On Sun, Jul 16, 2017 at 7:44 AM, Matt Wilbur <wilb...@gmail.com> wrote: > On Sun, Jul 16, 2017 at 7:26 AM, Alexander Burger <a...@software-lab.de> > wrote: >> On Sat, Jul 15, 2017 at 03:02:02PM -0400, Matt Wilbur wrote: >>> Correct. I am working on a project that uses a MIPS processo embedded >>> ... >>> I need the 64-bit PicoLisp, but MIPS isn't one of the >>> architectures currently supported. >> >> Now I understand. >> >>> I started to look at how things >>> are done for ARM and intel, but don't have the time right now to >>> properly add MIPS. >> >> This is the right place. A MIPS port would probably be similar to the arm64 >> and >> ppc64 versions. But it is indeed a nasty piece of work. Each of the existing >> ports took me several weeks. Funny thing is that the most tedious part was >> always the floating point support (despite PicoLisp does not have floats in >> the >> language, it must support them on the VM level for 'native' calls). > > I would very much like to take a crack at as I think it would be a > great learning experience. At a first glance the code that generates the > assembly looks very reminiscent of some of the old assemblers written > in Forth I once admired. I am by no means a MIPS guru but I have > enough resources I think I can figure stuff out.
Reality just intervened - my MIPS processor is native 32-bit. So I think emu is my only option. :( > >>> So, I got the 64-bit PicoLisp compiled in emulator mode, after >>> cross-compiling sysdefs, capturing the output in a text file, and then >>> using that output in places where the output from sysdefs was read via >>> a pipe. >> >> OK, good. The drawback with emu is the slow execution speed though. >> >> >>> I had assumed (perhaps incorrectly) that, using emu, VM bytecode was >>> created on the fly and that it gets "executed" >> >> The bytecodes (if we may call 16-bit words "bytes") are created at build >> time, >> as you will have noticed, in the generated C source files. >> >> >>> I am completely open to the idea that I am being completely wrong >>> headed about something. >> >> Not wrong at all. The problem is only the missing MIPS port ;) >> >> ♪♫ Alex >> >> -- >> UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
