.align {byte}

A directive aligns the current location to a specified boundary by padding with zeros or NOP instructions.

.equ {NAME}, value

A directive, make {NAME} as a symbol to a value constant.

.set {name}, {value}

A directive, define varible symbol {name} with {value}

.type {name}, @function

A directive, define symbol {name} as a function

.globl {name}

A directive, define symbol {name} is visble to ld (link)

pushl {registry}

Push registry to stack. Use long.

popl {registry}

Pop stack to registry. Return long.

movl {a} {registrya}

Save {a} to {registry}. Move long

movb {a} {registry}

Save {a} to {registry}. Move byte.

cmpb {a} {b}
je {c}

Compare {a} with {b}. If they are equal, jump to {c}. Otherwise, continue.

incl {registry}

Increase {registry}

jmp {a}

Jump to {a}