C pic compiler macro

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edfed

Joined: 20 Feb 2006
Posts: 4353
Location: Now

edfed 28 Nov 2008, 18:07

hello fasm, is it possible to do a standard C language compiler using the macroinstruction mechanism to insterpret first the C syntax, and second, change it in PIC hex file.
if possible, how to proceed? read the manual, done, read examples, done, but understand any? nope!

thanks.

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28 Nov 2008, 18:07

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20430
Location: In your JS exploiting you and your system

revolution 29 Nov 2008, 01:36

I strongly doubt that the macros will be powerful enough to do it. Just try to make a macro that decodes hashes and curly brackets and I think you will see the problem.

29 Nov 2008, 01:36

baldr

Joined: 19 Mar 2008
Posts: 1651

baldr 29 Nov 2008, 07:49

revolution,

I have a strong feeling that fasm interpretive layer is Turing-complete, thus it's possible to write fasm source which will compile C source (as usual, file "hello.c" Wink

).

edfed,

Selecting wrong tools to solve a problem can easily create unnecessary problems by the way. lex/yacc or back-end for gcc (if you don't want to dive so deep in C, and probably there is one already).

29 Nov 2008, 07:49

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20430
Location: In your JS exploiting you and your system

revolution 29 Nov 2008, 08:10

baldr wrote:

I have a strong feeling that fasm interpretive layer is Turing-complete, thus it's possible to write fasm source which will compile C source (as usual, file "hello.c" ).

Perhaps if you use a myriad of load/store/virtual, but it becomes very complicated. I discovered this with the RSA, SHA and RIJNDAEL macros sets. Would it not just be easier to write a stand-alone interpreter in ASM? Or better still, just use GCC, VC, BCC, or any other of the free compilers!

29 Nov 2008, 08:10

rCX

Joined: 29 Jul 2007
Posts: 172
Location: Maryland, USA

rCX 12 Dec 2008, 01:04

revolution wrote:

Or better still, just use GCC, VC, BCC, or any other of the free compilers!

But writing compilers in FASM is alot of fun... Cool

12 Dec 2008, 01:04

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20430
Location: In your JS exploiting you and your system

revolution 12 Dec 2008, 02:51

rCX wrote:

revolution wrote:
Or better still, just use GCC, VC, BCC, or any other of the free compilers!

But writing compilers in FASM is alot of fun...

Yes, I agree. And I already suggested that very method. But writing it in fasm macro language would likely have a high frustration/fun ratio.

12 Dec 2008, 02:51

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