diff options
Diffstat (limited to 'libglusterfs/src/byte-order.h')
| -rw-r--r-- | libglusterfs/src/byte-order.h | 195 |
1 files changed, 173 insertions, 22 deletions
diff --git a/libglusterfs/src/byte-order.h b/libglusterfs/src/byte-order.h index cabfcf4c6..4101db2c7 100644 --- a/libglusterfs/src/byte-order.h +++ b/libglusterfs/src/byte-order.h @@ -1,20 +1,11 @@ /* - Copyright (c) 2008-2010 Gluster, Inc. <http://www.gluster.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU Affero General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Affero General Public License for more details. - - You should have received a copy of the GNU Affero General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ #ifndef _BYTE_ORDER_H @@ -38,6 +29,23 @@ static uint64_t (*hton64) (uint64_t); #define ntoh32 hton32 #define ntoh64 hton64 +static uint16_t (*htole16) (uint16_t); +static uint32_t (*htole32) (uint32_t); +static uint64_t (*htole64) (uint64_t); + +#define letoh16 htole16 +#define letoh32 htole32 +#define letoh64 htole64 + +static uint16_t (*htobe16) (uint16_t); +static uint32_t (*htobe32) (uint32_t); +static uint64_t (*htobe64) (uint64_t); + +#define betoh16 htobe16 +#define betoh32 htobe32 +#define betoh64 htobe64 + + #define do_swap2(x) (((x&LS1) << 8)|(((x&MS1) >> 8))) #define do_swap4(x) ((do_swap2(x&LS2) << 16)|(do_swap2((x&MS2) >> 16))) #define do_swap8(x) ((do_swap4(x&LS4) << 32)|(do_swap4((x&MS4) >> 32))) @@ -86,15 +94,17 @@ __noswap64 (uint64_t x) static inline uint16_t -__byte_order_init16 (uint16_t i) +__byte_order_n16 (uint16_t i) { uint32_t num = 1; if (((char *)(&num))[0] == 1) { + /* cpu is le */ hton16 = __swap16; hton32 = __swap32; hton64 = __swap64; } else { + /* cpu is be */ hton16 = __noswap16; hton32 = __noswap32; hton64 = __noswap64; @@ -105,15 +115,17 @@ __byte_order_init16 (uint16_t i) static inline uint32_t -__byte_order_init32 (uint32_t i) +__byte_order_n32 (uint32_t i) { uint32_t num = 1; if (((char *)(&num))[0] == 1) { + /* cpu is le */ hton16 = __swap16; hton32 = __swap32; hton64 = __swap64; } else { + /* cpu is be */ hton16 = __noswap16; hton32 = __noswap32; hton64 = __noswap64; @@ -124,15 +136,17 @@ __byte_order_init32 (uint32_t i) static inline uint64_t -__byte_order_init64 (uint64_t i) +__byte_order_n64 (uint64_t i) { uint32_t num = 1; if (((char *)(&num))[0] == 1) { + /* cpu is le */ hton16 = __swap16; hton32 = __swap32; hton64 = __swap64; } else { + /* cpu is be */ hton16 = __noswap16; hton32 = __noswap32; hton64 = __noswap64; @@ -142,9 +156,146 @@ __byte_order_init64 (uint64_t i) } -static uint16_t (*hton16) (uint16_t) = __byte_order_init16; -static uint32_t (*hton32) (uint32_t) = __byte_order_init32; -static uint64_t (*hton64) (uint64_t) = __byte_order_init64; +static uint16_t (*hton16) (uint16_t) = __byte_order_n16; +static uint32_t (*hton32) (uint32_t) = __byte_order_n32; +static uint64_t (*hton64) (uint64_t) = __byte_order_n64; + + +static inline uint16_t +__byte_order_le16 (uint16_t i) +{ + uint32_t num = 1; + + if (((char *)(&num))[0] == 1) { + /* cpu is le */ + htole16 = __noswap16; + htole32 = __noswap32; + htole64 = __noswap64; + } else { + /* cpu is be */ + htole16 = __swap16; + htole32 = __swap32; + htole64 = __swap64; + } + + return htole16 (i); +} + + +static inline uint32_t +__byte_order_le32 (uint32_t i) +{ + uint32_t num = 1; + + if (((char *)(&num))[0] == 1) { + /* cpu is le */ + htole16 = __noswap16; + htole32 = __noswap32; + htole64 = __noswap64; + } else { + /* cpu is be */ + htole16 = __swap16; + htole32 = __swap32; + htole64 = __swap64; + } + + return htole32 (i); +} + + +static inline uint64_t +__byte_order_le64 (uint64_t i) +{ + uint32_t num = 1; + + if (((char *)(&num))[0] == 1) { + /* cpu is le */ + htole16 = __noswap16; + htole32 = __noswap32; + htole64 = __noswap64; + } else { + /* cpu is be */ + htole16 = __swap16; + htole32 = __swap32; + htole64 = __swap64; + } + + return htole64 (i); +} + + +static uint16_t (*htole16) (uint16_t) = __byte_order_le16; +static uint32_t (*htole32) (uint32_t) = __byte_order_le32; +static uint64_t (*htole64) (uint64_t) = __byte_order_le64; + + +static inline uint16_t +__byte_order_be16 (uint16_t i) +{ + uint32_t num = 1; + + if (((char *)(&num))[0] == 1) { + /* cpu is le */ + htobe16 = __swap16; + htobe32 = __swap32; + htobe64 = __swap64; + } else { + /* cpu is be */ + htobe16 = __noswap16; + htobe32 = __noswap32; + htobe64 = __noswap64; + } + + return htobe16 (i); +} + + +static inline uint32_t +__byte_order_be32 (uint32_t i) +{ + uint32_t num = 1; + + if (((char *)(&num))[0] == 1) { + /* cpu is le */ + htobe16 = __swap16; + htobe32 = __swap32; + htobe64 = __swap64; + } else { + /* cpu is be */ + htobe16 = __noswap16; + htobe32 = __noswap32; + htobe64 = __noswap64; + } + + return htobe32 (i); +} + + +static inline uint64_t +__byte_order_be64 (uint64_t i) +{ + uint32_t num = 1; + + if (((char *)(&num))[0] == 1) { + /* cpu is le */ + htobe16 = __swap16; + htobe32 = __swap32; + htobe64 = __swap64; + } else { + /* cpu is be */ + htobe16 = __noswap16; + htobe32 = __noswap32; + htobe64 = __noswap64; + } + + return htobe64 (i); +} + + +static uint16_t (*htobe16) (uint16_t) = __byte_order_be16; +static uint32_t (*htobe32) (uint32_t) = __byte_order_be32; +static uint64_t (*htobe64) (uint64_t) = __byte_order_be64; + #endif /* _BYTE_ORDER_H */ |