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467 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
467 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
468 | /* ECB.H BEGIN */ |
468 | /* ECB.H BEGIN */ |
469 | /* |
469 | /* |
470 | * libecb - http://software.schmorp.de/pkg/libecb |
470 | * libecb - http://software.schmorp.de/pkg/libecb |
471 | * |
471 | * |
472 | * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> |
472 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
473 | * Copyright (©) 2011 Emanuele Giaquinta |
473 | * Copyright (©) 2011 Emanuele Giaquinta |
474 | * All rights reserved. |
474 | * All rights reserved. |
475 | * |
475 | * |
476 | * Redistribution and use in source and binary forms, with or without modifica- |
476 | * Redistribution and use in source and binary forms, with or without modifica- |
477 | * tion, are permitted provided that the following conditions are met: |
477 | * tion, are permitted provided that the following conditions are met: |
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539 | #if ECB_NO_THREADS || ECB_NO_SMP |
539 | #if ECB_NO_THREADS || ECB_NO_SMP |
540 | #define ECB_MEMORY_FENCE do { } while (0) |
540 | #define ECB_MEMORY_FENCE do { } while (0) |
541 | #endif |
541 | #endif |
542 | |
542 | |
543 | #ifndef ECB_MEMORY_FENCE |
543 | #ifndef ECB_MEMORY_FENCE |
544 | #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) |
544 | #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_xC >= 0x5110 |
545 | #if __i386__ |
545 | #if __i386__ |
546 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
546 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
547 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
547 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
548 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
548 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
549 | #elif __amd64 |
549 | #elif __amd64 |
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556 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) |
556 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) |
557 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
557 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
558 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
558 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
559 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
559 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
560 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
560 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
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561 | #elif defined(__sparc) |
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|
562 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #StoreLoad | #LoadLoad | #StoreStore" : : : "memory") |
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563 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadLoad" : : : "memory") |
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|
564 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #StoreStore") |
561 | #endif |
565 | #endif |
562 | #endif |
566 | #endif |
563 | #endif |
567 | #endif |
564 | |
568 | |
565 | #ifndef ECB_MEMORY_FENCE |
569 | #ifndef ECB_MEMORY_FENCE |
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573 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
577 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
574 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
578 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
575 | #elif defined(_WIN32) |
579 | #elif defined(_WIN32) |
576 | #include <WinNT.h> |
580 | #include <WinNT.h> |
577 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
581 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
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|
582 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
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|
583 | #include <mbarrier.h> |
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|
584 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
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|
585 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
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|
586 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
578 | #endif |
587 | #endif |
579 | #endif |
588 | #endif |
580 | |
589 | |
581 | #ifndef ECB_MEMORY_FENCE |
590 | #ifndef ECB_MEMORY_FENCE |
582 | #if !ECB_AVOID_PTHREADS |
591 | #if !ECB_AVOID_PTHREADS |
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756 | if (x >> 32) { x >>= 32; r += 32; } |
765 | if (x >> 32) { x >>= 32; r += 32; } |
757 | |
766 | |
758 | return r + ecb_ld32 (x); |
767 | return r + ecb_ld32 (x); |
759 | } |
768 | } |
760 | #endif |
769 | #endif |
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770 | |
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771 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
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772 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
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773 | { |
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774 | return ( (x * 0x0802U & 0x22110U) |
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775 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
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|
776 | } |
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777 | |
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778 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
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779 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
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780 | { |
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781 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
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|
782 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
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|
783 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
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784 | x = ( x >> 8 ) | ( x << 8); |
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785 | |
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786 | return x; |
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|
787 | } |
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788 | |
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789 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
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790 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
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|
791 | { |
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792 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
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793 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
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794 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
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|
795 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
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796 | x = ( x >> 16 ) | ( x << 16); |
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797 | |
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798 | return x; |
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|
799 | } |
761 | |
800 | |
762 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
801 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
763 | /* so for this version we are lazy */ |
802 | /* so for this version we are lazy */ |
764 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
803 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
765 | ecb_function_ int |
804 | ecb_function_ int |