Add GCC 4.5.2

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3535 42af7a65-404d-4744-a932-0658087f49c3

15 files changed, 661 insertions, 21 deletions

diff --git a/misc/buildroot/ChangeLog b/misc/buildroot/ChangeLog
index 37072928e..974fa0f02 100644
--- a/misc/buildroot/ChangeLog
+++ b/misc/buildroot/ChangeLog
@@ -89,11 +89,17 @@ buildroot-1.10 2011-xx-xx <spudmonkey@racsa.co.cr>
 	  .exe files).  That is probably not usable for most NuttX targets.
 	  Instead, you should use this i486-elf-gcc to generate true ELF binaries
 	  under Cygwin.
-	* Makefile - Alter copy arguements to avoid permissions problems when
+	* Makefile - Alter copy arguments to avoid permissions problems when
 	  copying NuttX header files.
 	* toolchain/nxflat/nxflat.mk and Makefile - Fix include paths.
 	* toolchain/gcc/3.3.6 - Added a patch to fixed compilation error on Ubuntu
 	  9.10.
 	* toolchain/nxflat/Makefile - Correct static library link order.
+	* configs/arm920t-defconfig-4.3.3 - Enable support for NXFLAT tools.
+	* toolchain/binutils/2.21 and toolchain/gcc/4.5.2 - Add support for GCC
+	  4.5.2 with binutils 2.21.
+	* configs/cortex-eabi-defconfig-4.5.2 - Add a configuration to build a
+	  GCC 4.5.2 EABI ARM toolchain for the Cortex-M3.
+
 
 
diff --git a/misc/buildroot/configs/README.txt b/misc/buildroot/configs/README.txt
index 91c2fcc42..45fdeab55 100644
--- a/misc/buildroot/configs/README.txt
+++ b/misc/buildroot/configs/README.txt
@@ -46,7 +46,7 @@ avr-defconfig-4.3.3
 	is intended to support the NuttX ATmega128 port.
 
 cortexm3-defconfig-4.3.3
-	Builds an ARM toolchain for the Cortex-M3 using gcc 4.3.3.
+	Builds an OABI ARM toolchain for the Cortex-M3 using gcc 4.3.3.
 	This configuration builds gcc, g++ and the NXFLAT toolchain.
 
 cortexm3-defconfig-nxflat
@@ -55,6 +55,10 @@ arm926t-defconfig-nxflat
 	use with the Cortex-M3 or ARM9 (untested on ARM9 as of this
 	writing).
 
+cortexm3-eabi-defconfig-4.5.2
+	Builds an EABI ARM toolchain for the Cortex-M3 using gcc 4.5.2.
+	This configuration builds gcc, g++ and the NXFLAT toolchain.
+
 bfin-defconfig-4.2.4
 	Builds an Blackfin toolchain using gcc 4.2.4
 
@@ -121,6 +125,8 @@ GENERAL BUILD STEPS
      sure that you have installed both the libraries and the header files.
      They may be located in separate packages."
 
+   Version 4.5.x and beyond also require the MPC package.
+ 
    You should try your package manager for whatever Linux version you are using
    first.  The header files are normally included in versions of the packages that
    have "-devel" in the package name.
diff --git a/misc/buildroot/toolchain/binutils/2.21/110-arm-eabi-conf.patch b/misc/buildroot/toolchain/binutils/2.21/110-arm-eabi-conf.patch
new file mode 100644
index 000000000..af26329d9
--- /dev/null
+++ b/misc/buildroot/toolchain/binutils/2.21/110-arm-eabi-conf.patch
@@ -0,0 +1,24 @@
+diff -rdup binutils-2.18.50.0.3.orig/configure binutils-2.18.50.0.3/configure
+--- binutils-2.18.50.0.3.orig/configure	2007-11-22 12:41:26.000000000 +0100
++++ binutils-2.18.50.0.3/configure	2007-11-22 12:45:01.000000000 +0100
+@@ -2245,7 +2245,7 @@ case "${target}" in
+     noconfigdirs="$noconfigdirs target-libffi target-qthreads"
+     libgloss_dir=arm
+     ;;
+-  arm*-*-linux-gnueabi)
++  arm*-*-linux-*gnueabi)
+     noconfigdirs="$noconfigdirs target-qthreads"
+     noconfigdirs="$noconfigdirs target-libobjc"
+     case ${with_newlib} in
+diff -rdup binutils-2.18.50.0.3.orig/configure.ac binutils-2.18.50.0.3/configure.ac
+--- binutils-2.18.50.0.3.orig/configure.ac	2007-11-22 12:41:26.000000000 +0100
++++ binutils-2.18.50.0.3/configure.ac	2007-11-22 12:44:54.000000000 +0100
+@@ -522,7 +522,7 @@ case "${target}" in
+     noconfigdirs="$noconfigdirs target-libffi target-qthreads"
+     libgloss_dir=arm
+     ;;
+-  arm*-*-linux-gnueabi)
++  arm*-*-linux-*gnueabi)
+     noconfigdirs="$noconfigdirs target-qthreads"
+     noconfigdirs="$noconfigdirs target-libobjc"
+     case ${with_newlib} in
diff --git a/misc/buildroot/toolchain/binutils/2.21/120-sh-conf.patch b/misc/buildroot/toolchain/binutils/2.21/120-sh-conf.patch
new file mode 100644
index 000000000..071d15a41
--- /dev/null
+++ b/misc/buildroot/toolchain/binutils/2.21/120-sh-conf.patch
@@ -0,0 +1,42 @@
+diff -rdup binutils-2.18.50.0.9.old/configure binutils-2.18.50.0.9/configure
+--- binutils-2.18.50.0.9.old/configure	2008-08-23 17:36:13.000000000 +0200
++++ binutils-2.18.50.0.9/configure	2008-10-14 14:25:22.000000000 +0200
+@@ -2281,7 +2281,7 @@ case "${target}" in
+   am33_2.0-*-linux*)
+     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
+     ;;
+-  sh-*-linux*)
++  sh*-*-linux*)
+     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
+     ;;
+   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
+@@ -2606,7 +2606,7 @@ case "${target}" in
+   romp-*-*)
+     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes target-libgloss ${libgcj}"
+     ;;
+-  sh-*-* | sh64-*-*)
++  sh*-*-* | sh64-*-*)
+     case "${host}" in
+       i[3456789]86-*-vsta) ;; # don't add gprof back in
+       i[3456789]86-*-go32*) ;; # don't add gprof back in
+diff -rdup binutils-2.18.50.0.9.old/configure.ac binutils-2.18.50.0.9/configure.ac
+--- binutils-2.18.50.0.9.old/configure.ac	2008-08-23 17:36:13.000000000 +0200
++++ binutils-2.18.50.0.9/configure.ac	2008-10-14 14:25:11.000000000 +0200
+@@ -530,7 +530,7 @@ case "${target}" in
+   am33_2.0-*-linux*)
+     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
+     ;;
+-  sh-*-linux*)
++  sh*-*-linux*)
+     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
+     ;;    
+   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
+@@ -855,7 +855,7 @@ case "${target}" in
+   romp-*-*)
+     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes target-libgloss ${libgcj}"
+     ;;
+-  sh-*-* | sh64-*-*)
++  sh*-*-* | sh64-*-*)
+     case "${host}" in
+       i[[3456789]]86-*-vsta) ;; # don't add gprof back in
+       i[[3456789]]86-*-go32*) ;; # don't add gprof back in
diff --git a/misc/buildroot/toolchain/binutils/2.21/300-001_ld_makefile_patch.patch b/misc/buildroot/toolchain/binutils/2.21/300-001_ld_makefile_patch.patch
new file mode 100644
index 000000000..5cb0f614d
--- /dev/null
+++ b/misc/buildroot/toolchain/binutils/2.21/300-001_ld_makefile_patch.patch
@@ -0,0 +1,24 @@
+diff -u binutils-2.17.50.0.17.oorig/ld/Makefile.am binutils-2.17.50.0.17/ld/Makefile.am
+--- binutils-2.17.50.0.17.oorig/ld/Makefile.am	2007-06-18 19:29:29.000000000 +0200
++++ binutils-2.17.50.0.17/ld/Makefile.am	2007-06-25 10:00:36.000000000 +0200
+@@ -18,7 +18,7 @@
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
++scriptdir = $(libdir)
+ 
+ EMUL = @EMUL@
+ EMULATION_OFILES = @EMULATION_OFILES@
+diff -u binutils-2.17.50.0.17.oorig/ld/Makefile.in binutils-2.17.50.0.17/ld/Makefile.in
+--- binutils-2.17.50.0.17.oorig/ld/Makefile.in	2007-06-18 19:29:29.000000000 +0200
++++ binutils-2.17.50.0.17/ld/Makefile.in	2007-06-25 10:00:36.000000000 +0200
+@@ -287,7 +287,7 @@
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
++scriptdir = $(libdir)
+ BASEDIR = $(srcdir)/..
+ BFDDIR = $(BASEDIR)/bfd
+ INCDIR = $(BASEDIR)/include
diff --git a/misc/buildroot/toolchain/binutils/2.21/300-012_check_ldrunpath_length.patch b/misc/buildroot/toolchain/binutils/2.21/300-012_check_ldrunpath_length.patch
new file mode 100644
index 000000000..df783109b
--- /dev/null
+++ b/misc/buildroot/toolchain/binutils/2.21/300-012_check_ldrunpath_length.patch
@@ -0,0 +1,21 @@
+diff -Nura binutils-2.21.orig/ld/emultempl/elf32.em binutils-2.21/ld/emultempl/elf32.em
+--- binutils-2.21.orig/ld/emultempl/elf32.em	2010-10-29 09:10:36.000000000 -0300
++++ binutils-2.21/ld/emultempl/elf32.em	2010-12-10 09:26:56.746102724 -0300
+@@ -1270,6 +1270,8 @@
+ 	      && command_line.rpath == NULL)
+ 	    {
+ 	      lib_path = (const char *) getenv ("LD_RUN_PATH");
++	      if ((lib_path) && (strlen (lib_path) == 0))
++	      	lib_path = NULL;
+ 	      if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
+ 						      force))
+ 		break;
+@@ -1497,6 +1499,8 @@
+   rpath = command_line.rpath;
+   if (rpath == NULL)
+     rpath = (const char *) getenv ("LD_RUN_PATH");
++  if ((rpath) && (strlen (rpath) == 0))
++  	rpath = NULL;
+ 
+   for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
+     if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
diff --git a/misc/buildroot/toolchain/binutils/Config.in b/misc/buildroot/toolchain/binutils/Config.in
index 32a9f022a..a51d280cf 100644
--- a/misc/buildroot/toolchain/binutils/Config.in
+++ b/misc/buildroot/toolchain/binutils/Config.in
@@ -26,6 +26,10 @@ choice
 	config BR2_BINUTILS_VERSION_2_19_1
 		depends !BR2_avr32 && !BR2_nios2 && !BR2_m9s12x
 		bool "binutils 2.19.1"
+
+	config BR2_BINUTILS_VERSION_2_21
+		depends !BR2_avr32 && !BR2_nios2 && !BR2_m9s12x
+		bool "binutils 2.21"
 endchoice
 
 config BR2_BINUTILS_VERSION
@@ -34,6 +38,7 @@ config BR2_BINUTILS_VERSION
 	default "2.18"            if BR2_BINUTILS_VERSION_2_18
 	default "2.19"            if BR2_BINUTILS_VERSION_2_19
 	default "2.19.1"          if BR2_BINUTILS_VERSION_2_19_1
+	default "2.21"            if BR2_BINUTILS_VERSION_2_21
 
 config BR2_EXTRA_BINUTILS_CONFIG_OPTIONS
 	string "Additional binutils options"
diff --git a/misc/buildroot/toolchain/binutils/binutils.mk b/misc/buildroot/toolchain/binutils/binutils.mk
index 3e9d5aced..e4f00c899 100644
--- a/misc/buildroot/toolchain/binutils/binutils.mk
+++ b/misc/buildroot/toolchain/binutils/binutils.mk
@@ -8,23 +8,11 @@ BINUTILS_VERSION:=$(strip $(subst ",, $(BR2_BINUTILS_VERSION)))
 
 EXTRA_BINUTILS_CONFIG_OPTIONS=$(strip $(subst ",, $(BR2_EXTRA_BINUTILS_CONFIG_OPTIONS)))
 #"))
-BINUTILS_SITE:=ftp://ftp.kernel.org/pub/linux/devel/binutils
-ifeq ($(BINUTILS_VERSION),2.19.1)
-BINUTILS_SITE:=ftp://ftp.gnu.org/gnu/binutils/
-endif
-ifeq ($(BINUTILS_VERSION),2.19)
-BINUTILS_SITE:=ftp://ftp.gnu.org/gnu/binutils/
-endif
-ifeq ($(BINUTILS_VERSION),2.17)
-BINUTILS_SITE:=ftp://ftp.gnu.org/gnu/binutils/
-endif
+BINUTILS_SITE:=ftp://ftp.gnu.org/gnu/binutils
 
 # NOTE: Unlike the original buildroot binutils.mk, this version always relies on
 # the system libgmp and libmpfr which must be installed for certain binutils versions.
 
-BINUTILS_HOST_PREREQ:=
-BINUTILS_TARGET_PREREQ:=
-
 BINUTILS_SOURCE:=binutils-$(BINUTILS_VERSION).tar.bz2
 BINUTILS_DIR:=$(TOOL_BUILD_DIR)/binutils-$(BINUTILS_VERSION)
 BINUTILS_CAT:=$(BZCAT)
@@ -71,7 +59,7 @@ $(BINUTILS_DIR1)/binutils/objdump: $(BINUTILS_DIR1)/.configured
 $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/bin/ld: $(BINUTILS_DIR1)/binutils/objdump
 	$(MAKE) -C $(BINUTILS_DIR1) install
 
-binutils: dependencies $(BINUTILS_HOST_PREREQ) $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/bin/ld
+binutils: dependencies $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/bin/ld
 
 binutils-source: $(DL_DIR)/$(BINUTILS_SOURCE)
 
@@ -124,7 +112,7 @@ $(TARGET_DIR)/usr/bin/ld: $(BINUTILS_DIR2)/binutils/objdump
 	-$(STRIP) $(TARGET_DIR)/usr/$(REAL_GNU_TARGET_NAME)/bin/* > /dev/null 2>&1
 	-$(STRIP) $(TARGET_DIR)/usr/bin/* > /dev/null 2>&1
 
-binutils_target: $(BINUTILS_TARGET_PREREQ) $(TARGET_DIR)/usr/bin/ld
+binutils_target: $(TARGET_DIR)/usr/bin/ld
 
 binutils_target-clean:
 	(cd $(TARGET_DIR)/usr/bin; \
diff --git a/misc/buildroot/toolchain/gcc/4.5.2/305-libmudflap-susv3-legacy.patch b/misc/buildroot/toolchain/gcc/4.5.2/305-libmudflap-susv3-legacy.patch
new file mode 100644
index 000000000..374b1f865
--- /dev/null
+++ b/misc/buildroot/toolchain/gcc/4.5.2/305-libmudflap-susv3-legacy.patch
@@ -0,0 +1,49 @@
+Index: gcc-4.2/libmudflap/mf-hooks2.c
+===================================================================
+--- gcc-4.2/libmudflap/mf-hooks2.c	(revision 119834)
++++ gcc-4.2/libmudflap/mf-hooks2.c	(working copy)
+@@ -427,7 +427,7 @@
+ {
+   TRACE ("%s\n", __PRETTY_FUNCTION__);
+   MF_VALIDATE_EXTENT(s, n, __MF_CHECK_WRITE, "bzero region");
+-  bzero (s, n);
++  memset (s, 0, n);
+ }
+ 
+ 
+@@ -437,7 +437,7 @@
+   TRACE ("%s\n", __PRETTY_FUNCTION__);
+   MF_VALIDATE_EXTENT(src, n, __MF_CHECK_READ, "bcopy src");
+   MF_VALIDATE_EXTENT(dest, n, __MF_CHECK_WRITE, "bcopy dest");
+-  bcopy (src, dest, n);
++  memmove (dest, src, n);
+ }
+ 
+ 
+@@ -447,7 +447,7 @@
+   TRACE ("%s\n", __PRETTY_FUNCTION__);
+   MF_VALIDATE_EXTENT(s1, n, __MF_CHECK_READ, "bcmp 1st arg");
+   MF_VALIDATE_EXTENT(s2, n, __MF_CHECK_READ, "bcmp 2nd arg");
+-  return bcmp (s1, s2, n);
++  return n == 0 ? 0 : memcmp (s1, s2, n);
+ }
+ 
+ 
+@@ -456,7 +456,7 @@
+   size_t n = strlen (s);
+   TRACE ("%s\n", __PRETTY_FUNCTION__);
+   MF_VALIDATE_EXTENT(s, CLAMPADD(n, 1), __MF_CHECK_READ, "index region");
+-  return index (s, c);
++  return strchr (s, c);
+ }
+ 
+ 
+@@ -465,7 +465,7 @@
+   size_t n = strlen (s);
+   TRACE ("%s\n", __PRETTY_FUNCTION__);
+   MF_VALIDATE_EXTENT(s, CLAMPADD(n, 1), __MF_CHECK_READ, "rindex region");
+-  return rindex (s, c);
++  return strrchr (s, c);
+ }
+ 
+ /* XXX:  stpcpy, memccpy */
diff --git a/misc/buildroot/toolchain/gcc/4.5.2/810-arm-softfloat-libgcc.patch b/misc/buildroot/toolchain/gcc/4.5.2/810-arm-softfloat-libgcc.patch
new file mode 100644
index 000000000..e6a30a3f0
--- /dev/null
+++ b/misc/buildroot/toolchain/gcc/4.5.2/810-arm-softfloat-libgcc.patch
@@ -0,0 +1,38 @@
+[PATCH] add the correct symbols to libgcc for uclibc arm softfloat
+
+Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
+---
+ gcc/config/arm/linux-elf.h |    2 +-
+ gcc/config/arm/t-linux     |    6 +++++-
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+Index: gcc-4.4.0/gcc/config/arm/t-linux
+===================================================================
+--- gcc-4.4.0.orig/gcc/config/arm/t-linux
++++ gcc-4.4.0/gcc/config/arm/t-linux
+@@ -4,7 +4,11 @@
+ 
+ LIB1ASMSRC = arm/lib1funcs.asm
+ LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \
+-	_arm_addsubdf3 _arm_addsubsf3
++	_arm_addsubdf3 _arm_addsubsf3 \
++	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
++	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
++	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
++	_arm_fixsfsi _arm_fixunssfsi
+ 
+ # MULTILIB_OPTIONS = mhard-float/msoft-float
+ # MULTILIB_DIRNAMES = hard-float soft-float
+Index: gcc-4.4.0/gcc/config/arm/linux-elf.h
+===================================================================
+--- gcc-4.4.0.orig/gcc/config/arm/linux-elf.h
++++ gcc-4.4.0/gcc/config/arm/linux-elf.h
+@@ -60,7 +60,7 @@
+    %{shared:-lc} \
+    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
+ 
+-#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} -lgcc"
++#define LIBGCC_SPEC "-lgcc"
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
diff --git a/misc/buildroot/toolchain/gcc/4.5.2/820-arm-unbreak-armv4t.patch b/misc/buildroot/toolchain/gcc/4.5.2/820-arm-unbreak-armv4t.patch
new file mode 100644
index 000000000..8651afcd8
--- /dev/null
+++ b/misc/buildroot/toolchain/gcc/4.5.2/820-arm-unbreak-armv4t.patch
@@ -0,0 +1,14 @@
+http://sourceware.org/ml/crossgcc/2008-05/msg00009.html
+
+diff -Nura gcc-4.5.1.orig/gcc/config/arm/linux-eabi.h gcc-4.5.1/gcc/config/arm/linux-eabi.h
+--- gcc-4.5.1.orig/gcc/config/arm/linux-eabi.h	2009-10-30 17:03:09.000000000 -0300
++++ gcc-4.5.1/gcc/config/arm/linux-eabi.h	2010-11-02 15:38:25.792208500 -0300
+@@ -44,7 +44,7 @@
+    The ARM10TDMI core is the default for armv5t, so set
+    SUBTARGET_CPU_DEFAULT to achieve this.  */
+ #undef  SUBTARGET_CPU_DEFAULT
+-#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
++#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9tdmi
+ 
+ /* TARGET_BIG_ENDIAN_DEFAULT is set in
+    config.gcc for big endian configurations.  */
diff --git a/misc/buildroot/toolchain/gcc/4.5.2/830-arm-pr43440.patch b/misc/buildroot/toolchain/gcc/4.5.2/830-arm-pr43440.patch
new file mode 100644
index 000000000..811d1f249
--- /dev/null
+++ b/misc/buildroot/toolchain/gcc/4.5.2/830-arm-pr43440.patch
@@ -0,0 +1,345 @@
+http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43440
+
+--- gcc-4.4.4.orig/gcc/config/arm/aout.h
++++ gcc-4.4.4/gcc/config/arm/aout.h
+@@ -163,34 +163,49 @@
+   {"mvdx12", 39},				\
+   {"mvdx13", 40},				\
+   {"mvdx14", 41},				\
+-  {"mvdx15", 42},				\
+-  {"d0", 63}, {"q0", 63},			\
+-  {"d1", 65},					\
+-  {"d2", 67}, {"q1", 67},			\
+-  {"d3", 69},					\
+-  {"d4", 71}, {"q2", 71},			\
+-  {"d5", 73},					\
+-  {"d6", 75}, {"q3", 75},			\
+-  {"d7", 77},					\
+-  {"d8", 79}, {"q4", 79},			\
+-  {"d9", 81},					\
+-  {"d10", 83}, {"q5", 83},			\
+-  {"d11", 85},					\
+-  {"d12", 87}, {"q6", 87},			\
+-  {"d13", 89},					\
+-  {"d14", 91}, {"q7", 91},			\
+-  {"d15", 93},					\
+-  {"q8", 95},					\
+-  {"q9", 99},					\
+-  {"q10", 103},					\
+-  {"q11", 107},					\
+-  {"q12", 111},					\
+-  {"q13", 115},					\
+-  {"q14", 119},					\
+-  {"q15", 123}					\
++  {"mvdx15", 42}				\
+ }
+ #endif
+ 
++#ifndef OVERLAPPING_REGISTER_NAMES
++#define OVERLAPPING_REGISTER_NAMES       \
++{					 \
++  {"d0", 63, 2},			 \
++  {"d1", 65, 2},			 \
++  {"d2", 67, 2},			 \
++  {"d3", 69, 2},			 \
++  {"d4", 71, 2},			 \
++  {"d5", 73, 2},			 \
++  {"d6", 75, 2},			 \
++  {"d7", 77, 2},			 \
++  {"d8", 79, 2},			 \
++  {"d9", 81, 2},			 \
++  {"d10", 83, 2},			 \
++  {"d11", 85, 2},			 \
++  {"d12", 87, 2},			 \
++  {"d13", 89, 2},			 \
++  {"d14", 91, 2},			 \
++  {"d15", 93, 2},			 \
++  {"q0", 63, 4},			 \
++  {"q1", 67, 4},			 \
++  {"q2", 71, 4},			 \
++  {"q3", 75, 4},			 \
++  {"q4", 79, 4},			 \
++  {"q5", 83, 4},			 \
++  {"q6", 87, 4},			 \
++  {"q7", 91, 4},			 \
++  {"q8", 95, 4},			 \
++  {"q9", 99, 4},			 \
++  {"q10", 103, 4},			 \
++  {"q11", 107, 4},			 \
++  {"q12", 111, 4},			 \
++  {"q13", 115, 4},			 \
++  {"q14", 119, 4},			 \
++  {"q15", 123, 4}			 \
++}
++#endif
++
++
+ #ifndef NO_DOLLAR_IN_LABEL
+ #define NO_DOLLAR_IN_LABEL 1
+ #endif
+--- gcc-4.4.4.orig/gcc/output.h
++++ gcc-4.4.4/gcc/output.h
+@@ -169,6 +169,11 @@
+    Prefixes such as % are optional.  */
+ extern int decode_reg_name (const char *);
+ 
++/* Similar to decode_reg_name, but takes an extra parameter that is a
++   pointer to the number of (internal) registers described by the
++   external name.  */
++extern int decode_reg_name_and_count (const char *, int *);
++
+ extern void assemble_alias (tree, tree);
+ 
+ extern void default_assemble_visibility (tree, int);
+--- gcc-4.4.4.orig/gcc/reginfo.c
++++ gcc-4.4.4/gcc/reginfo.c
+@@ -800,39 +800,44 @@
+ fix_register (const char *name, int fixed, int call_used)
+ {
+   int i;
++  int reg, nregs;
+ 
+   /* Decode the name and update the primary form of
+      the register info.  */
+-
+-  if ((i = decode_reg_name (name)) >= 0)
++  if ((reg = decode_reg_name_and_count (name, &nregs)) >= 0)
+     {
+-      if ((i == STACK_POINTER_REGNUM
++      gcc_assert (nregs >= 1);
++      for (i = reg; i < reg + nregs; i++)
++      {
++        if ((i == STACK_POINTER_REGNUM
+ #ifdef HARD_FRAME_POINTER_REGNUM
+-	   || i == HARD_FRAME_POINTER_REGNUM
++             || i == HARD_FRAME_POINTER_REGNUM
+ #else
+-	   || i == FRAME_POINTER_REGNUM
++             || i == FRAME_POINTER_REGNUM
+ #endif
+-	   )
+-	  && (fixed == 0 || call_used == 0))
+-	{
+-	  static const char * const what_option[2][2] = {
+-	    { "call-saved", "call-used" },
+-	    { "no-such-option", "fixed" }};
++             )
++            && (fixed == 0 || call_used == 0))
++          {
++            static const char * const what_option[2][2] = {
++              { "call-saved", "call-used" },
++              { "no-such-option", "fixed" }};
+ 
+-	  error ("can't use '%s' as a %s register", name,
+-		 what_option[fixed][call_used]);
+-	}
+-      else
+-	{
+-	  fixed_regs[i] = fixed;
+-	  call_used_regs[i] = call_used;
++            error ("can't use '%s' as a %s register", name,
++                   what_option[fixed][call_used]);
++          }
++        else
++          {
++            fixed_regs[i] = fixed;
++            call_used_regs[i] = call_used;
+ #ifdef CALL_REALLY_USED_REGISTERS
+-	  if (fixed == 0)
+-	    call_really_used_regs[i] = call_used;
++             if (fixed == 0)
++               call_really_used_regs[i] = call_used;
+ #endif
+-	}
+-    }
+-  else
++           }
++        }
++      }
++    else
++
+     {
+       warning (0, "unknown register name: %s", name);
+     }
+--- gcc-4.4.4.orig/gcc/stmt.c
++++ gcc-4.4.4/gcc/stmt.c
+@@ -681,13 +681,14 @@
+   for (tail = clobbers; tail; tail = TREE_CHAIN (tail))
+     {
+       const char *regname;
++      int nregs;
+ 
+       if (TREE_VALUE (tail) == error_mark_node)
+ 	return;
+       regname = TREE_STRING_POINTER (TREE_VALUE (tail));
+ 
+-      i = decode_reg_name (regname);
+-      if (i >= 0 || i == -4)
++      i = decode_reg_name_and_count (regname, &nregs);
++      if (i == -4)
+ 	++nclobbers;
+       else if (i == -2)
+ 	error ("unknown register name %qs in %<asm%>", regname);
+@@ -695,14 +696,21 @@
+       /* Mark clobbered registers.  */
+       if (i >= 0)
+         {
+-	  /* Clobbering the PIC register is an error.  */
+-	  if (i == (int) PIC_OFFSET_TABLE_REGNUM)
+-	    {
+-	      error ("PIC register %qs clobbered in %<asm%>", regname);
+-	      return;
+-	    }
++        int reg;
+ 
+-	  SET_HARD_REG_BIT (clobbered_regs, i);
++        for (reg = i; reg < i + nregs; reg++)
++          {
++            ++nclobbers;
++
++            /* Clobbering the PIC register is an error.  */
++            if (reg == (int) PIC_OFFSET_TABLE_REGNUM)
++              {
++                error ("PIC register clobbered by %qs in %<asm%>", regname);
++                return;
++              }
++
++            SET_HARD_REG_BIT (clobbered_regs, reg);
++          }
+ 	}
+     }
+ 
+@@ -1012,8 +1020,9 @@
+       for (tail = clobbers; tail; tail = TREE_CHAIN (tail))
+ 	{
+ 	  const char *regname = TREE_STRING_POINTER (TREE_VALUE (tail));
+-	  int j = decode_reg_name (regname);
+-	  rtx clobbered_reg;
++	  int reg, nregs;
++          int j = decode_reg_name_and_count (regname, &nregs);
++          rtx clobbered_reg;
+ 
+ 	  if (j < 0)
+ 	    {
+@@ -1033,31 +1042,40 @@
+ 	      /* Ignore unknown register, error already signaled.  */
+ 	      continue;
+ 	    }
+-
+-	  /* Use QImode since that's guaranteed to clobber just one reg.  */
+-	  clobbered_reg = gen_rtx_REG (QImode, j);
+-
+-	  /* Do sanity check for overlap between clobbers and respectively
+-	     input and outputs that hasn't been handled.  Such overlap
+-	     should have been detected and reported above.  */
+-	  if (!clobber_conflict_found)
+-	    {
+-	      int opno;
+-
+-	      /* We test the old body (obody) contents to avoid tripping
+-		 over the under-construction body.  */
+-	      for (opno = 0; opno < noutputs; opno++)
+-		if (reg_overlap_mentioned_p (clobbered_reg, output_rtx[opno]))
+-		  internal_error ("asm clobber conflict with output operand");
+-
+-	      for (opno = 0; opno < ninputs - ninout; opno++)
+-		if (reg_overlap_mentioned_p (clobbered_reg,
+-					     ASM_OPERANDS_INPUT (obody, opno)))
+-		  internal_error ("asm clobber conflict with input operand");
++        
++          for (reg = j; reg < j + nregs; reg++)
++            {
++              /* Use QImode since that's guaranteed to clobber just
++               * one reg.  */
++              clobbered_reg = gen_rtx_REG (QImode, reg);
++
++              /* Do sanity check for overlap between clobbers and
++                 respectively input and outputs that hasn't been
++                 handled.  Such overlap should have been detected and
++                 reported above.  */
++              if (!clobber_conflict_found)
++                {
++                  int opno;
++
++                  /* We test the old body (obody) contents to avoid
++                     tripping over the under-construction body.  */
++                  for (opno = 0; opno < noutputs; opno++)
++                    if (reg_overlap_mentioned_p (clobbered_reg,
++                                                 output_rtx[opno]))
++                      internal_error
++                        ("asm clobber conflict with output operand");
++
++                  for (opno = 0; opno < ninputs - ninout; opno++)
++                    if (reg_overlap_mentioned_p (clobbered_reg,
++                                                 ASM_OPERANDS_INPUT (obody,
++                                                                     opno)))
++                      internal_error
++                        ("asm clobber conflict with input operand");
++                }
++  
++              XVECEXP (body, 0, i++)
++                = gen_rtx_CLOBBER (VOIDmode, clobbered_reg);
+ 	    }
+-
+-	  XVECEXP (body, 0, i++)
+-	    = gen_rtx_CLOBBER (VOIDmode, clobbered_reg);
+ 	}
+ 
+       emit_insn (body);
+--- gcc-4.4.4.orig/gcc/varasm.c
++++ gcc-4.4.4/gcc/varasm.c
+@@ -1031,8 +1031,11 @@
+    Prefixes such as % are optional.  */
+ 
+ int
+-decode_reg_name (const char *asmspec)
++decode_reg_name_and_count (const char *asmspec, int *pnregs)
+ {
++  /* Presume just one register is clobbered.  */
++   *pnregs = 1;
++
+   if (asmspec != 0)
+     {
+       int i;
+@@ -1058,6 +1061,25 @@
+ 	    && ! strcmp (asmspec, strip_reg_name (reg_names[i])))
+ 	  return i;
+ 
++#ifdef OVERLAPPING_REGISTER_NAMES
++      {
++      static const struct
++      {
++        const char *const name;
++        const int number;
++        const int nregs;
++      } table[] = OVERLAPPING_REGISTER_NAMES;
++
++      for (i = 0; i < (int) ARRAY_SIZE (table); i++)
++        if (table[i].name[0]
++            && ! strcmp (asmspec, table[i].name))
++          {
++            *pnregs = table[i].nregs;
++            return table[i].number;
++          }
++      }
++#endif /* OVERLAPPING_REGISTER_NAMES */
++
+ #ifdef ADDITIONAL_REGISTER_NAMES
+       {
+ 	static const struct { const char *const name; const int number; } table[]
+@@ -1081,6 +1103,15 @@
+ 
+   return -1;
+ }
++
++int
++decode_reg_name (const char *name)
++{
++   int count;
++   return decode_reg_name_and_count (name, &count);
++}
++
++
+ 
+ /* Return true if DECL's initializer is suitable for a BSS section.  */
+ 
diff --git a/misc/buildroot/toolchain/gcc/4.5.2/850-arm-pr44392.patch b/misc/buildroot/toolchain/gcc/4.5.2/850-arm-pr44392.patch
new file mode 100644
index 000000000..4ad6c448d
--- /dev/null
+++ b/misc/buildroot/toolchain/gcc/4.5.2/850-arm-pr44392.patch
@@ -0,0 +1,70 @@
+>From d0557763b0713a4c006bd2405eede3924569cafd Mon Sep 17 00:00:00 2001
+From: Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
+Date: Mon, 5 Jul 2010 11:28:49 +0100
+Subject: [PATCH 2/2] Fix PR44392
+
+---
+ gcc/config/arm/arm.md |   43 +++++++++++++++++++------------------------
+ 1 files changed, 19 insertions(+), 24 deletions(-)
+
+diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
+index 2096ec6..f0348f3 100644
+--- a/gcc/config/arm/arm.md
++++ b/gcc/config/arm/arm.md
+@@ -11318,34 +11318,29 @@
+ (define_expand "bswapsi2"
+   [(set (match_operand:SI 0 "s_register_operand" "=r")
+   	(bswap:SI (match_operand:SI 1 "s_register_operand" "r")))]
+-"TARGET_EITHER"
++"TARGET_EITHER && (arm_arch6 || !optimize_size)"
+ "
+-  if (!arm_arch6)
+-    {
+-      if (!optimize_size)
+-	{
+-	  rtx op2 = gen_reg_rtx (SImode);
+-	  rtx op3 = gen_reg_rtx (SImode);
++    if (!arm_arch6)
++      {
++	rtx op2 = gen_reg_rtx (SImode);
++	rtx op3 = gen_reg_rtx (SImode);
+ 
+-	  if (TARGET_THUMB)
+-	    {
+-	      rtx op4 = gen_reg_rtx (SImode);
+-	      rtx op5 = gen_reg_rtx (SImode);
++	if (TARGET_THUMB)
++	  {
++	    rtx op4 = gen_reg_rtx (SImode);
++	    rtx op5 = gen_reg_rtx (SImode);
+ 
+-	      emit_insn (gen_thumb_legacy_rev (operands[0], operands[1],
+-					       op2, op3, op4, op5));
+-	    }
+-	  else
+-	    {
+-	      emit_insn (gen_arm_legacy_rev (operands[0], operands[1],
+-					     op2, op3));
+-	    }
++	    emit_insn (gen_thumb_legacy_rev (operands[0], operands[1],
++					     op2, op3, op4, op5));
++	  }
++	else
++	  {
++	    emit_insn (gen_arm_legacy_rev (operands[0], operands[1],
++					   op2, op3));
++	  }
+ 
+-	  DONE;
+-	}
+-      else
+-	FAIL;
+-    }
++	DONE;
++      }
+   "
+ )
+ 
+-- 
+1.6.2
+
diff --git a/misc/buildroot/toolchain/gcc/Config.in b/misc/buildroot/toolchain/gcc/Config.in
index 36c47ea6d..d2b4b69fe 100644
--- a/misc/buildroot/toolchain/gcc/Config.in
+++ b/misc/buildroot/toolchain/gcc/Config.in
@@ -36,6 +36,11 @@ choice
 		select BR2_GCC_SUPPORTS_SYSROOT
 		bool "gcc 4.3.3"
 
+	config BR2_GCC_VERSION_4_5_2
+		depends on !BR2_avr32 && !BR2_nios2 && !BR2_m9s12x
+		select BR2_GCC_SUPPORTS_SYSROOT
+		bool "gcc 4.5.2"
+
 endchoice
 
 config BR2_GCC_SUPPORTS_SYSROOT
@@ -48,6 +53,7 @@ config BR2_GCC_VERSION
 	default "3.4.6"     if BR2_GCC_VERSION_3_4_6
 	default "4.2.4"     if BR2_GCC_VERSION_4_2_4
 	default "4.3.3"     if BR2_GCC_VERSION_4_3_3
+	default "4.5.2"     if BR2_GCC_VERSION_4_5_2
 
 config BR2_GCC_USE_SJLJ_EXCEPTIONS
 	bool "Enable setjmp/longjmp exceptions?"
diff --git a/misc/buildroot/toolchain/gcc/gcc-nuttx-4.x.mk b/misc/buildroot/toolchain/gcc/gcc-nuttx-4.x.mk
index 68f852143..25da37e29 100644
--- a/misc/buildroot/toolchain/gcc/gcc-nuttx-4.x.mk
+++ b/misc/buildroot/toolchain/gcc/gcc-nuttx-4.x.mk
@@ -29,6 +29,11 @@ GCC_DIR:=$(TOOL_BUILD_DIR)/gcc-$(GCC_OFFICIAL_VER)
 GCC_CAT:=$(BZCAT)
 GCC_STRIP_HOST_BINARIES:=true
 
+# gcc 4.6.x quadmath requires wchar
+ifneq ($(BR2_TOOLCHAIN_BUILDROOT_WCHAR),y)
+GCC_QUADMATH=--disable-libquadmath
+endif
+
 #############################################################
 #
 # Setup some initial stuff
@@ -36,8 +41,6 @@ GCC_STRIP_HOST_BINARIES:=true
 #############################################################
 
 GCC_TARGET_LANGUAGES:=c
-GCC_TARGET_PREREQ=
-GCC_STAGING_PREREQ=
 
 ifeq ($(BR2_INSTALL_LIBSTDCPP),y)
 GCC_TARGET_LANGUAGES:=$(GCC_TARGET_LANGUAGES),c++
@@ -61,7 +64,6 @@ ifneq ($(BR2_ENABLE_LOCALE),y)
 GCC_ENABLE_CLOCALE:=--disable-clocale
 endif
 
-
 #############################################################
 #
 # build the gcc compiler
@@ -100,7 +102,7 @@ endif
 endif
 	touch $@
 
-$(GCC_BUILD_DIR)/.configured: $(GCC_DIR)/.patched $(GCC_STAGING_PREREQ)
+$(GCC_BUILD_DIR)/.configured: $(GCC_DIR)/.patched
 	mkdir -p $(GCC_BUILD_DIR)
 	# Important!  Required for limits.h to be fixed.
 	ln -snf ../include/ $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include