Merge branch 'arc-dev' into arc-staging

Author: anthony-kolesov

NEWS

@@ -4,7 +4,19 @@ Major Changes in 2016.09 Release
 Toolchain and IDE Components Versions
 -------------------------------------
 
-* GDB 7.11+
+* Binutils 2.27+ (upstream commit decf5bd and ARC patches)
+* GCC 6.2.1 (upstream commit e061fbe and ARC patches)
+* GDB 7.12 (upstream commit 5f8cf6c and ARC patches)
+* newlib 2.4 (upstream commit e6413b0 and ARC patches)
+* uclibc-ng 1.0.17 (plus few ARC patches)
+* Eclipse Mars (4.5.1) with CDT 8.8.0
+* OpenOCD 0.9+ upstream commit 30203b3d8b, with ARC support.
+
+This release of GNU toolchain and IDE is supported by CGEN IPlib (TCF
+generator) version 1.0.53 and later.
+
+GNU IDE 2016.09 will be supported in next embARC OSP release, planned for
+January 2017.
 
 
 New Features and Enhancements
@@ -13,15 +25,37 @@ New Features and Enhancements
 * Toolchain build scripts
     * Use GNU FTP server to download GMP, MPFR and MPC, update to latest
       versions of those libraries and download .tar.xz files of GMP and MPFR.
+* GCC
+    * Support -fstack-protector and -fstack-protector-all.
+    * Remove support for -mabi option. Now GCC always generates function calls
+      compatible with MetaWare compiler.
+    * Avoid unnecessary dependency of libgcc on newlib.
 * GDB
-    * Update to upstream master (7.11+).
+    * Support multi-target GDB in ARC code. GDB for baremetal targets now can
+      debug Linux targets as well.
+* uClibc
+    * Migrated to uClibc-ng
+* IDE
+    * Migrated to use DSF instead of obsolete CDT for debugging, which brings
+      in multiple usability enhancements.
+    * Updated to latest version of TerminalView plugins.
+    * Detect if projects has been created with an older version of IDE and show
+      user a warning that there could be compatibility issues.
+    * Removed support for -mabi option that has been removed from ARC GCC.
+* OpenOCD
+    * Add support for DCCM version 4.
 * CGEN
     * Removed formal dependency on CGEN repository - it wasn't used anyway.
 
 
 Bugs Fixed in This Release (Summary)
 ------------------------------------
 
+* Newlib
+    * Fixed a bug in implementation for strcmp function for big endian -mcpu=em4
+      targets.
+* IDE
+    * Changing linker options was breaking project building.
 
 
 Major Changes in 2016.03 Release

README.md

@@ -111,7 +111,8 @@ the toolchain. These should be peers of this `toolchain` directory.
         https://github.com/foss-for-synopsys-dwc-arc-processors/binutils-gdb.git gdb
     $ git clone https://github.com/foss-for-synopsys-dwc-arc-processors/newlib.git
     $ git clone https://github.com/foss-for-synopsys-dwc-arc-processors/uClibc.git
-    $ git clone https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
+    $ git clone https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git \
+		linux
 
 The binutils and gdb share the same repository, but must be in separate
 directories, because they use different branches. Option `--reference` passed

build-all.sh

@@ -1001,8 +1001,8 @@ cpus_def=$ARC_GNU/gcc/gcc/config/arc/arc-cpus.def
 if [ -f $cpus_def ]; then
     # New GCC (2016.03 and later).
     # allowed_cpus should be a string wil values delimited by spaces.
-    allowed_cpus=$(awk -v FS="[(, ]+" '/^ARC/{printf " "$2}' $cpus_def)
-    allowed_linux_cpus=$(awk -v FS="[(, ]+" \
+    allowed_cpus=$(awk -v FS="[(, \t]+" '/^ARC/{printf " "$2}' $cpus_def)
+    allowed_linux_cpus=$(awk -v FS="[(, \t]+" \
 	'/^ARC/{if($3=="hs"||$3=="700")printf " "$2}' $cpus_def)
 else
     # Old GCC (2015.12 and earlier)
@@ -1019,7 +1019,7 @@ fi
 if [ "x${uclibc}" = "x--uclibc" ]; then
     if [[ " ${allowed_linux_cpus[*]} " != *" $ISA_CPU "* ]]; then
 	echo "ERROR: uClibc tool chain cannot be built for this CPU family."\
-	     "Choose one of the supprted CPU familes or disable building of"\
+	     "Choose one of the supported CPU familes or disable building of"\
 	     "uClibc tool chain with option --no-uclibc."\
 	     "Supported values are: $allowed_linux_cpus."
 	exit 1

build-elf32.sh

@@ -186,7 +186,7 @@ fi
 # started to cause build issues. As a result it is required to disable them
 # explicitly - otherwise either there would a build failure or a bunch of
 # useless but large files.
-if [ $IS_CROSS_COMPILING ]; then
+if [ $IS_CROSS_COMPILING = yes ]; then
     pch_opt=--disable-libstdcxx-pch
 else
     pch_opt=
@@ -378,7 +378,7 @@ fi
 # Similar to ARC Linux targets, on Windows there are issues with exceptions when
 # GDB is compiled as a C++ applications, so as a temporary measure disable C++
 # when doing canadian cross.
-if [ $IS_CROSS_COMPILING ]; then
+if [ $IS_CROSS_COMPILING = yes ]; then
     cxx_build=--disable-build-with-cxx
 else
     cxx_build=

doc/linux/kernel-build.rst

@@ -62,22 +62,22 @@ Check `Buildroot downloads page <http://buildroot.org/download.html>` for
 latest release. This guide further assumes latest snapshot. Get Buildroot
 sources::
 
-    $ mkdir arc-2016.03-linux-guide
-    $ cd arc-2016.03-linux-guide
+    $ mkdir arc-2016.09-linux-guide
+    $ cd arc-2016.09-linux-guide
     $ wget https://buildroot.org/downloads/buildroot-snapshot.tar.bz2
     $ tar xaf buildroot-snapshot.tar.bz2
 
 To build Linux and rootfs Buildroot should be configured. For the purpose of
 this guide, a custom "defconfig" file will be created and then will be used to
 configure Buildroot. Custom "defconfig" file can be located anywhere and have
-any name. For example it can be ``arc-2016.03-linux-guide/hs_defconfig``.
+any name. For example it can be ``arc-2016.09-linux-guide/hs_defconfig``.
 Contents of this file should be following::
 
     BR2_arcle=y
     BR2_archs38=y
     BR2_TOOLCHAIN_EXTERNAL=y
     BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
-    BR2_TOOLCHAIN_EXTERNAL_URL="http://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/download/arc-2016.03/arc_gnu_2016.03_prebuilt_uclibc_le_archs_linux_install.tar.gz"
+    BR2_TOOLCHAIN_EXTERNAL_URL="http://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/download/arc-2016.09-rc1/arc_gnu_2016.09-rc1_prebuilt_uclibc_le_archs_linux_install.tar.gz"
     BR2_TOOLCHAIN_EXTERNAL_GCC_4_8=y
     BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_6=y
     BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
@@ -97,12 +97,12 @@ Important notes about modifying Buildroot defconfig:
 * ``BR2_TOOLCHAIN_EXTERNAL_URL`` should point to a valid URL of GNU Toolchain
   for ARC distributable.
 * ``BR2_TOOLCHAIN_EXTERNAL_HEADERS_X_XX`` should be aligned to Linux headers
-  version used for the toolchain build. It is 4.6 for toolchain release
-  2016.03, it is 3.18 for toolchain releases 2015.06 and 2015.12, it is 3.13
-  for earlier toolchain versions. This parameter identifies version of Linux
-  that was used to build toolchain and is not related to version of Linux that
-  will be *built by* toolchain or where applications compiled by this toolchain
-  will run.
+  version used for the toolchain build. It is 4.8 for toolchain release
+  2016.09, it is 4.6 for toolchain release 2016.03, it is 3.18 for toolchain
+  releases 2015.06 and 2015.12, it is 3.13 for earlier toolchain versions. This
+  parameter identifies version of Linux that was used to build toolchain and is
+  not related to version of Linux that will be *built by* toolchain or where
+  applications compiled by this toolchain will run.
 * Other Linux kernel defconfigs can be used.
 * Building GDB or GDBserver is not necessary.
 
@@ -120,7 +120,7 @@ To build Linux kernel image using that defconfig::
     $ make
 
 After that there will be Linux kernel image file
-``arc-2016.03-linux-guide/output/images/vmlinux``.
+``arc-2016.09-linux-guide/output/images/vmlinux``.
 
 
 Running on nSIM
@@ -129,7 +129,7 @@ Running on nSIM
 Linux configuration in the provided Buildroot defconfig is for the standalone
 nSIM. This kernel image can be run directly on nSIM, without any other
 additional software. Assuming current directory is
-``arc-2016.03-linux-guide``::
+``arc-2016.09-linux-guide``::
 
     $ $NSIM_HOME/bin/nsimdrv -propsfile archs38.props output_hs/images/vmlinux
 
@@ -183,9 +183,9 @@ Process of building kernel for ARC 770 is similar to what is for ARC HS. It is
 required only to change several option in Buildroot defconfig:
 
   * ``BR2_archs38=y`` with ``BR2_arc770d=y``
-  * ``BR2_TOOLCHAIN_EXTERNAL_URL="http://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/download/arc-2016.03/arc_gnu_2016.03_prebuilt_uclibc_le_archs_linux_install.tar.gz"``
+  * ``BR2_TOOLCHAIN_EXTERNAL_URL="http://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/download/arc-2016.09-rc1/arc_gnu_2016.09-rc1_prebuilt_uclibc_le_archs_linux_install.tar.gz"``
     with
-    ``BR2_TOOLCHAIN_EXTERNAL_URL="http://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/download/arc-2016.03/arc_gnu_2016.03_prebuilt_uclibc_le_arc700_linux_install.tar.gz"``
+    ``BR2_TOOLCHAIN_EXTERNAL_URL="http://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/download/arc-2016.09-rc1/arc_gnu_2016.09-rc1_prebuilt_uclibc_le_arc700_linux_install.tar.gz"``
   * ``BR2_LINUX_KERNEL_DEFCONFIG="nsim_hs"`` with
     ``BR2_LINUX_KERNEL_DEFCONFIG="nsim_700"``
 
@@ -230,7 +230,7 @@ With those changes Buildroot defconfig for ARC HS VDK is::
     BR2_archs38=y
     BR2_TOOLCHAIN_EXTERNAL=y
     BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
-    BR2_TOOLCHAIN_EXTERNAL_URL="http://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/download/arc-2016.03/arc_gnu_2016.03_prebuilt_uclibc_le_archs_linux_install.tar.gz"
+    BR2_TOOLCHAIN_EXTERNAL_URL="http://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/download/arc-2016.09-rc1/arc_gnu_2016.09-rc1_prebuilt_uclibc_le_archs_linux_install.tar.gz"
     BR2_TOOLCHAIN_EXTERNAL_GCC_4_8=y
     BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_6=y
     BR2_TOOLCHAIN_EXTERNAL_LOCALE=y