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34 lines
1.3 KiB
34 lines
1.3 KiB
#ifndef BARRIER_H
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#define BARRIER_H
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#if defined(__ia64__)
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#define store_barrier() asm volatile ("mf" ::: "memory")
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#elif defined(__x86_64__)
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#define store_barrier() asm volatile("sfence" ::: "memory")
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#elif defined(__i386__)
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#define store_barrier() asm volatile ("": : :"memory")
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#elif defined(__ppc__) || defined(__powerpc__)
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#define store_barrier() asm volatile ("eieio" : : : "memory")
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#elif defined(__s390__) || defined(__s390x__)
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#define store_barrier() asm volatile ("bcr 15,0" : : : "memory")
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#elif defined(__alpha__)
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#define store_barrier() asm volatile("wmb": : :"memory")
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#elif defined(__hppa__)
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#define store_barrier() asm volatile("":::"memory")
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#elif defined(__sparc__)
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#define store_barrier() asm volatile("":::"memory")
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#elif defined(__m68000__) || defined(__m68k__) || defined(mc68000) || defined(_M_M68K)
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#define store_barrier() asm volatile("":::"memory")
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#elif defined(__mips__) /* also mipsel */
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#define store_barrier() do { } while(0)
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#elif defined(__arm__)
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/* taken from linux/arch/arm/kernel/entry-armv.S, thanks to pbrook! */
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typedef void (__kernel_dmb_t)(void);
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#define __kernel_dmb (*(__kernel_dmb_t *)0xffff0fa0)
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#define store_barrier() __kernel_dmb()
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#else
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#error Define store_barrier() for your CPU
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#endif
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#endif
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