On Mon, Jul 29, 2002 at 10:34:00PM -0300, Daniel Grunblatt wrote: > On Mon, 29 Jul 2002, Nicholas Clark wrote: > > > Here's a very minimal ARM jit framework. It does work (at least as far as > > passing all 10 t/op/basic.t subtests, and running mops.pbc) > > Cool, I have also been playing with ARM but your approach is in better > shape. (I'll send you a copy of what I got here anyway because it's bit > more documented and you might want to merge it).
It's very documented, and I did merge it. Thanks. Expect to recognise large chunks of it in a day or two when I get to a suitable point to submit a better patch. > Yes, function calls are generally slower than computing a goto. > > 7: Debian define the archname on their perl as "arm", whereas building from > > the source tree gets me armv4l (from uname) hence the substitution for > > armv[34]l? down to arm. I do have a machine with an ARM3 here (which I > > think would be armv2) but it is 14 years old, and doesn't currently have > > Linux on it (or a compiler for RISC OS, and I'm not feeling up to > > attempting a RISC OS port for parrot just to experiment with JITs) > > It's probably quite feasible to make the JIT work on everything back to > > the ARM2 (ARM1 was the prototype and I believe was never used in any > > hardware available outside Acorn, and IIRC all ARM1 doesn't have is the > > multiply instruction, so it could be done) > > Ofcourse I didn't even noticed about all those problem, I'm using TD's > ARM. Well, I didn't notice it the first time I worked on the JIT. I found that /usr/bin/perl decided I was on an "arm", and /usr/local/bin/perl decided "arm4l". (version 4 instructions, plus long multiply) > > I'll start writing some real JIT ops over the next few days, although > > possibly only for the ops mops and life use :-) > > Yay!, the ARM will be the first one with string opcodes jitted, I'm > looking forward to see if we get good speed up. Er, because I'm going to be writing the string opcodes? :-) > > Oh, and prepare an acceptable version of this patch once people decide what > > is acceptable Hint. Please. (Dan?) On Mon, Jul 29, 2002 at 11:04:58PM -0300, Daniel Grunblatt wrote: > I thing I forgot to tell is that I also have added a constant pool which > could be usefull for the ARM too, it's on my local tree,I don't know > exactly when I'm going to finish it. Useful. I suspect I can live without it, with the temporary pain of extra branches round inlined constants. Nicholas Clark -- Even better than the real thing: http://nms-cgi.sourceforge.net/
