Merge branch 'arc-dev' into arc-staging

Author: anthony-kolesov

NEWS

@@ -1,3 +1,77 @@
+Major Changes in 2016.03 Release
+================================
+
+Toolchain and IDE Components Versions
+-------------------------------------
+
+* Binutils v2.26+ (upstream commit id 202ac19 with additional ARC patches)
+* GCC v4.8.5
+* GDB 7.10
+* newlib v2.3
+* uclibc (upstream commit 94340ce with backported patches from uClibc-ng)
+* 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.
+
+
+New Features and Enhancements
+-----------------------------
+
+* Binutils
+    * Binutils for ARC has been rewritten from the scratch, based on upstream
+      release 2.26.
+* GCC
+    * New values for `-mcpu` option and new set of multilib libraries built for
+      those processor configurations.
+    * Support for text values of `-mmpy-option`, same as in hardware IP
+      libraries.
+    * Fixed runtime issues on 32-bit hosts.
+* Eclipse IDE
+    * Support for new GCC `-mcpu` option values.
+    * If TCF is used, then options in GUI are now synchronized with it.
+    * Now it is possible to select current working directory when using nSIM.
+* OpenOCD
+    * Added a separate configuration file for ARC EM Starter Kit v2.2, which
+      requries reduced JTAG Frequency of 5 MHz, compared to 7.5 MHz that has
+      been used for versions 2.0 and 2.1.
+* Toolchain build scripts
+    * Option `--cpu` now accepts different values that are supported by GCC as
+      values for `-mcpu` option. List of supported values is dynamic and
+      evaluated based on GCC configuration.
+    * Support for building of native (self-hosting) Linux/uClibc toolchain.
+    * New option of build-all.sh script:
+	* `--native` - specifies whether script is building native
+	  (self-hosting) toolchain. That affects location of header files and
+	  standard library archvies. It is still required to pass `--host`
+	  option to specify cross-toolchain to build native toolchain.
+
+
+Bugs Fixed in This Release (Summary)
+------------------------------------
+
+* GCC
+    * There was no multilib configuration without multiplier for ARC 700, EM
+      and HS processors.
+* Newlib
+    * Fixed a bug in crt0.S file that was using optional ASR a,b,u6 instruction
+      without checking if barrel shifter is enabled.
+* Eclipse IDE
+    * Path to standard headers was calculated improperly for big-endian
+      projects.
+    * Fixed an inconsistency where if toolchain is present both in the PATH and
+      relatively to eclipse installation, compiler plugin would use one
+      toolchain from ../bin to build project, but would use toolchain from the
+      PATH to get information about standard headers.
+* OpenOCD
+    * OpenOCD didn't worked with HS36 in AXS103.
+* Toolchain build scripts
+    * XML files for Ashling Opella-XD GDBserver were broken for Windows systems.
+    * Memory maps for AXS10x boards were broken - there was a link error when
+      using them.
+
+
 Major changes in 2015.12 release
 ================================
 

README.md

@@ -125,10 +125,10 @@ If current working directory is not a "toolchain" directory, then change to it:
     $ cd toolchain
 
 This repository can be checked out to a specific GNU Toolchain for ARC release
-by specifying a particular release tag, for example for 2015.12 release that
+by specifying a particular release tag, for example for 2016.03 release that
 would be:
 
-    $ git checkout arc-2015.12
+    $ git checkout arc-2016.03
 
 
 Building the Toolchain
@@ -203,57 +203,50 @@ will not be overridden.
 
 ### Build options examples
 
-Build default toolchain, bare metal toolchain will support all ARC cores,
-while Linux toolchain will support ARC 700:
+This command will build default toolchain - bare metal toolchain will support
+all ARC cores, while Linux toolchain will support ARC 700:
 
     $ ./build-all.sh --install-dir $INSTALL_ROOT
 
-Build toolchain for ARC 700 Linux development:
+This command will build bare metal toolchain for ARC 700 Linux development:
 
     $ ./build-all.sh --no-elf32 --install-dir $INSTALL_ROOT
 
-Build toolchain for ARC HS Linux development:
+This command will build bare metal toolchain for ARC HS Linux development:
 
-    $ ./build-all.sh --no-elf32 --cpu hs38 --install-dir $INSTALL_ROOT
 
-Build bare metal toolchain for ARC EM cores:
+    $ ./build-all.sh --no-elf32 --cpu hs38_linux --install-dir $INSTALL_ROOT
 
-    $ ./build-all.sh --no-uclibc --install-dir $INSTALL_ROOT --cpu em4_dmips --no-multilib
-
-Build bare metal toolchain for ARC EM5D in the ARC EM Starter Kit 2.0:
+This command will build bare metal toolchain for ARC EM7D in the ARC EM Starter
+Kit 2.2:
 
     $ ./build-all.sh --no-uclibc --install-dir $INSTALL_ROOT --no-multilib \
-      --cpu em4_dmips --target-cflags "-O2 -g -mcode-density -mno-div-rem -mswap -mnorm \
-      -mmpy-option=6 -mbarrel-shifter"
+      --cpu em4_dmips
 
-Build bare metal toolchain for ARC EM7D in the ARC EM Starter Kit 2.0
-(EM7D_FPU is similiar, but with -mfpu=fpuda):
+This command will build bare metal toolchain for ARC EM9D in the ARC EM Starter
+Kit 2.2:
 
     $ ./build-all.sh --no-uclibc --install-dir $INSTALL_ROOT --no-multilib \
-      --cpu em4_dmips --target-cflags "-O2 -g -mcode-density -mno-div-rem -mswap \
-      -mnorm -mmpy-option=6 -mbarrel-shifter \
-      --param l1-cache-size=16384 --param l1-cache-line-size=32"
+      --cpu em4_fpus --target-cflags "-O2 -g -mfpu=fpus_all"
 
-Build bare metal toolchain for ARC EM4 in the ARC EM Starter Kit 1.1:
+This command will build bare metal toolchain for ARC EM11D in the ARC EM Starter
+Kit 2.2:
 
     $ ./build-all.sh --no-uclibc --install-dir $INSTALL_ROOT --no-multilib \
-      --cpu em4_dmips --target-cflags "-O2 -g -mcode-density -mdiv-rem -mswap \
-      -mnorm -mmpy-option=6 -mbarrel-shifter"
+      --cpu em4_fpuda --target-cflags "-O2 -g -mfpu=fpuda_all"
 
-Build bare metal toolchain for ARC EM6 in the ARC EM Starter Kit 1.1:
+Build bare metal toolchain for ARC EM4 and EM6 in the ARC EM Starter Kit 1.1:
 
     $ ./build-all.sh --no-uclibc --install-dir $INSTALL_ROOT --no-multilib \
-      --cpu em4_dmips --target-cflags "-O2 -g -mcode-density -mdiv-rem -mswap \
-      -mnorm -mmpy-option=6 -mbarrel-shifter \
-      --param l1-cache-size=32768 --param l1-cache-line-size=128"
+      --cpu em4_dmips
 
 To build native ARC Linux toolchain (toolchain that runs on same system as for
 which it compiles, so host == target) it is required first to build a normal
 cross toolchain for this system. Then it should be added it to the PATH, after
 that `build-all.sh` can be run:
 
     $ ./build-all.sh --no-elf32 --install-dir $INSTALL_ROOT_NATIVE \
-      --cpu hs38 --native --host arc-snps-linux-uclibc
+      --cpu hs38_linux --native --host arc-snps-linux-uclibc
 
 In this command line, argument to `--cpu` option must correspond to the target
 CPU and argument to `--host` options depends on whether this is a big or little
@@ -483,12 +476,14 @@ follows:
     $ arc-elf32-gcc -mcpu=arcem -g --specs=nsim.specs simple.c
     $ arc-elf32-gdb --quiet a.out
     (gdb) set tdesc filename toolchain/extras/opella-xd/opella-arcem-tdesc.xml
-    (gdb) set target remote :2331
+    (gdb) target remote :2331
     (gdb) load
     (gdb) break main
     (gdb) continue
     (gdb) break exit
     (gdb) continue
+    # Register R0 contains exit code of function main()
+    (gtb) info reg r0
     (gdb) quit
 
 Similar to OpenOCD hostlink is not available in GDB with Ashling Opella-XD.

build-all.sh

@@ -187,9 +187,11 @@
 
 # --uclibc-defconfig <defconfig>
 
-#     If specified, the defconfig used to build uClibc will be
-#     <defconfig>. The default is defconfig for v1 ISA and arcv2_defconfig for
-#     v2 ISA.
+#     If specified, the defconfig used to build uClibc will be <defconfig>. The
+#     default is defconfig for ARC 700 and arcv2_defconfig for ARC HS - this is
+#     decided based on value of --cpu option. If CPU is "arc700", then
+#     defconfig for ARC 700 will be used. In all other cases defconfig for ARC
+#     HS will be used.
 
 # --sim | --no-sim
 
@@ -825,11 +827,10 @@ fi
 # Default defconfig for uClibc, only if it has not already been set
 if [ "x${UCLIBC_DEFCFG}" = "x" ]
 then
-    if [ "xarchs" = "x${ISA_CPU}" ]
-    then
-        UCLIBC_DEFCFG=arcv2_defconfig
-    else
+    if [ "$ISA_CPU" = arc700 ]; then
         UCLIBC_DEFCFG=defconfig
+    else
+        UCLIBC_DEFCFG=arcv2_defconfig
     fi
 fi
 

config/arc-dev.sh

@@ -4,4 +4,4 @@ gcc=gcc:arc-4.8-dev
 gdb=gdb:arc-7.10
 newlib=newlib:arc-2.3
 uclibc=uClibc:arc-mainline-dev
-linux=linux:arc-3.18
+linux=linux:arc-next

dejagnu/baseboards/arc-sim-nsimdrv.exp

@@ -30,7 +30,11 @@ load_generic_config "sim"
 load_base_board_description "basic-sim"
 
 # Any multilib options are set in an environment variable.
-process_multilib_options "$env(ARC_MULTILIB_OPTIONS)"
+if { [ info exists env(ARC_MULTILIB_OPTIONS) ] } {
+    process_multilib_options "$env(ARC_MULTILIB_OPTIONS)"
+} else {
+    process_multilib_options ""
+}
 
 # We need extra procedures to determine for which cpu we simulate.
 search_and_load_file "library file" "tool-extra.exp" ${boards_dir}
@@ -39,7 +43,9 @@ set xldflags "-Wl,--defsym=__DEFAULT_HEAP_SIZE=256m \
     -Wl,--defsym=__DEFAULT_STACK_SIZE=1024m"
 
 # Set common defaults
-set nsim_flags {}
+if ![info exists nsim_flags] {
+    set nsim_flags {}
+}
 lappend nsim_flags \
 	-on nsim_isa_spfp \
 	-on nsim_isa_dpfp \

doc/release.rst

@@ -66,8 +66,7 @@ Copy here extracted FTD2xx drivers, like::
 
 Get Makefile.openocd from toolchain repository::
 
-    $ wget https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/\
-      blob/arc-dev/windows-installer/Makefile.openocd
+    $ wget https://raw.githubusercontent.com/foss-for-synopsys-dwc-arc-processors/toolchain/arc-dev/windows-installer/Makefile.openocd
 
 Get source and checkout to tag::
 

extras/arc-tcf-gcc

@@ -125,7 +125,7 @@ sub processXML
     # Parse the linker file
     my $sn = '/config_list/configuration[@name="gnu_linker_command_file"]';
     parseXML ($tcf, $sn);
-    my $cmdline = " -Wl,-marcv2elfb -L" . $dirname . " ";
+    my $cmdline = " -Wl,-marcv2elfx -L" . $dirname . " ";
 
 
     # Parse the compiler options

windows-installer/Makefile.openocd

@@ -46,18 +46,14 @@ libusb_install/lib/libusb-1.0.a: libusb-$(LIBUSB_VERSION)
 	$(MAKE) && \
 	$(MAKE) install \
 
-# ftd2xx directory must contains FTD2XX drivers. Process of their preparation
-# is not automated yet.
 openocd-config: openocd/Makefile
 
-openocd/Makefile: libusb_install/lib/libusb-1.0.a ftd2xx openocd
+openocd/Makefile: libusb_install/lib/libusb-1.0.a openocd
 	cd openocd && ./bootstrap
 	cd openocd && \
 	PKG_CONFIG_PATH=$(abspath libusb_install)/lib/pkgconfig \
 	./configure --enable-ftdi --host=$(HOST) --disable-werror \
 	    --disable-shared --enable-static \
-	    --enable-legacy-ft2232_ftd2xx \
-	    --with-ftd2xx-win32-zipdir=$(abspath ftd2xx) \
 	    --prefix=$(INSTALL_DIR) \
 	    PKG_CONFIG=pkg-config
 
@@ -68,7 +64,6 @@ openocd/src/openocd.exe: openocd/Makefile
 
 openocd-install: openocd-build
 	$(MAKE) -C openocd install install-pdf
-	cp -a ftd2xx/i386/*.dll $(INSTALL_DIR)/bin
 
 #
 # Clean