X. Consider the following C functions and assembly code Assume that int is 32 bits, short is 16 bits, and the representation is two's complement. Assembly Code: imulq %rsi, %rdi imulq %rdx, %rsi addq %rsi, %rdi leaq (%rdi,%rdi,2), %rax $3, %rax salq ret int function(int a, int b, int c) { int d = a*b; int e = b*c; return 18 (d+e); } int functionB(int a, int b, int c) { int d = a*b; int e = b*c; return 6* (d*e); } int functionC(int a, int b, int c) { int d = a*b; int e = b*c; return 24 (de); } int functionD(int a, int b, int c) { int d = a*b; int e = b*c; return 32 (d*e); } Which of the functions compiled into the assembly code shown?
X. Consider the following C functions and assembly code Assume that int is 32 bits, short is 16 bits, and the representation is two's complement. Assembly Code: imulq %rsi, %rdi imulq %rdx, %rsi addq %rsi, %rdi leaq (%rdi,%rdi,2), %rax $3, %rax salq ret int function(int a, int b, int c) { int d = a*b; int e = b*c; return 18 (d+e); } int functionB(int a, int b, int c) { int d = a*b; int e = b*c; return 6* (d*e); } int functionC(int a, int b, int c) { int d = a*b; int e = b*c; return 24 (de); } int functionD(int a, int b, int c) { int d = a*b; int e = b*c; return 32 (d*e); } Which of the functions compiled into the assembly code shown?
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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Transcribed Image Text:X.
Consider the following C functions and assembly code
Assume that int is 32 bits, short is 16 bits, and the representation is two's
complement.
Assembly Code:
imulq %rsi, %rdi
imulq %rdx, %rsi
addq %rsi, %rdi
leaq
(%rdi, %rdi, 2), %rax
salq $3, %rax
ret
int functionA (int a, int b, int c) {
int d = a*b;
int e = b*c;
return 18 * (d+e);
}
int functionB(int a, int b, int c) {
int d = a*b;
int e = b*c;
return 6* (d*e);
}
int function((int a, int b, int c) {
int d = a*b;
int e = b*c;
return 24 * (d*e);
}
int functionD(int a, int b, int c) {
int d = a*b;
int e = b*c;
return 32* (d*e);
}
Which of the functions compiled into the assembly code shown?
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