#define _ERRNO_H 1 #include <bits/errno.h> #include <sysdep.h> .text ENTRY (pthread_spin_trylock) mov a2, a0 movi a0, 0 movi a1, 1 trap 2 // trap 2 use to cmpxchg cmpnei a0, 0 bf 1f movi a0, EBUSY 1: jmp r15 END (pthread_spin_trylock)
