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/*

 *  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