I may have a trick to make things easier!
As a first step to validate the idea this is what I tried - I took the
x86-64.linux.base.s and removed the definition of doDe (this was a random
choice). I added the definition of doDe in another assembly (extra.nasm) in
nasm syntax -
global doDe
extern needSymEX
extern redefineCE
align 16
nop
nop
doDe:
push r13
mov r13,rbx
mov r10,[rbx+0x8]
mov rbx,[r10]
mov r10,[r13+0x8]
mov rdx,[r10+0x8]
call needSymEX
call redefineCE
pop r13
ret
I was able to generate a working picolisp as follows -
as -o x86-64.linux.base.o x86-64.linux.base.s
nasm -f elf64 extra.nasm
cc -o ../bin/picolisp extra.o x86-64.linux.base.o -Wl,--no-as-needed
-rdynamic -lc -lm -ldl -no-pie
I feel pretty sure that I should be able to translate the .s into nasm
syntax fairly mechanically. I have done similar things before. What I love
about nasm is that there is no ceremony code :)
Once all the transformations are known, we can update asm.l and add a new
arch specific program to generate the nasm code directly.
@Alex - I have a follow up question about POSIX requirement - To bet the
basic REPL up and running the POSIX requirement would be limited to getc
from STDIN right?
Regards,
Kashyap
On Mon, Feb 25, 2019 at 1:07 AM <andr...@itship.ch> wrote:
> >> I have been considering the idea of getting picolisp to run on windows
>
> I think there is no easy way to get the posix-build of picolisp to run
> on windows.
> Even if we manage (as we did before with cygwin etc.), the
> posix-dependent parts like fork() are required for all the nice stuff
> (servers, GUI, pilDB).
>
> I think the only way to bring picolisp really to windows is by
> implementing it in .NET.
> Another picolisp VM implementation, like ersatz (java).
>
> This is an huge task.
> As I understand, Alex has no incentive to it, because with his current
> customers and projects it would not be really a big benefit.
> So maybe someone else would do it. Great opportunity to learn about
> picolisp internals, and Alex surely would help if there are questions.
>
> I would like to have picolisp on windows available, but it's not a
> pressure issue for me.
> At the moment I have no capacity for such a project, maybe in a few
> months.
> It surely would be a very exciting project.
>
> - Andreas
>
>
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