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diff --git a/gcc/config/i386/x86-64.h b/gcc/config/i386/x86-64.h
index 56e46841..96649af7 100644
--- a/gcc/config/i386/x86-64.h
+++ b/gcc/config/i386/x86-64.h
@@ -1,23 +1,27 @@
 /* OS independent definitions for AMD x86-64.
-   Copyright (C) 2001 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2005, 2007, 2009 Free Software Foundation, Inc.
    Contributed by Bo Thorsen <bo@suse.de>.
 
-This file is part of GNU CC.
+This file is part of GCC.
 
-GNU CC is free software; you can redistribute it and/or modify
+GCC is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
 any later version.
 
-GNU CC is distributed in the hope that it will be useful,
+GCC 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 General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
 
 #undef ASM_COMMENT_START
 #define ASM_COMMENT_START "#"
@@ -27,18 +31,10 @@ Boston, MA 02111-1307, USA.  */
   (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
 
 /* Output assembler code to FILE to call the profiler.  */
-#define NO_PROFILE_COUNTERS
-
-#undef FUNCTION_PROFILER
-#define FUNCTION_PROFILER(FILE, LABELNO)  \
-{									\
-  if (TARGET_64BIT && flag_pic)						\
-    fprintf (FILE, "\tcall\t*mcount@PLT\n");				\
-  else if (flag_pic)							\
-    fprintf (FILE, "\tcall\t*mcount@GOT(%%ebx)\n");			\
-  else									\
-    fprintf (FILE, "\tcall\tmcount\n");					\
-}
+#define NO_PROFILE_COUNTERS 1
+
+#undef MCOUNT_NAME
+#define MCOUNT_NAME "mcount"
 
 #undef SIZE_TYPE
 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
@@ -57,41 +53,48 @@ Boston, MA 02111-1307, USA.  */
 
 #undef ASM_SPEC
 #define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} \
- %{Wa,*:%*} %{m32:--32}"
-
-/* A C statement (sans semicolon) to output to the stdio stream
-   FILE the assembler definition of uninitialized global DECL named
-   NAME whose size is SIZE bytes and alignment is ALIGN bytes.
-   Try to use asm_output_aligned_bss to implement this macro.  */
+ %{Wa,*:%*} %{m32:--32} %{m64:--64}"
 
+#undef ASM_OUTPUT_ALIGNED_BSS
 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
-  asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
+  x86_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
 
-/* A C statement to output to the stdio stream FILE an assembler
-   command to advance the location counter to a multiple of 1<<LOG
-   bytes if it is within MAX_SKIP bytes.
+#undef  ASM_OUTPUT_ALIGNED_COMMON
+#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)		\
+  x86_elf_aligned_common (FILE, NAME, SIZE, ALIGN);
 
-   This is used to align code labels according to Intel recommendations.  */
+/* This is used to align code labels according to Intel recommendations.  */
 
+#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP)			\
   do {									\
     if ((LOG) != 0) {							\
       if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG));	\
-      else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));	\
+      else {								\
+	fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));	\
+	/* Make sure that we have at least 8 byte alignment if > 8 byte \
+	   alignment is preferred.  */					\
+	if ((LOG) > 3							\
+	    && (1 << (LOG)) > ((MAX_SKIP) + 1)				\
+	    && (MAX_SKIP) >= 7)						\
+	  fprintf ((FILE), "\t.p2align 3\n");				\
+      }									\
     }									\
   } while (0)
+#endif
 
 
 /* i386 System V Release 4 uses DWARF debugging info.
    x86-64 ABI specifies DWARF2.  */
 
-#undef DWARF2_DEBUGGING_INFO
-#undef DWARF_DEBUGGING_INFO
-#define DWARF2_DEBUGGING_INFO
+#define DWARF2_DEBUGGING_INFO 1
 #define DWARF2_UNWIND_INFO 1
-/* Incorrectly autodetected in cross compilation.  */
-#undef HAVE_AS_DWARF2_DEBUG_LINE
-#define HAVE_AS_DWARF2_DEBUG_LINE
 
 #undef PREFERRED_DEBUGGING_TYPE
 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+
+#undef TARGET_ASM_SELECT_SECTION
+#define TARGET_ASM_SELECT_SECTION  x86_64_elf_select_section
+
+#undef TARGET_ASM_UNIQUE_SECTION
+#define TARGET_ASM_UNIQUE_SECTION  x86_64_elf_unique_section