ref: 4cd120c00e9285d5900c7e5a568f82ba6413cb7e 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