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Diffstat (limited to 'include/asm-s390x/ebcdic.h')
| -rw-r--r-- | include/asm-s390x/ebcdic.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/include/asm-s390x/ebcdic.h b/include/asm-s390x/ebcdic.h new file mode 100644 index 000000000..086a09eb8 --- /dev/null +++ b/include/asm-s390x/ebcdic.h @@ -0,0 +1,55 @@ +/* + * 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) +{ + static const __u16 tr_op[] = { 0xDC00, 0x1000,0x3000 }; + __asm__ __volatile__( + " lgr 1,%0\n" + " lgr 2,%1\n" + " lgr 3,%2\n" + " aghi 2,-256\n" + " jm 1f\n" + "0: tr 0(256,1),0(3)\n" + " aghi 1,256\n" + " aghi 2,-256\n" + " jp 0b\n" + "1: aghi 2,255\n" + " jm 2f\n" + " ex 2,%3\n" + "2:" + : /* no output */ + : "a" (addr), "d" (nr), "a" (codepage), "m" (tr_op[0]) + : "cc", "memory", "1", "2", "3" ); +} + +#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 + |