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

Implement a lunar lander simulation, 1. Modify your solution to #8 so that ...

1. Modify your solution to #8 so that if an ellipse is touched by the mouse, it turns permanently green.Bonus (up to +5): a green ellipse stops moving, but recovers after 5 seconds

Define functions with no arguments and no return values, Define Functions w...

Define Functions with no arguments and no return values? When a function has no arguments it doesn't receive any data from the calling function. Likewise, it doesn't return any

Genetic diseases, Genetic Diseases Problem Description Many human di...

Genetic Diseases Problem Description Many human diseases could be controlled by the knowledge of the gene's structure and pattern. The human gene could be represented by fou

Need help starting a project out, I''m doing a project for class in college...

I''m doing a project for class in college and im supposed to use today''s date and figure out how old i am in months, days, minutes, and seconds. My question is what is the beset

Program for connect 4 game on a general board, The classical connect-4 game...

The classical connect-4 game is played on a 67 board, it can in fact be played in any nrRowsnrCols board. In your implementation, the user will specify the number of rows nrRows an

Design program that presents animation of the solar system, Figure is a rep...

Figure is a representation of the solar system. In a basic model of the same concentric orbits planets rotate around the sun. The closer the Planet in less time Sun completes a ful

Linux Lab Assignments, I have a linux lab class that consist of 1 lab assig...

I have a linux lab class that consist of 1 lab assignment per week for 5 weeks. It is an online virtual lab and is fairly easy, I just don''t have the time.

Program for nuclear reactor - embedded systems, Implement the "Nuclear Reac...

Implement the "Nuclear Reactor" example using the following:  An ISR triggered by a button press  A task to update the temperatures  A semaphore to communicate between the ISR and

C language code, Go to the following link and please do Problem 6. This is ...

Go to the following link and please do Problem 6. This is in C language. http://wikisend.com/download/304748/hw%206.pdf The code I need must be in C language and not C++ . Thank

Assembly language coding, i need a coding to glow 8 LEDs on a port with pwm...

i need a coding to glow 8 LEDs on a port with pwm effect

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