3 files changed, 81 insertions, 10 deletions
diff --git a/newlib/libc/reent/Makefile.am b/newlib/libc/reent/Makefile.am
index b695e2941..0d21285a1 100644
--- a/newlib/libc/reent/Makefile.am
+++ b/newlib/libc/reent/Makefile.am
@@ -37,6 +37,7 @@ GENERAL_SOURCES = \
 	fstatr.c \
 	getreent.c \
 	gettimeofdayr.c \
+	isattyr.c \
 	linkr.c \
 	lseekr.c \
 	openr.c \
diff --git a/newlib/libc/reent/Makefile.in b/newlib/libc/reent/Makefile.in
index 282e28d9d..5677cc4aa 100644
--- a/newlib/libc/reent/Makefile.in
+++ b/newlib/libc/reent/Makefile.in
@@ -58,13 +58,13 @@ lib_a_LIBADD =
 am__objects_1 = lib_a-closer.$(OBJEXT) lib_a-reent.$(OBJEXT) \
 	lib_a-impure.$(OBJEXT) lib_a-fcntlr.$(OBJEXT) \
 	lib_a-fstatr.$(OBJEXT) lib_a-getreent.$(OBJEXT) \
-	lib_a-gettimeofdayr.$(OBJEXT) lib_a-linkr.$(OBJEXT) \
-	lib_a-lseekr.$(OBJEXT) lib_a-openr.$(OBJEXT) \
-	lib_a-readr.$(OBJEXT) lib_a-renamer.$(OBJEXT) \
-	lib_a-signalr.$(OBJEXT) lib_a-signgam.$(OBJEXT) \
-	lib_a-sbrkr.$(OBJEXT) lib_a-statr.$(OBJEXT) \
-	lib_a-timesr.$(OBJEXT) lib_a-unlinkr.$(OBJEXT) \
-	lib_a-writer.$(OBJEXT)
+	lib_a-gettimeofdayr.$(OBJEXT) lib_a-isattyr.$(OBJEXT) \
+	lib_a-linkr.$(OBJEXT) lib_a-lseekr.$(OBJEXT) \
+	lib_a-openr.$(OBJEXT) lib_a-readr.$(OBJEXT) \
+	lib_a-renamer.$(OBJEXT) lib_a-signalr.$(OBJEXT) \
+	lib_a-signgam.$(OBJEXT) lib_a-sbrkr.$(OBJEXT) \
+	lib_a-statr.$(OBJEXT) lib_a-timesr.$(OBJEXT) \
+	lib_a-unlinkr.$(OBJEXT) lib_a-writer.$(OBJEXT)
 @HAVE_STDIO64_DIR_TRUE@am__objects_2 = lib_a-fstat64r.$(OBJEXT) \
 @HAVE_STDIO64_DIR_TRUE@	lib_a-lseek64r.$(OBJEXT) \
 @HAVE_STDIO64_DIR_TRUE@	lib_a-open64r.$(OBJEXT)
@@ -81,9 +81,9 @@ lib_a_OBJECTS = $(am_lib_a_OBJECTS)
 LTLIBRARIES = $(noinst_LTLIBRARIES)
 libreent_la_LIBADD =
 am__objects_6 = closer.lo reent.lo impure.lo fcntlr.lo fstatr.lo \
-	getreent.lo gettimeofdayr.lo linkr.lo lseekr.lo openr.lo \
-	readr.lo renamer.lo signalr.lo signgam.lo sbrkr.lo statr.lo \
-	timesr.lo unlinkr.lo writer.lo
+	getreent.lo gettimeofdayr.lo isattyr.lo linkr.lo lseekr.lo \
+	openr.lo readr.lo renamer.lo signalr.lo signgam.lo sbrkr.lo \
+	statr.lo timesr.lo unlinkr.lo writer.lo
 @HAVE_STDIO64_DIR_TRUE@am__objects_7 = fstat64r.lo lseek64r.lo \
 @HAVE_STDIO64_DIR_TRUE@	open64r.lo
 am__objects_8 = $(am__objects_7)
@@ -295,6 +295,7 @@ GENERAL_SOURCES = \
 	fstatr.c \
 	getreent.c \
 	gettimeofdayr.c \
+	isattyr.c \
 	linkr.c \
 	lseekr.c \
 	openr.c \
@@ -449,6 +450,12 @@ lib_a-gettimeofdayr.o: gettimeofdayr.c
 lib_a-gettimeofdayr.obj: gettimeofdayr.c
 	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-gettimeofdayr.obj `if test -f 'gettimeofdayr.c'; then $(CYGPATH_W) 'gettimeofdayr.c'; else $(CYGPATH_W) '$(srcdir)/gettimeofdayr.c'; fi`
 
+lib_a-isattyr.o: isattyr.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-isattyr.o `test -f 'isattyr.c' || echo '$(srcdir)/'`isattyr.c
+
+lib_a-isattyr.obj: isattyr.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-isattyr.obj `if test -f 'isattyr.c'; then $(CYGPATH_W) 'isattyr.c'; else $(CYGPATH_W) '$(srcdir)/isattyr.c'; fi`
+
 lib_a-linkr.o: linkr.c
 	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-linkr.o `test -f 'linkr.c' || echo '$(srcdir)/'`linkr.c
 
diff --git a/newlib/libc/reent/isattyr.c b/newlib/libc/reent/isattyr.c
new file mode 100644
index 000000000..05d47d323
--- /dev/null
+++ b/newlib/libc/reent/isattyr.c
@@ -0,0 +1,63 @@
+/* Reentrant versions of isatty system call.  */
+
+#include <reent.h>
+#include <unistd.h>
+#include <_syslist.h>
+
+/* Some targets provides their own versions of these functions.  Those
+   targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS.  */
+
+#ifdef _REENT_ONLY
+#ifndef REENTRANT_SYSCALLS_PROVIDED
+#define REENTRANT_SYSCALLS_PROVIDED
+#endif
+#endif
+
+#ifdef REENTRANT_SYSCALLS_PROVIDED
+
+int _dummy_isatty_syscalls = 1;
+
+#else
+
+/* We use the errno variable used by the system dependent layer.  */
+#undef errno
+extern int errno;
+
+/*
+FUNCTION
+	<<_isatty_r>>---Reentrant version of isatty
+	
+INDEX
+	_isatty_r
+
+ANSI_SYNOPSIS
+	#include <reent.h>
+	int _isatty_r(struct _reent *<[ptr]>,
+		     int <[fd]>);
+
+TRAD_SYNOPSIS
+	#include <reent.h>
+	int _isatty_r(<[ptr]>, <[fd]>)
+	struct _reent *<[ptr]>;
+	int <[fd]>;
+
+DESCRIPTION
+	This is a reentrant version of <<isatty>>.  It
+	takes a pointer to the global data block, which holds
+	<<errno>>.
+*/
+
+int
+_isatty_r (ptr, fd)
+     struct _reent *ptr;
+     int fd;
+{
+  int ret;
+
+  errno = 0;
+  if ((ret = _isatty (fd)) == -1 && errno != 0)
+    ptr->_errno = errno;
+  return ret;
+}
+
+#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */