diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/metag/pthread_spin_lock.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/metag/pthread_spin_lock.S | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/metag/pthread_spin_lock.S b/libpthread/nptl/sysdeps/metag/pthread_spin_lock.S new file mode 100644 index 000000000..66e94c7a9 --- /dev/null +++ b/libpthread/nptl/sysdeps/metag/pthread_spin_lock.S @@ -0,0 +1,20 @@ +! Copyright (C) 2013 Imagination Technologies Ltd. + +! Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + + .text + .global _pthread_spin_lock + .type _pthread_spin_lock,function +_pthread_spin_lock: +1: LNKGETD D0Ar2, [D1Ar1] + CMP D0Ar2, #0 + ADD D0Ar2, D0Ar2, #1 + LNKSETDEQ [D1Ar1], D0Ar2 + BNE 1b + DEFR D0Ar2, TXSTAT + ANDT D0Ar2, D0Ar2, #HI(0x3f000000) + CMPT D0Ar2, #HI(0x02000000) + BNZ 1b + MOV D0Re0, #0 + MOV PC, D1RtP + .size _pthread_spin_lock,.-_pthread_spin_lock |