1 /* This file is generated automatically by configure */ 2 /* It is valid only for the system type powerpc-apple-darwin9.8.0 */ 3 4 #ifndef __BYTEORDER_H 5 #define __BYTEORDER_H 6 7 /* ntohl and relatives live here */ 8 #include <arpa/inet.h> 9 10 /* Define generic byte swapping functions */ 11 #include <machine/byte_order.h> 12 #define swap16(x) NXSwapShort(x) 13 #define swap32(x) NXSwapLong(x) 14 #define swap64(x) NXSwapLongLong(x) 15 16 /* The byte swapping macros have the form: */ 17 /* EENN[a]toh or htoEENN[a] where EE is be (big endian) or */ 18 /* le (little-endian), NN is 16 or 32 (number of bits) and a, */ 19 /* if present, indicates that the endian side is a pointer to an */ 20 /* array of uint8_t bytes instead of an integer of the specified length. */ 21 /* h refers to the host's ordering method. */ 22 23 /* So, to convert a 32-bit integer stored in a buffer in little-endian */ 24 /* format into a uint32_t usable on this machine, you could use: */ 25 /* uint32_t value = le32atoh(&buf[3]); */ 26 /* To put that value back into the buffer, you could use: */ 27 /* htole32a(&buf[3], value); */ 28 29 /* Define aliases for the standard byte swapping macros */ 30 /* Arguments to these macros must be properly aligned on natural word */ 31 /* boundaries in order to work properly on all architectures */ 32 #ifndef htobe16 33 # define htobe16(x) htons(x) 34 #endif 35 #ifndef htobe32 36 # define htobe32(x) htonl(x) 37 #endif 38 #ifndef be16toh 39 # define be16toh(x) ntohs(x) 40 #endif 41 #ifndef be32toh 42 # define be32toh(x) ntohl(x) 43 #endif 44 45 #define HTOBE16(x) (x) = htobe16(x) 46 #define HTOBE32(x) (x) = htobe32(x) 47 #define BE32TOH(x) (x) = be32toh(x) 48 #define BE16TOH(x) (x) = be16toh(x) 49 50 /* Define our own extended byte swapping macros for big-endian machines */ 51 #ifndef htole16 52 # define htole16(x) swap16(x) 53 #endif 54 #ifndef htole32 55 # define htole32(x) swap32(x) 56 #endif 57 #ifndef le16toh 58 # define le16toh(x) swap16(x) 59 #endif 60 #ifndef le32toh 61 # define le32toh(x) swap32(x) 62 #endif 63 #ifndef le64toh 64 # define le64toh(x) swap64(x) 65 #endif 66 67 #ifndef htobe64 68 # define htobe64(x) (x) 69 #endif 70 #ifndef be64toh 71 # define be64toh(x) (x) 72 #endif 73 74 #define HTOLE16(x) (x) = htole16(x) 75 #define HTOLE32(x) (x) = htole32(x) 76 #define LE16TOH(x) (x) = le16toh(x) 77 #define LE32TOH(x) (x) = le32toh(x) 78 #define LE64TOH(x) (x) = le64toh(x) 79 80 #define HTOBE64(x) (void) (x) 81 #define BE64TOH(x) (void) (x) 82 83 /* Define the C99 standard length-specific integer types */ 84 #include <stdint.h> 85 86 /* Here are some macros to create integers from a byte array */ 87 /* These are used to get and put integers from/into a uint8_t array */ 88 /* with a specific endianness. This is the most portable way to generate */ 89 /* and read messages to a network or serial device. Each member of a */ 90 /* packet structure must be handled separately. */ 91 92 /* Non-optimized but portable macros */ 93 #define be16atoh(x) ((uint16_t)(((x)[0]<<8)|(x)[1])) 94 #define be32atoh(x) ((uint32_t)(((x)[0]<<24)|((x)[1]<<16)|((x)[2]<<8)|(x)[3])) 95 #define be64atoh_x(x,off,shift) (((uint64_t)((x)[off]))<<shift) 96 #define be64atoh(x) ((uint64_t)(be64atoh_x(x,0,56)|be64atoh_x(x,1,48)|be64atoh_x(x,2,40)| \ 97 be64atoh_x(x,3,32)|be64atoh_x(x,4,24)|be64atoh_x(x,5,16)|be64atoh_x(x,6,8)|((x)[7]))) 98 #define le16atoh(x) ((uint16_t)(((x)[1]<<8)|(x)[0])) 99 #define le32atoh(x) ((uint32_t)(((x)[3]<<24)|((x)[2]<<16)|((x)[1]<<8)|(x)[0])) 100 #define le64atoh_x(x,off,shift) (((uint64_t)(x)[off])<<shift) 101 #define le64atoh(x) ((uint64_t)(le64atoh_x(x,7,56)|le64atoh_x(x,6,48)|le64atoh_x(x,5,40)| \ 102 le64atoh_x(x,4,32)|le64atoh_x(x,3,24)|le64atoh_x(x,2,16)|le64atoh_x(x,1,8)|((x)[0]))) 103 104 #define htobe16a(a,x) (a)[0]=(uint8_t)((x)>>8), (a)[1]=(uint8_t)(x) 105 #define htobe32a(a,x) (a)[0]=(uint8_t)((x)>>24), (a)[1]=(uint8_t)((x)>>16), \ 106 (a)[2]=(uint8_t)((x)>>8), (a)[3]=(uint8_t)(x) 107 #define htobe64a(a,x) (a)[0]=(uint8_t)((x)>>56), (a)[1]=(uint8_t)((x)>>48), \ 108 (a)[2]=(uint8_t)((x)>>40), (a)[3]=(uint8_t)((x)>>32), \ 109 (a)[4]=(uint8_t)((x)>>24), (a)[5]=(uint8_t)((x)>>16), \ 110 (a)[6]=(uint8_t)((x)>>8), (a)[7]=(uint8_t)(x) 111 #define htole16a(a,x) (a)[1]=(uint8_t)((x)>>8), (a)[0]=(uint8_t)(x) 112 #define htole32a(a,x) (a)[3]=(uint8_t)((x)>>24), (a)[2]=(uint8_t)((x)>>16), \ 113 (a)[1]=(uint8_t)((x)>>8), (a)[0]=(uint8_t)(x) 114 #define htole64a(a,x) (a)[7]=(uint8_t)((x)>>56), (a)[6]=(uint8_t)((x)>>48), \ 115 (a)[5]=(uint8_t)((x)>>40), (a)[4]=(uint8_t)((x)>>32), \ 116 (a)[3]=(uint8_t)((x)>>24), (a)[2]=(uint8_t)((x)>>16), \ 117 (a)[1]=(uint8_t)((x)>>8), (a)[0]=(uint8_t)(x) 118 119 #endif /*__BYTEORDER_H*/ 120
