42 lines
1.7 KiB
Markdown
42 lines
1.7 KiB
Markdown
# JIT-ISS
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A versatile Just-in-time (JIT) compiling instruction set simulator (ISS)
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**JIT-ISS README**
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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.
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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.
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JIT-ISS uses libGIS (https://github.com/vsergeev/libGIS) as well as ELFIO (http://elfio.sourceforge.net/), both under MIT license
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**What's missing**
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* only AVR instruction set implemented but not verified
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**Planned features**
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* add platform peripherals
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* timers
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* gpio
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* ext interrupt registers and functionality
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* and more
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**Quick start**
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* you need to have a decent compiler, make and cmake installed
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* install LLVM 3.9 or 4.0 according to http://apt.llvm.org/
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* download and install SystemC from http://accellera.org/downloads/standards/systemc
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* optionally download and install SystemC Verification Library (SCV) from Accelera into the same location
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* checkout source from git
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* start an out-of-source build like so (e.g. when using LLVM 3.9 and bash)
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```
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cd JIT-ISS
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mkdir build
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cd build
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LLVM_HOME=/usr/lib/llvm-3.9 cmake ..
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make
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```
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* 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
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- SYSTEMC_HOME
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- SYSTEMC_PREFIX
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