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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Thanks for prompt reply.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Motivation,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">In case of debugging of bi-endian dwarf and value known at runtime some of the raw values needs to be byte swapped to change the endianity. We have a llvm based compiler which generates such dwarf,
TAG_variable marked as big endian and debugging on little endian host using lldb. The listed operator on dwarf issues does that, one operator instead of list of operators.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Proposal,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Addition of listed dwarf operator as vender extension in llvm/lldb till it gets released.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Regards, <o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="color:#2F5597;mso-fareast-language:FR-BE"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597;mso-fareast-language:FR-BE">Chirag Patel</span></b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597;mso-fareast-language:FR-BE"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;color:#2F5597;mso-fareast-language:FR-BE">Software Engineer | Raincode Labs India
<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597;mso-fareast-language:FR-BE">Tel</span></b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597;mso-fareast-language:FR-BE">: (+91) 080 41159811<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597;mso-fareast-language:FR-BE">Mob</span></b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597;mso-fareast-language:FR-BE">: (+91) 9049336744<o:p></o:p></span></p>
<p class="MsoNormal"><u><span lang="EN-US" style="font-size:12.0pt;color:blue;mso-fareast-language:FR-BE"><a href="http://www.raincodelabs.com/"><span style="color:#0563C1">www.raincodelabs.com</span></a><o:p></o:p></span></u></p>
<p class="MsoNormal"><a href="https://in.linkedin.com/in/chirag-patel-"><span style="font-size:10.0pt;color:#0563C1;mso-fareast-language:FR-BE;text-decoration:none"><img border="0" width="180" height="60" style="width:1.875in;height:.625in" id="Picture_x0020_1" src="cid:image001.png@01D5A9C5.7947D5A0" alt="linkedin-button"></span></a><span style="font-size:10.0pt;color:#2F5597;mso-fareast-language:FR-BE"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> David Blaikie <dblaikie@gmail.com>
<br>
<b>Sent:</b> 02 December 2019 19:51<br>
<b>To:</b> Chirag Patel <Chirag@raincode.com>; Adrian Prantl <aprantl@apple.com>; Paul Robinson <paul.robinson@sony.com>; Jonas Devlieghere <jdevlieghere@apple.com><br>
<b>Cc:</b> llvm-dev@lists.llvm.org<br>
<b>Subject:</b> Re: [llvm-dev] addition of vendor dwarf operator extension.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">There are some vendor extensions already in LLVM/LLDB, though I guess the main question would be: what's the motivation?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Dec 2, 2019 at 3:14 AM Chirag Patel via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-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">Hello all,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">There is one enhancement request open for dwarfv5,
<a href="http://dwarfstd.org/ShowIssue.php?issue=191107.1" target="_blank">http://dwarfstd.org/ShowIssue.php?issue=191107.1</a><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The request is for addition of dwarf expression operator to swap the top of the dwarf stack, the response seems positive but it may take some time till v6.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I like to add that operator as vendor extension but I am not sure how to go about it for llvm/lldb. Currently I am using it as vendor specific extension on our local fork.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Does adding it as vender specific extension seems like a good idea? If yes please provide me the details about adding specific vendor. <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Regards,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="color:#2F5597"> </span></b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597">Chirag Patel</span></b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:12.0pt;color:#2F5597">Software Engineer | Raincode Labs India
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597">Tel</span></b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597">: (+91) 080 41159811</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597">Mob</span></b><span lang="EN-US" style="font-size:12.0pt;color:#2F5597">: (+91) 9049336744</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><u><span lang="EN-US" style="font-size:12.0pt;color:blue"><a href="http://www.raincodelabs.com/" target="_blank"><span style="color:#0563C1">www.raincodelabs.com</span></a></span></u><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a href="https://in.linkedin.com/in/chirag-patel-" target="_blank"><span style="font-size:10.0pt;color:#0563C1;text-decoration:none"><img border="0" width="180" height="60" style="width:1.875in;height:.625in" id="gmail-m_8019694081635403889Picture_x0020_1" src="cid:image002.png@01D5A9C5.7947D5A0" alt="linkedin-button"></span></a><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
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<a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev" target="_blank">https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</a><o:p></o:p></p>
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