'Syscall' presentation slideshows

The Kernel and the Unix Process API

The Kernel and the Unix Process API. Jeff Chase Duke University. The story so far: process and kernel. A (classical) OS lets us run programs as processes . A process is a running program instance (with a thread ). Program code runs with the core in untrusted user mode.

798 views • 65 slides

Intro to Computer Org.

511 views • 40 slides

CS 5600 Computer Systems

CS 5600 Computer Systems. Project 2: User Programs in Pintos. User Programs in Pintos. Pintos already implements a basic program loader Can parse ELF executables and start them as a process with one thread Loaded programs can be executed But this system has problems:

493 views • 18 slides

The SPIM Simulator

The SPIM Simulator. SPIM is a simulator that let you run and debug MIPS assembler programs. The simulator allows you to look at the content of registers and memory, and to single step through the simulation. Install PCSpim http://www.cs.wisc.edu/~larus/spim.html Documentation

180 views • 16 slides

Chapter 2 - The CRA-1

Chapter 2 - The CRA-1. Useful while learning OS basics to use a reference computer system Book creates a Composite RISC Architecture (CRA-1) computer system (implicit homage to Cray-1? :) Simple organization: Figure 2.1 CRA-1 CPU 32 general-purpose 32-bit registers, r0 through r31

302 views • 9 slides

TAL 2

TAL 2. Input/Output in TAL. In TAL, the input and output are responsibilities of the operating system. TAL uses the instruction syscall to request the operating system to perform a specified task.

225 views • 4 slides