1 files changed, 49 insertions, 0 deletions

diff --git a/include/asm-s390/ebcdic.h b/include/asm-s390/ebcdic.h
new file mode 100644
index 000000000000..20e81e885821
--- /dev/null
+++ b/include/asm-s390/ebcdic.h
@@ -0,0 +1,49 @@
+/*
+ *  include/asm-s390/ebcdic.h
+ *    EBCDIC -> ASCII, ASCII -> EBCDIC conversion routines.
+ *
+ *  S390 version
+ *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+
+#ifndef _EBCDIC_H
+#define _EBCDIC_H
+
+#ifndef _S390_TYPES_H
+#include <types.h>
+#endif
+
+extern __u8 _ascebc_500[];   /* ASCII -> EBCDIC 500 conversion table */
+extern __u8 _ebcasc_500[];   /* EBCDIC 500 -> ASCII conversion table */
+extern __u8 _ascebc[];   /* ASCII -> EBCDIC conversion table */
+extern __u8 _ebcasc[];   /* EBCDIC -> ASCII conversion table */
+extern __u8 _ebc_tolower[]; /* EBCDIC -> lowercase */
+extern __u8 _ebc_toupper[]; /* EBCDIC -> uppercase */
+
+extern __inline__ void
+codepage_convert(const __u8 *codepage, volatile __u8 * addr, unsigned long nr)
+{
+        if (nr-- <= 0)
+                return;
+        __asm__ __volatile__(
+                "   bras 1,1f\n"
+                "   tr   0(1,%0),0(%2)\n"
+                "0: tr   0(256,%0),0(%2)\n"
+                "   la   %0,256(%0)\n"
+                "1: ahi  %1,-256\n"
+                "   jnm  0b\n"
+                "   ex   %1,0(1)"
+                : "+&a" (addr), "+&a" (nr)
+                : "a" (codepage) : "cc", "memory", "1" );
+}
+
+#define ASCEBC(addr,nr) codepage_convert(_ascebc, addr, nr)
+#define EBCASC(addr,nr) codepage_convert(_ebcasc, addr, nr)
+#define ASCEBC_500(addr,nr) codepage_convert(_ascebc_500, addr, nr)
+#define EBCASC_500(addr,nr) codepage_convert(_ebcasc_500, addr, nr)
+#define EBC_TOLOWER(addr,nr) codepage_convert(_ebc_tolower, addr, nr)
+#define EBC_TOUPPER(addr,nr) codepage_convert(_ebc_toupper, addr, nr)
+
+#endif
+