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314 lines
10 KiB
314 lines
10 KiB
7 years ago
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From 9acd7055583a99e912d353ded6a3b4715ee2562a Mon Sep 17 00:00:00 2001
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From: Stefan Liebler <stli@linux.vnet.ibm.com>
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Date: Thu, 27 Jul 2017 10:53:58 +0200
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Subject: [PATCH 04/10] S390: Move utf16-utf32-z9.c to multiarch folder and use
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s390_libc_ifunc_expr macro.
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upstream-commit 85286aaf1dd7216a64964752d147c5ce3c4067d0
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The utf16-utf32-z9.c iconv module is using ifunc and thus the ifunc part should
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be in multiarch folder. Otherwise ifunc is used even if you configure
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with --disable-multi-arch.
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This patch moves the ifunc resolvers to the new file
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sysdeps/s390/multiarch/utf16-utf32-z9.c. The resolvers are now implemented
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with s390_libc_ifunc_expr macro instead of using gcc attribute ifunc directly.
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The ifunc versions are implemented in sysdeps/s390/utf16-utf32-z9.c.
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Each version is only implemented if needed or supported. Therefore there is
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a block at beginning of the file which selects the versions which should be
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defined depending on support for multiarch, vector-support and used minimum
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architecture level. This block defines HAVE_[FROM|TO]_[C|VX] to 1 or 0.
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The code below is rearranged and surrounded
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by #if HAVE_[FROM|TO]_[C|VX] == 1. There is no functional change.
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ChangeLog:
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* sysdeps/s390/multiarch/utf16-utf32-z9.c: New File.
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* sysdeps/s390/utf16-utf32-z9.c: Move ifunc resolvers to multiarch
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folder and define ifunc versions depending on HAVE_[FROM|TO]_[C|VX].
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(HAVE_FROM_C, HAVE_FROM_VX, HAVE_TO_C, HAVE_TO_VX, FROM_LOOP_DEFAULT,
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FROM_LOOP_C, FROM_LOOP_VX, TO_LOOP_DEFAULT, TO_LOOP_C, TO_LOOP_VX):
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New Define.
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---
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sysdeps/s390/multiarch/utf16-utf32-z9.c | 44 ++++++++++
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sysdeps/s390/utf16-utf32-z9.c | 142 ++++++++++++++++----------------
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2 files changed, 114 insertions(+), 72 deletions(-)
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create mode 100644 sysdeps/s390/multiarch/utf16-utf32-z9.c
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diff --git a/sysdeps/s390/multiarch/utf16-utf32-z9.c b/sysdeps/s390/multiarch/utf16-utf32-z9.c
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new file mode 100644
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index 0000000..6e64169
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--- /dev/null
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+++ b/sysdeps/s390/multiarch/utf16-utf32-z9.c
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@@ -0,0 +1,44 @@
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+/* Conversion between UTF-16 and UTF-32 BE/internal - multiarch s390 version.
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+
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+ Copyright (C) 2017 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <http://www.gnu.org/licenses/>. */
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+
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+#include <sysdeps/s390/utf16-utf32-z9.c>
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+#include <ifunc-resolve.h>
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+
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+#undef FROM_LOOP
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+#define FROM_LOOP __from_utf16_loop
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+#undef TO_LOOP
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+#define TO_LOOP __to_utf16_loop
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+
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+#define _SINGLE_NAME(NAME) NAME##_single
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+#define SINGLE_NAME(NAME) _SINGLE_NAME(NAME)
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+strong_alias (SINGLE_NAME (FROM_LOOP_DEFAULT), SINGLE_NAME (FROM_LOOP))
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+strong_alias (SINGLE_NAME (TO_LOOP_DEFAULT), SINGLE_NAME (TO_LOOP))
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+
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+/* Generate ifunc'ed loop functions for FROM/TO_LOOP. */
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+s390_libc_ifunc_expr (FROM_LOOP_DEFAULT, FROM_LOOP,
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+ (HAVE_FROM_VX && (hwcap & HWCAP_S390_VX))
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+ ? FROM_LOOP_VX
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+ : FROM_LOOP_DEFAULT);
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+
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+s390_libc_ifunc_expr (TO_LOOP_DEFAULT, TO_LOOP,
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+ (HAVE_TO_VX && (hwcap & HWCAP_S390_VX))
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+ ? TO_LOOP_VX
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+ : TO_LOOP_DEFAULT);
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+
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+#include <iconv/skeleton.c>
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diff --git a/sysdeps/s390/utf16-utf32-z9.c b/sysdeps/s390/utf16-utf32-z9.c
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index 5d2ac44..5a39d5d 100644
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--- a/sysdeps/s390/utf16-utf32-z9.c
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+++ b/sysdeps/s390/utf16-utf32-z9.c
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@@ -27,8 +27,23 @@
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#include <dlfcn.h>
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#include <stdint.h>
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#include <unistd.h>
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-#include <dl-procinfo.h>
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#include <gconv.h>
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+#include <string.h>
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+
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+/* Select which versions should be defined depending on support
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+ for multiarch, vector and used minimum architecture level. */
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+#define HAVE_FROM_C 1
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+#define FROM_LOOP_DEFAULT FROM_LOOP_C
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+#define HAVE_TO_C 1
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+#define TO_LOOP_DEFAULT TO_LOOP_C
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+
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+#if defined HAVE_S390_VX_ASM_SUPPORT && defined USE_MULTIARCH
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+# define HAVE_FROM_VX 1
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+# define HAVE_TO_VX 1
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+#else
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+# define HAVE_FROM_VX 0
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+# define HAVE_TO_VX 0
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+#endif
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#if defined HAVE_S390_VX_GCC_SUPPORT
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# define ASM_CLOBBER_VR(NR) , NR
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@@ -53,8 +68,8 @@
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#define MIN_NEEDED_FROM 2
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#define MAX_NEEDED_FROM 4
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#define MIN_NEEDED_TO 4
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-#define FROM_LOOP __from_utf16_loop
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-#define TO_LOOP __to_utf16_loop
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+#define FROM_LOOP FROM_LOOP_DEFAULT
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+#define TO_LOOP TO_LOOP_DEFAULT
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#define FROM_DIRECTION (dir == from_utf16)
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#define ONE_DIRECTION 0
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@@ -174,9 +189,10 @@ gconv_end (struct __gconv_step *data)
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/* Conversion function from UTF-16 to UTF-32 internal/BE. */
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+#if HAVE_FROM_C == 1
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/* The software routine is copied from utf-16.c (minus bytes
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swapping). */
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-#define BODY_FROM_C \
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+# define BODY_FROM_C \
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{ \
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uint16_t u1 = get16 (inptr); \
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\
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@@ -220,7 +236,22 @@ gconv_end (struct __gconv_step *data)
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outptr += 4; \
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}
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-#define BODY_FROM_VX \
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+
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+/* Generate loop-function with software routing. */
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+# define MIN_NEEDED_INPUT MIN_NEEDED_FROM
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+# define MAX_NEEDED_INPUT MAX_NEEDED_FROM
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+# define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
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+# define FROM_LOOP_C __from_utf16_loop_c
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+# define LOOPFCT FROM_LOOP_C
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+# define LOOP_NEED_FLAGS
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+# define BODY BODY_FROM_C
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+# include <iconv/loop.c>
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+#else
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+# define FROM_LOOP_C NULL
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+#endif /* HAVE_FROM_C != 1 */
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+
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+#if HAVE_FROM_VX == 1
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+# define BODY_FROM_VX \
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{ \
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size_t inlen = inend - inptr; \
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size_t outlen = outend - outptr; \
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@@ -255,7 +286,7 @@ gconv_end (struct __gconv_step *data)
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/* Setup to check for ch >= 0xd800 && ch <= 0xdfff. (v30, v31) */ \
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"9: .short 0xd800,0xdfff,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
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" .short 0xa000,0xc000,0x0,0x0,0x0,0x0,0x0,0x0\n\t" \
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- /* At least on uint16_t is in range of surrogates. \
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+ /* At least one uint16_t is in range of surrogates. \
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Store the preceding chars. */ \
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"10: vlgvb %[R_TMP],%%v19,7\n\t" \
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" vuplhh %%v17,%%v16\n\t" \
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@@ -351,52 +382,26 @@ gconv_end (struct __gconv_step *data)
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}
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-/* Generate loop-function with software routing. */
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-#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
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-#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
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-#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
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-#if defined HAVE_S390_VX_ASM_SUPPORT
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-# define LOOPFCT __from_utf16_loop_c
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-# define LOOP_NEED_FLAGS
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-# define BODY BODY_FROM_C
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-# include <iconv/loop.c>
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-
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/* Generate loop-function with hardware vector instructions. */
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# define MIN_NEEDED_INPUT MIN_NEEDED_FROM
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# define MAX_NEEDED_INPUT MAX_NEEDED_FROM
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# define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
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-# define LOOPFCT __from_utf16_loop_vx
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+# define FROM_LOOP_VX __from_utf16_loop_vx
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+# define LOOPFCT FROM_LOOP_VX
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# define LOOP_NEED_FLAGS
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# define BODY BODY_FROM_VX
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# include <iconv/loop.c>
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-
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-/* Generate ifunc'ed loop function. */
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-__typeof(__from_utf16_loop_c)
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-__attribute__ ((ifunc ("__from_utf16_loop_resolver")))
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-__from_utf16_loop;
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-
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-static void *
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-__from_utf16_loop_resolver (unsigned long int dl_hwcap)
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-{
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- if (dl_hwcap & HWCAP_S390_VX)
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- return __from_utf16_loop_vx;
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- else
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- return __from_utf16_loop_c;
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-}
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-
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-strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
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#else
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-# define LOOPFCT FROM_LOOP
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-# define LOOP_NEED_FLAGS
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-# define BODY BODY_FROM_C
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-# include <iconv/loop.c>
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-#endif
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+# define FROM_LOOP_VX NULL
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+#endif /* HAVE_FROM_VX != 1 */
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+
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/* Conversion from UTF-32 internal/BE to UTF-16. */
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+#if HAVE_TO_C == 1
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/* The software routine is copied from utf-16.c (minus bytes
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swapping). */
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-#define BODY_TO_C \
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+# define BODY_TO_C \
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{ \
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uint32_t c = get32 (inptr); \
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\
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@@ -439,7 +444,21 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
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inptr += 4; \
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}
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-#define BODY_TO_VX \
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+/* Generate loop-function with software routing. */
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+# define MIN_NEEDED_INPUT MIN_NEEDED_TO
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+# define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
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+# define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
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+# define TO_LOOP_C __to_utf16_loop_c
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+# define LOOPFCT TO_LOOP_C
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+# define LOOP_NEED_FLAGS
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+# define BODY BODY_TO_C
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+# include <iconv/loop.c>
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+#else
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+# define TO_LOOP_C NULL
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+#endif /* HAVE_TO_C != 1 */
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+
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+#if HAVE_TO_VX == 1
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+# define BODY_TO_VX \
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{ \
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size_t inlen = inend - inptr; \
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size_t outlen = outend - outptr; \
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@@ -563,43 +582,22 @@ strong_alias (__from_utf16_loop_c_single, __from_utf16_loop_single)
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STANDARD_TO_LOOP_ERR_HANDLER (4); \
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}
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-/* Generate loop-function with software routing. */
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-#define MIN_NEEDED_INPUT MIN_NEEDED_TO
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-#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
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-#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
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-#define LOOPFCT __to_utf16_loop_c
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-#define LOOP_NEED_FLAGS
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-#define BODY BODY_TO_C
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-#include <iconv/loop.c>
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-
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-#if defined HAVE_S390_VX_ASM_SUPPORT
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/* Generate loop-function with hardware vector instructions. */
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# define MIN_NEEDED_INPUT MIN_NEEDED_TO
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# define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
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# define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
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-# define LOOPFCT __to_utf16_loop_vx
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+# define TO_LOOP_VX __to_utf16_loop_vx
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+# define LOOPFCT TO_LOOP_VX
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# define LOOP_NEED_FLAGS
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# define BODY BODY_TO_VX
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# include <iconv/loop.c>
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+#else
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+# define TO_LOOP_VX NULL
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+#endif /* HAVE_TO_VX != 1 */
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+
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+/* This file also exists in sysdeps/s390/multiarch/ which
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+ generates ifunc resolvers for FROM/TO_LOOP functions
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+ and includes iconv/skeleton.c afterwards. */
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+#if ! defined USE_MULTIARCH
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+# include <iconv/skeleton.c>
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#endif
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-
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-/* Generate ifunc'ed loop function. */
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-__typeof(__to_utf16_loop_c)
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-__attribute__ ((ifunc ("__to_utf16_loop_resolver")))
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-__to_utf16_loop;
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-
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-static void *
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-__to_utf16_loop_resolver (unsigned long int dl_hwcap)
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-{
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-#if defined HAVE_S390_VX_ASM_SUPPORT
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- if (dl_hwcap & HWCAP_S390_VX)
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- return __to_utf16_loop_vx;
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- else
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-#endif
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- return __to_utf16_loop_c;
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-}
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-
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-strong_alias (__to_utf16_loop_c_single, __to_utf16_loop_single)
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-
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-
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-#include <iconv/skeleton.c>
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--
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1.8.3.1
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