Re: LuaJIT PS3 port early testing
- From: Justin Cormack <justin@xxxxxxxxxxxxxxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Fri, 15 Jun 2012 15:15:26 +0100
I don't have a ps3 either but would tests on Linux on ppc64 compiled as 32
bit be useful as I do have an old ppc64 Mac lying around?
Justin
On Jun 15, 2012 1:57 PM, "Mike Pall" <mike-1206@xxxxxxxxxx> wrote:
> FYI: Current LuaJIT 2.0 git HEAD has a PS3 port! The XBox 360 port
> will follow soon.
>
> However, I've used only publicly accessible docs and a clean-room
> approach. So I can't be sure it builds with the SDK or actually
> runs on the real thing -- I don't even own a PS3. :-)
>
> Anyway, the more adventurous natures interested in testing the
> bleeding-edge PS3 port, please fetch the latest LuaJIT git HEAD:
>
> git clone http://luajit.org/git/luajit-2.0.git
>
> Then go to the luajit-2.0 directory and run:
>
> make HOST_CC="gcc -m32" CROSS=ppu-lv2-
>
> This assumes a (32 bit) host compiler (gcc) and the target
> toolchain (ppu-lv2-gcc etc.) are *both* in the path. The build
> should work either on a Linux host, or on a Windows host with
> MinGW and the MSys shell.
>
> The 'luajit' command line executable that's built by default isn't
> too useful, though. You'll need to package it up with a Lua file
> et cetera -- I don't know about the details. You'll probably want
> to embed libluajit.a in your game binary, anyway.
>
> Ok, so I'm basically throwing it out there in the current state.
> Please let me know how well it works or if it works at all. :-)
> [But make sure you don't violate any NDAs with whatever you write
> in public.]
>
>
> FAQ#1: Yes, this only runs the LuaJIT interpreter. Sadly, the
> console operating systems don't allow JIT compilers. But the fast
> LuaJIT interpreter should still offer a considerable speedup over
> the Lua interpreter.
>
> FAQ#2: No, the FFI isn't enabled either, due to unimplemented ABI
> differences. Not that it would do you much good, since binaries
> have no symbols, or without a JIT compiler (no JIT ==> slow FFI).
>
> FAQ#3: Yes, the port _has_ been tested under qemu-ppc64. But that
> doesn't have nearly all of the PS3 ABI weirdness, like 32 bit
> pointers in 64 bit registers aka PPC32on64, aka __PPC64__, but
> without _LP64.
>
> FAQ#4: No, LuaJIT does NOT run on pure PPC64 with 64 bit pointers,
> except with some modifications and special QEMU settings. A PPC64
> port wasn't a goal (and isn't that useful). I've used it solely
> for developing parts of the PS3 port.
>
> --Mike
>
>
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