diff options
Diffstat (limited to 'test/packetdrill/unaligned.h')
-rw-r--r-- | test/packetdrill/unaligned.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/test/packetdrill/unaligned.h b/test/packetdrill/unaligned.h new file mode 100644 index 0000000..f44ee9e --- /dev/null +++ b/test/packetdrill/unaligned.h @@ -0,0 +1,53 @@ +/* + * Copyright 2013 Google Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ +/* + * Author: ncardwell@google.com (Neal Cardwell) + * + * Helpers for portably safe access to unaligned multi-byte values. + */ + +#ifndef __UNALIGNED_H__ +#define __UNALIGNED_H__ + +#include "types.h" + +static inline u32 __get_unaligned_be32(const u8 *p) +{ + return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]; +} + +static inline void __put_unaligned_be32(u32 val, u8 *p) +{ + *p++ = val >> 24; + *p++ = val >> 16; + *p++ = val >> 8; + *p++ = val; +} + +static inline u32 get_unaligned_be32(const void *p) +{ + return __get_unaligned_be32((const u8 *)p); +} + +static inline void put_unaligned_be32(u32 val, void *p) +{ + __put_unaligned_be32(val, p); +} + +#endif /* __UNALIGNED_H__ */ |