Question: The following assembly-code function lets us determine the behavior of the instruction popq %rsp for x86-64: We find this function always returns 0xabcd. What does

The following assembly-code function lets us determine the behavior of the instruction popq %rsp for x86-64:

1 2 3 5 6 7 8 text .globl poptest poptest: movq pushq popa movq movg ret %rap, %rdi $0xabcd %rsp %rap. %rax

We find this function always returns 0xabcd. What does this imply about the behavior of popq %rsp? What other Y86-64 instruction would have the exact same behavior?

1 2 3 5 6 7 8 text .globl poptest poptest: movq pushq popa movq movg ret %rap, %rdi $0xabcd %rsp %rap. %rax %rdi. %rsp Save stack pointer Push test value Pop to stack pointer Set popped value as return value Restore stack pointer

Step by Step Solution

★★★★★

3.31 Rating (151 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

It is even more difficult to imagine why anyone would want to pop to the stack p... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Computer Systems A Programmers Perspective Questions!

The first case at the end of this chapter and numerous subsequent chapters is a series of integrative cases involving Wal-Mart Stores, Inc. (Walmart). The series of cases applies the concepts and...

Let us determine the behavior of the instruction pushq %rsp for an x86-64 processor. We could try reading the Intel documentation on this instruction, but a simpler approach is to conduct an...

Planning is one of the most important management functions in any business. A front office managers first step in planning should involve determine the departments goals. Planning also includes...

Let us determine the behavior of the instruction pushq % rsp for an x 8 6 - 6 4 processor. We could try reading the Intel documentation on this instruction, but a simpler approach is to conduct an...

Only the popq instruction uses both register file write ports simultaneously. For the instruction popq %rsp, the same address will be used for both the E and M write ports, but with different data....

Assume the two register writes in the write-back stage for popq occur in the order listed in Figure 4.20.What would be the effect of executing popq %rsp? Does this conform to the desired behavior for...

What would be the effect of the instruction pushq %rsp according to the steps listed in Figure 4.20? Does this conform to the desired behavior for Y86-64, as determined in Problem 4.7? Problem 4.7...

2.7. Explicit Solutions to Dierential Equations 109 power (kw) 20 15 10 5 0 08:00 10:00 12:00 14:00 16:00 time 18:00 2.7 Explicit Solutions to Dierential Equations In the very rare case in which an...

Question #1: The author gives several reasons why the blame cast on the EMH for the global financial crisis is unfounded. Which one makes the most sense to you? Why? Which argument do you disagree...

What are the implications for corporate financial managers of the EMH as articulated and defended by the author? Frame you answer around implications for issues such as capital raising, dividend...

The total liabilities of Sunland Company decreased by $84000 during the month of August 2022 Stockholders equity increased by $31000 during this period By what amount and in what direction must total...

Kristen Lu purchased a used automobile for $8,000 at the beginning of last year and incurred the following operating costs: The variable operating cost consists of gasoline, oil, tires, maintenance,...

Upon graduation from college, Warren Roberge was able to defer payment on his $ 2 5 0 0 0 student loan for 9 months. Since the interest will no longer be paid on his behalf, it will be added to the...

Define customer-relationship management and understand its value.

Suppose we are given two n-element sorted sequences A and B each with distinct elements, but potentially some elements that are in both sequences. Describe an O(n)-time method for computing a...

Is our linked-list-based implementation of merge-sort (Code Fragment 12.3) stable? Explain why or why not. /** Merge contents of sorted queues S1 and S2 into empty queue S. */ public static void...

Is our array-based implementation of merge-sort given in Section 12.1.2 stable? Explain why or why not.

The larger the cost of a benefit category, Multiple Choice the more likely it is that the category will maintain level costs in the future. the less likely companies are to worry about quality. the...

As expressed by Adam Smith, capitalism Question 18 options: argued against exporting goods. argued that consumption was an important part of a healthy economy. argued in favor of imposing high...

Keynes emphasized the coordination argument as one of the reasons that wages are sticky. The coordination argument is simplified as a market-oriented economy will automatically adjust wages. a...