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Ryan C. Gordon 2018-06-29 16:55:55 -04:00
parent 3b173f818d
commit 52857de251
1 changed files with 1 additions and 1 deletions
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src/atomic/SDL_spinlock.c
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@ -122,7 +122,7 @@ SDL_AtomicTryLock(SDL_SpinLock *lock)
/* "REP NOP" is PAUSE, coded for tools that don't know it by that name. */ /* "REP NOP" is PAUSE, coded for tools that don't know it by that name. */
#if (defined(__GNUC__) || defined(__clang__)) && (defined(__i386__) || defined(__x86_64__)) #if (defined(__GNUC__) || defined(__clang__)) && (defined(__i386__) || defined(__x86_64__))
#define PAUSE_INSTRUCTION() __asm__ __volatile__("pause\n") /* Clang lets you do REP NOP, GCC wants PAUSE. */ #define PAUSE_INSTRUCTION() __asm__ __volatile__("pause\n") /* Some assemblers can't do REP NOP, so go with PAUSE. */
#elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64)) #elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
#define PAUSE_INSTRUCTION() _mm_pause() /* this is actually "rep nop" and not a SIMD instruction. No inline asm in MSVC x86-64! */ #define PAUSE_INSTRUCTION() _mm_pause() /* this is actually "rep nop" and not a SIMD instruction. No inline asm in MSVC x86-64! */
#elif defined(__WATCOMC__) && defined(__386__) #elif defined(__WATCOMC__) && defined(__386__)