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| 537 | |
537 | |
| 538 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
538 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
| 539 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
539 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
| 540 | |
540 | |
| 541 | #if ECB_NO_THREADS || ECB_NO_SMP |
541 | #if ECB_NO_THREADS || ECB_NO_SMP |
| 542 | #define ECB_MEMORY_FENCE do { } while (0) |
542 | #define ECB_MEMORY_FENCE do { } while (0) |
| 543 | #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) |
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| 544 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) |
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| 545 | #endif |
543 | #endif |
| 546 | |
544 | |
| 547 | #ifndef ECB_MEMORY_FENCE |
545 | #ifndef ECB_MEMORY_FENCE |
| 548 | #if ECB_GCC_VERSION(2,5) |
546 | #if ECB_GCC_VERSION(2,5) |
| 549 | #if __x86 |
547 | #if __x86 |
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… | |
| 555 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
553 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
| 556 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
554 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
| 557 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
555 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
| 558 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
556 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
| 559 | #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ |
557 | #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ |
| 560 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) \ |
558 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) |
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559 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,4" : : "r" (0) : "memory") |
| 561 | || defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
560 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
| 562 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
561 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
| 563 | #define ECB_MEMORY_FENCE \ |
562 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dsb" : : : "memory") |
| 564 | do { \ |
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| 565 | int null = 0; \ |
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| 566 | __asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \ |
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| 567 | while (0) |
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| 568 | #endif |
563 | #endif |
| 569 | #endif |
564 | #endif |
| 570 | #endif |
565 | #endif |
| 571 | |
566 | |
| 572 | #ifndef ECB_MEMORY_FENCE |
567 | #ifndef ECB_MEMORY_FENCE |
