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/
usr
/
src
/
linux-headers-6.8.0-83-generic
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arch
/
s390
/
include
/
asm
/ [
drwxr-xr-x
]
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ebcdic.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * 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 #include <linux/types.h> 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 char *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
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