diff --git a/ftk/src/ftkmisc.cpp b/ftk/src/ftkmisc.cpp
index a547b43..525d7c9 100644
--- a/ftk/src/ftkmisc.cpp
+++ b/ftk/src/ftkmisc.cpp
@@ -1251,6 +1251,10 @@ FLMINT32 FLMAPI f_atomicInc(
 	
 		return( i32Tmp + 1);
 	}
+	#elif defined( FLM_PPC) && defined( FLM_GNUC) && defined( FLM_LINUX)
+	{
+		return( ppc_atomic_add( piTarget, 1));
+	}
 	#elif defined( FLM_UNIX)
 		return( posix_atomic_add_32( piTarget, 1));
 	#else
@@ -1300,6 +1304,10 @@ FLMINT32 FLMAPI f_atomicDec(
 	
 		return( i32Tmp - 1);
 	}
+	#elif defined( FLM_PPC) && defined( FLM_GNUC) && defined( FLM_LINUX)
+	{
+		return( ppc_atomic_add( piTarget, -1));
+	}
 	#elif defined( FLM_UNIX)
 		return( posix_atomic_add_32( piTarget, -1));
 	#else
@@ -1373,6 +1381,10 @@ FLMINT32 FLMAPI f_atomicExchange(
 	
 		return( i32OldVal);
 	}
+	#elif defined( FLM_PPC) && defined( FLM_GNUC) && defined( FLM_LINUX)
+	{
+		return( ppc_atomic_xchg( piTarget, i32NewVal));
+	}
 	#elif defined( FLM_UNIX)
 		return( posix_atomic_xchg_32( piTarget, i32NewVal));
 	#else
diff --git a/ftk/src/ftksys.h b/ftk/src/ftksys.h
index 982a285..b4a3316 100644
--- a/ftk/src/ftksys.h
+++ b/ftk/src/ftksys.h
@@ -208,6 +208,24 @@
 		FLMINT32						iNewValue);
 	#endif
 	
+	/**********************************************************************
+	Desc:
+	**********************************************************************/
+	#if defined( FLM_PPC) && defined( FLM_GNUC) && defined( FLM_LINUX)
+		extern "C"  FLMATOMIC ppc_atomic_add(
+			FLMATOMIC *		piTarget,
+			FLMINT32			iDelta);
+	#endif
+	
+	/**********************************************************************
+	Desc:
+	**********************************************************************/
+	#if defined( FLM_PPC) && defined( FLM_GNUC) && defined( FLM_LINUX)
+		extern "C"  FLMATOMIC ppc_atomic_xchg(
+			FLMATOMIC *		piTarget,
+			FLMATOMIC		iNewValue);
+	#endif
+	
 	/**********************************************************************
 	Desc:
 	**********************************************************************/
diff --git a/ftk/src/ftkunix.cpp b/ftk/src/ftkunix.cpp
index 3877ede..19ab517 100644
--- a/ftk/src/ftkunix.cpp
+++ b/ftk/src/ftkunix.cpp
@@ -1352,6 +1352,57 @@ void sparc_asm_code( void)
 }
 #endif
 
+/****************************************************************************
+Desc:
+****************************************************************************/
+#if defined( FLM_PPC) && defined( FLM_GNUC) && defined( FLM_LINUX)
+FLMATOMIC ppc_atomic_add(
+	FLMATOMIC *		piTarget,
+	FLMINT32			iDelta)
+{
+	long	result;
+
+	__asm__ __volatile__(
+		"sync\n"
+		"1:\n"
+		"lwarx		%0, 0, %2\n"
+		"addc			%0, %0, %3\n"
+		"stwcx.		%0, 0, %2\n"
+		"bne-			1b\n"
+		"isync"
+			: "=&b" (result), "=m" (*piTarget)
+			: "b" (piTarget), "r" (iDelta)
+			: "cr0", "memory");
+
+	return( result);
+}
+#endif
+
+/****************************************************************************
+Desc:
+****************************************************************************/
+#if defined( FLM_PPC) && defined( FLM_GNUC) && defined( FLM_LINUX)
+FLMATOMIC ppc_atomic_xchg(
+	FLMATOMIC *		piTarget,
+	FLMATOMIC		iNewValue)
+{
+	long	iOldVal;
+
+	__asm__ __volatile__(
+		"sync\n"
+		"1:\n"
+		"lwarx		%0, 0, %2\n"
+		"stwcx.		%3, 0, %2\n"
+		"bne-			1b\n"
+		"isync"
+			: "=&b" (iOldVal), "=m" (*piTarget)
+			: "b" (piTarget), "r" (iNewValue)
+			: "cr0", "memory");
+
+	return( iOldVal);
+}
+#endif
+
 /****************************************************************************
 Desc:
 ****************************************************************************/