| 1 | /** @File
|
|---|
| 2 | Routines for translating between host and network byte-order.
|
|---|
| 3 |
|
|---|
| 4 | Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
|
|---|
| 5 | This program and the accompanying materials are licensed and made available
|
|---|
| 6 | under the terms and conditions of the BSD License that accompanies this
|
|---|
| 7 | distribution. The full text of the license may be found at
|
|---|
| 8 | http://opensource.org/licenses/bsd-license.
|
|---|
| 9 |
|
|---|
| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|---|
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|---|
| 12 |
|
|---|
| 13 | **/
|
|---|
| 14 | #include <Library/BaseLib.h>
|
|---|
| 15 | #include <LibConfig.h>
|
|---|
| 16 | #include <sys/endian.h>
|
|---|
| 17 |
|
|---|
| 18 | // Undefine macro versions of the functions to be defined below.
|
|---|
| 19 | #undef htonl
|
|---|
| 20 | #undef htons
|
|---|
| 21 | #undef ntohl
|
|---|
| 22 | #undef ntohs
|
|---|
| 23 |
|
|---|
| 24 | /** 32-bit Host to Network byte order conversion.
|
|---|
| 25 |
|
|---|
| 26 | @param[in] Datum The 32-bit value to be converted.
|
|---|
| 27 | @return Datum, converted to network byte order.
|
|---|
| 28 | **/
|
|---|
| 29 | uint32_t
|
|---|
| 30 | htonl(
|
|---|
| 31 | IN uint32_t Datum
|
|---|
| 32 | )
|
|---|
| 33 | {
|
|---|
| 34 | #if BYTE_ORDER == LITTLE_ENDIAN
|
|---|
| 35 | return SwapBytes32(Datum);
|
|---|
| 36 | #else
|
|---|
| 37 | return Datum;
|
|---|
| 38 | #endif
|
|---|
| 39 | }
|
|---|
| 40 |
|
|---|
| 41 | /** 16-bit Host to Network byte order conversion.
|
|---|
| 42 |
|
|---|
| 43 | @param[in] Datum The 16-bit value to be converted.
|
|---|
| 44 | @return Datum, converted to network byte order.
|
|---|
| 45 | **/
|
|---|
| 46 | uint16_t
|
|---|
| 47 | htons(
|
|---|
| 48 | IN uint16_t Datum
|
|---|
| 49 | )
|
|---|
| 50 | {
|
|---|
| 51 | #if BYTE_ORDER == LITTLE_ENDIAN
|
|---|
| 52 | return SwapBytes16(Datum);
|
|---|
| 53 | #else
|
|---|
| 54 | return Datum;
|
|---|
| 55 | #endif
|
|---|
| 56 | }
|
|---|
| 57 |
|
|---|
| 58 | /** 32-bit Network to Host byte order conversion.
|
|---|
| 59 |
|
|---|
| 60 | @param[in] Datum The 16-bit value to be converted.
|
|---|
| 61 | @return Datum, converted to host byte order.
|
|---|
| 62 | **/
|
|---|
| 63 | uint32_t
|
|---|
| 64 | ntohl(
|
|---|
| 65 | IN uint32_t Datum
|
|---|
| 66 | )
|
|---|
| 67 | {
|
|---|
| 68 | #if BYTE_ORDER == LITTLE_ENDIAN
|
|---|
| 69 | return SwapBytes32(Datum);
|
|---|
| 70 | #else
|
|---|
| 71 | return Datum;
|
|---|
| 72 | #endif
|
|---|
| 73 | }
|
|---|
| 74 |
|
|---|
| 75 | /** 16-bit Network to Host byte order conversion.
|
|---|
| 76 |
|
|---|
| 77 | @param[in] Datum The 16-bit value to be converted.
|
|---|
| 78 | @return Datum, converted to host byte order.
|
|---|
| 79 | **/
|
|---|
| 80 | uint16_t
|
|---|
| 81 | ntohs(
|
|---|
| 82 | IN uint16_t Datum
|
|---|
| 83 | )
|
|---|
| 84 | {
|
|---|
| 85 | #if BYTE_ORDER == LITTLE_ENDIAN
|
|---|
| 86 | return SwapBytes16(Datum);
|
|---|
| 87 | #else
|
|---|
| 88 | return Datum;
|
|---|
| 89 | #endif
|
|---|
| 90 | }
|
|---|
