obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 132 insertions, 0 deletions

diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
new file mode 100644
index 000000000..103ab0c99
--- /dev/null
+++ b/gcc/config/i386/linux64.h
@@ -0,0 +1,132 @@
+/* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format.
+   Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+   Free Software Foundation, Inc.
+   Contributed by Jan Hubicka <jh@suse.cz>, based on linux.h.
+
+This file is part of GCC.
+
+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 3, or (at your option)
+any later version.
+
+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.
+
+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/>.  */
+
+#if TARGET_64BIT_DEFAULT
+#define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)");
+#else
+#define TARGET_VERSION fprintf (stderr, " (i386 Linux/ELF)");
+#endif
+
+#define TARGET_OS_CPP_BUILTINS()				\
+  do								\
+    {								\
+	LINUX_TARGET_OS_CPP_BUILTINS();				\
+    }								\
+  while (0)
+
+#undef CPP_SPEC
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
+
+#undef CC1_SPEC
+#define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
+
+/* The svr4 ABI for the i386 says that records and unions are returned
+   in memory.  In the 64bit compilation we will turn this flag off in
+   ix86_option_override_internal, as we never do pcc_struct_return
+   scheme on this target.  */
+#undef DEFAULT_PCC_STRUCT_RETURN
+#define DEFAULT_PCC_STRUCT_RETURN 1
+
+/* We arrange for the whole %fs segment to map the tls area.  */
+#undef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT
+#define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT MASK_TLS_DIRECT_SEG_REFS
+
+/* Provide a LINK_SPEC.  Here we provide support for the special GCC
+   options -static and -shared, which allow us to link things in one
+   of these three modes by applying the appropriate combinations of
+   options at link-time.
+
+   When the -shared link option is used a final link is not being
+   done.  */
+
+#define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+
+#if TARGET_64BIT_DEFAULT
+#define SPEC_32 "m32"
+#define SPEC_64 "!m32"
+#else
+#define SPEC_32 "!m64"
+#define SPEC_64 "m64"
+#endif
+
+#undef ASM_SPEC
+#define ASM_SPEC "%{" SPEC_32 ":--32} %{" SPEC_64 ":--64} \
+ %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}"
+
+#undef	LINK_SPEC
+#define LINK_SPEC "%{" SPEC_64 ":-m elf_x86_64} %{" SPEC_32 ":-m elf_i386} \
+  %{shared:-shared} \
+  %{!shared: \
+    %{!static: \
+      %{rdynamic:-export-dynamic} \
+      %{" SPEC_32 ":-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \
+      %{" SPEC_64 ":-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}} \
+    %{static:-static}}"
+
+/* Similar to standard Linux, but adding -ffast-math support.  */
+#undef  ENDFILE_SPEC
+#define ENDFILE_SPEC \
+  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
+   %{mpc32:crtprec32.o%s} \
+   %{mpc64:crtprec64.o%s} \
+   %{mpc80:crtprec80.o%s} \
+   %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
+
+#if TARGET_64BIT_DEFAULT
+#define MULTILIB_DEFAULTS { "m64" }
+#else
+#define MULTILIB_DEFAULTS { "m32" }
+#endif
+
+/* Put all *tf routines in libgcc.  */
+#undef LIBGCC2_HAS_TF_MODE
+#define LIBGCC2_HAS_TF_MODE 1
+#define LIBGCC2_TF_CEXT q
+#define TF_SIZE 113
+
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
+#define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h"
+
+/* The stack pointer needs to be moved while checking the stack.  */
+#define STACK_CHECK_MOVING_SP 1
+
+/* Static stack checking is supported by means of probes.  */
+#define STACK_CHECK_STATIC_BUILTIN 1
+
+/* This macro may be overridden in i386/k*bsd-gnu.h.  */
+#define REG_NAME(reg) reg
+
+#ifdef TARGET_LIBC_PROVIDES_SSP
+/* i386 glibc provides __stack_chk_guard in %gs:0x14,
+   x86_64 glibc provides it in %fs:0x28.  */
+#define TARGET_THREAD_SSP_OFFSET	(TARGET_64BIT ? 0x28 : 0x14)
+
+/* We steal the last transactional memory word.  */
+#define TARGET_CAN_SPLIT_STACK
+#define TARGET_THREAD_SPLIT_STACK_OFFSET (TARGET_64BIT ? 0x70 : 0x30)
+#endif