94c12cc7d1
Major cleanup of all s390 inline assemblies. They now have a common coding style. Quite a few have been shortened, mainly by using register asm variables. Use of the EX_TABLE macro helps as well. The atomic ops, bit ops and locking inlines new use the Q-constraint if a newer gcc is used. That results in slightly better code. Thanks to Christian Borntraeger for proof reading the changes. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/*
|
|
* 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[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
|
|
|