[nhc-users] Re: porting nhc98 to plan9

[Fernan Bolando]

On Thu, Sep 10, 2009 at 5:41 PM, Malcolm Wallace
<malcolm.wallace at cs.york.ac.uk> wrote:
>> 1. The hc files are generated by nhc98comp? I will still need to
>> modify nhc98comp to always produce the unsigned char*?
>
> Yes, and yes.  The latter will be easy - it should be a single line change
> in src/compiler98/EmitState.hs
>
>> 2. I am also bypassing nhc98 script during the prelude build. I am
>> created a separate script to compile prelude under plan9. The script
>> just loads the hc files into the C compiler.
>
> Might be reasonable.  The main reason for using the nhc98 script is just to
> ensure that the right header files etc are visible.
>
>> 3. I am still guessing here, but If item 2 is an ok approach is it
>> possible to simply compile src/runtime/Runtime.a and use the .o files
>> from a unix build?
>
> Yes, that might well work, if the .o files are ABI-compatible across unix
> and plan9.
>
Hi

Thanks for the help. I can now compile most of the hc files. As a test
I also compiled cpphs.

It compiles fine, but as I expected it crashes very early into the
intialization.

It seems segfaults somewhere in

run(toplevel)

Case(HEAP_CADR_P1): *hp++ = (Node)&constptr[ HEAPOFFSET(ip[0])];
     ip+=1; Break;

The ip appears to be bieng initialized by a wrong value, but I dont
have any way of proving this yet.
Is there some additional documentation in the boot steps of the G-machine?

fernan


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