Svu Ce450 Spring 2013 Hw #1-Id a3082

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SVU CE450 Spring 2013

Homework #1

Due date: 1/19/2013

In this homework, you are to get familiar with the MIPS Processor Simulator - SPIM, by followingthe steps as below:

1. Download and install the SPIM simulator from sourceforge.net, a website that hosts open-sourcesoftware for free, to your personal computer. After installation, take a screen shot of theinstallation completion using screen capture utility snipping tool (for window), and print ahardcopy (proof of your installation)

2. Run the provided assembly program below with the SPIM simulator, and show the final result ofall CPU registers, Memory content, and program counter. Take a screen shot again, and print

the hardcopy. Using a high-light marker, point out the PC, r28, r29, and r31 values.

main.s####################################

.file 1 "main.c"# .section .mdebug.abi32# .previous# .gnu_attribute 4, 1

.text

.align 2# .globl main#.LFB0 = .# .cfi_startproc

.set nomips16.set nomicromips

.ent main# .type main, @functionmain:

.frame $fp,16,$31 # vars= 8, regs= 1/0, args= 0, gp= 0

.mask 0x40000000,-4

.fmask 0x00000000,0

.set noreorder

.set nomacroaddiu $sp,$sp,-16

# .cfi_def_cfa_offset 16sw $fp,12($sp)move $fp,$sp

# .cfi_offset 30, -4# .cfi_def_cfa_register 30

sw $0,4($fp)sw $0,0($fp)j .L2nop

.L3:lw $3,4($fp)


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lw $2,0($fp)nopaddu $2,$3,$2sw $2,4($fp)lw $2,0($fp)nop

addiu $2,$2,1sw $2,0($fp)

.L2:lw $2,0($fp)nopslt $2,$2,11andi $2,$2,0x00ffbne $2,$0,.L3nop

lw $2,4($fp)move $sp,$fplw $fp,12($sp)addiu $sp,$sp,16j $31nop

.set macro

.set reorder

.end main# .cfi_endproc#.LFE0:# .size main, .-main# .ident "GCC: (Sourcery CodeBench Lite 2011.09-76) 4.5.2"

.asm

CE450 COMPUTER ARCHITECTURE Spring 2013

ASSIGNMENT 1


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ID Number: A3082Name : Moulika Bandi

1) Downloading and installing SPIM simulator

2) Run the program with simulator

CPU Registers


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Program counter(PC)

R28,R29,R31 values


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In most processors, PC is incremented after fetching an instruction, and holds the memory address of (points to) the

next instruction that would be executed. (In a processor where the incrementation precedes the fetch, PC points to the

current instruction being executed.)

Memory content:

Memory content of text and instructions

Program counter
http://en.wikipedia.org/wiki/Instruction_(computer_science)http://en.wikipedia.org/wiki/Memory_addresshttp://en.wikipedia.org/wiki/Instruction_(computer_science)http://en.wikipedia.org/wiki/Memory_address


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Kernel text segment


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Summary : 1)downloaded SPIM, captured screen shots2)Run the program with SPIM-CPU registers, program counter and memory content

screen shots with R28, R29, R31 values are captured

Note : I am submitting the assignment1 on Jan 23rd as the very first class I have attended is on jan 18th and the

professor has given one week time. so due date for submitting the assignment is Jan 25th.

Svu Ce450 Spring 2013 Hw #1-Id a3082

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