diff options
Diffstat (limited to 'include/arpa/nameser.h')
| -rw-r--r-- | include/arpa/nameser.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/include/arpa/nameser.h b/include/arpa/nameser.h index 944fe732a6..efbe956602 100644 --- a/include/arpa/nameser.h +++ b/include/arpa/nameser.h @@ -1 +1,46 @@ #include <resolv/arpa/nameser.h> + +/* If the machine allows unaligned access we can do better than using + the NS_GET16, NS_GET32, NS_PUT16, and NS_PUT32 macros from the + installed header. */ +#include <string.h> +#include <stdint.h> +#include <netinet/in.h> + +extern struct _ns_flagdata _ns_flagdata[] attribute_hidden; + +#if _STRING_ARCH_unaligned + +# undef NS_GET16 +# define NS_GET16(s, cp) \ + do { \ + uint16_t *t_cp = (uint16_t *) (cp); \ + (s) = ntohs (*t_cp); \ + (cp) += NS_INT16SZ; \ + } while (0) + +# undef NS_GET32 +# define NS_GET32(l, cp) \ + do { \ + uint32_t *t_cp = (uint32_t *) (cp); \ + (l) = ntohl (*t_cp); \ + (cp) += NS_INT32SZ; \ + } while (0) + +# undef NS_PUT16 +# define NS_PUT16(s, cp) \ + do { \ + uint16_t *t_cp = (uint16_t *) (cp); \ + *t_cp = htons (s); \ + (cp) += NS_INT16SZ; \ + } while (0) + +# undef NS_PUT32 +# define NS_PUT32(l, cp) \ + do { \ + uint32_t *t_cp = (uint32_t *) (cp); \ + *t_cp = htonl (l); \ + (cp) += NS_INT32SZ; \ + } while (0) + +#endif |