Comment by masklinn

> They are using a classic dollar sign for assignment

They're using a dollar sign for immediates.

As if you can't notice that it's a number.

    addl $4, %eax

that's 3 different completely unnecessary symbols for things which are not ambiguous in the first place:

- the operation width is provided by the registry

- a number is an immediate

- a register is named

Hence the much less noisy Intel syntax:

    add eax, 4