Pseudo-code to illustrate the breakpoint in a program, Programming Languages

Assignment Help:

The standard way for debuggers to plant interactive breakpoints in a program in RAM (whatever the processor instruction set) is to save the break pointed instruction and replace it by a jump to the breakpoint handling code. After the breakpoint is triggered, the saved instruction is restored in its original place in the code. If the interactive dialogue with the debugger during the breakpoint handling indicates that that the triggered breakpoint is to be removed, execution of the program can be resumed simply by jumping to the instruction that had been break pointed. However, if the dialogue with the debugger indicates that the breakpoint is to remain in place when execution of the program is resumed, implementation is more complicated. Execution of the saved instruction could be emulated, but this is difficult to do, ensuring all side effects such as condition code setting and exception triggering are performed correctly, as well as correctly simulating all addressing modes, such as PC relative. It is much easier simply to execute the break pointed instruction in place, but to plant another breakpoint on a subsequent instruction in the same basic block, usually the immediate successor to the original breakpoint, so that the breakpoint handler can regain control in order to replant the original breakpoint and remove the secondary one. This obviously has some challenges if the successor of the break pointed instruction cannot be statically predicted, for instance if the break pointed instruction is a conditional jump, but a common solution is simply to ban planting breakpoints on such instructions. Identify the critical races that exist with this scheme if the program is executed by multiple threads, possibly multiple cores or multiple processors. Use pseudo-code to illustrate how you would resolve these issues.


Related Discussions:- Pseudo-code to illustrate the breakpoint in a program

Use loop invariant to prove the working of the program, 1.  Use mathematica...

1.  Use mathematical induction to prove Whenever n is a positive integer. 2.  Use loop invariant to prove that the program for computing the sum of 1,...,n is correct.

Java swing, Expertsmind brings you unique solution in java assignments ...

Expertsmind brings you unique solution in java assignments Swing Move is the primary Java GUI gadget tool set. It is part of Oracle's Java Groundwork Sessions (JFC) - an A

Visual logic, how much it will cost? i need learn how to make rightsided tr...

how much it will cost? i need learn how to make rightsided triangle in forloop

Program for tube challenge route, 1. Introduction The Tube Challenge is ...

1. Introduction The Tube Challenge is a Guinness World Records challenge that tests both the physical and mental abilities of the person trying to break it. The main components

C-program, about how to create the program in c

about how to create the program in c

Program to finds central individuals in arbitrary networks, Identifying the...

Identifying the Central Individual in a Social Network 1. Introduction You have just been hired by a social networking company! The division you are working in is particul

Class registration, using UML 1- Identify primary classes 2- Scenario d...

using UML 1- Identify primary classes 2- Scenario description 3- Class diagrams 4- Sequence diagrams

Define reasons for using functions, Define Reasons for using Functions? ...

Define Reasons for using Functions? 1. Evade rewriting the same code over and over. 2. It is simpler to write programs and keep track of what they are doing. Codes are able t

To print total no.of ordinary files, Normal 0 false false f...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Jsp, how can we get the data from data base to combo box in jsp page dynami...

how can we get the data from data base to combo box in jsp page dynamically

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