[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] 3b4b6b: Allow 32-bit PC samples on 64-bit platforms in the...

[Eliot Miranda]

Hi Nicolas,

    can you easily determine if all the DLLs in a Win64 application are
within the 4Gb 32-bit address space or occupy a 64-bit address space?  The
VMProfiler needs to sample pcs in the range occupied by code.  On 64-bits
it will benefit from using only a 32-bit address space.  On Mac OS X all
shared libraries in the VM are within the 32-bit address space, so the
existing code works.  Alas on Linux x86 the shared libraries start at about
the half-way point through the 64-bit address space (16r7f ff ff ff ff ff
ff ff), so one has to use a full 64-bit buffer for pc samples.  I don't
know what happens with win64 and have yet to create my win64 parallels VM.
 perhaps you could check for me.  Thanks.

On Thu, Sep 29, 2016 at 4:20 PM, GitHub <noreply at github.com> wrote:

>
>   Branch: refs/heads/Cog
>   Home:   https://github.com/OpenSmalltalk/opensmalltalk-vm
>   Commit: 3b4b6b30caea8fb139d2fb8b820c9033c2b88db5
>       https://github.com/OpenSmalltalk/opensmalltalk-vm/commit/
> 3b4b6b30caea8fb139d2fb8b820c9033c2b88db5
>   Author: Eliot Miranda <eliot.miranda at gmail.com>
>   Date:   2016-09-29 (Thu, 29 Sep 2016)
>
>   Changed paths:
>     M build.linux32ARMv6/HowToBuild
>     M platforms/unix/vm/sqUnixVMProfile.c
>
>   Log Message:
>   -----------
>   Allow 32-bit PC samples on 64-bit platforms in the VMProfiler,
> defaulting to
> 32-bit samples on Mac OS X.
> Update instructions for instaling Open GL on Raspbian (Debian).
>
>
>
>


-- 
_,,,^..^,,,_
best, Eliot
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.squeakfoundation.org/pipermail/vm-dev/attachments/20160930/9724af33/attachment.htm