toolchain/arc: update to the most recent release arc-2016.09

arc-2016.09 is the most recent toolchain for ARC cores and
it is based on top of upstream Binutils 2.27 and GCC 6.2.1.

With updated major version of GCC we copied all GCC 6.x patches
for ARC as well as Bintils 2.27 patches.

Note that toochain sports ARCv4 ABI and so must be used
with 4.8+ Linux kernels. Even though it will build v4.4 kernel
perfectly fine on attempt to run user-space apps they won't
work with older kernel. That said previuosly sent RFC patches with
Linux kernel update are required:
 [1] https://patchwork.ozlabs.org/patch/726686/
 [2] https://patchwork.ozlabs.org/patch/726687/

Signed-off-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>

6 files changed, 54 insertions, 26 deletions

diff --git a/toolchain/binutils/Config.in b/toolchain/binutils/Config.in
index ccf096d3d8..318a13804f 100644
--- a/toolchain/binutils/Config.in
+++ b/toolchain/binutils/Config.in
@@ -3,7 +3,7 @@
 choice
 	prompt "Binutils Version" if TOOLCHAINOPTS
 	default BINUTILS_USE_VERSION_2_27 if !arc
-	default BINUTILS_USE_VERSION_2_26_ARC if arc
+	default BINUTILS_USE_VERSION_2_27_ARC if arc
 	help
 	  Select the version of binutils you wish to use.
 
@@ -17,10 +17,10 @@ choice
 		bool "Binutils 2.28"
 		select BINUTILS_VERSION_2_28
 
-	config BINUTILS_USE_VERSION_2_26_ARC
+	config BINUTILS_USE_VERSION_2_27_ARC
 		depends on arc
-		bool "ARC binutils 2.26"
-		select BINUTILS_VERSION_2_26_ARC
+		bool "ARC binutils 2.27"
+		select BINUTILS_VERSION_2_27_ARC
 
 endchoice
 
diff --git a/toolchain/binutils/Config.version b/toolchain/binutils/Config.version
index 66e1ee2c78..8a166e1aa3 100644
--- a/toolchain/binutils/Config.version
+++ b/toolchain/binutils/Config.version
@@ -5,7 +5,7 @@ config BINUTILS_VERSION_2_27
 config BINUTILS_VERSION_2_28
 	bool
 
-config BINUTILS_VERSION_2_26_ARC
+config BINUTILS_VERSION_2_27_ARC
 	default y if (!TOOLCHAINOPTS && arc)
 	bool
 
@@ -13,5 +13,4 @@ config BINUTILS_VERSION
 	string
 	default "2.27"		       if BINUTILS_VERSION_2_27
 	default "2.28"		       if BINUTILS_VERSION_2_28
-	default "arc-2016.03"          if BINUTILS_VERSION_2_26_ARC
-
+	default "arc-2016.09"          if BINUTILS_VERSION_2_27_ARC
diff --git a/toolchain/binutils/Makefile b/toolchain/binutils/Makefile
index 812a2ee1fb..9bdd68f6ac 100644
--- a/toolchain/binutils/Makefile
+++ b/toolchain/binutils/Makefile
@@ -21,12 +21,12 @@ ifeq ($(PKG_VERSION),2.28)
   PKG_HASH:=6297433ee120b11b4b0a1c8f3512d7d73501753142ab9e2daa13c5a3edd32a72
 endif
 
-ifneq ($(CONFIG_BINUTILS_VERSION_2_26_ARC),)
-  PKG_SOURCE_URL:=https://github.com/foss-for-synopsys-dwc-arc-processors/binutils-gdb/archive/arc-2016.03/
-  PKG_REV:=2016.03
-  PKG_SOURCE:=$(PKG_NAME)-arc-$(PKG_REV).tar.gz
-  PKG_HASH:=6583a0cd5c7251dc895a47c797a9b011e466c23377d2ca7548a707fdb918fba1
-  BINUTILS_DIR:=$(PKG_NAME)-gdb-arc-$(PKG_REV)
+ifneq ($(CONFIG_BINUTILS_VERSION_2_27_ARC),)
+  PKG_REV:=arc-2016.09-release
+  PKG_SOURCE_URL:=https://github.com/foss-for-synopsys-dwc-arc-processors/binutils-gdb/archive/$(PKG_REV)/
+  PKG_SOURCE:=$(PKG_NAME)-$(PKG_REV).tar.gz
+  PKG_HASH:=c6de8aedb7568406d784295476de9139a5e351e970e18b602e0037439b3a7b4b
+  BINUTILS_DIR:=$(PKG_NAME)-gdb-$(PKG_REV)
   HOST_BUILD_DIR:=$(BUILD_DIR_TOOLCHAIN)/$(BINUTILS_DIR)
 endif
 
diff --git a/toolchain/binutils/patches/arc-2016.03/200-arc-fix-target-mask.patch b/toolchain/binutils/patches/arc-2016.03/200-arc-fix-target-mask.patch
deleted file mode 100644
index 7e51d588ae..0000000000
--- a/toolchain/binutils/patches/arc-2016.03/200-arc-fix-target-mask.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/bfd/config.bfd b/bfd/config.bfd
-index 5145d4a..a9c9c99 100644
---- a/bfd/config.bfd
-+++ b/bfd/config.bfd
-@@ -275,7 +275,7 @@ case "${targ}" in
-     targ_defvec=am33_elf32_linux_vec
-     ;;
- 
--  arc*-*-elf* | arc*-*-linux-uclibc*)
-+  arc*-*-elf* | arc*-*-linux-*)
-     targ_defvec=arc_elf32_le_vec
-     targ_selvecs=arc_elf32_be_vec
-     ;;
diff --git a/toolchain/binutils/patches/arc-2016.09-release/300-001_ld_makefile_patch.patch b/toolchain/binutils/patches/arc-2016.09-release/300-001_ld_makefile_patch.patch
new file mode 100644
index 0000000000..e4cec7f69e
--- /dev/null
+++ b/toolchain/binutils/patches/arc-2016.09-release/300-001_ld_makefile_patch.patch
@@ -0,0 +1,22 @@
+--- a/ld/Makefile.am
++++ b/ld/Makefile.am
+@@ -57,7 +57,7 @@ endif
+ # 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@
+--- a/ld/Makefile.in
++++ b/ld/Makefile.in
+@@ -451,7 +451,7 @@ AM_CFLAGS = $(WARN_CFLAGS) $(ELF_CLFAGS)
+ # 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 = $(BASEDIR)/include
diff --git a/toolchain/binutils/patches/arc-2016.09-release/300-012_check_ldrunpath_length.patch b/toolchain/binutils/patches/arc-2016.09-release/300-012_check_ldrunpath_length.patch
new file mode 100644
index 0000000000..95d3f75b85
--- /dev/null
+++ b/toolchain/binutils/patches/arc-2016.09-release/300-012_check_ldrunpath_length.patch
@@ -0,0 +1,20 @@
+--- a/ld/emultempl/elf32.em
++++ b/ld/emultempl/elf32.em
+@@ -1244,6 +1244,8 @@ fragment <<EOF
+ 	      && command_line.rpath == NULL)
+ 	    {
+ 	      lib_path = (const char *) getenv ("LD_RUN_PATH");
++	      if ((lib_path) && (strlen (lib_path) == 0))
++	      	lib_path = NULL;
+ 	      if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
+ 						      force))
+ 		break;
+@@ -1525,6 +1527,8 @@ gld${EMULATION_NAME}_before_allocation (
+   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)