Re: [cc65] cc65 calling conventions

From: MagerValp <MagerValp1cling.gu.se>
Date: 2004-09-02 08:27:47
>>>>> "SC" == Sidney Cadot <sidney@jigsaw.nl> writes:

SC> Is there documentation regarding the calling conventions used by
SC> CC65? I need to mix C and assembly and I like to play by the
SC> rules.

Since Uz is out of town:

  Arguments are pushed on the stack in left to right order. If you're
  using __fastcall__ the last argument is instead put in A (lo) and X
  (hi). You can access args with lda (sp),y. When returning, you must
  have pulled everything off (jsr incspX, where X is the number of
  bytes you want to increase the pointer with), and pushed your return
  value. If you're using __fastcall__ the return value is instead
  returned in A/X, as above.

-- 
    ___          .     .  .         .       . +  .         .      o   
  _|___|_   +   .  +     .     +         .  Per Olofsson, arkadspelare
    o-o    .      .     .   o         +          MagerValp@cling.gu.se
     -       +            +    .     http://www.cling.gu.se/~cl3polof/
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Received on Thu Sep 2 08:27:50 2004

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