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Engineering
Computer Science
long reverse_engineer (long a, long b, long c);

long reverse_engineer (long a, long b, long c);

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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For a function with prototype long reverse_engineer (long a, long b, long c); GCC generates the following assembly code: reverse_engineer: cmpq jge .L2: .L1: .L3: cmpq jle movq subq ret leaq ret cmpq jle movq subq ret leaq ret %rsi, %rdi .L1 %rdx, %rdi .L2 %rdx, %rax %rdi, %rax (%rdi,%rdx), %rax %rdx, %rsi .L3 %rdx, %rax %rsi, %rax (%rsi,%rdx), %rax Write idiomatic C code (i.e., without goto statements) for the function reverse_engineer that will have an effect equivalent to the assembly code shown.
Transcribed Image Text:For a function with prototype long reverse_engineer (long a, long b, long c); GCC generates the following assembly code: reverse_engineer: cmpq jge .L2: .L1: .L3: cmpq jle movq subq ret leaq ret cmpq jle movq subq ret leaq ret %rsi, %rdi .L1 %rdx, %rdi .L2 %rdx, %rax %rdi, %rax (%rdi,%rdx), %rax %rdx, %rsi .L3 %rdx, %rax %rsi, %rax (%rsi,%rdx), %rax Write idiomatic C code (i.e., without goto statements) for the function reverse_engineer that will have an effect equivalent to the assembly code shown.
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