From 4690dab084f854bf0013b5eaabcf90c2d5b692ff Mon Sep 17 00:00:00 2001 From: Stefan Liebler Date: Wed, 25 May 2016 17:18:04 +0200 Subject: S390: Optimize 8bit-generic iconv modules. This patch introduces a s390 specific 8bit-generic.c file which provides an optimized version for z13 with translate-/vector-instructions, which will be chosen at runtime via ifunc. If the build-environment lacks vector support, then iconvdata/8bit-generic.c is used wihtout any change. Otherwise iconvdata/8bit-generic.c is used to create conversion loop routines without vector instructions as fallback, if vector instructions aren't available at runtime. The vector routines can only be used with charsets where the maximum UCS4 value fits in 1 byte size. Then the hardware translate-instruction is used to translate between up to 256 generic characters and "1 byte UCS4" characters at once. The vector instructions are used to convert between the "1 byte UCS4" and UCS4. The gen-8bit.sh script in sysdeps/s390/multiarch generates the conversion table to_ucs1. Therefore in sysdeps/s390/multiarch/Makefile is added an override define generate-8bit-table, which is originally defined in iconvdata/Makefile. This version calls the gen-8bit.sh in iconvdata folder and the s390 one. ChangeLog: * sysdeps/s390/multiarch/8bit-generic.c: New File. * sysdeps/s390/multiarch/gen-8bit.sh: New File. * sysdeps/s390/multiarch/Makefile (generate-8bit-table): New override define. * sysdeps/s390/multiarch/iconv/skeleton.c: Likewise. --- sysdeps/s390/multiarch/iconv/skeleton.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 sysdeps/s390/multiarch/iconv/skeleton.c (limited to 'sysdeps/s390/multiarch/iconv') diff --git a/sysdeps/s390/multiarch/iconv/skeleton.c b/sysdeps/s390/multiarch/iconv/skeleton.c new file mode 100644 index 0000000000..3a9003108f --- /dev/null +++ b/sysdeps/s390/multiarch/iconv/skeleton.c @@ -0,0 +1,21 @@ +/* Skeleton for a conversion module - S390 version. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef IGNORE_ICONV_SKELETON +# include_next +#endif -- cgit 1.4.1