'Jump table' diaporamas de présentation

Introduction to Computer Systems 15-213/18-243, spring 2009 7 th Lecture, Feb. 3 rd

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ELN5622 Embedded Systems Class 5 Spring, 2003

ELN5622 Embedded Systems Class 5 Spring, 2003. Aaron Itskovich itskovich@rogers.com. Interrupts. Introduction to interrupts What are they How are they used 68HC11 interrupt mechanisms Types of interrupts Interrupt priorities Resets and their operation/use. Introduction to interrupts.

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Carnegie Mellon

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Carnegie Mellon

Carnegie Mellon. Machine-Level Programming III: Switch Statements and IA32 Procedures 15-213 / 18-213: Introduction to Computer Systems 7 th Lecture, Feb. 4, 2014. Instructors: Seth Copen Goldstein, Anthony Rowe, Greg Kesden. Carnegie Mellon. Today. Switch statements IA 32 Procedures

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CS 3214 Computer Systems

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Machine-Level Programming III: Switch Statements and IA32 Procedures

Carnegie Mellon. Machine-Level Programming III: Switch Statements and IA32 Procedures. 15-213/18-213/15-513: Introduction to Computer Systems. 7 th Lecture , 5 June 2013. Instructors: Gregory Kesden. Carnegie Mellon. Today. Switch statements IA 32 Procedures Stack Structure

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Lecture 4: Advanced Instructions, Control, and Branching cont.

Lecture 4: Advanced Instructions, Control, and Branching cont. EEN 312: Processors: Hardware, Software, and Interfacing. Department of Electrical and Computer Engineering Spring 2014, Dr. Rozier (UM). COURSE PLAN FOR TODAY Control Instructions Basic Memory Access. CONTROL INSTRUCTIONS.

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Data Processing Instructions

Data Processing Instructions. Arithmetic Instructions Logic Instructions. Arithmetic Instructions. Add Subtract Increment Decrement Multiply Divide Decimal adjust. Arithmetic Instructions. ADD Instructions. add a, byte ; a ? a + byte addc a, byte ; a ? a + byte + C

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Workshop Series

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Data Processing Instructions

Data Processing Instructions. Arithmetic Instructions Logic Instructions. Arithmetic Instructions. Add Subtract Increment Decrement Multiply Divide Decimal adjust. Arithmetic Instructions. ADD Instructions. add a, byte ; a ? a + byte addc a, byte ; a ? a + byte + C

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Chapter 3 Machine-Level Representation of Programs

Chapter 3 Machine-Level Representation of Programs. Guobao Jiang 11210240049@fudan.edu.cn. Problem 3.1 (P138). Assume the following values are stored at the indicated memory addresses and registers: Fill in the following table showing the values for the indicated operands:.

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Chapter 3 Machine-Level Representation of Programs

Chapter 3 Machine-Level Representation of Programs. Guobao Jiang 11210240049@fudan.edu.cn. Problem 3.1 (P138). Assume the following values are stored at the indicated memory addresses and registers: Fill in the following table showing the values for the indicated operands:.

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Recitation 2: Assembly & gdb

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Computer Systems

Computer Systems. New to C?. Contents. Control Flow If-then-else Varieties of Loops Switch Statements. If-then-else. _max: pushl %ebp movl %esp,%ebp movl 8(%ebp),%edx movl 12(%ebp),%eax cmpl %eax,%edx jle L9 movl %edx,%eax L9: movl %ebp,%esp popl %ebp ret. Set Up.

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ECE 447: Lecture 7

ECE 447: Lecture 7. Polling and Interrupts. Main Program. Polling routine. Service device #1. Signal from device #1?. Service device #2. Signal from device #2?. Signal from device #N?. Service device #N. Cycle continuously. ECE 447: Polling. ECE 447: Interrupt.

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Machine-Level Programming 3 Control Flow

Machine-Level Programming 3 Control Flow. Topics Control Flow Switch Statements Jump Tables. Switch Statements. Implementation Options Jump Table Lookup branch target Constant time Possible when cases are small integer constants Series of conditionals Organize in tree structure

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Machine-Level Programming 3 Control Flow

Machine-Level Programming 3 Control Flow. Topics Control Flow Switch Statements Jump Tables. Switch Statements. Implementation Options Series of conditionals Organize in tree structure Logarithmic performance Jump Table Lookup branch target Constant time

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Machine-Level Programming 3 Control Flow

Machine-Level Programming 3 Control Flow. Topics Control Flow Switch Statements Jump Tables. Switch Statements. Implementation Options Series of conditionals Organize in tree structure Logarithmic performance Jump Table Lookup branch target Constant time

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Switch statements

Switch statements. Multi-way selection (more than two alternatives) Can handle as a series of two-way selections Slow when later cases execute Can do multi-way branching directly Jump table Sometimes more efficient A number of cases Small range. Section 6.4 Switch Statement.

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ECE 425

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