Question

Provide a flowchart of the code below.

.globl main
.text main:
# Use stack to implement a function
# $100 = result 1i $a0, 0x0p640000
# This initializes the register $a0 to 0x00010000
addi $sp, $sp, -4 # Make space on the stack to store one register
sw $a0, 0($sp) # Save $a0 on the stack

jal for_tcall_function # Jump and link to the function for_tcall_function

addi $a0, $a0, -1 # Deallocate the stack space

done:
lw $a0, 0($sp) # Restore the $a0 from the stack
addi $sp, $sp, 4 # Deallocate the stack space
jr $ra # Return to the caller

# Following codes are mandatory (return)
li $v0, 1 # System call for print integer
syscall

Answer 1

This question is about creating a flowchart for a program that uses stack to implement a function in MIPS assembly language.

Step-by-step explanation:

Name: Main

Input: None

Output: None

1. Initialize $a0 to 0x00010000
2. Make space on the stack by adding -4 to $sp
3. Save $a0 on the stack
4. Jump and link to the function for_tcall_function
5. Subtract 1 from $a0 to deallocate stack space
6. Restore $a0 from the stack
7. Add 4 to $sp to deallocate stack space
8. Return to the caller
9. System call to print integer