5.93 · exercise

Intermediate quiz: memory and the stack

Addressing modes, locals reached by frame-pointer offset, and the 16-byte alignment sp has to keep.

0 of 10 correct

What is the key difference between pre-indexed and post-indexed addressing modes?

How many bytes does the strh (store halfword) instruction write to memory?

What is the purpose of the expression -20 & -16 when it is used to allocate stack memory?

What specific action does stp x29, x30, [sp, -16]! perform?

How are stack variables typically addressed inside the body of a function?

To declare an alias for a register so the code reads better, such as naming x29 as fp, which assembler directive should you use?

How are variables that are local to one block of code, such as the body of an if statement, managed in assembly?

Which instruction loads 4 bytes from RAM into an X register and sign-extends the high-order bits?

What defines a full, descending stack?

What happens if a program performs a memory access through a stack pointer that is not evenly divisible by 16?