1/*
2 * Copyright (c) 2004 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

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52#else
53#include <machine/endian.h>
54#endif
55
56#if defined(__APPLE__)
57#include <libkern/OSByteOrder.h>
58#endif
59
60//These functions actually perform the swapping for parameters
61//of various bit lengths
62static inline uint64_t
63swap_byte64(uint64_t x)
64{
65#if defined(linux)
66 return bswap_64(x);
67#elif defined(__APPLE__)

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126//The conversion functions with fixed endianness on both ends don't need to
127//be in a namespace
128template <typename T> static inline T betole(T value) {return swap_byte(value);}
129template <typename T> static inline T letobe(T value) {return swap_byte(value);}
130
131//For conversions not involving the guest system, we can define the functions
132//conditionally based on the BYTE_ORDER macro and outside of the namespaces
133#if defined(_BIG_ENDIAN) || BYTE_ORDER == BIG_ENDIAN
134template <typename T> static inline T htole(T value) {return swap_byte(value);}
135template <typename T> static inline T letoh(T value) {return swap_byte(value);}
136template <typename T> static inline T htobe(T value) {return value;}
137template <typename T> static inline T betoh(T value) {return value;}
138#elif defined(_LITTLE_ENDIAN) || BYTE_ORDER == LITTLE_ENDIAN
139template <typename T> static inline T htole(T value) {return value;}
140template <typename T> static inline T letoh(T value) {return value;}
141template <typename T> static inline T htobe(T value) {return swap_byte(value);}
142template <typename T> static inline T betoh(T value) {return swap_byte(value);}
143#else
144 #error Invalid Endianess
145#endif
146
147namespace BigEndianGuest
148{
149 template <typename T>
150 static inline T gtole(T value) {return betole(value);}
151 template <typename T>
152 static inline T letog(T value) {return letobe(value);}
153 template <typename T>
154 static inline T gtobe(T value) {return value;}
155 template <typename T>
156 static inline T betog(T value) {return value;}
157 template <typename T>
158 static inline T htog(T value) {return htobe(value);}
159 template <typename T>
160 static inline T gtoh(T value) {return betoh(value);}
161}
162
163namespace LittleEndianGuest
164{
165 template <typename T>
166 static inline T gtole(T value) {return value;}
167 template <typename T>
168 static inline T letog(T value) {return value;}
169 template <typename T>
170 static inline T gtobe(T value) {return letobe(value);}
171 template <typename T>
172 static inline T betog(T value) {return betole(value);}
173 template <typename T>
174 static inline T htog(T value) {return htole(value);}
175 template <typename T>
176 static inline T gtoh(T value) {return letoh(value);}
177}
178#endif // __SIM_BYTE_SWAP_HH__