89 lines
3.4 KiB
HTML
Executable File
89 lines
3.4 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 virtual machine</h2>
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<div>
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<p class="center"><span>
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Leaving the old (c) world behind to go where no machine has gone before (or something like that)
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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">Architecture</h2>
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<p>
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Salama is maybe the first successful attempt at writing a virtual machine without the use
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of c or c tools.
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It defines and implements an object virtual machine completely in object oriented terms,
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using ruby to bootstrap itself.
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</p>
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<p>
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Just some of the features, most of which would not be possible in c:
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<ul>
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<li> Linked-List, not stack, based </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></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/object/instructions.html">Extensible</a> instruction set</li>
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</ul>
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Salama defines is's own system language (phisol) to bridge the gap between the higher language
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(ruby) and assembler. Both phisol and assembler can be seens as layers towrds the final
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binary executables</li>
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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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While the project is just getting on two years, it is starting to settle conceptually,
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progress smoothly, and produce <b>working binaries</b>.
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</p>
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<p>
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In numbers, there are over <b>1000 commits</b>, 6 sub-projects, more than 10k lines of code
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and well over 600 tests.
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</p>
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<p>
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Maybe more importantly there is <a href"/book.html">good documentation</a> along with an
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evolved idea of how most of the difficult issues are solved. So while the executables are
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still of the "Hello world" quality, there are no coneptual problems anymore.
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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 full documentation is in form of a gitbook and can be <a href="/book.html">viewed</a> ,
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and <a href="https://github.com/salama/object-machine">edited</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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<p>
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Last but not least, i try to get recent developments down on paper when they are still
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fresh, which you can read in the <a href="{{ site.posts.first.url }}">news</a> section.
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</p>
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<p>
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<a href="{{ site.posts.first.url }}">{{ site.posts.first.title }} </a>
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</p>
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</div>
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</div>
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