diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/csky/pthread_spin_lock.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/csky/pthread_spin_lock.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S b/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S new file mode 100644 index 000000000..da6e234eb --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S @@ -0,0 +1,18 @@ +#include <sysdep.h> + + .text + .align 4 + +ENTRY (pthread_spin_lock) + mov a2, a0 +1: + movi a0, 0 + movi a1, 1 + trap 2 // trap 2 use to cmpxchg + cmpnei a0, 0 + bt 1b + movi a0, 0 + jmp r15 + + /* TODO */ +END (pthread_spin_lock) |