patch-2.3.99-pre8 linux/include/asm-s390/byteorder.h

• Lines: 104
• Date: Fri May 12 11:41:44 2000
• Orig file: v2.3.99-pre7/linux/include/asm-s390/byteorder.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.99-pre7/linux/include/asm-s390/byteorder.h linux/include/asm-s390/byteorder.h
@@ -0,0 +1,103 @@
+#ifndef _S390_BYTEORDER_H
+#define _S390_BYTEORDER_H
+
+/*
+ *  include/asm-s390/byteorder.h
+ *
+ *  S390 version
+ *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
+ */
+
+#include <asm/types.h>
+
+#ifdef __GNUC__
+
+static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
+{
+  __u32 temp;
+
+  __asm__ __volatile__ (
+          "        st    %0,0(%1)\n"
+          "        icm   %0,8,3(%1)\n"
+          "        icm   %0,4,2(%1)\n"
+          "        icm   %0,2,1(%1)\n"
+          "        ic    %0,0(%1)"
+          : "+&d" (x) : "a" (&temp) : "memory" );
+  return x;
+}
+
+static __inline__ __const__ __u32 ___arch__swab32p(__u32 *x)
+{
+  __u32 result;
+
+  __asm__ __volatile__ (
+          "        icm   %0,8,3(%1)\n"
+          "        icm   %0,4,2(%1)\n"
+          "        icm   %0,2,1(%1)\n"
+          "        ic    %0,0(%1)"
+          : "=&d" (result) : "a" (x) );
+  return result;
+}
+
+static __inline__ void ___arch__swab32s(__u32 *x)
+{
+  __asm__ __volatile__ (
+          "        icm   0,8,3(%0)\n"
+          "        icm   0,4,2(%0)\n"
+          "        icm   0,2,1(%0)\n"
+          "        ic    0,0(%0)\n"
+          "        st    0,0(%0)"
+          : : "a" (x) : "0", "memory");
+}
+
+static __inline__ __const__ __u16 ___arch__swab16(__u16 x)
+{
+  __u16 temp;
+
+  __asm__ __volatile__ (
+          "        sth   %0,0(%1)\n"
+          "        icm   %0,2,1(%1)\n"
+          "        ic    %0,0(%1)\n"
+          : "+&d" (x) : "a" (&temp) : "memory");
+  return x;
+}
+
+static __inline__ __const__ __u16 ___arch__swab16p(__u16 *x)
+{
+  __u16 result;
+
+  __asm__ __volatile__ (
+          "        sr    %0,%0\n"
+          "        icm   %0,2,1(%1)\n"
+          "        ic    %0,0(%1)\n"
+          : "=&d" (result) : "a" (x) );
+  return result;
+}
+
+static __inline__ void ___arch__swab16s(__u16 *x)
+{
+  __asm__ __volatile__(
+          "        icm   0,2,1(%0)\n"
+          "        ic    0,0(%0)\n"
+          "        sth   0,0(%0)"
+          : : "a" (x) : "0", "memory");
+}
+
+#define __arch__swab32(x) ___arch__swab32(x)
+#define __arch__swab16(x) ___arch__swab16(x)
+#define __arch__swab32p(x) ___arch__swab32p(x)
+#define __arch__swab16p(x) ___arch__swab16p(x)
+#define __arch__swab32s(x) ___arch__swab32s(x)
+#define __arch__swab16s(x) ___arch__swab16s(x)
+
+#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+#  define __BYTEORDER_HAS_U64__
+#  define __SWAB_64_THRU_32__
+#endif
+
+#endif /* __GNUC__ */
+
+#include <linux/byteorder/big_endian.h>
+
+#endif /* _S390_BYTEORDER_H */