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2015-05-09T03:09:30Z zacts: hi
2015-05-09T03:09:40Z zacts: what all would be involved in porting sbcl to a new OS?
2015-05-09T03:09:52Z zacts: I would be interested in porting SBCL to Minix 3
2015-05-09T03:10:00Z zacts: no SBCL binaries exist for Minix 3 yet
2015-05-09T03:10:16Z zacts: Minix 3 supports both x86 and the latest ARM version
2015-05-09T03:10:35Z zacts: either architectures would be cool, but both would be really awesome
2015-05-09T03:13:24Z nyef: Have a look at the various os-specific files in the source tree, particularly in src/runtime/. Assume that you'd have to write some version of that for your target OS.
2015-05-09T03:13:46Z zacts: ok
2015-05-09T03:13:50Z zacts: I'll check it out
2015-05-09T03:13:57Z nyef: And then be aware that any crazy non-posixness with things like signal handling will be exceedingly painful.
2015-05-09T03:14:07Z zacts: can I bootstrap this initially with gnu clisp?
2015-05-09T03:14:16Z zacts: or would I have to cross build?
2015-05-09T03:14:22Z nyef: Maybe. I don't know.
2015-05-09T03:14:24Z zacts: ok
2015-05-09T03:14:33Z nyef: Cross build is, fortunately, a lot easier than once it was.
2015-05-09T03:14:49Z zacts: minix 3 aims to be fully posix compatible, and NetBSD compatible, but it's not quite there yet
2015-05-09T03:15:00Z zacts: ah ok cool re cross builds
2015-05-09T03:15:14Z nyef: And there are some shortcut build processes that you might learn about as you start digging into things.
2015-05-09T03:15:44Z nyef: If it's aiming for NetBSD compatibility, you might be able to leverage the *bsd support code.
2015-05-09T03:16:10Z nyef: Basically treat it like yet another bsd fork.
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2015-05-09T03:35:08Z eeduck: hi
2015-05-09T03:35:15Z eeduck: i just build sbcl on android.
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2015-05-09T03:37:24Z evil`: hi
2015-05-09T03:37:36Z evil`: cl gammer?
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2015-05-09T06:19:41Z Xof: you can bootstrap with clisp or ccl
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2015-05-09T16:00:42Z stassats: make-array length checks are weird
2015-05-09T16:01:18Z stassats: (make-array (the number a)) results in two type-checks for A, besides the number type-check
2015-05-09T16:02:53Z stassats: ok, one for words, one for length
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2015-05-09T16:34:27Z stassats: devised proper declarations, but implicit checks throw in the spanner
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2015-05-09T16:36:17Z stassats: even though it's marked with explicit-check
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2015-05-09T16:40:05Z stassats: so, how do i combat type-checks from defknowns when using deftransform?
2015-05-09T16:50:02Z nyef: TRULY-THE ?
2015-05-09T16:50:17Z stassats: nope
2015-05-09T16:50:32Z nyef: GOOD-LUCK ?
2015-05-09T16:50:56Z stassats: only transforming into some other known function with the suitable declared type works
2015-05-09T16:51:09Z stassats: and i can't use truly-the since i do want to check types, but more restricted
2015-05-09T16:51:21Z stassats: or i know that they are checked by something else
2015-05-09T16:52:19Z nyef: Does TRULY-THE back-propagate type information?
2015-05-09T16:52:37Z stassats: i tabled that, now onto trigonometric functions on windows
2015-05-09T16:52:55Z nyef: Fair enough. Good luck with that, too. d-:
2015-05-09T16:53:12Z stassats: that ought to be straightforward
2015-05-09T16:53:22Z nyef goes back to his glass of wine, and hacking out some SQL.
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2015-05-09T17:05:54Z stassats: expt uses %pow and it's not defined on x86-win32? lovely
2015-05-09T17:06:27Z nyef: I'm suddenly reminded of the old Batman TV series.
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2015-05-09T17:16:01Z stassats: that was suspiciously easy, now for testing
2015-05-09T17:20:41Z stassats: might as well do the sleep wrappers
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2015-05-09T19:52:50Z stassats: wrapping SLEEP is tedious
2015-05-09T19:53:10Z stassats: but it looks like it shouldn't cons anymore, unless foreign function calling is consing
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2015-05-09T19:58:25Z nyef: On 32-bit as well as 64-bit?
2015-05-09T19:58:45Z stassats: it didn't cons on linux anywhere
2015-05-09T19:58:57Z stassats: not sure what was casuing x86 freebsd to cons
2015-05-09T19:59:00Z nyef: Ah.
2015-05-09T19:59:22Z stassats: i'm trying now to have C functions for double float and single float seconds
2015-05-09T19:59:33Z stassats: and do computations in C, no need to worry about boxing etc.
2015-05-09T20:00:27Z stassats: freebsd still conses
2015-05-09T20:05:24Z stassats: though i was also aiming for less complicated code
2015-05-09T20:05:32Z stassats: it doesn't look like that was achieved either
2015-05-09T20:05:41Z stassats: so, the effort is a write off
2015-05-09T20:06:08Z stassats: now onto freebsd consing
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2015-05-09T20:12:56Z stassats: ok, it's SB-C:ALIEN-FUNCALL-SAVES-FP-AND-PC
2015-05-09T20:13:12Z stassats: probably either FP is in bignum territory on freebsd
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2015-05-09T20:14:58Z stassats: same thing on 32-bit linux
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2015-05-09T20:15:50Z stassats: i mean, FP is 32 bits wide and yet it doesn't appear to cons
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2015-05-09T20:20:08Z stassats: why don't sbcl-linux-x86 or ppc not cons then?
2015-05-09T20:21:51Z stassats: ok, it's actually because of PC
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2015-05-09T20:23:33Z stassats: then a couple of tactical declaration will solve it, not sure what to do with the C wrappers
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2015-05-09T23:21:20Z stassats: but still, how come the PC on freebsd is in higher addresses?
2015-05-09T23:22:19Z nyef: ... The Lisp PC? I'd wonder about the base of dynamic space, for starters...
2015-05-09T23:22:38Z stassats: why would it be different?
2015-05-09T23:23:08Z nyef: Different preloads, maybe? I don't know. It's an easy thing to at least check, though.
2015-05-09T23:24:13Z stassats: ok, there's a whole treatise in comments about bsd spaces
2015-05-09T23:24:52Z stassats: ok, what do we do with saved fps and pcs? can we dx allocate them?
2015-05-09T23:25:21Z stassats: the conses area already dxed
2015-05-09T23:25:40Z nyef: FPs, at least, can be held unboxed: It's word-aligned, and therefore a FIXNUM.
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2015-05-09T23:26:04Z stassats: so, what about specialized two-element vectors?
2015-05-09T23:27:21Z stassats: sounds good to me
2015-05-09T23:27:36Z nyef: I forget how that works out, but it might wind up on the heap on non-x86oids.
2015-05-09T23:28:26Z stassats: it's only ever used for c-stack-is-control-stack
2015-05-09T23:28:34Z stassats: and it's already dxed, just the cons
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2015-05-09T23:29:12Z stassats: shouldn't cause any additional conservatism
2015-05-09T23:31:32Z stassats: i guess it's used for fomit-frame-pointer debugging
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2015-05-09T23:34:52Z stassats: ok, let's see if it still conses on freebsd
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2015-05-09T23:39:16Z stassats: freebsd's patch is weird
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2015-05-09T23:43:20Z stassats: that does it
2015-05-09T23:44:11Z stassats: i'll still slap alien-funcall-saves-fp-and-pc on nanosleep, but now normal foreign calls do not cons anymore
2015-05-09T23:48:11Z stassats: for some reason sleep non-consing claims to be successful on windows, even though i haven't touched it
2015-05-09T23:48:14Z stassats: why was it failing then?
2015-05-09T23:48:19Z stassats: marked as
2015-05-09T23:49:13Z stassats: ok, i think im satisfied with today's fixed and optimizations
2015-05-09T23:55:17Z stassats: oops, linux-x86 dies in cold-init
2015-05-09T23:59:30Z stassats: ok, caller fram strays into negatives