Consider the following C functions and assembly code Assume that long is 64 bits, 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 long functionA(long a, long b, long c){ long d = a*b; long e = b*c; return 18* (d+e); } long functionB(long a, long b, long c){ long d = a*b; long e = b*c; return 24 * (d*e); } long functionC(long a, long b, long c) { long d = a*b; longe = b*c; return 24 (d+e); } long function D(long a, long b, long c){ long d = a*b; longe = b^c; return 32* (d^e); Which of the functions compiled into the assembly code shown?
Consider the following C functions and assembly code Assume that long is 64 bits, 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 long functionA(long a, long b, long c){ long d = a*b; long e = b*c; return 18* (d+e); } long functionB(long a, long b, long c){ long d = a*b; long e = b*c; return 24 * (d*e); } long functionC(long a, long b, long c) { long d = a*b; longe = b*c; return 24 (d+e); } long function D(long a, long b, long c){ long d = a*b; longe = b^c; return 32* (d^e); Which of the functions compiled into the assembly code shown?
Computer Networking: A Top-Down Approach (7th Edition)
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Chapter1: Computer Networks And The Internet
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Transcribed Image Text:Consider the following C functions and assembly code
Assume that long is 64 bits, 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
long functionA(long a, long b, long c){
long d = a*b;
longe = b*c;
return 18* (d+e);
long functionB(long a, long b, long c) {
long d = a*b;
longe = b*c;
return 24 * (d*e);
}
long function C(long a, long b, long c) {
long d = a*b;
longe = b*c;
return 24 (d+e);
}
long functionD(long a, long b, long c){
long d = a*b;
longe = b^c;
return 32* (d^e);
}
Which of the functions compiled into the assembly code shown?
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