1 files changed, 76 insertions, 0 deletions
diff --git a/libraries/classparser/src/javaendian.h b/libraries/classparser/src/javaendian.h
new file mode 100644
index 00000000..d488b382
--- /dev/null
+++ b/libraries/classparser/src/javaendian.h
@@ -0,0 +1,76 @@
+#pragma once
+#include <stdint.h>
+
+/**
+ * Swap bytes between big endian and local number representation
+ */
+namespace util
+{
+#ifdef MULTIMC_BIG_ENDIAN
+inline uint64_t bigswap(uint64_t x)
+{
+	return x;
+}
+;
+inline uint32_t bigswap(uint32_t x)
+{
+	return x;
+}
+;
+inline uint16_t bigswap(uint16_t x)
+{
+	return x;
+}
+;
+inline int64_t bigswap(int64_t x)
+{
+	return x;
+}
+;
+inline int32_t bigswap(int32_t x)
+{
+	return x;
+}
+;
+inline int16_t bigswap(int16_t x)
+{
+	return x;
+}
+;
+#else
+inline uint64_t bigswap(uint64_t x)
+{
+	return (x >> 56) | ((x << 40) & 0x00FF000000000000) | ((x << 24) & 0x0000FF0000000000) |
+		   ((x << 8) & 0x000000FF00000000) | ((x >> 8) & 0x00000000FF000000) |
+		   ((x >> 24) & 0x0000000000FF0000) | ((x >> 40) & 0x000000000000FF00) | (x << 56);
+}
+;
+inline uint32_t bigswap(uint32_t x)
+{
+	return (x >> 24) | ((x << 8) & 0x00FF0000) | ((x >> 8) & 0x0000FF00) | (x << 24);
+}
+;
+inline uint16_t bigswap(uint16_t x)
+{
+	return (x >> 8) | (x << 8);
+}
+;
+inline int64_t bigswap(int64_t x)
+{
+	return (x >> 56) | ((x << 40) & 0x00FF000000000000) | ((x << 24) & 0x0000FF0000000000) |
+		   ((x << 8) & 0x000000FF00000000) | ((x >> 8) & 0x00000000FF000000) |
+		   ((x >> 24) & 0x0000000000FF0000) | ((x >> 40) & 0x000000000000FF00) | (x << 56);
+}
+;
+inline int32_t bigswap(int32_t x)
+{
+	return (x >> 24) | ((x << 8) & 0x00FF0000) | ((x >> 8) & 0x0000FF00) | (x << 24);
+}
+;
+inline int16_t bigswap(int16_t x)
+{
+	return (x >> 8) | (x << 8);
+}
+;
+#endif
+}