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https://github.com/edk2-porting/linux-next.git
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a53c8fab3f
Remove the file name from the comment at top of many files. In most cases the file name was wrong anyway, so it's rather pointless. Also unify the IBM copyright statement. We did have a lot of sightly different statements and wanted to change them one after another whenever a file gets touched. However that never happened. Instead people start to take the old/"wrong" statements to use as a template for new files. So unify all of them in one go. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/*
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* EBCDIC -> ASCII, ASCII -> EBCDIC conversion routines.
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*
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* S390 version
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* Copyright IBM Corp. 1999
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* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef _EBCDIC_H
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#define _EBCDIC_H
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#ifndef _S390_TYPES_H
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#include <types.h>
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#endif
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extern __u8 _ascebc_500[256]; /* ASCII -> EBCDIC 500 conversion table */
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extern __u8 _ebcasc_500[256]; /* EBCDIC 500 -> ASCII conversion table */
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extern __u8 _ascebc[256]; /* ASCII -> EBCDIC conversion table */
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extern __u8 _ebcasc[256]; /* EBCDIC -> ASCII conversion table */
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extern __u8 _ebc_tolower[256]; /* EBCDIC -> lowercase */
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extern __u8 _ebc_toupper[256]; /* EBCDIC -> uppercase */
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static inline void
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codepage_convert(const __u8 *codepage, volatile __u8 * addr, unsigned long nr)
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{
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if (nr-- <= 0)
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return;
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asm volatile(
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" bras 1,1f\n"
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" tr 0(1,%0),0(%2)\n"
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"0: tr 0(256,%0),0(%2)\n"
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" la %0,256(%0)\n"
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"1: ahi %1,-256\n"
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" jnm 0b\n"
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" ex %1,0(1)"
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: "+&a" (addr), "+&a" (nr)
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: "a" (codepage) : "cc", "memory", "1");
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}
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#define ASCEBC(addr,nr) codepage_convert(_ascebc, addr, nr)
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#define EBCASC(addr,nr) codepage_convert(_ebcasc, addr, nr)
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#define ASCEBC_500(addr,nr) codepage_convert(_ascebc_500, addr, nr)
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#define EBCASC_500(addr,nr) codepage_convert(_ebcasc_500, addr, nr)
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#define EBC_TOLOWER(addr,nr) codepage_convert(_ebc_tolower, addr, nr)
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#define EBC_TOUPPER(addr,nr) codepage_convert(_ebc_toupper, addr, nr)
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#endif
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