1 files changed, 36 insertions, 0 deletions
diff --git a/src/arch/ia64/include/bits/byteswap.h b/src/arch/ia64/include/bits/byteswap.h
new file mode 100644
index 000000000..a8a115850
--- /dev/null
+++ b/src/arch/ia64/include/bits/byteswap.h
@@ -0,0 +1,36 @@
+#ifndef ETHERBOOT_BITS_BYTESWAP_H
+#define ETHERBOOT_BITS_BYTESWAP_H
+
+static inline uint64_t __ia64_bswap_64(uint64_t x)
+{
+	uint64_t result;
+	__asm__ volatile(
+		"mux1 %0=%1,@rev" : 
+		"=r" (result) 
+		: "r" (x));
+	return result;
+}
+
+#define __bswap_constant_16(x) \
+	((uint16_t)((((uint16_t)(x) & 0x00ff) << 8) | \
+		(((uint16_t)(x) & 0xff00) >> 8)))
+
+#define __bswap_constant_32(x) \
+	((uint32_t)((((uint32_t)(x) & 0x000000ffU) << 24) | \
+		(((uint32_t)(x) & 0x0000ff00U) <<  8) | \
+		(((uint32_t)(x) & 0x00ff0000U) >>  8) | \
+		(((uint32_t)(x) & 0xff000000U) >> 24)))
+
+#define __bswap_16(x) \
+	(__builtin_constant_p(x) ? \
+	__bswap_constant_16(x) : \
+	(__ia64_bswap_64(x) >> 48))
+
+
+#define __bswap_32(x) \
+	(__builtin_constant_p(x) ? \
+	__bswap_constant_32(x) : \
+	(__ia64_bswap_64(x) >> 32))
+
+
+#endif /* ETHERBOOT_BITS_BYTESWAP_H */