bits 64

global read
read:
    mov rax, 0
    syscall
    ret

global write
write:
    mov rax, 1
    syscall
    ret

global getcwd
getcwd:
    mov rax, 2
    syscall
    ret

global chdir
chdir:
    mov rax, 3
    syscall
    ret

global spawn
spawn:
    mov rax, 4
    syscall
    ret

global waitpid
waitpid:
    mov rax, 5
    syscall
    ret

global open
open:
    mov rax, 6
    syscall
    ret

global close
close:
    mov rax, 7
    syscall
    ret

global truncate
truncate:
    mov rax, 8
    syscall
    ret

global exit
exit:
    mov rax, 60
    syscall
    ; never returns