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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">|
</span>I know Sony does this, so it can't require too much patching.<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Heh. It's one of the bigger lumps of our local changes.<o:p></o:p></span></a></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Yes we support dllexport/dllimport for PS4 target (ELF). I remember there are both Clang and LLVM parts to the implementation, although I don't have the details
off the top of my head, and Warren has volunteered to move it all upstream. Somehow it keeps being interrupted by an imminent release, but I know he wants to get to it soon.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--paulr<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> cfe-dev [mailto:cfe-dev-bounces@lists.llvm.org]
<b>On Behalf Of </b>Reid Kleckner via cfe-dev<br>
<b>Sent:</b> Tuesday, May 31, 2016 9:29 AM<br>
<b>To:</b> Martin J. O'Riordan<br>
<b>Cc:</b> Clang Dev<br>
<b>Subject:</b> Re: [cfe-dev] Re-using 'dllexport' for non-Windows targets<o:p></o:p></span></p>
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<p class="MsoNormal">It should just work if you remove the Windows-only restriction in Attr.td:<o:p></o:p></p>
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<p class="MsoNormal">def DLLExport : InheritableAttr, TargetSpecificAttr<TargetWindows> {<o:p></o:p></p>
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<p class="MsoNormal"> let Spellings = [Declspec<"dllexport">, GCC<"dllexport">];<o:p></o:p></p>
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<p class="MsoNormal"> let Subjects = SubjectList<[Function, Var, CXXRecord]>;<o:p></o:p></p>
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<p class="MsoNormal"> let Documentation = [Undocumented];<o:p></o:p></p>
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<p class="MsoNormal">}<o:p></o:p></p>
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<p class="MsoNormal">def DLLImport : InheritableAttr, TargetSpecificAttr<TargetWindows> {<o:p></o:p></p>
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<p class="MsoNormal"> let Spellings = [Declspec<"dllimport">, GCC<"dllimport">];<o:p></o:p></p>
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<p class="MsoNormal"> let Subjects = SubjectList<[Function, Var, CXXRecord]>;<o:p></o:p></p>
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<p class="MsoNormal"> let Documentation = [Undocumented];<o:p></o:p></p>
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<p class="MsoNormal">}<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I know Sony does this, so it can't require too much patching.<o:p></o:p></p>
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<p class="MsoNormal">On Mon, May 30, 2016 at 6:38 AM, Martin J. O'Riordan via cfe-dev <<a href="mailto:cfe-dev@lists.llvm.org" target="_blank">cfe-dev@lists.llvm.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE" style="font-family:"Book Antiqua","serif"">For our SHAVE target I have re-used ‘</span><span lang="EN-IE" style="font-family:"Courier New"">__attribute__((dllexport))</span><span lang="EN-IE" style="font-family:"Book Antiqua","serif"">’
to allow me to create indirect address tables for symbols with this annotation.</span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE" style="font-family:"Book Antiqua","serif""> </span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE" style="font-family:"Book Antiqua","serif"">However, with almost every release of LLVM and CLang my implementation is broken and I have to rework my implementation.
For the most part, the existing ‘</span><span lang="EN-IE" style="font-family:"Courier New";color:black">dllexport</span><span lang="EN-IE" style="font-family:"Book Antiqua","serif"">’ attribute does everything I require and makes more sense for me to pass
it through CLang/LLVM until it reaches our back-end where it emits the IAT support rather than adding my own new attribute.</span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE" style="font-family:"Book Antiqua","serif""> </span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE" style="font-family:"Book Antiqua","serif"">This got broken again with v3.8 and this time the controls are more strict on Windows supporting targets. I thought
that before I go in an make another set of changes to re-enable this with our target, that I would ask first if there anybody has any advice or recommendation for how to “borrow” this attribute for non-Windows targets? The problem is principally CLang rather
than LLVM, so I would like to find a good and future-proof way of adapting CLang to enable this attribute on my target.</span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE" style="font-family:"Book Antiqua","serif""> </span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE" style="font-family:"Book Antiqua","serif"">Thanks in advance,</span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE" style="font-family:"Book Antiqua","serif""> </span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE" style="font-family:"Book Antiqua","serif""> MartinO</span><span lang="EN-IE"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Courier New""> </span><span lang="EN-IE"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Courier New"">Martin J. O’Riordan Email:
<a href="mailto:Martin.ORiordan@movidius.com" target="_blank">Martin.ORiordan@movidius.com</a></span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Courier New"">Compiler Development Web:
<a href="http://www.movidius.com/" target="_blank">www.movidius.com</a></span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Courier New"">Movidius Ltd. Skype: moviMartinO</span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Courier New"">1st Floor, O’Connell Bridge House, d’Olier Street, Dublin 2, Ireland</span><span lang="EN-IE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-IE"> <o:p></o:p></span></p>
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