From b632f8129faac6d881e3c67198047d2b3c284cea Mon Sep 17 00:00:00 2001
From: Matthew Endsley <mendsley@gmail.com>
Date: Fri, 11 Jul 2014 23:41:47 +0000
Subject: [PATCH] Add support for the Xbox360 platform (PPC+msvc)
This includes generic big endian support for msvc by mapping the
Microsoft byte swap instrinsics _bytes_swap_* to the gcc counterpart
names.
---
include/flatbuffers/flatbuffers.h | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/include/flatbuffers/flatbuffers.h b/include/flatbuffers/flatbuffers.h
index d05dffb8..d2ab04c8 100644
--- a/include/flatbuffers/flatbuffers.h
+++ b/include/flatbuffers/flatbuffers.h
@@ -44,13 +44,17 @@
#define FLATBUFFERS_LITTLEENDIAN 1
#endif // __BIG_ENDIAN__
#elif defined(_MSC_VER)
- #define FLATBUFFERS_LITTLEENDIAN 1
+ #if defined(_M_PPC)
+ #define FLATBUFFERS_LITTLEENDIAN 0
+ #else
+ #define FLATBUFFERS_LITTLEENDIAN 1
+ #endif
#else
#error Unable to determine endianness, define FLATBUFFERS_LITTLEENDIAN.
#endif
#endif // !defined(FLATBUFFERS_LITTLEENDIAN)
-#ifndef WIN32
+#if !defined(_MSC_VER)
#define FLATBUFFERS_WEAK __attribute__((weak))
#else
#define FLATBUFFERS_WEAK __declspec(selectany)
@@ -97,6 +101,14 @@ template<typename T> T EndianScalar(T t) {
#if FLATBUFFERS_LITTLEENDIAN
return t;
#else
+ #if defined(_MSC_VER)
+ #pragma push_macro("__builtin_bswap16")
+ #pragma push_macro("__builtin_bswap32")
+ #pragma push_macro("__builtin_bswap64")
+ #define __builtin_bswap16 _byteswap_ushort
+ #define __builtin_bswap32 _byteswap_ulong
+ #define __builtin_bswap64 _byteswap_uint64
+ #endif
// If you're on the few remaining big endian platforms, we make the bold
// assumption you're also on gcc/clang, and thus have bswap intrinsics:
if (sizeof(T) == 1) { // Compile-time if-then's.
@@ -113,6 +125,11 @@ template<typename T> T EndianScalar(T t) {
} else {
assert(0);
}
+ #if defined(_MSC_VER)
+ #pragma pop_macro("__builtin_bswap16")
+ #pragma pop_macro("__builtin_bswap32")
+ #pragma pop_macro("__builtin_bswap64")
+ #endif
#endif
}
--
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