src/include/thread.h |   14 ++++++++++++++

 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/src/include/thread.h b/src/include/thread.h

index 3b3bd19..53773e8 100644

--- a/src/include/thread.h

+++ b/src/include/thread.h

@@ -272,6 +272,11 @@ atomic_exchange_and_add (volatile int *at, int x)

 #elif defined(_WIN32)

     // Windows

     return _InterlockedExchangeAdd ((volatile LONG *)at, x);

+#elif defined (__PPC__)

+   long long r;

+   r = *at;

+   *at += x;

+   return r;

 #else

 #   error No atomics on this platform.

 #endif

@@ -297,6 +302,11 @@ atomic_exchange_and_add (volatile long long *at, long long x)

 #  else

     return InterlockedExchangeAdd64 ((volatile LONGLONG *)at, x);

 #  endif

+#elif defined (__PPC__)

+   long long r;

+   r = *at;

+   *at += x;

+   return r;

 #else

 #   error No atomics on this platform.

 #endif

@@ -322,6 +332,8 @@ atomic_compare_and_exchange (volatile int *at, int compareval, int newval)

     return OSAtomicCompareAndSwap32Barrier (compareval, newval, at);

 #elif defined(_WIN32)

     return (_InterlockedCompareExchange ((volatile LONG *)at, newval, compareval) == compareval);

+#elif defined(__PPC__)

+    return ((*at == compareval) ? (*at = newval), 1 : 0);

 #else

 #   error No atomics on this platform.

 #endif

@@ -341,6 +353,8 @@ atomic_compare_and_exchange (volatile long long *at, long long compareval, long

     return OSAtomicCompareAndSwap64Barrier (compareval, newval, at);

 #elif defined(_WIN32)

     return (_InterlockedCompareExchange64 ((volatile LONGLONG *)at, newval, compareval) == compareval);

+#elif defined(__PPC__)

+    return ((*at == compareval) ? (*at = newval), 1 : 0);

 #else

 #   error No atomics on this platform.

 #endif