Procedural Calls

Question 1

are considered the most important innovation in the development of programming languages.

Answer 1

Procedures

Question 2

is a self-contained computer program that is incorporated into a large program

Answer 2

procedure

Question 3

Procedures are also known as …

Answer 3

subroutines

Question 4

Characteristics of a procedure

Answer 4

1. It allows the same piece of code to be used multiple times.
2. It improves efficient use of storage space in a system.
3. It allows large programming tasks to be subdivided into smaller units.
4. It greatly eases the programming tasks.
5. A procedure call can appear in another procedure, which allows the nesting procedures to an arbitrary depth.
6. All procedure call is matched by a return instruction in the called program.

Question 5

In order to call a procedure from a variety of points, the processor must save the return address so that the return process can take place correctly. The return address can be stored in a …

Answer 5

register, start of the called procedure, or at the top of the stack

Question 6

is a procedure that can be implemented in such a way that more than one process can execute it at the same time without any conflict

Answer 6

reentrant procedure

Question 7

This branches from the present location to the procedure

Answer 7

Call instruction (CALL)

Question 8

A … is an instruction to call a procedure that is in the same code segment as the CALL instruction that calls it.

Answer 8

Near CALL

Question 9

is used to call a procedure from a different segment

Answer 9

Far CALL

Question 10

This instruction pushes the current IP value onto the stack and causes a jump to the entry point of the procedure by placing the address of the entry point in the IP

Answer 10

Call Address

Question 11

This instruction pushes the content of the IP onto the stack and jumps to the offset address in the current code segment

Answer 11

Call Label (Near)

Question 12

This instruction pushes the content of the IP onto the stack and jumps offset address in any memory location

Answer 12

Call Label (Far)

Question 13

This instruction pushes the content of the IP onto the stack and jumps to the offset address in the memory register of the current code segment

Answer 13

CALL Memory (Near)

Question 14

This instruction pushes the content of the IP onto the stack and jumps to the offset address of the register at any memory location

Answer 14

CALL Memory (Far)

Question 15

This returns the control to the place from which a procedure was called

Answer 15

Return instruction (RET)

Question 16

This instruction returns the address from a near procedure. The return will be done by replacing the instruction pointer (IP) with a word from the top of the stack

Answer 16

RET

Question 17

This instruction returns the address from a far procedure. The return will be done by replacing the stack pointer (SP) with a word at the top of the stack.

Answer 17

RETF