svn commit: r184460 - head/sys/powerpc/include
Marcel Moolenaar
marcel at FreeBSD.org
Wed Oct 29 20:31:33 PDT 2008
Author: marcel
Date: Thu Oct 30 03:31:33 2008
New Revision: 184460
URL: http://svn.freebsd.org/changeset/base/184460
Log:
Add support for little-endian compilations to this file.
Modified:
head/sys/powerpc/include/endian.h
Modified: head/sys/powerpc/include/endian.h
==============================================================================
--- head/sys/powerpc/include/endian.h Thu Oct 30 01:54:31 2008 (r184459)
+++ head/sys/powerpc/include/endian.h Thu Oct 30 03:31:33 2008 (r184460)
@@ -44,15 +44,29 @@
#define _QUAD_LOWWORD 1
/*
+ * GCC defines _BIG_ENDIAN and _LITTLE_ENDIAN equal to __BIG_ENDIAN__
+ * and __LITTLE_ENDIAN__ (resp).
+ */
+#ifdef _BIG_ENDIAN
+#undef _BIG_ENDIAN
+#endif
+#ifdef _LITTLE_ENDIAN
+#undef _LITTLE_ENDIAN
+#endif
+
+/*
* Definitions for byte order, according to byte significance from low
* address to high.
*/
-#undef _BIG_ENDIAN /* GCC annoyingly defines this for PowerPC */
#define _LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
#define _BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
#define _PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
+#ifdef __LITTLE_ENDIAN__
+#define _BYTE_ORDER _LITTLE_ENDIAN
+#else
#define _BYTE_ORDER _BIG_ENDIAN
+#endif
/*
* Deprecated variants that don't have enough underscores to be useful in more
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