Move tilegx, tilepro, and linux-generic from ports to libc.

I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy,
along with the linux-generic ports infrastructure.  Beyond the README
update, the move was just

    git mv ports/sysdeps/tile sysdeps/tile
    git mv ports/sysdeps/unix/sysv/linux/tile \
      sysdeps/unix/sysv/linux/tile
    git mv ports/sysdeps/unix/sysv/linux/generic \
      sysdeps/unix/sysv/linux/generic

I updated the relevant ChangeLogs along the lines of the ARM move
in commit c6bfe5c4d75 and tested the 64-bit tilegx build to confirm that
there were no changes in "objdump -dr" output in the shared objects.

1 files changed, 0 insertions, 151 deletions

diff --git a/ports/sysdeps/tile/tilegx/memset.c b/ports/sysdeps/tile/tilegx/memset.c
deleted file mode 100644
index d41b205a3c..0000000000
--- a/ports/sysdeps/tile/tilegx/memset.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/* Copyright (C) 2011-2014 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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 <arch/chip.h>
-#include <string.h>
-#include <stdint.h>
-#include "string-endian.h"
-
-void *
-__memset (void *s, int c, size_t n)
-{
-  uint64_t *out64;
-  int n64, to_align64;
-  uint64_t v64;
-  uint8_t *out8 = s;
-
-  /* Experimentation shows that a trivial tight loop is a win up until
-     around a size of 20, where writing a word at a time starts to win.  */
-#define BYTE_CUTOFF 20
-
-#if BYTE_CUTOFF < 7
-  /* This must be at least at least this big, or some code later
-     on doesn't work.  */
-# error "BYTE_CUTOFF is too small."
-#endif
-
-  if (n < BYTE_CUTOFF)
-    {
-      /* Strangely, this turns out to be the tightest way to write
-         this loop.  */
-      if (n != 0)
-        {
-          do
-            {
-              /* Strangely, combining these into one line performs worse.  */
-              *out8 = c;
-              out8++;
-            }
-          while (--n != 0);
-        }
-
-      return s;
-    }
-
-  /* Align 'out8'. We know n >= 7 so this won't write past the end.  */
-  while (((uintptr_t) out8 & 7) != 0)
-    {
-      *out8++ = c;
-      --n;
-    }
-
-  /* Align 'n'. */
-  while (n & 7)
-    out8[--n] = c;
-
-  out64 = (uint64_t *) out8;
-  n64 = n >> 3;
-
-  /* Tile input byte out to 64 bits. */
-  v64 = copy_byte(c);
-
-  /* This must be at least 8 or the following loop doesn't work. */
-#define CACHE_LINE_SIZE_IN_DOUBLEWORDS (CHIP_L2_LINE_SIZE() / 8)
-
-  /* Determine how many words we need to emit before the 'out32'
-     pointer becomes aligned modulo the cache line size.  */
-  to_align64 = (-((uintptr_t) out64 >> 3)) &
-    (CACHE_LINE_SIZE_IN_DOUBLEWORDS - 1);
-
-  /* Only bother aligning and using wh64 if there is at least
-     one full cache line to process.  This check also prevents
-     overrunning the end of the buffer with alignment words.  */
-  if (to_align64 <= n64 - CACHE_LINE_SIZE_IN_DOUBLEWORDS)
-    {
-      int lines_left;
-
-      /* Align out64 mod the cache line size so we can use wh64. */
-      n64 -= to_align64;
-      for (; to_align64 != 0; to_align64--)
-        {
-          *out64 = v64;
-          out64++;
-        }
-
-      /* Use unsigned divide to turn this into a right shift. */
-      lines_left = (unsigned) n64 / CACHE_LINE_SIZE_IN_DOUBLEWORDS;
-
-      do
-        {
-          /* Only wh64 a few lines at a time, so we don't exceed the
-             maximum number of victim lines.  */
-          int x = ((lines_left < CHIP_MAX_OUTSTANDING_VICTIMS ()) ? lines_left
-                   : CHIP_MAX_OUTSTANDING_VICTIMS ());
-          uint64_t *wh = out64;
-          int i = x;
-          int j;
-
-          lines_left -= x;
-
-          do
-            {
-              __insn_wh64 (wh);
-              wh += CACHE_LINE_SIZE_IN_DOUBLEWORDS;
-            }
-          while (--i);
-
-          for (j = x * (CACHE_LINE_SIZE_IN_DOUBLEWORDS / 4); j != 0; j--)
-            {
-              *out64++ = v64;
-              *out64++ = v64;
-              *out64++ = v64;
-              *out64++ = v64;
-            }
-        }
-      while (lines_left != 0);
-
-      /* We processed all full lines above, so only this many
-         words remain to be processed.  */
-      n64 &= CACHE_LINE_SIZE_IN_DOUBLEWORDS - 1;
-    }
-
-  /* Now handle any leftover values. */
-  if (n64 != 0)
-    {
-      do
-        {
-          *out64 = v64;
-          out64++;
-        }
-      while (--n64 != 0);
-    }
-
-  return s;
-}
-weak_alias (__memset, memset)
-libc_hidden_builtin_def (memset)