Which command will you use to call a function?

QUESTION

Which command will you use to call a function?

a) BFUNC

b) CALL

c) BL

d) BLT

 

ANSWER

c) BL

In ARM assembly language, the BL command is used to call a function. BL stands for Brach with Link. 

 

QUESTION

Which command you may use to return from a function?

a) GOTO

b) RET

C) BX

d) BLO

 

ANSWER

c) BX

 In ARM assembly language, the BX command is used to return from a function. A function can return by moving the contents of the LR register back to PC using the BX command on storing the instruction into the link register.

 

QUESTION

Which command will move more than one register into memory?

a) STR

b) LDR

c) POP

d) PUSH

 

ANSWER

d) PUSH

PUSH command will store multiple registers onto the stack and updates the stack pointer. The suitable option is a push.