Chapter 44

Question 1

What is calling conventions of the language

Answer 1

The behavior of HLL when calling functions is known as calling conventions of language.

Question 2

How are parameter passed in C and pascal

Answer 2

In C parameters are pushed in reverse order with the rightmost being pushed first. While in Pascal they are pushed in proper order with the leftmost being pushed first.

Question 3

Which register holds the return value

Answer 3

Both C and Pascal return up to 32bit large values in EAX and up to 64bit large values in EDX:EAX.

Question 4

Who is responsible for removing the parameters

Answer 4

In C the caller removes the parameter while in Pascal the callee removes them.

Question 5

How can we call assembly with C

Answer 5

nasm –f win32 swap.asm

Question 6

In NASM an imported symbol is declared with which directive

Answer 6

External directive

Question 7

In NASM an exported symbol is declared with the which directive

Answer 7

Global directive