CS 161 x86/C/GDB Cheat Sheet Number Representation To begin, recall that 1 byte is equal to 8 bits, and 1 word is equal to 4 bytes (32 bits). In this class, we do everything in a 32-bit address space. Thus, every address can be written using 1 word of memory. One hexadecimal digit has sixteen […]
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Popa and 2021 Memory Safety CS 161 Computer Security Discussion 2 Question 1 Software Vulnerabilities () For the following code, assume an attacker can control the value of basket, n, and owner_name passed into search_basket. The code includes several security vulnerabilities. Circle three such vulnerabilities in the code and briefly explain each of the three
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 [OpenGL Mathematics](http://glm.g-truc.net/) (*GLM*) is a header only C++ mathematics library for graphics software based on the [OpenGL Shading Language (GLSL) specifications](https://www.opengl.org/registry/doc/GLSLangSpec.4.50.diff.pdf). *GLM* provides classes and functions designed and implemented with the same naming conventions and functionality than *GLSL* so that anyone who knows *GLSL*, can use *GLM* as well in C++. This project isn’t
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 [OpenGL Mathematics](http://glm.g-truc.net/) (*GLM*) is a header only C++ mathematics library for graphics software based on the [OpenGL Shading Language (GLSL) specifications](https://www.opengl.org/registry/doc/GLSLangSpec.4.50.diff.pdf). *GLM* provides classes and functions designed and implemented with the same naming conventions and functionality than *GLSL* so that anyone who knows *GLSL*, can use *GLM* as well in C++. This project isn’t
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Operating Systems – CSCI 402 1960s OS Issues Multiprogramming (i.e., running things “in parallel” with one CPU) Time sharing (i.e., support interactive users) Software complexity Security 18 321 0 Copyright ý . Systems – CSCI 402 2010s OS Issues Multiprogramming (i.e., running things “in parallel” with one CPU) not just one computer, but server farms
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System Calls A trap is a type of “software interrupt” interrupt handler will invoke trap handler prog( ) { … write(fd, buffer, size); … }} User Kernel intr_handler(intr_code) { … if (intr_code == SYSCALL) syscall_handler( ); … } syscall_handler(trap_code) { … if (trap_code == write_code) write_handler( ); … } trap(write_code); … User Stack Operating Systems
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Weenix Brown University Department of Computer Science Authored by Operating Systems Teaching Assistant Staff Edited by and J. Rassi May 18, 2018 2 Contents I Introduction 7 1 The Weenix OS 9 1.1 Motivation ………………………… 9 1.2 HowtoReadThisBook ………………….. 10 1.3 History ………………………….. 10 1.4 Acknowledgements …………………….. 10 2 Pro ject Management 13 2.1 Introduction…………………………
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Operating Systems – CSCI 402 3.5 Booting 1 321 0 Copyright ý . Systems – CSCI 402 Boot Came from the idiomatic expression, “to pull yourself up by your bootstraps” without the help of others it¡¯s a difficult situation In OS load its OS into memory which kind of means that you need an OS
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Operating Systems – CSCI 402 OS Components App App Applications OS Processor Management Memory Management I/O Management 24 321 0 Copyright ý . Systems – CSCI 402 A Simple System: To Be Discussed What is the functionality of the components? What are the key data structures? What mechanisms are there to support the applications? How
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A Simple OS Structure Review of “Computer Organization” Address Space Operating Systems – CSCI 402 text (code) data dynamic (heap) stack x86 Processor Bus idx regs EIP ESP EBP … seg regs CS SS … gen regs EAX EBX … other flags … 32 A0-A31 32 D0-D31 RD WR LOCK INT interrupt enabled processor mode
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