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<p class="MsoNormal" style="text-autospace:none">Hi all,<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Lucida Console""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none">So I tested an hello world project, by trying different compilation options. Knowing that the ones that are in use to generate the .exe are:<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none">-mwindows -m32 -mthreads -Wl,--large-address-aware,--dynamicbase,--nxcompat,--export-all-symbols<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">I identified that having all the options expect export-all-symbols, works perfectly.<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none">And having all the options except dynamicbase works too.<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">I suppose that the options of the linker dynamicbase and export-all-symbols are conflicting and avoid to debug the app.<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">I will try to remove one and retry with the VM.
<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">BTW, I have no idea of what these options do…
<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">Cheers,<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none">Vincent<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><b>From:</b> Vm-dev [mailto:vm-dev-bounces@lists.squeakfoundation.org]
<b>On Behalf Of </b>Nicolas Cellier<br>
<b>Sent:</b> Thursday, April 19, 2018 12:19<br>
<b>To:</b> Squeak Virtual Machine Development Discussion <vm-dev@lists.squeakfoundation.org><br>
<b>Subject:</b> Re: [Vm-dev] VM debugging - breakpoint issue on Windows<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Hi Eliot,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Mingw-w64 is a fork of mingw. It works for both 32 and 64 bits, contrarily<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">to mingw which wad stuck to 32bits at the time of fork. I tjink that -w64-<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">just refers to that.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="FR">Le jeu. 19 avr. 2018 à 20:39, Eliot Miranda <eliot.miranda@gmail.com> a<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in">écrit :<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> Hi Vincent,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> On Thu, Apr 19, 2018 at 11:27 AM, Eliot Miranda <eliot.miranda@gmail.com><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> wrote:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>> Hi Vincent,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>> On Thu, Apr 19, 2018 at 9:30 AM, <Vincent.Blondeau@lamresearch.com><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>> wrote:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Hi Dave,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> The optimization options are already disabled in the debug build and<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> -ggdb2 is used. So, the real code is used.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> How do I change the build in a way that the plugin is external?<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>> I see the same issue as you. I'll take a look.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> Something I find strange is TOOLPREFIX:=i686-w64-mingw32-. I would have<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> expected TOOLPREFIX:=i686-w32-mingw32-. Nicolas, have you looked at this<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> recently?<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> Vincent, if you try compiling a Hello World and setting breakpoint in main<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> you should be able to reproduce the issue. Then you can try different<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> compilers quickly. I tried debugging the VM and putting a breakpoint in<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> parseVMArgs, which is called to parse the command line. It fails also. So<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> we have a problem :-(<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Any experience is always welcome! Thanks!<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Vincent<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> -----Original Message-----<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> From: Vm-dev [mailto:vm-dev-bounces@lists.squeakfoundation.org] On<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Behalf Of David T. Lewis<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Sent: Wednesday, April 18, 2018 17:35<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> To: Open Smalltalk Virtual Machine Development Discussion <<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> vm-dev@lists.squeakfoundation.org><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Subject: Re: [Vm-dev] VM debugging - breakpoint issue on Windows<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Hi Vincent,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> I am not a Windows user so this may be completely wrong, but one thing I<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> have found in debugging plugins on Linux is that it is often necessary to<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> compile with optimization turned off so that the debugger is dealing with<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> the "real" code.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> I am guessing that perhaps your debugger is trying to use the C source<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> code to locate something that got optimized away by the compiler.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Sometimes it is helpful to compile the plugin as an external plugin (a<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> DLL). You can compile it with zero optimization and compiler flags set (-O0<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> -g or similar), and the resulting plugun should be visible to the debugger.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> The plugin that you compile this way should work with any VM (optimized or<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> not) and the debugger should still be able to see it.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> I have not done this on Windows, but that is my experience on Linux so<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> maybe it will help.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Dave<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> On Wed, Apr 18, 2018 at 06:33:12PM +0000,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> Vincent.Blondeau@lamresearch.com wrote:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Hi,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > I would like to set up a breakpoint in the VM but I got this error<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> when running:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Cannot insert breakpoint 1.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Error accessing memory address 0x509cad: Input/output error.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > For this, I am using gdb under Cygwin (same issue with powershell) and<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> invoque the primitive I want to test:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > pharo.cog.spur/builddbg/vm $ gdb --args ./Pharo.exe -headless<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ../..somewhereOnMyDisk.../Pharo.image eval "FilePluginPrims new<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> primitiveStdioDescriptorIsATTY."<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > I get these results:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > GNU gdb (GDB) 7.6.1<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Reading symbols from<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> C:\Users\BlondVi\Documents\GitRepos\opensmalltalk-vm\build.win32x86\pharo.cog.spur\builddbg\vm\Pharo.exe...done.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Next, I set a breakpoint in the primitive C method I created and run<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> the app:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > (gdb) br sqStdioDescriptorIsATTY<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Breakpoint 1 at 0x509cb6: file<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ../../platforms/win32/plugins/FilePlugin/sqWin32FilePrims.c, line 337.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > (gdb) r<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Starting program:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> C:\Users\BlondVi\Documents\GitRepos\opensmalltalk-vm\build.win32x86\pharo.cog.spur\builddbg\vm/./Pharo.exe<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> --headless ../../../../../../../../..temp/logoVM/logoVM.image eval<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> "FilePluginPrims new primitiveStdioDescriptorIsATTY."<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > [New Thread 27416.0x95bc]<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > [New Thread 27416.0xa1d0]<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > [New Thread 27416.0x3aa4]<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > [New Thread 27416.0x88bc]<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > (gdb) Warning:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Cannot insert breakpoint 1.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Error accessing memory address 0x509cad: Input/output error.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > What should I do to set the breakpoint correctly?<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Thanks in advance,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> > Vincent Blondeau<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>> ><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>> --<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>> _,,,^..^,,,_<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>> best, Eliot<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">>><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> --<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> _,,,^..^,,,_<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">> best, Eliot<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">><o:p> </o:p></p>
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