syscalls.abc

include ./core.abc

macro stdin 0
macro stdout 1
macro stderr 2

def exit
    asm mov x8 93
    asm mov x0 in
    asm svc 0
    unreachable

def write
    fd := in[0]
    ptr := in[1]
    len := sizeof *ptr
    asm mov x8 64
    asm mov x0 fd
    asm mov x1 ptr
    asm mov x2 len
    asm svc 0

def read
    fd := in[1]
    ptr := &in[0]
    len := sizeof *ptr
    asm mov x8 63
    asm mov x0 fd
    asm mov x1 ptr
    asm mov x2 len
    asm svc 0