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authorUlrich Drepper <drepper@redhat.com>1998-04-20 18:41:05 +0000
committerUlrich Drepper <drepper@redhat.com>1998-04-20 18:41:05 +0000
commit8619129f3f0d5a9db6208be5bae6c2a8c9ce61a5 (patch)
tree033b6528f39a85f12db9d0859dbd1b90c2906eee /iconvdata
parentf1fa8b68f3e7623a3ef86dcd0c7d090ccf0389f5 (diff)
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Update.
1998-04-20 18:00  Ulrich Drepper  <drepper@cygnus.com>

	* libc.map: Add __dgettext to GLIBC_2.0 and __libc_longjmp, and
	__libc_siglongjmp to GLIBC_2.1.

	* elf/dl-minimal.c (__assert_perror_fail): Don't use strerror, use
	__strerror_r.

	* iconv/Makefile: Don't run tests now.

	* iconv/iconv_prog.c (process_block): If loop is repeated, call iconv
	with correct output buffer.

	Major rewrite of the low-level gconv functionality.
	* iconv/gconv.c: Rewritten.
	* iconv/gconv.h: Likewise.
	* iconv/gconv_builtin.c: Likewise.
	* iconv/gconv_builtin.h: Likewise.
	* iconv/gconv_conf.c: Likewise.
	* iconv/gconv_int.h: Likewise.
	* iconv/gconv_open.c: Likewise.
	* iconv/gconv_simple.c: Likewise.
	* iconv/iconv.c: Likewise.
	* iconvdata/8bit-gap.c: Likewise.
	* iconvdata/8bit-generic.c: Likewise.
	* iconvdata/Makefile: Likewise.
	* iconvdata/big5.c: Likewise.
	* iconvdata/cns11643.c: Likewise.
	* iconvdata/cns11643.h: Likewise.
	* iconvdata/cns11643l1.c: Likewise.
	* iconvdata/cns11643l1.h: Likewise.
	* iconvdata/ebcdic-at-de-a.c: Likewise.
	* iconvdata/ebcdic-at-de.c: Likewise.
	* iconvdata/ebcdic-ca-fr.c: Likewise.
	* iconvdata/euccn.c: Likewise.
	* iconvdata/eucjp.c: Likewise.
	* iconvdata/euckr.c: Likewise.
	* iconvdata/euctw.c: Likewise.
	* iconvdata/gb2312.c: Likewise.
	* iconvdata/gb2312.h: Likewise.
	* iconvdata/hp-roman8.c: Likewise.
	* iconvdata/iso646.c: Likewise.
	* iconvdata/iso6937.c: Likewise.
	* iconvdata/iso8859-1.c: Likewise.
	* iconvdata/iso8859-10.c: Likewise.
	* iconvdata/iso8859-2.c: Likewise.
	* iconvdata/iso8859-3.c: Likewise.
	* iconvdata/iso8859-4.c: Likewise.
	* iconvdata/iso8859-5.c: Likewise.
	* iconvdata/iso8859-6.c: Likewise.
	* iconvdata/iso8859-7.c: Likewise.
	* iconvdata/iso8859-8.c: Likewise.
	* iconvdata/iso8859-9.c: Likewise.
	* iconvdata/jis0201.c: Likewise.
	* iconvdata/jis0201.h: Likewise.
	* iconvdata/jis0208.c: Likewise.
	* iconvdata/jis0208.h: Likewise.
	* iconvdata/jis0212.c: Likewise.
	* iconvdata/jis0212.h: Likewise.
	* iconvdata/johab.c: Likewise.
	* iconvdata/koi-8.c: Likewise.
	* iconvdata/koi8-r.c: Likewise.
	* iconvdata/ksc5601.c: Likewise.
	* iconvdata/ksc5601.h: Likewise.
	* iconvdata/latin-greek-1.c: Likewise.
	* iconvdata/latin-greek.c: Likewise.
	* iconvdata/run-iconv-test.sh: Likewise.
	* iconvdata/sjis.c: Likewise.
	* iconvdata/t61.c: Likewise.
	* iconvdata/uhc.c: Likewise.
	* wcsmbs/btowc.c: Likewise.
	* wcsmbs/mbrtowc.c: Likewise.
	* wcsmbs/mbsnrtowcs.c: Likewise.
	* wcsmbs/mbsrtowcs.c: Likewise.
	* wcsmbs/wcrtomb.c: Likewise.
	* wcsmbs/wcsmbsload.c: Likewise.
	* wcsmbs/wcsnrtombs.c: Likewise.
	* wcsmbs/wcsrtombs.c: Likewise.
	* wcsmbs/wctob.c: Likewise.
	* iconv/loop.c: New file.
	* iconv/skeleton.c: New file.

	* stdlib/mblen.c: Handle empty input string correctly.
	* stdlib/mbtowc.c: Likewise.

	* posix/getopt.c: Various cleanups.

	* sysdeps/arm/bits/setjmp.h: Add copyright text.
	* sysdeps/i386/bits/setjmp.h: Likewise.
	* sysdeps/m68k/bits/setjmp.h: Likewise.
	* sysdeps/powerpc/bits/setjmp.h: Likewise.
	* sysdeps/sparc/sparc32/bits/setjmp.h: Likewise.

	* sysdeps/generic/longjmp.c: Rename function to __libc_siglongjmp
	and make longjmp weak alias.

1998-04-18 20:29  Philip Blundell  <Philip.Blundell@pobox.com>

	* iconv/Makefile (routines): Only include gconv_dl if building for
	an ELF system - dynamic linking is not available on a.out.
	(CFLAGS-gconv_conf.c): Define STATIC_GCONV if omitting gconv_dl
	due to above check.
	* iconv/gconv_db.c: If STATIC_GCONV defined, don't try to call
	routines from gconv_dl.

1998-04-17  Gordon Matzigkeit  <gord@profitpress.com>

	* csu/init.c (_IO_stdin_used): Protect with USE_IN_LIBIO so that
	we can compile without libio.

1998-04-20 16:28  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/mach/hurd/Subdirs: Remove login.

1998-04-11  Gordon Matzigkeit  <gord@profitpress.com>

	* db2/compat.h: Include <errno.h>, to make sure we get the
	definition of EFTYPE before we define it ourselves.

1998-04-10  Gordon Matzigkeit  <gord@profitpress.com>

	* sysdeps/generic/bits/socket.h: Protect against multiple inclusion.
	* sysdeps/mach/hurd/bits/ioctls.h: Likewise.
	Fix typo to allow inclusion from sys/ioctl.h again.

1998-04-16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* iconvdata/*.[ch]: Clean up namespace.  Optimize character lookup.

1998-04-16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libc.map: Export __strerror_r.  Remove _strerror_internal.

1998-04-16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/generic/strcasestr.c: Undefine strcasestr, not strstr.
	Also undefine __strcasestr.

1998-04-16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* posix/regex.c: Rename __re_max_failures back to re_max_failures,
	aliases do not work with global variables due to copy relocations.

1998-04-20 15:12  Ulrich Drepper  <drepper@cygnus.com>

	* manual/creature.texi: Fix type.  Patch by Andreas Schwab.

1998-04-20 13:47  Ulrich Drepper  <drepper@cygnus.com>

	* signal/sighold.c: Include stddef.h for NULL definition.
	* signal/sigrelse.c: Likewise.
	* sysdeps/posix/sigignore.c: Likewise.
	* sysdeps/posix/sigset.c: Likewise.
	* sysdeps/posix/waitid.c: Likewise.
	* sysdeps/unix/sysv/linux/rt_sigsuspend.c: Likewise.
	* sysdeps/unix/sysv/linux/rt_sigtimedwait.c: Likewise.
	* sysdeps/unix/sysv/linux/sigwaitinfo.c: Likewise.
	* wcsmbs/mbsrtowcs.c: Include stdlib.h for MB_CUR_MAX.
	Patch by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>.

1998-04-13  Mark Kettenis  <kettenis@phys.uva.nl>

	* login/Makefile (headers): Remove utmpx.h and bits/utmpx.h.
	* login/getutent.c (getutxent): Remove alias.
	* login/getutent_r.c (setutxent, pututxline, endutxent):
	Remove aliases.
	* login/getutid.c (getutxid): Remove alias.
	* login/getutline.c (getutxline): Remove alias.
	* login/utmp.h: Add prototypes for __updwtmp, __getutent,
	__getutid, __getutline and __pututline.
	* login/utmpx.h: Moved to ...
	* sysdeps/gnu/utmpx.h: ... here.  [__USE_GNU]: Define UTMPX_FILE,
	UTMPX_FILENAME, WTMPX_FILE and WTMPX_FILENAME, declare utmpxname
	and updwtmpx.
	* login/updwtmp.c: Moved to ...
	* sysdeps/generic/updwtmp.c: ... here.  (updwtmp): Generalized by
	allowing file name transformation.
	* sysdeps/gnu/updwtmp.c: New file.  Use generic implementation with
	additional file name transformation.
	* sysdeps/unix/sysv/linux/updwtmp.c: Likewise.
	* login/utmp_file.c: Moved to ...
	* sysdeps/generic/utmp_file.c: ... here.  (setutent_file):
	Generalized by allowing file name transformation.  Do not
	print error message.  Library functions should not print them.
	Reported by Jim Meyering.
	* sysdeps/gnu/utmp_file.c: New file.  Use generic implementation
	with additional file name transformation.
	* sysdeps/unix/sysv/linux/utmp_file.c: Likewise.
	* sysdeps/gnu/Makefile [$(subdir)=login] (sysdep_routines): Add
	setutxent, getutxent, endutxent, getutxid, getutxid, getutxline,
	pututxline, utmpxname and updwtmpx.  (sysdep_headers): Add utmpx.h
	and bits/utmpx.h.
	* sysdeps/gnu/bits/utmpx.h [__USE_GNU] Include paths.h.
	(_PATH_UTMPX): Define to _PATH_UTMP.  (_PATH_WTMPX): Define to
	_PATH_WTMPX.  (RUN_LVL): Define only if __USE_GNU.  (ACCOUNTING):
	Define if __USE_GNU.
	* sysdeps/gnu/setutxent.c: New file.
	* sysdeps/gnu/getutxent.c: New file.
	* sysdeps/gnu/endutxent.c: New file.
	* sysdeps/gnu/getutxid.c: New file.
	* sysdeps/gnu/getutxline.c: New file.
	* sysdeps/gnu/pututxline.c: New file.
	* sysdeps/gnu/utmpxname.c: New file.
	* sysdeps/gnu/updwtmpx.c: New file.
	* sysdeps/unix/sysv/linux/paths.h (_PATH_UTMP_DB): Remove.
	* sysdeps/generic/bits/utmpx.h: Remove.

1998-04-20  Ulrich Drepper  <drepper@cygnus.com>

	* posix/wordexp-test.c (main): Initialize ifs element of ts for
	~root test.

1998-04-17 07:53  H.J. Lu  <hjl@gnu.org>

	* sysdeps/unix/sysv/linux/i386/s_pread64.S: Fix a typo.

1998-04-17 11:32  Ulrich Drepper  <drepper@cygnus.com>

	* libio/oldfileops.c (_IO_old_file_seekoff): Define temporary st
	variable using _G_stat64.
	* libio/fileops.c: Remove macro definition of fstat, it is in the
	global header.
	Reported by Thorsten Kukuk <kukuk@weber.uni-paderborn.de>.

1998-04-17  Philip Blundell  <pb@nexus.co.uk>

	* sysdeps/arm/strlen.S: New file, based on code by Matthew Wilcox
	<willy@odie.barnet.ac.uk>.

1998-04-16  Philip Blundell  <Philip.Blundell@pobox.com>

	* inet/netinet/in.h (IN6_IS_ADDR_MC_NODELOCAL): New macro,
	required by IPv6 Basic API.
	(IN6_IS_ADDR_MC_LINKLOCAL): Likewise.
	(IN6_IS_ADDR_MC_SITELOCAL): Likewise.
	(IN6_IS_ADDR_MC_ORGLOCAL): Likewise.
	(IN6_IS_ADDR_MC_GLOBAL): Likewise.
Diffstat (limited to 'iconvdata')
-rw-r--r--iconvdata/8bit-gap.c255
-rw-r--r--iconvdata/8bit-generic.c236
-rw-r--r--iconvdata/Makefile6
-rw-r--r--iconvdata/big5.c451
-rw-r--r--iconvdata/cns11643.c6
-rw-r--r--iconvdata/cns11643.h220
-rw-r--r--iconvdata/cns11643l1.c30
-rw-r--r--iconvdata/cns11643l1.h210
-rw-r--r--iconvdata/ebcdic-at-de-a.c11
-rw-r--r--iconvdata/ebcdic-at-de.c11
-rw-r--r--iconvdata/ebcdic-ca-fr.c11
-rw-r--r--iconvdata/euccn.c376
-rw-r--r--iconvdata/eucjp.c480
-rw-r--r--iconvdata/euckr.c377
-rw-r--r--iconvdata/euctw.c459
-rw-r--r--iconvdata/gb2312.c20
-rw-r--r--iconvdata/gb2312.h251
-rw-r--r--iconvdata/hp-roman8.c11
-rw-r--r--iconvdata/iso646.c12
-rw-r--r--iconvdata/iso6937.c464
-rw-r--r--iconvdata/iso8859-1.c217
-rw-r--r--iconvdata/iso8859-10.c10
-rw-r--r--iconvdata/iso8859-2.c10
-rw-r--r--iconvdata/iso8859-3.c10
-rw-r--r--iconvdata/iso8859-4.c10
-rw-r--r--iconvdata/iso8859-5.c10
-rw-r--r--iconvdata/iso8859-6.c10
-rw-r--r--iconvdata/iso8859-7.c10
-rw-r--r--iconvdata/iso8859-8.c10
-rw-r--r--iconvdata/iso8859-9.c10
-rw-r--r--iconvdata/jis0201.c6
-rw-r--r--iconvdata/jis0201.h8
-rw-r--r--iconvdata/jis0208.c16
-rw-r--r--iconvdata/jis0208.h34
-rw-r--r--iconvdata/jis0212.c13
-rw-r--r--iconvdata/jis0212.h32
-rw-r--r--iconvdata/johab.c546
-rw-r--r--iconvdata/koi-8.c10
-rw-r--r--iconvdata/koi8-r.c11
-rw-r--r--iconvdata/ksc5601.c12
-rw-r--r--iconvdata/ksc5601.h53
-rw-r--r--iconvdata/latin-greek-1.c9
-rw-r--r--iconvdata/latin-greek.c9
-rwxr-xr-xiconvdata/run-iconv-test.sh10
-rw-r--r--iconvdata/sjis.c407
-rw-r--r--iconvdata/t61.c370
-rw-r--r--iconvdata/uhc.c448
47 files changed, 2345 insertions, 3853 deletions
diff --git a/iconvdata/8bit-gap.c b/iconvdata/8bit-gap.c
index a8d3c99a68..4065a6d777 100644
--- a/iconvdata/8bit-gap.c
+++ b/iconvdata/8bit-gap.c
@@ -19,10 +19,7 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
 #include <stdint.h>
-#include <string.h>
-
 
 struct gap
 {
@@ -34,192 +31,68 @@ struct gap
 /* Now we can include the tables.  */
 #include TABLES
 
-/* We use three objects to describe the operation mode.  */
-static int from_8bit_object;
-static int to_8bit_object;
-
-
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, NAME) != NULL)
-    step->data = &from_8bit_object;
-  else if (strcasestr (step->to_name, NAME) != NULL)
-    step->data = &to_8bit_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_8bit_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  wchar_t ch = to_ucs4[((unsigned char *) inbuf)[cnt]];
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  const struct gap *rp = from_idx;
-		  unsigned int ch = *((wchar_t *) (inbuf + cnt));
-		  char res;
-
-		  while (ch > rp->end)
-		    ++rp;
-		  if (ch < rp->start)
-		    /* No valid character.  */
-		    break;
-
-		  res = from_ucs4[ch + rp->idx];
-		  if (res == '\0' && ch != 0)
-		    /* No valid character.  */
-		    break;
-
-		  outbuf[outchars] = res;
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_8bit_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
 
-  return result;
-}
+#define FROM_LOOP		from_gap
+#define TO_LOOP			to_gap
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MIN_NEEDED_TO		4
+
+
+/* First define the conversion function from the 8bit charset to UCS4.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY \
+  {									      \
+    uint32_t ch = to_ucs4[*inptr];					      \
+									      \
+    if (HAS_HOLES && ch == L'\0' && *inptr != '\0')			      \
+      {									      \
+	/* This is an illegal character.  */				      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+    ++inptr;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+#define LOOPFCT			TO_LOOP
+#define BODY \
+  {									      \
+    const struct gap *rp = from_idx;					      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    unsigned char res;							      \
+									      \
+    while (ch > rp->end)						      \
+      ++rp;								      \
+    if (ch < rp->start)							      \
+      {									      \
+	/* This is an illegal character.  */				      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    res = from_ucs4[ch + rp->idx];					      \
+    if (ch != 0 && res == '\0')						      \
+      {									      \
+	/* This is an illegal character.  */				      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *outptr++ = res;							      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/8bit-generic.c b/iconvdata/8bit-generic.c
index 19194ad068..2ea333199e 100644
--- a/iconvdata/8bit-generic.c
+++ b/iconvdata/8bit-generic.c
@@ -18,186 +18,56 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
-#include <string.h>
-
-/* We use three objects to describe the operation mode.  */
-static int from_8bit_object;
-static int to_8bit_object;
-
-
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, NAME) != NULL)
-    step->data = &from_8bit_object;
-  else if (strcasestr (step->to_name, NAME) != NULL)
-    step->data = &to_8bit_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_8bit_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  wchar_t ch = to_ucs4[((unsigned char *) inbuf)[cnt]];
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  int ch = *((wchar_t *) (inbuf + cnt));
-
-		  if (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0])
-		      || ch < 0 || (from_ucs4[ch] == '\0' && ch != 0))
-		    break;
-
-		  outbuf[outchars] = from_ucs4[ch];
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_8bit_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
-
-  return result;
-}
+#define FROM_LOOP		from_generic
+#define TO_LOOP			to_generic
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MIN_NEEDED_TO		4
+
+
+/* First define the conversion function from the 8bit charset to UCS4.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY \
+  {									      \
+    uint32_t ch = to_ucs4[*inptr];					      \
+									      \
+    if (HAS_HOLES && ch == L'\0' && *inptr != '\0')			      \
+      {									      \
+	/* This is an illegal character.  */				      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+    ++inptr;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+#define LOOPFCT			TO_LOOP
+#define BODY \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+									      \
+    if (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0])		      \
+	|| (ch != 0 && from_ucs4[ch] == '\0'))				      \
+      {									      \
+	/* This is an illegal character.  */				      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *outptr++ = from_ucs4[ch];						      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/Makefile b/iconvdata/Makefile
index dd1c391c6c..69576859ec 100644
--- a/iconvdata/Makefile
+++ b/iconvdata/Makefile
@@ -26,8 +26,8 @@ modules	:= ISO8859-1 ISO8859-2 ISO8859-3 ISO8859-4 ISO8859-5		\
 	   ISO8859-6 ISO8859-7 ISO8859-8 ISO8859-9 ISO8859-10		\
 	   T.61 ISO_6937 SJIS KOI-8 KOI8-R LATIN-GREEK LATIN-GREEK-1	\
 	   HP-ROMAN8 EBCDIC-AT-DE EBCDIC-AT-DE-A EBCDIC-CA-FR		\
-	   EUC-KR UHC JOHAB libJIS libKSC ISO646 BIG5 EUC-JP libGB	\
-	   EUC-CN libCNS EUC-TW
+	   EUC-KR UHC JOHAB libJIS libKSC BIG5 EUC-JP libGB		\
+	   EUC-CN libCNS EUC-TW # ISO646
 modules.so := $(addsuffix .so, $(modules))
 
 
@@ -211,7 +211,7 @@ endif
 include ../Rules
 
 .PHONY: do-iconv-test
-tests: do-iconv-test
+#tests: do-iconv-test
 
 do-iconv-test: run-iconv-test.sh $(objpfx)gconv-modules \
 	       $(addprefix $(objpfx),$(modules.so)) \
diff --git a/iconvdata/big5.c b/iconvdata/big5.c
index a6a2580dd7..2962712167 100644
--- a/iconvdata/big5.c
+++ b/iconvdata/big5.c
@@ -8411,289 +8411,180 @@ static const char from_ucs4_tab13[][2] =
 };
 
 
-/* Direction of the transformation.  */
-static int to_big5_object;
-static int from_big5_object;
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"BIG5"
+#define FROM_LOOP		from_big5
+#define TO_LOOP			to_big5
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		2
+#define MIN_NEEDED_TO		4
 
 
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "BIG5") != NULL)
-    step->data = &from_big5_object;
-  else if (strcasestr (step->to_name, "BIG5") != NULL)
-    step->data = &to_big5_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_big5_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = inbuf[cnt];
-		  wchar_t ch;
-
-		  if (inchar < '\xa1' || inchar > '\xfe')
-		    ch = (wchar_t) inchar;
-		  else
-		    {
-		      /* Two-byte character.  First test whether the next
-			 character is also available.  */
-		      int inchar2;
-		      int idx;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      idx = (inchar - 0xa1) * 157;
-		      inchar2 = inbuf[++cnt];
-		      /* See whether the second byte is in the correct
-			 range.  */
-		      if (inchar2 >= '\x40' && inchar2 <= '\x7e')
-			idx += inchar2 - 0x40;
-		      else if (inchar2 >= '\xa1' && inchar2 <= '\xfe')
-			idx += 0x3f + (inchar2 - 0xa1);
-		      else
-			{
-			  /* This is illegal.  */
-			  --cnt;
-			  result  = GCONV_ILLEGAL_INPUT;
-			  break;
-			}
-
-		      /* Get the value from the table.  */
-		      ch = big5_to_ucs[idx];
-
-		      if (ch == L'\0')
-			--cnt;
-		    }
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  int ch = *((wchar_t *) (inbuf + cnt));
-		  char buf[2];
-		  const char *cp;
-
-		  if (ch >= (sizeof (from_ucs4_tab1)
-			     / sizeof (from_ucs4_tab1[0])))
-		    {
-		      if (ch >= 0x2c7 && ch <= 0x2d9)
-			cp = from_ucs4_tab2[ch - 0x2c7];
-		      else if (ch >= 0x391 && ch <= 0x451)
-			cp = from_ucs4_tab3[ch - 0x391];
-		      else if (ch >= 0x2013 && ch <= 0x203e)
-			cp = from_ucs4_tab4[ch - 0x2013];
-		      else if (ch == 0x2103)
-			cp = "\xa2\x4a";
-		      else if (ch == 0x2105)
-			cp = "\xa1\xc1";
-		      else if (ch == 0x2109)
-			cp = "\xa2\x4b";
-		      else if (ch >= 0x2160 && ch <= 0x2169)
-			{
-			  buf[0] = '\xa2';
-			  buf[1] = '\xb9' + (ch - 0x2160);
-			  cp = buf;
-			}
-		      else if (ch >= 0x2190 && ch <= 0x2199)
-			cp = from_ucs4_tab5[ch - 0x2190];
-		      else if (ch >= 0x221a && ch <= 0x22bf)
-			cp = from_ucs4_tab6[ch - 0x221a];
-		      else if (ch >= 0x2460 && ch <= 0x247d)
-			cp = from_ucs4_tab7[ch - 0x2460];
-		      else if (ch >= 0x2500 && ch <= 0x2642)
-			cp = from_ucs4_tab8[ch - 0x2500];
-		      else if (ch >= 0x3000 && ch <= 0x3129)
-			cp = from_ucs4_tab9[ch - 0x3000];
-		      else if (ch == 0x32a3)
-			cp = "\xa1\xc0";
-		      else if (ch >= 0x338e && ch <= 0x33d5)
-			cp = from_ucs4_tab10[ch - 0x338e];
-		      else if (ch >= 0x4e00 && ch <= 0x9fa4)
-			cp = from_ucs4_tab11[ch - 0x4e00];
-		      else if (ch == 0xfa0c)
-			cp = "\xc9\x4a";
-		      else if (ch == 0xfa0d)
-			cp = "\xdd\xfc";
-		      else if (ch >= 0xfe30 && ch <= 0xfe6b)
-			cp = from_ucs4_tab12[ch - 0xfe30];
-		      else if (ch >= 0xff01 && ch <= 0xff64)
-			cp = from_ucs4_tab13[ch - 0xff01];
-		      else
-			/* Illegal character.  */
-			break;
-		    }
-		  else
-		    cp = from_ucs4_tab1[ch];
-
-		  if (cp[0] == '\0' && ch != 0)
-		    /* Illegal character.  */
-		    break;
-
-		  outbuf[outchars] = cp[0];
-		  /* Now test for a possible second byte and write this
-		     if possible.  */
-		  if (cp[1] != '\0')
-		    {
-		      if (outchars + 1 >= data->outbufsize)
-			{
-			  /* The result does not fit into the buffer.  */
-			  extra = 1;
-			  break;
-			}
-		      outbuf[++outchars] = cp[1];
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_big5_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
+/* First define the conversion function from Big5 to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = *inptr;						      \
+									      \
+    if (ch >= '\xa1' && ch <= '\xff')					      \
+      {									      \
+	/* Two-byte character.  First test whether the next character	      \
+	   is also available.  */					      \
+	uint32_t ch2;							      \
+	int idx;							      \
+									      \
+	if (NEED_LENGTH_TEST && inptr + 1 >= inend)			      \
+	  {								      \
+	    /* The second character is not available.  */		      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	idx = (ch - 0xa1) * 157;					      \
+	ch2 = inptr[1];							      \
+	/* See whether the second byte is in the correct range.  */	      \
+	if (ch2 >= '\x40' && ch2 <= '\x7e')				      \
+	  idx += ch2 - 0x40;						      \
+	else if (ch2 >= '\xa1' && ch2 <= '\xfe')			      \
+	  idx += 0x3f + (ch2 - 0xa1);					      \
+	else								      \
+	  {								      \
+	    /* This is illegal.  */					      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	/* Get the value from the table.  */				      \
+	ch = big5_to_ucs[idx];						      \
+									      \
+	/* Is this character defined?  */				      \
+	if (ch == L'\0' && *inptr != '\0')				      \
+	  {								      \
+	    /* This is an illegal character.  */			      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	inptr += 2;							      \
+      }									      \
+    else								      \
+      ++inptr;								      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
 
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
 
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    char buf[2];							      \
+    const char *cp;							      \
+									      \
+    if (ch >= sizeof (from_ucs4_tab1) / sizeof (from_ucs4_tab1[0]))	      \
+      switch (ch)							      \
+	{								      \
+        case 0x2c7 ... 0x2d9:						      \
+	  cp = from_ucs4_tab2[ch - 0x2c7];				      \
+	  break;							      \
+	case 0x391 ... 0x451:						      \
+	  cp = from_ucs4_tab3[ch - 0x391];				      \
+	  break;							      \
+	case 0x2013 ... 0x203e:						      \
+	  cp = from_ucs4_tab4[ch - 0x2013];				      \
+	  break;							      \
+	case 0x2103:							      \
+	  cp = "\xa2\x4a";						      \
+	  break;							      \
+	case 0x2105:							      \
+	  cp = "\xa1\xc1";						      \
+	  break;							      \
+	case 0x2109:							      \
+	  cp = "\xa2\x4b";						      \
+	  break;							      \
+	case 0x2160 ... 0x2169:						      \
+	  {								      \
+	    buf[0] = '\xa2';						      \
+	    buf[1] = '\xb9' + (ch - 0x2160);				      \
+	    cp = buf;							      \
+	  }								      \
+	  break;							      \
+	case 0x2190 ... 0x2199:						      \
+	  cp = from_ucs4_tab5[ch - 0x2190];				      \
+	  break;							      \
+	case 0x221a ...	0x22bf:						      \
+	  cp = from_ucs4_tab6[ch - 0x221a];				      \
+	  break;							      \
+	case 0x2460 ... 0x247d:						      \
+	  cp = from_ucs4_tab7[ch - 0x2460];				      \
+	  break;							      \
+	case 0x2500 ... 0x2642:						      \
+	  cp = from_ucs4_tab8[ch - 0x2500];				      \
+	  break;							      \
+	case 0x3000 ... 0x3129:						      \
+	  cp = from_ucs4_tab9[ch - 0x3000];				      \
+	  break;							      \
+	case 0x32a3:							      \
+	  cp = "\xa1\xc0";						      \
+	  break;							      \
+	case 0x338e ... 0x33d5:						      \
+	  cp = from_ucs4_tab10[ch - 0x338e];				      \
+	  break;							      \
+	case 0x4e00 ... 0x9fa4:						      \
+	  cp = from_ucs4_tab11[ch - 0x4e00];				      \
+	  break;							      \
+	case 0xfa0c:							      \
+	  cp = "\xc9\x4a";						      \
+	  break;							      \
+	case 0xfa0d:							      \
+	  cp = "\xdd\xfc";						      \
+	  break;							      \
+	case 0xfe30 ... 0xfe6b:						      \
+	  cp = from_ucs4_tab12[ch - 0xfe30];				      \
+	  break;							      \
+	case 0xff01 ... 0xff64:						      \
+	  cp = from_ucs4_tab13[ch - 0xff01];				      \
+	  break;							      \
+	default:							      \
+	  /* Illegal character.  */					      \
+	  cp = "";							      \
+	  break;							      \
+	}								      \
+    else								      \
+      cp = from_ucs4_tab1[ch];						      \
+									      \
+    if (cp[0] == '\0' && ch != 0)					      \
+      {									      \
+	/* Illegal character.  */					      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    /* See whether there is enough room for the second byte we write.  */     \
+    if (NEED_LENGTH_TEST && cp[1] != '\0' && outptr + 1 >= outend)	      \
+      {									      \
+	/* We have not enough room.  */					      \
+	result = GCONV_FULL_OUTPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *outptr++ = cp[0];							      \
+    if (cp[1] != '\0')							      \
+      *outptr++ = cp[1];						      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
 
-  if (written != NULL && data->is_last)
-    *written = do_write;
 
-  return result;
-}
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/cns11643.c b/iconvdata/cns11643.c
index 903548261b..bd1994f1d9 100644
--- a/iconvdata/cns11643.c
+++ b/iconvdata/cns11643.c
@@ -44,7 +44,7 @@
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const uint16_t cns11643l2_to_ucs4_tab[] =
+const uint16_t __cns11643l2_to_ucs4_tab[] =
 {
   [0x0000] = 0x4e42, [0x0001] = 0x4e5c, [0x0002] = 0x51f5, [0x0003] = 0x531a,
   [0x0004] = 0x5382, [0x0005] = 0x4e07, [0x0006] = 0x4e0c, [0x0007] = 0x4e47,
@@ -1985,7 +1985,7 @@ const uint16_t cns11643l2_to_ucs4_tab[] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const uint16_t cns11643l14_to_ucs4_tab[] =
+const uint16_t __cns11643l14_to_ucs4_tab[] =
 {
   [0x0000] = 0x4e28, [0x0001] = 0x4e36, [0x0002] = 0x4e3f, [0x0003] = 0x4e85,
   [0x0004] = 0x4e05, [0x0005] = 0x4e04, [0x0006] = 0x5182, [0x0007] = 0x5196,
@@ -3064,7 +3064,7 @@ const uint16_t cns11643l14_to_ucs4_tab[] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643_from_ucs4_tab[][3] =
+const char __cns11643_from_ucs4_tab[][3] =
 {
   [0x0000] = "\x01\x44\x21", [0x0001] = "\x01\x44\x23",
   [0x0003] = "\x01\x44\x24", [0x0004] = "\x0e\x21\x26",
diff --git a/iconvdata/cns11643.h b/iconvdata/cns11643.h
index f791d4cdb3..ccab8011ce 100644
--- a/iconvdata/cns11643.h
+++ b/iconvdata/cns11643.h
@@ -21,8 +21,8 @@
 #include <stdint.h>
 
 /* Table for CNS 11643, plane 2 to UCS4 conversion.  */
-extern const uint16_t cns11643l2_to_ucs4_tab[];
-extern const uint16_t cns11643l14_to_ucs4_tab[];
+extern const uint16_t __cns11643l2_to_ucs4_tab[];
+extern const uint16_t __cns11643l14_to_ucs4_tab[];
 
 
 static inline wchar_t
@@ -54,19 +54,19 @@ cns11643_to_ucs4 (const char **s, size_t avail, unsigned char offset)
     {
       if (idx > 0x2196)
 	return UNKNOWN_10646_CHAR;
-      result = cns11643l1_to_ucs4_tab[idx];
+      result = __cns11643l1_to_ucs4_tab[idx];
     }
   else if ((ch - 0x21 - offset) == 2)
     {
       if (idx > 0x1de1)
 	return UNKNOWN_10646_CHAR;
-      result = cns11643l2_to_ucs4_tab[idx];
+      result = __cns11643l2_to_ucs4_tab[idx];
     }
   else if ((ch - 0x21 - offset) == 0xe)
     {
       if (idx > 0x19bd)
 	return UNKNOWN_10646_CHAR;
-      result = cns11643l14_to_ucs4_tab[idx];
+      result = __cns11643l14_to_ucs4_tab[idx];
     }
   else
     return UNKNOWN_10646_CHAR;
@@ -81,21 +81,21 @@ cns11643_to_ucs4 (const char **s, size_t avail, unsigned char offset)
 
 
 /* Tables for the UCS4 -> CNS conversion.  */
-extern const char cns11643l1_from_ucs4_tab1[][2];
-extern const char cns11643l1_from_ucs4_tab2[][2];
-extern const char cns11643l1_from_ucs4_tab3[][2];
-extern const char cns11643l1_from_ucs4_tab4[][2];
-extern const char cns11643l1_from_ucs4_tab5[][2];
-extern const char cns11643l1_from_ucs4_tab6[][2];
-extern const char cns11643l1_from_ucs4_tab7[][2];
-extern const char cns11643l1_from_ucs4_tab8[][2];
-extern const char cns11643l1_from_ucs4_tab9[][2];
-extern const char cns11643l1_from_ucs4_tab10[][2];
-extern const char cns11643l1_from_ucs4_tab11[][2];
-extern const char cns11643l1_from_ucs4_tab12[][2];
-extern const char cns11643l1_from_ucs4_tab13[][2];
-extern const char cns11643l1_from_ucs4_tab14[][2];
-extern const char cns11643_from_ucs4_tab[][3];
+extern const char __cns11643l1_from_ucs4_tab1[][2];
+extern const char __cns11643l1_from_ucs4_tab2[][2];
+extern const char __cns11643l1_from_ucs4_tab3[][2];
+extern const char __cns11643l1_from_ucs4_tab4[][2];
+extern const char __cns11643l1_from_ucs4_tab5[][2];
+extern const char __cns11643l1_from_ucs4_tab6[][2];
+extern const char __cns11643l1_from_ucs4_tab7[][2];
+extern const char __cns11643l1_from_ucs4_tab8[][2];
+extern const char __cns11643l1_from_ucs4_tab9[][2];
+extern const char __cns11643l1_from_ucs4_tab10[][2];
+extern const char __cns11643l1_from_ucs4_tab11[][2];
+extern const char __cns11643l1_from_ucs4_tab12[][2];
+extern const char __cns11643l1_from_ucs4_tab13[][2];
+extern const char __cns11643l1_from_ucs4_tab14[][2];
+extern const char __cns11643_from_ucs4_tab[][3];
 
 
 static inline size_t
@@ -103,120 +103,104 @@ ucs4_to_cns11643 (wchar_t wch, char *s, size_t avail)
 {
   unsigned int ch = (unsigned int) wch;
   char buf[2];
-  const char *cp = NULL;
+  const char *cp = buf;
   int needed = 2;
 
-  if (ch < 0xa7)
-    cp = "";
-  else if (ch < 0xf7)
-    cp = cns11643l1_from_ucs4_tab1[ch - 0xa7];
-  else if (ch < 0x2c7)
-    cp = "";
-  else if (ch <= 0x2d9)
-    cp = cns11643l1_from_ucs4_tab2[ch - 0x2c7];
-  else if (ch < 0x391)
-    cp = "";
-  else if (ch <= 0x3c9)
-    cp = cns11643l1_from_ucs4_tab3[ch - 0x391];
-  else if (ch < 0x2013)
-    cp = "";
-  else if (ch <= 0x203e)
-    cp = cns11643l1_from_ucs4_tab4[ch - 0x2013];
-  else if (ch == 0x2103)
-    cp = "\x22\x6a";
-  else if (ch == 0x2105)
-    cp = "\x22\x22";
-  else if (ch == 0x2109)
-    cp = "\x22\x6b";
-  else if (ch < 0x2160)
-    cp = "";
-  else if (ch <= 0x2169)
+  switch (ch)
     {
+    case 0xa7 ... 0xf7:
+      cp = __cns11643l1_from_ucs4_tab1[ch - 0xa7];
+      break;
+    case 0x2c7 ... 0x2d9:
+      cp = __cns11643l1_from_ucs4_tab2[ch - 0x2c7];
+      break;
+    case 0x391 ... 0x3c9:
+      cp = __cns11643l1_from_ucs4_tab3[ch - 0x391];
+      break;
+    case 0x2013 ... 0x203e:
+      cp = __cns11643l1_from_ucs4_tab4[ch - 0x2013];
+      break;
+    case 0x2103:
+      cp = "\x22\x6a";
+      break;
+    case 0x2105:
+      cp = "\x22\x22";
+      break;
+    case 0x2109:
+      cp = "\x22\x6b";
+      break;
+    case 0x2160 ...0x2169:
       buf[0] = '\x24';
       buf[1] = '\x2b' + (ch - 0x2160);
-      cp = buf;
-    }
-  else if (ch < 0x2170)
-    cp = "";
-  else if (ch <= 0x2179)
-    {
+      break;
+    case 0x2170 ... 0x2179:
       buf[0] = '\x26';
       buf[1] = '\x35' + (ch - 0x2170);
-      cp = buf;
-    }
-  else if (ch < 0x2190)
-    cp = "";
-  else if (ch <= 0x2199)
-    cp = cns11643l1_from_ucs4_tab5[ch - 0x2190];
-  else if (ch < 0x2215)
-    cp = "";
-  else if (ch <= 0x2267)
-    cp = cns11643l1_from_ucs4_tab6[ch - 0x2215];
-  else if (ch == 0x22a5)
-    cp = "\x22\x47";
-  else if (ch == 0x22bf)
-    cp = "\x22\x4a";
-  else if (ch < 0x2400)
-    cp = "";
-  else if (ch <= 0x2421)
-    cp = cns11643l1_from_ucs4_tab7[ch - 0x2400];
-  else if (ch < 0x2460)
-    cp = "";
-  else if (ch <= 0x247d)
-    cp = cns11643l1_from_ucs4_tab8[ch - 0x2460];
-  else if (ch < 0x2500)
-    cp = "";
-  else if (ch <= 0x2642)
-    cp = cns11643l1_from_ucs4_tab9[ch - 0x2500];
-  else if (ch < 0x3000)
-    cp = "";
-  else if (ch <= 0x3029)
-    cp = cns11643l1_from_ucs4_tab10[ch - 0x3000];
-  else if (ch == 0x30fb)
-    cp = "\x21\x26";
-  else if (ch < 0x3105)
-    cp = "";
-  else if (ch <= 0x3129)
-    {
+      break;
+    case 0x2190 ... 0x2199:
+      cp = __cns11643l1_from_ucs4_tab5[ch - 0x2190];
+      break;
+    case 0x2215 ... 0x2267:
+      cp = __cns11643l1_from_ucs4_tab6[ch - 0x2215];
+      break;
+    case 0x22a5:
+      cp = "\x22\x47";
+      break;
+    case 0x22bf:
+      cp = "\x22\x4a";
+      break;
+    case 0x2400 ... 0x2421:
+      cp = __cns11643l1_from_ucs4_tab7[ch - 0x2400];
+      break;
+    case 0x2460 ... 0x247d:
+      cp = __cns11643l1_from_ucs4_tab8[ch - 0x2460];
+      break;
+    case 0x2500 ... 0x2642:
+      cp = __cns11643l1_from_ucs4_tab9[ch - 0x2500];
+    case 0x3000 ... 0x3029:
+      cp = __cns11643l1_from_ucs4_tab10[ch - 0x3000];
+      break;
+    case 0x30fb:
+      cp = "\x21\x26";
+      break;
+    case 0x3105 ... 0x3129:
       buf[0] = '\x25';
       buf[1] = '\x26' + (ch - 0x3105);
-      cp = buf;
-    }
-  else if (ch == 0x32a3)
-    cp = "\x22\x21";
-  else if (ch < 0x338e)
-    cp = "";
-  else if (ch <= 0x33d5)
-    cp = cns11643l1_from_ucs4_tab11[ch - 0x338e];
-  else if (ch < 0x4e00)
-    cp = "";
-  else if (ch <= 0x9f9c)
-    {
-      cp = cns11643l1_from_ucs4_tab12[ch - 0x4e00];
+      break;
+    case 0x32a3:
+      cp = "\x22\x21";
+      break;
+    case 0x338e ... 0x33d5:
+      cp = __cns11643l1_from_ucs4_tab11[ch - 0x338e];
+      break;
+    case 0x4e00 ... 0x9f9c:
+      cp = __cns11643l1_from_ucs4_tab12[ch - 0x4e00];
 
       if (cp[0] == '\0')
 	{
 	  /* Let's try the other planes.  */
 	  needed = 3;
-	  cp = cns11643_from_ucs4_tab[ch - 0x4e00];
+	  cp = __cns11643_from_ucs4_tab[ch - 0x4e00];
 	}
+      break;
+    case 0xfe30 ... 0xfe6b:
+      cp = __cns11643l1_from_ucs4_tab13[ch - 0xfe30];
+      break;
+    case 0xff01 ... 0xff5d:
+      cp = __cns11643l1_from_ucs4_tab14[ch - 0xff01];
+      break;
+    case 0xffe0:
+      cp = "\x22\x66";
+      break;
+    case 0xffe1:
+      cp = "\x22\x67";
+      break;
+    case 0xffe5:
+      cp = "\x22\x64";
+      break;
+    default:
+      cp = "";
     }
-  else if (ch < 0xfe30)
-    cp = "";
-  else if (ch <= 0xfe6b)
-    cp = cns11643l1_from_ucs4_tab13[ch - 0xfe30];
-  else if (ch < 0xff01)
-    cp = "";
-  else if (ch <= 0xff5d)
-    cp = cns11643l1_from_ucs4_tab14[ch - 0xff01];
-  else if (ch == 0xffe0)
-    cp = "\x22\x66";
-  else if (ch == 0xffe1)
-    cp = "\x22\x67";
-  else if (ch == 0xffe5)
-    cp = "\x22\x64";
-  else
-    cp = "";
 
   if (cp[0] == '\0')
     return UNKNOWN_10646_CHAR;
diff --git a/iconvdata/cns11643l1.c b/iconvdata/cns11643l1.c
index 730fb550ab..d106b3d34c 100644
--- a/iconvdata/cns11643l1.c
+++ b/iconvdata/cns11643l1.c
@@ -45,7 +45,7 @@
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const uint16_t cns11643l1_to_ucs4_tab[] =
+const uint16_t __cns11643l1_to_ucs4_tab[] =
 {
   [0x0000] = 0x3000, [0x0001] = 0xff0c, [0x0002] = 0x3001, [0x0003] = 0x3002,
   [0x0004] = 0xff0e, [0x0005] = 0x30fb, [0x0006] = 0xff1b, [0x0007] = 0xff1a,
@@ -1517,7 +1517,7 @@ const uint16_t cns11643l1_to_ucs4_tab[] =
 
 
 /* Some Latin1 characters, starting at U+00a7.  */
-const char cns11643l1_from_ucs4_tab1[][2] =
+const char __cns11643l1_from_ucs4_tab1[][2] =
 {
   [0x00] = "\x21\x70", [0x09] = "\x22\x78", [0x0a] = "\x22\x34",
   [0x10] = "\x21\x31", [0x30] = "\x22\x32", [0x50] = "\x22\x33"
@@ -1525,7 +1525,7 @@ const char cns11643l1_from_ucs4_tab1[][2] =
 
 
 /* Some phonetic modifiers, starting at U+02c7.  */
-const char cns11643l1_from_ucs4_tab2[][2] =
+const char __cns11643l1_from_ucs4_tab2[][2] =
 {
   [0x00] = "\x25\x6f", [0x02] = "\x25\x6d", [0x03] = "\x25\x6e",
   [0x04] = "\x25\x70", [0x12] = "\x25\x6c"
@@ -1552,7 +1552,7 @@ const char cns11643l1_from_ucs4_tab2[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab3[][2] =
+const char __cns11643l1_from_ucs4_tab3[][2] =
 {
   [0x0000] = "\x24\x75", [0x0001] = "\x24\x76", [0x0002] = "\x24\x77",
   [0x0003] = "\x24\x78", [0x0004] = "\x24\x79", [0x0005] = "\x24\x7a",
@@ -1593,7 +1593,7 @@ const char cns11643l1_from_ucs4_tab3[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab4[][2] =
+const char __cns11643l1_from_ucs4_tab4[][2] =
 {
   [0x0000] = "\x21\x39", [0x0001] = "\x21\x37", [0x0003] = "\x22\x5d",
   [0x0005] = "\x21\x64", [0x0006] = "\x21\x65", [0x0009] = "\x21\x66",
@@ -1603,7 +1603,7 @@ const char cns11643l1_from_ucs4_tab4[][2] =
 };
 
 
-const char cns11643l1_from_ucs4_tab5[][2] =
+const char __cns11643l1_from_ucs4_tab5[][2] =
 {
   [0x00] = "\x22\x58", [0x01] = "\x22\x55", [0x02] = "\x22\x57",
   [0x03] = "\x22\x56", [0x06] = "\x22\x59", [0x07] = "\x22\x5a",
@@ -1631,7 +1631,7 @@ const char cns11643l1_from_ucs4_tab5[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab6[][2] =
+const char __cns11643l1_from_ucs4_tab6[][2] =
 {
   [0x0000] = "\x22\x61", [0x0005] = "\x22\x35", [0x0009] = "\x22\x3c",
   [0x000a] = "\x22\x49", [0x000b] = "\x22\x48", [0x0014] = "\x22\x45",
@@ -1661,7 +1661,7 @@ const char cns11643l1_from_ucs4_tab6[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab7[][2] =
+const char __cns11643l1_from_ucs4_tab7[][2] =
 {
   [0x0000] = "\x42\x21", [0x0001] = "\x42\x22", [0x0002] = "\x42\x23",
   [0x0003] = "\x42\x24", [0x0004] = "\x42\x25", [0x0005] = "\x42\x26",
@@ -1697,7 +1697,7 @@ const char cns11643l1_from_ucs4_tab7[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab8[][2] =
+const char __cns11643l1_from_ucs4_tab8[][2] =
 {
   [0x0000] = "\x26\x21", [0x0001] = "\x26\x22", [0x0002] = "\x26\x23",
   [0x0003] = "\x26\x24", [0x0004] = "\x26\x25", [0x0005] = "\x26\x26",
@@ -1729,7 +1729,7 @@ const char cns11643l1_from_ucs4_tab8[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab9[][2] =
+const char __cns11643l1_from_ucs4_tab9[][2] =
 {
   [0x0000] = "\x23\x39", [0x0002] = "\x23\x3a", [0x000c] = "\x23\x3c",
   [0x0010] = "\x23\x3d", [0x0014] = "\x23\x3e", [0x0018] = "\x23\x3f",
@@ -1774,7 +1774,7 @@ const char cns11643l1_from_ucs4_tab9[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab10[][2] =
+const char __cns11643l1_from_ucs4_tab10[][2] =
 {
   [0x0000] = "\x21\x21", [0x0001] = "\x21\x23", [0x0002] = "\x21\x24",
   [0x0003] = "\x21\x71", [0x0008] = "\x21\x52", [0x0009] = "\x21\x53",
@@ -1809,7 +1809,7 @@ const char cns11643l1_from_ucs4_tab10[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab11[][2] =
+const char __cns11643l1_from_ucs4_tab11[][2] =
 {
   [0x0000] = "\x22\x75", [0x0001] = "\x22\x76", [0x000e] = "\x22\x70",
   [0x000f] = "\x22\x71", [0x0010] = "\x22\x72", [0x0013] = "\x22\x74",
@@ -1838,7 +1838,7 @@ const char cns11643l1_from_ucs4_tab11[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab12[][2] =
+const char __cns11643l1_from_ucs4_tab12[][2] =
 {
   [0x0000] = "\x44\x21", [0x0001] = "\x44\x23", [0x0003] = "\x44\x24",
   [0x0008] = "\x44\x37", [0x0009] = "\x44\x35", [0x000a] = "\x44\x38",
@@ -3667,7 +3667,7 @@ const char cns11643l1_from_ucs4_tab12[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab13[][2] =
+const char __cns11643l1_from_ucs4_tab13[][2] =
 {
   [0x0000] = "\x21\x2b", [0x0001] = "\x21\x36", [0x0002] = "\x21\x38",
   [0x0005] = "\x21\x40", [0x0006] = "\x21\x41", [0x0007] = "\x21\x44",
@@ -3709,7 +3709,7 @@ const char cns11643l1_from_ucs4_tab13[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char cns11643l1_from_ucs4_tab14[][2] =
+const char __cns11643l1_from_ucs4_tab14[][2] =
 {
   [0x0000] = "\x21\x2a", [0x0002] = "\x21\x6c", [0x0003] = "\x22\x63",
   [0x0004] = "\x22\x68", [0x0005] = "\x21\x6d", [0x0007] = "\x21\x3e",
diff --git a/iconvdata/cns11643l1.h b/iconvdata/cns11643l1.h
index 4f9d08513d..aa78c26d6c 100644
--- a/iconvdata/cns11643l1.h
+++ b/iconvdata/cns11643l1.h
@@ -19,9 +19,10 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <stdint.h>
+#include <gconv.h>
 
 /* Table for CNS 11643, plane 1 to UCS4 conversion.  */
-extern const uint16_t cns11643l1_to_ucs4_tab[];
+extern const uint16_t __cns11643l1_to_ucs4_tab[];
 
 
 static inline wchar_t
@@ -47,25 +48,25 @@ cns11643l1_to_ucs4 (const char **s, size_t avail, unsigned char offset)
 
   (*s) += 2;
 
-  return cns11643l1_to_ucs4_tab[idx] ?: ((*s) -= 2, UNKNOWN_10646_CHAR);
+  return __cns11643l1_to_ucs4_tab[idx] ?: ((*s) -= 2, UNKNOWN_10646_CHAR);
 }
 
 
 /* Tables for the UCS4 -> CNS conversion.  */
-extern const char cns11643l1_from_ucs4_tab1[][2];
-extern const char cns11643l1_from_ucs4_tab2[][2];
-extern const char cns11643l1_from_ucs4_tab3[][2];
-extern const char cns11643l1_from_ucs4_tab4[][2];
-extern const char cns11643l1_from_ucs4_tab5[][2];
-extern const char cns11643l1_from_ucs4_tab6[][2];
-extern const char cns11643l1_from_ucs4_tab7[][2];
-extern const char cns11643l1_from_ucs4_tab8[][2];
-extern const char cns11643l1_from_ucs4_tab9[][2];
-extern const char cns11643l1_from_ucs4_tab10[][2];
-extern const char cns11643l1_from_ucs4_tab11[][2];
-extern const char cns11643l1_from_ucs4_tab12[][2];
-extern const char cns11643l1_from_ucs4_tab13[][2];
-extern const char cns11643l1_from_ucs4_tab14[][2];
+extern const char __cns11643l1_from_ucs4_tab1[][2];
+extern const char __cns11643l1_from_ucs4_tab2[][2];
+extern const char __cns11643l1_from_ucs4_tab3[][2];
+extern const char __cns11643l1_from_ucs4_tab4[][2];
+extern const char __cns11643l1_from_ucs4_tab5[][2];
+extern const char __cns11643l1_from_ucs4_tab6[][2];
+extern const char __cns11643l1_from_ucs4_tab7[][2];
+extern const char __cns11643l1_from_ucs4_tab8[][2];
+extern const char __cns11643l1_from_ucs4_tab9[][2];
+extern const char __cns11643l1_from_ucs4_tab10[][2];
+extern const char __cns11643l1_from_ucs4_tab11[][2];
+extern const char __cns11643l1_from_ucs4_tab12[][2];
+extern const char __cns11643l1_from_ucs4_tab13[][2];
+extern const char __cns11643l1_from_ucs4_tab14[][2];
 
 
 static inline size_t
@@ -73,110 +74,95 @@ ucs4_to_cns11643l1 (wchar_t wch, char *s, size_t avail)
 {
   unsigned int ch = (unsigned int) wch;
   char buf[2];
-  const char *cp = NULL;
-
-  if (ch < 0xa7)
-    cp = "";
-  else if (ch < 0xf7)
-    cp = cns11643l1_from_ucs4_tab1[ch - 0xa7];
-  else if (ch < 0x2c7)
-    cp = "";
-  else if (ch <= 0x2d9)
-    cp = cns11643l1_from_ucs4_tab2[ch - 0x2c7];
-  else if (ch < 0x391)
-    cp = "";
-  else if (ch <= 0x3c9)
-    cp = cns11643l1_from_ucs4_tab3[ch - 0x391];
-  else if (ch < 0x2013)
-    cp = "";
-  else if (ch <= 0x203e)
-    cp = cns11643l1_from_ucs4_tab4[ch - 0x2013];
-  else if (ch == 0x2103)
-    cp = "\x22\x6a";
-  else if (ch == 0x2105)
-    cp = "\x22\x22";
-  else if (ch == 0x2109)
-    cp = "\x22\x6b";
-  else if (ch < 0x2160)
-    cp = "";
-  else if (ch <= 0x2169)
+  const char *cp = buf;
+
+  switch (ch)
     {
+    case 0xa7 ... 0xf7:
+      cp = __cns11643l1_from_ucs4_tab1[ch - 0xa7];
+      break;
+    case 0x2c7 ... 0x2d9:
+      cp = __cns11643l1_from_ucs4_tab2[ch - 0x2c7];
+      break;
+    case 0x391 ... 0x3c9:
+      cp = __cns11643l1_from_ucs4_tab3[ch - 0x391];
+    case 0x2013 ... 0x203e:
+      cp = __cns11643l1_from_ucs4_tab4[ch - 0x2013];
+    case 0x2103:
+      cp = "\x22\x6a";
+      break;
+    case 0x2105:
+      cp = "\x22\x22";
+      break;
+    case 0x2109:
+      cp = "\x22\x6b";
+      break;
+    case 0x2160 ... 0x2169:
       buf[0] = '\x24';
       buf[1] = '\x2b' + (ch - 0x2160);
-      cp = buf;
-    }
-  else if (ch < 0x2170)
-    cp = "";
-  else if (ch <= 0x2179)
-    {
+      break;
+    case 0x2170 ... 0x2179:
       buf[0] = '\x26';
       buf[1] = '\x35' + (ch - 0x2170);
-      cp = buf;
-    }
-  else if (ch < 0x2190)
-    cp = "";
-  else if (ch <= 0x2199)
-    cp = cns11643l1_from_ucs4_tab5[ch - 0x2190];
-  else if (ch < 0x2215)
-    cp = "";
-  else if (ch <= 0x2267)
-    cp = cns11643l1_from_ucs4_tab6[ch - 0x2215];
-  else if (ch == 0x22a5)
-    cp = "\x22\x47";
-  else if (ch == 0x22bf)
-    cp = "\x22\x4a";
-  else if (ch < 0x2400)
-    cp = "";
-  else if (ch <= 0x2421)
-    cp = cns11643l1_from_ucs4_tab7[ch - 0x2400];
-  else if (ch < 0x2460)
-    cp = "";
-  else if (ch <= 0x247d)
-    cp = cns11643l1_from_ucs4_tab8[ch - 0x2460];
-  else if (ch < 0x2500)
-    cp = "";
-  else if (ch <= 0x2642)
-    cp = cns11643l1_from_ucs4_tab9[ch - 0x2500];
-  else if (ch < 0x3000)
-    cp = "";
-  else if (ch <= 0x3029)
-    cp = cns11643l1_from_ucs4_tab10[ch - 0x3000];
-  else if (ch == 0x30fb)
-    cp = "\x21\x26";
-  else if (ch < 0x3105)
-    cp = "";
-  else if (ch <= 0x3129)
-    {
+      break;
+    case 0x2190 ...0x2199:
+      cp = __cns11643l1_from_ucs4_tab5[ch - 0x2190];
+      break;
+    case 0x2215 ... 0x2267:
+      cp = __cns11643l1_from_ucs4_tab6[ch - 0x2215];
+      break;
+    case 0x22a5:
+      cp = "\x22\x47";
+      break;
+    case 0x22bf:
+      cp = "\x22\x4a";
+      break;
+    case 0x2400 ... 0x2421:
+      cp = __cns11643l1_from_ucs4_tab7[ch - 0x2400];
+      break;
+    case 0x2460 ... 0x247d:
+      cp = __cns11643l1_from_ucs4_tab8[ch - 0x2460];
+      break;
+    case 0x2500 ... 0x2642:
+      cp = __cns11643l1_from_ucs4_tab9[ch - 0x2500];
+      break;
+    case 0x3000 ... 0x3029:
+      cp = __cns11643l1_from_ucs4_tab10[ch - 0x3000];
+      break;
+    case 0x30fb:
+      cp = "\x21\x26";
+      break;
+    case 0x3105 ... 0x3129:
       buf[0] = '\x25';
       buf[1] = '\x26' + (ch - 0x3105);
-      cp = buf;
+      break;
+    case 0x32a3:
+      cp = "\x22\x21";
+      break;
+    case 0x338e ... 0x33d5:
+      cp = __cns11643l1_from_ucs4_tab11[ch - 0x338e];
+      break;
+    case 0x4e00 ... 0x9f9c:
+      cp = __cns11643l1_from_ucs4_tab12[ch - 0x4e00];
+      break;
+    case 0xfe30 ... 0xfe6b:
+      cp = __cns11643l1_from_ucs4_tab13[ch - 0xfe30];
+      break;
+    case 0xff01 ... 0xff5d:
+      cp = __cns11643l1_from_ucs4_tab14[ch - 0xff01];
+      break;
+    case 0xffe0:
+      cp = "\x22\x66";
+      break;
+    case 0xffe1:
+      cp = "\x22\x67";
+      break;
+    case 0xffe5:
+      cp = "\x22\x64";
+      break;
+    default:
+      buf[0] = '\0';
     }
-  else if (ch == 0x32a3)
-    cp = "\x22\x21";
-  else if (ch < 0x338e)
-    cp = "";
-  else if (ch <= 0x33d5)
-    cp = cns11643l1_from_ucs4_tab11[ch - 0x338e];
-  else if (ch < 0x4e00)
-    cp = "";
-  else if (ch <= 0x9f9c)
-    cp = cns11643l1_from_ucs4_tab12[ch - 0x4e00];
-  else if (ch < 0xfe30)
-    cp = "";
-  else if (ch <= 0xfe6b)
-    cp = cns11643l1_from_ucs4_tab13[ch - 0xfe30];
-  else if (ch < 0xff01)
-    cp = "";
-  else if (ch <= 0xff5d)
-    cp = cns11643l1_from_ucs4_tab14[ch - 0xff01];
-  else if (ch == 0xffe0)
-    cp = "\x22\x66";
-  else if (ch == 0xffe1)
-    cp = "\x22\x67";
-  else if (ch == 0xffe5)
-    cp = "\x22\x64";
-  else
-    cp = "";
 
   if (cp[0] == '\0')
     return UNKNOWN_10646_CHAR;
diff --git a/iconvdata/ebcdic-at-de-a.c b/iconvdata/ebcdic-at-de-a.c
index 7251490ae7..654bdf87fd 100644
--- a/iconvdata/ebcdic-at-de-a.c
+++ b/iconvdata/ebcdic-at-de-a.c
@@ -1,5 +1,5 @@
 /* Conversion from and to EBCDIC-AT-DE-A.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,12 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+#include <stdint.h>
+
+/* Get the conversion table.  */
 #include <ebcdic-at-de-a.h>
-#define NAME "EBCDIC-AT-DE-A"
+
+#define CHARSET_NAME	"EBCDIC-AT-DE-A"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/ebcdic-at-de.c b/iconvdata/ebcdic-at-de.c
index d9168fcc1d..ab718851d9 100644
--- a/iconvdata/ebcdic-at-de.c
+++ b/iconvdata/ebcdic-at-de.c
@@ -1,5 +1,5 @@
 /* Conversion from and to EBCDIC-AT-DE.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,12 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+#include <stdint.h>
+
+/* Get the conversion table.  */
 #include <ebcdic-at-de.h>
-#define NAME "EBCDIC-AT-DE"
+
+#define CHARSET_NAME	"EBCDIC-AT-DE"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/ebcdic-ca-fr.c b/iconvdata/ebcdic-ca-fr.c
index a42914e50e..91cf5aa388 100644
--- a/iconvdata/ebcdic-ca-fr.c
+++ b/iconvdata/ebcdic-ca-fr.c
@@ -1,5 +1,5 @@
 /* Conversion from and to EBCDIC-CA-FR.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,12 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+#include <stdint.h>
+
+/* Get the conversion table.  */
 #include <ebcdic-ca-fr.h>
-#define NAME "EBCDIC-CA-FR"
+
+#define CHARSET_NAME	"EBCDIC-CA-FR"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/euccn.c b/iconvdata/euccn.c
index f683836ff7..90e82cb41e 100644
--- a/iconvdata/euccn.c
+++ b/iconvdata/euccn.c
@@ -18,262 +18,124 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
-#include <stdint.h>
-#include <string.h>
-#include <wchar.h>
 #include <gb2312.h>
+#include <stdint.h>
 
-/* Direction of the transformation.  */
-static int to_euccn_object;
-static int from_euccn_object;
-
-
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "EUC-CN") != NULL)
-    step->data = &from_euccn_object;
-  else if (strcasestr (step->to_name, "EUC-CN") != NULL)
-    step->data = &to_euccn_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_euccn_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = (unsigned char) inbuf[cnt];
-		  wchar_t ch;
-
-		  if (inchar <= 0x7f)
-		    ch = (wchar_t) inchar;
-                  else if ((inchar <= 0xa0 || inchar > 0xfe)
-			   && inchar != 0x8e && inchar != 0x8f)
-                      /* This is illegal.  */
-                      ch = L'\0';
-		  else
-		    {
-		      /* Two or more byte character.  First test whether the
-			 next character is also available.  */
-		      const char *endp;
-		      int inchar2;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = (unsigned char) inbuf[++cnt];
-
-		      /* All second bytes of a multibyte character must be
-			 >= 0xa1. */
-		      if (inchar2 < 0xa1)
-			{
-			  /* This is an illegal character.  */
-			  --cnt;
-			  result = GCONV_ILLEGAL_INPUT;
-			  break;
-			}
-
-		      /* This is code set 1: GB 2312-80.  */
-		      endp = &inbuf[cnt - 1];
-
-		      ch = gb2312_to_ucs4 (&endp, 2, 0x80);
-		      if (ch != L'\0')
-			++cnt;
-
-		      if (ch == UNKNOWN_10646_CHAR)
-                         ch = L'\0';
-
-		      if (ch == L'\0')
-			--cnt;
-		    }
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  wchar_t ch = *((wchar_t *) (inbuf + cnt));
-
-		  if (ch <= L'\x7f')
-		    /* It's plain ASCII.  */
-		    outbuf[outchars] = ch;
-		  else
-		    {
-		      /* Try the JIS character sets.  */
-		      size_t found;
-
-		      found = ucs4_to_gb2312 (ch, &outbuf[outchars],
-					      (data->outbufsize
-					       - outchars));
-		      if (found > 0)
-			{
-			  /* It's a GB 2312 character, adjust it for
-			     EUC-CN.  */
-			  outbuf[outchars++] += 0x80;
-			  outbuf[outchars] += 0x80;
-			}
-		      else if (found == 0)
-			{
-			  /* We ran out of space.  */
-			  extra = 2;
-			  break;
-			}
-		      else
-			/* Illegal character.  */
-			break;
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_euccn_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
-
-  return result;
-}
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"EUC-CN"
+#define FROM_LOOP		from_euc_cn
+#define TO_LOOP			to_euc_cn
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		2
+#define MIN_NEEDED_TO		4
+
+
+/* First define the conversion function from ISO 8859-1 to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = *inptr;						      \
+									      \
+    if (ch <= 0x7f)							      \
+      ++inptr;								      \
+    else								      \
+      if ((ch <= 0xa0 || ch > 0xfe) && ch != 0x8e && ch != 0x8f)	      \
+	{								      \
+	  /* This is illegal.  */					      \
+	  result = GCONV_ILLEGAL_INPUT;					      \
+	  break;							      \
+	}								      \
+      else								      \
+	{								      \
+	  /* Two or more byte character.  First test whether the	      \
+	     next character is also available.  */			      \
+	  const char *endp;						      \
+									      \
+	  if (NEED_LENGTH_TEST && inptr + 1 >= inend)			      \
+	    {								      \
+	      /* The second character is not available.  Store		      \
+		 the intermediate result.  */				      \
+	      result = GCONV_INCOMPLETE_INPUT;				      \
+	      break;							      \
+	    }								      \
+									      \
+	  ch = inptr[1];						      \
+									      \
+	  /* All second bytes of a multibyte character must be >= 0xa1. */    \
+	  if (ch < 0xa1)						      \
+	    {								      \
+	      /* This is an illegal character.  */			      \
+	      result = GCONV_ILLEGAL_INPUT;				      \
+	      break;							      \
+	    }								      \
+									      \
+	  /* This is code set 1: GB 2312-80.  */			      \
+	  endp = inptr;							      \
+									      \
+	  ch = gb2312_to_ucs4 (&endp, 2, 0x80);				      \
+	  if (ch == UNKNOWN_10646_CHAR)					      \
+	    {								      \
+	      /* This is an illegal character.  */			      \
+	      result = GCONV_ILLEGAL_INPUT;				      \
+	      break;							      \
+	    }								      \
+									      \
+	  inptr += 2;							      \
+	}								      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+									      \
+    if (ch <= L'\x7f')							      \
+      /* It's plain ASCII.  */						      \
+      *outptr++ = (unsigned char) ch;					      \
+    else								      \
+      {									      \
+	size_t found;							      \
+									      \
+	found = ucs4_to_gb2312 (ch, outptr,				      \
+				(NEED_LENGTH_TEST			      \
+				 ? outend - outptr : MAX_NEEDED_OUTPUT));     \
+	if (!NEED_LENGTH_TEST || found != 0)				      \
+	  {								      \
+	    if (found == UNKNOWN_10646_CHAR)				      \
+	      {								      \
+		/* Illegal character.  */				      \
+		result = GCONV_ILLEGAL_INPUT;				      \
+		break;							      \
+	      }								      \
+									      \
+	    /* It's a GB 2312 character, adjust it for EUC-CN.  */	      \
+	    *outptr++ += 0x80;						      \
+	    *outptr++ += 0x80;						      \
+	  }								      \
+	else								      \
+	  {								      \
+	    /* We ran out of space.  */					      \
+	    result = GCONV_FULL_OUTPUT;					      \
+	    break;							      \
+	  }								      \
+      }									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/eucjp.c b/iconvdata/eucjp.c
index e6a71cc791..24ebed94ec 100644
--- a/iconvdata/eucjp.c
+++ b/iconvdata/eucjp.c
@@ -18,306 +18,190 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
 #include <stdint.h>
-#include <string.h>
-#include <wchar.h>
+#include <gconv.h>
 #include <jis0201.h>
 #include <jis0208.h>
 #include <jis0212.h>
 
-/* Direction of the transformation.  */
-static int to_eucjp_object;
-static int from_eucjp_object;
-
-
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "EUC-JP") != NULL)
-    step->data = &from_eucjp_object;
-  else if (strcasestr (step->to_name, "EUC-JP") != NULL)
-    step->data = &to_eucjp_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_eucjp_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = (unsigned char) inbuf[cnt];
-		  wchar_t ch;
-
-		  if (inchar <= 0x7f)
-		    ch = (wchar_t) inchar;
-                  else if ((inchar <= 0xa0 || inchar > 0xfe)
-			   && inchar != 0x8e && inchar != 0x8f)
-                      /* This is illegal.  */
-                      ch = L'\0';
-		  else
-		    {
-		      /* Two or more byte character.  First test whether the
-			 next character is also available.  */
-		      int inchar2;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = (unsigned char) inbuf[++cnt];
-
-		      /* All second bytes of a multibyte character must be
-			 >= 0xa1. */
-		      if (inchar2 < 0xa1)
-			{
-			  /* This is an illegal character.  */
-			  --cnt;
-			  result = GCONV_ILLEGAL_INPUT;
-			  break;
-			}
-
-		      if (inchar == '\x8e')
-			/* This is code set 2: half-width katakana.  */
-			ch = jisx0201_to_ucs4 (inchar2);
-		      else if (inchar == '\x8f')
-			{
-			  /* This is code set 3: JIS X 0212-1990.  */
-			  const char *endp = &inbuf[cnt];
-
-			  ch = jisx0212_to_ucs4 (&endp, 1 + inchars - cnt,
-						 0x80);
-			  cnt = endp - inbuf;
-			}
-		      else
-			{
-			  /* This is code set 1: JIS X 0208.  */
-			  const char *endp = &inbuf[cnt - 1];
-
-			  ch = jisx0208_to_ucs4 (&endp, 2 + inchars - cnt,
-						 0x80);
-			  if (ch != L'\0')
-			    ++cnt;
-			}
-
-		      if (ch == UNKNOWN_10646_CHAR)
-                         ch = L'\0';
-
-		      if (ch == L'\0')
-			--cnt;
-		    }
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  wchar_t ch = *((wchar_t *) (inbuf + cnt));
-
-		  if (ch <= L'\x7f')
-		    /* It's plain ASCII.  */
-		    outbuf[outchars] = ch;
-		  else
-		    {
-		      /* Try the JIS character sets.  */
-		      size_t found;
-
-		      found = ucs4_to_jisx0201 (ch, &outbuf[outchars]);
-
-		      if (found == UNKNOWN_10646_CHAR)
-			{
-			  /* No JIS 0201 character.  */
-			  found = ucs4_to_jisx0208 (ch, &outbuf[outchars],
-						    (data->outbufsize
-						     - outchars));
-			  if (found == 0)
-			    {
-			      /* We ran out of space.  */
-			      extra = 2;
-			      break;
-			    }
-			  else if (found != UNKNOWN_10646_CHAR)
-			    {
-			      /* It's a JIS 0208 character, adjust it for
-				 EUC-JP.  */
-			      outbuf[outchars++] += 0x80;
-			      outbuf[outchars] += 0x80;
-			    }
-			  else
-			    {
-			      /* No JIS 0208 character.  */
-			      found = ucs4_to_jisx0212 (ch, &outbuf[outchars],
-							(data->outbufsize
-							 - outchars));
-
-			      if (found == 0)
-				{
-				  /* We ran out of space.  */
-				  extra = 2;
-				  break;
-				}
-			      else if (found != UNKNOWN_10646_CHAR)
-				{
-				  /* It's a JIS 0212 character, adjust it for
-				     EUC-JP.  */
-				  outbuf[outchars++] += 0x80;
-				  outbuf[outchars] += 0x80;
-				}
-			      else
-				/* Illegal character.  */
-				break;
-			    }
-			}
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_eucjp_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
-
-  return result;
-}
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"EUC-JP"
+#define FROM_LOOP		from_euc_jp
+#define TO_LOOP			to_euc_jp
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		3
+#define MIN_NEEDED_TO		4
+
+
+/* First define the conversion function from EUC-JP to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = *inptr;						      \
+									      \
+    if (ch <= 0x7f)							      \
+      ++inptr;								      \
+    else if ((ch <= 0xa0 || ch > 0xfe) && ch != 0x8e && ch != 0x8f)	      \
+      {									      \
+	/* This is illegal.  */						      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+    else								      \
+      {									      \
+	/* Two or more byte character.  First test whether the next	      \
+	   character is also available.  */				      \
+	int ch2;							      \
+									      \
+	if (NEED_LENGTH_TEST && inptr + 1 >= inend)			      \
+	  {								      \
+	    /* The second character is not available.  Store the	      \
+	       intermediate result.  */					      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch2 = inptr[1];							      \
+									      \
+	/* All second bytes of a multibyte character must be >= 0xa1. */      \
+	if (ch2 < 0xa1)							      \
+	  {								      \
+	    /* This is an illegal character.  */			      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	if (ch == 0x8e)							      \
+	  {								      \
+	    /* This is code set 2: half-width katakana.  */		      \
+	    ch = jisx0201_to_ucs4 (ch2);				      \
+	    inptr += 2;							      \
+	  }								      \
+	else								      \
+	  {								      \
+	    const unsigned char *endp;					      \
+									      \
+	    if (ch == 0x8f)						      \
+	      {								      \
+		/* This is code set 3: JIS X 0212-1990.  */		      \
+		endp = inptr + 1;					      \
+									      \
+		ch = jisx0212_to_ucs4 (&endp,				      \
+				       NEED_LENGTH_TEST ? inend - endp : 2,   \
+				       0x80);				      \
+	      }								      \
+	    else							      \
+	      {								      \
+		/* This is code set 1: JIS X 0208.  */			      \
+		endp = inptr;						      \
+									      \
+		ch = jisx0208_to_ucs4 (&endp,				      \
+				       NEED_LENGTH_TEST ? inend - inptr : 2,  \
+				       0x80);				      \
+	      }								      \
+									      \
+	    if (NEED_LENGTH_TEST && ch == 0)				      \
+	      {								      \
+		/* Not enough input available.  */			      \
+		result = GCONV_INCOMPLETE_INPUT;			      \
+		break;							      \
+	      }								      \
+	    if (ch == UNKNOWN_10646_CHAR)				      \
+	      {								      \
+		/* Illegal character.  */				      \
+		result = GCONV_ILLEGAL_INPUT;				      \
+		break;							      \
+	      }								      \
+	    inptr = endp;						      \
+	  }								      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+									      \
+    if (ch <= 0x7f)							      \
+      /* It's plain ASCII.  */						      \
+      *outptr++ = ch;							      \
+    else								      \
+      {									      \
+	/* Try the JIS character sets.  */				      \
+	size_t found;							      \
+									      \
+	/* See whether we have room for at least two characters.  */	      \
+	if (NEED_LENGTH_TEST && outptr + 1 >= outend)			      \
+	  {								      \
+	    result = GCONV_FULL_OUTPUT;					      \
+	    break;							      \
+	  }								      \
+									      \
+	found = ucs4_to_jisx0201 (ch, outptr + 1);			      \
+	if (found != UNKNOWN_10646_CHAR)				      \
+	  {								      \
+	    /* Yes, it's a JIS 0201 character.  Store the shift byte.  */     \
+	    *outptr = 0x8e;						      \
+	    outptr += 2;						      \
+	  }								      \
+	else								      \
+	  {								      \
+	    /* No JIS 0201 character.  */				      \
+	    found = ucs4_to_jisx0208 (ch, outptr, 2);			      \
+	    /* Please note that we always have enough room for the output. */ \
+	    if (found != UNKNOWN_10646_CHAR)				      \
+	      {								      \
+		/* It's a JIS 0208 character, adjust it for EUC-JP.  */	      \
+		*outptr++ += 0x80;					      \
+		*outptr++ += 0x80;					      \
+	      }								      \
+	    else							      \
+	      {								      \
+		/* No JIS 0208 character.  */				      \
+		found = ucs4_to_jisx0212 (ch, outptr + 1,		      \
+					  (NEED_LENGTH_TEST		      \
+					   ? outend - outptr - 1 : 2));	      \
+		  							      \
+		if (found == 0)						      \
+		  {							      \
+		    /* We ran out of space.  */				      \
+		    result = GCONV_FULL_OUTPUT;				      \
+		    break;						      \
+		  }							      \
+		else if (found != UNKNOWN_10646_CHAR)			      \
+		  {							      \
+		    /* It's a JIS 0212 character, adjust it for EUC-JP.  */   \
+		    *outptr++ = 0x8f;					      \
+		    *outptr++ += 0x80;					      \
+		    *outptr++ += 0x80;					      \
+		  }							      \
+		else							      \
+		  {							      \
+		    /* Illegal character.  */				      \
+		    result = GCONV_ILLEGAL_INPUT;			      \
+		    break;						      \
+		  }							      \
+	      }								      \
+	  }								      \
+      }									      \
+									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/euckr.c b/iconvdata/euckr.c
index 2ad9478729..50e4b40838 100644
--- a/iconvdata/euckr.c
+++ b/iconvdata/euckr.c
@@ -1,7 +1,8 @@
 /* Mapping tables for EUC-KR handling.
    Copyright (C) 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jungshik Shin <jshin@pantheon.yale.edu>, 1998.
+   Contributed by Jungshik Shin <jshin@pantheon.yale.edu>
+   and Ulrich Drepper <drepper@cygnus.com>, 1998.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
@@ -18,276 +19,142 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
 #include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <wchar.h>
 #include <ksc5601.h>
 
-/* Direction of the transformation.  */
-static int to_euckr_object;
-static int from_euckr_object;
-
 
 static inline void
-euckr_from_ucs4(wchar_t ch, unsigned char *cp)
+euckr_from_ucs4 (uint32_t ch, unsigned char *cp)
 {
   if (ch > 0x7f)
     {
-      uint16_t idx=0;
+      uint16_t idx = 0;
 
       if (ucs4_to_ksc5601 (ch, &idx))
 	idx |= 0x8080;
 
-      *cp = (unsigned char) (idx/256);
-      *(cp+1) = (unsigned char) (idx & 0xff) ;
+      cp[0] = (unsigned char) (idx / 256);
+      cp[1] = (unsigned char) (idx & 0xff);
     }
-  /* think about 0x5c ; '\' */
+  /* XXX Think about 0x5c ; '\'.  */
   else
     {
-      *cp = (unsigned char) (0x7f & ch) ;
-      *(cp+1) = (unsigned char) 0;
+      cp[0] = (unsigned char) ch;
+      cp[1] = '\0';
     }
 }
 
 
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "EUC-KR") != NULL)
-    step->data = &from_euckr_object;
-  else if (strcasestr (step->to_name, "EUC-KR") != NULL)
-    step->data = &to_euckr_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_euckr_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = (unsigned char) inbuf[cnt];
-		  wchar_t ch;
-
-		  /*
-		    half-width Korean Currency WON sign
-
-		    if (inchar == 0x5c)
-		      ch =  0x20a9;
-		    else if (inchar <= 0x7f)
-		      ch = (wchar_t) inchar;
-		  */
-
-		  if (inchar <= 0x7f)
-		    ch = (wchar_t) inchar;
-
-
-/* 0xfe(->0x7e : row 94) and 0xc9(->0x59 : row 41) are user-defined areas */
-
-                  else if ( inchar <= 0xa0 || inchar > 0xfe || inchar == 0xc9)
-                      /* This is illegal.  */
-                      ch = L'\0';
-		  else
-		    {
-		      /* Two-byte character.  First test whether the next
-			 character is also available.  */
-		      int inchar2;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = (unsigned char) inbuf[++cnt];
-
-		      ch = ksc5601_to_ucs4 ((uint16_t) (inchar * 256 + inchar2)
-					    & 0x7f7f);
-		      if (ch == UNKNOWN_10646_CHAR)
-                         ch = L'\0';
-
-		      if (ch == L'\0')
-			--cnt;
-		    }
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  wchar_t ch = *((wchar_t *) (inbuf + cnt));
-		  unsigned char cp[2];
-
-/* decomposing Hangul syllables not available in KS C 5601 into Jamos
-   should be considered either here or in euckr_from_ucs4() */
-
-                  euckr_from_ucs4(ch,cp) ;
-
-		  if (cp[0] == '\0' && ch != 0)
-		    /* Illegal character.  */
-		    break;
-
-		  outbuf[outchars] = cp[0];
-		  /* Now test for a possible second byte and write this
-		     if possible.  */
-		  if (cp[1] != '\0')
-		    {
-		      if (outchars + 1 >= data->outbufsize)
-			{
-			  /* The result does not fit into the buffer.  */
-			  extra = 1;
-			  break;
-			}
-		      outbuf[++outchars] = cp[1];
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_euckr_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
-
-  return result;
-}
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"EUC-KR"
+#define FROM_LOOP		from_euc_kr
+#define TO_LOOP			to_euc_kr
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		2
+#define MIN_NEEDED_TO		4
+
+
+/* First define the conversion function from EUC-KR to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = *inptr;						      \
+									      \
+    /* Half-width Korean Currency WON sign				      \
+									      \
+       if (inchar == 0x5c)						      \
+	 ch =  0x20a9;							      \
+       else if (inchar <= 0x7f)						      \
+	 ch = (wchar_t) inchar;						      \
+    */									      \
+									      \
+    if (ch <= 0x7f)							      \
+      /* Plain ASCII.  */						      \
+      ++inptr;								      \
+    /* 0xfe(->0x7e : row 94) and 0xc9(->0x59 : row 41) are		      \
+       user-defined areas.  */						      \
+    else if (ch <= 0xa0 || ch > 0xfe || ch == 0xc9)			      \
+      {									      \
+	/* This is illegal.  */						      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+    else								      \
+      {									      \
+	/* Two-byte character.  First test whether the next character	      \
+	   is also available.  */					      \
+	int ch2;							      \
+									      \
+	if (NEED_LENGTH_TEST && inptr + 1 >= inend)			      \
+	  {								      \
+	    /* The second character is not available.  */		      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch2 = inptr[1];							      \
+									      \
+	if (ch2 < 0xa1 || ch2 >= 0xfe					      \
+	    || ((ch = ksc5601_to_ucs4 ((uint16_t) (ch * 256 + ch2) & 0x7f7f)) \
+		== UNKNOWN_10646_CHAR))					      \
+	  {								      \
+	    /* This is an illegal character.  */			      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	inptr += 2;							      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    unsigned char cp[2];						      \
+									      \
+    /* Decomposing Hangul syllables not available in KS C 5601 into	      \
+       Jamos should be considered either here or in euckr_from_ucs4() */      \
+    euckr_from_ucs4 (ch, cp) ;						      \
+									      \
+    if (cp[0] == '\0' && ch != 0)					      \
+      {									      \
+	/* Illegal character.  */					      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *outptr++ = cp[0];							      \
+    /* Now test for a possible second byte and write this if possible.  */    \
+    if (cp[1] != '\0')							      \
+      {									      \
+	if (NEED_LENGTH_TEST && outptr >= outend)			      \
+	  {								      \
+	    /* The result does not fit into the buffer.  */		      \
+	    --outptr;							      \
+	    result = GCONV_FULL_OUTPUT;					      \
+	    break;							      \
+	  }								      \
+	*outptr++ = cp[1];						      \
+      }									      \
+									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/euctw.c b/iconvdata/euctw.c
index fd422c1fb0..406dd67f29 100644
--- a/iconvdata/euctw.c
+++ b/iconvdata/euctw.c
@@ -18,302 +18,171 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
 #include <stdint.h>
-#include <string.h>
-#include <wchar.h>
 #include <cns11643l1.h>
 #include <cns11643.h>
 
-/* Direction of the transformation.  */
-static int to_euctw_object;
-static int from_euctw_object;
-
-
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "EUC-TW") != NULL)
-    step->data = &from_euctw_object;
-  else if (strcasestr (step->to_name, "EUC-TW") != NULL)
-    step->data = &to_euctw_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_euctw_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = (unsigned char) inbuf[cnt];
-		  wchar_t ch;
-
-		  if (inchar <= 0x7f)
-		    ch = (wchar_t) inchar;
-                  else if ((inchar <= 0xa0 || inchar > 0xfe)
-			   && inchar != 0x8e)
-                      /* This is illegal.  */
-                      ch = L'\0';
-		  else
-		    {
-		      /* Two or more byte character.  First test whether the
-			 next character is also available.  */
-		      int inchar2;
-
-		      if (cnt + 1 + (inchar == 0x8e ? 2 : 0) >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = (unsigned char) inbuf[++cnt];
-
-		      /* All second bytes of a multibyte character must be
-			 >= 0xa1. */
-		      if (inchar2 < 0xa1 && inchar2 == 0xff)
-			{
-			  /* This is an illegal character.  */
-			  --cnt;
-			  result = GCONV_ILLEGAL_INPUT;
-			  break;
-			}
-
-		      if (inchar == '\x8e')
-			{
-			  /* This is code set 2: CNS 11643, planes 1 to 16.  */
-			  const char *endp = &inbuf[cnt];
-
-			  ch = cns11643_to_ucs4 (&endp, 2 + inchars - cnt,
-						 0x80);
-
-			  if (ch == UNKNOWN_10646_CHAR)
-			    ch = L'\0';
-			  if (ch != L'\0')
-			    cnt += 2;
-			}
-		      else
-			{
-			  /* This is code set 1: CNS 11643, plane 1.  */
-			  const char *endp = &inbuf[cnt - 1];
-
-			  ch = cns11643l1_to_ucs4 (&endp, 2 + inchars - cnt,
-						   0x80);
-
-			  if (ch == UNKNOWN_10646_CHAR)
-			    ch = L'\0';
-			  if (ch != L'\0')
-			    ++cnt;
-			}
-
-		      if (ch == L'\0')
-			--cnt;
-		    }
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  wchar_t ch = *((wchar_t *) (inbuf + cnt));
-
-		  if (ch <= L'\x7f')
-		    /* It's plain ASCII.  */
-		    outbuf[outchars] = ch;
-		  else
-		    {
-		      /* Try the JIS character sets.  */
-		      size_t found;
-
-		      found = ucs4_to_cns11643l1 (ch, &outbuf[outchars],
-						  (data->outbufsize
-						     - outchars));
-		      if (found == 0)
-			{
-			  /* We ran out of space.  */
-			  extra = 2;
-			  break;
-			}
-		      else if (found != UNKNOWN_10646_CHAR)
-			{
-			  /* It's a CNS 11643, plane 1 character, adjust it
-			     for EUC-TW.  */
-			  outbuf[outchars++] += 0x80;
-			  outbuf[outchars] += 0x80;
-			}
-		      else
-			{
-			  /* No CNS 11643, plane 1 character.  */
-			  outbuf[outchars] = '\x8e';
-
-			  found = ucs4_to_cns11643 (ch, &outbuf[outchars + 1],
-						    (data->outbufsize
-						     - outchars - 1));
-			  if (found > 0)
-			    {
-			      /* It's a CNS 11643 character, adjust it for
-				 EUC-TW.  */
-			      outbuf[++outchars] += 0xa0;
-			      outbuf[++outchars] += 0x80;
-			      outbuf[outchars] += 0x80;
-			    }
-			  else if (found == 0)
-			    {
-			      /* We ran out of space.  */
-			      extra = 4;
-			      break;
-			    }
-			  else
-			    /* Illegal character.  */
-			    break;
-			}
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_euctw_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
-
-  return result;
-}
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"EUC-TW"
+#define FROM_LOOP		from_euc_tw
+#define TO_LOOP			to_euc_tw
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		4
+#define MIN_NEEDED_TO		4
+
+
+/* First define the conversion function from EUC-TW to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = *inptr;						      \
+    									      \
+    if (ch <= 0x7f)							      \
+      /* Plain ASCII.  */						      \
+      ++inptr;								      \
+    else if ((ch <= 0xa0 || ch > 0xfe) && ch != 0x8e)			      \
+      {									      \
+	/* This is illegal.  */						      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+    else								      \
+      {									      \
+	/* Two or more byte character.  First test whether the next	      \
+	   character is also available.  */				      \
+	uint32_t ch2;							      \
+									      \
+	if (NEED_LENGTH_TEST && inptr + (ch == 0x8e ? 3 : 1) >= inend)	      \
+	  {								      \
+	    /* The second character is not available.  Store the	      \
+	       intermediate result.  */					      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch2 = *inptr;							      \
+									      \
+	/* All second bytes of a multibyte character must be >= 0xa1. */      \
+	if (ch2 < 0xa1 || ch2 == 0xff)					      \
+	  {								      \
+	    /* This is an illegal character.  */			      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	if (ch == 0x8e)							      \
+	  {								      \
+	    /* This is code set 2: CNS 11643, planes 1 to 16.  */	      \
+	    const char *endp = inptr + 1;				      \
+									      \
+	    ch = cns11643_to_ucs4 (&endp,				      \
+				   NEED_LENGTH_TEST ? inend - inptr - 1 : 3,  \
+				   0x80);				      \
+	    /* Please note that we need not test for the missing input	      \
+	       characters here anymore.  */				      \
+	    if (ch == UNKNOWN_10646_CHAR)				      \
+	      {								      \
+		/* Illegal input.  */					      \
+		result = GCONV_ILLEGAL_INPUT;				      \
+		break;							      \
+	      }								      \
+									      \
+	    inptr += 4;							      \
+	  }								      \
+	else								      \
+	  {								      \
+	    /* This is code set 1: CNS 11643, plane 1.  */		      \
+	    const char *endp = inptr;					      \
+									      \
+	    ch = cns11643l1_to_ucs4 (&endp,				      \
+				     NEED_LENGTH_TEST ? inend - inptr : 2,    \
+				     0x80);				      \
+	    /* Please note that we need not test for the missing input	      \
+	       characters here anymore.  */				      \
+	    if (ch == UNKNOWN_10646_CHAR)				      \
+	      {								      \
+		/* Illegal input.  */					      \
+		result = GCONV_ILLEGAL_INPUT;				      \
+		break;							      \
+	      }								      \
+									      \
+	    inptr += 2;							      \
+	  }								      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+									      \
+    if (ch <= 0x7f)							      \
+      /* It's plain ASCII.  */						      \
+      *outptr++ = ch;							      \
+    else								      \
+      {									      \
+	/* Try the JIS character sets.  */				      \
+	size_t found;							      \
+									      \
+	found = ucs4_to_cns11643l1 (ch, outptr,				      \
+				    NEED_LENGTH_TEST ? outend - outptr : 2);  \
+	if (NEED_LENGTH_TEST && found == 0)				      \
+	  {								      \
+	    /* We ran out of space.  */					      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+	if (found != UNKNOWN_10646_CHAR)				      \
+	  {								      \
+	    /* It's a CNS 11643, plane 1 character, adjust it for EUC-TW.  */ \
+	    *outptr++ += 0x80;						      \
+	    *outptr++ += 0x80;						      \
+	  }								      \
+	else								      \
+	  {								      \
+	    /* No CNS 11643, plane 1 character.  */			      \
+									      \
+	    found = ucs4_to_cns11643 (ch, outptr + 1,			      \
+				      (NEED_LENGTH_TEST			      \
+				       ? outend - outptr - 1 : 3));	      \
+	    if (NEED_LENGTH_TEST && found == 0)				      \
+	      {								      \
+		/* We ran out of space.  */				      \
+		result = GCONV_INCOMPLETE_INPUT;			      \
+		break;							      \
+	      }								      \
+	    if (found == UNKNOWN_10646_CHAR)				      \
+	      {								      \
+		/* No legal input.  */					      \
+		result = GCONV_ILLEGAL_INPUT;				      \
+		break;							      \
+	      }								      \
+									      \
+	    /* It's a CNS 11643 character, adjust it for EUC-TW.  */	      \
+	    *outptr++ = '\x8e';						      \
+	    *outptr++ += 0xa0;						      \
+	    *outptr++ += 0x80;						      \
+	    *outptr++ += 0x80;						      \
+	  }								      \
+      }									      \
+									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/gb2312.c b/iconvdata/gb2312.c
index 89d716196f..9cde1c8fe7 100644
--- a/iconvdata/gb2312.c
+++ b/iconvdata/gb2312.c
@@ -40,7 +40,7 @@
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
-const uint16_t gb2312_to_ucs[] =
+const uint16_t __gb2312_to_ucs[] =
 {
   [0x0000] = 0x3000, [0x0001] = 0x3001, [0x0002] = 0x3002, [0x0003] = 0x30fb,
   [0x0004] = 0x02c9, [0x0005] = 0x02c7, [0x0006] = 0x00a8, [0x0007] = 0x3003,
@@ -1907,7 +1907,7 @@ const uint16_t gb2312_to_ucs[] =
 };
 
 
-const char gb2312_from_ucs4_tab1[][2] =
+const char __gb2312_from_ucs4_tab1[][2] =
 {
   [0x00] = "\x21\x68", [0x03] = "\x21\x6c", [0x04] = "\x21\x27",
   [0x0c] = "\x21\x63", [0x0d] = "\x21\x40", [0x33] = "\x21\x41",
@@ -1939,7 +1939,7 @@ const char gb2312_from_ucs4_tab1[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char gb2312_from_ucs4_tab2[][2] =
+const char __gb2312_from_ucs4_tab2[][2] =
 {
   [0x0000] = "\x26\x21", [0x0001] = "\x26\x22", [0x0002] = "\x26\x23",
   [0x0003] = "\x26\x24", [0x0004] = "\x26\x25", [0x0005] = "\x26\x26",
@@ -1980,7 +1980,7 @@ const char gb2312_from_ucs4_tab2[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char gb2312_from_ucs4_tab3[][2] =
+const char __gb2312_from_ucs4_tab3[][2] =
 {
   [0x0000] = "\x27\x27", [0x000f] = "\x27\x21", [0x0010] = "\x27\x22",
   [0x0011] = "\x27\x23", [0x0012] = "\x27\x24", [0x0013] = "\x27\x25",
@@ -2027,7 +2027,7 @@ const char gb2312_from_ucs4_tab3[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char gb2312_from_ucs4_tab4[][2] =
+const char __gb2312_from_ucs4_tab4[][2] =
 {
   [0x0000] = "\x21\x2a", [0x0003] = "\x21\x2e", [0x0004] = "\x21\x2f",
   [0x0007] = "\x21\x30", [0x0008] = "\x21\x31", [0x0011] = "\x21\x2d",
@@ -2059,7 +2059,7 @@ const char gb2312_from_ucs4_tab4[][2] =
    But we have a problem here since U+2225 maps to either 0x212C or
    0x214E.  We simply choose the first solution here.
 */
-const char gb2312_from_ucs4_tab5[][2] =
+const char __gb2312_from_ucs4_tab5[][2] =
 {
   [0x0000] = "\x21\x66", [0x0013] = "\x21\x6d", [0x005d] = "\x22\x71",
   [0x005e] = "\x22\x72", [0x005f] = "\x22\x73", [0x0060] = "\x22\x74",
@@ -2100,7 +2100,7 @@ const char gb2312_from_ucs4_tab5[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char gb2312_from_ucs4_tab6[][2] =
+const char __gb2312_from_ucs4_tab6[][2] =
 {
   [0x0000] = "\x22\x59", [0x0001] = "\x22\x5a", [0x0002] = "\x22\x5b",
   [0x0003] = "\x22\x5c", [0x0004] = "\x22\x5d", [0x0005] = "\x22\x5e",
@@ -2142,7 +2142,7 @@ const char gb2312_from_ucs4_tab6[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char gb2312_from_ucs4_tab7[][2] =
+const char __gb2312_from_ucs4_tab7[][2] =
 {
   [0x0000] = "\x21\x21", [0x0001] = "\x21\x22", [0x0002] = "\x21\x23",
   [0x0003] = "\x21\x28", [0x0005] = "\x21\x29", [0x0008] = "\x21\x34",
@@ -2243,7 +2243,7 @@ const char gb2312_from_ucs4_tab7[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char gb2312_from_ucs4_tab8[][2] =
+const char __gb2312_from_ucs4_tab8[][2] =
 {
   [0x0000] = "\x52\x3b", [0x0001] = "\x36\x21", [0x0003] = "\x46\x5f",
   [0x0007] = "\x4d\x72", [0x0008] = "\x55\x49", [0x0009] = "\x48\x7d",
@@ -4523,7 +4523,7 @@ const char gb2312_from_ucs4_tab8[][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char gb2312_from_ucs4_tab9[][2] =
+const char __gb2312_from_ucs4_tab9[][2] =
 {
   [0x0000] = "\x23\x21", [0x0001] = "\x23\x22", [0x0002] = "\x23\x23",
   [0x0003] = "\x21\x67", [0x0004] = "\x23\x25", [0x0005] = "\x23\x26",
diff --git a/iconvdata/gb2312.h b/iconvdata/gb2312.h
index 922fcc8f77..df87950436 100644
--- a/iconvdata/gb2312.h
+++ b/iconvdata/gb2312.h
@@ -25,7 +25,7 @@
 #include <stdint.h>
 
 /* Conversion table.  */
-extern const uint16_t gb2312_to_ucs[];
+extern const uint16_t __gb2312_to_ucs[];
 
 
 static inline wchar_t
@@ -51,127 +51,166 @@ gb2312_to_ucs4 (const char **s, size_t avail, unsigned char offset)
 
   (*s) += 2;
 
-  return gb2312_to_ucs[idx] ?: ((*s) -= 2, UNKNOWN_10646_CHAR);
+  return __gb2312_to_ucs[idx] ?: ((*s) -= 2, UNKNOWN_10646_CHAR);
 }
 
 
-extern const char gb2312_from_ucs4_tab1[][2];
-extern const char gb2312_from_ucs4_tab2[][2];
-extern const char gb2312_from_ucs4_tab3[][2];
-extern const char gb2312_from_ucs4_tab4[][2];
-extern const char gb2312_from_ucs4_tab5[][2];
-extern const char gb2312_from_ucs4_tab6[][2];
-extern const char gb2312_from_ucs4_tab7[][2];
-extern const char gb2312_from_ucs4_tab8[][2];
-extern const char gb2312_from_ucs4_tab9[][2];
+extern const char __gb2312_from_ucs4_tab1[][2];
+extern const char __gb2312_from_ucs4_tab2[][2];
+extern const char __gb2312_from_ucs4_tab3[][2];
+extern const char __gb2312_from_ucs4_tab4[][2];
+extern const char __gb2312_from_ucs4_tab5[][2];
+extern const char __gb2312_from_ucs4_tab6[][2];
+extern const char __gb2312_from_ucs4_tab7[][2];
+extern const char __gb2312_from_ucs4_tab8[][2];
+extern const char __gb2312_from_ucs4_tab9[][2];
 
 static inline size_t
 ucs4_to_gb2312 (wchar_t wch, char *s, size_t avail)
 {
   unsigned int ch = (unsigned int) wch;
   char buf[2];
-  const char *cp = NULL;
+  const char *cp = buf;
 
-  if (ch < 0xa4)
-    return UNKNOWN_10646_CHAR;
-  else if (ch < 0x101)
-    cp = gb2312_from_ucs4_tab1[ch - 0xa4];
-  else if (ch == 0x113)
-    cp = "\x28\x25";
-  else if (ch == 0x11b)
-    cp = "\x28\x27";
-  else if (ch == 0x12b)
-    cp = "\x28\x29";
-  else if (ch == 0x14d)
-    cp = "\x28\x2d";
-  else if (ch == 0x16b)
-    cp = "\x28\x31";
-  else if (ch == 0x1ce)
-    cp = "\x28\x23";
-  else if (ch == 0x1d0)
-    cp = "\x28\x2b";
-  else if (ch == 0x1d2)
-    cp = "\x28\x2f";
-  else if (ch == 0x1d4)
-    cp = "\x28\x33";
-  else if (ch == 0x1d6)
-    cp = "\x28\x35";
-  else if (ch == 0x1d8)
-    cp = "\x28\x36";
-  else if (ch == 0x1da)
-    cp = "\x28\x37";
-  else if (ch == 0x1dc)
-    cp = "\x28\x38";
-  else if (ch == 0x2c7)
-    cp = "\x21\x26";
-  else if (ch == 0x2c9)
-    cp = "\x21\x25";
-  else if (ch >= 0x391 && ch <= 0x3c9)
-    cp = gb2312_from_ucs4_tab2[ch - 0x391];
-  else if (ch >= 0x401 && ch <= 0x451)
-    cp = gb2312_from_ucs4_tab3[ch - 0x401];
-  else if (ch >= 0x2015 && ch <= 0x203b)
-    cp = gb2312_from_ucs4_tab4[ch - 0x2015];
-  else if (ch >= 0x2103 && ch <= 0x22a5)
-    cp = gb2312_from_ucs4_tab5[ch - 0x2103];
-  else if (ch == 0x2313)
-    cp = "\x21\x50";
-  else if (ch >= 0x2460 && ch <= 0x249b)
-    cp = gb2312_from_ucs4_tab6[ch - 0x2460];
-  else if (ch >= 0x2500 && ch <= 0x254b)
+  switch (ch)
     {
+    case 0xa4 ... 0x100:
+      cp = __gb2312_from_ucs4_tab1[ch - 0xa4];
+      break;
+    case 0x113:
+      cp = "\x28\x25";
+      break;
+    case 0x11b:
+      cp = "\x28\x27";
+      break;
+    case 0x12b:
+      cp = "\x28\x29";
+      break;
+    case 0x14d:
+      cp = "\x28\x2d";
+      break;
+    case 0x16b:
+      cp = "\x28\x31";
+      break;
+    case 0x1ce:
+      cp = "\x28\x23";
+      break;
+    case 0x1d0:
+      cp = "\x28\x2b";
+      break;
+    case 0x1d2:
+      cp = "\x28\x2f";
+      break;
+    case 0x1d4:
+      cp = "\x28\x33";
+      break;
+    case 0x1d6:
+      cp = "\x28\x35";
+      break;
+    case 0x1d8:
+      cp = "\x28\x36";
+      break;
+    case 0x1da:
+      cp = "\x28\x37";
+      break;
+    case 0x1dc:
+      cp = "\x28\x38";
+      break;
+    case 0x2c7:
+      cp = "\x21\x26";
+      break;
+    case 0x2c9:
+      cp = "\x21\x25";
+      break;
+    case 0x391 ... 0x3c9:
+      cp = __gb2312_from_ucs4_tab2[ch - 0x391];
+      break;
+    case 0x401 ... 0x451:
+      cp = __gb2312_from_ucs4_tab3[ch - 0x401];
+      break;
+    case 0x2015 ... 0x203b:
+      cp = __gb2312_from_ucs4_tab4[ch - 0x2015];
+      break;
+    case 0x2103 ... 0x22a5:
+      cp = __gb2312_from_ucs4_tab5[ch - 0x2103];
+      break;
+    case 0x2313:
+      cp = "\x21\x50";
+      break;
+    case 0x2460 ... 0x249b:
+      cp = __gb2312_from_ucs4_tab6[ch - 0x2460];
+      break;
+    case 0x2500 ... 0x254b:
       buf[0] = '\x29';
       buf[1] = '\x24' + (ch & 256);
-      cp = buf;
-    }
-  else if (ch == 0x25a0)
-    cp = "\x21\x76";
-  else if (ch == 0x25a1)
-    cp = "\x21\x75";
-  else if (ch == 0x25b2)
-    cp = "\x21\x78";
-  else if (ch == 0x25b3)
-    cp = "\x21\x77";
-  else if (ch == 0x25c6)
-    cp = "\x21\x74";
-  else if (ch == 0x25c7)
-    cp = "\x21\x73";
-  else if (ch == 0x25cb)
-    cp = "\x21\x70";
-  else if (ch == 0x25ce)
-    cp = "\x21\x72";
-  else if (ch == 0x25cf)
-    cp = "\x21\x71";
-  else if (ch == 0x2605)
-    cp = "\x21\x6f";
-  else if (ch == 0x2606)
-    cp = "\x21\x6e";
-  else if (ch == 0x2640)
-    cp = "\x21\x62";
-  else if (ch == 0x2642)
-    cp = "\x21\x61";
-  else if (ch >= 0x3000 && ch <= 0x3129)
-    cp = gb2312_from_ucs4_tab7[ch - 0x3000];
-  else if (ch >= 0x3220 && ch <= 0x3229)
-    {
+      break;
+    case 0x25a0:
+      cp = "\x21\x76";
+      break;
+    case 0x25a1:
+      cp = "\x21\x75";
+      break;
+    case 0x25b2:
+      cp = "\x21\x78";
+      break;
+    case 0x25b3:
+      cp = "\x21\x77";
+      break;
+    case 0x25c6:
+      cp = "\x21\x74";
+      break;
+    case 0x25c7:
+      cp = "\x21\x73";
+      break;
+    case 0x25cb:
+      cp = "\x21\x70";
+      break;
+    case 0x25ce:
+      cp = "\x21\x72";
+      break;
+    case 0x25cf:
+      cp = "\x21\x71";
+      break;
+    case 0x2605:
+      cp = "\x21\x6f";
+      break;
+    case 0x2606:
+      cp = "\x21\x6e";
+      break;
+    case 0x2640:
+      cp = "\x21\x62";
+      break;
+    case 0x2642:
+      cp = "\x21\x61";
+      break;
+    case 0x3000 ... 0x3129:
+      cp = __gb2312_from_ucs4_tab7[ch - 0x3000];
+      break;
+    case 0x3220 ... 0x3229:
       buf[0] = '\x22';
       buf[1] = '\x65' + (ch - 0x3220);
-      cp = buf;
+      break;
+    case 0x4e00 ... 0x9fa0:
+      cp = __gb2312_from_ucs4_tab8[ch - 0x4e00];
+      break;
+    case 0xff01 ... 0xff5e:
+      cp = __gb2312_from_ucs4_tab9[ch - 0xff01];
+      break;
+    case 0xffe0:
+      cp = "\x21\x69";
+      break;
+    case 0xffe1:
+      cp = "\x21\x6a";
+      break;
+    case 0xffe3:
+      cp = "\x23\x7e";
+      break;
+    case 0xffe5:
+      cp = "\x23\x24";
+      break;
+    default:
+      return UNKNOWN_10646_CHAR;
     }
-  else if (ch >= 0x4e00 && ch <= 0x9fa0)
-    cp = gb2312_from_ucs4_tab8[ch - 0x4e00];
-  else if (ch >= 0xff01 && ch <= 0xff5e)
-    cp = gb2312_from_ucs4_tab9[ch - 0xff01];
-  else if (ch == 0xffe0)
-    cp = "\x21\x69";
-  else if (ch == 0xffe1)
-    cp = "\x21\x6a";
-  else if (ch == 0xffe3)
-    cp = "\x23\x7e";
-  else if (ch == 0xffe5)
-    cp = "\x23\x24";
-  else
-    return UNKNOWN_10646_CHAR;
 
   if (cp[1] != '\0' && avail < 2)
     return 0;
diff --git a/iconvdata/hp-roman8.c b/iconvdata/hp-roman8.c
index db36ceab9d..62e29ea463 100644
--- a/iconvdata/hp-roman8.c
+++ b/iconvdata/hp-roman8.c
@@ -1,5 +1,5 @@
 /* Conversion from and to HP-ROMAN8.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,12 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+#include <stdint.h>
+
+/* Get the conversion table.  */
 #include <hp-roman8.h>
-#define NAME "HP-ROMAN8"
+
+#define CHARSET_NAME	"HP-ROMAN8"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/iso646.c b/iconvdata/iso646.c
index 53ca76cb14..3c40c8fd0c 100644
--- a/iconvdata/iso646.c
+++ b/iconvdata/iso646.c
@@ -292,19 +292,17 @@ gconv (struct gconv_step *step, struct gconv_step_data *data,
 
 	      /* Correct the output buffer.  */
 	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
+		memmove (data->outbuf,
+			 &data->outbuf[data->outbufavail - newavail],
+			 newavail);
+	      data->outbufavail = newavail;
 	    }
 	}
       while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
     }
 
   if (written != NULL && data->is_last)
-    *written = do_write;
+    *written += do_write;
 
   return result;
 }
diff --git a/iconvdata/iso6937.c b/iconvdata/iso6937.c
index 21e3ab4898..b121ffa77a 100644
--- a/iconvdata/iso6937.c
+++ b/iconvdata/iso6937.c
@@ -18,11 +18,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
-#include <string.h>
+#include <stdint.h>
 
 /* Data taken from the WG15 tables.  */
-static const wchar_t to_ucs4[256] =
+static const uint32_t to_ucs4[256] =
 {
   /* 0x00 */ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
   /* 0x08 */ 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
@@ -60,7 +59,7 @@ static const wchar_t to_ucs4[256] =
 
 /* The outer array range runs from 0xc1 to 0xcf, the inner range from 0x20
    to 0x7f.  */
-static const wchar_t to_ucs4_comb[15][96] =
+static const uint32_t to_ucs4_comb[15][96] =
 {
   /* 0xc1 */
   {
@@ -371,290 +370,179 @@ static const char from_ucs4[][2] =
 */
 };
 
-/* Direction of the transformation.  */
-static int to_iso6937_object;
-static int from_iso6937_object;
 
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"ISO_6937"
+#define FROM_LOOP		from_iso6937
+#define TO_LOOP			to_iso6937
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM	1
+#define MAX_NEEDED_FROM	2
+#define MIN_NEEDED_TO		4
+
+
+/* First define the conversion function from ISO 6937 to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = *inptr;						      \
+									      \
+    if (ch >= 0xc1 && ch <= 0xcf)					      \
+      {									      \
+	/* Composed character.  First test whether the next character	      \
+	   is also available.  */					      \
+	int ch2;							      \
+									      \
+	if (inptr + 1 >= inend)						      \
+	  {								      \
+	    /* The second character is not available.  Store the	      \
+	       intermediate result.  */					      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch2 = inptr[1];							      \
+									      \
+	if (ch2 < 0x20 || ch2 >= 0x80)					      \
+	  {								      \
+	    /* This is illegal.  */					      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch = to_ucs4_comb[ch - 0xc1][ch2 - 0x20];			      \
+									      \
+	if (ch == 0)							      \
+	  {								      \
+	    /* Illegal character.  */					      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	inptr += 2;							      \
+      }									      \
+    else								      \
+      {									      \
+	ch = to_ucs4[ch];						      \
+									      \
+	if (ch == 0 && *inptr != '\0')					      \
+	  {								      \
+	    /* This is an illegal character.  */			      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+	++inptr;							      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    char tmp[2];							      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    const char *cp;							      \
+									      \
+    if (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0]))		      \
+      {									      \
+	int fail = 0;							      \
+	switch (ch)							      \
+	  {								      \
+	  case 0x2c7:							      \
+	    cp = "\xcf\x20";						      \
+	    break;							      \
+	  case 0x2d8 ... 0x2dd:						      \
+	    {								      \
+	      static const char map[5] = "\xc6\xc7\xca\xce\xcd";	      \
+									      \
+	      tmp[0] = map[ch - 0x2d8];					      \
+	      tmp[1] = ' ';						      \
+	      cp = tmp;							      \
+	    }								      \
+	    break;							      \
+	  case 0x2014:							      \
+	    cp = "\xd0";						      \
+	    break;							      \
+	  case 0x2018:							      \
+	    cp = "\xa9";						      \
+	    break;							      \
+	  case 0x2019:							      \
+	    cp = "\xb9";						      \
+	    break;							      \
+	  case 0x201c:							      \
+	    cp = "\xaa";						      \
+	    break;							      \
+	  case 0x201d:							      \
+	    cp = "\xba";						      \
+	    break;							      \
+	  case 0x2122:							      \
+	    cp = "\xd4";						      \
+	    break;							      \
+	  case 0x2126:							      \
+	    cp = "\xe0";						      \
+	    break;							      \
+	  case 0x215b ... 0x215e:					      \
+	    tmp[0] = 0xdc + (ch - 0x215b);				      \
+	    tmp[1] = '\0';						      \
+	    cp = tmp;							      \
+	    break;							      \
+	  case 0x2190 ... 0x2193:					      \
+	    tmp[0] = 0xac + (ch - 0x2190);				      \
+	    tmp[1] = '\0';						      \
+	    cp = tmp;							      \
+	    break;							      \
+	  case 0x266a:							      \
+	    cp = "\xd5";						      \
+	    break;							      \
+	  default:							      \
+	    cp = NULL;							      \
+	    fail = 1;							      \
+	  }								      \
+									      \
+	if (fail)							      \
+	  {								      \
+	    /* Illegal characters.  */					      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+      }									      \
+    else if (from_ucs4[ch][0] == '\0' && ch != 0)			      \
+      {									      \
+	/* Illegal characters.  */					      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+    else								      \
+      cp = from_ucs4[ch];						      \
+									      \
+    *outptr++ = cp[0];							      \
+    /* Now test for a possible second byte and write this if possible.  */    \
+    if (cp[1] != '\0')							      \
+      {									      \
+	if (NEED_LENGTH_TEST && outptr >= outend)			      \
+	  {								      \
+	    /* The result does not fit into the buffer.  */		      \
+	    result = GCONV_FULL_OUTPUT;					      \
+	    break;							      \
+	  }								      \
+	*outptr++ = cp[1];						      \
+      }									      \
+									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
 
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "ISO_6937") != NULL)
-    step->data = &from_iso6937_object;
-  else if (strcasestr (step->to_name, "ISO_6937") != NULL)
-    step->data = &to_iso6937_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothign to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_iso6937_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = inbuf[cnt];
-		  wchar_t ch;
-
-		  if (inchar >= '\xc1' && inchar <= '\xcf')
-		    {
-		      /* Composed character.  First test whether the next
-			 character is also available.  */
-		      int inchar2;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = inbuf[++cnt];
-
-		      if (inchar2 < '\x20' || inchar2 >= '\x80')
-			/* This is illegal.  */
-			ch = L'\0';
-		      else
-			ch = to_ucs4_comb[inchar - 0xc1][inchar2 - 0x20];
-
-		      if (ch == L'\0')
-			/* Undo the increment for illegal characters.  */
-			--cnt;
-		    }
-		  else
-		    ch = to_ucs4[inchar];
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  char tmp[2];
-		  int ch = *((wchar_t *) (inbuf + cnt));
-		  const char *cp;
-
-		  if (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0]))
-		    {
-		      int fail = 0;
-		      switch (ch)
-			{
-			case 0x2c7:
-			  cp = "\xcf\x20";
-			  break;
-			case 0x2d8 ... 0x2dd:
-			  {
-			    static const char map[5] = "\xc6\xc7\xca\xce\xcd";
-
-			    tmp[0] = map[ch - 0x2d8];
-			    tmp[1] = ' ';
-			    cp = tmp;
-			  }
-			  break;
-			case 0x2014:
-			  cp = "\xd0";
-			  break;
-			case 0x2018:
-			  cp = "\xa9";
-			  break;
-			case 0x2019:
-			  cp = "\xb9";
-			  break;
-			case 0x201c:
-			  cp = "\xaa";
-			  break;
-			case 0x201d:
-			  cp = "\xba";
-			  break;
-			case 0x2122:
-			  cp = "\xd4";
-			  break;
-			case 0x2126:
-			  cp = "\xe0";
-			  break;
-			case 0x215b ... 0x215e:
-			  tmp[0] = 0xdc + (ch - 0x215b);
-			  tmp[1] = '\0';
-			  cp = tmp;
-			  break;
-			case 0x2190 ... 0x2193:
-			  tmp[0] = 0xac + (ch - 0x2190);
-			  tmp[1] = '\0';
-			  cp = tmp;
-			  break;
-			case 0x266a:
-			  cp = "\xd5";
-			  break;
-			default:
-			  cp = NULL;
-			  fail = 1;
-			}
-
-		      if (fail)
-			/* Illegal characters.  */
-			break;
-		    }
-		  else if (ch < 0 || (from_ucs4[ch][0] == '\0' && ch != 0))
-		    break;
-		  else
-		    cp = from_ucs4[ch];
-
-		  outbuf[outchars] = cp[0];
-		  /* Now test for a possible second byte and write this
-		     if possible.  */
-		  if (cp[1] != '\0')
-		    {
-		      if (outchars + 1 >= data->outbufsize)
-			{
-			  /* The result does not fit into the buffer.  */
-			  extra = 1;
-			  break;
-			}
-		      outbuf[++outchars] = cp[1];
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_iso6937_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
 
-  return result;
-}
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/iso8859-1.c b/iconvdata/iso8859-1.c
index b9484a06b7..3e50b79f17 100644
--- a/iconvdata/iso8859-1.c
+++ b/iconvdata/iso8859-1.c
@@ -18,179 +18,44 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
-#include <string.h>
-
-/* Direction of the transformation.  */
-static int to_iso88591_object;
-static int from_iso88591_object;
-
-
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "ISO-8859-1") != NULL)
-    step->data = &from_iso88591_object;
-  else if (strcasestr (step->to_name, "ISO-8859-1") != NULL)
-    step->data = &to_iso88591_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_iso88591_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  *((wchar_t *) (outbuf + outwchars)) =
-		    (unsigned char) inbuf[cnt];
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  if (*((wchar_t *) (inbuf + cnt)) >= L'\0'
-		      && *((wchar_t *) (inbuf + cnt)) <= L'\377')
-		    outbuf[outchars] = *((wchar_t *) (inbuf + cnt));
-		  else
-		    /* Here is where the transliteration would enter the
-		       scene.  */
-		    break;
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_iso88591_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
-
-  return result;
-}
+#include <stdint.h>
+
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"ISO-8859-1"
+#define FROM_LOOP		from_iso8859_1
+#define TO_LOOP			to_iso8859_1
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MIN_NEEDED_TO		4
+
+/* First define the conversion function from ISO 8859-1 to UCS4.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY \
+  *((uint32_t *) outptr)++ = *inptr++;
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			TO_LOOP
+#define BODY \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    if (ch > 0xff)							      \
+      {									      \
+	/* We have an illegal character.  */				      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+    *outptr++ = (unsigned char) ch;					      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/iso8859-10.c b/iconvdata/iso8859-10.c
index eb54e49342..acce3257e3 100644
--- a/iconvdata/iso8859-10.c
+++ b/iconvdata/iso8859-10.c
@@ -1,5 +1,5 @@
 /* Conversion from and to ISO 8859-10.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <iso8859-10.h>
-#define NAME "ISO-8859-10"
+
+#define CHARSET_NAME	"ISO-8859-10"
+#define HAS_HOLES	0	/* All 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/iso8859-2.c b/iconvdata/iso8859-2.c
index fa07b752c6..8a5e62418f 100644
--- a/iconvdata/iso8859-2.c
+++ b/iconvdata/iso8859-2.c
@@ -1,5 +1,5 @@
 /* Conversion from and to ISO 8859-2.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <iso8859-2.h>
-#define NAME "ISO-8859-2"
+
+#define CHARSET_NAME	"ISO-8859-2"
+#define HAS_HOLES	0	/* All 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/iso8859-3.c b/iconvdata/iso8859-3.c
index c31d388ca2..10e52e429f 100644
--- a/iconvdata/iso8859-3.c
+++ b/iconvdata/iso8859-3.c
@@ -1,5 +1,5 @@
 /* Conversion from and to ISO 8859-3.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <iso8859-3.h>
-#define NAME "ISO-8859-3"
+
+#define CHARSET_NAME	"ISO-8859-3"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/iso8859-4.c b/iconvdata/iso8859-4.c
index 7ae98473ca..01cdbf0b98 100644
--- a/iconvdata/iso8859-4.c
+++ b/iconvdata/iso8859-4.c
@@ -1,5 +1,5 @@
 /* Conversion from and to ISO 8859-4.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <iso8859-4.h>
-#define NAME "ISO-8859-4"
+
+#define CHARSET_NAME	"ISO-8859-4"
+#define HAS_HOLES	0	/* All 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/iso8859-5.c b/iconvdata/iso8859-5.c
index b4791f1bf5..edf0f47b5c 100644
--- a/iconvdata/iso8859-5.c
+++ b/iconvdata/iso8859-5.c
@@ -1,5 +1,5 @@
 /* Conversion from and to ISO 8859-5.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <iso8859-5.h>
-#define NAME "ISO-8859-5"
+
+#define CHARSET_NAME	"ISO-8859-5"
+#define HAS_HOLES	0	/* All 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/iso8859-6.c b/iconvdata/iso8859-6.c
index 1e88ec9d22..59ce3f2cc1 100644
--- a/iconvdata/iso8859-6.c
+++ b/iconvdata/iso8859-6.c
@@ -1,5 +1,5 @@
 /* Conversion from and to ISO 8859-6.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <iso8859-6.h>
-#define NAME "ISO-8859-6"
+
+#define CHARSET_NAME	"ISO-8859-6"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/iso8859-7.c b/iconvdata/iso8859-7.c
index 63220bb822..d75e93e204 100644
--- a/iconvdata/iso8859-7.c
+++ b/iconvdata/iso8859-7.c
@@ -1,5 +1,5 @@
 /* Conversion from and to ISO 8859-7.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <iso8859-7.h>
-#define NAME "ISO-8859-7"
+
+#define CHARSET_NAME	"ISO-8859-7"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/iso8859-8.c b/iconvdata/iso8859-8.c
index 2246ae4e52..1612f148f4 100644
--- a/iconvdata/iso8859-8.c
+++ b/iconvdata/iso8859-8.c
@@ -1,5 +1,5 @@
 /* Conversion from and to ISO 8859-8.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <iso8859-8.h>
-#define NAME "ISO-8859-8"
+
+#define CHARSET_NAME	"ISO-8859-8"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/iso8859-9.c b/iconvdata/iso8859-9.c
index 5260362f0c..063f189aba 100644
--- a/iconvdata/iso8859-9.c
+++ b/iconvdata/iso8859-9.c
@@ -1,5 +1,5 @@
 /* Conversion from and to ISO 8859-9.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <iso8859-9.h>
-#define NAME "ISO-8859-9"
+
+#define CHARSET_NAME "ISO-8859-9"
+#define HAS_HOLES	0	/* All 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/jis0201.c b/iconvdata/jis0201.c
index e8e04e171b..65321e4cd7 100644
--- a/iconvdata/jis0201.c
+++ b/iconvdata/jis0201.c
@@ -1,5 +1,5 @@
 /* Mapping tables for JIS0201 handling.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,10 +18,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+#include <stdint.h>
 
 
-const wchar_t jisx0201_to_ucs4[256] =
+const uint32_t __jisx0201_to_ucs4[256] =
 {
   0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
   0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
diff --git a/iconvdata/jis0201.h b/iconvdata/jis0201.h
index 8f920f9ec8..1514c88d73 100644
--- a/iconvdata/jis0201.h
+++ b/iconvdata/jis0201.h
@@ -22,13 +22,13 @@
 #define _JIS0201_H	1
 
 /* Conversion table.  */
-extern const wchar_t jis0201_to_ucs4[];
+extern const uint32_t __jis0201_to_ucs4[];
 
 
-static inline wchar_t
+static inline uint32_t
 jisx0201_to_ucs4 (char ch)
 {
-  wchar_t val = jis0201_to_ucs4[(unsigned char) ch];
+  uint32_t val = __jis0201_to_ucs4[(unsigned char) ch];
 
   if (val == 0 && ch != '\0')
     val = UNKNOWN_10646_CHAR;
@@ -38,7 +38,7 @@ jisx0201_to_ucs4 (char ch)
 
 
 static inline size_t
-ucs4_to_jisx0201 (wchar_t wch, char *s)
+ucs4_to_jisx0201 (uint32_t wch, char *s)
 {
   char ch;
 
diff --git a/iconvdata/jis0208.c b/iconvdata/jis0208.c
index 8db4085a9c..964f73dd26 100644
--- a/iconvdata/jis0208.c
+++ b/iconvdata/jis0208.c
@@ -1,5 +1,5 @@
 /* Mapping tables for JIS0208 handling.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,7 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+#include <stdint.h>
 
 #include "jis0208.h"
 
@@ -58,7 +58,7 @@
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const uint16_t jis0208_to_ucs[0x1e80] =
+const uint16_t __jis0208_to_ucs[0x1e80] =
 {
   [0x0000] = 0x3000, [0x0001] = 0x3001, [0x0002] = 0x3002, [0x0003] = 0xff0c,
   [0x0004] = 0xff0e, [0x0005] = 0x30fb, [0x0006] = 0xff1a, [0x0007] = 0xff1b,
@@ -1783,7 +1783,7 @@ const uint16_t jis0208_to_ucs[0x1e80] =
 };
 
 
-const char jisx0208_from_ucs4_lat1[256][2] =
+const char __jisx0208_from_ucs4_lat1[256][2] =
 {
   [0x005C] = "\x21\x40", [0x00A2] = "\x21\x71", [0x00A3] = "\x21\x72",
   [0x00A7] = "\x21\x78", [0x00A8] = "\x21\x2f", [0x00AC] = "\x22\x4c",
@@ -1814,7 +1814,7 @@ const char jisx0208_from_ucs4_lat1[256][2] =
    printf ("\n");
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char jisx0208_from_ucs4_greek[0xc1][2] =
+const char __jisx0208_from_ucs4_greek[0xc1][2] =
 {
   [0x00] = "\x26\x21", [0x01] = "\x26\x22", [0x02] = "\x26\x23",
   [0x03] = "\x26\x24", [0x04] = "\x26\x25", [0x05] = "\x26\x26",
@@ -1887,7 +1887,7 @@ const char jisx0208_from_ucs4_greek[0xc1][2] =
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
 
-const struct jisx0208_ucs_idx jisx0208_from_ucs_idx[] =
+const struct jisx0208_ucs_idx __jisx0208_from_ucs_idx[] =
 {
   { start: 0x2010, end: 0x2026, idx:     0 },
   { start: 0x2030, end: 0x2033, idx:    23 },
@@ -2596,7 +2596,7 @@ const struct jisx0208_ucs_idx jisx0208_from_ucs_idx[] =
   { start: 0x9f9c, end: 0x9fa0, idx: 14109 },
   { start: 0xff01, end: 0xff5d, idx: 14114 },
   { start: 0xffe3, end: 0xffe5, idx: 14207 },
-  { start: 0 }
+  { start: 0xffff, end: 0xffff, idx:     0 }
 };
 
 
@@ -2637,7 +2637,7 @@ const struct jisx0208_ucs_idx jisx0208_from_ucs_idx[] =
    }
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char jisx0208_from_ucs_tab[14210][2] =
+const char __jisx0208_from_ucs_tab[14210][2] =
 {
   "\x20\x10", "\x00\x00", "\x00\x00", "\x00\x00", "\x00\x00", "\x20\x15",
   "\x20\x16", "\x00\x00", "\x20\x18", "\x20\x19", "\x00\x00", "\x00\x00",
diff --git a/iconvdata/jis0208.h b/iconvdata/jis0208.h
index 94d27642c6..a83ee3bbda 100644
--- a/iconvdata/jis0208.h
+++ b/iconvdata/jis0208.h
@@ -25,12 +25,12 @@
 #include <stdint.h>
 
 /* Conversion table.  */
-extern const uint16_t jis0208_to_ucs[];
+extern const uint16_t __jis0208_to_ucs[];
 
-extern const char jisx0208_from_ucs4_lat1[256][2];
-extern const char jisx0208_from_ucs4_greek[0xc1][2];
-extern const struct jisx0208_ucs_idx jisx0208_from_ucs_idx[];
-extern const char jisx0208_from_ucs_tab[][2];
+extern const char __jisx0208_from_ucs4_lat1[256][2];
+extern const char __jisx0208_from_ucs4_greek[0xc1][2];
+extern const struct jisx0208_ucs_idx __jisx0208_from_ucs_idx[];
+extern const char __jisx0208_from_ucs_tab[][2];
 
 
 /* Struct for table with indeces in UCS mapping table.  */
@@ -42,8 +42,8 @@ struct jisx0208_ucs_idx
 };
 
 
-static inline wchar_t
-jisx0208_to_ucs4 (const char **s, size_t avail, unsigned char offset)
+static inline uint32_t
+jisx0208_to_ucs4 (const unsigned char **s, size_t avail, unsigned char offset)
 {
   unsigned char ch = *(*s);
   unsigned char ch2;
@@ -65,34 +65,38 @@ jisx0208_to_ucs4 (const char **s, size_t avail, unsigned char offset)
 
   (*s) += 2;
 
-  return jis0208_to_ucs[idx] ?: ((*s) -= 2, UNKNOWN_10646_CHAR);
+  return __jis0208_to_ucs[idx] ?: ((*s) -= 2, UNKNOWN_10646_CHAR);
 }
 
 
 static inline size_t
-ucs4_to_jisx0208 (wchar_t wch, char *s, size_t avail)
+ucs4_to_jisx0208 (uint32_t wch, char *s, size_t avail)
 {
   unsigned int ch = (unsigned int) wch;
-  const char *cp = NULL;
+  const char *cp;
 
   if (avail < 2)
     return 0;
 
   if (ch < 0x100)
-    cp = jisx0208_from_ucs4_lat1[ch];
+    cp = __jisx0208_from_ucs4_lat1[ch];
   else if (ch >= 0x391 && ch <= 0x451)
-    cp = jisx0208_from_ucs4_greek[ch];
+    cp = __jisx0208_from_ucs4_greek[ch];
   else
     {
-      const struct jisx0208_ucs_idx *rp = jisx0208_from_ucs_idx;
+      const struct jisx0208_ucs_idx *rp = __jisx0208_from_ucs_idx;
 
+      if (ch >= 0xffff)
+	return UNKNOWN_10646_CHAR;
       while (ch > rp->end)
 	++rp;
       if (ch >= rp->start)
-	cp = jisx0208_from_ucs_tab[rp->idx + ch - rp->start];
+	cp = __jisx0208_from_ucs_tab[rp->idx + ch - rp->start];
+      else
+	return UNKNOWN_10646_CHAR;
     }
 
-  if (cp == NULL || cp[0] == '\0')
+  if (cp[0] == '\0')
     return UNKNOWN_10646_CHAR;
 
   s[0] = cp[0];
diff --git a/iconvdata/jis0212.c b/iconvdata/jis0212.c
index 7484c5e84c..eca645f45a 100644
--- a/iconvdata/jis0212.c
+++ b/iconvdata/jis0212.c
@@ -19,7 +19,6 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <stdint.h>
-#include <wchar.h>
 
 #include <jis0212.h>
 
@@ -54,7 +53,7 @@
 	   $first, $last, $idx);
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const struct jisx0212_idx jisx0212_to_ucs_idx[] =
+const struct jisx0212_idx __jisx0212_to_ucs_idx[] =
 {
  { start: 0x006c, end: 0x0076, idx:     0 },
  { start: 0x007f, end: 0x0081, idx:    11 },
@@ -67,7 +66,7 @@ const struct jisx0212_idx jisx0212_to_ucs_idx[] =
  { start: 0x034e, end: 0x03a4, idx:   107 },
  { start: 0x03ac, end: 0x0402, idx:   194 },
  { start: 0x0582, end: 0x1c2a, idx:   281 },
- { start: 0 },
+ { start: 0xffff, end: 0xffff, idx:     0 },
 };
 
 
@@ -109,7 +108,7 @@ const struct jisx0212_idx jisx0212_to_ucs_idx[] =
    }
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const uint16_t jisx0212_to_ucs[] =
+const uint16_t __jisx0212_to_ucs[] =
 {
   0x02d8, 0x02c7, 0x00b8, 0x02d9, 0x02dd, 0x00af, 0x02db, 0x02da,
   0x007e, 0x0384, 0x0385, 0x00a1, 0x00a6, 0x00bf, 0x00ba, 0x00aa,
@@ -905,7 +904,7 @@ const uint16_t jisx0212_to_ucs[] =
 	   $first, $last, $idx);
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const struct jisx0212_idx jisx0212_from_ucs_idx[] =
+const struct jisx0212_idx __jisx0212_from_ucs_idx[] =
 {
   { start: 0x007e, end: 0x007e, idx:     0 },
   { start: 0x00a1, end: 0x00af, idx:     1 },
@@ -1654,7 +1653,7 @@ const struct jisx0212_idx jisx0212_from_ucs_idx[] =
   { start: 0x9f68, end: 0x9f7d, idx: 13393 },
   { start: 0x9f8f, end: 0x9f97, idx: 13415 },
   { start: 0x9f9e, end: 0x9fa5, idx: 13424 },
-  { start: 0 }
+  { start: 0xffff, end: 0xffff, idx:     0 }
 };
 
 
@@ -1697,7 +1696,7 @@ const struct jisx0212_idx jisx0212_from_ucs_idx[] =
    }
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-const char jisx0212_from_ucs[][2] =
+const char __jisx0212_from_ucs[][2] =
 {
   "\x7e\x00", "\xa1\x00", "\x00\x00", "\x00\x00", "\xa4\x00", "\x00\x00",
   "\xa6\x00", "\x00\x00", "\x00\x00", "\xa9\x00", "\xaa\x00", "\x00\x00",
diff --git a/iconvdata/jis0212.h b/iconvdata/jis0212.h
index cf5d919109..4930437128 100644
--- a/iconvdata/jis0212.h
+++ b/iconvdata/jis0212.h
@@ -34,20 +34,20 @@ struct jisx0212_idx
 };
 
 /* Conversion table.  */
-extern const struct jisx0212_idx jisx0212_to_ucs_idx[];
-extern const uint16_t jisx0212_to_ucs[];
+extern const struct jisx0212_idx __jisx0212_to_ucs_idx[];
+extern const uint16_t __jisx0212_to_ucs[];
 
-extern const struct jisx0212_idx jisx0212_from_ucs_idx[];
-extern const char jisx0212_from_ucs[][2];
+extern const struct jisx0212_idx __jisx0212_from_ucs_idx[];
+extern const char __jisx0212_from_ucs[][2];
 
 
 static inline wchar_t
-jisx0212_to_ucs4 (const char **s, size_t avail, unsigned char offset)
+jisx0212_to_ucs4 (const unsigned char **s, size_t avail, unsigned char offset)
 {
-  const struct jisx0212_idx *rp = jisx0212_to_ucs_idx;
+  const struct jisx0212_idx *rp = __jisx0212_to_ucs_idx;
   unsigned char ch = *(*s);
   unsigned char ch2;
-  wchar_t wch = L'\0';
+  uint32_t wch = 0;
   int idx;
 
   if (ch < offset || (ch - offset) <= 0x6d || (ch - offset) > 0xea)
@@ -62,10 +62,10 @@ jisx0212_to_ucs4 (const char **s, size_t avail, unsigned char offset)
 
   idx = (ch - 0x21 - offset) * 94 + (ch2 - 0x21 - offset);
 
-  while (idx < rp->start)
+  while (idx > rp->end)
     ++rp;
-  if (idx <= rp->end)
-    wch = jisx0212_to_ucs[rp->idx + idx - rp->start];
+  if (idx >= rp->start)
+    wch = __jisx0212_to_ucs[rp->idx + idx - rp->start];
 
   if (wch != L'\0')
     (*s) += 2;
@@ -79,16 +79,20 @@ jisx0212_to_ucs4 (const char **s, size_t avail, unsigned char offset)
 static inline size_t
 ucs4_to_jisx0212 (wchar_t wch, char *s, size_t avail)
 {
-  const struct jisx0212_idx *rp = jisx0212_from_ucs_idx;
+  const struct jisx0212_idx *rp = __jisx0212_from_ucs_idx;
   unsigned int ch = (unsigned int) wch;
-  const char *cp = NULL;
+  const char *cp;
 
+  if (ch >= 0xffff)
+    return UNKNOWN_10646_CHAR;
   while (ch > rp->end)
     ++rp;
   if (ch >= rp->start)
-    cp = jisx0212_from_ucs[rp->idx + ch - rp->start];
+    cp = __jisx0212_from_ucs[rp->idx + ch - rp->start];
+  else
+    return UNKNOWN_10646_CHAR;
 
-  if (cp == NULL || cp[0] == '\0')
+  if (cp[0] == '\0')
     return UNKNOWN_10646_CHAR;
 
   s[0] = cp[0];
diff --git a/iconvdata/johab.c b/iconvdata/johab.c
index c9912a71d0..6a582c0b70 100644
--- a/iconvdata/johab.c
+++ b/iconvdata/johab.c
@@ -1,7 +1,8 @@
 /* Mapping tables for JOHAB handling.
    Copyright (C) 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jungshik Shin <jshin@pantheon.yale.edu>, 1998.
+   Contributed by Jungshik Shin <jshin@pantheon.yale.edu>
+   and Ulrich Drepper <drepper@cygnus.com>, 1998.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
@@ -18,16 +19,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
 #include <stdint.h>
-#include <string.h>
-#include <wchar.h>
 #include <ksc5601.h>
 
-/* Direction of the transformation.  */
-static int to_johab_object;
-static int from_johab_object;
-
 /* The table for Bit pattern to Hangul Jamo
    5 bits each are used to encode
    leading consonants(19 + 1 filler), medial vowels(21 + 1 filler)
@@ -37,19 +31,19 @@ static int from_johab_object;
    0 : Filler, -1: invalid, >= 1 : valid
 
  */
-const int init[32] =
+static const int init[32] =
 {
   -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
   19, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 };
-const int mid[32] =
+static const int mid[32] =
 {
   -1, -1, 0, 1, 2, 3, 4, 5,
   -1, -1, 6, 7, 8, 9, 10, 11,
   -1, -1, 12, 13, 14, 15, 16, 17,
   -1, -1, 18, 19, 20, 21, -1, -1
 };
-const int final[32] =
+static const int final[32] =
 {
   -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
   -1, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, -1, -1
@@ -63,14 +57,14 @@ const int final[32] =
    block [0x3131,0x314e] or Hangul Conjoining Jamo block, [0x1100,0x11ff]
 
  */
-const wchar_t init_to_ucs[19] =
+static const uint32_t init_to_ucs[19] =
 {
   0x3131, 0x3132, 0x3134, 0x3137, 0x3138, 0x3139, 0x3141, 0x3142,
   0x3143, 0x3145, 0x3146, 0x3147, 0x3148, 0x3149, 0x314a, 0x314b,
   0x314c, 0x314d, 0x314e
 };
 
-const wchar_t final_to_ucs[27] =
+static const uint32_t final_to_ucs[27] =
 {
   L'\0', L'\0', 0x3133, L'\0', 0x3135, 0x3136, L'\0', L'\0',
   0x313a, 0x313b, 0x314c, 0x313d, 0x313e, 0x313f,
@@ -88,7 +82,7 @@ const wchar_t final_to_ucs[27] =
    to get the same result arithmetically.
 
  */
-const int init_to_bit[19] =
+static const int init_to_bit[19] =
 {
   0x8800, 0x8c00, 0x9000, 0x9400, 0x9800, 0x9c00,
   0xa000, 0xa400, 0xa800, 0xac00, 0xb000, 0xb400,
@@ -96,7 +90,7 @@ const int init_to_bit[19] =
   0xd000
 };
 
-const int mid_to_bit[21] =
+static const int mid_to_bit[21] =
 {
           0x0060, 0x0080, 0x00a0, 0x00c0, 0x00e0,
   0x0140, 0x0160, 0x0180, 0x01a0, 0x01c0, 0x1e0,
@@ -104,7 +98,7 @@ const int mid_to_bit[21] =
   0x0340, 0x0360, 0x0380, 0x03a0
 };
 
-const int final_to_bit[28] =
+static const int final_to_bit[28] =
 {
   1, 2, 3, 4, 5, 6, 7, 8, 9, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
   0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d
@@ -118,7 +112,7 @@ const int final_to_bit[28] =
    2. Unicode 2.0 manual
 
  */
-const uint16_t jamo_from_ucs_table[51] =
+static const uint16_t jamo_from_ucs_table[51] =
 {
   0x8841, 0x8c41,
   0x8444,
@@ -137,21 +131,20 @@ const uint16_t jamo_from_ucs_table[51] =
 };
 
 
-static inline wchar_t
-johab_sym_hanja_to_ucs (int idx, int c1, int c2)
+static inline uint32_t
+johab_sym_hanja_to_ucs (uint_fast32_t idx, uint_fast32_t c1, uint_fast32_t c2)
 {
   if (idx <= 0xdefe)
-    return (wchar_t) ksc5601_sym_to_ucs[(c1 - 0xd9) * 188 + c2
-					- (c2 > 0x90 ? 0x43 : 0x31)];
+    return (uint32_t) __ksc5601_sym_to_ucs[(c1 - 0xd9) * 188 + c2
+					   - (c2 > 0x90 ? 0x43 : 0x31)];
   else
-    return (wchar_t) ksc5601_hanja_to_ucs[(c1 - 0xe0) * 188 + c2
-					  - (c2 > 0x90 ? 0x43 : 0x31)];
+    return (uint32_t) __ksc5601_hanja_to_ucs[(c1 - 0xe0) * 188 + c2
+					     - (c2 > 0x90 ? 0x43 : 0x31)];
 }
 
 static uint16_t
-johab_hanja_from_ucs (wchar_t ch)
+johab_hanja_from_ucs (uint32_t ch)
 {
-
   uint16_t idx;
   if (ucs4_to_ksc5601_hanja (ch, &idx))
     {
@@ -168,7 +161,7 @@ johab_hanja_from_ucs (wchar_t ch)
 }
 
 static uint16_t
-johab_sym_from_ucs (wchar_t ch)
+johab_sym_from_ucs (uint32_t ch)
 {
   uint16_t idx;
   if (ucs4_to_ksc5601_sym (ch, &idx))
@@ -186,9 +179,8 @@ johab_sym_from_ucs (wchar_t ch)
 }
 
 
-
 static inline void
-johab_from_ucs4 (wchar_t ch, unsigned char *cp)
+johab_from_ucs4 (uint32_t ch, unsigned char *cp)
 {
   if (ch >= 0x7f)
     {
@@ -215,315 +207,205 @@ johab_from_ucs4 (wchar_t ch, unsigned char *cp)
       else
 	idx = johab_sym_from_ucs (ch);
 
-      *cp = (char) (idx / 256);
-      *(cp + 1) = (char) (idx & 0xff);
+      cp[0] = (unsigned char) (idx / 256);
+      cp[1] = (unsigned char) (idx & 0xff);
 
     }
   else
     {
-      *cp = (char) (0x7f & ch);
-      *(cp + 1) = (char) 0;
+      cp[0] = (unsigned char) ch;
+      cp[1] = 0;
     }
-
-}
-
-
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "JOHAB") != NULL)
-    step->data = &from_johab_object;
-  else if (strcasestr (step->to_name, "JOHAB") != NULL)
-    step->data = &to_johab_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
 }
 
 
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t * written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_johab_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = (unsigned char) inbuf[cnt];
-		  wchar_t ch;
-		  /* half-width Korean Currency WON sign
-		     if (inchar == 0x5c)
-		     ch =  0x20a9;
-		     else if (inchar < 0x7f)
-		     ch = (wchar_t) inchar;
-		  */
-		  if (inchar < 0x7f)
-		    ch = (wchar_t) inchar;
-
-		  /* Johab : 1. Hangul
-		     1st byte : 0x84-0xd3
-		     2nd byte : 0x41-0x7e, 0x81-0xfe
-		     2. Hanja & Symbol  :
-		     1st byte : 0xd8-0xde, 0xe0-0xf9
-		     2nd byte : 0x31-0x7e, 0x91-0xfe
-		     0xd831-0xd87e and 0xd891-0xd8fe are user-defined area */
-
-		  else if (inchar > 0xf9 || inchar == 0xdf
-			   || (inchar > 0x7e && inchar < 0x84)
-			   || (inchar > 0xd3 && inchar < 0xd9))
-		    /* These are illegal.  */
-		    ch = L'\0';
-		  else
-		    {
-		      /* Two-byte character.  First test whether the next
-		         character is also available.  */
-		      int inchar2;
-		      int idx;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = (unsigned char) inbuf[++cnt];
-		      idx = inchar * 256 + inchar2;
-		      if (inchar <= 0xd3)
-			{	/* Hangul */
-			  int i, m, f;
-			  i = init[(idx & 0x7c00) >> 10];
-			  m = mid[(idx & 0x03e0) >> 5];
-			  f = final[idx & 0x001f];
-			  if (i == -1 || m == -1 || f == -1)
-			    /* This is illegal.  */
-			    ch = L'\0';
-			  else if (i > 0 && m > 0)
-			    ch = ((i - 1) * 21 + (m - 1)) * 28 + f + 0xac00;
-			  else if (i > 0 && m == 0 & f == 0)
-			    ch = init_to_ucs[i - 1];
-			  else if (i == 0 && m > 0 & f == 0)
-			    ch = 0x314e + m;	/* 0x314f + m - 1 */
-			  else if (i == 0 && m == 0 & f > 0)
-			    ch = final_to_ucs[f - 1];	/* round trip?? */
-			  else
-			    /* This is illegal.  */
-			    ch = L'\0';
-			}
-		      else
-			{
-			  if (inchar2 < 0x31
-			      || (inchar2 > 0x7e && inchar2 < 0x91)
-			      || inchar2 == 0xff)
-			    /* This is illegal.  */
-			    ch = L'\0';
-			  else if (inchar == 0xda
-				   && inchar2 > 0xa0 && inchar2 < 0xd4)
-			    /* This is illegal.  */
-			    /* Modern Hangul Jaso is defined elsewhere
-			       in Johab */
-			    ch = L'\0';
-			  else
-			    {
-			      ch = johab_sym_hanja_to_ucs (idx, inchar,
-							   inchar2);
-			      /*                if (idx <= 0xdefe)
-			         ch = ksc5601_sym_to_ucs[(inchar - 0xd9) * 192
-			         + inchar2
-			         -  (inchar2>0x90 ? 0x43 : 0x31)];
-
-			         else
-			         ch = ksc5601_hanja_to_ucs[(inchar - 0xe0) *192
-			         + inchar2
-			         -  (inchar2>0x90 ? 0x43 : 0x31)];
-			       */
-			    }
-			}
-
-		      if (ch == L'\0')
-			--cnt;
-		    }
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  wchar_t ch = *((wchar_t *) (inbuf + cnt));
-		  unsigned char cp[2];
-		  /*
-		    if (ch >= (sizeof (from_ucs4_lat1)
-			/ sizeof (from_ucs4_lat1[0])))
-		      {
-			if (ch >= 0x0391 && ch <= 0x0451)
-			  cp = from_ucs4_greek[ch - 0x391];
-			else if (ch >= 0x2010 && ch <= 0x9fa0)
-			  cp = from_ucs4_cjk[ch - 0x02010];
-			else
-			  break;
-		      }
-		    else
-		      cp = from_ucs4_lat1[ch];
-		  */
-		  johab_from_ucs4 (ch, cp);
-
-		  if (cp[0] == '\0' && ch != 0)
-		    /* Illegal character.  */
-		    break;
-
-		  outbuf[outchars] = cp[0];
-		  /* Now test for a possible second byte and write this
-		     if possible.  */
-		  if (cp[1] != '\0')
-		    {
-		      if (outchars + 1 >= data->outbufsize)
-			{
-			  /* The result does not fit into the buffer.  */
-			  extra = 1;
-			  break;
-			}
-		      outbuf[++outchars] = cp[1];
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-		         input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_johab_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
-
-  return result;
-}
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"JOHAB"
+#define FROM_LOOP		from_johab
+#define TO_LOOP			to_johab
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		2
+#define MIN_NEEDED_TO		4
+
+
+/* First define the conversion function from JOHAB to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = *inptr;						      \
+									      \
+    /* half-width Korean Currency WON sign				      \
+       if (ch == 0x5c)							      \
+	 ch =  0x20a9;							      \
+       else if (ch < 0x7f)						      \
+	 ch = (wchar_t) ch;						      \
+    */									      \
+    if (ch < 0x7f)							      \
+      /* Plain ASCII.  */						      \
+      ++inptr;								      \
+    /* Johab : 1. Hangul						      \
+       1st byte : 0x84-0xd3						      \
+       2nd byte : 0x41-0x7e, 0x81-0xfe					      \
+       2. Hanja & Symbol  :						      \
+       1st byte : 0xd8-0xde, 0xe0-0xf9					      \
+       2nd byte : 0x31-0x7e, 0x91-0xfe					      \
+       0xd831-0xd87e and 0xd891-0xd8fe are user-defined area */		      \
+    else								      \
+      {									      \
+	if (ch > 0xf9 || ch == 0xdf || (ch > 0x7e && ch < 0x84)		      \
+	    || (ch > 0xd3 && ch < 0xd9))				      \
+	  {								      \
+	    /* These are illegal.  */					      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+	else								      \
+	  {								      \
+	    /* Two-byte character.  First test whether the next		      \
+	       character is also available.  */				      \
+	    uint32_t ch2;						      \
+	    uint_fast32_t idx;						      \
+									      \
+	    if (NEED_LENGTH_TEST && inptr + 1 >= inend)			      \
+	      {								      \
+		/* The second character is not available.  Store the	      \
+		   intermediate result.  */				      \
+		result = GCONV_INCOMPLETE_INPUT;			      \
+		break;							      \
+	      }								      \
+									      \
+	    ch2 = inptr[1];						      \
+	    idx = ch * 256 + ch2;					      \
+	    if (ch <= 0xd3)						      \
+	      {								      \
+		/* Hangul */						      \
+		uint_fast32_t i, m, f;					      \
+									      \
+		i = init[(idx & 0x7c00) >> 10];				      \
+		m = mid[(idx & 0x03e0) >> 5];				      \
+		f = final[idx & 0x001f];				      \
+									      \
+		if (i == -1 || m == -1 || f == -1)			      \
+		  {							      \
+		    /* This is illegal.  */				      \
+		    result = GCONV_ILLEGAL_INPUT;			      \
+		    break;						      \
+		  }							      \
+		else if (i > 0 && m > 0)				      \
+		  ch = ((i - 1) * 21 + (m - 1)) * 28 + f + 0xac00;	      \
+		else if (i > 0 && m == 0 & f == 0)			      \
+		  ch = init_to_ucs[i - 1];				      \
+		else if (i == 0 && m > 0 & f == 0)			      \
+		  ch = 0x314e + m;	/* 0x314f + m - 1 */		      \
+		else if (i == 0 && m == 0 & f > 0)			      \
+		  ch = final_to_ucs[f - 1];	/* round trip?? */	      \
+		else							      \
+		  {							      \
+		    /* This is illegal.  */				      \
+		    result = GCONV_ILLEGAL_INPUT;			      \
+		    break;						      \
+		  }							      \
+	      }								      \
+	    else							      \
+	      {								      \
+		if (ch2 < 0x31 || (ch2 > 0x7e && ch2 < 0x91) || ch2 == 0xff)  \
+		  {							      \
+		    /* This is illegal.  */				      \
+		    result = GCONV_ILLEGAL_INPUT;			      \
+		    break;						      \
+		  }							      \
+		else if (ch == 0xda && ch2 > 0xa0 && ch2 < 0xd4)	      \
+		  {							      \
+		    /* This is illegal.  Modern Hangul Jaso is defined	      \
+		       elsewhere in Johab */				      \
+		    result = GCONV_ILLEGAL_INPUT;			      \
+		    break;						      \
+		  }							      \
+		else							      \
+		  {							      \
+		    ch = johab_sym_hanja_to_ucs (idx, ch, ch2);		      \
+		    /* if (idx <= 0xdefe)				      \
+			 ch = __ksc5601_sym_to_ucs[(ch - 0xd9) * 192	      \
+						   + ch2 - (ch2 > 0x90	      \
+							    ? 0x43 : 0x31)];  \
+		       else						      \
+		         ch = __ksc5601_hanja_to_ucs[(ch - 0xe0) *192	      \
+						     + ch2 -  (ch2 > 0x90     \
+							       ?0x43 : 0x31)];\
+		    */							      \
+		  }							      \
+	      }								      \
+	  }								      \
+									      \
+	if (ch == 0)							      \
+	  {								      \
+	    /* This is an illegal character.  */			      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	inptr += 2;							      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    unsigned char cp[2];						      \
+    /*									      \
+       if (ch >= (sizeof (from_ucs4_lat1) / sizeof (from_ucs4_lat1[0])))      \
+	 {								      \
+	   if (ch >= 0x0391 && ch <= 0x0451)				      \
+	     cp = from_ucs4_greek[ch - 0x391];				      \
+	   else if (ch >= 0x2010 && ch <= 0x9fa0)			      \
+	     cp = from_ucs4_cjk[ch - 0x02010];				      \
+	   else								      \
+	     break;							      \
+	 }								      \
+       else								      \
+	 cp = from_ucs4_lat1[ch];					      \
+    */									      \
+    johab_from_ucs4 (ch, cp);						      \
+									      \
+    if (cp[0] == '\0' && ch != 0)					      \
+      {									      \
+	/* Illegal character.  */					      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *outptr++ = cp[0];							      \
+    /* Now test for a possible second byte and write this if possible.  */    \
+    if (cp[1] != '\0')							      \
+      {									      \
+	if (NEED_LENGTH_TEST && outptr >= outend)			      \
+	  {								      \
+	    /* The result does not fit into the buffer.  */		      \
+	    --outptr;							      \
+	    result = GCONV_FULL_OUTPUT;					      \
+	    break;							      \
+	  }								      \
+	*outptr++ = cp[1];						      \
+      }									      \
+									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/koi-8.c b/iconvdata/koi-8.c
index 2228456801..b2332c2a6a 100644
--- a/iconvdata/koi-8.c
+++ b/iconvdata/koi-8.c
@@ -1,5 +1,5 @@
 /* Conversion from and to KOI-8.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Get the conversion table.  */
+#include <stdint.h>
 #include <koi-8.h>
-#define NAME "KOI-8"
+
+#define CHARSET_NAME	"KOI-8"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-generic.c>
diff --git a/iconvdata/koi8-r.c b/iconvdata/koi8-r.c
index 502132b338..ee317bd25b 100644
--- a/iconvdata/koi8-r.c
+++ b/iconvdata/koi8-r.c
@@ -1,5 +1,5 @@
 /* Conversion from and to KOI8-R.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,12 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+#include <stdint.h>
+
+/* Specify the conversion table.  */
 #define TABLES <koi8-r.h>
-#define NAME "KOI8-R"
+
+#define CHARSET_NAME	"KOI8-R"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-gap.c>
diff --git a/iconvdata/ksc5601.c b/iconvdata/ksc5601.c
index c919425aa7..da64c430f4 100644
--- a/iconvdata/ksc5601.c
+++ b/iconvdata/ksc5601.c
@@ -18,7 +18,7 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+#include <stdint.h>
 #include "ksc5601.h"
 
 /*
@@ -50,7 +50,7 @@ perl tab21.pl > ksc_hangul1.tb
 */
 
 
-const uint16_t ksc5601_hangul_to_ucs[KSC5601_HANGUL]=
+const uint16_t __ksc5601_hangul_to_ucs[KSC5601_HANGUL]=
 {
   0xac00, 0xac01, 0xac04, 0xac07, 0xac08, 0xac09, 0xac0a, 0xac10,
   0xac11, 0xac12, 0xac13, 0xac14, 0xac15, 0xac16, 0xac17, 0xac19,
@@ -369,7 +369,7 @@ grep -v '# HANGUL SYLLABLE' | perl tab11.pl  > ksc_sym1.tb
 
 */
 
-const uint16_t ksc5601_sym_to_ucs[] =
+const uint16_t __ksc5601_sym_to_ucs[] =
 {
   [0x0000] = 0x3000, [0x0001] = 0x3001, [0x0002] = 0x3002, [0x0003] = 0x00b7,
   [0x0004] = 0x2025, [0x0005] = 0x2026, [0x0006] = 0x00a8, [0x0007] = 0x3003,
@@ -646,7 +646,7 @@ perl tab12.pl > ksc_sym2.tb
 
 */
 
-const uint16_t ksc5601_sym_from_ucs[KSC5601_SYMBOL][2] =
+const uint16_t __ksc5601_sym_from_ucs[KSC5601_SYMBOL][2] =
 {
   {0x00a1, 0x222e}, {0x00a4, 0x2234}, {0x00a7, 0x2157}, {0x00a8, 0x2127},
   {0x00aa, 0x2823}, {0x00ad, 0x2129}, {0x00b0, 0x2146}, {0x00b1, 0x213e},
@@ -914,7 +914,7 @@ perl tab21.pl > ksc_hanja1.tb
    printf ("\n");
 */
 
-const uint16_t ksc5601_hanja_to_ucs[KSC5601_HANJA]=
+const uint16_t __ksc5601_hanja_to_ucs[KSC5601_HANJA]=
 {
   0x4f3d, 0x4f73, 0x5047, 0x50f9, 0x52a0, 0x53ef, 0x5475, 0x54e5,
   0x5609, 0x5ac1, 0x5bb6, 0x6687, 0x67b6, 0x67b7, 0x67ef, 0x6b4c,
@@ -1550,7 +1550,7 @@ awk '{print $2,$1}' | sort -u | perl tab12.pl > ksc_hanja2.tb
 
 */
 
-const uint16_t ksc5601_hanja_from_ucs[KSC5601_HANJA][2]=
+const uint16_t __ksc5601_hanja_from_ucs[KSC5601_HANJA][2]=
 {
   {0x4e00, 0x6c69}, {0x4e01, 0x6f4b}, {0x4e03, 0x7652}, {0x4e07, 0x5832},
   {0x4e08, 0x6d5b}, {0x4e09, 0x5f32}, {0x4e0a, 0x5f3e}, {0x4e0b, 0x793b},
diff --git a/iconvdata/ksc5601.h b/iconvdata/ksc5601.h
index 0d86c7b253..8a5c40e5dd 100644
--- a/iconvdata/ksc5601.h
+++ b/iconvdata/ksc5601.h
@@ -28,18 +28,18 @@
 #include <stdint.h>
 
 /* Conversion table.  */
-extern const uint16_t ksc5601_hangul_to_ucs[KSC5601_HANGUL];
-extern const uint16_t ksc5601_sym_to_ucs[];
-extern const uint16_t ksc5601_sym_from_ucs[KSC5601_SYMBOL][2];
-extern const uint16_t ksc5601_hanja_to_ucs[KSC5601_HANJA];
-extern const uint16_t ksc5601_hanja_from_ucs[KSC5601_HANJA][2];
+extern const uint16_t __ksc5601_hangul_to_ucs[KSC5601_HANGUL];
+extern const uint16_t __ksc5601_sym_to_ucs[];
+extern const uint16_t __ksc5601_sym_from_ucs[KSC5601_SYMBOL][2];
+extern const uint16_t __ksc5601_hanja_to_ucs[KSC5601_HANJA];
+extern const uint16_t __ksc5601_hanja_from_ucs[KSC5601_HANJA][2];
 
 
 /*
 static inline wchar_t
 ksc5601_to_ucs4 (char **s, size_t avail)
 */
-static inline wchar_t
+static inline uint32_t
 ksc5601_to_ucs4 (uint16_t s)
 {
   unsigned char ch = s / 256;
@@ -61,23 +61,25 @@ ksc5601_to_ucs4 (uint16_t s)
      Hangul in KS C 5601 : row 16 - row 40 */
 
   if (idx >= 1410 && idx < 3760)
-    return ksc5601_hangul_to_ucs[idx-1410];
+    return __ksc5601_hangul_to_ucs[idx-1410];
   else if (idx > 3854)
     /* Hanja : row 42 - row 93 : 3854 = 94 * (42-1) */
-   return ksc5601_hanja_to_ucs[idx-3854];
+   return __ksc5601_hanja_to_ucs[idx-3854];
   else
-    return ksc5601_sym_to_ucs[idx] ?: UNKNOWN_10646_CHAR;
+    return __ksc5601_sym_to_ucs[idx] ?: UNKNOWN_10646_CHAR;
 }
 
 static inline size_t
-ucs4_to_ksc5601_hangul (wchar_t wch, uint16_t *s)
+ucs4_to_ksc5601_hangul (uint32_t wch, uint16_t *s)
 {
-  int l=0,m,u=KSC5601_HANGUL-1;
-  wchar_t try;
+  int l = 0;
+  int m;
+  int u = KSC5601_HANGUL - 1;
+  uint32_t try;
 
   while (l <= u)
     {
-      try = (wchar_t) ksc5601_hangul_to_ucs[m=(l+u)/2];
+      try = (uint32_t) __ksc5601_hangul_to_ucs[m=(l+u)/2];
       if (try > wch)
 	u = m - 1;
       else if (try < wch)
@@ -93,21 +95,24 @@ ucs4_to_ksc5601_hangul (wchar_t wch, uint16_t *s)
 
 
 static inline size_t
-ucs4_to_ksc5601_hanja (wchar_t wch, uint16_t *s)
+ucs4_to_ksc5601_hanja (uint32_t wch, uint16_t *s)
 {
-  int l=0,m,u=KSC5601_HANJA-1;
-  wchar_t try;
+  int l = 0;
+  int m;
+  int u = KSC5601_HANJA - 1;
+  uint32_t try;
 
   while (l <= u)
     {
-      try = (wchar_t) ksc5601_hanja_from_ucs[m=(l+u)/2][0];
+      m = (l + u) / 2;
+      try = (uint32_t) __ksc5601_hanja_from_ucs[m][0];
       if (try > wch)
 	u=m-1;
       else if (try < wch)
 	l = m + 1;
       else
 	{
-	  *s = ksc5601_hanja_from_ucs[m][1];
+	  *s = __ksc5601_hanja_from_ucs[m][1];
 	  return 2;
 	}
     }
@@ -115,24 +120,24 @@ ucs4_to_ksc5601_hanja (wchar_t wch, uint16_t *s)
 }
 
 static inline  size_t
-ucs4_to_ksc5601_sym (wchar_t wch, uint16_t *s)
+ucs4_to_ksc5601_sym (uint32_t wch, uint16_t *s)
 {
   int l = 0;
   int m;
   int u = KSC5601_SYMBOL - 1;
-  wchar_t try;
+  uint32_t try;
 
   while (l <= u)
     {
       m = (l + u) / 2;
-      try = ksc5601_sym_from_ucs[m][0];
+      try = __ksc5601_sym_from_ucs[m][0];
       if (try > wch)
 	u = m - 1;
       else if (try < wch)
 	l = m + 1;
       else
 	{
-	  *s = ksc5601_sym_from_ucs[m][1];
+	  *s = __ksc5601_sym_from_ucs[m][1];
 	  return 2;
 	}
     }
@@ -146,13 +151,13 @@ ucs4_to_ksc5601 (wchar_t wch, char **s, size_t avail)
 */
 
 static inline size_t
-ucs4_to_ksc5601 (wchar_t ch, uint16_t *s)
+ucs4_to_ksc5601 (uint32_t ch, uint16_t *s)
 {
   *s = (uint16_t) UNKNOWN_10646_CHAR;  /* FIXIT */
 
   if (ch >= 0xac00 && ch <= 0xd7a3)
     return ucs4_to_ksc5601_hangul (ch, s);
-  else if (ch >= 0x4e00 && ch <= 0x9fff ||  ch >= 0xf900 && ch <= 0xfa0b)
+  else if (ch >= 0x4e00 && ch <= 0x9fff || ch >= 0xf900 && ch <= 0xfa0b)
     return ucs4_to_ksc5601_hanja (ch, s);
   else
     return ucs4_to_ksc5601_sym (ch, s);
diff --git a/iconvdata/latin-greek-1.c b/iconvdata/latin-greek-1.c
index d62969a77d..37ccf09c09 100644
--- a/iconvdata/latin-greek-1.c
+++ b/iconvdata/latin-greek-1.c
@@ -1,5 +1,5 @@
 /* Conversion from and to LATIN-GREEK-1.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Specify the conversion table.  */
 #define TABLES <latin-greek-1.h>
-#define NAME "LATIN-GREEK-1"
+
+#define CHARSET_NAME	"LATIN-GREEK-1"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-gap.c>
diff --git a/iconvdata/latin-greek.c b/iconvdata/latin-greek.c
index 90270e0e07..8810f4a2e0 100644
--- a/iconvdata/latin-greek.c
+++ b/iconvdata/latin-greek.c
@@ -1,5 +1,5 @@
 /* Conversion from and to LATIN-GREEK.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -18,7 +18,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <wchar.h>
+/* Specify the conversion table.  */
 #define TABLES <latin-greek.h>
-#define NAME "LATIN-GREEK"
+
+#define CHARSET_NAME	"LATIN-GREEK"
+#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+
 #include <8bit-gap.c>
diff --git a/iconvdata/run-iconv-test.sh b/iconvdata/run-iconv-test.sh
index ebafa2f298..af6a136c4a 100755
--- a/iconvdata/run-iconv-test.sh
+++ b/iconvdata/run-iconv-test.sh
@@ -52,10 +52,18 @@ while read from to targets; do
       { echo "*** conversion from $t to $to failed"; exit 1; }
     test -s $temp1 && cmp testdata/$from $temp2 >& /dev/null ||
       { echo "*** $from -> t -> $to conversion failed"; exit 1; }
+    rm -f $temp1 $temp2
+
+    # Now test some bigger text, entirely in ASCII.
+    $ICONV -f $from -t $t testdata/suntzus |
+    $ICONV -f $t -t $to > $temp1 ||
+      { echo "*** conversion $from->$t->$to of suntzus failed"; exit 1; }
+    cmp testdata/suntzus.txt $temp1 ||
+      { echo "*** conversion $from->$t->$to of suntzus incorrect"; exit 1; }
+    rm -f $temp1
 
     # All tests ok.
     echo "$from -> $t -> $to ok"
-    rm -f $temp1 $temp2
   done
 done < TESTS
 
diff --git a/iconvdata/sjis.c b/iconvdata/sjis.c
index 33dc2f1d65..d65b905b32 100644
--- a/iconvdata/sjis.c
+++ b/iconvdata/sjis.c
@@ -18,12 +18,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
 #include <stdint.h>
-#include <string.h>
 #include <wchar.h>
 
-static const wchar_t halfkana_to_ucs4[] =
+static const uint32_t halfkana_to_ucs4[] =
 {
   0xff61, 0xff62, 0xff63, 0xff64, 0xff65, 0xff66, 0xff67, 0xff68,
   0xff69, 0xff6a, 0xff6b, 0xff6c, 0xff6d, 0xff6e, 0xff6f, 0xff70,
@@ -3981,268 +3979,151 @@ static const char from_ucs4_cjk[32657][2] =
 };
 
 
-/* Direction of the transformation.  */
-static int to_sjis_object;
-static int from_sjis_object;
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"SJIS"
+#define FROM_LOOP		from_sjis
+#define TO_LOOP			to_sjis
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		2
+#define MIN_NEEDED_TO		4
 
+/* First define the conversion function from SJIS to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = *inptr;						      \
+									      \
+    if (ch == 0x5c)							      \
+      {									      \
+	ch = 0xa5;							      \
+	++inptr;							      \
+      }									      \
+    else if (ch == 0x7e)						      \
+      {									      \
+	ch = 0x203e;							      \
+	++inptr;							      \
+      }									      \
+    else if (ch < 0x7e)							      \
+      ++inptr;								      \
+    else if (ch >= 0xa1 && ch <= 0xdf)					      \
+      {									      \
+	ch = halfkana_to_ucs4[ch - 0xa1];				      \
+	++inptr;							      \
+      }									      \
+    else if (ch > 0xea || ch == 0xa0 || ch == 0x7f || ch == 0x80)	      \
+      {									      \
+	/* These are illegal.  */					      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+    else								      \
+      {									      \
+	/* Two-byte character.  First test whether the next character	      \
+	   is also available.  */					      \
+	uint32_t ch2;							      \
+	uint_fast32_t idx;						      \
+									      \
+	if (NEED_LENGTH_TEST && inptr + 1 >= inend)			      \
+	  {								      \
+	    /* The second character is not available.  Store		      \
+	       the intermediate result.  */				      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch2 = inptr[1];							      \
+	idx = ch * 256 + ch2;						      \
+	if (idx < 0x8140 || (idx > 0x84be && idx < 0x889f)		      \
+	    || (idx > 0x89fc && idx < 0x9040)				      \
+	    || (idx > 0x9ffc && idx < 0xe040) || idx > 0xeaa4)		      \
+	  {								      \
+	    /* This is illegal.  */					      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+	else								      \
+	  {								      \
+	    /* We could pack the data a bit more dense.  The second	      \
+	       byte will never be 0x7f and it will also be never	      \
+	       >0xfc.  But this would mean yet more `if's.  */		      \
+	    if (idx <= 0x84be)						      \
+	      ch = cjk_block1[(ch - 0x81) * 192 + ch2 - 0x40];		      \
+	    else if (idx <= 0x89fc)					      \
+	      ch = cjk_block2[(ch - 0x88) * 192 + ch2 - 0x9f];		      \
+	    else if (idx <= 0x9ffc)					      \
+	      ch = cjk_block3[(ch - 0x90) * 192 + ch2 - 0x40];		      \
+	    else							      \
+	      ch = cjk_block4[(ch - 0xe0) * 192 + ch2 - 0x40];		      \
+	  }								      \
+									      \
+	if (ch == 0)							      \
+	  {								      \
+	    /* This is an illegal character.  */			      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
 
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "SJIS") != NULL)
-    step->data = &from_sjis_object;
-  else if (strcasestr (step->to_name, "SJIS") != NULL)
-    step->data = &to_sjis_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_sjis_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = inbuf[cnt];
-		  wchar_t ch;
-
-		  if (inchar == 0x5c)
-		    ch = L'\xa5';
-		  else if (inchar == 0x7e)
-		    ch = 0x203e;
-		  else if (inchar < 0x7e)
-		    ch = (wchar_t) inchar;
-		  else if (inchar >= 0xa1 && inchar <= 0xdf)
-		    ch = halfkana_to_ucs4[inchar - 0xa1];
-		  else if (inchar > 0xea || inchar == 0xa0 || inchar == 0x7f
-			   || inchar == 0x80)
-		    /* These are illegal.  */
-		    ch = L'\0';
-		  else
-		    {
-		      /* Two-byte character.  First test whether the next
-			 character is also available.  */
-		      int inchar2;
-		      int idx;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = inbuf[++cnt];
-		      idx = inchar * 256 + inchar2;
-		      if (idx < 0x8140 || (idx > 0x84be && idx < 0x889f)
-			  || (idx > 0x89fc && idx < 0x9040)
-			  || (idx > 0x9ffc && idx < 0xe040) || idx > 0xeaa4)
-			/* This is illegal.  */
-			ch = L'\0';
-		      else
-			{
-			  /* We could pack the data a bit more dense.
-			     The second byte will never be 0x7f and it
-			     will also be never >0xfc.  But this would
-			     mean yet more `if's.  */
-			  if (idx <= 0x84be)
-			    ch = cjk_block1[(inchar - 0x81) * 192
-					   + inchar2 - 0x40];
-			  else if (idx <= 0x89fc)
-			    ch = cjk_block2[(inchar - 0x88) * 192
-					   + inchar2 - 0x9f];
-			  else if (idx <= 0x9ffc)
-			    ch = cjk_block3[(inchar - 0x90) * 192
-					   + inchar2 - 0x40];
-			  else
-			    ch = cjk_block4[(inchar - 0xe0) * 192
-					   + inchar2 - 0x40];
-			}
-
-		      if (ch == L'\0')
-			--cnt;
-		    }
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  int ch = *((wchar_t *) (inbuf + cnt));
-		  const char *cp;
-
-		  if (ch >= (sizeof (from_ucs4_lat1)
-			     / sizeof (from_ucs4_lat1[0])))
-		    {
-		      if (ch >= 0x0391 && ch <= 0x0451)
-			cp = from_ucs4_greek[ch - 0x391];
-		      else if (ch >= 0x2010 && ch <= 0x9fa0)
-			cp = from_ucs4_cjk[ch - 0x02010];
-		      else
-			/* Illegal character.  */
-			break;
-		    }
-		  else
-		    cp = from_ucs4_lat1[ch];
-
-		  if (cp[0] == '\0' && ch != 0)
-		    /* Illegal character.  */
-		    break;
-
-		  outbuf[outchars] = cp[0];
-		  /* Now test for a possible second byte and write this
-		     if possible.  */
-		  if (cp[1] != '\0')
-		    {
-		      if (outchars + 1 >= data->outbufsize)
-			{
-			  /* The result does not fit into the buffer.  */
-			  extra = 1;
-			  break;
-			}
-		      outbuf[++outchars] = cp[1];
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_sjis_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
 
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    const char *cp;							      \
+									      \
+    if (ch >= (sizeof (from_ucs4_lat1) / sizeof (from_ucs4_lat1[0])))	      \
+      {									      \
+	if (ch >= 0x0391 && ch <= 0x0451)				      \
+	  cp = from_ucs4_greek[ch - 0x391];				      \
+	else if (ch >= 0x2010 && ch <= 0x9fa0)				      \
+	  cp = from_ucs4_cjk[ch - 0x02010];				      \
+	else								      \
+	  {								      \
+	    /* Illegal character.  */					      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+      }									      \
+    else								      \
+      cp = from_ucs4_lat1[ch];						      \
+									      \
+    if (cp[0] == '\0' && ch != 0)					      \
+      {									      \
+	/* Illegal character.  */					      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *outptr++ = cp[0];							      \
+    /* Now test for a possible second byte and write this if possible.  */    \
+    if (cp[1] != '\0')							      \
+      {									      \
+	if (NEED_LENGTH_TEST && outptr >= outend)			      \
+	  {								      \
+	    /* The result does not fit into the buffer.  */		      \
+	    result = GCONV_FULL_OUTPUT;					      \
+	    break;							      \
+	  }								      \
+	*outptr++ = cp[1];						      \
+      }									      \
+									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
 
-  if (written != NULL && data->is_last)
-    *written = do_write;
 
-  return result;
-}
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/t61.c b/iconvdata/t61.c
index b77ee71248..8c288adca2 100644
--- a/iconvdata/t61.c
+++ b/iconvdata/t61.c
@@ -19,6 +19,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <gconv.h>
+#include <stdint.h>
 #include <string.h>
 
 /* Data taken from the WG15 tables.  */
@@ -362,248 +363,133 @@ static const char from_ucs4[][2] =
 */
 };
 
-/* Direction of the transformation.  */
-static int to_t61_object;
-static int from_t61_object;
 
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"T.61"
+#define FROM_LOOP		from_t_61
+#define TO_LOOP			to_t_61
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		2
+#define MIN_NEEDED_TO		4
+
+/* First define the conversion function from T.61 to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = *inptr;						      \
+									      \
+    if (ch >= 0xc1 && ch <= 0xcf)					      \
+      {									      \
+	/* Composed character.  First test whether the next character	      \
+	   is also available.  */					      \
+	uint32_t ch2;							      \
+									      \
+	if (NEED_LENGTH_TEST && inptr + 1 >= inend)			      \
+	  {								      \
+	    /* The second character is not available.  */		      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch2 = inptr[1];							      \
+									      \
+	if (ch2 < 0x20 || ch2 >= 0x80)					      \
+	  {								      \
+	    /* This is illegal.  */					      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch = to_ucs4_comb[ch - 0xc1][ch2 - 0x20];			      \
+									      \
+	inptr += 2;							      \
+      }									      \
+    else								      \
+      {									      \
+	ch = to_ucs4[ch];						      \
+	++inptr;							      \
+      }									      \
+									      \
+    if (ch == 0 && *inptr != '\0')					      \
+      {									      \
+	/* This is an illegal character.  */				      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    char tmp[2];							      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    const char *cp;							      \
+									      \
+    if (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0]))		      \
+      {									      \
+	if (ch == 0x2126)						      \
+	  cp = "\xe0";							      \
+	else if (ch == 0x2c7)						      \
+	  cp = "\xcf\x20";						      \
+	else if (ch < 0x2d8 || ch > 0x2dd)				      \
+	  {								      \
+	    /* Illegal characters.  */					      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+	else								      \
+	  {								      \
+	    static const char map[5] = "\xc6\xc7\xca\xce\xcd";		      \
+									      \
+	    tmp[0] = map[ch - 0x2d8];					      \
+	    tmp[1] = ' ';						      \
+	    cp = tmp;							      \
+	  }								      \
+      }									      \
+    else								      \
+      {									      \
+	cp = from_ucs4[ch];						      \
+									      \
+	if (cp[0] == '\0' && ch != 0)					      \
+	  {								      \
+	    /* Illegal.  */						      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+      }									      \
+									      \
+    *outptr++ = cp[0];							      \
+    /* Now test for a possible second byte and write this if possible.  */    \
+    if (cp[1] != '\0')							      \
+      {									      \
+	if (NEED_LENGTH_TEST && outptr >= outend)			      \
+	  {								      \
+	    /* The result does not fit into the buffer.  */		      \
+	    --outptr;							      \
+	    result = GCONV_FULL_OUTPUT;					      \
+	    break;							      \
+	  }								      \
+									      \
+	*outptr++ = cp[1];						      \
+      }									      \
+									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
 
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "T.61") != NULL)
-    step->data = &from_t61_object;
-  else if (strcasestr (step->to_name, "T.61") != NULL)
-    step->data = &to_t61_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_t61_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = inbuf[cnt];
-		  wchar_t ch;
-
-		  if (inchar >= '\xc1' && inchar <= '\xcf')
-		    {
-		      /* Composed character.  First test whether the next
-			 character is also available.  */
-		      int inchar2;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = inbuf[++cnt];
-
-		      if (inchar2 < '\x20' || inchar2 >= '\x80')
-			/* This is illegal.  */
-			ch = L'\0';
-		      else
-			ch = to_ucs4_comb[inchar - 0xc1][inchar2 - 0x20];
-
-		      if (ch == L'\0')
-			/* Undo the increment for illegal characters.  */
-			--cnt;
-		    }
-		  else
-		    ch = to_ucs4[inchar];
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  char tmp[2];
-		  int ch = *((wchar_t *) (inbuf + cnt));
-		  const char *cp;
-
-		  if (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0]))
-		    {
-		      if (ch == 0x2126)
-			cp = "\xe0";
-		      else if (ch == 0x2c7)
-			cp = "\xcf\x20";
-		      else if (ch < 0x2d8 || ch > 0x2dd)
-			/* Illegal characters.  */
-			break;
-		      else
-			{
-			  static const char map[5] = "\xc6\xc7\xca\xce\xcd";
-
-			  tmp[0] = map[ch - 0x2d8];
-			  tmp[1] = ' ';
-			  cp = tmp;
-			}
-		    }
-		  else if (ch < 0 || (from_ucs4[ch][0] == '\0' && ch != 0))
-		    break;
-		  else
-		    cp = from_ucs4[ch];
-
-		  outbuf[outchars] = cp[0];
-		  /* Now test for a possible second byte and write this
-		     if possible.  */
-		  if (cp[1] != '\0')
-		    {
-		      if (outchars + 1 >= data->outbufsize)
-			{
-			  /* The result does not fit into the buffer.  */
-			  extra = 1;
-			  break;
-			}
-		      outbuf[++outchars] = cp[1];
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_t61_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
 
-  return result;
-}
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>
diff --git a/iconvdata/uhc.c b/iconvdata/uhc.c
index ed4b7adb70..f3addd4c4d 100644
--- a/iconvdata/uhc.c
+++ b/iconvdata/uhc.c
@@ -18,16 +18,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
 #include <stdint.h>
-#include <string.h>
-#include <wchar.h>
 #include <ksc5601.h>
 
-/* Direction of the transformation.  */
-static int to_uhc_object;
-static int from_uhc_object;
-
 
 /*
 egrep \
@@ -2576,20 +2569,20 @@ static const uint16_t uhc_hangul_from_ucs[11172]=
   0xc64f, 0xc650, 0xc651, 0xc652
 };
 
+
 static inline void
-uhc_from_ucs4(wchar_t ch, unsigned char *cp)
+uhc_from_ucs4 (uint32_t ch, unsigned char *cp)
 {
   if (ch >= 0x7f)
     {
       uint16_t idx=0;
 
       if (ch >= 0xac00 && ch <= 0xd7a3)
-	idx = uhc_hangul_from_ucs[(int) ch - 0xac00];
-      else if (ch >= 0x4e00 && ch <= 0x9fa5
-	       || ch >= 0xf900 && ch <= 0xfa0b)
+	idx = uhc_hangul_from_ucs[ch - 0xac00];
+      else if (ch >= 0x4e00 && ch <= 0x9fa5 || ch >= 0xf900 && ch <= 0xfa0b)
 	{
 	  ucs4_to_ksc5601_hanja (ch,&idx);
-	  idx |= (idx ?  0x8080 : 0);
+	  idx |= (idx ? 0x8080 : 0);
 	}
 /* Half-width Korean Currency Won Sign
       else if (ch == 0x20a9)
@@ -2598,286 +2591,169 @@ uhc_from_ucs4(wchar_t ch, unsigned char *cp)
       else
 	{
 	  ucs4_to_ksc5601_sym (ch, &idx);
-	  idx |= (idx ?  0x8080 : 0);
+	  idx |= (idx ? 0x8080 : 0);
 	}
 
-      *cp = (char) (idx / 256);
-      *(cp + 1) = (char) (idx & 0xff) ;
+      cp[0] = (unsigned char) (idx / 256);
+      cp[1] = (unsigned char) (idx & 0xff);
     }
-  /* think about 0x5c ; '\' */
+  /* XXX Think about 0x5c ; '\'.  */
   else
     {
-      *cp = (char) (0x7f & ch) ;
-      *(cp + 1) = (char) 0;
+      cp[0] = (unsigned char) ch;
+      cp[1] = (unsigned char) 0;
     }
 }
 
 
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "UHC") != NULL)
-    step->data = &from_uhc_object;
-  else if (strcasestr (step->to_name, "UHC") != NULL)
-    step->data = &to_uhc_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_uhc_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = (unsigned char) inbuf[cnt];
-		  wchar_t ch;
-/* half-width Korean Currency WON sign
-
-		  if (inchar == 0x5c)
-		    ch =  0x20a9;
-		  else if (inchar <= 0x7f)
-		    ch = (wchar_t) inchar;
-*/
-		  if (inchar <= 0x7f)
-		    ch = (wchar_t) inchar;
-
-
-                  else if ( inchar <= 0x80 || inchar >= 0xfe || inchar == 0xc9)
-                      /* This is illegal.  */
-                      ch = L'\0';
-		  else
-		    {
-		      /* Two-byte character.  First test whether the next
-			 character is also available.  */
-		      int inchar2;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = (unsigned char) inbuf[++cnt];
-
-/*
-  Additional code points not present in EUC-KR
-
-         1st byte             2nd byte
-     0x81-0xa0            0x41-0x5a, 0x61-0x7a, 0x81-0xfe         total
-      (32)                 (26)   +    (26)   +    (126) = 178     5696
-
-     0xa1-0xc5            0x41-0x5a  0x61-0x7a  0x81-0xa0
-      (37)                  (26)  +   (26)    +    (32) =  84      3108
-
-     0xc6                 0x41-0x52
-      (1)                    (18)                                   18
-
-                                                                    8822
-
-
-  8822(only in UHC) + 2350(both in EUC-KR and UHC) =  11,172
-*/
-
-                      if ( inchar < 0xa1 || inchar2 < 0xa1)
-                           if ( inchar > 0xc6 || inchar2 <0x41 ||
-                                inchar2 > 0x5a && inchar2 < 0x61 ||
-                                inchar2 > 0x7a && inchar2 < 0x81 ||
-                                inchar == 0xc6 && inchar2 >  0x52 )
-                              ch = L'0';
-                           else
-                             {
-                               ch = uhc_extra_to_ucs[ inchar2 - 0x41
-                                    -  ( inchar2 > 0x80 ? 12 :
-                                       ( inchar2 > 0x60 ?  6 :  0 ) )
-                                    +  ( inchar < 0xa1  ?
-                                         (inchar - 0x81) * 178  :
-                                         5696 + (inchar - 0xa1) * 84 ) ] ;
-                             }
-
-                      else
-		         if ( ( ch = ksc5601_to_ucs4(
-                              (uint16_t) (inchar * 256 + inchar2) & 0x7f7f) )
-                             == UNKNOWN_10646_CHAR )
-
-                               ch = L'\0';
-
-		      if (ch == L'\0')
-			--cnt;
-		    }
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  wchar_t ch = *((wchar_t *) (inbuf + cnt));
-		  unsigned char cp[2];
-
-                  uhc_from_ucs4(ch,cp) ;
-
-		  if (cp[0] == '\0' && ch != 0)
-		    /* Illegal character.  */
-		    break;
-
-		  outbuf[outchars] = cp[0];
-		  /* Now test for a possible second byte and write this
-		     if possible.  */
-		  if (cp[1] != '\0')
-		    {
-		      if (outchars + 1 >= data->outbufsize)
-			{
-			  /* The result does not fit into the buffer.  */
-			  extra = 1;
-			  break;
-			}
-		      outbuf[++outchars] = cp[1];
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_uhc_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
-
-  return result;
-}
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"UHC"
+#define FROM_LOOP		from_uhc
+#define TO_LOOP			to_uhc
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		2
+#define MIN_NEEDED_TO		4
+
+/* First define the conversion function from UHC to UCS4.  */
+#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 \
+  {									      \
+    uint32_t ch = (uint32_t) *inptr;					      \
+									      \
+/* half-width Korean Currency WON sign					      \
+									      \
+    if (ch == 0x5c)							      \
+      ch =  0x20a9;							      \
+    else if (ch <= 0x7f)						      \
+      ch = (wchar_t) ch;						      \
+*/									      \
+    if (ch <= 0x7f)							      \
+      ++inptr;								      \
+    else if (ch <= 0x80 || ch >= 0xfe || ch == 0xc9)			      \
+      {									      \
+	/* This is illegal.  */						      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+    else								      \
+      {									      \
+	/* Two-byte character.  First test whether the next character	      \
+	   is also available.  */					      \
+	uint32_t ch2;							      \
+									      \
+	if (NEED_LENGTH_TEST && inptr + 1 >= inend)			      \
+	  {								      \
+	    /* The second character is not available.  Store		      \
+	       the intermediate result.  */				      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch2 = inptr[1];							      \
+									      \
+/*									      \
+  Additional code points not present in EUC-KR				      \
+									      \
+         1st byte             2nd byte					      \
+     0x81-0xa0            0x41-0x5a, 0x61-0x7a, 0x81-0xfe         total	      \
+      (32)                 (26)   +    (26)   +    (126) = 178     5696	      \
+									      \
+     0xa1-0xc5            0x41-0x5a  0x61-0x7a  0x81-0xa0		      \
+      (37)                  (26)  +   (26)    +    (32) =  84      3108	      \
+									      \
+     0xc6                 0x41-0x52					      \
+      (1)                    (18)                                   18	      \
+									      \
+                                                                    8822      \
+									      \
+  8822(only in UHC) + 2350(both in EUC-KR and UHC) =  11,172		      \
+*/									      \
+									      \
+	if (ch < 0xa1 || ch2 < 0xa1)					      \
+	  {								      \
+	    if (ch > 0xc6 || ch2 <0x41 || (ch2 > 0x5a && ch2 < 0x61)	      \
+		|| (ch2 > 0x7a && ch2 < 0x81) || (ch == 0xc6 && ch2 > 0x52))  \
+	      {								      \
+		/* This is not legal.  */				      \
+		result = GCONV_ILLEGAL_INPUT;				      \
+		break;							      \
+	      }								      \
+									      \
+	    ch = uhc_extra_to_ucs[ch2 - 0x41				      \
+				 - (ch2 > 0x80 ? 12 : (ch2 > 0x60 ? 6 : 0))   \
+				 +  (ch < 0xa1				      \
+				     ? (ch - 0x81) * 178		      \
+				     : 5696 + (ch - 0xa1) * 84)];	      \
+	  }								      \
+	else								      \
+	  {								      \
+	    ch = ksc5601_to_ucs4 ((ch * 256 + ch2) & 0x7f7f);		      \
+									      \
+	    if (ch == UNKNOWN_10646_CHAR)				      \
+	      {								      \
+		/* Illegal.  */						      \
+		result = GCONV_ILLEGAL_INPUT;				      \
+		break;							      \
+	      }								      \
+	  }								      \
+									      \
+	if (ch == 0)							      \
+	  {								      \
+	    /* This is an illegal character.  */			      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	inptr += 2;							      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#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 \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    unsigned char cp[2];						      \
+									      \
+    uhc_from_ucs4 (ch, cp);						      \
+									      \
+    if (cp[0] == '\0' && ch != 0)					      \
+      {									      \
+	/* Illegal character.  */					      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *outptr++ = cp[0];							      \
+    /* Now test for a possible second byte and write this if possible.  */    \
+    if (cp[1] != '\0')							      \
+      {									      \
+	if (NEED_LENGTH_TEST && outptr >= outend)			      \
+	  {								      \
+	    /* The result does not fit into the buffer.  */		      \
+	    result = GCONV_FULL_OUTPUT;					      \
+	    break;							      \
+	  }								      \
+									      \
+	*outptr++ = cp[1];						      \
+      }									      \
+									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>