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, 99 insertions, 0 deletions

diff --git a/gcc/config/linux.h b/gcc/config/linux.h
new file mode 100644
index 000000000..00b4f1c1c
--- /dev/null
+++ b/gcc/config/linux.h
@@ -0,0 +1,99 @@
+/* Definitions for systems using the Linux kernel, with or without
+   MMU, using ELF at the compiler level but possibly FLT for final
+   linked executables and shared libraries in some no-MMU cases, and
+   possibly with a choice of libc implementations.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006,
+   2007, 2009, 2010, 2011 Free Software Foundation, Inc.
+   Contributed by Eric Youngdale.
+   Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
+
+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/>.  */
+
+/* C libraries supported on Linux.  */
+#ifdef SINGLE_LIBC
+#define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+#define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+#define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#else
+#define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+#define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
+#endif
+
+#define LINUX_TARGET_OS_CPP_BUILTINS()				\
+    do {							\
+	if (OPTION_GLIBC)					\
+	  builtin_define ("__gnu_linux__");			\
+	builtin_define_std ("linux");				\
+	builtin_define_std ("unix");				\
+	builtin_assert ("system=linux");			\
+	builtin_assert ("system=unix");				\
+	builtin_assert ("system=posix");			\
+    } while (0)
+
+/* Determine which dynamic linker to use depending on whether GLIBC or
+   uClibc or Bionic is the default C library and whether
+   -muclibc or -mglibc or -mbionic has been passed to change the default.  */
+
+#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3)	\
+  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
+
+#if DEFAULT_LIBC == LIBC_GLIBC
+#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
+#elif DEFAULT_LIBC == LIBC_UCLIBC
+#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
+#elif DEFAULT_LIBC == LIBC_BIONIC
+#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
+#else
+#error "Unsupported DEFAULT_LIBC"
+#endif /* DEFAULT_LIBC */
+
+/* For most targets the following definitions suffice;
+   GLIBC_DYNAMIC_LINKER must be defined for each target using them, or
+   GLIBC_DYNAMIC_LINKER32 and GLIBC_DYNAMIC_LINKER64 for targets
+   supporting both 32-bit and 64-bit compilation.  */
+#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
+#define BIONIC_DYNAMIC_LINKER "/system/bin/linker"
+#define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker"
+#define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64"
+
+#define LINUX_DYNAMIC_LINKER						\
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
+			 BIONIC_DYNAMIC_LINKER)
+#define LINUX_DYNAMIC_LINKER32						\
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+			 BIONIC_DYNAMIC_LINKER32)
+#define LINUX_DYNAMIC_LINKER64						\
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+			 BIONIC_DYNAMIC_LINKER64)
+
+/* Determine whether the entire c99 runtime
+   is present in the runtime library.  */
+#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
+
+/* Whether we have sincos that follows the GNU extension.  */
+#define TARGET_HAS_SINCOS (OPTION_GLIBC || OPTION_BIONIC)