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  → /SPARTAN/trunk/arch/ia32/include/barrier.h @ 467

  → /SPARTAN/trunk/arch/ia32/include/barrier.h @ 468

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Ignore whitespace Rev 467 → Rev 468

/SPARTAN/trunk/arch/ia32/include/barrier.h
43,16 → 43,14
#define CS_ENTER_BARRIER() __asm__ volatile ("" ::: "memory")
#define CS_LEAVE_BARRIER() __asm__ volatile ("" ::: "memory")
#if (FENCES == p4)
#ifdef CONFIG_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
# error Unsupported FENCES value
# define read_barrier() __asm__ volatile ("lfence\n" ::: "memory")
# define write_barrier() __asm__ volatile ("sfence\n" ::: "memory")
#elif CONFIG_FENCES_P3
# define memory_barrier() __asm__ volatile ("\n" ::: "memory")
# define read_barrier() __asm__ volatile ("\n" ::: "memory")
# define write_barrier() __asm__ volatile ("sfence\n" ::: "memory")
#endif
#endif