f"Invalid token: {token}")

# The final result should be on top of the stack
if len(stack) != 1:
    raise ValueError("Invalid prefix expression")

# Add code to print the result (assuming x86 assembly)
result = stack[0]
assembly_code.append(f'mov eax, {result}')
assembly_code.append('call print_result')

return '\n'.join(assembly_code)

Get the prefix expression from the user

prefix_expression = input("Enter a prefix expression: ").split()

Example usage:

assembly_code = generate_assembly(prefix_expression) print(assembly_code)