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Added support for aarch64 memory barrier instruction

Sam Lantinga 7 years ago
parent
8fb3885c3c
commit
dba9979f44
1 changed files with 3 additions and 0 deletions
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  1. 3 0
      include/SDL_atomic.h

+ 3 - 0
include/SDL_atomic.h
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@@ -158,6 +158,9 @@ extern DECLSPEC void SDLCALL SDL_MemoryBarrierAcquireFunction(void);
 
 #if defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
 
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("lwsync" : : : "memory")
 
 #define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("lwsync" : : : "memory")
 
+#elif defined(__GNUC__) && defined(__aarch64__)
 
+#define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("dmb ish" : : : "memory")
 
+#define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("dmb ish" : : : "memory")
 
 #elif defined(__GNUC__) && defined(__arm__)
 
 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__)
 
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("dmb ish" : : : "memory")