CS208 Introduction to Computer Systems
Wednesday, 29 October 2025

+ ???

+ Going from C to asm
- think of a C structure, try it out on Comp. Explorer
- think of a C structure try:

    write a function in something.c
    gcc -Wall -g -Og -c -o something.o something.c
    objdump -d something.o
        to see the assembly

+ Going from asm to C
- Watch for
    a(b, c, d) suggests arrays
    
    a(b) is often a struct field access

        typedef struct {
            int radius;
            int centerx;
            int centery;
        } Circle;

        Circle mycircle;
        mycircle.centery = 9;

        ...
        movl $0x9, 8(%rbx) -- 8 bytes forward from the address of mycircle

    if statements
    loops
    ...

+ Machine language, a few basics
...to be continued...

+ Work time