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# DBT-RISE-RISCV
Am instruction set simulator based on DBT-RISE implementing the RISC-V ISA. The project is hosted at https://git.minres.com/DBT-RISE/DBT-RISE-RISCV .
Core of an instruction set simulator based on DBT-RISE implementing the RISC-V ISA. The project is hosted at https://git.minres.com/DBT-RISE/DBT-RISE-RISCV .
**DBT-RISE-RISCV README**
This library provide the infrastructure to build RISC-V ISS. Currently part of the library are the following implementations adhering to version 2.2 of the 'The RISC-V Instruction Set Manual Volume I: User-Level ISA':
This is work in progress, so use at your own risk. Goal is to implement an open-source ISS which can easily embedded e.g. into SystemC Virtual Prototypes. It used code generation to allow easy extension and adaptation of the used instruction.
The RISC-V ISS reaches about 30MIPS running on Intel Core i7-2600K.
* RV32IMAC
* RV32GC
* RC64I
* RV64GC
The implementation is based on LLVM 4.0. Eclipse CDT 4.7 (Oxygen) is recommended as IDE.
All pass the respective compliance tests. Along with those ISA implementations there is a wrapper implementing the M/S/U modes inlcuding virtual memory management and CSRs as of privileged spec 1.10. The main.cpp in src allows to build a standalone ISS when integrated into a top-level project. For further information please have a look at [https://git.minres.com/VP/RISCV-VP](https://git.minres.com/VP/RISCV-VP).
DBT-RISE-RISCV uses libGIS (https://github.com/vsergeev/libGIS) as well as ELFIO (http://elfio.sourceforge.net/), both under MIT license
Last but not least an SystemC wrapper is provided which allows easy integration into SystemC based virtual platforms.
**Planned features**
Since DBT-RISE uses a generative approch other needed combinations or custom extension can be generated. For further information please contact [info@minres.com](mailto:info@minres.com).
* add platform peripherals beyond programmers view to resemble E300 platform
* ...
* and more
**Quick start**
* you need to have a C++11 capable compiler, make, python, and cmake installed
* install LLVM >= 4.0 according to http://apt.llvm.org/ (if it is not already provided by your distribution e.g by Ubuntu 18.04)
* install conan.io (see also http://docs.conan.io/en/latest/installation.html):
```
pip install conan
```
* setup conan to use the minres repo:
```
conan remote add minres https://api.bintray.com/conan/minres/conan-repo
conan remote add bincrafters https://api.bintray.com/conan/bincrafters/public-conan
```
* checkout source from git
* start an out-of-source build:
```
cd DBT-RISE-RiscV
mkdir build
cd build
cmake ..
cmake --build .
```
* if you encounter issues when linking wrt. c++11 symbols you might have run into GCC ABI incompatibility introduced from GCC 5.0 onwards. You can fix this by adding '-s compiler.libcxx=libstdc++11' to the conan call or changing compiler.libcxx to
```
compiler.libcxx=libstdc++11
```
in $HOME/.conan/profiles/default
** Detailed Setup steps**
*** prepare Ubuntu 18.04 ***
```
sudo apt-get install -y git python-pip build-essential cmake libloki-dev zlib1g-dev libncurses5-dev \
libboost-dev libboost-program-options-dev libboost-system-dev libboost-thread-dev llvm-dev llvm-doc
pip install --user conan
```
*** prepare Fedora 28 ***
```
#prepare system
dnf install @development-tools gcc-c++ boost-devel zlib-devel loki-lib-devel cmake python2 python3 llvm-devel llvm-static
#install conan
pip3 install --user conan
export PATH=${PATH}:$HOME/.local/bin
```
*** Build the ISS ***
```
# configure conan
conan remote add minres https://api.bintray.com/conan/minres/conan-repo
conan remote add bincrafters https://api.bintray.com/conan/bincrafters/public-conan
conan profile new default --detect
# clone and build DBT-RISE-RISCV
git clone --recursive https://github.com/Minres/DBT-RISE-RISCV.git
cd DBT-RISE-RISCV/
git checkout develop
mkdir build;cd build
MAKE_FLAGS="-j4" cmake ..
make -j4
```