Import of Linux/MIPS 1.3.0

1 files changed, 85 insertions, 0 deletions

diff --git a/include/asm-sparc/byteorder.h b/include/asm-sparc/byteorder.h
new file mode 100644
index 000000000..b734cf8a6
--- /dev/null
+++ b/include/asm-sparc/byteorder.h
@@ -0,0 +1,85 @@
+#ifndef _SPARC_BYTEORDER_H
+#define _SPARC_BYTEORDER_H
+
+#undef ntohl
+#undef ntohs
+#undef htonl
+#undef htons
+
+#define BIG_ENDIAN
+#define BIG_ENDIAN_BITFIELD
+
+extern unsigned long int	ntohl(unsigned long int);
+extern unsigned short int	ntohs(unsigned short int);
+extern unsigned long int	htonl(unsigned long int);
+extern unsigned short int	htons(unsigned short int);
+
+extern unsigned long int	__ntohl(unsigned long int);
+extern unsigned short int	__ntohs(unsigned short int);
+extern unsigned long int	__constant_ntohl(unsigned long int);
+extern unsigned short int	__constant_ntohs(unsigned short int);
+
+/*
+ * The constant and non-constant versions here are the same.
+ * Maybe I'll come up with an alpha-optimized routine for the
+ * non-constant ones (the constant ones don't need it: gcc
+ * will optimize it to the correct constant)
+ */
+
+extern __inline__ unsigned long int
+__ntohl(unsigned long int x)
+{
+	return (((x & 0x000000ffU) << 24) |
+		((x & 0x0000ff00U) <<  8) |
+		((x & 0x00ff0000U) >>  8) |
+		((x & 0xff000000U) >> 24));
+}
+
+extern __inline__ unsigned long int
+__constant_ntohl(unsigned long int x)
+{
+	return (((x & 0x000000ffU) << 24) |
+		((x & 0x0000ff00U) <<  8) |
+		((x & 0x00ff0000U) >>  8) |
+		((x & 0xff000000U) >> 24));
+}
+
+extern __inline__ unsigned short int
+__ntohs(unsigned short int x)
+{
+	return (((x & 0x00ff) << 8) |
+		((x & 0xff00) >> 8));
+}
+
+extern __inline__ unsigned short int
+__constant_ntohs(unsigned short int x)
+{
+	return (((x & 0x00ff) << 8) |
+		((x & 0xff00) >> 8));
+}
+
+#define __htonl(x) __ntohl(x)
+#define __htons(x) __ntohs(x)
+#define __constant_htonl(x) __constant_ntohl(x)
+#define __constant_htons(x) __constant_ntohs(x)
+
+#ifdef  __OPTIMIZE__
+#  define ntohl(x) \
+(__builtin_constant_p((long)(x)) ? \
+ __constant_ntohl((x)) : \
+ __ntohl((x)))
+#  define ntohs(x) \
+(__builtin_constant_p((short)(x)) ? \
+ __constant_ntohs((x)) : \
+ __ntohs((x)))
+#  define htonl(x) \
+(__builtin_constant_p((long)(x)) ? \
+ __constant_htonl((x)) : \
+ __htonl((x)))
+#  define htons(x) \
+(__builtin_constant_p((short)(x)) ? \
+ __constant_htons((x)) : \
+ __htons((x)))
+#endif
+
+#endif /* !(_SPARC_BYTEORDER_H) */