binary division program for signed integer, Computer Engineering

Assignment Help:

The program division.c is available for download as part of this assignment. It is a binary division program which works for signed integers. It contains a function, div32, which does the signed division; and a main() program which tests division for several pairs of numbers. You should download, compile, and run it to see the output. Now, re-implement the binary division function, div32, in MIPS assembly code, assuming the following convention for passing arguments:

Register Argument Mechanism

$4 dividend pass by value

$5 divisor pass by value

$6 quotient pass by value

$7 remainder pass by value

Although this is not quite the convention used by a "C" compiler (quotient and remainder are pointers and would otherwise by passed by reference), we will use it here since argument passing mechanisms have not been dealt with in detail at this point in the course. In coding your function it is absolutely essential that the context of the calling program is fully preserved.

Then, re-implement the main() program in MIPS assembly code to test the binary division function. The SPIM environment includes a number of SYSCALL functions for printing strings and integers. Test your functions with the same arrays of test cases given. Your results should be identical. Your assembly program must be fully documented, as follows:

First, at the start of each procedure (main and div32) you should have a list of all the registers that you use, and what each is used for. For example, you should have something like the following at the start of your div32 code (you will have many more registers, probably allocated differently; this is just to give the idea):

#--------------------------------------------------------------------------

# Procedure Name: int div32(long dividend, long divisor,

# long quotient, long remainder)

#

# Description:

#

# Register Allocation: $4: dividend (changed)

# $5: divisor (changed)

# ...

# $10: scratch

# ...

# $17: dividend_sign

# $18: divisor_sign

#--------------------------------------------------------------------------

Second, you should have a comment containing the "C" code that you are translating just before the assembly code implementing that "C" code. You should also have a comment at the end of every line of the assembly code. Here's an example:

#--------------------------------------------------------------------------

# if (dividend < 0) {

# dividend_sign = 1;

# dividend = -dividend;

# }

#--------------------------------------------------------------------------

slt $10, $4, $0 # Check if dividend less than 0

beq $10, $0, div20 # If not, skip to next case

li $17, 1 # dividend_sign = 1

negu $4, $4 # negate dividend

#--------------------------------------------------------------------------

# if (divisor < 0) {

# divisor_sign = 1;

# divisor = -divisor;

# }

#--------------------------------------------------------------------------

div20: slt $10, $5, $0 # Check if divisor less than 0

beq $10, $0, div30 # If not, skip ahead

li $18, 1 # divisor_sign = 1

negu $5, $5 # negate dividend


Related Discussions:- binary division program for signed integer

Benefits of having densely packed integrated circuits, What are benefits of...

What are benefits of having densely packed Integrated Circuits? These are stated below: Reliability: The integrated circuit interconnections are in fact more reliable

What is the standard template library (stl), A library of container templat...

A library of container templates approved by the ANSI committee for inclusion in the standard C++ specification. A programmer who then launches into a discussion of the generic

What is the use of status command, What is the use of status command, data ...

What is the use of status command, data output command, and data input command. A status command is used to test a variety of status conditions in the interface and the periphe

What is ale and explain the functions of ale in 8085, ALE-> Address latch e...

ALE-> Address latch enable...In the case of microcontroller (8051)& microprocessor 8085 the data line and low order 8 bit address lines are multiplexed. In order to getting address

Illustrate about the single inheritance, Illustrate about the single inheri...

Illustrate about the single inheritance During inheritance, superclass feature may by override by a subclass defining that feature with the same name. The overriding features (

Global fon, GlobalFon is an international communication company, which offe...

GlobalFon is an international communication company, which offers international prepaid calling cards. They introduced three different types of cards, (1) AsiaFon: is cheapest for

Explain the following gray code, Q. Explain the following: a) Gray code ...

Q. Explain the following: a) Gray code b) Parity code c) Overflow Q. Give the counting up to 30 in Base 5. Q. Convert (175.6)8 into Gray code and Excess-3 code.

Describe the fundamental characteristics of antennas, Question 1: (a) ...

Question 1: (a) Describe the two fundamental characteristics of antennas explaining in detail how it affects the security of wireless networks. (b) What is a wireless cli

Reduced instruction set computer - risc, Reduced Instruction Set Computer (...

Reduced Instruction Set Computer (RISC): As we discussed before most of the modern CPUs are of the GPR (General Purpose Register) type. A few instances of such type of CPUs ar

Explain in detail about register transfer language, We have multiple instan...

We have multiple instances in RTL (Register Transfer Language), do you do anything special during synthesis stage? Whereas writing RTL(Register Transfer language),say in Verilo

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd