The documents John mentions are highly useful. I'm actually doing this
- and find the source in various other architecture subtrees to be
invaluable - lib/Target/<target>. Our machine is a 64-bit RISC machine,
so reading the PPC/Mips/Sparc code is useful. For some instructions,
ARM has been useful (pre/post increment/decrement).
If this is a commercial effort, Synopsys makes a tool called Processor
Designer which can take you quite a ways to doing this.
Best of Luck,
Richard Gorton
www.cog-e.com
On 6/6/2014 10:53 AM, John Criswell wrote:> Dear Pratik,
>
> What I think you will want to do is to create a new assembler and a
> new code generator for your architecture. This, I suspect, means that
> you'll need to understand how to describe your architecture's
> instruction set using TableGen, how to create an assembler using the
> MC interface, and how to build a code generator.
>
> My best suggestion is to start looking at the documentation "Writing
> an LLVM Backend" and "The LLVM Target-Dependent Code
Generator" at
> http://llvm.org/docs. The "Tablegen" document may also help. The
> links for these documents are at:
>
> http://llvm.org/docs/WritingAnLLVMBackend.html
> http://llvm.org/docs/CodeGenerator.html
> http://llvm.org/docs/TableGen/index.html
>
> As I have not written a new code generator from scratch myself, that's
> about all the help I can offer. I suggest reading these documents (if
> you have not already) and then write the list with more specific
> questions as needed.
>
> Good luck,
>
> John Criswell
>
>
> On 6/4/14, 3:37 AM, pratik dand wrote:
>> Dear,
>>
>> I am looking to build a compiler-assembler with a custom architecture.
>> I have a new Instruction set defined with me and I would like atleast
>> my C programs to get converted to assembly language corresponding to
>> the custom architecture.
>>
>> I have been going through llvm and its resources on the web, Can any
>> one of you offer guidance about the above problem.
>>
>> All I want is to develop a tool which can take in a custom
>> architecture and assemble all programs corresponding to the
architecture.
>>
>> Regards,
>> Pratik
>>
>>
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>
>
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