Small Device C Compiler suite

Hi Peter -
  
At 2005-10-24, 12:12:53 you wrote:
>
>On Mon, 24 Oct 2005, Paul Stoffregen wrote:
>
>>
>>> Now, anyone interrested in some code snippets to make the USB Autovector 
>>> feature of the EzUSB chips work with sdcc?
>>> 
>> Several months ago, I played with one of these chips.  I never did figure out 
>> a nice way to get SDCC (mainly the linker) to build the autovector table and 
>> endpoint descriptor tables at absolute addresses.  So instead I did some very 
>> ugly hacks with perl scripts to read a couple simple text files, and the 
>> symbol table from the linker.  The scripts output absolute addressed 
>> assembly, which is then run through an assembler, and the intel hex is post 
>> processed and merged with the linker's hex by more ugly perl scripts.
>>
>> An ugly hack, but it worked.  I'd be really curious to see if anyone has 
>> found a "nice" was to do this using SDCC.
>
>Not nice, but I posted a tiny patch to sdcc that allows 
>initialised static symbols at absolute addresses. It is against 2.4.0 
>but it should work with newer versions of sdcc. It allows you to do:
>
>code char at 0x1234 foo[] = "abcd"; // etc
>
>and may clobber other data in the code segment (it is your 
>responsability to ensure that it does not). Of course you can put 
>whatever you like as 0x1234 and "abcd", as long as the symbols resolve 
>to static data at code generation time for the module where they are 
>declared (not the whole program). I do not think that it works with 
>relocated symbols on the rhs of the assignment (yet).
>
>You could generate a table of symbols by linking with dummy values, and 
>then recompile and link after stuffing static data from the symbol 
>file into the source. Basically what you are doing now with Perl imho.
>
>The file was posted in the thread: "Subject: re: sdcc feature request" 
>and I posted a patch in response to myself, in the thread: "Subject: re: 
>sdcc feature request: some help needed (partial solution patch)" on 2 
>May 2005
>
>Peter
>
>
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Aloha => Beau;
beaucox@...
2005-10-25