Patch from Miles Bader <miles@lsi.nec.co.jp> to support the v850.

He sent this patch to me a month ago, but I forgot to apply it...

1 files changed, 59 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/v850/bits/byteswap.h b/libc/sysdeps/linux/v850/bits/byteswap.h
new file mode 100644
index 000000000..b5b07209f
--- /dev/null
+++ b/libc/sysdeps/linux/v850/bits/byteswap.h
@@ -0,0 +1,59 @@
+/*
+ * libc/sysdeps/linux/v850/bits/byteswap.h -- Macros to swap the order
+ * 	of bytes in integer values
+ *
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *  Copyright (C) 1997,1998,2001  Free Software Foundation, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ */
+
+#if !defined _BYTESWAP_H && !defined _NETINET_IN_H
+# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
+#endif
+
+/* Swap bytes in 16 bit value.  */
+#ifdef __GNUC__
+# define __bswap_16(x)							      \
+    (__extension__							      \
+     ({ unsigned short int __bsh_val = (x);				      \
+        __asm__ ("bsh %1, %0" : "=r" (__bsh_val)  : "r" (__bsh_val));	      \
+	__bsh_val; }))
+#else
+static __inline unsigned short int
+__bswap_16 (unsigned short int __bsx)
+{
+  return ((((__bsx) >> 8) & 0xff) | (((__bsx) & 0xff) << 8));
+}
+#endif
+
+/* Swap bytes in 32 bit value.  */
+#ifdef __GNUC__
+# define __bswap_32(x)							      \
+    (__extension__							      \
+     ({ unsigned short int __bsw_val = (x);				      \
+        __asm__ ("bsw %1, %0" : "=r" (__bsw_val)  : "r" (__bsw_val));	      \
+	__bsw_val; }))
+#else
+static __inline unsigned int
+__bswap_32 (unsigned int __bsx)
+{
+  return ((((__bsx) & 0xff000000) >> 24) | (((__bsx) & 0x00ff0000) >>  8) |
+	  (((__bsx) & 0x0000ff00) <<  8) | (((__bsx) & 0x000000ff) << 24));
+}
+#endif
+
+#if defined __GNUC__ && __GNUC__ >= 2
+/* Swap bytes in 64 bit value.  */
+# define __bswap_64(x) \
+     (__extension__							      \
+      ({ union { unsigned long long int __ll;				      \
+		 unsigned long int __l[2]; } __v, __r;			      \
+	 __v.__ll = (x);						      \
+	 __r.__l[0] = __bswap_32 (__v.__l[1]);				      \
+	 __r.__l[1] = __bswap_32 (__v.__l[0]);				      \
+	 __r.__ll; }))
+#endif