the Great CS429 Stack™️

a LIFO structure of everything CS429 in my fish brain

what is the SP aligned to and why? why not 8b? how many less-significant bits are 0?

16 bytes, lower 4 bits are 0 because then it’s always a multiple of 16, _________________

first stage of instruction processing

second stage of instruction processing

third stage

fourth stage

fifth stage

sixth stage

how large are instructions in ARM64?

4 bytes

which of the six steps are optional? examples?

4. access and 5. write — example of 4 not being used is in an ADD command (memory doesn’t need accessing) and example of 5 not being used is in a MOV command (no memory writing occurs)

how many bits are given to an offset if it’s unscaled (LOAD)?

how many bits are given to an offset if it’s scaled (LOAD)?

funny thing about referring to WORDS in the context of LOAD?

WORD - 4 bytes (32 bit)

for ldr and str, why is a signed offset allowed to be unscaled?