102 lines
3.9 KiB
HTML
Executable File
102 lines
3.9 KiB
HTML
Executable File
---
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layout: site
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---
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<div class="row vspace10">
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<div class="span12">
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<h2 class="center">A completely object oriented machine</h2>
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<div>
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<p class="center"><span>
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A fully self describing object system without external dependencies capable of executing dynamic
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object oriented languages like ruby or python.
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</span></p>
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<p class="center"><span>
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<a href="/2015/12/12/the-baton-moves-on-go-go-go.html">Pick up the baton</a>
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</span></p>
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</div>
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</div>
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</div>
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<div class="row vspace20">
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<div class="span4">
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<h2 class="center">Goal</h2>
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<p>
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The goal is to execute object oriented code without external dependencies, on modern hardware.
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</p>
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<p>
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No external dependencies means a system that defines an object oriented system language
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that compiles to assembler. A sort of object version of c, but without using c.
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</p>
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<p>
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It must be possible to compile higher level, dynamic, object oriented languages into this
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language, in a similar way that c++ is compiled into c (at least used to be). So ruby compiles
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to soml which compiles to assembler which compiles to binaries. <b>No interpretation.</b>
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</p>
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<p>
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Most of the system is defined in a higher level language (ruby) and only a small runtime,
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mostly the class sytsem and os acccess, needs to be written in the system language.
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</p>
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</div>
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<div class="span4">
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<h2 class="center">Status</h2>
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<p>
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A first version of the system language is now <a href="/soml/soml.html">done.</a>.
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The staticaly typed language is called SOML (salama object machine language), has a roughly
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ruby-ish syntax while c-ish semantics, and introduces several new concept:
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<ul>
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<li> Object based memory (no global memory) </li>
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<li> Multiple return addresses based on type </li>
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<li> Multiple implementations per function based on type </li>
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<li> Implicit type tracking using adaptive code</li>
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<li> Explicit <a href="/2015/06/20/the-static-call-chain.html">message and frame objects</a>(no stack)</li>
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<li> <a href="http://book.salama-vm.org/register/machine.html">Register machine abstraction</a></li>
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<li> <a href="http://book.salama-vm.org/register/instructions.html">Extensible</a> instruction set</li>
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</ul>
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</p>
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<p>
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An abstract risc like register level defines some abstraction from the actual hardware. The
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compiler compiles to this level, but a mapping to Arm is provided to produce <b>working binaries</b>.
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</p>
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<p>
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There is also an interpreter (mostly for testing) and a basic
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<a href="https://github.com/salama/salama-debugger"> visual debugger</a> which not only helps
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debugging, but also understanding of the machine.
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</p>
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</div>
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<div class="span4">
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<h2 class="center">Docs</h2>
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<p>
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The short introduction is under the <a href="/salama/layers.html">architecture</a> menu.
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</p>
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<p>
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The section on SOML gives an overview of the <a href="/soml/soml.html">system language</a>.
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</p>
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<p>
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The full documentation is in form of a gitbook and can be <a href="/book.html">viewed here.</a>
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</p>
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<p>
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The <a href="/project/motivation.html">about</a> section has some info of when and how this
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started. If you feel like contributing <a href="/contribute.html">read this</a> or write a
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<a href="https://groups.google.com/forum/#!forum/salama-dev"> mail </a>.
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</p>
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<h4 class="center">News</h2>
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<p>
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Last but not least, i try to get recent developments down on paper when they are still fresh.
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</p>
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<p>
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</p>
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</div>
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