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Diffstat (limited to 'thunk.h')
-rw-r--r--thunk.h40
1 files changed, 39 insertions, 1 deletions
diff --git a/thunk.h b/thunk.h
index 932bbcf0d..0b83d202a 100644
--- a/thunk.h
+++ b/thunk.h
@@ -2,14 +2,52 @@
#define THUNK_H
#include <inttypes.h>
+#include <endian.h>
+
+#ifdef HAVE_BYTESWAP_H
#include <byteswap.h>
+#else
+
+#define bswap_16(x) \
+({ \
+ uint16_t __x = (x); \
+ ((uint16_t)( \
+ (((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \
+ (((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \
+})
+
+#define bswap_32(x) \
+({ \
+ uint32_t __x = (x); \
+ ((uint32_t)( \
+ (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
+ (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
+ (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
+ (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
+})
+
+#define bswap_64(x) \
+({ \
+ __u64 __x = (x); \
+ ((__u64)( \
+ (__u64)(((__u64)(__x) & (__u64)0x00000000000000ffULL) << 56) | \
+ (__u64)(((__u64)(__x) & (__u64)0x000000000000ff00ULL) << 40) | \
+ (__u64)(((__u64)(__x) & (__u64)0x0000000000ff0000ULL) << 24) | \
+ (__u64)(((__u64)(__x) & (__u64)0x00000000ff000000ULL) << 8) | \
+ (__u64)(((__u64)(__x) & (__u64)0x000000ff00000000ULL) >> 8) | \
+ (__u64)(((__u64)(__x) & (__u64)0x0000ff0000000000ULL) >> 24) | \
+ (__u64)(((__u64)(__x) & (__u64)0x00ff000000000000ULL) >> 40) | \
+ (__u64)(((__u64)(__x) & (__u64)0xff00000000000000ULL) >> 56) )); \
+})
+
+#endif
#undef WORDS_BIGENDIAN
#if __BYTE_ORDER == __BIG_ENDIAN
#define WORDS_BIGENDIAN
#endif
-#ifdef WORD_BIGENDIAN
+#ifdef WORDS_BIGENDIAN
#define BSWAP_NEEDED
#endif