Consolidate wctomb/mbtowc calls for POSIX-1.2008

- Remove charset parameter from low level __foo_wctomb/__foo_mbtowc calls.
- Instead, create array of function for ISO and Windows codepages to point
  to function which does not require to evaluate the charset string on
  each call.  Create matching helper functions.  I.e., __iso_wctomb,
  __iso_mbtowc, __cp_wctomb and __cp_mbtowc are functions returning the
  right function pointer now.
- Create __WCTOMB/__MBTOWC macros utilizing per-reent locale and replace
  calls to __wctomb/__mbtowc with calls to __WCTOMB/__MBTOWC.
- Drop global __wctomb/__mbtowc vars.
- Utilize aforementioned changes in Cygwin to get rid of charset in other,
  calling functions and simplify the code.
- In Cygwin restrict global cygheap locale info to the job performed
  by internal_setlocale.  Use UTF-8 instead of ASCII on the fly in
  internal conversion functions.
- In Cygwin dll_entry, make sure to initialize a TLS area with a NULL
  _REENT->_locale pointer.  Add comment to explain why.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>

23 files changed, 833 insertions, 216 deletions

diff --git a/newlib/libc/ctype/isprint.c b/newlib/libc/ctype/isprint.c
index 87254f4..172a233 100644
--- a/newlib/libc/ctype/isprint.c
+++ b/newlib/libc/ctype/isprint.c
@@ -56,6 +56,6 @@ _DEFUN(isgraph,(c),int c)
 int
 _DEFUN(isprint,(c),int c)
 {
-	return(__ctype_ptr__[c+1] & (_P|_U|_L|_N|_B));
+	return(__CTYPE_PTR[c+1] & (_P|_U|_L|_N|_B));
 }
 
diff --git a/newlib/libc/ctype/local.h b/newlib/libc/ctype/local.h
index 1a16520..b3788e2 100644
--- a/newlib/libc/ctype/local.h
+++ b/newlib/libc/ctype/local.h
@@ -1,6 +1,7 @@
 /* wctrans constants */
 
 #include <_ansi.h>
+#include "../locale/setlocale.h"
 
 /* valid values for wctrans_t */
 #define WCT_TOLOWER 1
@@ -20,8 +21,6 @@
 #define WC_UPPER	11
 #define WC_XDIGIT	12
 
-extern char *__locale_charset(_NOARGS);
-
 /* internal function to translate JP to Unicode */
 #ifdef __CYGWIN__
 /* Under Cygwin, the incoming wide character is already given in UTF due
diff --git a/newlib/libc/locale/locale.c b/newlib/libc/locale/locale.c
index eb08dad..0430f1f 100644
--- a/newlib/libc/locale/locale.c
+++ b/newlib/libc/locale/locale.c
@@ -459,12 +459,11 @@ loadlocale(struct _reent *p, int category)
      dependent on the cateogry. */
   char *locale = NULL;
   char charset[ENCODING_LEN + 1];
-  unsigned long val;
+  long val = 0;
   char *end, *c = NULL;
   int mbc_max;
-  int (*l_wctomb) (struct _reent *, char *, wchar_t, const char *, mbstate_t *);
-  int (*l_mbtowc) (struct _reent *, wchar_t *, const char *, size_t,
-		   const char *, mbstate_t *);
+  wctomb_p l_wctomb;
+  mbtowc_p l_mbtowc;
   int cjknarrow = 0;
 
   /* Avoid doing everything twice if nothing has changed. */
@@ -674,8 +673,8 @@ restart:
       *c = '\0';
       mbc_max = 1;
 #ifdef _MB_EXTENDED_CHARSETS_ISO
-      l_wctomb = __iso_wctomb;
-      l_mbtowc = __iso_mbtowc;
+      l_wctomb = __iso_wctomb (val);
+      l_mbtowc = __iso_mbtowc (val);
 #else /* !_MB_EXTENDED_CHARSETS_ISO */
       l_wctomb = __ascii_wctomb;
       l_mbtowc = __ascii_mbtowc;
@@ -715,8 +714,8 @@ restart:
 	case 1258:
 	  mbc_max = 1;
 #ifdef _MB_EXTENDED_CHARSETS_WINDOWS
-	  l_wctomb = __cp_wctomb;
-	  l_mbtowc = __cp_mbtowc;
+	  l_wctomb = __cp_wctomb (val);
+	  l_mbtowc = __cp_mbtowc (val);
 #else /* !_MB_EXTENDED_CHARSETS_WINDOWS */
 	  l_wctomb = __ascii_wctomb;
 	  l_mbtowc = __ascii_mbtowc;
@@ -740,15 +739,21 @@ restart:
       if (*c == '-')
 	++c;
       if (*c == 'R' || *c == 'r')
-	strcpy (charset, "CP20866");
+	{
+	  val = 20866;
+	  strcpy (charset, "CP20866");
+	}
       else if (*c == 'U' || *c == 'u')
-	strcpy (charset, "CP21866");
+	{
+	  val = 21866;
+	  strcpy (charset, "CP21866");
+	}
       else
 	FAIL;
       mbc_max = 1;
 #ifdef _MB_EXTENDED_CHARSETS_WINDOWS
-      l_wctomb = __cp_wctomb;
-      l_mbtowc = __cp_mbtowc;
+      l_wctomb = __cp_wctomb (val);
+      l_mbtowc = __cp_mbtowc (val);
 #else /* !_MB_EXTENDED_CHARSETS_WINDOWS */
       l_wctomb = __ascii_wctomb;
       l_mbtowc = __ascii_mbtowc;
@@ -786,11 +791,12 @@ restart:
 	    ++c;
 	  if (strcasecmp (c, "PS"))
 	    FAIL;
+	  val = 101;
 	  strcpy (charset, "CP101");
 	  mbc_max = 1;
 #ifdef _MB_EXTENDED_CHARSETS_WINDOWS
-	  l_wctomb = __cp_wctomb;
-	  l_mbtowc = __cp_mbtowc;
+	  l_wctomb = __cp_wctomb (val);
+	  l_mbtowc = __cp_mbtowc (val);
 #else /* !_MB_EXTENDED_CHARSETS_WINDOWS */
 	  l_wctomb = __ascii_wctomb;
 	  l_mbtowc = __ascii_mbtowc;
@@ -804,11 +810,12 @@ restart:
       /* PT154 */
       if (strcasecmp (charset, "PT154"))
 	FAIL;
+      val = 102;
       strcpy (charset, "CP102");
       mbc_max = 1;
 #ifdef _MB_EXTENDED_CHARSETS_WINDOWS
-      l_wctomb = __cp_wctomb;
-      l_mbtowc = __cp_mbtowc;
+      l_wctomb = __cp_wctomb (val);
+      l_mbtowc = __cp_mbtowc (val);
 #else /* !_MB_EXTENDED_CHARSETS_WINDOWS */
       l_wctomb = __ascii_wctomb;
       l_mbtowc = __ascii_mbtowc;
@@ -826,8 +833,8 @@ restart:
       strcpy (charset, "CP874");
       mbc_max = 1;
 #ifdef _MB_EXTENDED_CHARSETS_WINDOWS
-      l_wctomb = __cp_wctomb;
-      l_mbtowc = __cp_mbtowc;
+      l_wctomb = __cp_wctomb (val);
+      l_mbtowc = __cp_mbtowc (val);
 #else /* !_MB_EXTENDED_CHARSETS_WINDOWS */
       l_wctomb = __ascii_wctomb;
       l_mbtowc = __ascii_mbtowc;
@@ -859,8 +866,8 @@ restart:
 #ifdef __CYGWIN__
       __mb_cur_max = mbc_max;	/* Only for backward compat */
 #endif
-      __wctomb = l_wctomb;
-      __mbtowc = l_mbtowc;
+      __global_locale.wctomb = l_wctomb;
+      __global_locale.mbtowc = l_mbtowc;
       __set_ctype (NULL, charset);
       /* Determine the width for the "CJK Ambiguous Width" category of
          characters. This is used in wcwidth(). Assume single width for
@@ -943,16 +950,6 @@ __get_locale_env(struct _reent *p, int category)
 }
 #endif /* _MB_CAPABLE */
 
-char *
-_DEFUN_VOID(__locale_charset)
-{
-#ifdef __HAVE_LOCALE_INFO__
-  return __get_current_ctype_locale ()->codeset;
-#else
-  return __global_locale.ctype_codeset;
-#endif
-}
-
 int
 _DEFUN_VOID(__locale_mb_cur_max)
 {
@@ -963,36 +960,16 @@ _DEFUN_VOID(__locale_mb_cur_max)
 #endif
 }
 
-char *
-_DEFUN_VOID(__locale_msgcharset)
-{
-#ifdef __HAVE_LOCALE_INFO__
-  return (char *) __get_current_messages_locale ()->codeset;
-#else
-  return (char *) __global_locale.message_codeset;
-#endif
-}
-
-int
-_DEFUN_VOID(__locale_cjk_lang)
-{
-#ifdef __HAVE_LOCALE_INFO__
-  return __get_current_locale ()->cjk_lang;
-#else
-  return __global_locale.cjk_lang;
-#endif
-}
-
 #ifdef __HAVE_LOCALE_INFO__
 char *
 _DEFUN_VOID(__locale_ctype_ptr)
 {
   /* Only check if the current thread/reent has a locale.  ctype_ptr is unused
      in __global_locale, rather the global variable __ctype_ptr__ is used. */
+  extern char *__ctype_ptr__;
   return __get_locale_r (_REENT) ? __get_locale_r (_REENT)->ctype_ptr
 				 : __ctype_ptr__;
 }
-
 #endif
 
 struct lconv *
diff --git a/newlib/libc/locale/nl_langinfo.c b/newlib/libc/locale/nl_langinfo.c
index ce6d8d8..46e8b0e 100644
--- a/newlib/libc/locale/nl_langinfo.c
+++ b/newlib/libc/locale/nl_langinfo.c
@@ -172,8 +172,6 @@ static struct _nl_item_t
 
 #define _REL(BASE) ((int)item-BASE)
 
-extern char *__locale_charset ();
-
 char *
 _DEFUN(nl_langinfo, (item), 
        nl_item item) {
diff --git a/newlib/libc/locale/setlocale.h b/newlib/libc/locale/setlocale.h
index ffb1cf1..50797db 100644
--- a/newlib/libc/locale/setlocale.h
+++ b/newlib/libc/locale/setlocale.h
@@ -159,8 +159,7 @@ typedef __uint32_t LCID;
 struct lc_collate_T
 {
   LCID  lcid;
-  int (*mbtowc) (struct _reent *, wchar_t *, const char *, size_t, const char *,
-		 mbstate_t *);
+  int (*mbtowc) (struct _reent *, wchar_t *, const char *, size_t, mbstate_t *);
   char codeset[ENCODING_LEN + 1];
 };
 extern const struct lc_collate_T _C_collate_locale;
@@ -169,13 +168,12 @@ extern const struct lc_collate_T _C_collate_locale;
 struct _thr_locale_t
 {
   char				 categories[_LC_LAST][ENCODING_LEN + 1];
-  int				(*__wctomb) (struct _reent *, char *, wchar_t,
-					     const char *, mbstate_t *);
-  int				(*__mbtowc) (struct _reent *, wchar_t *,
-					     const char *, size_t, const char *,
-					     mbstate_t *);
-  char				*ctype_ptr; /* Unused in __global_locale */
+  int				(*wctomb) (struct _reent *, char *, wchar_t,
+					   mbstate_t *);
+  int				(*mbtowc) (struct _reent *, wchar_t *,
+					   const char *, size_t, mbstate_t *);
   int				 cjk_lang;
+  char				*ctype_ptr; /* Unused in __global_locale */
 #ifndef __HAVE_LOCALE_INFO__
   char				 mb_cur_max[2];
   char				 ctype_codeset[ENCODING_LEN + 1];
@@ -264,6 +262,36 @@ __get_current_collate_locale (void)
 }
 #endif
 
+_ELIDABLE_INLINE const char *
+__locale_charset (void)
+{
+#ifdef __HAVE_LOCALE_INFO__
+  return __get_current_ctype_locale ()->codeset;
+#else
+  return __global_locale.ctype_codeset;
+#endif
+}
+
+_ELIDABLE_INLINE const char *
+__locale_msgcharset (void)
+{
+#ifdef __HAVE_LOCALE_INFO__
+  return (char *) __get_current_messages_locale ()->codeset;
+#else
+  return (char *) __global_locale.message_codeset;
+#endif
+}
+
+_ELIDABLE_INLINE int
+__locale_cjk_lang (void)
+{
+#ifdef __HAVE_LOCALE_INFO__
+  return __get_current_locale ()->cjk_lang;
+#else
+  return __global_locale.cjk_lang;
+#endif
+}
+
 int __ctype_load_locale (struct _thr_locale_t *, const char *, void *,
 			 const char *, int);
 int __monetary_load_locale (struct _thr_locale_t *, const char *, void *,
diff --git a/newlib/libc/stdio/vfprintf.c b/newlib/libc/stdio/vfprintf.c
index 6430edf..ed92bb2 100644
--- a/newlib/libc/stdio/vfprintf.c
+++ b/newlib/libc/stdio/vfprintf.c
@@ -910,8 +910,8 @@ _DEFUN(_VFPRINTF_R, (data, fp, fmt0, ap),
 	for (;;) {
 	        cp = fmt;
 #ifdef _MB_CAPABLE
-	        while ((n = __mbtowc (data, &wc, fmt, MB_CUR_MAX,
-				      __locale_charset (), &state)) != 0) {
+	        while ((n = __MBTOWC (data, &wc, fmt, MB_CUR_MAX,
+				      &state)) != 0) {
 		    if (n < 0) {
 			/* Wave invalid chars through. */
 			memset (&state, 0, sizeof state);
@@ -2079,8 +2079,7 @@ _DEFUN(get_arg, (data, n, fmt, ap, numargs_p, args, arg_type, last_fmt),
   while (*fmt && n >= numargs)
     {
 # ifdef _MB_CAPABLE
-      while ((nbytes = __mbtowc (data, &wc, fmt, MB_CUR_MAX,
-				 __locale_charset (), &wc_state)) > 0)
+      while ((nbytes = __MBTOWC (data, &wc, fmt, MB_CUR_MAX, &wc_state)) > 0)
 	{
 	  fmt += nbytes;
 	  if (wc == '%')
diff --git a/newlib/libc/stdio/vfscanf.c b/newlib/libc/stdio/vfscanf.c
index e2e08db..544d8db 100644
--- a/newlib/libc/stdio/vfscanf.c
+++ b/newlib/libc/stdio/vfscanf.c
@@ -508,8 +508,7 @@ _DEFUN(__SVFSCANF_R, (rptr, fp, fmt0, ap),
 #ifndef _MB_CAPABLE
       wc = *fmt;
 #else
-      nbytes = __mbtowc (rptr, &wc, (char *) fmt, MB_CUR_MAX,
-			 __locale_charset (), &state);
+      nbytes = __MBTOWC (rptr, &wc, (char *) fmt, MB_CUR_MAX, &state);
       if (nbytes < 0) {
 	wc = 0xFFFD; /* Unicode replacement character */
 	nbytes = 1;
diff --git a/newlib/libc/stdlib/btowc.c b/newlib/libc/stdlib/btowc.c
index 354a1d6..7605ce6 100644
--- a/newlib/libc/stdlib/btowc.c
+++ b/newlib/libc/stdlib/btowc.c
@@ -23,8 +23,7 @@ btowc (int c)
 
   _REENT_CHECK_MISC(_REENT);
 
-  retval = __mbtowc (_REENT, &pwc, (const char *) &b, 1,
-		     __locale_charset (), &mbs);
+  retval = __MBTOWC (_REENT, &pwc, (const char *) &b, 1, &mbs);
 
   if (retval != 0 && retval != 1)
     return WEOF;
diff --git a/newlib/libc/stdlib/local.h b/newlib/libc/stdlib/local.h
index aaa32df..0b950d2 100644
--- a/newlib/libc/stdlib/local.h
+++ b/newlib/libc/stdlib/local.h
@@ -5,62 +5,59 @@
 
 char *	_EXFUN(_gcvt,(struct _reent *, double , int , char *, char, int));
 
-char *__locale_charset(_NOARGS);
+#include "../locale/setlocale.h"
 
 #ifndef __machine_mbstate_t_defined
 #include <wchar.h>
 #endif
 
-extern int (*__wctomb) (struct _reent *, char *, wchar_t, const char *,
-			mbstate_t *);
-int __ascii_wctomb (struct _reent *, char *, wchar_t, const char *,
-		    mbstate_t *);
+typedef int wctomb_f (struct _reent *, char *, wchar_t, mbstate_t *);
+typedef wctomb_f *wctomb_p;
+
+wctomb_f __ascii_wctomb;
 #ifdef _MB_CAPABLE
-int __utf8_wctomb (struct _reent *, char *, wchar_t, const char *, mbstate_t *);
-int __sjis_wctomb (struct _reent *, char *, wchar_t, const char *, mbstate_t *);
-int __eucjp_wctomb (struct _reent *, char *, wchar_t, const char *,
-		    mbstate_t *);
-int __jis_wctomb (struct _reent *, char *, wchar_t, const char *, mbstate_t *);
-int __iso_wctomb (struct _reent *, char *, wchar_t, const char *, mbstate_t *);
-int __cp_wctomb (struct _reent *, char *, wchar_t, const char *, mbstate_t *);
+wctomb_f __utf8_wctomb;
+wctomb_f __sjis_wctomb;
+wctomb_f __eucjp_wctomb;
+wctomb_f __jis_wctomb;
+wctomb_p __iso_wctomb (int val);
+wctomb_p __cp_wctomb (int val);
 #ifdef __CYGWIN__
-int __gbk_wctomb (struct _reent *, char *, wchar_t, const char *, mbstate_t *);
-int __kr_wctomb (struct _reent *, char *, wchar_t, const char *, mbstate_t *);
-int __big5_wctomb (struct _reent *, char *, wchar_t, const char *, mbstate_t *);
+wctomb_f __gbk_wctomb;
+wctomb_f __kr_wctomb;
+wctomb_f __big5_wctomb;
 #endif
 #endif
 
-extern int (*__mbtowc) (struct _reent *, wchar_t *, const char *, size_t,
-			const char *, mbstate_t *);
-int __ascii_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		    const char *, mbstate_t *);
+#define __WCTOMB (__get_current_locale ()->wctomb)
+
+typedef int mbtowc_f (struct _reent *, wchar_t *, const char *, size_t,
+		      mbstate_t *);
+typedef mbtowc_f *mbtowc_p;
+
+mbtowc_f __ascii_mbtowc;
 #ifdef _MB_CAPABLE
-int __utf8_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		   const char *, mbstate_t *);
-int __sjis_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		   const char *, mbstate_t *);
-int __eucjp_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		    const char *, mbstate_t *);
-int __jis_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		  const char *, mbstate_t *);
-int __iso_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		  const char *, mbstate_t *);
-int __cp_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		 const char *, mbstate_t *);
+mbtowc_f __utf8_mbtowc;
+mbtowc_f __sjis_mbtowc;
+mbtowc_f __eucjp_mbtowc;
+mbtowc_f __jis_mbtowc;
+mbtowc_p __iso_mbtowc (int val);
+mbtowc_p __cp_mbtowc (int val);
 #ifdef __CYGWIN__
-int __gbk_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		  const char *, mbstate_t *);
-int __kr_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		  const char *, mbstate_t *);
-int __big5_mbtowc (struct _reent *, wchar_t *, const char *, size_t,
-		 const char *, mbstate_t *);
+mbtowc_f __gbk_mbtowc;
+mbtowc_f __kr_mbtowc;
+mbtowc_f __big5_mbtowc;
 #endif
 #endif
 
+#define __MBTOWC (__get_current_locale ()->mbtowc)
+
 extern wchar_t __iso_8859_conv[14][0x60];
+int __iso_8859_val_index (int);
 int __iso_8859_index (const char *);
 
 extern wchar_t __cp_conv[][0x80];
+int __cp_val_index (int);
 int __cp_index (const char *);
 
 #endif
diff --git a/newlib/libc/stdlib/mblen.c b/newlib/libc/stdlib/mblen.c
index 4d9ac38..f9fb464 100644
--- a/newlib/libc/stdlib/mblen.c
+++ b/newlib/libc/stdlib/mblen.c
@@ -60,7 +60,7 @@ _DEFUN (mblen, (s, n),
   
   _REENT_CHECK_MISC(reent);
   state = &(_REENT_MBLEN_STATE(reent));
-  retval = __mbtowc (reent, NULL, s, n, __locale_charset (), state);
+  retval = __MBTOWC (reent, NULL, s, n, state);
   if (retval < 0)
     {
       state->__count = 0;
diff --git a/newlib/libc/stdlib/mblen_r.c b/newlib/libc/stdlib/mblen_r.c
index c3b5964..9c1533e 100644
--- a/newlib/libc/stdlib/mblen_r.c
+++ b/newlib/libc/stdlib/mblen_r.c
@@ -57,7 +57,7 @@ _DEFUN (_mblen_r, (r, s, n, state),
 {
 #ifdef _MB_CAPABLE
   int retval;
-  retval = __mbtowc (r, NULL, s, n, __locale_charset (), state);
+  retval = __MBTOWC (r, NULL, s, n, state);
 
   if (retval < 0)
     {
diff --git a/newlib/libc/stdlib/mbrtowc.c b/newlib/libc/stdlib/mbrtowc.c
index 550aaff..69e3acb 100644
--- a/newlib/libc/stdlib/mbrtowc.c
+++ b/newlib/libc/stdlib/mbrtowc.c
@@ -26,9 +26,9 @@ _DEFUN (_mbrtowc_r, (ptr, pwc, s, n, ps),
 #endif
 
   if (s == NULL)
-    retval = __mbtowc (ptr, NULL, "", 1, __locale_charset (), ps);
+    retval = __MBTOWC (ptr, NULL, "", 1, ps);
   else
-    retval = __mbtowc (ptr, pwc, s, n, __locale_charset (), ps);
+    retval = __MBTOWC (ptr, pwc, s, n, ps);
 
   if (retval == -1)
     {
@@ -63,9 +63,9 @@ _DEFUN (mbrtowc, (pwc, s, n, ps),
 #endif
 
   if (s == NULL)
-    retval = __mbtowc (reent, NULL, "", 1, __locale_charset (), ps);
+    retval = __MBTOWC (reent, NULL, "", 1, ps);
   else
-    retval = __mbtowc (reent, pwc, s, n, __locale_charset (), ps);
+    retval = __MBTOWC (reent, pwc, s, n, ps);
 
   if (retval == -1)
     {
diff --git a/newlib/libc/stdlib/mbstowcs_r.c b/newlib/libc/stdlib/mbstowcs_r.c
index cae1f06..4950499 100644
--- a/newlib/libc/stdlib/mbstowcs_r.c
+++ b/newlib/libc/stdlib/mbstowcs_r.c
@@ -18,7 +18,7 @@ _DEFUN (_mbstowcs_r, (reent, pwcs, s, n, state),
     n = (size_t) 1; /* Value doesn't matter as long as it's not 0. */
   while (n > 0)
     {
-      bytes = __mbtowc (r, pwcs, t, MB_CUR_MAX, __locale_charset (), state);
+      bytes = __MBTOWC (r, pwcs, t, MB_CUR_MAX, state);
       if (bytes < 0)
 	{
 	  state->__count = 0;
diff --git a/newlib/libc/stdlib/mbtowc.c b/newlib/libc/stdlib/mbtowc.c
index 3c7f84b..7b8be77 100644
--- a/newlib/libc/stdlib/mbtowc.c
+++ b/newlib/libc/stdlib/mbtowc.c
@@ -70,7 +70,7 @@ _DEFUN (mbtowc, (pwc, s, n),
   _REENT_CHECK_MISC(reent);
   ps = &(_REENT_MBTOWC_STATE(reent));
   
-  retval = __mbtowc (reent, pwc, s, n, __locale_charset (), ps);
+  retval = __MBTOWC (reent, pwc, s, n, ps);
   
   if (retval < 0)
     {
diff --git a/newlib/libc/stdlib/mbtowc_r.c b/newlib/libc/stdlib/mbtowc_r.c
index 986595c..116b4d8 100644
--- a/newlib/libc/stdlib/mbtowc_r.c
+++ b/newlib/libc/stdlib/mbtowc_r.c
@@ -7,15 +7,6 @@
 #include <errno.h>
 #include "local.h"
 
-int (*__mbtowc) (struct _reent *, wchar_t *, const char *, size_t,
-		 const char *, mbstate_t *)
-#ifdef __CYGWIN__
-   /* Cygwin starts up in UTF-8 mode. */
-   = __utf8_mbtowc;
-#else
-   = __ascii_mbtowc;
-#endif
-
 int
 _DEFUN (_mbtowc_r, (r, pwc, s, n, state),
         struct _reent *r   _AND
@@ -24,16 +15,15 @@ _DEFUN (_mbtowc_r, (r, pwc, s, n, state),
         size_t         n   _AND
         mbstate_t      *state)
 {
-  return __mbtowc (r, pwc, s, n, __locale_charset (), state);
+  return __MBTOWC (r, pwc, s, n, state);
 }
 
 int
-_DEFUN (__ascii_mbtowc, (r, pwc, s, n, charset, state),
+_DEFUN (__ascii_mbtowc, (r, pwc, s, n, state),
         struct _reent *r       _AND
         wchar_t       *pwc     _AND 
         const char    *s       _AND        
         size_t         n       _AND
-	const char    *charset _AND
         mbstate_t      *state)
 {
   wchar_t dummy;
@@ -106,14 +96,9 @@ static JIS_ACTION JIS_action_table[JIS_S_NUM][JIS_C_NUM] = {
 #define __state __count
 
 #ifdef _MB_EXTENDED_CHARSETS_ISO
-int
-_DEFUN (__iso_mbtowc, (r, pwc, s, n, charset, state),
-        struct _reent *r       _AND
-        wchar_t       *pwc     _AND 
-        const char    *s       _AND        
-        size_t         n       _AND
-	const char    *charset _AND
-        mbstate_t      *state)
+static int
+___iso_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+	       int iso_idx, mbstate_t *state)
 {
   wchar_t dummy;
   unsigned char *t = (unsigned char *)s;
@@ -129,7 +114,6 @@ _DEFUN (__iso_mbtowc, (r, pwc, s, n, charset, state),
 
   if (*t >= 0xa0)
     {
-      int iso_idx = __iso_8859_index (charset + 9);
       if (iso_idx >= 0)
 	{
 	  *pwc = __iso_8859_conv[iso_idx][*t - 0xa0];
@@ -149,17 +133,145 @@ _DEFUN (__iso_mbtowc, (r, pwc, s, n, charset, state),
 
   return 1;
 }
+
+static int
+__iso_8859_1_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		     mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, -1, state);
+}
+
+static int
+__iso_8859_2_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		     mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 0, state);
+}
+
+static int
+__iso_8859_3_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		     mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 1, state);
+}
+
+static int
+__iso_8859_4_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		     mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 2, state);
+}
+
+static int
+__iso_8859_5_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		     mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 3, state);
+}
+
+static int
+__iso_8859_6_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		     mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 4, state);
+}
+
+static int
+__iso_8859_7_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		     mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 5, state);
+}
+
+static int
+__iso_8859_8_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		     mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 6, state);
+}
+
+static int
+__iso_8859_9_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		     mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 7, state);
+}
+
+static int
+__iso_8859_10_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		      mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 8, state);
+}
+
+static int
+__iso_8859_11_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		      mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 9, state);
+}
+
+static int
+__iso_8859_13_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		      mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 10, state);
+}
+
+static int
+__iso_8859_14_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		      mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 11, state);
+}
+
+static int
+__iso_8859_15_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		      mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 12, state);
+}
+
+static int
+__iso_8859_16_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		      mbstate_t *state)
+{
+  return ___iso_mbtowc (r, pwc, s, n, 13, state);
+}
+
+static mbtowc_p __iso_8859_mbtowc[17] = {
+  NULL,
+  __iso_8859_1_mbtowc,
+  __iso_8859_2_mbtowc,
+  __iso_8859_3_mbtowc,
+  __iso_8859_4_mbtowc,
+  __iso_8859_5_mbtowc,
+  __iso_8859_6_mbtowc,
+  __iso_8859_7_mbtowc,
+  __iso_8859_8_mbtowc,
+  __iso_8859_9_mbtowc,
+  __iso_8859_10_mbtowc,
+  __iso_8859_11_mbtowc,
+  NULL,			/* No ISO 8859-12 */
+  __iso_8859_13_mbtowc,
+  __iso_8859_14_mbtowc,
+  __iso_8859_15_mbtowc,
+  __iso_8859_16_mbtowc
+};
+
+/* val *MUST* be valid!  All checks for validity are supposed to be
+   performed before calling this function. */
+mbtowc_p
+__iso_mbtowc (int val)
+{
+  return __iso_8859_mbtowc[val];
+}
 #endif /* _MB_EXTENDED_CHARSETS_ISO */
 
 #ifdef _MB_EXTENDED_CHARSETS_WINDOWS
-int
-_DEFUN (__cp_mbtowc, (r, pwc, s, n, charset, state),
-        struct _reent *r       _AND
-        wchar_t       *pwc     _AND 
-        const char    *s       _AND        
-        size_t         n       _AND
-	const char    *charset _AND
-        mbstate_t      *state)
+static int
+___cp_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+	      int cp_idx, mbstate_t *state)
 {
   wchar_t dummy;
   unsigned char *t = (unsigned char *)s;
@@ -175,7 +287,6 @@ _DEFUN (__cp_mbtowc, (r, pwc, s, n, charset, state),
 
   if (*t >= 0x80)
     {
-      int cp_idx = __cp_index (charset + 2);
       if (cp_idx >= 0)
 	{
 	  *pwc = __cp_conv[cp_idx][*t - 0x80];
@@ -195,15 +306,233 @@ _DEFUN (__cp_mbtowc, (r, pwc, s, n, charset, state),
 
   return 1;
 }
+
+static int
+__cp_437_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 0, state);
+}
+
+static int
+__cp_720_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 1, state);
+}
+
+static int
+__cp_737_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 2, state);
+}
+
+static int
+__cp_775_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 3, state);
+}
+
+static int
+__cp_850_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 4, state);
+}
+
+static int
+__cp_852_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 5, state);
+}
+
+static int
+__cp_855_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 6, state);
+}
+
+static int
+__cp_857_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 7, state);
+}
+
+static int
+__cp_858_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 8, state);
+}
+
+static int
+__cp_862_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 9, state);
+}
+
+static int
+__cp_866_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 10, state);
+}
+
+static int
+__cp_874_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 11, state);
+}
+
+static int
+__cp_1125_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 12, state);
+}
+
+static int
+__cp_1250_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 13, state);
+}
+
+static int
+__cp_1251_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 14, state);
+}
+
+static int
+__cp_1252_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 15, state);
+}
+
+static int
+__cp_1253_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 16, state);
+}
+
+static int
+__cp_1254_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 17, state);
+}
+
+static int
+__cp_1255_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 18, state);
+}
+
+static int
+__cp_1256_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 19, state);
+}
+
+static int
+__cp_1257_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 20, state);
+}
+
+static int
+__cp_1258_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		  mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 21, state);
+}
+
+static int
+__cp_20866_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		   mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 22, state);
+}
+
+static int
+__cp_21866_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		   mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 23, state);
+}
+
+static int
+__cp_101_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 24, state);
+}
+
+static int
+__cp_102_mbtowc (struct _reent *r, wchar_t *pwc, const char *s, size_t n,
+		 mbstate_t *state)
+{
+  return ___cp_mbtowc (r, pwc, s, n, 25, state);
+}
+
+static mbtowc_p __cp_xxx_mbtowc[26] = {
+  __cp_437_mbtowc,
+  __cp_720_mbtowc,
+  __cp_737_mbtowc,
+  __cp_775_mbtowc,
+  __cp_850_mbtowc,
+  __cp_852_mbtowc,
+  __cp_855_mbtowc,
+  __cp_857_mbtowc,
+  __cp_858_mbtowc,
+  __cp_862_mbtowc,
+  __cp_866_mbtowc,
+  __cp_874_mbtowc,
+  __cp_1125_mbtowc,
+  __cp_1250_mbtowc,
+  __cp_1251_mbtowc,
+  __cp_1252_mbtowc,
+  __cp_1253_mbtowc,
+  __cp_1254_mbtowc,
+  __cp_1255_mbtowc,
+  __cp_1256_mbtowc,
+  __cp_1257_mbtowc,
+  __cp_1258_mbtowc,
+  __cp_20866_mbtowc,
+  __cp_21866_mbtowc,
+  __cp_101_mbtowc,
+  __cp_102_mbtowc
+};
+
+/* val *MUST* be valid!  All checks for validity are supposed to be
+   performed before calling this function. */
+mbtowc_p
+__cp_mbtowc (int val)
+{
+  return __cp_xxx_mbtowc[__cp_val_index (val)];
+}
 #endif /* _MB_EXTENDED_CHARSETS_WINDOWS */
 
 int
-_DEFUN (__utf8_mbtowc, (r, pwc, s, n, charset, state),
+_DEFUN (__utf8_mbtowc, (r, pwc, s, n, state),
         struct _reent *r       _AND
         wchar_t       *pwc     _AND 
         const char    *s       _AND        
         size_t         n       _AND
-	const char    *charset _AND
         mbstate_t      *state)
 {
   wchar_t dummy;
@@ -401,12 +730,11 @@ _DEFUN (__utf8_mbtowc, (r, pwc, s, n, charset, state),
    because the underlying OS requires wchar_t == UTF-16. */
 #ifndef  __CYGWIN__
 int
-_DEFUN (__sjis_mbtowc, (r, pwc, s, n, charset, state),
+_DEFUN (__sjis_mbtowc, (r, pwc, s, n, state),
         struct _reent *r       _AND
         wchar_t       *pwc     _AND 
         const char    *s       _AND        
         size_t         n       _AND
-	const char    *charset _AND
         mbstate_t      *state)
 {
   wchar_t dummy;
@@ -459,12 +787,11 @@ _DEFUN (__sjis_mbtowc, (r, pwc, s, n, charset, state),
 }
 
 int
-_DEFUN (__eucjp_mbtowc, (r, pwc, s, n, charset, state),
+_DEFUN (__eucjp_mbtowc, (r, pwc, s, n, state),
         struct _reent *r       _AND
         wchar_t       *pwc     _AND 
         const char    *s       _AND        
         size_t         n       _AND
-	const char    *charset _AND
         mbstate_t      *state)
 {
   wchar_t dummy;
@@ -543,12 +870,11 @@ _DEFUN (__eucjp_mbtowc, (r, pwc, s, n, charset, state),
 }
 
 int
-_DEFUN (__jis_mbtowc, (r, pwc, s, n, charset, state),
+_DEFUN (__jis_mbtowc, (r, pwc, s, n, state),
         struct _reent *r       _AND
         wchar_t       *pwc     _AND 
         const char    *s       _AND        
         size_t         n       _AND
-	const char    *charset _AND
         mbstate_t      *state)
 {
   wchar_t dummy;
diff --git a/newlib/libc/stdlib/sb_charsets.c b/newlib/libc/stdlib/sb_charsets.c
index e668c4b..38583e5 100644
--- a/newlib/libc/stdlib/sb_charsets.c
+++ b/newlib/libc/stdlib/sb_charsets.c
@@ -2,8 +2,6 @@
 #include <wchar.h>
 
 #ifdef _MB_CAPABLE
-extern char *__locale_charset ();
-
 #ifdef _MB_EXTENDED_CHARSETS_ISO
 /* Tables for the ISO-8859-x to UTF conversion.  The first index into the
    table is a value computed from the value x (function __iso_8859_index),
@@ -674,26 +672,31 @@ __micro_atoi (const char *s)
 
 #ifdef _MB_EXTENDED_CHARSETS_ISO
 int
-__iso_8859_index (const char *charset_ext)
+__iso_8859_val_index (int val)
 {
-  int iso_idx = __micro_atoi (charset_ext);
-  if (iso_idx >= 2 && iso_idx <= 16)
+  if (val >= 2 && val <= 16)
     {
-      iso_idx -= 2;
-      if (iso_idx > 10)
-	--iso_idx;
-      return iso_idx;
+      val -= 2;
+      if (val > 10)
+	--val;
+      return (int) val;
     }
   return -1;
 }
+
+int
+__iso_8859_index (const char *charset_ext)
+{
+  return __iso_8859_val_index (__micro_atoi (charset_ext));
+}
 #endif /* _MB_EXTENDED_CHARSETS_ISO */
 
 #ifdef _MB_EXTENDED_CHARSETS_WINDOWS
 int
-__cp_index (const char *charset_ext)
+__cp_val_index (int val)
 {
-  int cp_idx = __micro_atoi (charset_ext);
-  switch (cp_idx)
+  int cp_idx;
+  switch (val)
     {
     case 437:
       cp_idx = 0;
@@ -779,5 +782,12 @@ __cp_index (const char *charset_ext)
     }
   return cp_idx;
 }
+
+int
+__cp_index (const char *charset_ext)
+{
+  int cp_idx = __cp_val_index (__micro_atoi (charset_ext));
+}
+
 #endif /* _MB_EXTENDED_CHARSETS_WINDOWS */
 #endif /* _MB_CAPABLE */
diff --git a/newlib/libc/stdlib/wcrtomb.c b/newlib/libc/stdlib/wcrtomb.c
index 4f30068..df7741a 100644
--- a/newlib/libc/stdlib/wcrtomb.c
+++ b/newlib/libc/stdlib/wcrtomb.c
@@ -25,9 +25,9 @@ _DEFUN (_wcrtomb_r, (ptr, s, wc, ps),
 #endif
 
   if (s == NULL)
-    retval = __wctomb (ptr, buf, L'\0', __locale_charset (), ps);
+    retval = __WCTOMB (ptr, buf, L'\0', ps);
   else
-    retval = __wctomb (ptr, s, wc, __locale_charset (), ps);
+    retval = __WCTOMB (ptr, s, wc, ps);
 
   if (retval == -1)
     {
@@ -62,9 +62,9 @@ _DEFUN (wcrtomb, (s, wc, ps),
 #endif
 
   if (s == NULL)
-    retval = __wctomb (reent, buf, L'\0', __locale_charset (), ps);
+    retval = __WCTOMB (reent, buf, L'\0', ps);
   else
-    retval = __wctomb (reent, s, wc, __locale_charset (), ps);
+    retval = __WCTOMB (reent, s, wc, ps);
 
   if (retval == -1)
     {
diff --git a/newlib/libc/stdlib/wcsnrtombs.c b/newlib/libc/stdlib/wcsnrtombs.c
index 99c8bd1..b09f7e1 100644
--- a/newlib/libc/stdlib/wcsnrtombs.c
+++ b/newlib/libc/stdlib/wcsnrtombs.c
@@ -138,7 +138,7 @@ _DEFUN (_wcsnrtombs_r, (r, dst, src, nwc, len, ps),
     {
       int count = ps->__count;
       wint_t wch = ps->__value.__wch;
-      int bytes = __wctomb (r, buff, *pwcs, __locale_charset (), ps);
+      int bytes = __WCTOMB (r, buff, *pwcs, ps);
       if (bytes == -1)
 	{
 	  r->_errno = EILSEQ;
@@ -164,7 +164,7 @@ _DEFUN (_wcsnrtombs_r, (r, dst, src, nwc, len, ps),
 	}
       else
 	{
-	  /* not enough room, we must back up state to before __wctomb call */
+	  /* not enough room, we must back up state to before __WCTOMB call */
 	  ps->__count = count;
 	  ps->__value.__wch = wch;
           len = 0;
diff --git a/newlib/libc/stdlib/wcstombs_r.c b/newlib/libc/stdlib/wcstombs_r.c
index 3bac8a3..0680cd7 100644
--- a/newlib/libc/stdlib/wcstombs_r.c
+++ b/newlib/libc/stdlib/wcstombs_r.c
@@ -20,7 +20,7 @@ _DEFUN (_wcstombs_r, (reent, s, pwcs, n, state),
       size_t num_bytes = 0;
       while (*pwcs != 0)
 	{
-	  bytes = __wctomb (r, buff, *pwcs++, __locale_charset (), state);
+	  bytes = __WCTOMB (r, buff, *pwcs++, state);
 	  if (bytes == -1)
 	    return -1;
 	  num_bytes += bytes;
@@ -31,7 +31,7 @@ _DEFUN (_wcstombs_r, (reent, s, pwcs, n, state),
     {
       while (n > 0)
         {
-          bytes = __wctomb (r, buff, *pwcs, __locale_charset (), state);
+          bytes = __WCTOMB (r, buff, *pwcs, state);
           if (bytes == -1)
             return -1;
           num_to_copy = (n > bytes ? bytes : (int)n);
diff --git a/newlib/libc/stdlib/wctob.c b/newlib/libc/stdlib/wctob.c
index eebaec8..61365a1 100644
--- a/newlib/libc/stdlib/wctob.c
+++ b/newlib/libc/stdlib/wctob.c
@@ -21,6 +21,5 @@ wctob (wint_t wc)
   reent = _REENT;
   _REENT_CHECK_MISC(reent);
 
-  return __wctomb (reent, (char *) pmb, wc, __locale_charset (), &mbs) == 1
-	  ? (int) pmb[0] : EOF;
+  return __WCTOMB (reent, (char *) pmb, wc, &mbs) == 1 ? (int) pmb[0] : EOF;
 }
diff --git a/newlib/libc/stdlib/wctomb.c b/newlib/libc/stdlib/wctomb.c
index 8d4ceb8..13892ff 100644
--- a/newlib/libc/stdlib/wctomb.c
+++ b/newlib/libc/stdlib/wctomb.c
@@ -61,8 +61,7 @@ _DEFUN (wctomb, (s, wchar),
 
         _REENT_CHECK_MISC(reent);
 
-        return __wctomb (reent, s, wchar, __locale_charset (),
-			 &(_REENT_WCTOMB_STATE(reent)));
+        return __WCTOMB (reent, s, wchar, &(_REENT_WCTOMB_STATE(reent)));
 #else /* not _MB_CAPABLE */
         if (s == NULL)
                 return 0;
diff --git a/newlib/libc/stdlib/wctomb_r.c b/newlib/libc/stdlib/wctomb_r.c
index c93962f..02b85e6 100644
--- a/newlib/libc/stdlib/wctomb_r.c
+++ b/newlib/libc/stdlib/wctomb_r.c
@@ -6,15 +6,6 @@
 #include "mbctype.h"
 #include "local.h"
 
-int (*__wctomb) (struct _reent *, char *, wchar_t, const char *charset,
-		 mbstate_t *)
-#ifdef __CYGWIN__
-   /* Cygwin starts up in UTF-8 mode. */
-    = __utf8_wctomb;
-#else
-    = __ascii_wctomb;
-#endif
-
 int
 _DEFUN (_wctomb_r, (r, s, wchar, state),
         struct _reent *r     _AND 
@@ -22,15 +13,14 @@ _DEFUN (_wctomb_r, (r, s, wchar, state),
         wchar_t        _wchar _AND
         mbstate_t     *state)
 {
-  return __wctomb (r, s, _wchar, __locale_charset (), state);
+  return __WCTOMB (r, s, _wchar, state);
 }
 
 int
-_DEFUN (__ascii_wctomb, (r, s, wchar, charset, state),
+_DEFUN (__ascii_wctomb, (r, s, wchar, state),
         struct _reent *r       _AND 
         char          *s       _AND
         wchar_t        _wchar  _AND
-	const char    *charset _AND
         mbstate_t     *state)
 {
   /* Avoids compiler warnings about comparisons that are always false
@@ -60,11 +50,10 @@ _DEFUN (__ascii_wctomb, (r, s, wchar, charset, state),
 #define __state __count
 
 int
-_DEFUN (__utf8_wctomb, (r, s, wchar, charset, state),
+_DEFUN (__utf8_wctomb, (r, s, wchar, state),
         struct _reent *r       _AND 
         char          *s       _AND
         wchar_t        _wchar  _AND
-	const char    *charset _AND
         mbstate_t     *state)
 {
   wint_t wchar = _wchar;
@@ -155,11 +144,10 @@ _DEFUN (__utf8_wctomb, (r, s, wchar, charset, state),
    because the underlying OS requires wchar_t == UTF-16. */
 #ifndef __CYGWIN__
 int
-_DEFUN (__sjis_wctomb, (r, s, wchar, charset, state),
+_DEFUN (__sjis_wctomb, (r, s, wchar, state),
         struct _reent *r       _AND 
         char          *s       _AND
         wchar_t        _wchar  _AND
-	const char    *charset _AND
         mbstate_t     *state)
 {
   wint_t wchar = _wchar;
@@ -190,11 +178,10 @@ _DEFUN (__sjis_wctomb, (r, s, wchar, charset, state),
 }
 
 int
-_DEFUN (__eucjp_wctomb, (r, s, wchar, charset, state),
+_DEFUN (__eucjp_wctomb, (r, s, wchar, state),
         struct _reent *r       _AND 
         char          *s       _AND
         wchar_t        _wchar  _AND
-	const char    *charset _AND
         mbstate_t     *state)
 {
   wint_t wchar = _wchar;
@@ -231,11 +218,10 @@ _DEFUN (__eucjp_wctomb, (r, s, wchar, charset, state),
 }
 
 int
-_DEFUN (__jis_wctomb, (r, s, wchar, charset, state),
+_DEFUN (__jis_wctomb, (r, s, wchar, state),
         struct _reent *r       _AND 
         char          *s       _AND
         wchar_t        _wchar  _AND
-	const char    *charset _AND
         mbstate_t     *state)
 {
   wint_t wchar = _wchar;
@@ -282,13 +268,9 @@ _DEFUN (__jis_wctomb, (r, s, wchar, charset, state),
 #endif /* !__CYGWIN__ */
 
 #ifdef _MB_EXTENDED_CHARSETS_ISO
-int
-_DEFUN (__iso_wctomb, (r, s, wchar, charset, state),
-        struct _reent *r       _AND 
-        char          *s       _AND
-        wchar_t        _wchar  _AND
-	const char    *charset _AND
-        mbstate_t     *state)
+static int
+___iso_wctomb (struct _reent *r, char *s, wchar_t _wchar, int iso_idx,
+	       mbstate_t *state)
 {
   wint_t wchar = _wchar;
 
@@ -298,7 +280,6 @@ _DEFUN (__iso_wctomb, (r, s, wchar, charset, state),
   /* wchars <= 0x9f translate to all ISO charsets directly. */
   if (wchar >= 0xa0)
     {
-      int iso_idx = __iso_8859_index (charset + 9);
       if (iso_idx >= 0)
 	{
 	  unsigned char mb;
@@ -326,16 +307,130 @@ _DEFUN (__iso_wctomb, (r, s, wchar, charset, state),
   *s = (char) wchar;
   return 1;
 }
+
+int __iso_8859_1_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			 mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, -1, state);
+}
+
+int __iso_8859_2_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			 mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 0, state);
+}
+
+int __iso_8859_3_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			 mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 1, state);
+}
+
+int __iso_8859_4_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			 mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 2, state);
+}
+
+int __iso_8859_5_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			 mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 3, state);
+}
+
+int __iso_8859_6_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			 mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 4, state);
+}
+
+int __iso_8859_7_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			 mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 5, state);
+}
+
+int __iso_8859_8_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			 mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 6, state);
+}
+
+int __iso_8859_9_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			 mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 7, state);
+}
+
+int __iso_8859_10_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			  mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 8, state);
+}
+
+int __iso_8859_11_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			  mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 9, state);
+}
+
+int __iso_8859_13_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			  mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 10, state);
+}
+
+int __iso_8859_14_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			  mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 11, state);
+}
+
+int __iso_8859_15_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			  mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 12, state);
+}
+
+int __iso_8859_16_wctomb (struct _reent *r, char *s, wchar_t _wchar,
+			  mbstate_t *state)
+{
+  return ___iso_wctomb (r, s, _wchar, 13, state);
+}
+
+static wctomb_p __iso_8859_wctomb[17] = {
+  NULL,
+  __iso_8859_1_wctomb,
+  __iso_8859_2_wctomb,
+  __iso_8859_3_wctomb,
+  __iso_8859_4_wctomb,
+  __iso_8859_5_wctomb,
+  __iso_8859_6_wctomb,
+  __iso_8859_7_wctomb,
+  __iso_8859_8_wctomb,
+  __iso_8859_9_wctomb,
+  __iso_8859_10_wctomb,
+  __iso_8859_11_wctomb,
+  NULL,			/* No ISO 8859-12 */
+  __iso_8859_13_wctomb,
+  __iso_8859_14_wctomb,
+  __iso_8859_15_wctomb,
+  __iso_8859_16_wctomb
+};
+
+/* val *MUST* be valid!  All checks for validity are supposed to be
+   performed before calling this function. */
+wctomb_p
+__iso_wctomb (int val)
+{
+  return __iso_8859_wctomb[val];
+}
 #endif /* _MB_EXTENDED_CHARSETS_ISO */
 
 #ifdef _MB_EXTENDED_CHARSETS_WINDOWS
-int
-_DEFUN (__cp_wctomb, (r, s, wchar, charset, state),
-        struct _reent *r       _AND 
-        char          *s       _AND
-        wchar_t        _wchar  _AND
-	const char    *charset _AND
-        mbstate_t     *state)
+static int
+___cp_wctomb (struct _reent *r, char *s, wchar_t _wchar, int cp_idx,
+	      mbstate_t *state)
 {
   wint_t wchar = _wchar;
 
@@ -344,7 +439,6 @@ _DEFUN (__cp_wctomb, (r, s, wchar, charset, state),
 
   if (wchar >= 0x80)
     {
-      int cp_idx = __cp_index (charset + 2);
       if (cp_idx >= 0)
 	{
 	  unsigned char mb;
@@ -372,5 +466,198 @@ _DEFUN (__cp_wctomb, (r, s, wchar, charset, state),
   *s = (char) wchar;
   return 1;
 }
+
+static int
+__cp_437_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 0, state);
+}
+
+static int
+__cp_720_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 1, state);
+}
+
+static int
+__cp_737_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 2, state);
+}
+
+static int
+__cp_775_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 3, state);
+}
+
+static int
+__cp_850_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 4, state);
+}
+
+static int
+__cp_852_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 5, state);
+}
+
+static int
+__cp_855_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 6, state);
+}
+
+static int
+__cp_857_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 7, state);
+}
+
+static int
+__cp_858_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 8, state);
+}
+
+static int
+__cp_862_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 9, state);
+}
+
+static int
+__cp_866_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 10, state);
+}
+
+static int
+__cp_874_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 11, state);
+}
+
+static int
+__cp_1125_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 12, state);
+}
+
+static int
+__cp_1250_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 13, state);
+}
+
+static int
+__cp_1251_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 14, state);
+}
+
+static int
+__cp_1252_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 15, state);
+}
+
+static int
+__cp_1253_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 16, state);
+}
+
+static int
+__cp_1254_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 17, state);
+}
+
+static int
+__cp_1255_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 18, state);
+}
+
+static int
+__cp_1256_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 19, state);
+}
+
+static int
+__cp_1257_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 20, state);
+}
+
+static int
+__cp_1258_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 21, state);
+}
+
+static int
+__cp_20866_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 22, state);
+}
+
+static int
+__cp_21866_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 23, state);
+}
+
+static int
+__cp_101_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 24, state);
+}
+
+static int
+__cp_102_wctomb (struct _reent *r, char *s, wchar_t _wchar, mbstate_t *state)
+{
+  return ___cp_wctomb (r, s, _wchar, 25, state);
+}
+
+static wctomb_p __cp_xxx_wctomb[26] = {
+  __cp_437_wctomb,
+  __cp_720_wctomb,
+  __cp_737_wctomb,
+  __cp_775_wctomb,
+  __cp_850_wctomb,
+  __cp_852_wctomb,
+  __cp_855_wctomb,
+  __cp_857_wctomb,
+  __cp_858_wctomb,
+  __cp_862_wctomb,
+  __cp_866_wctomb,
+  __cp_874_wctomb,
+  __cp_1125_wctomb,
+  __cp_1250_wctomb,
+  __cp_1251_wctomb,
+  __cp_1252_wctomb,
+  __cp_1253_wctomb,
+  __cp_1254_wctomb,
+  __cp_1255_wctomb,
+  __cp_1256_wctomb,
+  __cp_1257_wctomb,
+  __cp_1258_wctomb,
+  __cp_20866_wctomb,
+  __cp_21866_wctomb,
+  __cp_101_wctomb,
+  __cp_102_wctomb
+};
+
+/* val *MUST* be valid!  All checks for validity are supposed to be
+   performed before calling this function. */
+wctomb_p
+__cp_wctomb (int val)
+{
+  return __cp_xxx_wctomb[__cp_val_index (val)];
+}
 #endif /* _MB_EXTENDED_CHARSETS_WINDOWS */
 #endif /* _MB_CAPABLE */
diff --git a/newlib/libc/time/strptime.c b/newlib/libc/time/strptime.c
index 88b8978..a057450 100644
--- a/newlib/libc/time/strptime.c
+++ b/newlib/libc/time/strptime.c
@@ -68,7 +68,7 @@ is_leap_year (int year)
 
 /* Needed for strptime. */
 static int
-match_string (const char *__restrict *buf, const char **strs)
+match_string (const char *__restrict *buf, const char * const*strs)
 {
     int i = 0;