diff options
Diffstat (limited to 'inet')
| -rw-r--r-- | inet/Makefile | 2 | ||||
| -rw-r--r-- | inet/htontest.c | 70 | ||||
| -rw-r--r-- | inet/netinet/in.h | 41 |
3 files changed, 84 insertions, 29 deletions
diff --git a/inet/Makefile b/inet/Makefile index 47570f131c..0237d0b45d 100644 --- a/inet/Makefile +++ b/inet/Makefile @@ -46,6 +46,8 @@ routines := htonl htons \ getaliasent_r getaliasent getaliasname getaliasname_r \ in6_addr getnameinfo if_index +tests := htontest + # No warnings about losing BSD code. CFLAGS-rcmd.c = -w CFLAGS-rexec.c = -w diff --git a/inet/htontest.c b/inet/htontest.c new file mode 100644 index 0000000000..87167b44a3 --- /dev/null +++ b/inet/htontest.c @@ -0,0 +1,70 @@ +/* Test hton/ntoh functions. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <endian.h> +#include <stdio.h> +#include <netinet/in.h> + +#if BYTE_ORDER == BIG_ENDIAN +# define TEST(orig, swapped, fct) \ + if ((fct (orig)) != (orig)) { \ + printf ("Failed for %s -> %#x\n", #fct "(" #orig ")", fct (orig)); \ + result = 1; \ + } +#elif BYTE_ORDER == LITTLE_ENDIAN +# define TEST(orig, swapped, fct) \ + if ((fct (orig)) != (swapped)) { \ + printf ("Failed for %s -> %#x\n", #fct "(" #orig ")", fct (orig)); \ + result = 1; \ + } +#else +# error "Bah, what kind of system do you use?" +#endif + +u_int32_t lo = 0x67452301; +u_int16_t foo = 0x1234; + +int +main (void) +{ + int result = 0; + + TEST (0x67452301, 0x01234567, htonl); + TEST (0x67452301, 0x01234567, (htonl)); + TEST (0x67452301, 0x01234567, ntohl); + TEST (0x67452301, 0x01234567, (ntohl)); + + TEST (lo, 0x01234567, htonl); + TEST (lo, 0x01234567, (htonl)); + TEST (lo, 0x01234567, ntohl); + TEST (lo, 0x01234567, (ntohl)); + + TEST (0x1234, 0x3412, htons); + TEST (0x1234, 0x3412, (htons)); + TEST (0x1234, 0x3412, ntohs); + TEST (0x1234, 0x3412, (ntohs)); + + TEST (foo, 0x3412, htons); + TEST (foo, 0x3412, (htons)); + TEST (foo, 0x3412, ntohs); + TEST (foo, 0x3412, (ntohs)); + + return result; +} diff --git a/inet/netinet/in.h b/inet/netinet/in.h index ac0d167287..d2a366b51c 100644 --- a/inet/netinet/in.h +++ b/inet/netinet/in.h @@ -185,9 +185,9 @@ struct sockaddr_in struct sockaddr_in6 { __SOCKADDR_COMMON (sin6_); - u_int16_t sin6_port; /* Transport layer port # */ - u_int32_t sin6_flowinfo; /* IPv6 flow information */ - struct in6_addr sin6_addr; /* IPv6 address */ + u_int16_t sin6_port; /* Transport layer port # */ + u_int32_t sin6_flowinfo; /* IPv6 flow information */ + struct in6_addr sin6_addr; /* IPv6 address */ }; /* IPv6 multicast request. */ @@ -197,7 +197,7 @@ struct ipv6_mreq struct in6_addr ipv6mr_multiaddr; /* local IPv6 address of interface */ - int ipv6mr_ifindex; + int ipv6mr_ifindex; }; /* Get system-specific definitions. */ @@ -210,18 +210,17 @@ struct ipv6_mreq this was a short-sighted decision since on different systems the types may have different representations but the values are always the same. */ -extern u_int32_t __ntohl __P ((u_int32_t __netlong)); extern u_int32_t ntohl __P ((u_int32_t __netlong)); -extern u_int16_t __ntohs __P ((u_int16_t __netshort)); extern u_int16_t ntohs __P ((u_int16_t __netshort)); -extern u_int32_t __htonl __P ((u_int32_t __hostlong)); extern u_int32_t htonl __P ((u_int32_t __hostlong)); -extern u_int16_t __htons __P ((u_int16_t __hostshort)); extern u_int16_t htons __P ((u_int16_t __hostshort)); #include <endian.h> -#if __BYTE_ORDER == __BIG_ENDIAN +/* Get machine dependent optimized versions of byte swapping functions. */ +#include <bits/byteswap.h> + +#if __BYTE_ORDER == __BIG_ENDIAN && defined __OPTIMIZE__ /* The host byte order is the same as network byte order, so these functions are all just identity. */ # define ntohl(x) (x) @@ -230,26 +229,10 @@ extern u_int16_t htons __P ((u_int16_t __hostshort)); # define htons(x) (x) #else # if __BYTE_ORDER == __LITTLE_ENDIAN && defined __OPTIMIZE__ -# define ntohl(x) (__builtin_constant_p (x) \ - ? __constant_htontohl (x) : __ntohl (x)) -# define ntohs(x) (__builtin_constant_p (x) \ - ? __constant_htontohs (x) : __ntohs (x)) -# define htonl(x) (__builtin_constant_p (x) \ - ? __constant_htontohl (x) : __htonl (x)) -# define htons(x) (__builtin_constant_p (x) \ - ? __constant_htontohl (x) : __htonl (x)) - -# define __constant_htontohl(x) \ - ((((x) & 0xff000000) >> 24) | \ - (((x) & 0x00ff0000) >> 8) | \ - (((x) & 0x0000ff00) << 8) | \ - (((x) & 0x000000ff) << 24)) -# define __constant_htontohs(x) \ - ((((x) & 0x0000ff00) >> 8) | \ - (((x) & 0x000000ff) << 8)) - -/* Now get machine dependent optimized versions for the real work. */ -# include <bits/htontoh.h> +# define ntohl(x) __bswap_32 (x) +# define ntohs(x) __bswap_16 (x) +# define htonl(x) __bswap_32 (x) +# define htons(x) __bswap_16 (x) # endif #endif |