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7. What is the value at the "output" address at the end of the program?

7. What is the value at the "output" address at the end of the program?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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pleaseeeeee solve part 7

Part 2.2: Example #1 1. How many extended (pseudo) instructions are there in this example? 2. What does the last instruction do? 3. Why does "lw a0,input" use the auipc command when assembled? 4. What are ".globl,.data,.text, and .word" and what do they mean? 5. What instruction does "j do_fact" translate to? why does it use x0? 6. What is the cycle count when the simulator gets to the first "j exit_loop"? (step through the program) 7. What is the value at the "output" address at the end of the program?
Transcribed Image Text:Part 2.2: Example #1 1. How many extended (pseudo) instructions are there in this example? 2. What does the last instruction do? 3. Why does "lw a0,input" use the auipc command when assembled? 4. What are ".globl,.data,.text, and .word" and what do they mean? 5. What instruction does "j do_fact" translate to? why does it use x0? 6. What is the cycle count when the simulator gets to the first "j exit_loop"? (step through the program) 7. What is the value at the "output" address at the end of the program?
### #### # example_1.s # Name: Andrew E Wilson # Date: 1/22/2020 # Simple Factorial Program # ######### ########### .globl main data input: .word 4 output: .word 0 .text main: lw a0, input li to,1 ble a0, to, done_fact addi to, a0,-1 li a0,1 li t2,1 blez to,done_fact addi t2, t2,1 mul a0,a0, t2 addi to, to, -1 j do_fact la to, output sw a0,0(to) j exit_loop # do_fact: done_fact: exit_loop: # The location for the input data # allocates 4 byte set to 4 # The location for the output data # allocates 4 byte set to 0 # Label for start of program # Loads the input value from memory # Loads the value 1 into a to # If Input is 1 or less, then skip to end # Put input-1 into to # Load 1 # Load 1 # If to is less than or equal to zero then jump to end # Increment t2 by 1 # Mul t2 by a0 to get next factorial # decrement to #jump to top of loop to do next factorial until to is 0 # Load output address to to # Save output value to output memory location # Loop Exit
Transcribed Image Text:### #### # example_1.s # Name: Andrew E Wilson # Date: 1/22/2020 # Simple Factorial Program # ######### ########### .globl main data input: .word 4 output: .word 0 .text main: lw a0, input li to,1 ble a0, to, done_fact addi to, a0,-1 li a0,1 li t2,1 blez to,done_fact addi t2, t2,1 mul a0,a0, t2 addi to, to, -1 j do_fact la to, output sw a0,0(to) j exit_loop # do_fact: done_fact: exit_loop: # The location for the input data # allocates 4 byte set to 4 # The location for the output data # allocates 4 byte set to 0 # Label for start of program # Loads the input value from memory # Loads the value 1 into a to # If Input is 1 or less, then skip to end # Put input-1 into to # Load 1 # Load 1 # If to is less than or equal to zero then jump to end # Increment t2 by 1 # Mul t2 by a0 to get next factorial # decrement to #jump to top of loop to do next factorial until to is 0 # Load output address to to # Save output value to output memory location # Loop Exit
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