* configure: Regenerated after aclocal.m4 change.

	* sysdeps/x86_64/sysdep.h [HAVE_ELF] (L): Define with .L##name form.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h (L): Don't define it here.

	* sysdeps/generic/dl-lookupcfg.h [USE_TLS] (DL_LOOKUP_RETURNS_MAP):
	Define it, because _dl_sym presumes it (for any platform).

	* sysdeps/x86_64/dl-tls.h: New file.

	* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Add a cast.

	* sysdeps/x86_64/elf/configure.in: New file.
	* sysdeps/x86_64/elf/configure: New generated file.

7 files changed, 125 insertions, 9 deletions

diff --git a/sysdeps/generic/dl-lookupcfg.h b/sysdeps/generic/dl-lookupcfg.h
index 810e8c7c6a..76c803dcb1 100644
--- a/sysdeps/generic/dl-lookupcfg.h
+++ b/sysdeps/generic/dl-lookupcfg.h
@@ -1,5 +1,5 @@
 /* Configuration of lookup functions.
-   Copyright (C) 2000 Free Software Foundation, Inc.
+   Copyright (C) 2002 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
@@ -18,5 +18,12 @@
    02111-1307 USA.  */
 
 /* Some platforms need more information from the symbol lookup function
-   than just the address.  But this is not generally the case.  */
-#undef DL_LOOKUP_RETURNS_MAP
+   than just the address.  But this is not generally the case.
+
+   However, because of how _dl_sym and _dl_tls_symaddr are written, every
+   platform needs it when we support TLS.  */
+#ifdef USE_TLS
+# define DL_LOOKUP_RETURNS_MAP
+#else
+# undef DL_LOOKUP_RETURNS_MAP
+#endif
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
index eda905fdb5..70aa826b18 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -41,10 +41,6 @@
 # define __NR_pwrite __NR_pwrite64
 #endif
 
-/* ELF-like local names start with `.L'.  */
-#undef L
-#define L(name)	.L##name
-
 #ifdef __ASSEMBLER__
 
 /* Linux uses a negative return value to indicate syscall errors,
diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h
index b55523649b..21459b9ab5 100644
--- a/sysdeps/x86_64/dl-machine.h
+++ b/sysdeps/x86_64/dl-machine.h
@@ -378,7 +378,8 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
 #endif
 #if defined USE_TLS && !defined RTLD_BOOTSTRAP
       struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
-      Elf64_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
+      Elf64_Addr value = (sym == NULL ? 0
+			  : (Elf64_Addr) sym_map->l_addr + sym->st_value);
 #else
       Elf64_Addr value = RESOLVE (&sym, version, r_type);
 
diff --git a/sysdeps/x86_64/dl-tls.h b/sysdeps/x86_64/dl-tls.h
new file mode 100644
index 0000000000..3e4768dc1f
--- /dev/null
+++ b/sysdeps/x86_64/dl-tls.h
@@ -0,0 +1,29 @@
+/* Thread-local storage handling in the ELF dynamic linker.  x86-64 version.
+   Copyright (C) 2002 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+
+/* Type used for the representation of TLS information in the GOT.  */
+typedef struct
+{
+  unsigned long int ti_module;
+  unsigned long int ti_offset;
+} tls_index;
+
+
+extern void *__tls_get_addr (tls_index *ti);
diff --git a/sysdeps/x86_64/elf/configure b/sysdeps/x86_64/elf/configure
new file mode 100755
index 0000000000..466ccd1b1b
--- /dev/null
+++ b/sysdeps/x86_64/elf/configure
@@ -0,0 +1,43 @@
+ # Local configure fragment for sysdeps/x86_64/elf.
+
+if test "$usetls" != no; then
+# Check for support of thread-local storage handling in assembler and linker.
+echo $ac_n "checking for x86-64 TLS support""... $ac_c" 1>&6
+echo "configure:7: checking for x86-64 TLS support" >&5
+if eval "test \"`echo '$''{'libc_cv_x86_64_tls'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&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 $CFLAGS conftest.s 1>&5'; { (eval echo configure:24: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+  libc_cv_x86_64_tls=yes
+else
+  libc_cv_x86_64_tls=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$libc_cv_x86_64_tls" 1>&6
+if test $libc_cv_x86_64_tls = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_TLS_SUPPORT 1
+EOF
+
+fi
+fi
+
+cat >> confdefs.h <<\EOF
+#define PI_STATIC_AND_HIDDEN 1
+EOF
+
diff --git a/sysdeps/x86_64/elf/configure.in b/sysdeps/x86_64/elf/configure.in
new file mode 100644
index 0000000000..7679a09b76
--- /dev/null
+++ b/sysdeps/x86_64/elf/configure.in
@@ -0,0 +1,35 @@
+sinclude(./aclocal.m4)dnl Autoconf lossage
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/x86_64/elf.
+
+if test "$usetls" != no; then
+# 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>&AC_FD_CC); 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 = yes; then
+  AC_DEFINE(HAVE_TLS_SUPPORT)
+fi
+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/x86_64/sysdep.h b/sysdeps/x86_64/sysdep.h
index a9c0d25f11..1aa60fea8e 100644
--- a/sysdeps/x86_64/sysdep.h
+++ b/sysdeps/x86_64/sysdep.h
@@ -94,7 +94,12 @@ lose:									      \
 
 /* Local label name for asm code. */
 #ifndef L
-#define L(name)		name
+# ifdef HAVE_ELF
+/* ELF-like local names start with `.L'.  */
+#  define L(name)	.L##name
+# else
+#  define L(name)	name
+# endif
 #endif
 
 #endif	/* __ASSEMBLER__ */