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[PATCH 4/4] S/390: Provide hardware accelerated iconv modules forUTF conversions


Hi,

the attached patch introduces S/390 iconv modules using hardware
instructions for UTF conversions.

Bye,

-Andreas-


2009-04-28  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* sysdeps/s390/s390-64/iconvdata/Makefile: New file.
	* sysdeps/s390/s390-64/iconvdata/utf16-utf32-z9.c: New file.
	* sysdeps/s390/s390-64/iconvdata/utf8-utf16-z9.c: New file.
	* sysdeps/s390/s390-64/iconvdata/utf8-utf32-z9.c: New file.


Index: libc/sysdeps/s390/s390-64/iconvdata/Makefile
===================================================================
--- libc.orig/sysdeps/s390/s390-64/iconvdata/Makefile
+++ libc/sysdeps/s390/s390-64/iconvdata/Makefile
@@ -2,23 +2,74 @@ ifeq ($(subdir),iconvdata)
 ISO-8859-1_CP037_Z900-routines := iso-8859-1_cp037_z900
 ISO-8859-1_CP037_Z900-map := gconv.map
 
-extra-modules-left += ISO-8859-1_CP037_Z900
+ISO-8859-1_CP037_Z900-routines := iso-8859-1_cp037_z900
+ISO-8859-1_CP037_Z900-map := gconv.map
+
+UTF8_UTF32_Z9-routines := utf8-utf32-z9
+UTF8_UTF32_Z9-map := gconv.map
+
+UTF16_UTF32_Z9-routines := utf16-utf32-z9
+UTF16_UTF32_Z9-map := gconv.map
+
+UTF8_UTF16_Z9-routines := utf8-utf16-z9
+UTF8_UTF16_Z9-map := gconv.map
+
+extra-modules-left += ISO-8859-1_CP037_Z900 UTF8_UTF16_Z9 UTF16_UTF32_Z9 UTF8_UTF32_Z9
 include extra-module.mk
 
-extra-objs      += ISO-8859-1_CP037_Z900.so
-install-others  += $(inst_gconvdir)/ISO-8859-1_CP037_Z900.so
+extra-objs      += ISO-8859-1_CP037_Z900.so UTF8_UTF32_Z9.so UTF16_UTF32_Z9.so UTF8_UTF32_Z9.so
+install-others  += $(inst_gconvdir)/ISO-8859-1_CP037_Z900.so \
+		   $(inst_gconvdir)/UTF8_UTF32_Z9.so \
+		   $(inst_gconvdir)/UTF16_UTF32_Z9.so \
+		   $(inst_gconvdir)/UTF8_UTF16_Z9.so
 
-distribute += iso-8859-1_cp037_z900.c
+distribute += iso-8859-1_cp037_z900.c utf8-utf32-z9.c utf16-utf32-z9.c utf8-utf16-z9
 
 $(inst_gconvdir)/ISO-8859-1_CP037_Z900.so: $(objpfx)ISO-8859-1_CP037_Z900.so $(+force)
 	$(do-install-program)
+$(inst_gconvdir)/ISO-8859-1_CP037_Z900.so: $(objpfx)ISO-8859-1_CP037_Z900.so $(+force)
+	$(do-install-program)
+$(inst_gconvdir)/UTF8_UTF32_Z9.so: $(objpfx)UTF8_UTF32_Z9.so $(+force)
+	$(do-install-program)
+$(inst_gconvdir)/UTF16_UTF32_Z9.so: $(objpfx)UTF16_UTF32_Z9.so $(+force)
+	$(do-install-program)
+$(inst_gconvdir)/UTF8_UTF16_Z9.so: $(objpfx)UTF8_UTF16_Z9.so $(+force)
+	$(do-install-program)
 
 $(objpfx)gconv-modules-s390: gconv-modules $(+force)
 	cp $< $@
+	echo >> $@
+	echo "# S/390 hardware accelerated modules" >> $@
 	echo -n "module	ISO-8859-1//		IBM037//	" >> $@
 	echo "	ISO-8859-1_CP037_Z900	1" >> $@
 	echo -n "module	IBM037//		ISO-8859-1//	" >> $@
 	echo "	ISO-8859-1_CP037_Z900	1" >> $@
+	echo -n "module	ISO-10646/UTF8/		UTF-32//	" >> $@
+	echo "	UTF8_UTF32_Z9		1" >> $@
+	echo -n "module	UTF-32BE//		ISO-10646/UTF8/	" >> $@
+	echo "	UTF8_UTF32_Z9		1" >> $@
+	echo -n "module	ISO-10646/UTF8/		UTF-32BE//	" >> $@
+	echo "	UTF8_UTF32_Z9		1" >> $@
+	echo -n "module	UTF-16BE//		UTF-32//	" >> $@
+	echo "	UTF16_UTF32_Z9		1" >> $@
+	echo -n "module	UTF-32BE//		UTF-16//	" >> $@
+	echo "	UTF16_UTF32_Z9		1" >> $@
+	echo -n "module	INTERNAL		UTF-16//	" >> $@
+	echo "	UTF16_UTF32_Z9		1" >> $@
+	echo -n "module	UTF-32BE//		UTF-16BE//	" >> $@
+	echo "	UTF16_UTF32_Z9		1" >> $@
+	echo -n "module	INTERNAL		UTF-16BE//	" >> $@
+	echo "	UTF16_UTF32_Z9		1" >> $@
+	echo -n "module	UTF-16BE//		UTF-32BE//	" >> $@
+	echo "	UTF16_UTF32_Z9		1" >> $@
+	echo -n "module	UTF-16BE//		INTERNAL	" >> $@
+	echo "	UTF16_UTF32_Z9		1" >> $@
+	echo -n "module	UTF-16BE//		ISO-10646/UTF8/	" >> $@
+	echo "	UTF8_UTF16_Z9		1" >> $@
+	echo -n "module	ISO-10646/UTF8/		UTF-16//	" >> $@
+	echo "	UTF8_UTF16_Z9		1" >> $@
+	echo -n "module	ISO-10646/UTF8/		UTF-16BE//	" >> $@
+	echo "	UTF8_UTF16_Z9		1" >> $@
 
 $(inst_gconvdir)/gconv-modules: $(objpfx)gconv-modules-s390 $(+force)
 	$(do-install)
Index: libc/sysdeps/s390/s390-64/iconvdata/utf16-utf32-z9.c
===================================================================
--- /dev/null
+++ libc/sysdeps/s390/s390-64/iconvdata/utf16-utf32-z9.c
@@ -0,0 +1,301 @@
+/* Conversion between UTF-16 and UTF-32 BE/internal.
+
+   This module uses the Z9-109 variants of the Convert Unicode
+   instructions.
+   Copyright (C) 1997-2009 Free Software Foundation, Inc.
+
+   Author: Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
+   Based on the work by Ulrich Drepper  <drepper@cygnus.com>, 1997.
+
+   Thanks to Daniel Appich who covered the relevant performance work
+   in his diploma thesis.
+
+   This 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.
+
+   This 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <dlfcn.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <dl-procinfo.h>
+#include <gconv.h>
+
+/* UTF-32 big endian byte order mark.  */
+#define BOM_UTF32                0x0000feffu
+
+/* UTF-16 big endian byte order mark.  */
+#define BOM_UTF16	0xfeff
+
+#define DEFINE_INIT		0
+#define DEFINE_FINI		0
+#define MIN_NEEDED_FROM		2
+#define MAX_NEEDED_FROM		4
+#define MIN_NEEDED_TO		4
+#define FROM_LOOP		from_utf16_loop
+#define TO_LOOP			to_utf16_loop
+#define FROM_DIRECTION		(dir == from_utf16)
+#define PREPARE_LOOP							\
+  enum direction dir = ((struct utf16_data *) step->__data)->dir;	\
+  int emit_bom = ((struct utf16_data *) step->__data)->emit_bom;	\
+									\
+  if (emit_bom && !data->__internal_use					\
+      && data->__invocation_counter == 0)				\
+    {									\
+      if (dir == to_utf16)						\
+	{								\
+          /* Emit the UTF-16 Byte Order Mark.  */			\
+          if (__builtin_expect (outbuf + 2 > outend, 0))		\
+	    return __GCONV_FULL_OUTPUT;					\
+									\
+	  put16u (outbuf, BOM_UTF16);					\
+	  outbuf += 2;							\
+	}								\
+      else								\
+	{								\
+          /* Emit the UTF-32 Byte Order Mark.  */			\
+	  if (__builtin_expect (outbuf + 4 > outend, 0))		\
+	    return __GCONV_FULL_OUTPUT;					\
+									\
+	  put32u (outbuf, BOM_UTF32);					\
+	  outbuf += 4;							\
+	}								\
+    }
+
+/* Direction of the transformation.  */
+enum direction
+{
+  illegal_dir,
+  to_utf16,
+  from_utf16
+};
+
+struct utf16_data
+{
+  enum direction dir;
+  int emit_bom;
+};
+
+
+extern int gconv_init (struct __gconv_step *step);
+int
+gconv_init (struct __gconv_step *step)
+{
+  /* Determine which direction.  */
+  struct utf16_data *new_data;
+  enum direction dir = illegal_dir;
+  int emit_bom;
+  int result;
+
+  emit_bom = (__strcasecmp (step->__to_name, "UTF-32//") == 0
+	      || __strcasecmp (step->__to_name, "UTF-16//") == 0);
+
+  if (__strcasecmp (step->__from_name, "UTF-16BE//") == 0
+      && (__strcasecmp (step->__to_name, "UTF-32//") == 0
+	  || __strcasecmp (step->__to_name, "UTF-32BE//") == 0
+      	  || __strcasecmp (step->__to_name, "INTERNAL") == 0))
+    {
+      dir = from_utf16;
+    }
+  else if ((__strcasecmp (step->__to_name, "UTF-16//") == 0
+	    || __strcasecmp (step->__to_name, "UTF-16BE//") == 0)
+	   && (__strcasecmp (step->__from_name, "UTF-32BE//") == 0
+	       || __strcasecmp (step->__from_name, "INTERNAL") == 0))
+    {
+      dir = to_utf16;
+    }
+
+  result = __GCONV_NOCONV;
+  if (dir != illegal_dir)
+    {
+      new_data = (struct utf16_data *) malloc (sizeof (struct utf16_data));
+
+      result = __GCONV_NOMEM;
+      if (new_data != NULL)
+	{
+	  new_data->dir = dir;
+	  new_data->emit_bom = emit_bom;
+	  step->__data = new_data;
+
+	  if (dir == from_utf16)
+	    {
+	      step->__min_needed_from = MIN_NEEDED_FROM;
+	      step->__max_needed_from = MIN_NEEDED_FROM;
+	      step->__min_needed_to = MIN_NEEDED_TO;
+	      step->__max_needed_to = MIN_NEEDED_TO;
+	    }
+	  else
+	    {
+	      step->__min_needed_from = MIN_NEEDED_TO;
+	      step->__max_needed_from = MIN_NEEDED_TO;
+	      step->__min_needed_to = MIN_NEEDED_FROM;
+	      step->__max_needed_to = MIN_NEEDED_FROM;
+	    }
+
+	  step->__stateful = 0;
+
+	  result = __GCONV_OK;
+	}
+    }
+
+  return result;
+}
+
+
+extern void gconv_end (struct __gconv_step *data);
+void
+gconv_end (struct __gconv_step *data)
+{
+  free (data->__data);
+}
+
+/* The macro for the hardware loop.  This is used for both
+   directions.  */
+#define HARDWARE_CONVERT(INSTRUCTION)					\
+  {									\
+    register const unsigned char* pInput asm ("2") = inptr;		\
+    register unsigned long long inlen asm ("3") = inend - inptr;	\
+    register unsigned char* pOutput asm ("4") = outptr;			\
+    register unsigned long long outlen asm("5") = outend - outptr;	\
+    uint64_t cc = 0;							\
+									\
+    asm volatile ("0: " INSTRUCTION "  \n\t"				\
+                  "   jo     0b        \n\t"				\
+		  "   ipm    %2        \n"			        \
+		  : "+a" (pOutput), "+a" (pInput), "=d" (cc),		\
+		    "+d" (outlen), "+d" (inlen)				\
+		  :							\
+		  : "cc");						\
+									\
+    inptr = pInput;							\
+    outptr = pOutput;							\
+    cc >>= 28;          						\
+									\
+    if (cc == 1)							\
+      {									\
+	result = __GCONV_FULL_OUTPUT;					\
+	break;								\
+      }									\
+    else if (cc == 2)							\
+      {									\
+	result = __GCONV_ILLEGAL_INPUT;					\
+	break;								\
+      }									\
+    }
+
+/* Conversion function from UTF-16 to UTF-32 internal/BE.  */
+
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY_SELECT_ALTERNATE   (GLRO (dl_hwcap) & HWCAP_S390_ETF3EH)
+#define BODY_ALTERNATE          HARDWARE_CONVERT("cu24 %0, %1, 1")
+/* The software routine is copied from utf-16.c (minus bytes
+   swapping).  */
+#define BODY								\
+  {									\
+    uint16_t u1 = get16 (inptr);					\
+									\
+    if (__builtin_expect (u1 < 0xd800, 1) || u1 > 0xdfff)		\
+      {									\
+	/* No surrogate.  */						\
+	put32 (outptr, u1);						\
+	inptr += 2;							\
+      }									\
+    else								\
+      {									\
+	/* It's a surrogate character.  At least the first word says	\
+	   it is.  */							\
+	if (__builtin_expect (inptr + 4 > inend, 0))			\
+	  {								\
+	    /* We don't have enough input for another complete input	\
+	       character.  */						\
+	    result = __GCONV_INCOMPLETE_INPUT;				\
+	    break;							\
+	  }								\
+									\
+	inptr += 2;							\
+	uint16_t u2 = get16 (inptr);					\
+	if (__builtin_expect (u2 < 0xdc00, 0)				\
+	    || __builtin_expect (u2 > 0xdfff, 0))			\
+	  {								\
+	    /* This is no valid second word for a surrogate.  */	\
+	    inptr -= 2;							\
+	    STANDARD_FROM_LOOP_ERR_HANDLER (2);				\
+	  }								\
+									\
+	put32 (outptr, ((u1 - 0xd7c0) << 10) + (u2 - 0xdc00));		\
+	inptr += 2;							\
+      }									\
+    outptr += 4;							\
+  }
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+
+/* Conversion from UTF-32 internal/BE to UTF-16.  */
+
+#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
+#define LOOPFCT			TO_LOOP
+#define BODY_SELECT_ALTERNATE   (GLRO (dl_hwcap) & HWCAP_S390_ETF3EH)
+#define BODY_ALTERNATE          HARDWARE_CONVERT("cu42 %0, %1")
+/* The software routine is copied from utf-16.c (minus bytes
+   swapping).  */
+#define BODY								\
+  {									\
+    uint32_t c = get32 (inptr);						\
+									\
+    if (__builtin_expect (c >= 0xd800 && c < 0xe000, 0))		\
+      {									\
+	/* Surrogate characters in UCS-4 input are not valid.		\
+	   We must catch this.  If we let surrogates pass through,	\
+	   attackers could make a security hole exploit by		\
+	   synthesizing any desired plane 1-16 character.  */		\
+	result = __GCONV_ILLEGAL_INPUT;					\
+	if (! ignore_errors_p ())					\
+	  break;							\
+	inptr += 4;							\
+	++*irreversible;						\
+	continue;							\
+      }									\
+									\
+    if (__builtin_expect (c >= 0x10000, 0))				\
+      {									\
+	if (__builtin_expect (c >= 0x110000, 0))			\
+	  {								\
+	    STANDARD_TO_LOOP_ERR_HANDLER (4);				\
+	  }								\
+									\
+	/* Generate a surrogate character.  */				\
+	if (__builtin_expect (outptr + 4 > outend, 0))			\
+	  {								\
+	    /* Overflow in the output buffer.  */			\
+	    result = __GCONV_FULL_OUTPUT;				\
+	    break;							\
+	  }								\
+									\
+	put16 (outptr, 0xd7c0 + (c >> 10));				\
+	outptr += 2;							\
+	put16 (outptr, 0xdc00 + (c & 0x3ff));				\
+      }									\
+    else								\
+      put16 (outptr, c);						\
+    outptr += 2;							\
+    inptr += 4;								\
+  }
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+
+#include <iconv/skeleton.c>
Index: libc/sysdeps/s390/s390-64/iconvdata/utf8-utf16-z9.c
===================================================================
--- /dev/null
+++ libc/sysdeps/s390/s390-64/iconvdata/utf8-utf16-z9.c
@@ -0,0 +1,436 @@
+/* Conversion between UTF-16 and UTF-32 BE/internal.
+
+   This module uses the Z9-109 variants of the Convert Unicode
+   instructions.
+   Copyright (C) 1997-2009 Free Software Foundation, Inc.
+
+   Author: Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
+   Based on the work by Ulrich Drepper  <drepper@cygnus.com>, 1997.
+
+   Thanks to Daniel Appich who covered the relevant performance work
+   in his diploma thesis.
+
+   This 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.
+
+   This 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <dlfcn.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <dl-procinfo.h>
+#include <gconv.h>
+
+/* UTF-16 big endian byte order mark.  */
+#define BOM_UTF16	0xfeff
+
+#define DEFINE_INIT		0
+#define DEFINE_FINI		0
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		4
+#define MIN_NEEDED_TO		2
+#define MAX_NEEDED_TO		4
+#define FROM_LOOP		from_utf8_loop
+#define TO_LOOP			to_utf8_loop
+#define FROM_DIRECTION		(dir == from_utf8)
+#define PREPARE_LOOP							\
+  enum direction dir = ((struct utf8_data *) step->__data)->dir;	\
+  int emit_bom = ((struct utf8_data *) step->__data)->emit_bom;		\
+									\
+  if (emit_bom && !data->__internal_use					\
+      && data->__invocation_counter == 0)				\
+    {									\
+      /* Emit the UTF-16 Byte Order Mark.  */				\
+      if (__builtin_expect (outbuf + 2 > outend, 0))			\
+	return __GCONV_FULL_OUTPUT;					\
+									\
+      put16u (outbuf, BOM_UTF16);					\
+      outbuf += 2;							\
+    }
+
+/* Direction of the transformation.  */
+enum direction
+{
+  illegal_dir,
+  to_utf8,
+  from_utf8
+};
+
+struct utf8_data
+{
+  enum direction dir;
+  int emit_bom;
+};
+
+
+extern int gconv_init (struct __gconv_step *step);
+int
+gconv_init (struct __gconv_step *step)
+{
+  /* Determine which direction.  */
+  struct utf8_data *new_data;
+  enum direction dir = illegal_dir;
+  int emit_bom;
+  int result;
+
+  emit_bom = (__strcasecmp (step->__to_name, "UTF-16//") == 0);
+
+  if (__strcasecmp (step->__from_name, "ISO-10646/UTF8/") == 0
+      && (__strcasecmp (step->__to_name, "UTF-16//") == 0
+	  || __strcasecmp (step->__to_name, "UTF-16BE//") == 0))
+    {
+      dir = from_utf8;
+    }
+  else if (__strcasecmp (step->__from_name, "UTF-16BE//") == 0
+	   && __strcasecmp (step->__to_name, "ISO-10646/UTF8/") == 0)
+    {
+      dir = to_utf8;
+    }
+
+  result = __GCONV_NOCONV;
+  if (dir != illegal_dir)
+    {
+      new_data = (struct utf8_data *) malloc (sizeof (struct utf8_data));
+
+      result = __GCONV_NOMEM;
+      if (new_data != NULL)
+	{
+	  new_data->dir = dir;
+	  new_data->emit_bom = emit_bom;
+	  step->__data = new_data;
+
+	  if (dir == from_utf8)
+	    {
+	      step->__min_needed_from = MIN_NEEDED_FROM;
+	      step->__max_needed_from = MIN_NEEDED_FROM;
+	      step->__min_needed_to = MIN_NEEDED_TO;
+	      step->__max_needed_to = MIN_NEEDED_TO;
+	    }
+	  else
+	    {
+	      step->__min_needed_from = MIN_NEEDED_TO;
+	      step->__max_needed_from = MIN_NEEDED_TO;
+	      step->__min_needed_to = MIN_NEEDED_FROM;
+	      step->__max_needed_to = MIN_NEEDED_FROM;
+	    }
+
+	  step->__stateful = 0;
+
+	  result = __GCONV_OK;
+	}
+    }
+
+  return result;
+}
+
+
+extern void gconv_end (struct __gconv_step *data);
+void
+gconv_end (struct __gconv_step *data)
+{
+  free (data->__data);
+}
+
+/* The macro for the hardware loop.  This is used for both
+   directions.  */
+#define HARDWARE_CONVERT(INSTRUCTION)					\
+  {									\
+    register const unsigned char* pInput asm ("2") = inptr;		\
+    register unsigned long long inlen asm ("3") = inend - inptr;	\
+    register unsigned char* pOutput asm ("4") = outptr;			\
+    register unsigned long long outlen asm("5") = outend - outptr;	\
+    uint64_t cc = 0;							\
+									\
+    asm volatile ("0: " INSTRUCTION "  \n\t"				\
+                  "   jo     0b        \n\t"				\
+		  "   ipm    %2        \n"			        \
+		  : "+a" (pOutput), "+a" (pInput), "=d" (cc),		\
+		    "+d" (outlen), "+d" (inlen)				\
+		  :							\
+		  : "cc");						\
+									\
+    inptr = pInput;							\
+    outptr = pOutput;							\
+    cc >>= 28;								\
+									\
+    if (cc == 1)							\
+      {									\
+	result = __GCONV_FULL_OUTPUT;					\
+	break;								\
+      }									\
+    else if (cc == 2)							\
+      {									\
+	result = __GCONV_ILLEGAL_INPUT;					\
+	break;								\
+      }									\
+    }
+
+/* Conversion function from UTF-8 to UTF-16.  */
+
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY_SELECT_ALTERNATE   (GLRO (dl_hwcap) & HWCAP_S390_ETF3EH)
+#define BODY_ALTERNATE          HARDWARE_CONVERT("cu12 %0, %1, 1")
+/* The software implementation is based on the code in gconv_simple.c.  */
+#define BODY								\
+  {									\
+    /* Next input byte.  */						\
+    uint16_t ch = *inptr;						\
+									\
+    if (__builtin_expect (ch < 0x80, 1))				\
+      {									\
+	/* One byte sequence.  */					\
+	++inptr;							\
+      }									\
+    else								\
+      {									\
+	uint_fast32_t cnt;						\
+	uint_fast32_t i;						\
+									\
+	if (ch >= 0xc2 && ch < 0xe0)					\
+	  {								\
+	    /* We expect two bytes.  The first byte cannot be 0xc0 or 0xc1, \
+	       otherwise the wide character could have been represented	\
+	       using a single byte.  */					\
+	    cnt = 2;							\
+	    ch &= 0x1f;							\
+	  }								\
+        else if (__builtin_expect ((ch & 0xf0) == 0xe0, 1))		\
+	  {								\
+	    /* We expect three bytes.  */				\
+	    cnt = 3;							\
+	    ch &= 0x0f;							\
+	  }								\
+	else if (__builtin_expect ((ch & 0xf8) == 0xf0, 1))		\
+	  {								\
+	    /* We expect four bytes.  */				\
+	    cnt = 4;							\
+	    ch &= 0x07;							\
+	  }								\
+	else								\
+	  {								\
+	    /* Search the end of this ill-formed UTF-8 character.  This	\
+	       is the next byte with (x & 0xc0) != 0x80.  */		\
+	    i = 0;							\
+	    do								\
+	      ++i;							\
+	    while (inptr + i < inend					\
+		   && (*(inptr + i) & 0xc0) == 0x80			\
+		   && i < 5);						\
+									\
+	  errout:							\
+	    STANDARD_FROM_LOOP_ERR_HANDLER (i);				\
+	  }								\
+									\
+	if (__builtin_expect (inptr + cnt > inend, 0))			\
+	  {								\
+	    /* We don't have enough input.  But before we report that check \
+	       that all the bytes are correct.  */			\
+	    for (i = 1; inptr + i < inend; ++i)				\
+	      if ((inptr[i] & 0xc0) != 0x80)				\
+		break;							\
+									\
+	    if (__builtin_expect (inptr + i == inend, 1))		\
+	      {								\
+		result = __GCONV_INCOMPLETE_INPUT;			\
+		break;							\
+	      }								\
+									\
+	    goto errout;						\
+	  }								\
+									\
+	if (cnt == 4)							\
+	  {								\
+	    /* For 4 byte UTF-8 chars two UTF-16 chars (high and	\
+	       low) are needed.  */					\
+	    uint16_t zabcd, high, low;					\
+	    								\
+	    if (__builtin_expect (outptr + 4 > outend, 0))		\
+	      {								\
+		/* Overflow in the output buffer.  */			\
+		result = __GCONV_FULL_OUTPUT;				\
+		break;							\
+	      }								\
+									\
+	    /* See Principles of Operations cu12.  */			\
+	    zabcd = (((inptr[0] & 0x7) << 2) | ((inptr[1] & 0x30) >> 4)) - 1;	\
+									\
+	    /* z-bit must be zero after subtracting 1.  */		\
+	    if (zabcd & 0x10)						\
+	      goto errout;						\
+									\
+	    high = (uint16_t)(0xd8 << 8);       /* high surrogate id */ \
+	    high |= zabcd << 6;	                        /* abcd bits */	\
+	    high |= (inptr[1] & 0xf) << 2;              /* efgh bits */	\
+	    high |= (inptr[2] & 0x30) >> 4;               /* ij bits */	\
+									\
+	    low = (uint16_t)(0xdc << 8);         /* low surrogate id */ \
+	    low |= ((uint16_t)inptr[2] & 0xc) << 6;       /* kl bits */	\
+	    low |= (inptr[2] & 0x3) << 6;                 /* mn bits */	\
+	    low |= inptr[3] & 0x3f;                   /* opqrst bits */	\
+	    								\
+	    put16 (outptr, high);					\
+	    outptr += 2;						\
+	    put16 (outptr, low);					\
+	    outptr += 2;						\
+	    inptr += 4;							\
+	  }								\
+	else								\
+	  {								\
+	    /* Read the possible remaining bytes.  */			\
+	    for (i = 1; i < cnt; ++i)					\
+	      {								\
+		uint16_t byte = inptr[i];				\
+									\
+		if ((byte & 0xc0) != 0x80)				\
+		  /* This is an illegal encoding.  */			\
+		  break;						\
+									\
+		ch <<= 6;						\
+		ch |= byte & 0x3f;					\
+	      }								\
+	    inptr += cnt;						\
+									\
+	    /* Now adjust the pointers and store the result.  */	\
+	    *((uint16_t *) outptr) = ch;				\
+	    outptr += sizeof (uint16_t);				\
+	  }								\
+      }									\
+}
+
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+
+/* Conversion from UTF-16 to UTF-8.  */
+
+#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
+#define LOOPFCT			TO_LOOP
+#define BODY_SELECT_ALTERNATE   (GLRO (dl_hwcap) & HWCAP_S390_ETF3EH)
+#define BODY_ALTERNATE          HARDWARE_CONVERT("cu21 %0, %1")
+/* The software routine is based on the functionality of the S/390
+   hardware instruction (cu21) as described in the Principles of
+   Operation.  */
+#define BODY								\
+  {									\
+    uint16_t c = get16 (inptr);						\
+									\
+    if (__builtin_expect (c >= 0x0000 && c <= 0x007f, 1))		\
+      {									\
+	/* Single byte UTF-8 char.  */					\
+	*outptr = c & 0xff;						\
+	outptr++;							\
+      }									\
+    else if (c >= 0x0080 && c <= 0x07ff)				\
+      {									\
+        /* Two byte UTF-8 char.  */					\
+									\
+	if (__builtin_expect (outptr + 2 > outend, 0))			\
+	  {								\
+	    /* Overflow in the output buffer.  */			\
+	    result = __GCONV_FULL_OUTPUT;				\
+	    break;							\
+	  }								\
+									\
+        outptr[0] = 0xc0;						\
+        outptr[0] |= c >> 6;						\
+      									\
+        outptr[1] = 0x80;						\
+        outptr[1] |= c & 0x3f;						\
+									\
+	outptr += 2;							\
+      }									\
+    else if (c >= 0x0800 && c <= 0xd7ff)				\
+      {									\
+	/* Three byte UTF-8 char.  */					\
+									\
+	if (__builtin_expect (outptr + 3 > outend, 0))			\
+	  {								\
+	    /* Overflow in the output buffer.  */			\
+	    result = __GCONV_FULL_OUTPUT;				\
+	    break;							\
+	  }								\
+	outptr[0] = 0xe0;						\
+	outptr[0] |= c >> 12;						\
+									\
+	outptr[1] = 0x80;						\
+	outptr[1] |= (c >> 6) & 0x3f;					\
+									\
+	outptr[2] = 0x80;						\
+	outptr[2] = c & 0x3f;						\
+									\
+      }									\
+    else if (c >= 0xd800 && c <= 0xdbff)				\
+      {									\
+        /* Four byte UTF-8 char.  */					\
+	uint16_t low, uvwxy;						\
+									\
+	if (__builtin_expect (outptr + 4 > outend, 0))			\
+	  {								\
+	    /* Overflow in the output buffer.  */			\
+	    result = __GCONV_FULL_OUTPUT;				\
+	    break;							\
+	  }								\
+	inptr += 2;							\
+	if (__builtin_expect (inptr + 2 > inend, 0))			\
+	  {								\
+	    result = __GCONV_INCOMPLETE_INPUT;				\
+	    break;							\
+	  }								\
+									\
+	low = get16 (inptr);						\
+									\
+	if ((low & 0xfc) != 0xdc)					\
+	  {								\
+	    STANDARD_TO_LOOP_ERR_HANDLER (2);				\
+	  }								\
+	uvwxy = ((c >> 6) & 0xf) + 1;					\
+	outptr[0] = 0xf0;						\
+	outptr[0] |= uvwxy >> 2;					\
+									\
+	outptr[1] = 0x80;						\
+	outptr[1] |= (uvwxy << 4) & 0x30;				\
+	outptr[1] |= (c >> 2) & 0x0f;					\
+									\
+	outptr[2] = 0x80;						\
+	outptr[2] |= (c & 0x03) << 4;					\
+	outptr[2] |= (low >> 6) & 0x0f;					\
+									\
+	outptr[3] = 0x80;						\
+	outptr[3] |= low & 0x3f;					\
+									\
+	outptr += 4;							\
+      }									\
+    else								\
+      {									\
+	/* Search the end of this ill-formed UTF-8 character.  This	\
+	   is the next byte with (x & 0xc0) != 0x80.  */		\
+	int i = 0;							\
+	do								\
+	  ++i;								\
+	while (inptr + i < inend					\
+	       && (*(inptr + i) & 0xc0) == 0x80				\
+	       && i < 5);						\
+									\
+      errout:								\
+	STANDARD_FROM_LOOP_ERR_HANDLER (i);				\
+      }									\
+    inptr += 2;								\
+  }
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+
+#include <iconv/skeleton.c>
Index: libc/sysdeps/s390/s390-64/iconvdata/utf8-utf32-z9.c
===================================================================
--- /dev/null
+++ libc/sysdeps/s390/s390-64/iconvdata/utf8-utf32-z9.c
@@ -0,0 +1,443 @@
+/* Conversion between UTF-8 and UTF-32 BE/internal.
+
+   This module uses the Z9-109 variants of the Convert Unicode
+   instructions.
+   Copyright (C) 1997-2009 Free Software Foundation, Inc.
+
+   Author: Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
+   Based on the work by Ulrich Drepper  <drepper@cygnus.com>, 1997.
+
+   Thanks to Daniel Appich who covered the relevant performance work
+   in his diploma thesis.
+
+   This 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.
+
+   This 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <dlfcn.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <dl-procinfo.h>
+#include <gconv.h>
+
+/* UTF-32 big endian byte order mark.  */
+#define BOM	                0x0000feffu
+
+#define DEFINE_INIT		0
+#define DEFINE_FINI		0
+/* These definitions apply to the UTF-8 to UTF-32 direction.  The
+   software implementation for UTF-8 still supports multibyte
+   characters up to 6 bytes whereas the hardware variant does not.  */
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		6
+#define MIN_NEEDED_TO		4
+#define FROM_LOOP		from_utf8_loop
+#define TO_LOOP			to_utf8_loop
+#define FROM_DIRECTION		(dir == from_utf8)
+#define PREPARE_LOOP							\
+  enum direction dir = ((struct utf8_data *) step->__data)->dir;	\
+  int emit_bom = ((struct utf8_data *) step->__data)->emit_bom;		\
+									\
+  if (emit_bom && !data->__internal_use					\
+      && data->__invocation_counter == 0)				\
+    {									\
+      /* Emit the Byte Order Mark.  */					\
+      if (__builtin_expect (outbuf + 4 > outend, 0))			\
+	return __GCONV_FULL_OUTPUT;					\
+      									\
+      put32u (outbuf, BOM);						\
+      outbuf += 4;							\
+    }
+
+/* Direction of the transformation.  */
+enum direction
+{
+  illegal_dir,
+  to_utf8,
+  from_utf8
+};
+
+struct utf8_data
+{
+  enum direction dir;
+  int emit_bom;
+};
+
+
+extern int gconv_init (struct __gconv_step *step);
+int
+gconv_init (struct __gconv_step *step)
+{
+  /* Determine which direction.  */
+  struct utf8_data *new_data;
+  enum direction dir = illegal_dir;
+  int emit_bom;
+  int result;
+
+  emit_bom = (__strcasecmp (step->__to_name, "UTF-32//") == 0);
+
+  if (__strcasecmp (step->__from_name, "ISO-10646/UTF8/") == 0
+      && (__strcasecmp (step->__to_name, "UTF-32//") == 0
+	  || __strcasecmp (step->__to_name, "UTF-32BE//") == 0
+      	  || __strcasecmp (step->__to_name, "INTERNAL") == 0))
+    {
+      dir = from_utf8;
+    }
+  else if (__strcasecmp (step->__to_name, "ISO-10646/UTF8/") == 0
+	   && (__strcasecmp (step->__from_name, "UTF-32BE//") == 0
+	       || __strcasecmp (step->__from_name, "INTERNAL") == 0))
+    {
+      dir = to_utf8;
+    }
+
+  result = __GCONV_NOCONV;
+  if (dir != illegal_dir)
+    {
+      new_data = (struct utf8_data *) malloc (sizeof (struct utf8_data));
+
+      result = __GCONV_NOMEM;
+      if (new_data != NULL)
+	{
+	  new_data->dir = dir;
+	  new_data->emit_bom = emit_bom;
+	  step->__data = new_data;
+
+	  if (dir == from_utf8)
+	    {
+	      step->__min_needed_from = MIN_NEEDED_FROM;
+	      step->__max_needed_from = MIN_NEEDED_FROM;
+	      step->__min_needed_to = MIN_NEEDED_TO;
+	      step->__max_needed_to = MIN_NEEDED_TO;
+	    }
+	  else
+	    {
+	      step->__min_needed_from = MIN_NEEDED_TO;
+	      step->__max_needed_from = MIN_NEEDED_TO;
+	      step->__min_needed_to = MIN_NEEDED_FROM;
+	      step->__max_needed_to = MIN_NEEDED_FROM;
+	    }
+
+	  step->__stateful = 0;
+
+	  result = __GCONV_OK;
+	}
+    }
+
+  return result;
+}
+
+
+extern void gconv_end (struct __gconv_step *data);
+void
+gconv_end (struct __gconv_step *data)
+{
+  free (data->__data);
+}
+
+/* The macro for the hardware loop.  This is used for both
+   directions.  */
+#define HARDWARE_CONVERT(INSTRUCTION)					\
+  {									\
+    register const unsigned char* pInput asm ("2") = inptr;		\
+    register unsigned long long inlen asm ("3") = inend - inptr;	\
+    register unsigned char* pOutput asm ("4") = outptr;			\
+    register unsigned long long outlen asm("5") = outend - outptr;	\
+    uint64_t cc = 0;							\
+									\
+    asm volatile ("0: " INSTRUCTION "  \n\t"				\
+                  "   jo     0b        \n\t"				\
+		  "   ipm    %2        \n"				\
+		  : "+a" (pOutput), "+a" (pInput), "=d" (cc),		\
+		    "+d" (outlen), "+d" (inlen)				\
+		  :							\
+		  : "cc");						\
+									\
+    inptr = pInput;							\
+    outptr = pOutput;							\
+    cc >>= 28;          						\
+									\
+    if (cc == 1)							\
+      {									\
+	result = __GCONV_FULL_OUTPUT;					\
+	break;								\
+      }									\
+    else if (cc == 2)							\
+      {									\
+	result = __GCONV_ILLEGAL_INPUT;					\
+	break;								\
+      }									\
+    }
+
+/* Conversion function from UTF-8 to UTF-32 internal/BE.  */
+
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY_SELECT_ALTERNATE   (GLRO (dl_hwcap) & HWCAP_S390_ETF3EH)
+#define BODY_ALTERNATE          HARDWARE_CONVERT("cu14 %0, %1, 1")
+/* The software routine is copied from gconv_simple.c.  */
+#define BODY             						\
+  {									\
+    /* Next input byte.  */						\
+    uint32_t ch = *inptr;						\
+									\
+    if (__builtin_expect (ch < 0x80, 1))				\
+      {									\
+	/* One byte sequence.  */					\
+	++inptr;							\
+      }									\
+    else								\
+      {									\
+	uint_fast32_t cnt;						\
+	uint_fast32_t i;						\
+									\
+	if (ch >= 0xc2 && ch < 0xe0)					\
+	  {								\
+	    /* We expect two bytes.  The first byte cannot be 0xc0 or 0xc1, \
+	       otherwise the wide character could have been represented	\
+	       using a single byte.  */					\
+	    cnt = 2;							\
+	    ch &= 0x1f;							\
+	  }								\
+        else if (__builtin_expect ((ch & 0xf0) == 0xe0, 1))		\
+	  {								\
+	    /* We expect three bytes.  */				\
+	    cnt = 3;							\
+	    ch &= 0x0f;							\
+	  }								\
+	else if (__builtin_expect ((ch & 0xf8) == 0xf0, 1))		\
+	  {								\
+	    /* We expect four bytes.  */				\
+	    cnt = 4;							\
+	    ch &= 0x07;							\
+	  }								\
+	else if (__builtin_expect ((ch & 0xfc) == 0xf8, 1))		\
+	  {								\
+	    /* We expect five bytes.  */				\
+	    cnt = 5;							\
+	    ch &= 0x03;							\
+	  }								\
+	else if (__builtin_expect ((ch & 0xfe) == 0xfc, 1))		\
+	  {								\
+	    /* We expect six bytes.  */					\
+	    cnt = 6;							\
+	    ch &= 0x01;							\
+	  }								\
+	else								\
+	  {								\
+	    /* Search the end of this ill-formed UTF-8 character.  This	\
+	       is the next byte with (x & 0xc0) != 0x80.  */		\
+	    i = 0;							\
+	    do								\
+	      ++i;							\
+	    while (inptr + i < inend					\
+		   && (*(inptr + i) & 0xc0) == 0x80			\
+		   && i < 5);						\
+									\
+	  errout:							\
+	    STANDARD_FROM_LOOP_ERR_HANDLER (i);				\
+	  }								\
+									\
+	if (__builtin_expect (inptr + cnt > inend, 0))			\
+	  {								\
+	    /* We don't have enough input.  But before we report that check \
+	       that all the bytes are correct.  */			\
+	    for (i = 1; inptr + i < inend; ++i)				\
+	      if ((inptr[i] & 0xc0) != 0x80)				\
+		break;							\
+									\
+	    if (__builtin_expect (inptr + i == inend, 1))		\
+	      {								\
+		result = __GCONV_INCOMPLETE_INPUT;			\
+		break;							\
+	      }								\
+									\
+	    goto errout;						\
+	  }								\
+									\
+	/* Read the possible remaining bytes.  */			\
+	for (i = 1; i < cnt; ++i)					\
+	  {								\
+	    uint32_t byte = inptr[i];					\
+									\
+	    if ((byte & 0xc0) != 0x80)					\
+	      /* This is an illegal encoding.  */			\
+	      break;							\
+									\
+	    ch <<= 6;							\
+	    ch |= byte & 0x3f;						\
+	  }								\
+									\
+	/* If i < cnt, some trail byte was not >= 0x80, < 0xc0.		\
+	   If cnt > 2 and ch < 2^(5*cnt-4), the wide character ch could	\
+	   have been represented with fewer than cnt bytes.  */		\
+	if (i < cnt || (cnt > 2 && (ch >> (5 * cnt - 4)) == 0))		\
+	  {								\
+	    /* This is an illegal encoding.  */				\
+	    goto errout;						\
+	  }								\
+									\
+	inptr += cnt;							\
+      }									\
+									\
+    /* Now adjust the pointers and store the result.  */		\
+    *((uint32_t *) outptr) = ch;					\
+    outptr += sizeof (uint32_t);					\
+  }
+#define LOOP_NEED_FLAGS
+
+#define STORE_REST							\
+  {									      \
+    /* We store the remaining bytes while converting them into the UCS4	      \
+       format.  We can assume that the first byte in the buffer is	      \
+       correct and that it requires a larger number of bytes than there	      \
+       are in the input buffer.  */					      \
+    wint_t ch = **inptrp;						      \
+    size_t cnt, r;							      \
+									      \
+    state->__count = inend - *inptrp;					      \
+									      \
+    if (ch >= 0xc2 && ch < 0xe0)					      \
+      {									      \
+	/* We expect two bytes.  The first byte cannot be 0xc0 or	      \
+	   0xc1, otherwise the wide character could have been		      \
+	   represented using a single byte.  */				      \
+	cnt = 2;							      \
+	ch &= 0x1f;							      \
+      }									      \
+    else if (__builtin_expect ((ch & 0xf0) == 0xe0, 1))			      \
+      {									      \
+	/* We expect three bytes.  */					      \
+	cnt = 3;							      \
+	ch &= 0x0f;							      \
+      }									      \
+    else if (__builtin_expect ((ch & 0xf8) == 0xf0, 1))			      \
+      {									      \
+	/* We expect four bytes.  */					      \
+	cnt = 4;							      \
+	ch &= 0x07;							      \
+      }									      \
+    else if (__builtin_expect ((ch & 0xfc) == 0xf8, 1))			      \
+      {									      \
+	/* We expect five bytes.  */					      \
+	cnt = 5;							      \
+	ch &= 0x03;							      \
+      }									      \
+    else								      \
+      {									      \
+	/* We expect six bytes.  */					      \
+	cnt = 6;							      \
+	ch &= 0x01;							      \
+      }									      \
+									      \
+    /* The first byte is already consumed.  */				      \
+    r = cnt - 1;							      \
+    while (++(*inptrp) < inend)						      \
+      {									      \
+	ch <<= 6;							      \
+	ch |= **inptrp & 0x3f;						      \
+	--r;								      \
+      }									      \
+									      \
+    /* Shift for the so far missing bytes.  */				      \
+    ch <<= r * 6;							      \
+									      \
+    /* Store the number of bytes expected for the entire sequence.  */	      \
+    state->__count |= cnt << 8;						      \
+									      \
+    /* Store the value.  */						      \
+    state->__value.__wch = ch;						      \
+  }
+
+#define UNPACK_BYTES \
+  {									      \
+    static const unsigned char inmask[5] = { 0xc0, 0xe0, 0xf0, 0xf8, 0xfc };  \
+    wint_t wch = state->__value.__wch;					      \
+    size_t ntotal = state->__count >> 8;				      \
+									      \
+    inlen = state->__count & 255;					      \
+									      \
+    bytebuf[0] = inmask[ntotal - 2];					      \
+									      \
+    do									      \
+      {									      \
+	if (--ntotal < inlen)						      \
+	  bytebuf[ntotal] = 0x80 | (wch & 0x3f);			      \
+	wch >>= 6;							      \
+      }									      \
+    while (ntotal > 1);							      \
+									      \
+    bytebuf[0] |= wch;							      \
+  }
+
+#define CLEAR_STATE \
+  state->__count = 0
+
+#include <iconv/loop.c>
+
+/* Conversion from UTF-32 internal/BE to UTF-8.  */
+
+#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
+#define LOOPFCT			TO_LOOP
+#define BODY_SELECT_ALTERNATE   (GLRO (dl_hwcap) & HWCAP_S390_ETF3EH)
+#define BODY_ALTERNATE          HARDWARE_CONVERT("cu41 %0, %1")
+/* The software routine is copied from gconv_simple.c.  */
+#define BODY							\
+  {								\
+    uint32_t wc = *((const uint32_t *) inptr);			\
+								\
+    if (__builtin_expect (wc < 0x80, 1))			\
+      /* It's an one byte sequence.  */				\
+      *outptr++ = (unsigned char) wc;				\
+    else if (__builtin_expect (wc <= 0x7fffffff, 1))		\
+      {								\
+	size_t step;						\
+	unsigned char *start;					\
+								\
+	for (step = 2; step < 6; ++step)			\
+	  if ((wc & (~(uint32_t)0 << (5 * step + 1))) == 0)	\
+	    break;						\
+								\
+	if (__builtin_expect (outptr + step > outend, 0))	\
+	  {							\
+	    /* Too long.  */					\
+	    result = __GCONV_FULL_OUTPUT;			\
+	    break;						\
+	  }							\
+								\
+	start = outptr;						\
+	*outptr = (unsigned char) (~0xff >> step);		\
+	outptr += step;						\
+	do							\
+	  {							\
+	    start[--step] = 0x80 | (wc & 0x3f);			\
+	    wc >>= 6;						\
+	  }							\
+	while (step > 1);					\
+	start[0] |= wc;						\
+      }								\
+    else							\
+      {								\
+	STANDARD_TO_LOOP_ERR_HANDLER (4);			\
+      }								\
+								\
+    inptr += 4;							\
+  }
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+
+#include <iconv/skeleton.c>


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