ppisa
commented
3 years ago Hello Kostas,
the first it is great that you like the program and I hope that it servers you well to study how simple and pipelined processor works.
In general, cooperation, extensions and sample are welcomed, there is in the fact separate repository to collect examples for QtMips https://github.com/cvut/QtMips-Playground and we have examples from our lectures and templates for students tasks in the subject related repository https://gitlab.fel.cvut.cz/b35apo/stud-support directory seminaries/binrep/qtmips_binrep and master/seminaries/qtmips.
As for the branch prediction visualization, it would be great enhancements. We use MARS emulator to demonstrate this for now. On the other hand, on MIPS with delay slot and branches resolved in decode state there would be no real speedup when branch predictor is used. But for education it has purpose.
On the other hand, we are limited in time and our long term goal is to demonstrate CPU architectures principles on open RISC-V architecture. I would like to start from it even in 2017 when we started QtMips, but my team has been limited and I know that switch all lectures and materials to RISC-V is impossible at that time so we decided to continue with MIPS, defacto standard for education at that time. There we are now. But I would like to switch to RISC-V for 2021/2022 year. Two our excellent students works on preparation for that switch in their fork https://github.com/hollmmax/QtMips and when the memory model is updated and tested on MIPS then we switch architecture and start that as base for RISC-V project https://github.com/cvut/qtrvsim .
I need to reveal this plan to you because our plan is to switch QtMips in (mostly) maintenance mode now. In a long term, we consider even to update it back from RISC-V version if time/enthusiasts/students appear.
So if you changes are clean, they will be accepted but we have limited time for this project now, priority is RISC-V kickoff with same features. We have considered to combine both architectures in single program, but it would make program much more complex and barrier for new students to enter into its development, so the decision is simple simulator architecture only for single target.
My default build system is Debian. The next simple command sequence should work when dependencies are resolved
git clone git@github.com:cvut/QtMips.git
cd QtMips
/usr/lib/x86_64-linux-gnu/qt5/bin/qmake
makeAnother option is to build package
git clone git@github.com:cvut/QtMips.git
cd QtMips
dpkg-buildpackageAs for interactive build in QtCreator, my setup is
Build target is set to Debug/qtmips_gui
As for the emscripten build, I use own Qt library build and in this case I use simplified libelf included directly into QtMips, see rebased branch libelf-included , because setup matching separate libelf export from emscripten environment did not work for me well.
Then I build the QtMips for emscripten from qmake qtmips.pro file from clean build directory by
/opt/qt5/wasm-emscripten/qt/bin/qmake "CONFIG+=static" "CONFIG+=staticlib" -recursive ../QtMips/qtmips.proI have again my own cross-build of Windows Qt5 on my Debian GNU/Linux system build by i686-w64-mingw32. I use next config for out of the source tree Windows build
/usr/i686-w64-mingw32/qt/bin/qmake "CONFIG+=static" "CONFIG+=staticlib" -recursive ../QtMips/qtmips.proSo I hope these hints helps. Send some long in case error. For your qtcreator setup, are you using standard install from Ubuntu package or downloaded binary install? I am not expert for Qt, but if you have problems I would discuss the advice with my colleague who is expert for Qt and works on large Qt based applications https://github.com/silicon-heaven and other personal ones https://github.com/fvacek so we should be able to provide you hints.
Best wishes,
Pavel
kchasialis
Hello, my plan is to extend the functionality of this tool (by adding branch predictors and L2 cache for start) but I have issues in loading and building the project on QtCreator and start developing from there while also keeping the current features intact.
To give you a better idea so you can help me further, what I tried to do is this :
I moved "qtmips_asm, qtmips_gui, qtmips_osemu, qtmips_machine" into the project directory and configured the .pro files accordingly. (I want to load the gui version for now)
I installed emscripten by following the instructions here : https://emscripten.org/docs/getting_started/downloads.html
and also installed elfutils using apt-get.
My Kits configurations are the following :
My Compilers configurations are the following :
My Qt Versions configurations are the following :
My CMake configurations are the following :
The build errors that I am getting are the following :
Any help would be much appreciated, I have tried many things that didn't work.
Thanks in advance, Kostas.