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Welcome to the main channel on the development of MoarVM, a virtual machine for NQP and Rakudo (moarvm.org). This channel is being logged for historical purposes. Set by lizmat on 24 May 2021. |
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| lizmat | timo++ MasterDuke++ | 08:54 | |
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| timo | who doesn't love a good trampoline? | 09:54 | |
| lizmat | FWIW, confirmed on MacOS as well | 09:56 | |
| timo | randomly thinking about exploitability of moarvm when someone gets some shellcode smuggled into it somehow | 11:43 | |
| it'd be swell to have all jitted frames in a special area of memory so a tool could just by looking at the $rip tell if it's looking at a jitted frame or something else | 11:44 | ||
| but if the $rip for all jitted frames becomes too regular, an attacker could guess the location of the common jit prologue for example | |||
| wow spesh dump is kinda slooow | 13:14 | ||
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| timo | looks like we sometimes compile an nqp edge "charlist" for single characters. there's probably a more efficient way to have that | 18:14 | |
| lizmat | perhaps that could be handled at RakuAST opt time? | 18:18 | |
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| timo | moar can handle it, i've got a prototype patch, but it could also be possible to do it before optimization time. if not, then at optimization time, yeah | 18:26 | |
| MVM_string_index_of_grapheme goes from 0.62% to 0.5%, barely noticeable (core setting compilation) | 18:33 | ||
| since it started at 0.62% in the first place, barely much win to be had even if it were completely gone from the profile now | |||
| oh it gets better when you recompile Raku/Grammar.nqp because the optimization makes it into the serialized blob | 18:38 | ||
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| lizmat | and yet another Rakudo Weekly News hits the Net: rakudoweekly.blog/2024/07/22/2024-...e-toolbox/ | 19:31 | |
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