ref: 3979c0fcf50f1ac9df42a871f8627b0fec59ef0d dir: /src/libc/arch/arm64/linux/_cerrno.s/
.file "_cerrno.s" .globl _cerrno _cerrno: cmp x0,#0 b.lt 1f ret 1: neg x0,x0 adr x1,errno str w0,[x1] mov x0,#-1 ret