[Vm-dev] Re: [squeak-dev] Building (Linux) VM - with segfaults. that point to audio

Brad Fuller bradallenfuller at gmail.com
Wed Nov 19 15:39:00 UTC 2008

On Wed, Nov 19, 2008 at 4:19 AM, David T. Lewis <lewis at mail.msen.com> wrote:
> On Tue, Nov 18, 2008 at 10:22:36AM -0800, Brad Fuller wrote:
>> The problem might be that arrayIndex is 32bit and it is used to
>> calculate *samples which is 64bit. This would be a problem if
>> arrayIndex has bit31 set.
> Brad,
> You're looking in the right place. Most of the problems on 64 bit
> platforms relate to mixing 64 bit pointers with 32 bit integers.
> I have worked through these issues for a few plugins, but as far
> as I know no one has addressed them for sound support, so you are
> probably the first person to do so (please proceed!).
> You will probably be able to identify most of the issues by tracking
> down compiler warnings and looking at the corresponding C code,
> but one thing that has been helpful for me in matching up the
> Smalltalk slang with the external support code is SlangBrowser.
> This allows you to look at generated C code in Squeak (this of
> course being where many of the questionable type casts happen).
>        http://wiki.squeak.org/squeak/5916
> You can get a VMMaker with SlangBrowser support from SqueakSource.
> VMMaker-dtl.107 would be the most recent in that branch. You'll
> still need to separately load the browser support from
>        http://bugs.squeak.org/view.php?id=5932
> If you want to get a better feel for the type conversions involved,
> then MemoryAccess package may also be of interest. Support for this
> is also included in VMMaker-dtl.107.
>        http://wiki.squeak.org/squeak/6081
> Good luck, and please post your results if you get the sound support
> working.

So, there's no way, .... good way.... to do this outside of squeak?

Brad Fuller

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