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[MiNT] Pexec and cache

To: MiNT Mailing List <mint@lists.fishpool.fi>
Subject: [MiNT] Pexec and cache
From: Miro Kropáček <miro.kropacek@gmail.com>
Date: Wed, 23 Jan 2013 22:36:41 +0100
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Hi,

I'll be extremely happy if someone corrects me but I can't see a cache invalidation code for Pexec anywhere in the kernel. Is that right?

I just discovered a bug in CT60 TOS's Pexec(), Didier only *flushes* the caches but not invalidate them which leads to horrible crashes if you use Pexec( PE_LOAD, ...) very intensively. This was bugging me for weeks, I couldn't understand how it's possible my plugins work perfectly on (cache-less) Aranym and Hatari and crashing from time to time on simplest (plugin) functions. As soon as I added 'cpusha bc' + 'cinva bc' combo after the Pexec() call, it started to work wonderfully.

Therefore I was curious how it's done in the kernel (as the kernel replaces CT60's Pexec) and I see nothing!

--
MiKRO / Mystic Bytes
http://mikro.atari.org

Follow-Ups:
- Re: [MiNT] Pexec and cache
  - From: Miro Kropáček <miro.kropacek@gmail.com>
- Re: [MiNT] Pexec and cache
  - From: Alan Hourihane <alanh@fairlite.co.uk>
- Re: [MiNT] Pexec and cache
  - From: Eero Tamminen <oak@helsinkinet.fi>

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