New endian-conversion macros (intended to replace cpuwrap.h).

src/xpdev/xpendian.h

+/* endian.h */
+
+/* Macros to convert integer "endianness" */
+
+/* $Id$ */
+
+/****************************************************************************
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+
+#ifndef _ENDIAN_H
+
+/************************/
+/* byte-swapping macros */
+/************************/
+#define BYTE_SWAP_SHORT(x)	((((short)(x)&0xff00)>>8) | (((short)(x)&0x00ff)<<8))
+#define BYTE_SWAP_LONG(x)	((((long)(x)&0xff000000)>>24) | (((long)(x)&0x00ff0000)>>8) | (((long)(x)&0x0000ff00)<<8) | (((long)(x) & 0x000000ff)<<24))
+
+/* auto-detect integer size */
+#define BYTE_SWAP_INT(x)	(sizeof(x)==sizeof(short) ? BYTE_SWAP_SHORT(x) : BYTE_SWAP_LONG(x))
+
+/********************************/
+/* Architecture-specific macros */
+/********************************/
+#ifdef __BIG_ENDIAN__	/* e.g. Motorola */
+
+	#define BE_SHORT(x)		(x)
+	#define BE_LONG(x)		(x)
+	#define BE_INT(x)		(x)
+	#define LE_SHORT(x)		BYTE_SWAP_SHORT(x)
+	#define LE_LONG(x)		BYTE_SWAP_LONG(x)
+	#define LE_INT(x)		BYTE_SWAP_INT(x)
+
+#else	/* Little Endian (e.g. Intel) */
+
+	#define LE_SHORT(x)		(x)
+	#define LE_LONG(x)		(x)
+	#define LE_INT(x)		(x)
+	#define BE_SHORT(x)		BYTE_SWAP_SHORT(x)
+	#define BE_LONG(x)		BYTE_SWAP_LONG(x)
+	#define BE_INT(x)		BYTE_SWAP_INT(x)
+
+#endif
+
+#endif	/* Don't add anything after this line */