2002-08-17 Jeff Johnston <jjohnstn@redhat.com>

        *  Makefile.am: Move cmath stuff into libc/sys/linux.
        *  Makefile.in: Regenerated.
        *  configure.host: Default -DMB_CAPABLE for x86-linux.
        *  libc/include/reent.h: Define _sbrk to take signed int argument.
        *  libc/include/sys/unistd.h: Ditto for _sbrk_r and sbrk.
        *  libc/locale/locale.c[MB_CAPABLE]: Add LC_MESSAGES support and
        make locale name checking more efficient.  Also allow "C-ISO-8859-1"
        locale for LC_CTYPE and LC_MESSAGES.
        *  libc/reent/sbrkr.c: Change prototype to take ptrdiff_t.
        *  libc/sys/linux/brk.c: Change sbrk prototype.
        *  libc/sys/linux/include/time.h: Remove Cygwin stuff and
        include <sys/features.h>.
        (CLOCK_THREAD_CPUTIME): Renamed to CLOCK_THREAD_CPUTIME_ID.
        (CLOCK_PROCESS_CPUTIME): Renamed to CLOCK_PROCESS_CPUTIME_ID.
        *  libc/sys/linux/sys/cdefs.h: Replace with glibc sys/cdefs.h
        with a few local additions.
        *  libc/sys/linux/sys/features.h: New file.
        *  libc/sys/linux/sys/unistd.h: Change _sbrk_r and sbrk prototypes
        to take signed argument.
        *  libc/syscalls/syssbrk.c: Change sbrk, _sbrk_r, and _sbrk
        prototypes to take signed size argument.

5 files changed, 230 insertions, 146 deletions

diff --git a/newlib/libc/sys/linux/brk.c b/newlib/libc/sys/linux/brk.c
index 87ebfe0e7..91bb367e7 100644
--- a/newlib/libc/sys/linux/brk.c
+++ b/newlib/libc/sys/linux/brk.c
@@ -28,7 +28,7 @@ int brk(void *end_data_segment)
 }
 
 
-void *sbrk(size_t increment) /* SHOULD be ptrdiff_t */
+void *sbrk(ptrdiff_t increment) /* SHOULD be ptrdiff_t */
 {
     char *old_brk,*new_brk;
 
diff --git a/newlib/libc/sys/linux/include/time.h b/newlib/libc/sys/linux/include/time.h
index c27e502e6..2db33242e 100644
--- a/newlib/libc/sys/linux/include/time.h
+++ b/newlib/libc/sys/linux/include/time.h
@@ -104,22 +104,9 @@ extern __IMPORT char *_tzname[2];
 #define tzname _tzname
 #endif
 
-/* CYGWIN also exposes daylight and timezone in the name space */
-#ifdef __CYGWIN__
-#ifndef daylight
-#define daylight _daylight
-#endif
-#if timezonevar
-#ifndef timezone
-#define timezone ((long int) _timezone)
-#endif
-#else
-char *_EXFUN(timezone, (void));
-#endif
-#endif /* __CYGWIN__ */
 #endif /* !__STRICT_ANSI__ */
 
-#include <bits/posix_opt.h>
+#include <sys/features.h>
 
 #if defined(_POSIX_TIMERS)
 
@@ -187,7 +174,7 @@ int _EXFUN(nanosleep, (const struct timespec  *rqtp, struct timespec *rmtp));
    the identifier of the CPU_time clock associated with the PROCESS
    making the function call.  */
 
-#define CLOCK_PROCESS_CPUTIME (clockid_t)2
+#define CLOCK_PROCESS_CPUTIME_ID (clockid_t)2
 
 #endif
 
@@ -197,7 +184,7 @@ int _EXFUN(nanosleep, (const struct timespec  *rqtp, struct timespec *rmtp));
     the identifier of the CPU_time clock associated with the THREAD
     making the function call.  */
 
-#define CLOCK_THREAD_CPUTIME (clockid_t)3
+#define CLOCK_THREAD_CPUTIME_ID (clockid_t)3
 
 #endif
 
diff --git a/newlib/libc/sys/linux/sys/cdefs.h b/newlib/libc/sys/linux/sys/cdefs.h
index 1108a7dab..459785bcb 100644
--- a/newlib/libc/sys/linux/sys/cdefs.h
+++ b/newlib/libc/sys/linux/sys/cdefs.h
@@ -1,125 +1,230 @@
-/* libc/sys/linux/sys/cdefs.h - Helper macros for K&R vs. ANSI C compat. */
+/* Copyright (C) 1992,93,94,95,96,97,98,99,2000,2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-/* Written 2000 by Werner Almesberger */
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
 
-/*
- * Copyright (c) 1991, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Berkeley Software Design, Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *	@(#)cdefs.h	8.8 (Berkeley) 1/9/95
- * $FreeBSD: src/sys/sys/cdefs.h,v 1.54 2002/05/11 03:58:24 alfred Exp $
- */
-
-#ifndef _SYS_CDEFS_H
-#define _SYS_CDEFS_H
+   The GNU C 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef	_SYS_CDEFS_H
+#define	_SYS_CDEFS_H	1
+
+/* We are almost always included from features.h. */
+#ifndef _FEATURES_H
+# include <features.h>
+#endif
+
+/* The GNU libc does not support any K&R compilers or the traditional mode
+   of ISO C compilers anymore.  Check for some of the combinations not
+   anymore supported.  */
+#if defined __GNUC__ && !defined __STDC__
+# error "You need a ISO C conforming compiler to use the glibc headers"
+#endif
 
 #define __FBSDID(x) /* nothing */
-/*
- * Note: the goal here is not compatibility to K&R C. Since we know that we
- * have GCC which understands ANSI C perfectly well, we make use of this.
- */
-
-#define __P(args)	args
-#define __PMT(args)	args
-#define __const		const
-#define __signed	signed
-#define __volatile	volatile
-#define __DOTS    	, ...
-#define __THROW
 
+/* Some user header file might have defined this before.  */
+#undef	__P
+#undef	__PMT
+
+#ifdef __GNUC__
+
+/* GCC can always grok prototypes.  For C++ programs we add throw()
+   to help it optimize the function calls.  But this works only with
+   gcc 2.8.x and egcs.  */
+# if defined __cplusplus && __GNUC_PREREQ (2,8)
+#  define __THROW	throw ()
+# else
+#  define __THROW
+# endif
+# define __P(args)	args __THROW
+/* This macro will be used for functions which might take C++ callback
+   functions.  */
+# define __PMT(args)	args
+
+#else	/* Not GCC.  */
+
+# define __inline		/* No inline functions.  */
+
+# define __THROW
+# define __P(args)	args
+# define __PMT(args)	args
+
+# define __const	const
+# define __signed	signed
+# define __volatile	volatile
+
+#endif	/* GCC.  */
+
+/* For these things, GCC behaves the ANSI way normally,
+   and the non-ANSI way under -traditional.  */
+
+#define __CONCAT(x,y)	x ## y
+#define __STRING(x)	#x
+
+/* This is not a typedef so `const __ptr_t' does the right thing.  */
 #define __ptr_t void *
 #define __long_double_t  long double
 
-#define __attribute_malloc__
-#define __attribute_pure__
-#define __attribute_format_strfmon__(a,b)
-#define __flexarr      [0]
-#define __restrict_arr
 
-#ifdef  __cplusplus
-# define __BEGIN_DECLS  extern "C" {
-# define __END_DECLS    }
+/* C++ needs to know that types and declarations are C, not C++.  */
+#ifdef	__cplusplus
+# define __BEGIN_DECLS	extern "C" {
+# define __END_DECLS	}
 #else
 # define __BEGIN_DECLS
 # define __END_DECLS
 #endif
 
+
+/* Support for bounded pointers.  */
 #ifndef __BOUNDED_POINTERS__
-# define __bounded      /* nothing */
-# define __unbounded    /* nothing */
-# define __ptrvalue     /* nothing */
+# define __bounded	/* nothing */
+# define __unbounded	/* nothing */
+# define __ptrvalue	/* nothing */
 #endif
 
 
-#ifdef __GNUC__
-#define	__strong_reference(sym,aliassym)	\
-	extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym)));
-#ifdef __ELF__
-#ifdef __STDC__
-#define	__weak_reference(sym,alias)	\
-	__asm__(".weak " #alias);	\
-	__asm__(".equ "  #alias ", " #sym)
-#define	__warn_references(sym,msg)	\
-	__asm__(".section .gnu.warning." #sym);	\
-	__asm__(".asciz \"" msg "\"");	\
-	__asm__(".previous")
+/* Support for flexible arrays.  */
+#if __GNUC_PREREQ (2,97)
+/* GCC 2.97 supports C99 flexible array members.  */
+# define __flexarr	[]
 #else
-#define	__weak_reference(sym,alias)	\
-	__asm__(".weak alias");		\
-	__asm__(".equ alias, sym")
-#define	__warn_references(sym,msg)	\
-	__asm__(".section .gnu.warning.sym"); \
-	__asm__(".asciz \"msg\"");	\
-	__asm__(".previous")
-#endif	/* __STDC__ */
-#else	/* !__ELF__ */
-#ifdef __STDC__
-#define	__weak_reference(sym,alias)	\
-	__asm__(".stabs \"_" #alias "\",11,0,0,0");	\
-	__asm__(".stabs \"_" #sym "\",1,0,0,0")
-#define	__warn_references(sym,msg)	\
-	__asm__(".stabs \"" msg "\",30,0,0,0");		\
-	__asm__(".stabs \"_" #sym "\",1,0,0,0")
+# ifdef __GNUC__
+#  define __flexarr	[0]
+# else
+#  if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+#   define __flexarr	[]
+#  else
+/* Some other non-C99 compiler.  Approximate with [1].  */
+#   define __flexarr	[1]
+#  endif
+# endif
+#endif
+
+
+/* __asm__ ("xyz") is used throughout the headers to rename functions
+   at the assembly language level.  This is wrapped by the __REDIRECT
+   macro, in order to support compilers that can do this some other
+   way.  When compilers don't support asm-names at all, we have to do
+   preprocessor tricks instead (which don't have exactly the right
+   semantics, but it's the best we can do).
+
+   Example:
+   int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid); */
+
+#if defined __GNUC__ && __GNUC__ >= 2
+
+# define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
+# define __ASMNAME(cname)  __ASMNAME2 (__USER_LABEL_PREFIX__, cname)
+# define __ASMNAME2(prefix, cname) __STRING (prefix) cname
+
+/*
+#elif __SOME_OTHER_COMPILER__
+
+# define __REDIRECT(name, proto, alias) name proto; \
+	_Pragma("let " #name " = " #alias)
+*/
+#endif
+
+/* GCC has various useful declarations that can be made with the
+   `__attribute__' syntax.  All of the ways we use this do fine if
+   they are omitted for compilers that don't understand it. */
+#if !defined __GNUC__ || __GNUC__ < 2
+# define __attribute__(xyz)	/* Ignore */
+#endif
+
+/* At some point during the gcc 2.96 development the `malloc' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.  */
+#if __GNUC_PREREQ (2,96)
+# define __attribute_malloc__ __attribute__ ((__malloc__))
+#else
+# define __attribute_malloc__ /* Ignore */
+#endif
+
+/* At some point during the gcc 2.96 development the `pure' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.  */
+#if __GNUC_PREREQ (2,96)
+# define __attribute_pure__ __attribute__ ((__pure__))
 #else
-#define	__weak_reference(sym,alias)	\
-	__asm__(".stabs \"_/**/alias\",11,0,0,0");	\
-	__asm__(".stabs \"_/**/sym\",1,0,0,0")
-#define	__warn_references(sym,msg)	\
-	__asm__(".stabs msg,30,0,0,0");			\
-	__asm__(".stabs \"_/**/sym\",1,0,0,0")
-#endif	/* __STDC__ */
-#endif	/* __ELF__ */
-#endif	/* __GNUC__ */
-
-#endif /* _SYS_CDEFS_H */
+# define __attribute_pure__ /* Ignore */
+#endif
+
+/* At some point during the gcc 3.1 development the `used' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.  */
+#if __GNUC_PREREQ (3,1)
+# define __attribute_used__ __attribute__ ((__used__))
+# define __attribute_noinline__ __attribute__ ((__noinline__))
+#else
+# define __attribute_used__ __attribute__ ((__unused__))
+# define __attribute_noinline__ /* Ignore */
+#endif
+
+/* At some point during the gcc 2.8 development the `format_arg' attribute
+   for functions was introduced.  We don't want to use it unconditionally
+   (although this would be possible) since it generates warnings.
+   If several `format_arg' attributes are given for the same function, in
+   gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+   all designated arguments are considered.  */
+#if __GNUC_PREREQ (2,8)
+# define __attribute_format_arg__(x) __attribute__ ((__format_arg__ (x)))
+#else
+# define __attribute_format_arg__(x) /* Ignore */
+#endif
+
+/* At some point during the gcc 2.97 development the `strfmon' format
+   attribute for functions was introduced.  We don't want to use it
+   unconditionally (although this would be possible) since it
+   generates warnings.  */
+#if __GNUC_PREREQ (2,97)
+# define __attribute_format_strfmon__(a,b) \
+  __attribute__ ((__format__ (__strfmon__, a, b)))
+#else
+# define __attribute_format_strfmon__(a,b) /* Ignore */
+#endif
+
+/* It is possible to compile containing GCC extensions even if GCC is
+   run in pedantic mode if the uses are carefully marked using the
+   `__extension__' keyword.  But this is not generally available before
+   version 2.8.  */
+#if !__GNUC_PREREQ (2,8)
+# define __extension__		/* Ignore */
+#endif
+
+/* __restrict is known in EGCS 1.2 and above. */
+#if !__GNUC_PREREQ (2,92)
+# define __restrict	/* Ignore */
+#endif
+
+/* ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+     array_name[restrict]
+   GCC 3.1 supports this.  */
+#if __GNUC_PREREQ (3,1) && !defined __GNUG__
+# define __restrict_arr	__restrict
+#else
+# ifdef __GNUC__
+#  define __restrict_arr	/* Not supported in old GCC.  */
+# else
+#  if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+#   define __restrict_arr	restrict
+#  else
+/* Some other non-C99 compiler.  */
+#   define __restrict_arr	/* Not supported.  */
+#  endif
+# endif
+#endif
+
+#endif	 /* sys/cdefs.h */
diff --git a/newlib/libc/sys/linux/sys/features.h b/newlib/libc/sys/linux/sys/features.h
new file mode 100644
index 000000000..34cd0eb80
--- /dev/null
+++ b/newlib/libc/sys/linux/sys/features.h
@@ -0,0 +1,16 @@
+#ifndef _SYS_FEATURES_H
+#define _SYS_FEATURES_H
+
+#include <bits/posix_opt.h>
+
+/* We do not support asynchronous I/O.  */
+#undef _POSIX_ASYNCHRONOUS_IO
+#undef _POSIX_ASYNC_IO
+#undef _LFS_ASYNCHRONOUS_IO
+#undef _LFS64_ASYNCHRONOUS_IO
+
+/* POSIX message queues are supported.  */
+#undef	_POSIX_MESSAGE_PASSING
+#define	_POSIX_MESSAGE_PASSING 1
+
+#endif /* _SYS_FEATURES_H */
diff --git a/newlib/libc/sys/linux/sys/unistd.h b/newlib/libc/sys/linux/sys/unistd.h
index 062a16282..dd3f0f7ea 100644
--- a/newlib/libc/sys/linux/sys/unistd.h
+++ b/newlib/libc/sys/linux/sys/unistd.h
@@ -23,9 +23,7 @@ unsigned  _EXFUN(alarm, (unsigned __secs ));
 int     _EXFUN(chdir, (const char *__path ));
 int     _EXFUN(chmod, (const char *__path, mode_t __mode ));
 int     _EXFUN(chown, (const char *__path, uid_t __owner, gid_t __group ));
-#if defined(__CYGWIN__) || defined(__rtems__)
 int     _EXFUN(chroot, (const char *__path ));
-#endif
 int     _EXFUN(close, (int __fildes ));
 char    _EXFUN(*ctermid, (char *__s ));
 char    _EXFUN(*cuserid, (char *__s ));
@@ -40,18 +38,14 @@ int     _EXFUN(execlp, (const char *__file, const char *, ... ));
 int     _EXFUN(execv, (const char *__path, char * const __argv[] ));
 int     _EXFUN(execve, (const char *__path, char * const __argv[], char * const __envp[] ));
 int     _EXFUN(execvp, (const char *__file, char * const __argv[] ));
-#if defined(__CYGWIN__) || defined(__rtems__)
 int     _EXFUN(fchdir, (int __fildes));
-#endif
 int     _EXFUN(fchmod, (int __fildes, mode_t __mode ));
 int     _EXFUN(fchown, (int __fildes, uid_t __owner, gid_t __group ));
 pid_t   _EXFUN(fork, (void ));
 long    _EXFUN(fpathconf, (int __fd, int __name ));
 int     _EXFUN(fsync, (int __fd));
 char    _EXFUN(*getcwd, (char *__buf, size_t __size ));
-#if defined(__CYGWIN__)
 int	_EXFUN(getdomainname ,(char *__name, size_t __len));
-#endif
 gid_t   _EXFUN(getegid, (void ));
 uid_t   _EXFUN(geteuid, (void ));
 gid_t   _EXFUN(getgid, (void ));
@@ -67,11 +61,8 @@ pid_t   _EXFUN(getpgrp, (void ));
 pid_t   _EXFUN(getpid, (void ));
 pid_t   _EXFUN(getppid, (void ));
 uid_t   _EXFUN(getuid, (void ));
-#ifdef __CYGWIN__
 char *	_EXFUN(getusershell, (void));
 char    _EXFUN(*getwd, (char *__buf ));
-int	_EXFUN(iruserok, (unsigned long raddr, int superuser, const char *ruser, const char *luser));
-#endif
 int     _EXFUN(isatty, (int __fildes ));
 int     _EXFUN(lchown, (const char *__path, uid_t __owner, gid_t __group ));
 int     _EXFUN(link, (const char *__path1, const char *__path2 ));
@@ -86,30 +77,15 @@ int     _EXFUN(pipe, (int __fildes[2] ));
 ssize_t _EXFUN(pread, (int __fd, void *__buf, size_t __nbytes, off_t __offset));
 ssize_t _EXFUN(pwrite, (int __fd, const void *__buf, size_t __nbytes, off_t __offset));
 _READ_WRITE_RETURN_TYPE _EXFUN(read, (int __fd, void *__buf, size_t __nbyte ));
-#if defined(__CYGWIN__)
-int	_EXFUN(revoke, (char *path));
-#endif
 int     _EXFUN(rmdir, (const char *__path ));
-#if defined(__CYGWIN__)
-int	_EXFUN(ruserok, (const char *rhost, int superuser, const char *ruser, const char *luser));
-#endif
-#if defined(__rtems__)
 void *  _EXFUN(sbrk,  (ptrdiff_t __incr));
-#else
-void *  _EXFUN(sbrk,  (size_t __incr));
-#endif
-#if defined(__CYGWIN__)
 int     _EXFUN(setegid, (gid_t __gid ));
 int     _EXFUN(seteuid, (uid_t __uid ));
-#endif
 int     _EXFUN(setgid, (gid_t __gid ));
 int     _EXFUN(setpgid, (pid_t __pid, pid_t __pgid ));
 int     _EXFUN(setpgrp, (void ));
 pid_t   _EXFUN(setsid, (void ));
 int     _EXFUN(setuid, (uid_t __uid ));
-#if defined(__CYGWIN__)
-void	_EXFUN(setusershell, (void));
-#endif
 unsigned _EXFUN(sleep, (unsigned int __seconds ));
 void    _EXFUN(swab, (const void *, void *, ssize_t));
 long    _EXFUN(sysconf, (int __name ));