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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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Carnegie Mellon

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CS 3214 Computer Systems

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Machine-Level Representation of Programs III

Machine-Level Representation of Programs III. Outline. Jump instructions Translate Control constructs in C to assembly goto branch loop Suggested reading Chap 3.6. Control. Two of the most important parts of program execution Data flow (Accessing and operating data)

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Introduction to Systems Software

Introduction to Systems Software. CSE 361S Fred Kuhns. Plan for Today. Machine-Level Programming: II x86 Condition codes x86 assembly control flow. Condition Codes. Single Bit Registers CF Carry Flag SF Sign Flag ZF Zero Flag OF Overflow Flag

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Machine-Level Programming II: Control Flow

Machine-Level Programming II: Control Flow. CS 367. Topics Condition Codes Setting Testing Control Flow If-then-else Varieties of Loops Switch Statements. lecture9.ppt. Condition Codes. Single Bit Registers CF Carry Flag SF Sign Flag ZF Zero Flag OF Overflow Flag

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Machine-Level Programming II: Control Flow

Machine-Level Programming II: Control Flow. CSC 333. Topics Condition Codes Setting Testing Control Flow If-then-else Varieties of Loops Switch Statements. Condition Codes. Single Bit Registers CF Carry Flag SF Sign Flag ZF Zero Flag OF Overflow Flag

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Machine-Level Programming II: Control Flow

Machine-Level Programming II: Control Flow. Today Condition codes Control flow structures Next time Procedures. Condition codes. Single bit registers CF Carry Flag SF Sign Flag ZF Zero Flag OF Overflow Flag Implicitly set by arithmetic operations addl Src,Dest

460 views • 35 slides

Machine-Level Programming II: Control Flow

Machine-Level Programming II: Control Flow. Topics Condition Codes Setting Testing Control Flow If-then-else Varieties of Loops Switch Statements. Condition Codes. Single Bit Registers CF Carry Flag SF Sign Flag ZF Zero Flag OF Overflow Flag

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Machine-Level Programming II: Control Flow Sept. 16, 2004

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Machine-Level Programming II: Control Flow

446 views • 35 slides

Machine-Level Programming II: Control Flow

Machine-Level Programming II: Control Flow. CS 140. Topics Condition Codes Setting Testing Control Flow If-then-else Varieties of Loops Switch Statements. slides06.ppt. CS 140 Spring 2006. Condition Codes. Single Bit Registers CF Carry Flag SF Sign Flag

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x86-64 Programming III CSE 351 Autumn 2019

x86-64 Programming III CSE 351 Autumn 2019. Instructor: Justin Hsia Teaching Assistants: Andrew Hu Antonio Castelli Cosmo Wang Diya Joy Ivy Yu Kaelin Laundry Maurice Montag Melissa Birchfield Millicent Li Suraj Jagadeesh. http://xkcd.com/1652/. Administrivia.

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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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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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The Hardware/Software Interface CSE351 Winter 2013

258 views • 17 slides

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

339 views • 17 slides