nds32: add support for new architecture

Add support for Andes Technology NDS32 architecture.
See here http://www.andestech.com/en/index/index.htm for more
informaton. Verification of the port from an older uClibc
port was done on a sponsored AG101p board.

The testsuite only has 5 errors, three are related to
an existing bug in dlclose() with LT.old, also happening
on cris32 and m68k.

Failures to fallocate/posix_fallocate are unresolved.

Thanks to Andes Technology sponsoring the hardware and
being very helpful while doing the uClibc-ng porting.

Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>

1 files changed, 106 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/nds32/bits/mman.h b/libc/sysdeps/linux/nds32/bits/mman.h
new file mode 100644
index 000000000..13f3e60b3
--- /dev/null
+++ b/libc/sysdeps/linux/nds32/bits/mman.h
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2016 Andes Technology, Inc.
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+/* Definitions for POSIX memory map interface.  Linux/NDS32 version.
+   Copyright (C) 1997, 2000, 2003, 2004 Free Software Foundation, Inc.
+
+   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.
+
+   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_MMAN_H
+# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
+#endif
+
+/* The following definitions basically come from the kernel headers.
+   But the kernel header is not namespace clean.  */
+
+
+/* Protections are chosen from these bits, OR'd together.  The
+   implementation does not necessarily support PROT_EXEC or PROT_WRITE
+   without PROT_READ.  The only guarantees are that no writing will be
+   allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */
+
+#define PROT_READ	0x1		/* Page can be read.  */
+#define PROT_WRITE	0x2		/* Page can be written.  */
+#define PROT_EXEC	0x4		/* Page can be executed.  */
+#define PROT_NONE	0x0		/* Page can not be accessed.  */
+#define PROT_GROWSDOWN	0x01000000	/* Extend change to start of
+					   growsdown vma (mprotect only).  */
+#define PROT_GROWSUP	0x02000000	/* Extend change to start of
+					   growsup vma (mprotect only).  */
+
+/* Sharing types (must choose one and only one of these).  */
+#define MAP_SHARED	0x01		/* Share changes.  */
+#define MAP_PRIVATE	0x02		/* Changes are private.  */
+#ifdef __USE_MISC
+# define MAP_TYPE	0x0f		/* Mask for type of mapping.  */
+#endif
+
+/* Other flags.  */
+#define MAP_FIXED	0x10		/* Interpret addr exactly.  */
+#ifdef __USE_MISC
+# define MAP_FILE	0x00
+# define MAP_ANONYMOUS	0x20		/* Don't use a file.  */
+# define MAP_ANON	MAP_ANONYMOUS
+# define MAP_RENAME	MAP_ANONYMOUS
+#endif
+
+/* These are Linux-specific.  */
+#ifdef __USE_MISC
+# define MAP_GROWSDOWN	0x0100		/* stack-like segment */
+# define MAP_DENYWRITE	0x0800		/* ETXTBSY */
+# define MAP_EXECUTABLE	0x1000		/* mark it as an executable */
+# define MAP_LOCKED	0x2000		/* pages are locked */
+# define MAP_NORESERVE  0x4000          /* don't check for reservations */
+# define MAP_POPULATE   0x08000         /* populate (prefault) pagetables */
+# define MAP_NONBLOCK   0x10000         /* do not block on IO */
+# define MAP_UNINITIALIZED 0x4000000    /* For anonymous mmap, memory could
+					   be uninitialized. */
+#endif
+
+/* Flags to `msync'.  */
+#define MS_ASYNC	1		/* Sync memory asynchronously.  */
+#define MS_INVALIDATE	2		/* Invalidate the caches.  */
+#define MS_SYNC		4		/* Synchronous memory sync.  */
+
+/* Flags for `mlockall'.  */
+#define MCL_CURRENT	1		/* Lock all currently mapped pages.  */
+#define MCL_FUTURE	2		/* Lock all additions to address
+					   space.  */
+
+/* Advice to `madvise'.  */
+#ifdef __USE_BSD
+#define MADV_NORMAL	0		/* default page-in behavior */
+#define MADV_RANDOM	1		/* page-in minimum required */
+#define MADV_SEQUENTIAL	2		/* read-ahead aggressively */
+#define MADV_WILLNEED	3		/* pre-fault pages */
+#define MADV_DONTNEED	4		/* discard these pages */
+#endif
+
+/* The POSIX people had to invent similar names for the same things.  */
+#ifdef __USE_XOPEN2K
+# define POSIX_MADV_NORMAL	0 /* No further special treatment.  */
+# define POSIX_MADV_RANDOM	1 /* Expect random page references.  */
+# define POSIX_MADV_SEQUENTIAL	2 /* Expect sequential page references.  */
+# define POSIX_MADV_WILLNEED	3 /* Will need these pages.  */
+# define POSIX_MADV_DONTNEED	4 /* Don't need these pages.  */
+#endif
+
+/* Flags for `mremap'.  */
+#ifdef __USE_GNU
+# define MREMAP_MAYMOVE	1
+#endif