| From f3a1ea9c7af493b873641fa4263e1b2101fc277b Mon Sep 17 00:00:00 2001 |
| From: Jaegeuk Kim <jaegeuk@kernel.org> |
| Date: Mon, 22 Sep 2014 22:22:33 -0700 |
| Subject: [PATCH] f2fs-tools: fix for build big-endian processors |
| |
| This patch fixes build failure on big-endian systems. |
| |
| Reported-and-Tested-by: Jan Engelhardt <jengelh@inai.de> |
| Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
| Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar> |
| --- |
| include/f2fs_fs.h | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 1 file changed, 60 insertions(+) |
| |
| diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h |
| index 6367e05..df37cdf 100644 |
| --- a/include/f2fs_fs.h |
| +++ b/include/f2fs_fs.h |
| @@ -5,6 +5,9 @@ |
| * http://www.samsung.com/ |
| * |
| * Dual licensed under the GPL or LGPL version 2 licenses. |
| + * |
| + * The byteswap codes are copied from: |
| + * samba_3_master/lib/ccan/endian/endian.h under LGPL 2.1 |
| */ |
| #ifndef __F2FS_FS_H__ |
| #define __F2FS_FS_H__ |
| @@ -26,6 +29,63 @@ typedef u32 nid_t; |
| typedef u8 bool; |
| typedef unsigned long pgoff_t; |
| |
| +#if HAVE_BYTESWAP_H |
| +#include <byteswap.h> |
| +#else |
| +/** |
| + * bswap_16 - reverse bytes in a uint16_t value. |
| + * @val: value whose bytes to swap. |
| + * |
| + * Example: |
| + * // Output contains "1024 is 4 as two bytes reversed" |
| + * printf("1024 is %u as two bytes reversed\n", bswap_16(1024)); |
| + */ |
| +static inline uint16_t bswap_16(uint16_t val) |
| +{ |
| + return ((val & (uint16_t)0x00ffU) << 8) |
| + | ((val & (uint16_t)0xff00U) >> 8); |
| +} |
| + |
| +/** |
| + * bswap_32 - reverse bytes in a uint32_t value. |
| + * @val: value whose bytes to swap. |
| + * |
| + * Example: |
| + * // Output contains "1024 is 262144 as four bytes reversed" |
| + * printf("1024 is %u as four bytes reversed\n", bswap_32(1024)); |
| + */ |
| +static inline uint32_t bswap_32(uint32_t val) |
| +{ |
| + return ((val & (uint32_t)0x000000ffUL) << 24) |
| + | ((val & (uint32_t)0x0000ff00UL) << 8) |
| + | ((val & (uint32_t)0x00ff0000UL) >> 8) |
| + | ((val & (uint32_t)0xff000000UL) >> 24); |
| +} |
| +#endif /* !HAVE_BYTESWAP_H */ |
| + |
| +#if !HAVE_BSWAP_64 |
| +/** |
| + * bswap_64 - reverse bytes in a uint64_t value. |
| + * @val: value whose bytes to swap. |
| + * |
| + * Example: |
| + * // Output contains "1024 is 1125899906842624 as eight bytes reversed" |
| + * printf("1024 is %llu as eight bytes reversed\n", |
| + * (unsigned long long)bswap_64(1024)); |
| + */ |
| +static inline uint64_t bswap_64(uint64_t val) |
| +{ |
| + return ((val & (uint64_t)0x00000000000000ffULL) << 56) |
| + | ((val & (uint64_t)0x000000000000ff00ULL) << 40) |
| + | ((val & (uint64_t)0x0000000000ff0000ULL) << 24) |
| + | ((val & (uint64_t)0x00000000ff000000ULL) << 8) |
| + | ((val & (uint64_t)0x000000ff00000000ULL) >> 8) |
| + | ((val & (uint64_t)0x0000ff0000000000ULL) >> 24) |
| + | ((val & (uint64_t)0x00ff000000000000ULL) >> 40) |
| + | ((val & (uint64_t)0xff00000000000000ULL) >> 56); |
| +} |
| +#endif |
| + |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| #define le16_to_cpu(x) ((__u16)(x)) |
| #define le32_to_cpu(x) ((__u32)(x)) |
| -- |
| 2.0.4 |
| |