How can I do modeling in reverse by parsing a C program and turning it in to a circuit diagram to be displayed.
Example
Except this is psedocode.
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1While this sounds like a potentially interesting question, what you're asking sounds VERY open-ended. – Matt Ball Aug 25 '10 at 03:30
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Unless you have a lot of source code at your command, and/or have a lot of hardware specific information, you're not going to be able to do this for many library calls. – Merlyn Morgan-Graham Aug 25 '10 at 03:32
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4I suspect Googling for "SystemC" will give you some ideas. Like Verilog and VHDL, it was originally targeted primarily as simulation, but there is now a synthesizable subset -- an ability to write code in SystemC (which is really C++ with a class library) and compile it to an actual circuit you can then put into something like a CPLD, FPGA, or possibly an ASIC. – Jerry Coffin Aug 25 '10 at 04:36
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1"Clonsed as not a real question"? That's unreasonable. As a compiler persion, I think about programs as *circuits* of dataflow and operators. See my answer. – Ira Baxter Aug 25 '10 at 10:15
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At a first guess I would say you need to construct a C compiler from scratch (or co-opt one) and inspect the parse tree looking for constructs that you can represent with your list of simple symbols. Once you have done that you need a rendering engine to take the list of detected constructs and lay them out in a pretty picture.
Some random observations:
There are many C concepts that can't be rendered in a simplistic manner (ie pointers)
Making your pic look pretty will be a bitch
Doxygen would be a good place to look for ideas (the do a nice function call structure graph)
Going off on a tangent you might like to look at IEC 61131-3 programming languages for PLCs. These are graphically laid out languages that provide 5 different ways of describing program control and focus heavily on representations of logic
