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| 292 | jermar | 1 | /* |
| 2 | * Copyright (C) 2005 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #ifndef __ppc_BYTEORDER_H__ |
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| 30 | #define __ppc_BYTEORDER_H__ |
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| 31 | |||
| 32 | #include <arch/types.h> |
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| 33 | |||
| 294 | jermar | 34 | /** Convert little-endian __native to host __native |
| 292 | jermar | 35 | * |
| 294 | jermar | 36 | * Convert little-endian __native parameter to host endianess. |
| 292 | jermar | 37 | * |
| 294 | jermar | 38 | * @param n Little-endian __native argument. |
| 292 | jermar | 39 | * |
| 40 | * @return Result in host endianess. |
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| 41 | * |
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| 42 | */ |
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| 332 | palkovsky | 43 | static inline __u64 u64_le2host(__u64 n) |
| 44 | { |
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| 45 | return ((n & 0xff) << 56) | |
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| 46 | ((n & 0xff00) << 40) | |
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| 47 | ((n & 0xff0000) << 24) | |
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| 48 | ((n & 0xff000000LL) << 8) | |
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| 49 | ((n & 0xff00000000LL) >>8) | |
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| 50 | ((n & 0xff0000000000LL) >> 24) | |
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| 51 | ((n & 0xff000000000000LL) >> 40) | |
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| 52 | ((n & 0xff00000000000000LL) >> 56); |
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| 53 | } |
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| 292 | jermar | 54 | static inline __native native_le2host(__native n) |
| 55 | { |
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| 56 | __address v; |
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| 57 | |||
| 58 | __asm__ volatile ("lwbrx %0, %1, %2\n" : "=r" (v) : "i" (0) , "r" (&n)); |
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| 59 | |||
| 60 | return v; |
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| 61 | } |
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| 62 | #endif |