From c97fd1837919a1304e1c55a483e996720e259477 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Sun, 16 Oct 2011 03:02:46 -0400
Subject: [PATCH] Let iOS use OSAtomicCompareAndSwap32Barrier() if nothing else
 is available.

---
 src/atomic/SDL_spinlock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/atomic/SDL_spinlock.c b/src/atomic/SDL_spinlock.c
index c96939fb0..653bff0e5 100644
--- a/src/atomic/SDL_spinlock.c
+++ b/src/atomic/SDL_spinlock.c
@@ -81,7 +81,7 @@ SDL_AtomicTryLock(SDL_SpinLock *lock)
         : "=r" (result) : "r" (lock), "0" (1) : "cc", "memory");
 	return (result == 0);
 
-#elif defined(__MACOSX__)
+#elif defined(__MACOSX__) || defined(__IPHONEOS__)
     /* Maybe used for PowerPC, but the Intel asm or gcc atomics are favored. */
     return OSAtomicCompareAndSwap32Barrier(0, 1, lock);