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1da177e4 LT |
1 | /* |
2 | * include/asm-s390/ebcdic.h | |
3 | * EBCDIC -> ASCII, ASCII -> EBCDIC conversion routines. | |
4 | * | |
5 | * S390 version | |
6 | * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation | |
7 | * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> | |
8 | */ | |
9 | ||
10 | #ifndef _EBCDIC_H | |
11 | #define _EBCDIC_H | |
12 | ||
13 | #ifndef _S390_TYPES_H | |
14 | #include <types.h> | |
15 | #endif | |
16 | ||
17 | extern __u8 _ascebc_500[]; /* ASCII -> EBCDIC 500 conversion table */ | |
18 | extern __u8 _ebcasc_500[]; /* EBCDIC 500 -> ASCII conversion table */ | |
19 | extern __u8 _ascebc[]; /* ASCII -> EBCDIC conversion table */ | |
20 | extern __u8 _ebcasc[]; /* EBCDIC -> ASCII conversion table */ | |
21 | extern __u8 _ebc_tolower[]; /* EBCDIC -> lowercase */ | |
22 | extern __u8 _ebc_toupper[]; /* EBCDIC -> uppercase */ | |
23 | ||
4448aaf0 | 24 | static inline void |
1da177e4 LT |
25 | codepage_convert(const __u8 *codepage, volatile __u8 * addr, unsigned long nr) |
26 | { | |
27 | if (nr-- <= 0) | |
28 | return; | |
29 | __asm__ __volatile__( | |
30 | " bras 1,1f\n" | |
31 | " tr 0(1,%0),0(%2)\n" | |
32 | "0: tr 0(256,%0),0(%2)\n" | |
33 | " la %0,256(%0)\n" | |
34 | "1: ahi %1,-256\n" | |
35 | " jnm 0b\n" | |
36 | " ex %1,0(1)" | |
37 | : "+&a" (addr), "+&a" (nr) | |
38 | : "a" (codepage) : "cc", "memory", "1" ); | |
39 | } | |
40 | ||
41 | #define ASCEBC(addr,nr) codepage_convert(_ascebc, addr, nr) | |
42 | #define EBCASC(addr,nr) codepage_convert(_ebcasc, addr, nr) | |
43 | #define ASCEBC_500(addr,nr) codepage_convert(_ascebc_500, addr, nr) | |
44 | #define EBCASC_500(addr,nr) codepage_convert(_ebcasc_500, addr, nr) | |
45 | #define EBC_TOLOWER(addr,nr) codepage_convert(_ebc_tolower, addr, nr) | |
46 | #define EBC_TOUPPER(addr,nr) codepage_convert(_ebc_toupper, addr, nr) | |
47 | ||
48 | #endif | |
49 |