Merge branch 'elf-move'

Conflicts:
	debug/backtracesymsfd.c
	sysdeps/generic/elf/backtracesymsfd.c
	sysdeps/i386/configure.in

18 files changed, 572 insertions, 862 deletions

diff --git a/sysdeps/generic/elf/backtracesyms.c b/sysdeps/generic/elf/backtracesyms.c
deleted file mode 100644
index d75ce0a321..0000000000
--- a/sysdeps/generic/elf/backtracesyms.c
+++ /dev/null
@@ -1,122 +0,0 @@
-/* Return list with names for address in backtrace.
-   Copyright (C) 1998,1999,2000,2001,2003,2009 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
-
-   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 <assert.h>
-#include <execinfo.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <ldsodefs.h>
-
-#if __ELF_NATIVE_CLASS == 32
-# define WORD_WIDTH 8
-#else
-/* We assyme 64bits.  */
-# define WORD_WIDTH 16
-#endif
-
-
-char **
-__backtrace_symbols (array, size)
-     void *const *array;
-     int size;
-{
-  Dl_info info[size];
-  int status[size];
-  int cnt;
-  size_t total = 0;
-  char **result;
-
-  /* Fill in the information we can get from `dladdr'.  */
-  for (cnt = 0; cnt < size; ++cnt)
-    {
-      struct link_map *map;
-      status[cnt] = _dl_addr (array[cnt], &info[cnt], &map, NULL);
-      if (status[cnt] && info[cnt].dli_fname && info[cnt].dli_fname[0] != '\0')
-	{
-	  /* We have some info, compute the length of the string which will be
-	     "<file-name>(<sym-name>+offset) [address].  */
-	  total += (strlen (info[cnt].dli_fname ?: "")
-		    + strlen (info[cnt].dli_sname ?: "")
-		    + 3 + WORD_WIDTH + 3 + WORD_WIDTH + 5);
-
-	  /* The load bias is more useful to the user than the load
-	     address.  The use of these addresses is to calculate an
-	     address in the ELF file, so its prelinked bias is not
-	     something we want to subtract out.  */
-	  info[cnt].dli_fbase = (void *) map->l_addr;
-	}
-      else
-	total += 5 + WORD_WIDTH;
-    }
-
-  /* Allocate memory for the result.  */
-  result = (char **) malloc (size * sizeof (char *) + total);
-  if (result != NULL)
-    {
-      char *last = (char *) (result + size);
-
-      for (cnt = 0; cnt < size; ++cnt)
-	{
-	  result[cnt] = last;
-
-	  if (status[cnt]
-	      && info[cnt].dli_fname != NULL && info[cnt].dli_fname[0] != '\0')
-	    {
-	      if (info[cnt].dli_sname == NULL)
-		/* We found no symbol name to use, so describe it as
-		   relative to the file.  */
-		info[cnt].dli_saddr = info[cnt].dli_fbase;
-
-	      if (info[cnt].dli_sname == NULL && info[cnt].dli_saddr == 0)
-		last += 1 + sprintf (last, "%s(%s) [%p]",
-				     info[cnt].dli_fname ?: "",
-				     info[cnt].dli_sname ?: "",
-				     array[cnt]);
-	      else
-		{
-		  char sign;
-		  ptrdiff_t offset;
-		  if (array[cnt] >= (void *) info[cnt].dli_saddr)
-		    {
-		      sign = '+';
-		      offset = array[cnt] - info[cnt].dli_saddr;
-		    }
-		  else
-		    {
-		      sign = '-';
-		      offset = info[cnt].dli_saddr - array[cnt];
-		    }
-
-		  last += 1 + sprintf (last, "%s(%s%c%#tx) [%p]",
-				       info[cnt].dli_fname ?: "",
-				       info[cnt].dli_sname ?: "",
-				       sign, offset, array[cnt]);
-		}
-	    }
-	  else
-	    last += 1 + sprintf (last, "[%p]", array[cnt]);
-	}
-      assert (last <= (char *) result + size * sizeof (char *) + total);
-    }
-
-  return result;
-}
-weak_alias (__backtrace_symbols, backtrace_symbols)
diff --git a/sysdeps/generic/elf/backtracesymsfd.c b/sysdeps/generic/elf/backtracesymsfd.c
deleted file mode 100644
index 3562c50a78..0000000000
--- a/sysdeps/generic/elf/backtracesymsfd.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/* Write formatted list with names for addresses in backtrace to a file.
-   Copyright (C) 1998,2000,2003,2005,2009,2011 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
-
-   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 <execinfo.h>
-#include <string.h>
-#include <sys/uio.h>
-
-#include <_itoa.h>
-#include <ldsodefs.h>
-
-#if __ELF_NATIVE_CLASS == 32
-# define WORD_WIDTH 8
-#else
-/* We assume 64bits.  */
-# define WORD_WIDTH 16
-#endif
-
-
-void
-__backtrace_symbols_fd (array, size, fd)
-     void *const *array;
-     int size;
-     int fd;
-{
-  struct iovec iov[9];
-  int cnt;
-
-  for (cnt = 0; cnt < size; ++cnt)
-    {
-      char buf[WORD_WIDTH];
-      char buf2[WORD_WIDTH];
-      Dl_info info;
-      struct link_map *map;
-      size_t last = 0;
-
-      if (_dl_addr (array[cnt], &info, &map, NULL)
-	  && info.dli_fname != NULL && info.dli_fname[0] != '\0')
-	{
-	  /* Name of the file.  */
-	  iov[0].iov_base = (void *) info.dli_fname;
-	  iov[0].iov_len = strlen (info.dli_fname);
-	  last = 1;
-
-	  if (info.dli_sname != NULL || map->l_addr != 0)
-	    {
-	      size_t diff;
-
-	      iov[last].iov_base = (void *) "(";
-	      iov[last].iov_len = 1;
-	      ++last;
-
-	      if (info.dli_sname != NULL)
-		{
-		  /* We have a symbol name.  */
-		  iov[last].iov_base = (void *) info.dli_sname;
-		  iov[last].iov_len = strlen (info.dli_sname);
-		  ++last;
-		}
-	      else
-		/* We have no symbol, so describe it as relative to the file.
-		   The load bias is more useful to the user than the load
-		   address.  The use of these addresses is to calculate an
-		   address in the ELF file, so its prelinked bias is not
-		   something we want to subtract out.  */
-		info.dli_saddr = (void *) map->l_addr;
-
-	      if (array[cnt] >= (void *) info.dli_saddr)
-		{
-		  iov[last].iov_base = (void *) "+0x";
-		  diff = array[cnt] - info.dli_saddr;
-		}
-	      else
-		{
-		  iov[last].iov_base = (void *) "-0x";
-		  diff = info.dli_saddr - array[cnt];
-		}
-	      iov[last].iov_len = 3;
-	      ++last;
-
-	      iov[last].iov_base = _itoa_word ((unsigned long int) diff,
-					       &buf2[WORD_WIDTH], 16, 0);
-	      iov[last].iov_len = (&buf2[WORD_WIDTH]
-				   - (char *) iov[last].iov_base);
-	      ++last;
-
-	      iov[last].iov_base = (void *) ")";
-	      iov[last].iov_len = 1;
-	      ++last;
-	    }
-	}
-
-      iov[last].iov_base = (void *) "[0x";
-      iov[last].iov_len = 3;
-      ++last;
-
-      iov[last].iov_base = _itoa_word ((unsigned long int) array[cnt],
-				       &buf[WORD_WIDTH], 16, 0);
-      iov[last].iov_len = &buf[WORD_WIDTH] - (char *) iov[last].iov_base;
-      ++last;
-
-      iov[last].iov_base = (void *) "]\n";
-      iov[last].iov_len = 2;
-      ++last;
-
-      __writev (fd, iov, last);
-    }
-}
-weak_alias (__backtrace_symbols_fd, backtrace_symbols_fd)
-libc_hidden_def (__backtrace_symbols_fd)
diff --git a/sysdeps/generic/elf/ifunc-sel.h b/sysdeps/generic/ifunc-sel.h
index 6a27b69c5b..6a27b69c5b 100644
--- a/sysdeps/generic/elf/ifunc-sel.h
+++ b/sysdeps/generic/ifunc-sel.h
diff --git a/sysdeps/i386/Versions b/sysdeps/i386/Versions
index b0230d31cf..7be44aad7a 100644
--- a/sysdeps/i386/Versions
+++ b/sysdeps/i386/Versions
@@ -1,3 +1,9 @@
+ld {
+  GLIBC_2.3 {
+    # The alternative i386 runtime interface to TLS.
+    ___tls_get_addr;
+  }
+}
 libc {
   GLIBC_2.0 {
     # Functions from libgcc.
diff --git a/sysdeps/i386/configure b/sysdeps/i386/configure
index baa66096a6..e60b4982e4 100644
--- a/sysdeps/i386/configure
+++ b/sysdeps/i386/configure
@@ -348,3 +348,47 @@ fi
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_novzeroupper" >&5
 $as_echo "$libc_cv_cc_novzeroupper" >&6; }
+
+# Check for support of thread-local storage handling in assembler and
+# linker.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for i386 TLS support" >&5
+$as_echo_n "checking for i386 TLS support... " >&6; }
+if ${libc_cv_386_tls+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.s <<\EOF
+	.section ".tdata", "awT", @progbits
+	.globl foo
+foo:	.long	1
+	.section ".tbss", "awT", @nobits
+	.globl bar
+bar:	.skip	4
+	.text
+baz:	leal	bar@TLSLDM(%ebx), %eax
+	leal	bar@DTPOFF(%eax), %edx
+	subl	foo@GOTTPOFF(%edx), %eax
+	subl	$bar@TPOFF, %eax
+	movl	foo@GOTNTPOFF(%edx), %ecx
+	movl	%gs:(%ecx), %eax
+	movl	%gs:bar@NTPOFF, %eax
+EOF
+if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+  libc_cv_386_tls=yes
+else
+  libc_cv_386_tls=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_386_tls" >&5
+$as_echo "$libc_cv_386_tls" >&6; }
+if test $libc_cv_386_tls = no; then
+  as_fn_error $? "the assembler must support TLS" "$LINENO" 5
+fi
+
+$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
+
diff --git a/sysdeps/i386/configure.in b/sysdeps/i386/configure.in
index 7b4879d54a..b9e6f9eef4 100644
--- a/sysdeps/i386/configure.in
+++ b/sysdeps/i386/configure.in
@@ -85,3 +85,37 @@ LIBC_TRY_CC_OPTION([-mno-vzeroupper],
 		   [libc_cv_cc_novzeroupper=yes],
 		   [libc_cv_cc_novzeroupper=no])
 ])
+
+# Check for support of thread-local storage handling in assembler and
+# linker.
+AC_CACHE_CHECK(for i386 TLS support, libc_cv_386_tls, [dnl
+cat > conftest.s <<\EOF
+	.section ".tdata", "awT", @progbits
+	.globl foo
+foo:	.long	1
+	.section ".tbss", "awT", @nobits
+	.globl bar
+bar:	.skip	4
+	.text
+baz:	leal	bar@TLSLDM(%ebx), %eax
+	leal	bar@DTPOFF(%eax), %edx
+	subl	foo@GOTTPOFF(%edx), %eax
+	subl	$bar@TPOFF, %eax
+	movl	foo@GOTNTPOFF(%edx), %ecx
+	movl	%gs:(%ecx), %eax
+	movl	%gs:bar@NTPOFF, %eax
+EOF
+dnl
+if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
+  libc_cv_386_tls=yes
+else
+  libc_cv_386_tls=no
+fi
+rm -f conftest*])
+if test $libc_cv_386_tls = no; then
+  AC_MSG_ERROR([the assembler must support TLS])
+fi
+
+dnl It is always possible to access static and hidden symbols in an
+dnl position independent way.
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
diff --git a/sysdeps/i386/elf/Versions b/sysdeps/i386/elf/Versions
deleted file mode 100644
index 5ca6686b83..0000000000
--- a/sysdeps/i386/elf/Versions
+++ /dev/null
@@ -1,6 +0,0 @@
-ld {
-  GLIBC_2.3 {
-    # The alternative i386 runtime interface to TLS.
-    ___tls_get_addr;
-  }
-}
diff --git a/sysdeps/i386/elf/configure b/sysdeps/i386/elf/configure
deleted file mode 100644
index 83e89bd0a0..0000000000
--- a/sysdeps/i386/elf/configure
+++ /dev/null
@@ -1,128 +0,0 @@
-
-# as_fn_set_status STATUS
-# -----------------------
-# Set $? to STATUS, without forking.
-as_fn_set_status ()
-{
-  return $1
-} # as_fn_set_status
-
-# as_fn_exit STATUS
-# -----------------
-# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
-as_fn_exit ()
-{
-  set +e
-  as_fn_set_status $1
-  exit $1
-} # as_fn_exit
-if expr a : '\(a\)' >/dev/null 2>&1 &&
-   test "X`expr 00001 : '.*\(...\)'`" = X001; then
-  as_expr=expr
-else
-  as_expr=false
-fi
-
-if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
-  as_basename=basename
-else
-  as_basename=false
-fi
-
-as_me=`$as_basename -- "$0" ||
-$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
-	 X"$0" : 'X\(//\)$' \| \
-	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X/"$0" |
-    sed '/^.*\/\([^/][^/]*\)\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\/\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\/\(\/\).*/{
-	    s//\1/
-	    q
-	  }
-	  s/.*/./; q'`
-
-
-  as_lineno_1=$LINENO as_lineno_1a=$LINENO
-  as_lineno_2=$LINENO as_lineno_2a=$LINENO
-  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
-  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
-  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
-  sed -n '
-    p
-    /[$]LINENO/=
-  ' <$as_myself |
-    sed '
-      s/[$]LINENO.*/&-/
-      t lineno
-      b
-      :lineno
-      N
-      :loop
-      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
-      t loop
-      s/-\n.*//
-    ' >$as_me.lineno &&
-  chmod +x "$as_me.lineno" ||
-    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
-
-  # Don't try to exec as it changes $[0], causing all sort of problems
-  # (the dirname of $[0] is not the place where we might find the
-  # original and so on.  Autoconf is especially sensitive to this).
-  . "./$as_me.lineno"
-  # Exit status is that of the last command.
-  exit
-}
-
-# This file is generated from configure.in by Autoconf.  DO NOT EDIT!
- # Local configure fragment for sysdeps/i386/elf.
-
-# Check for support of thread-local storage handling in assembler and
-# linker.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for i386 TLS support" >&5
-$as_echo_n "checking for i386 TLS support... " >&6; }
-if ${libc_cv_386_tls+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.s <<\EOF
-	.section ".tdata", "awT", @progbits
-	.globl foo
-foo:	.long	1
-	.section ".tbss", "awT", @nobits
-	.globl bar
-bar:	.skip	4
-	.text
-baz:	leal	bar@TLSLDM(%ebx), %eax
-	leal	bar@DTPOFF(%eax), %edx
-	subl	foo@GOTTPOFF(%edx), %eax
-	subl	$bar@TPOFF, %eax
-	movl	foo@GOTNTPOFF(%edx), %ecx
-	movl	%gs:(%ecx), %eax
-	movl	%gs:bar@NTPOFF, %eax
-EOF
-if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'
-  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; }; then
-  libc_cv_386_tls=yes
-else
-  libc_cv_386_tls=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_386_tls" >&5
-$as_echo "$libc_cv_386_tls" >&6; }
-if test $libc_cv_386_tls = no; then
-  as_fn_error $? "the assembler must support TLS" "$LINENO" 5
-fi
-
-$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
-
diff --git a/sysdeps/i386/elf/configure.in b/sysdeps/i386/elf/configure.in
deleted file mode 100644
index 0c436f3f41..0000000000
--- a/sysdeps/i386/elf/configure.in
+++ /dev/null
@@ -1,36 +0,0 @@
-GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
-# Local configure fragment for sysdeps/i386/elf.
-
-# Check for support of thread-local storage handling in assembler and
-# linker.
-AC_CACHE_CHECK(for i386 TLS support, libc_cv_386_tls, [dnl
-cat > conftest.s <<\EOF
-	.section ".tdata", "awT", @progbits
-	.globl foo
-foo:	.long	1
-	.section ".tbss", "awT", @nobits
-	.globl bar
-bar:	.skip	4
-	.text
-baz:	leal	bar@TLSLDM(%ebx), %eax
-	leal	bar@DTPOFF(%eax), %edx
-	subl	foo@GOTTPOFF(%edx), %eax
-	subl	$bar@TPOFF, %eax
-	movl	foo@GOTNTPOFF(%edx), %ecx
-	movl	%gs:(%ecx), %eax
-	movl	%gs:bar@NTPOFF, %eax
-EOF
-dnl
-if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
-  libc_cv_386_tls=yes
-else
-  libc_cv_386_tls=no
-fi
-rm -f conftest*])
-if test $libc_cv_386_tls = no; then
-  AC_MSG_ERROR([the assembler must support TLS])
-fi
-
-dnl It is always possible to access static and hidden symbols in an
-dnl position independent way.
-AC_DEFINE(PI_STATIC_AND_HIDDEN)
diff --git a/sysdeps/i386/elf/start.S b/sysdeps/i386/start.S
index 992c358c07..990f3715d5 100644
--- a/sysdeps/i386/elf/start.S
+++ b/sysdeps/i386/start.S
@@ -1,6 +1,5 @@
 /* Startup code compliant to the ELF i386 ABI.
-   Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004
-   Free Software Foundation, Inc.
+   Copyright (C) 1995-2012 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
diff --git a/sysdeps/unix/i386/start.c b/sysdeps/unix/i386/start.c
deleted file mode 100644
index e6c89ee3f3..0000000000
--- a/sysdeps/unix/i386/start.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define	DUMMIES	dummy0
-#include <sysdeps/unix/start.c>
diff --git a/sysdeps/unix/sparc/start.c b/sysdeps/unix/sparc/start.c
deleted file mode 100644
index 86fb8bb0a5..0000000000
--- a/sysdeps/unix/sparc/start.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/* Copyright (C) 1991-1997,2004,2012 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.
-
-   In addition to the permissions in the GNU Lesser General Public
-   License, the Free Software Foundation gives you unlimited
-   permission to link the compiled version of this file with other
-   programs, and to distribute those programs without any restriction
-   coming from the use of this file. (The GNU Lesser General Public
-   License restrictions do apply in other respects; for example, they
-   cover modification of the file, and distribution when not linked
-   into another program.)
-
-   Note that people who make modified versions of this file are not
-   obligated to grant this special exception for their modified
-   versions; it is their choice whether to do so. The GNU Lesser
-   General Public License gives permission to release a modified
-   version without this exception; this exception also makes it
-   possible to release a modified version which carries forward this
-   exception.
-
-   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 <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-#ifndef NO_SHLIB
-#include <sys/exec.h>
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <link.h>
-#include <syscall.h>
-#endif
-
-#if !defined (__GNUC__) || __GNUC__ < 2
-  #error This file uses GNU C extensions; you must compile with GCC version 2.
-#endif
-
-/* The first piece of initialized data.  */
-int __data_start = 0;
-weak_alias (__data_start, data_start)
-
-extern void __libc_init (int argc, char **argv, char **envp) __THROW;
-extern int main (int argc, char **argv, char **envp) __THROW;
-
-register long int sp asm("%sp"), fp asm("%fp");
-
-#ifndef NO_SHLIB
-static void init_shlib (void) __THROW;
-#endif
-
-#ifndef NO_EXPLICIT_START
-/* Declare _start with an explicit assembly symbol name of `start'
-   (note no leading underscore).  This is the name Sun's crt0.o uses,
-   and programs are often linked with `ld -e start'.  */
-void _start (void) asm ("start");
-#endif
-
-void
-_start (void)
-{
-  /* It is important that these be declared `register'.
-     Otherwise, when compiled without optimization, they are put on the
-     stack, which loses completely after we zero the FP.  */
-  register int argc;
-  register char **argv, **envp;
-
-  /* Unwind the frame built when we entered the function.  */
-  asm("restore");
-
-  /* And clear the frame pointer.  */
-  fp = 0;
-
-  /* The argument info starts after one register
-     window (64 bytes) past the SP.  */
-  argc = ((int *) sp)[16];
-  argv = (char **) &((int *) sp)[17];
-  envp = &argv[argc + 1];
-  __environ = envp;
-
-#ifndef NO_SHLIB
-  init_shlib ();
-#endif
-
-  /* Allocate 24 bytes of stack space for the register save area.  */
-  sp -= 24;
-  __libc_init (argc, argv, envp);
-
-  exit (main (argc, argv, envp));
-}
-
-#ifndef NO_SHLIB
-
-/* System calls for use by the bootstrap routine.
-   These are defined here since the usual calls may be dynamically linked.  */
-
-int syscall (int sysno, ...) asm ("init_syscall");
-asm ("init_syscall:\n"
-     "	clr %g1\n"
-     "	ta 0\n"
-     "	bcc 1f\n"
-     "	sethi %hi(_errno), %g1\n"
-     "	st %o0, [%g1 + %lo(_errno)]\n"
-     "	sub %g0, 1, %o0\n"
-     "1:retl\n"
-     "	nop");
-
-static void
-init_shlib ()
-{
-  extern struct link_dynamic _DYNAMIC;
-  int so, zf;
-  caddr_t somap;
-  caddr_t sodmap;
-  caddr_t sobssmap;
-  void (*ldstart) (int, int);
-  struct exec soexec;
-  struct
-    {
-      caddr_t crt_ba;
-      int crt_dzfd;
-      int crt_ldfd;
-      struct link_dynamic *crt_dp;
-      char **crt_ep;
-      caddr_t crt_bp;
-    } soarg;
-
-  /* If not dynamically linked, do nothing.  */
-  if (&_DYNAMIC == 0)
-    return;
-
-  /* Map in the dynamic linker.  */
-  so = syscall (SYS_open, "/usr/lib/ld.so", O_RDONLY);
-  if (syscall (SYS_read, so, &soexec, sizeof (soexec)) != sizeof (soexec)
-      || soexec.a_magic != ZMAGIC)
-    {
-      static const char emsg[] = "crt0: no /usr/lib/ld.so\n";
-
-      syscall (SYS_write, 2, emsg, sizeof (emsg) - 1);
-      syscall (SYS_exit, 127);
-    }
-  somap = (caddr_t) syscall (SYS_mmap, 0,
-			     soexec.a_text + soexec.a_data + soexec.a_bss,
-			     PROT_READ | PROT_EXEC, _MAP_NEW | MAP_PRIVATE,
-			     so, 0);
-  sodmap = (caddr_t) syscall (SYS_mmap, somap + soexec.a_text, soexec.a_data,
-			      PROT_READ | PROT_WRITE | PROT_EXEC,
-			      _MAP_NEW | MAP_FIXED | MAP_PRIVATE,
-			      so, soexec.a_text);
-  zf = syscall (SYS_open, "/dev/zero", O_RDONLY);
-  if (soexec.a_bss != 0)
-    sobssmap = (caddr_t) syscall (SYS_mmap,
-				  somap + soexec.a_text + soexec.a_data,
-				  soexec.a_bss,
-				  PROT_READ | PROT_WRITE | PROT_EXEC,
-				  _MAP_NEW | MAP_FIXED | MAP_PRIVATE,
-				  zf, 0);
-
-  /* Call the entry point of the dynamic linker.  */
-  soarg.crt_ba = somap;
-  soarg.crt_dzfd = zf;
-  soarg.crt_ldfd = so;
-  soarg.crt_dp = &_DYNAMIC;
-  soarg.crt_ep = __environ;
-  soarg.crt_bp = (caddr_t) &&retaddr;
-
-  ldstart = (__typeof (ldstart)) (somap + soexec.a_entry);
-  (*ldstart) (1, (char *) &soarg - (char *) sp);
-
- retaddr:
-}
-
-#endif
diff --git a/sysdeps/unix/start.c b/sysdeps/unix/start.c
deleted file mode 100644
index ecedc55119..0000000000
--- a/sysdeps/unix/start.c
+++ /dev/null
@@ -1,95 +0,0 @@
-/* Copyright (C) 1991, 93, 1995-1998, 2000, 2012 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.
-
-   In addition to the permissions in the GNU Lesser General Public
-   License, the Free Software Foundation gives you unlimited
-   permission to link the compiled version of this file with other
-   programs, and to distribute those programs without any restriction
-   coming from the use of this file. (The GNU Lesser General Public
-   License restrictions do apply in other respects; for example, they
-   cover modification of the file, and distribution when not linked
-   into another program.)
-
-   Note that people who make modified versions of this file are not
-   obligated to grant this special exception for their modified
-   versions; it is their choice whether to do so. The GNU Lesser
-   General Public License gives permission to release a modified
-   version without this exception; this exception also makes it
-   possible to release a modified version which carries forward this
-   exception.
-
-   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 <stdlib.h>
-#include <unistd.h>
-#include <sysdep.h>		/* In case it wants to define anything.  */
-
-/* The first piece of initialized data.  */
-int __data_start = 0;
-weak_alias (__data_start, data_start)
-
-#ifdef	DUMMIES
-#define	ARG_DUMMIES	DUMMIES,
-#define	DECL_DUMMIES	int DUMMIES;
-#else
-#define	ARG_DUMMIES
-#define	DECL_DUMMIES
-#endif
-
-extern void __libc_init (int argc, char **argv, char **envp);
-extern int main (int argc, char **argv, char **envp);
-
-
-/* Not a prototype because it gets called strangely.  */
-static void start1();
-
-#ifndef	HAVE__start
-
-/* N.B.: It is important that this be the first function.
-   This file is the first thing in the text section.  */
-void
-_start ()
-{
-  start1 ();
-}
-
-#endif
-
-/* ARGSUSED */
-static void
-start1 (ARG_DUMMIES argc, argp)
-     DECL_DUMMIES
-     int argc;
-     char *argp;
-{
-  char **argv = &argp;
-
-  /* The environment starts just after ARGV.  */
-  __environ = &argv[argc + 1];
-
-  /* If the first thing after ARGV is the arguments
-     themselves, there is no environment.  */
-  if ((char *) __environ == *argv)
-    /* The environment is empty.  Make __environ
-       point at ARGV[ARGC], which is NULL.  */
-    --__environ;
-
-  /* Do C library initializations.  */
-  __libc_init (argc, argv, __environ);
-
-  /* Call the user program.  */
-  exit (main (argc, argv, __environ));
-}
diff --git a/sysdeps/x86_64/configure b/sysdeps/x86_64/configure
index bd699bbccb..8b1a4de1d4 100644
--- a/sysdeps/x86_64/configure
+++ b/sysdeps/x86_64/configure
@@ -1,3 +1,366 @@
-# The i386 fragment also works for x86_64.
 
-. $srcdir/sysdeps/i386/configure
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_compile
+# This file is generated from configure.in by Autoconf.  DO NOT EDIT!
+ # Local configure fragment for sysdeps/x86_64.
+
+
+ac_fn_c_check_header_compile "$LINENO" "cpuid.h" "ac_cv_header_cpuid_h" "/* No default includes.  */
+"
+if test "x$ac_cv_header_cpuid_h" = xyes; then :
+
+else
+  as_fn_error $? "gcc must provide the <cpuid.h> header" "$LINENO" 5
+fi
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if -g produces usable source locations for assembler-with-cpp" >&5
+$as_echo_n "checking if -g produces usable source locations for assembler-with-cpp... " >&6; }
+if ${libc_cv_cpp_asm_debuginfo+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.S <<EOF
+#include "confdefs.h"
+
+/* comment on
+   two lines */
+	${libc_cv_dot_text}
+	${libc_cv_asm_global_directive} foo
+foo:
+	/* Unfortunately this test only works for a real instruction,
+	   not for any of the machine-independent pseudo-ops.
+	   So we just have to assume everybody has a "nop".  */
+	nop
+	/* comment */
+	nop
+	/* comment */
+	nop
+EOF
+if { ac_try='${CC-cc} $CPPFLAGS $ASFLAGS -g -c conftest.S 1>&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; } && {
+   ac_pattern='conftest\.S'
+   { ac_try='readelf --debug-dump=line conftest.o |
+		   grep $ac_pattern 1>&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }
+  }; then
+  libc_cv_cpp_asm_debuginfo=yes
+else
+  libc_cv_cpp_asm_debuginfo=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cpp_asm_debuginfo" >&5
+$as_echo "$libc_cv_cpp_asm_debuginfo" >&6; }
+if test $libc_cv_cpp_asm_debuginfo = yes; then
+  $as_echo "#define HAVE_CPP_ASM_DEBUGINFO 1" >>confdefs.h
+
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for SSE4 support" >&5
+$as_echo_n "checking for SSE4 support... " >&6; }
+if ${libc_cv_cc_sse4+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} -msse4 -xc /dev/null -S -o /dev/null'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+  libc_cv_cc_sse4=yes
+else
+  libc_cv_cc_sse4=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_sse4" >&5
+$as_echo "$libc_cv_cc_sse4" >&6; }
+if test $libc_cv_cc_sse4 = yes; then
+  $as_echo "#define HAVE_SSE4_SUPPORT 1" >>confdefs.h
+
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX support" >&5
+$as_echo_n "checking for AVX support... " >&6; }
+if ${libc_cv_cc_avx+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} -mavx -xc /dev/null -S -o /dev/null'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+  libc_cv_cc_avx=yes
+else
+  libc_cv_cc_avx=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_avx" >&5
+$as_echo "$libc_cv_cc_avx" >&6; }
+if test $libc_cv_cc_avx = yes; then
+  $as_echo "#define HAVE_AVX_SUPPORT 1" >>confdefs.h
+
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX encoding of SSE instructions" >&5
+$as_echo_n "checking for AVX encoding of SSE instructions... " >&6; }
+if ${libc_cv_cc_sse2avx+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} -msse2avx -xc /dev/null -S -o /dev/null'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+  libc_cv_cc_sse2avx=yes
+else
+  libc_cv_cc_sse2avx=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_sse2avx" >&5
+$as_echo "$libc_cv_cc_sse2avx" >&6; }
+if test $libc_cv_cc_sse2avx = yes; then
+  $as_echo "#define HAVE_SSE2AVX_SUPPORT 1" >>confdefs.h
+
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for FMA4 support" >&5
+$as_echo_n "checking for FMA4 support... " >&6; }
+if ${libc_cv_cc_fma4+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} -mfma4 -xc /dev/null -S -o /dev/null'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+  libc_cv_cc_fma4=yes
+else
+  libc_cv_cc_fma4=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_fma4" >&5
+$as_echo "$libc_cv_cc_fma4" >&6; }
+if test $libc_cv_cc_fma4 = yes; then
+  $as_echo "#define HAVE_FMA4_SUPPORT 1" >>confdefs.h
+
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -mno-vzeroupper support" >&5
+$as_echo_n "checking for -mno-vzeroupper support... " >&6; }
+if ${libc_cv_cc_novzeroupper+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} -mno-vzeroupper -xc /dev/null -S -o /dev/null'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+  libc_cv_cc_novzeroupper=yes
+else
+  libc_cv_cc_novzeroupper=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_novzeroupper" >&5
+$as_echo "$libc_cv_cc_novzeroupper" >&6; }
+
+# Check for support of thread-local storage handling in assembler and linker.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for x86-64 TLS support" >&5
+$as_echo_n "checking for x86-64 TLS support... " >&6; }
+if ${libc_cv_x86_64_tls+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.s <<\EOF
+	.section ".tdata", "awT", @progbits
+	.globl foo
+foo:	.quad	1
+	.section ".tbss", "awT", @nobits
+	.globl bar
+bar:	.skip	8
+	.text
+baz:	leaq	bar@TLSLD(%rip), %rdi
+	leaq	bar@DTPOFF(%rax), %rcx
+	addq	foo@GOTTPOFF(%rip), %rax
+	movq	$bar@TPOFF, %rdx
+EOF
+if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+  libc_cv_x86_64_tls=yes
+else
+  libc_cv_x86_64_tls=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_x86_64_tls" >&5
+$as_echo "$libc_cv_x86_64_tls" >&6; }
+if test $libc_cv_x86_64_tls = no; then
+  as_fn_error $? "the assembler must support TLS" "$LINENO" 5
+fi
+
+$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
+
+# work around problem with autoconf and empty lines at the end of files
diff --git a/sysdeps/x86_64/configure.in b/sysdeps/x86_64/configure.in
new file mode 100644
index 0000000000..f913c7c980
--- /dev/null
+++ b/sysdeps/x86_64/configure.in
@@ -0,0 +1,122 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/x86_64.
+
+AC_CHECK_HEADER([cpuid.h], ,
+  [AC_MSG_ERROR([gcc must provide the <cpuid.h> header])],
+  [/* No default includes.  */])
+
+AC_CACHE_CHECK(if -g produces usable source locations for assembler-with-cpp,
+	       libc_cv_cpp_asm_debuginfo, [dnl
+cat > conftest.S <<EOF
+#include "confdefs.h"
+
+/* comment on
+   two lines */
+	${libc_cv_dot_text}
+	${libc_cv_asm_global_directive} foo
+foo:
+	/* Unfortunately this test only works for a real instruction,
+	   not for any of the machine-independent pseudo-ops.
+	   So we just have to assume everybody has a "nop".  */
+	nop
+	/* comment */
+	nop
+	/* comment */
+	nop
+EOF
+if AC_TRY_COMMAND([${CC-cc} $CPPFLAGS $ASFLAGS -g -c conftest.S 1>&AS_MESSAGE_LOG_FD]) && {
+   ac_pattern='conftest\.S'
+   AC_TRY_COMMAND([readelf --debug-dump=line conftest.o |
+		   grep $ac_pattern 1>&AS_MESSAGE_LOG_FD])
+  }; then
+  libc_cv_cpp_asm_debuginfo=yes
+else
+  libc_cv_cpp_asm_debuginfo=no
+fi
+rm -f conftest*])AC_SUBST(libc_cv_cpp_asm_debuginfo)
+if test $libc_cv_cpp_asm_debuginfo = yes; then
+  AC_DEFINE(HAVE_CPP_ASM_DEBUGINFO)
+fi
+
+dnl Check if -msse4 works.
+AC_CACHE_CHECK(for SSE4 support, libc_cv_cc_sse4, [dnl
+if AC_TRY_COMMAND([${CC-cc} -msse4 -xc /dev/null -S -o /dev/null]); then
+  libc_cv_cc_sse4=yes
+else
+  libc_cv_cc_sse4=no
+fi])
+if test $libc_cv_cc_sse4 = yes; then
+  AC_DEFINE(HAVE_SSE4_SUPPORT)
+fi
+
+dnl Check if -mavx works.
+AC_CACHE_CHECK(for AVX support, libc_cv_cc_avx, [dnl
+if AC_TRY_COMMAND([${CC-cc} -mavx -xc /dev/null -S -o /dev/null]); then
+  libc_cv_cc_avx=yes
+else
+  libc_cv_cc_avx=no
+fi])
+if test $libc_cv_cc_avx = yes; then
+  AC_DEFINE(HAVE_AVX_SUPPORT)
+fi
+
+dnl Check if -msse2avx works.
+AC_CACHE_CHECK(for AVX encoding of SSE instructions, libc_cv_cc_sse2avx, [dnl
+if AC_TRY_COMMAND([${CC-cc} -msse2avx -xc /dev/null -S -o /dev/null]); then
+  libc_cv_cc_sse2avx=yes
+else
+  libc_cv_cc_sse2avx=no
+fi])
+if test $libc_cv_cc_sse2avx = yes; then
+  AC_DEFINE(HAVE_SSE2AVX_SUPPORT)
+fi
+
+dnl Check if -mfma4 works.
+AC_CACHE_CHECK(for FMA4 support, libc_cv_cc_fma4, [dnl
+if AC_TRY_COMMAND([${CC-cc} -mfma4 -xc /dev/null -S -o /dev/null]); then
+  libc_cv_cc_fma4=yes
+else
+  libc_cv_cc_fma4=no
+fi])
+if test $libc_cv_cc_fma4 = yes; then
+  AC_DEFINE(HAVE_FMA4_SUPPORT)
+fi
+
+dnl Check if -mno-vzeroupper works.
+AC_CACHE_CHECK(for -mno-vzeroupper support, libc_cv_cc_novzeroupper, [dnl
+if AC_TRY_COMMAND([${CC-cc} -mno-vzeroupper -xc /dev/null -S -o /dev/null]); then
+  libc_cv_cc_novzeroupper=yes
+else
+  libc_cv_cc_novzeroupper=no
+fi])
+
+# Check for support of thread-local storage handling in assembler and linker.
+AC_CACHE_CHECK(for x86-64 TLS support, libc_cv_x86_64_tls, [dnl
+cat > conftest.s <<\EOF
+	.section ".tdata", "awT", @progbits
+	.globl foo
+foo:	.quad	1
+	.section ".tbss", "awT", @nobits
+	.globl bar
+bar:	.skip	8
+	.text
+baz:	leaq	bar@TLSLD(%rip), %rdi
+	leaq	bar@DTPOFF(%rax), %rcx
+	addq	foo@GOTTPOFF(%rip), %rax
+	movq	$bar@TPOFF, %rdx
+EOF
+dnl
+if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
+  libc_cv_x86_64_tls=yes
+else
+  libc_cv_x86_64_tls=no
+fi
+rm -f conftest*])
+if test $libc_cv_x86_64_tls = no; then
+  AC_MSG_ERROR([the assembler must support TLS])
+fi
+
+dnl It is always possible to access static and hidden symbols in an
+dnl position independent way.
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
+# work around problem with autoconf and empty lines at the end of files
diff --git a/sysdeps/x86_64/elf/configure b/sysdeps/x86_64/elf/configure
deleted file mode 100644
index 7f2b313bc4..0000000000
--- a/sysdeps/x86_64/elf/configure
+++ /dev/null
@@ -1,125 +0,0 @@
-
-# as_fn_set_status STATUS
-# -----------------------
-# Set $? to STATUS, without forking.
-as_fn_set_status ()
-{
-  return $1
-} # as_fn_set_status
-
-# as_fn_exit STATUS
-# -----------------
-# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
-as_fn_exit ()
-{
-  set +e
-  as_fn_set_status $1
-  exit $1
-} # as_fn_exit
-if expr a : '\(a\)' >/dev/null 2>&1 &&
-   test "X`expr 00001 : '.*\(...\)'`" = X001; then
-  as_expr=expr
-else
-  as_expr=false
-fi
-
-if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
-  as_basename=basename
-else
-  as_basename=false
-fi
-
-as_me=`$as_basename -- "$0" ||
-$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
-	 X"$0" : 'X\(//\)$' \| \
-	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X/"$0" |
-    sed '/^.*\/\([^/][^/]*\)\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\/\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\/\(\/\).*/{
-	    s//\1/
-	    q
-	  }
-	  s/.*/./; q'`
-
-
-  as_lineno_1=$LINENO as_lineno_1a=$LINENO
-  as_lineno_2=$LINENO as_lineno_2a=$LINENO
-  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
-  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
-  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
-  sed -n '
-    p
-    /[$]LINENO/=
-  ' <$as_myself |
-    sed '
-      s/[$]LINENO.*/&-/
-      t lineno
-      b
-      :lineno
-      N
-      :loop
-      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
-      t loop
-      s/-\n.*//
-    ' >$as_me.lineno &&
-  chmod +x "$as_me.lineno" ||
-    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
-
-  # Don't try to exec as it changes $[0], causing all sort of problems
-  # (the dirname of $[0] is not the place where we might find the
-  # original and so on.  Autoconf is especially sensitive to this).
-  . "./$as_me.lineno"
-  # Exit status is that of the last command.
-  exit
-}
-
-# This file is generated from configure.in by Autoconf.  DO NOT EDIT!
- # Local configure fragment for sysdeps/x86_64/elf.
-
-# Check for support of thread-local storage handling in assembler and linker.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for x86-64 TLS support" >&5
-$as_echo_n "checking for x86-64 TLS support... " >&6; }
-if ${libc_cv_x86_64_tls+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.s <<\EOF
-	.section ".tdata", "awT", @progbits
-	.globl foo
-foo:	.quad	1
-	.section ".tbss", "awT", @nobits
-	.globl bar
-bar:	.skip	8
-	.text
-baz:	leaq	bar@TLSLD(%rip), %rdi
-	leaq	bar@DTPOFF(%rax), %rcx
-	addq	foo@GOTTPOFF(%rip), %rax
-	movq	$bar@TPOFF, %rdx
-EOF
-if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'
-  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; }; then
-  libc_cv_x86_64_tls=yes
-else
-  libc_cv_x86_64_tls=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_x86_64_tls" >&5
-$as_echo "$libc_cv_x86_64_tls" >&6; }
-if test $libc_cv_x86_64_tls = no; then
-  as_fn_error $? "the assembler must support TLS" "$LINENO" 5
-fi
-
-$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
-
-# work around problem with autoconf and empty lines at the end of files
diff --git a/sysdeps/x86_64/elf/configure.in b/sysdeps/x86_64/elf/configure.in
deleted file mode 100644
index c53328b4c9..0000000000
--- a/sysdeps/x86_64/elf/configure.in
+++ /dev/null
@@ -1,33 +0,0 @@
-GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
-# Local configure fragment for sysdeps/x86_64/elf.
-
-# Check for support of thread-local storage handling in assembler and linker.
-AC_CACHE_CHECK(for x86-64 TLS support, libc_cv_x86_64_tls, [dnl
-cat > conftest.s <<\EOF
-	.section ".tdata", "awT", @progbits
-	.globl foo
-foo:	.quad	1
-	.section ".tbss", "awT", @nobits
-	.globl bar
-bar:	.skip	8
-	.text
-baz:	leaq	bar@TLSLD(%rip), %rdi
-	leaq	bar@DTPOFF(%rax), %rcx
-	addq	foo@GOTTPOFF(%rip), %rax
-	movq	$bar@TPOFF, %rdx
-EOF
-dnl
-if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
-  libc_cv_x86_64_tls=yes
-else
-  libc_cv_x86_64_tls=no
-fi
-rm -f conftest*])
-if test $libc_cv_x86_64_tls = no; then
-  AC_MSG_ERROR([the assembler must support TLS])
-fi
-
-dnl It is always possible to access static and hidden symbols in an
-dnl position independent way.
-AC_DEFINE(PI_STATIC_AND_HIDDEN)
-# work around problem with autoconf and empty lines at the end of files
diff --git a/sysdeps/x86_64/elf/start.S b/sysdeps/x86_64/start.S
index 5e01d21179..5e01d21179 100644
--- a/sysdeps/x86_64/elf/start.S
+++ b/sysdeps/x86_64/start.S