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  → /SPARTAN/trunk/arch/ia32/include/barrier.h @ 456

  → /SPARTAN/trunk/arch/ia32/include/barrier.h @ 457

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Ignore whitespace Rev 456 → Rev 457

/SPARTAN/trunk/arch/ia32/include/barrier.h
43,18 → 43,16
#define CS_ENTER_BARRIER() __asm__ volatile ("" ::: "memory")
#define CS_LEAVE_BARRIER() __asm__ volatile ("" ::: "memory")
#ifdef __STRONG_ORDERING__
#define memory_barrier()
#define read_barrier()
#define write_barrier()
#if (FENCES == p4)
# define memory_barrier() __asm__ volatile ("mfence\n" ::: "memory")
# define read_barrier() __asm__ volatile ("sfence\n" ::: "memory")
# define write_barrier() __asm__ volatile ("lfence\n" ::: "memory")
#elif (FENCES == p3)
# define memory_barrier() __asm__ volatile ("xchgl %%eax,%%eax\n" ::: "memory")
# define read_barrier() __asm__ volatile ("sfence\n" ::: "memory")
# define write_barrier() __asm__ volatile ("xchgl %%eax,%%eax\n" ::: "memory")
#else
#define memory_barrier() __asm__ volatile ("mfence\n" ::: "memory")
#define read_barrier() __asm__ volatile ("sfence\n" ::: "memory")
#define write_barrier() __asm__ volatile ("lfence\n" ::: "memory")
# error Unsupported FENCES value
#endif
#endif