Move mips from ports to libc.

I've moved the MIPS port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply

git mv ports/sysdeps/mips sysdeps/mips
git mv ports/sysdeps/unix/mips sysdeps/unix/mips
git mv ports/sysdeps/unix/sysv/linux/mips sysdeps/unix/sysv/linux/mips

and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.mips similar to those in other files.

Tested that disassembly of installed shared libraries for mips is the
same before and after this patch (except for ld.so where paths in
assertions are involved, as for arm).

	* sysdeps/mips: Move directory from ports/sysdeps/mips.
	* sysdeps/unix/mips: Move directory from ports/sysdeps/unix/mips.
	* sysdeps/unix/sysv/linux/mips: Move directory from
	ports/sysdeps/unix/sysv/linux/mips.
	* README: Update listing for mips-*-linux-gnu and
	mips64-*-linux-gnu.

	* sysdeps/mips: Move directory to ../sysdeps/mips.
	* sysdeps/unix/mips: Move directory to ../sysdeps/unix/mips.
	* sysdeps/unix/sysv/linux/mips: Move directory to
	../sysdeps/unix/sysv/linux/mips.

1 files changed, 109 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c b/sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c
new file mode 100644
index 0000000..4003b6e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c
@@ -0,0 +1,109 @@
+/* Copyright (C) 2005-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <kernel_stat.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+
+#include <kernel-features.h>
+
+#include <xstatconv.h>
+
+/* Get information about the file NAME in BUF.  */
+
+int
+__fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag)
+{
+  if (__builtin_expect (vers != _STAT_VER_LINUX, 0))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  int result;
+  INTERNAL_SYSCALL_DECL (err);
+  struct kernel_stat kst;
+
+#ifdef __NR_newfstatat
+# ifndef __ASSUME_ATFCTS
+  if (__have_atfcts >= 0)
+# endif
+    {
+      result = INTERNAL_SYSCALL (newfstatat, err, 4, fd, file, &kst, flag);
+# ifndef __ASSUME_ATFCTS
+      if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1)
+	  && INTERNAL_SYSCALL_ERRNO (result, err) == ENOSYS)
+	__have_atfcts = -1;
+      else
+# endif
+	if (!__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1))
+	  return __xstat64_conv (vers, &kst, st);
+	else
+	  {
+	    __set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
+	    return -1;
+	  }
+    }
+#endif
+
+#ifndef __ASSUME_ATFCTS
+  if (flag & ~AT_SYMLINK_NOFOLLOW)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  char *buf = NULL;
+
+  if (fd != AT_FDCWD && file[0] != '/')
+    {
+      size_t filelen = strlen (file);
+      static const char procfd[] = "/proc/self/fd/%d/%s";
+      /* Buffer for the path name we are going to use.  It consists of
+	 - the string /proc/self/fd/
+	 - the file descriptor number
+	 - the file name provided.
+	 The final NUL is included in the sizeof.   A bit of overhead
+	 due to the format elements compensates for possible negative
+	 numbers.  */
+      size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen;
+      buf = alloca (buflen);
+
+      __snprintf (buf, buflen, procfd, fd, file);
+      file = buf;
+    }
+
+  if (flag & AT_SYMLINK_NOFOLLOW)
+    result = INTERNAL_SYSCALL (lstat, err, 2, file, &kst);
+  else
+    result = INTERNAL_SYSCALL (stat, err, 2, file, &kst);
+
+  if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
+    return __xstat64_conv (vers, &kst, st);
+
+  __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
+  return -1;
+#endif
+}
+libc_hidden_def (__fxstatat64)