| /* |
| * EBCDIC -> ASCII, ASCII -> EBCDIC conversion routines. |
| * |
| * S390 version |
| * Copyright IBM Corp. 1999 |
| * 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[256]; /* ASCII -> EBCDIC 500 conversion table */ |
| extern __u8 _ebcasc_500[256]; /* EBCDIC 500 -> ASCII conversion table */ |
| extern __u8 _ascebc[256]; /* ASCII -> EBCDIC conversion table */ |
| extern __u8 _ebcasc[256]; /* EBCDIC -> ASCII conversion table */ |
| extern __u8 _ebc_tolower[256]; /* EBCDIC -> lowercase */ |
| extern __u8 _ebc_toupper[256]; /* EBCDIC -> uppercase */ |
| |
| static 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 |
| |
