4. Challenge: Another assembler (called NASM) permits the PUSH instruction to li

Question

4. Challenge: Another assembler (called NASM) permits the PUSH instruction to list multiple specific registers. Why might this approach be better than the PUSHAD instruction in MASM? Here is a NASM example PUSH EAX EBX ECX Challenge: Suppose there were no PUSH instruction. Write a sequence of two other instructions that would accomplish the same as push cax. 5. 6. (Truel False): The RET instruction pops the top of the stack into the instruction pointer. 7· (True False): Nested procedure calls are not permitted by the Microsoft assembler unless 8. (Truel False): In protected mode, each procedure call uses a minimum of 4 bytes of stack 9. (True/ False): The ESI and EDI registers cannot be used when passing 32-bit parameters 10. (True/ 11. (True/ False): The USES operator lets you name all registers that are modified within a the NESTED operator is used in the procedure definition. space. to procedures. False): The ArraySum procedure (section 5.2.5) receives a pointer to any array of doublewords. procedure. 12. (True/ False): The USES operator only generates 13. (Truel False): The register list in the USES directive must use commas to scparate the 14. Which statement(s) in the ArraySum procedure (Section 5.2.5) would have to be 15. What will be the final value in EAX after these instructions execute? PUSH instructions, so you must code instructions yourself register names. modified so it could accumulate a ArraySum and test it n array of 16-bit words? Create such a version of push 5 push 6 pop cax pop eax

Explanation / Answer

6)Answer:

True

Explanation:

The RET instruction pops the top of the stack into the instruction pointer

7)Answer:

False

8)Answer:

True

Explanation:

In protected mode, each procedure call uses a minimum of 4 bytes of stack space

9)Answer:

False

10)Answer:

True

11)Answer:

True

Explanation:

The USES operator lets you name all registers that are modified within a procedure

12)Answer:

false

13)Answer:

false

15)Answer:

eax = 5

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