Initial commit

.gitignore

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+.DS_Store
+/*.il
+/avr-instr.html
+/blink.S
+/flash.*
+/avr-gdb.cmd
+/main.cpp
+/Debug/
+/Reelease/
+/core
+/*.launch
+/*.csv
+/Release/
+/*.vcd
+/*.ods
+/build/
+/*.logs
+language.settings.xml
+/*.gtkw
+/Debug wo LLVM/
+/atmega.txdb
+/atmega.txlgz
+/atmega.txlog
+/.??*bdb.d.0
+/.??*bdb.i.0
+/.??*bdb.t
+/tmp/
+/test1.elf
+/logs/
+/*.log
+/.gdbinit
+/*.out

.gitmodules

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+[submodule "dbt-core"]
+	path = dbt-core
+	url = https://minres.com/git/SystemC/DBT-Core.git
+[submodule "sc-components"]
+	path = sc-components
+	url = https://minres.com/git/SystemC/SystemC-Components.git
+[submodule "external/easyloggingpp"]
+	path = external/easyloggingpp
+	url = https://github.com/muflihun/easyloggingpp.git
+[submodule "external/elfio"]
+	path = external/elfio
+	url = http://git.code.sf.net/p/elfio/code
+[submodule "external/libGIS"]
+	path = external/libGIS
+	url = https://github.com/vsergeev/libGIS.git

.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>dbt-riscv</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<triggers>clean,full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<triggers>full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.core.ccnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+	</natures>
+</projectDescription>

CMakeLists.txt

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+cmake_minimum_required(VERSION 2.8.12)
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+
+### set the directory names of the submodules
+set(GIT_SUBMODULES elfio libGIS sc-components)
+set(GIT_SUBMODULE_DIR_sc-components .)
+set(GIT_SUBMODULE_DIR_dbt-core .)
+### set each submodules's commit or tag that is to be checked out
+### (leave empty if you want master)
+#set(GIT_SUBMODULE_VERSION_sc-comp 3af6b9836589b082c19d9131c5d0b7afa8ddd7cd)
+
+include(GNUInstallDirs)
+include(cmake/Submodules.cmake)
+
+#enable_testing() 
+
+if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+    set(warnings "-Wall -Wextra -Werror")
+    set(CMAKE_CXX_FLAG_RELEASE "-O2 -DNDEBUG")
+    set(CMAKE_C_FLAG_RELEASE "-O2 -DNDEBUG")
+    set(CMAKE_CXX_FLAG_DEBUG "-Og")
+    set(CMAKE_C_FLAG_DEBUG "-Og")
+elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
+    set(warnings "/W4 /WX /EHsc")
+endif()
+
+FIND_PACKAGE(Threads)
+
+add_subdirectory(external)
+add_subdirectory(dbt-core)
+add_subdirectory(sc-components)
+add_subdirectory(riscv)

LICENSE

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+BSD 3-Clause License
+
+Copyright (c) 2016, MINRES Technologies GmbH
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+# JIT-ISS
+A versatile Just-in-time (JIT) compiling instruction set simulator (ISS)
+
+**JIT-ISS README**
+
+This is currently a proof of concept and work in progress, so use at your own risk. It is currently set-up as an Eclipse CDT project and based on LLVM. To build it you need latest LLVM and Eclipse CDT version 4.6 aka Neon.
+
+To build with SystemC the define WITH_SYSTEMC needs to be set. Then a simple proof-of-concept system is created. Mainly missing are platform peripherals and interrupt handling. It reaches about 5 MIPS in lock-step mode on a MacBook Pro (Core i7-4870HQ@2.5GHz) running in a Docker container.
+
+JIT-ISS uses libGIS (https://github.com/vsergeev/libGIS) as well as ELFIO (http://elfio.sourceforge.net/), both under MIT license 
+
+**What's missing**
+
+* only AVR instruction set implemented but not verified
+
+**Planned features**
+
+* add platform peripherals
+  * timers
+  * gpio
+  * ext interrupt registers and functionality
+* and more
+
+**Quick start**
+
+* you need to have a decent compiler, make and cmake installed
+* install LLVM 3.9 or 4.0 according to http://apt.llvm.org/
+* download and install SystemC from http://accellera.org/downloads/standards/systemc
+  * optionally download and install SystemC Verification Library (SCV) from Accelera into the same location
+* checkout source from git
+* start an out-of-source build like so (e.g. when using LLVM 3.9 and bash)
+```    
+    cd JIT-ISS
+    mkdir build
+    cd build
+    LLVM_HOME=/usr/lib/llvm-3.9 cmake ..
+    make
+```
+* if the SystemC installation is not to be found be cmake you can optionally specify the location by either setting the following environment variables pointing to the installation
+  - SYSTEMC_HOME
+  - SYSTEMC_PREFIX
+

cmake/Common.cmake

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+# Function to link between sub-projects
+function(add_dependent_subproject subproject_name)
+    #if (NOT TARGET ${subproject_name}) # target unknown
+    if(NOT PROJECT_${subproject_name}) # var unknown because we build only this subproject
+        find_package(${subproject_name} CONFIG REQUIRED)
+    else () # we know the target thus we are doing a build from the top directory
+        include_directories(../${subproject_name}/incl)
+    endif ()
+endfunction(add_dependent_subproject)
+
+# Make sure we tell the topdir CMakeLists that we exist (if build from topdir)
+get_directory_property(hasParent PARENT_DIRECTORY)
+if(hasParent)
+    set(PROJECT_${PROJECT_NAME} true PARENT_SCOPE)
+endif()
+
+# Function to link between sub-projects
+function(add_dependent_header subproject_name)
+    include_directories(../${subproject_name}/incl)
+endfunction(add_dependent_header)

cmake/DoxygenTarget.cmake

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+function(PrepareDocTarget)
+
+  # Configure the doxygen config file with current settings:
+  configure_file(documentation-config.doxygen.in ${CMAKE_CURRENT_BINARY_DIR}/documentation-config.doxygen @ONLY)
+
+  # Set the name of the target : "doc" if it doesn't already exist and "doc<projectname>" if it does.
+  # This way we make sure to have a single "doc" target. Either it is the one of the top directory or
+  # it is the one of the subproject that we are compiling alone.
+  set(DOC_TARGET_NAME "doc")
+  if(TARGET doc)
+    set(DOC_TARGET_NAME "doc${PROJECT_NAME}")
+  endif()
+
+  add_custom_target(${DOC_TARGET_NAME} ${TARGET_ALL}
+      ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/documentation-config.doxygen
+      WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+      COMMENT "Generating API documentation using doxygen for ${PROJECT_NAME}" VERBATIM)
+
+  set(INSTALL_DOC_DIR ${CMAKE_BINARY_DIR}/doc/${PROJECT_NAME}/html)
+  file(MAKE_DIRECTORY ${INSTALL_DOC_DIR}) # needed for install
+
+  install(DIRECTORY ${INSTALL_DOC_DIR} DESTINATION share/${PROJECT_NAME}-${VERSION_MAJOR} COMPONENT doc)
+
+endfunction()

cmake/FindSystemC.cmake

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+SET(_SYSTEMC_HINTS
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\SystemC\\2.2;SystemcHome]/include"
+  ${SYSTEMC_PREFIX}/include
+  ${SYSTEMC_PREFIX}/lib
+  ${SYSTEMC_PREFIX}/lib-linux
+  ${SYSTEMC_PREFIX}/lib-linux64
+  ${SYSTEMC_PREFIX}/lib-macos
+  $ENV{SYSTEMC_PREFIX}/include
+  $ENV{SYSTEMC_PREFIX}/lib
+  $ENV{SYSTEMC_PREFIX}/lib-linux
+  $ENV{SYSTEMC_PREFIX}/lib-linux64
+  $ENV{SYSTEMC_PREFIX}/lib-macos
+  $ENV{SYSTEMC_HOME}/include
+  $ENV{SYSTEMC_HOME}/lib
+  $ENV{SYSTEMC_HOME}/lib-linux
+  $ENV{SYSTEMC_HOME}/lib-linux64
+  $ENV{SYSTEMC_HOME}/lib-macos
+  ${CMAKE_INSTALL_PREFIX}/include
+  ${CMAKE_INSTALL_PREFIX}/lib
+  ${CMAKE_INSTALL_PREFIX}/lib-linux
+  ${CMAKE_INSTALL_PREFIX}/lib-linux64
+  ${CMAKE_INSTALL_PREFIX}/lib-macos
+  )
+SET(_SYSTEMC_PATHS
+  /usr/include/systemc
+  /usr/lib
+  /usr/lib-linux
+  /usr/lib-linux64
+  /usr/lib-macos
+  /usr/local/include/sysc
+  /usr/local/lib
+  /usr/local/lib-linux
+  /usr/local/lib-linux64
+  /usr/local/lib-macos
+  )
+FIND_FILE(_SYSTEMC_HEADER_FILE
+  NAMES systemc
+  HINTS ${_SYSTEMC_HINTS}
+  PATHS ${_SYSTEMC_PATHS}
+  PATH_SUFFIXES sysc/kernel
+)
+
+FIND_FILE(_SCV_HEADER_FILE
+  NAMES scv.h
+  HINTS ${_SYSTEMC_HINTS}
+  PATHS ${_SYSTEMC_PATHS}
+  PATH_SUFFIXES sysc/kernel
+)
+
+if(NOT _SYSTEMC_HEADER_FILE STREQUAL _SYSTEMC_HEADER_FILE-NOTFOUND)
+  set(SystemC_FOUND TRUE)
+endif(NOT _SYSTEMC_HEADER_FILE STREQUAL _SYSTEMC_HEADER_FILE-NOTFOUND)
+
+if(NOT _SCV_HEADER_FILE STREQUAL _SCV_HEADER_FILE-NOTFOUND)
+  set(SCV_FOUND TRUE)
+endif(NOT _SCV_HEADER_FILE STREQUAL _SCV_HEADER_FILE-NOTFOUND)
+
+FIND_PATH(SystemC_INCLUDE_DIRS
+  NAMES systemc.h
+  HINTS ${_SYSTEMC_HINTS}
+  PATHS ${_SYSTEMC_PATHS}
+)
+
+FIND_PATH(SystemC_LIBRARY_DIR
+  NAMES libsystemc.a
+  HINTS ${_SYSTEMC_HINTS}
+  PATHS ${_SYSTEMC_PATHS}
+)
+
+FIND_PATH(SCV_INCLUDE_DIRS
+  NAMES scv.h
+  HINTS ${_SYSTEMC_HINTS}
+  PATHS ${_SYSTEMC_PATHS}
+)
+
+FIND_PATH(SCV_LIBRARY_DIRS
+  NAMES libscv.a
+  HINTS ${_SYSTEMC_HINTS}
+  PATHS ${_SYSTEMC_PATHS}
+)
+
+if(SystemC_FOUND)
+        set(SystemC_LIBRARIES systemc)
+        message(STATUS "SystemC header files are taken from ${SystemC_INCLUDE_DIRS}")
+        message(STATUS "SystemC library is taken from ${SystemC_LIBRARY_DIR}")
+        if(SCV_FOUND)
+            set(SCV_LIBRARIES scv)
+            message(STATUS "SCV header files are taken from ${SCV_INCLUDE_DIRS}")
+            message(STATUS "SCV library is taken from ${SCV_LIBRARY_DIRS}")
+        endif(SCV_FOUND)
+endif(SystemC_FOUND)