Consider the following code: f: mova ret main: pushq rbx movg $0, rbx call f popq rbx // LINE 10 %rax What should go in the blank if we wish to ensure that %rax and %rbx end up with the same value on LINE 10? Hint: think about how the stack works. O A. 8(%rsp) O B. -8(%rsp) C. 16(%rsp) O D. -16(%rsp) O E. (%rsp)

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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Consider the following code:
f:
movq
ret
main:
popq %rbx
// LINE 10
I
pushq %rbx
movq $0, %rbx
call f
%rax
A. 8(%rsp)
B. -8(%rsp)
C. 16(%rsp)
D. -16(%rsp)
E. (%rsp)
What should go in the blank if we wish to ensure that %rax and %rbx end up with the same value on LINE 10? Hint: think about how the stack works.
Transcribed Image Text:Consider the following code: f: movq ret main: popq %rbx // LINE 10 I pushq %rbx movq $0, %rbx call f %rax A. 8(%rsp) B. -8(%rsp) C. 16(%rsp) D. -16(%rsp) E. (%rsp) What should go in the blank if we wish to ensure that %rax and %rbx end up with the same value on LINE 10? Hint: think about how the stack works.
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Answer: E (%rsp)

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