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Commit f86ea02d authored by Elliott Hughes's avatar Elliott Hughes
Browse files

Use as much of the macOS endian support as we can. 

Turns out that although there's no <endian.h> or <sys/endian.h>, there
are <machine/endian.h> and <sys/_endian.h>, and they're included by
other system headers such as <dirent.h>.

Reuse the contents of <sys/_endian.h> here for better interop.

Bug: http://b/139203733
Test: treehugger
Change-Id: Ic0e9bfa1a5b56d05e9e542839d237b6ceae4aa8c
parent 5af75ed1

base/include/android-base/endian.h

+15 −10
Original line number Diff line number Diff line
@@ -41,23 +41,28 @@ 


#else



/* Mac OS and Windows have nothing. */



#define __LITTLE_ENDIAN 1234

#if defined(__APPLE__)

/* macOS has some of the basics. */

#include <sys/_endian.h>

#else

/* Windows really has nothing. */

#define LITTLE_ENDIAN __LITTLE_ENDIAN



#define __BIG_ENDIAN 4321

#define BIG_ENDIAN __BIG_ENDIAN



#define __BYTE_ORDER __LITTLE_ENDIAN

#define BYTE_ORDER __BYTE_ORDER



#define htons(x) __builtin_bswap16(x)

#define htonl(x) __builtin_bswap32(x)

#define htonq(x) __builtin_bswap64(x)



#define ntohs(x) __builtin_bswap16(x)

#define ntohl(x) __builtin_bswap32(x)

#endif



/* Neither macOS nor Windows have the rest. */



#define __LITTLE_ENDIAN 1234

#define __BIG_ENDIAN 4321

#define __BYTE_ORDER __LITTLE_ENDIAN



#define htonq(x) __builtin_bswap64(x)



#define ntohq(x) __builtin_bswap64(x)



#define htobe16(x) __builtin_bswap16(x)