CS208 Introduction to Computer Systems
Friday, 1 May 2026

+ questions

+ addressing modes
- %rcx -- "register" mode, just refers to the value in a register
            note, these operands can be rax, eax, ax, al, ah...
- $0x2C -- "immediate" mode; just a constant
- (%rsp) -- "indirect"; (%rsp) refers to the data pointed to by rsp
- (%rbx, %rcx, 4)
- (%rbx, %rcx, 1) vs. (%rbx, %rcx)
- 0x80(%rsp, %rcx, 4)
- ...

+ LEA

+ first encounter: gdb