| 368 | #endif |
| 369 | |
| 370 | template<typename T> T EndianSwap(T t) { |
| 371 | #if defined(_MSC_VER) |
| 372 | #define FLATBUFFERS_BYTESWAP16 _byteswap_ushort |
| 373 | #define FLATBUFFERS_BYTESWAP32 _byteswap_ulong |
| 374 | #define FLATBUFFERS_BYTESWAP64 _byteswap_uint64 |
| 375 | #elif defined(__ICCARM__) |
| 376 | #define FLATBUFFERS_BYTESWAP16 __REV16 |
| 377 | #define FLATBUFFERS_BYTESWAP32 __REV |
| 378 | #define FLATBUFFERS_BYTESWAP64(x) \ |
| 379 | ((__REV(static_cast<uint32_t>(x >> 32U))) | (static_cast<uint64_t>(__REV(static_cast<uint32_t>(x)))) << 32U) |
| 380 | #else |
| 381 | #if defined(__GNUC__) && __GNUC__ * 100 + __GNUC_MINOR__ < 408 && !defined(__clang__) |
| 382 | // __builtin_bswap16 was missing prior to GCC 4.8. |
| 383 | #define FLATBUFFERS_BYTESWAP16(x) \ |
| 384 | static_cast<uint16_t>(__builtin_bswap32(static_cast<uint32_t>(x) << 16)) |
| 385 | #else |
| 386 | #define FLATBUFFERS_BYTESWAP16 __builtin_bswap16 |
| 387 | #endif |
| 388 | #define FLATBUFFERS_BYTESWAP32 __builtin_bswap32 |
| 389 | #define FLATBUFFERS_BYTESWAP64 __builtin_bswap64 |
| 390 | #endif |
| 391 | if (sizeof(T) == 1) { // Compile-time if-then's. |
| 392 | return t; |
| 393 | } else if (sizeof(T) == 2) { |
| 394 | union { T t; uint16_t i; } u = { t }; |
| 395 | u.i = FLATBUFFERS_BYTESWAP16(u.i); |
| 396 | return u.t; |
| 397 | } else if (sizeof(T) == 4) { |
| 398 | union { T t; uint32_t i; } u = { t }; |
| 399 | u.i = FLATBUFFERS_BYTESWAP32(u.i); |
| 400 | return u.t; |
| 401 | } else if (sizeof(T) == 8) { |
| 402 | union { T t; uint64_t i; } u = { t }; |
| 403 | u.i = FLATBUFFERS_BYTESWAP64(u.i); |
| 404 | return u.t; |
| 405 | } else { |
| 406 | FLATBUFFERS_ASSERT(0); |
| 407 | return t; |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | #if defined(_MSC_VER) |
| 412 | #pragma warning(pop) |