[MLton-devel] cvs commit: calling SML from C

[Matthew Fluet]

>   Warning: this checkin only supports calling SML from C with the C
>   codegen.  To get it to work with the native codegen, two things must
>   be done:
>
>   1. Add an implementation of MLton_callFromC to x86codegen.h.  It
>      shouldn't be too hard to pattern match off of MLton_callFromC in
>      ccodegen.h and main in x86codegen.h.
>
>   2. Implement C calls to Thread_returnToC in the x86 codegen.  Again,
>      the semantics are in the C codegen.
>
>   Matthew, can you look into those two things?

I probably won't get a chance to look at those two until the end of this
week or the weekend.  A brief look at ccodegen.h suggests that it
shouldn't be too hard, although there may be some trickery in
Thread_returnToC because we'll need to restore the C stack to %esp before
jumping back into the MLton_callFromC code.  I'll need to think about the
right way to do it.




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