From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- arch/s390/include/asm/ebcdic.h | 47 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 arch/s390/include/asm/ebcdic.h (limited to 'arch/s390/include/asm/ebcdic.h') diff --git a/arch/s390/include/asm/ebcdic.h b/arch/s390/include/asm/ebcdic.h new file mode 100644 index 000000000..29441beb9 --- /dev/null +++ b/arch/s390/include/asm/ebcdic.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * EBCDIC -> ASCII, ASCII -> EBCDIC conversion routines. + * + * S390 version + * Copyright IBM Corp. 1999 + * Author(s): Martin Schwidefsky + */ + +#ifndef _EBCDIC_H +#define _EBCDIC_H + +#include + +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 + -- cgit v1.2.3