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Re: [PATCH] S/390: HW accelerated iconv module for iso-8859-1/cp37conversions

From: Andreas Krebbel <krebbel at linux dot vnet dot ibm dot com>
To: Ulrich Drepper <drepper at redhat dot com>
Cc: libc-alpha at sourceware dot org
Date: Tue, 17 Mar 2009 18:33:09 +0100
Subject: Re: [PATCH] S/390: HW accelerated iconv module for iso-8859-1/cp37conversions
References: <20090223134953.GA1111@bart> <49ABE220.8010806@redhat.com>

Also, isn't ISO 8859-1 outdated?  Almost nobody in Europe can use it
because of the missing â sign.  You should rather support ISO 8859-15 etc.

Unfortunately this turned out to be impossible. The hardware instruction is not able to deal with unconvertable bytes. Once issued the instruction converts the input string using the provided conversion table without being able to throw an error. So it seems that this particular instruction can only be used for conversions between cp037 and iso-8859-1. There are also ebcdic variants supporting the euro sign but unfortunately these aren't able to deal with the other chars added with 8859-15 (0xa6, 0xa8, 0xb4, ...).

Bye,

-Andreas-


- --
â Ulrich Drepper â Red Hat, Inc. â 444 Castro St â Mountain View, CA â
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References:
- Re: [PATCH] S/390: HW accelerated iconv module for iso-8859-1/cp37conversions
  - From: Ulrich Drepper

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