Add a new *scanf implementation, includeing the *wscanf functions.

  Should be standards compliant and with several optional features,
  including support for hexadecimal float notation, locale awareness,
  glibc-like locale-specific digit grouping with the `'' flag, and
  positional arg support.  I tested it pretty well (finding several
  bugs in glibc's scanf in the process), but it is brand new so be
  aware.

The *wprintf functions now support floating point output.  Also, a
  couple of bugs were squashed.  Finally, %a/%A conversions are
  now implemented.

Implement the glibc xlocale interface for thread-specific locale
  support.  Also add the various *_l(args, locale_t loc_arg) funcs.

  NOTE!!!  setlocale() is NOT threadsafe!  NOTE!!!

The strto{floating point} conversion functions are now locale aware.
  The also now support hexadecimal floating point notation.

Add the wcsto{floating point} conversion functions.

Fix a bug in mktime() related to dst.  Note that unlike glibc's mktime,
  uClibc's version always normalizes the struct tm before attempting
  to determine the correct dst setting if tm_isdst == -1 on entry.

Add a stub version of the libintl functions.  (untested)

Fixed a known memory leak in setlocale() related to the collation data.

Add lots of new config options (which Erik agreed to sort out :-),
  including finally exposing some of the stripped down stdio configs.
  Be careful with those though, as they haven't been tested in a
  long time.


(temporary) GOTCHAs...

The ctype functions are currently incorrect for 8-bit locales.  They
  will be fixed shortly.

The ctype functions are now table-based, resulting in larger staticly
  linked binaries.  I'll be adding an option to use the old approach
  in the stub locale configuration.

5 files changed, 92 insertions, 0 deletions

diff --git a/libpthread/linuxthreads/Makefile b/libpthread/linuxthreads/Makefile
index 748776e71..880fda291 100644
--- a/libpthread/linuxthreads/Makefile
+++ b/libpthread/linuxthreads/Makefile
@@ -45,6 +45,11 @@ CSRC=attr.c cancel.c condvar.c errno.c events.c join.c lockfile.c manager.c \
 	mutex.c oldsemaphore.c pt-machine.c ptfork.c pthread.c \
 	ptlongjmp.c rwlock.c semaphore.c signals.c specific.c spinlock.c \
 	wrapsyscall.c #weaks.c
+
+ifeq ($(UCLIBC_HAS_XLOCALE),y)
+	CSRC += locale.c
+endif
+
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 OBJS=$(COBJS)
 
diff --git a/libpthread/linuxthreads/internals.h b/libpthread/linuxthreads/internals.h
index 528acddc3..bce6b7efe 100644
--- a/libpthread/linuxthreads/internals.h
+++ b/libpthread/linuxthreads/internals.h
@@ -28,6 +28,9 @@
 #include "pt-machine.h"
 #include "semaphore.h"
 #include "../linuxthreads_db/thread_dbP.h"
+#ifdef __UCLIBC_HAS_XLOCALE__
+#include <bits/uClibc_locale.h>
+#endif /* __UCLIBC_HAS_XLOCALE__ */
 
 /* Use a funky version in a probably vein attempt at preventing gdb 
  * from dlopen()'ing glibc's libthread_db library... */
@@ -172,6 +175,9 @@ struct _pthread_descr_struct {
   pthread_readlock_info *p_readlock_free;  /* Free list of structs */
   int p_untracked_readlock_count;	/* Readlocks not tracked by list */
   /* New elements must be added at the end.  */
+#ifdef __UCLIBC_HAS_XLOCALE__
+  __locale_t locale; /* thread-specific locale from uselocale() only! */
+#endif /* __UCLIBC_HAS_XLOCALE__ */
 } __attribute__ ((aligned(32))); /* We need to align the structure so that
 				    doubles are aligned properly.  This is 8
 				    bytes on MIPS and 16 bytes on MIPS64.
diff --git a/libpthread/linuxthreads/locale.c b/libpthread/linuxthreads/locale.c
new file mode 100644
index 000000000..c3ebbc285
--- /dev/null
+++ b/libpthread/linuxthreads/locale.c
@@ -0,0 +1,58 @@
+/*  Copyright (C) 2003     Manuel Novoa III
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <features.h>
+#include "pthread.h"
+#include "internals.h"
+#include <locale.h>
+#include <assert.h>
+#include <stdlib.h>
+
+extern struct _pthread_descr_struct __pthread_initial_thread;
+
+__locale_t __curlocale(void)
+{
+	pthread_descr self = thread_self();
+
+#ifdef NDEBUG
+	return THREAD_GETMEM (self, locale);
+#else
+	{
+		__locale_t r = THREAD_GETMEM (self, locale);
+
+		assert(r);
+
+		return r;
+	}
+#endif
+}
+
+__locale_t __curlocale_set(__locale_t newloc)
+{
+	__locale_t oldloc;
+	pthread_descr self = thread_self();
+
+	oldloc = THREAD_GETMEM (self, locale);
+
+	assert(newloc != LC_GLOBAL_LOCALE);
+	assert(oldloc);
+
+	THREAD_SETMEM (self, locale, newloc);
+
+	return oldloc;
+}
diff --git a/libpthread/linuxthreads/manager.c b/libpthread/linuxthreads/manager.c
index f1c9b93af..f7301bc52 100644
--- a/libpthread/linuxthreads/manager.c
+++ b/libpthread/linuxthreads/manager.c
@@ -134,6 +134,11 @@ int __pthread_manager(void *arg)
   __pthread_manager_thread.p_errnop = &__pthread_manager_thread.p_errno;
   __pthread_manager_thread.p_h_errnop = &__pthread_manager_thread.p_h_errno;
 
+#ifdef __UCLIBC_HAS_XLOCALE__
+  /* Initialize thread's locale to the global locale. */
+  __pthread_manager_thread.locale = __global_locale;
+#endif /* __UCLIBC_HAS_XLOCALE__ */
+
   /* Block all signals except __pthread_sig_cancel and SIGTRAP */
   sigfillset(&manager_mask);
   sigdelset(&manager_mask, __pthread_sig_cancel); /* for thread termination */
@@ -506,6 +511,10 @@ static int pthread_handle_create(pthread_t *thread, const pthread_attr_t *attr,
   new_thread->p_canceltype = PTHREAD_CANCEL_DEFERRED;
   new_thread->p_errnop = &new_thread->p_errno;
   new_thread->p_h_errnop = &new_thread->p_h_errno;
+#ifdef __UCLIBC_HAS_XLOCALE__
+  /* Initialize thread's locale to the global locale. */
+  new_thread->locale = __global_locale;
+#endif /* __UCLIBC_HAS_XLOCALE__ */
   new_thread->p_guardaddr = guardaddr;
   new_thread->p_guardsize = guardsize;
   new_thread->p_self = new_thread;
diff --git a/libpthread/linuxthreads/pthread.c b/libpthread/linuxthreads/pthread.c
index 22e3f6a9c..1c24cccd8 100644
--- a/libpthread/linuxthreads/pthread.c
+++ b/libpthread/linuxthreads/pthread.c
@@ -99,6 +99,10 @@ struct _pthread_descr_struct __pthread_initial_thread = {
   NULL,	                      /* pthread_readlock_info *p_readlock_list; */
   NULL,                       /* pthread_readlock_info *p_readlock_free; */
   0                           /* int p_untracked_readlock_count; */
+#ifdef __UCLIBC_HAS_XLOCALE__
+  ,
+  NULL,                       /* __locale_t locale; */
+#endif /* __UCLIBC_HAS_XLOCALE__ */
 };
 
 /* Descriptor of the manager thread; none of this is used but the error
@@ -151,6 +155,10 @@ struct _pthread_descr_struct __pthread_manager_thread = {
   NULL,	                      /* pthread_readlock_info *p_readlock_list; */
   NULL,                       /* pthread_readlock_info *p_readlock_free; */
   0                           /* int p_untracked_readlock_count; */
+#ifdef __UCLIBC_HAS_XLOCALE__
+  ,
+  NULL,                       /* __locale_t locale; */
+#endif /* __UCLIBC_HAS_XLOCALE__ */
 };
 
 /* Pointer to the main thread (the father of the thread manager thread) */
@@ -318,6 +326,12 @@ static void pthread_initialize(void)
   /* The errno/h_errno variable of the main thread are the global ones.  */
   __pthread_initial_thread.p_errnop = &_errno;
   __pthread_initial_thread.p_h_errnop = &_h_errno;
+
+#ifdef __UCLIBC_HAS_XLOCALE__
+  /* The locale of the main thread is the current locale in use. */
+  __pthread_initial_thread.locale = __curlocale_var;
+#endif /* __UCLIBC_HAS_XLOCALE__ */
+
   /* Play with the stack size limit to make sure that no stack ever grows
      beyond STACK_SIZE minus two pages (one page for the thread descriptor
      immediately beyond, and one page to act as a guard page). */