<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Mar 21, 2020, at 11:36 AM, Vitaly Cheptsov <<a href="mailto:cheptsov@ispras.ru" class="">cheptsov@ispras.ru</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Andrew,</span><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Thanks once again, but unfortunately it is not that simple. <span class="" style="caret-color: rgb(0, 0, 0);">Below I answered inline explaining the particular issues, which mostly seem to<span class="Apple-converted-space"> </span></span>be<span class="" style="caret-color: rgb(0, 0, 0);"> specific to CLANGPDB. LLVM stack emits PDB debug files, and even though LLDB does support them to some level, it is unlikely that this will be working well enough soon. We should really stick to more or less native debug formats, ideally those that have proper open specifications, on all platforms, and for Unix that’s DWARF.</span></div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; caret-color: rgb(0, 0, 0);" class=""><br class=""></div></div></blockquote><div><br class=""></div><div>Vitaly,</div><div><br class=""></div><div>I understand and I use the Xcode clang and not the CLANGPDB, but I use lldb a lot I was just trying to point out what works with Xcode. </div><div><br class=""></div><br class=""><blockquote type="cite" class=""><div class=""><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; caret-color: rgb(0, 0, 0);" class="">I am pretty sure LLVM can be taught to emit DWARF debug information even for PE files. Perhaps we can either make some option or provide a separate toolchain for this? Another way would be recovering CLANGELF as originally suggested.</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div></div></blockquote><div><br class=""></div><div><div>There was a bug recently in the x86_64-pc-win32-macho triple and we had to add -gdwarf to force it emit dwarf. Not sure what that compiler flag would do to CLANGPDB but it is worth a try? Last flag wins for the compiler. </div><div class=""><br class=""></div></div><br class=""><blockquote type="cite" class=""><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><blockquote type="cite" class=""><div class="">You can teach lldb about types. There is some example code here: <a href="https://github.com/tianocore/edk2/blob/master/EmulatorPkg/Unix/lldbefi.py" class="">https://github.com/tianocore/edk2/blob/master/EmulatorPkg/Unix/lldbefi.py</a></div></blockquote><div class=""><br class=""></div>This code works just fine with LLDB and DWARF (e.g. XCODE5), though I have not yet completed these changes for my scripts for LLDB, only for GDB. However, with CLANGPDB generated files it is not functional. The reason for this is because LLDB is unaware of the underlying type, i.e. it does not know what is EFI_STATUS or UINT32. I can implement pretty-printing when LLDB knows about a typedef, but it is not possible to do this when the debug information is already gone or not parsed:</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">(lldb) p Status<br class="">(unsigned long long) $1 = 0<br class="">(lldb) p &Status<br class="">(unsigned long long *) $2 = 0x000000007fe19ad8<br class="">(lldb) p (EFI_STATUS)Status<br class="">error: use of undeclared identifier 'EFI_STATUS'</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><br class=""></div><div class=""><span class="" style="caret-color: rgb(0, 0, 0);">Just in case I tried using exactly your code, and other stuff like source level debugging works just fine and symbolication works fine, so it should be some bug with PDB in particular.</span></div><div class=""><span class="" style="caret-color: rgb(0, 0, 0);"><br class=""></span></div><div class=""><blockquote type="cite" class=""><div class="">That is strange as globals usually work best? The common issue I've seen is getting the slide wrong. The EFI modules are linked at a value near zero and relocated into memory, so the slide represents that adjustment. </div><div class=""><br class=""></div><div class="">You can use `image dump sections` and ` image dump symtab` to see lldb's view of symbols. More info here [1]. </div></blockquote><br class=""></div><div class="">Yes, this one is a bit complicated, once again due to PDB most likely. It knows about global symbols, but does not list them in symtab:</div><div class=""><br class=""></div><div class="">(lldb) image dump symtab<br class="">Dumping symbol table for 91 modules.<br class="">Symtab, file = GdbSyms/Bin/X64_CLANGPDB/GdbSyms.dll, num_symbols = 0<br class="">Symtab, file = /Users/user/Documents/UefiWorkspace/Build/OvmfX64/NOOPT_CLANGPDB/X64/MdeModulePkg/Core/Dxe/DxeMain/DEBUG/DxeCore.dll, num_symbols = 0<br class="">Symtab, file = /Users/user/Documents/UefiWorkspace/Build/OvmfX64/NOOPT_CLANGPDB/X64/MdeModulePkg/Universal/DevicePathDxe/DevicePathDxe/DEBUG/DevicePathDxe.dll, num_symbols = 0</div><div class="">…</div><div class=""><br class=""></div><div class="">The slides are correct, but there are two nuances that collide with it.</div><div class=""><br class=""></div><div class="">1. There are multiple instances of the globals with the same name (e.g. gBS), but for some reason LLDB always tries to print the globals from the first module. This happens even when I am source-level debugging, and I see a gBS symbol from another module (e.g. DxeCore) used right at the same line. With GDB the closest symbol is used, but with LLDB it is always coming from the first module. I tried checking expr help to find whether I can pass it a module explicitly, but also failed.</div><div class=""><br class=""></div></div></div></blockquote><div><br class=""></div><div>Usually what happens with lldb is you get the global that is in scope for the current frame. </div><br class=""><blockquote type="cite" class=""><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class="">2. To be able to get EFI types to locate the EFI_SYSTEM_TABLE_POINTER I add a dummy GdbSyms image, which is not loaded to the firmware. So basically I cannot slide what is not in the memory, and this is also my first image. I tried deleting it anyhow, but it failed for me.</div><div class=""><br class=""></div></div></div></blockquote><div><br class=""></div><div>I've not used the fake image to get things done so I can't speak to that. I have used a fake target so I could have XIP PEIM and shadowed PEIM address available at the same time. You can't have a module loaded at 2 addresses at the same time in llldb. But you might be able to use a fake target for your fake stuff?</div><div><br class=""></div><div>Just in case:</div><div><br class=""></div><div><div> # create a faka target to store info about symbols</div><div> PeiXipTarget = target.debugger.CreateTarget (None, "i386-apple-macosx", "remote-macosx", True, error)</div><div><br class=""></div><div> # make sure the gdb-remote connection target is the active target</div><div> target.debugger.SetSelectedTarget (target)</div><div class=""><br class=""></div></div><br class=""><blockquote type="cite" class=""><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class="">(lldb) image dump sections</div><div class="">Dumping sections for 91 modules.<br class="">Sections for 'GdbSyms/Bin/X64_CLANGPDB/GdbSyms.dll' (x86_64):<br class=""> SectID Type Load Address Perm File Off. File Size Flags Section Name<br class=""> ---------- ---------------- --------------------------------------- ---- ---------- ---------- ---------- ----------------------------<br class=""> 0xffffffffffffffff container [0x0000000000000000-0x0000000000006ec0)* --- 0x00000000 0x00000000 0x00000000 GdbSyms.dll.<br class=""> 0x00000001 code [0x0000000000000220-0x0000000000005bd6)* --- 0x00000220 0x000059c0 0x60000020 GdbSyms.dll...text<br class=""> 0x00000002 data [0x0000000000005be0-0x0000000000006d79)* --- 0x00005be0 0x000011a0 0x40000040 GdbSyms.dll...rdata<br class=""> 0x00000003 data [0x0000000000006d80-0x0000000000006e30)* --- 0x00006d80 0x00000060 0xc0000040 GdbSyms.dll...data<br class=""> 0x00000004 regular [0x0000000000006e40-0x0000000000006ea4)* --- 0x00006de0 0x00000080 0x42000040 GdbSyms.dll...reloc<br class="">Sections for '/Users/user/Documents/UefiWorkspace/Build/OvmfX64/NOOPT_CLANGPDB/X64/MdeModulePkg/Core/Dxe/DxeMain/DEBUG/DxeCore.dll' (x86_64):<br class=""> SectID Type Load Address Perm File Off. File Size Flags Section Name<br class=""> ---------- ---------------- --------------------------------------- ---- ---------- ---------- ---------- ----------------------------<br class=""> 0xffffffffffffffff container [0x0000000000000000-0x00000000000523a0)* --- 0x00000000 0x00000000 0x00000000 DxeCore.dll.<br class=""> 0x00000001 code [0x000000007fe1b220-0x000000007fe61e34) --- 0x00000220 0x00046c20 0x60000020 DxeCore.dll...text<br class=""> 0x00000002 data [0x000000007fe61e40-0x000000007fe68065) --- 0x00046e40 0x00006240 0x40000040 DxeCore.dll...rdata<br class=""> 0x00000003 data [0x000000007fe68080-0x000000007fe6d160) --- 0x0004d080 0x000018a0 0xc0000040 DxeCore.dll...data<br class=""> 0x00000004 regular [0x000000007fe6d160-0x000000007fe6d398) --- 0x0004e920 0x00000240 0x42000040 DxeCore.dll...reloc<br class="">Sections for '/Users/user/Documents/UefiWorkspace/Build/OvmfX64/NOOPT_CLANGPDB/X64/MdeModulePkg/Universal/DevicePathDxe/DevicePathDxe/DEBUG/DevicePathDxe.dll' (x86_64):<br class=""> SectID Type Load Address Perm File Off. File Size Flags Section Name<br class=""> ---------- ---------------- --------------------------------------- ---- ---------- ---------- ---------- ----------------------------<br class=""> 0xffffffffffffffff container [0x0000000000000000-0x0000000000014420)* --- 0x00000000 0x00000000 0x00000000 DevicePathDxe.dll.<br class=""> 0x00000001 code [0x000000007f986220-0x000000007f996cc6) --- 0x00000220 0x00010ac0 0x60000020 DevicePathDxe.dll...text<br class=""> 0x00000002 data [0x000000007f996ce0-0x000000007f999b04) --- 0x00010ce0 0x00002e40 0x40000040 DevicePathDxe.dll...rdata<br class=""> 0x00000003 data [0x000000007f999b20-0x000000007f99a1a2) --- 0x00013b20 0x00000660 0xc0000040 DevicePathDxe.dll...data<br class=""> 0x00000004 regular [0x000000007f99a1c0-0x000000007f99a404) --- 0x00014180 0x00000260 0x42000040 DevicePathDxe.dll…reloc<br class="">…</div><div class=""><br class=""></div><div class="">So, all in all, unique global variables work, but there is no way to access duplicating variables. They either resolve to GdbSyms or just cause a crash:</div><div class=""><br class=""></div><div class="">(lldb) p mDebugInfoTableHeader<br class="">(EFI_DEBUG_IMAGE_INFO_TABLE_HEADER) $0 = {<br class=""> UpdateStatus = 2<br class=""> TableSize = 92<br class=""> EfiDebugImageInfoTable = 0x000000007f814018<br class="">}<br class="">(lldb) p gBS<br class="">error: Couldn't materialize: couldn't get the value of variable ::gBS: read memory from 0x6df8 failed<br class="">error: errored out in DoExecute, couldn't PrepareToExecuteJITExpression<br class="">(lldb) p gEfiGlobalVariableGuid<br class="">0 libLLVM.dylib 0x000000010e52ee68 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40<br class="">1 libLLVM.dylib 0x000000010e52f262 SignalHandler(int) + 188<br class="">2 libsystem_platform.dylib 0x00007fff6ca5642d _sigtramp + 29<br class="">...</div><div class=""><br class=""></div></div></div></blockquote><div><br class=""></div><div>If you want to inspect globals I think this logic works to get you data, you would need to print it out etc. </div><div><br class=""></div><div>SBValueList = lldb.target.FindGlobalVariables ("gST", 1024)</div><div>for SBValue in SBValueList:</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Module = SBValue.GetAddress().GetModule() </div><div> ModuleStr = SBValue.GetAddress().GetModule().GetFileSpec().GetFilename()</div><div class=""> Start = int (SBValue.GetLocation(), 0)</div><div class=""> End = Start + SBValue.GetByteSize() - 1</div><div class=""> <span style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px;" class="">SBDeclaration = </span>SBValue.GetDeclaration()</div><div class=""> Column = <span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px;" class="">SBDeclaration.</span>GetColumn()</div><div class=""><br class=""></div><div class="">I wrote a command in the early days to dump out all the instances of a global. </div><div class=""><br class=""></div><div class="">You can also try (lldb) image lookup -Av --name gST</div><br class=""><blockquote type="cite" class=""><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><blockquote type="cite" class=""><div class="">You can tell lldb to use the older Python like this (from the Terminal.app):</div><div class="">$ defaults write com.apple.dt.lldb DefaultPythonVersion 2</div></blockquote><br class=""></div><div class="">Thanks, that helped quite a bit, but for some reason Xcode version still crashes more for me. I attached a couple of stack traces if you feel like having a look, but once again it seems that it is all about the PDB plugin.</div><div class=""><br class=""></div><div class=""><blockquote type="cite" class=""><div class="">For the macOS API clang emits frame pointers, so you can walk the stack without symbols. You could try adding the compiler flag to emit the frame pointers. </div></blockquote><div class=""><div class=""><br class=""></div></div></div></div></div></blockquote><div><br class=""></div><div>This is easy enough to check as %rpb is the frame pointer so it will get saved/restored on function entry/exit. </div><br class=""><blockquote type="cite" class=""><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><div class="">I am pretty sure stack frames are not disabled with UEFI, as sometimes backtracing works just fine. To me it looks like debug information parsing randomly breaks in LLDB, and once it happens it forgets about other images:</div><div class=""><br class=""></div><div class="">(lldb) b CoreLocateHandleBuffer<br class="">Breakpoint 2: where = DxeCore.dll`CoreLocateHandleBuffer + 31 at Locate.c:649, address = 0x000000007fe36e4f<br class="">(lldb) c<br class="">Process 1 resuming<br class="">Process 1 stopped<br class="">* thread #1, stop reason = breakpoint 2.1<br class=""> frame #0: 0x000000007fe36e4f DxeCore.dll`CoreLocateHandleBuffer(SearchType=ByProtocol, Protocol=0x000000007f978160, SearchKey=0x0000000000000000, NumberHandles=0x000000007fe19fd8, Buffer=0x000000007fe19fc0) at Locate.c:649<br class=""> 646 <span class="Apple-tab-span" style="white-space: pre;"> </span> EFI_STATUS Status;<br class=""> 647 <span class="Apple-tab-span" style="white-space: pre;"> </span> UINTN BufferSize;<br class=""> 648 <span class="Apple-tab-span" style="white-space: pre;"> </span><br class="">-> 649 <span class="Apple-tab-span" style="white-space: pre;"> </span> if (NumberHandles == NULL) {<br class=""> 650 <span class="Apple-tab-span" style="white-space: pre;"> </span> return EFI_INVALID_PARAMETER;<br class=""> 651 <span class="Apple-tab-span" style="white-space: pre;"> </span> }<br class=""> 652 <span class="Apple-tab-span" style="white-space: pre;"> </span><br class="">(lldb) bt<br class="">* thread #1, stop reason = breakpoint 2.1<br class=""> * frame #0: 0x000000007fe36e4f DxeCore.dll`CoreLocateHandleBuffer(SearchType=ByProtocol, Protocol=0x000000007f978160, SearchKey=0x0000000000000000, NumberHandles=0x000000007fe19fd8, Buffer=0x000000007fe19fc0) at Locate.c:649<br class=""> frame #1: 0x000000007fe36816 DxeCore.dll`CoreLocateDevicePath(Protocol=0x000000007f978160, DevicePath=0x000000007fe1a060, Device=0x000000007fe1a068) at Locate.c:466<br class=""> frame #2: 0x000000007f97479a SecurityStubDxe.dll</div><div class=""><br class=""></div><div class="">———</div><div class=""><br class=""></div>(lldb) b CopyMem<br class="">Breakpoint 3: 70 locations.<br class="">(lldb) c<br class="">Process 1 resuming<br class="">Process 1 stopped<br class="">* thread #1, stop reason = breakpoint 2.53 3.53<br class=""> frame #0: 0x000000007e5c13b3 MnpDxe.dll`CopyMem(DestinationBuffer=0x000000007fe19b50, SourceBuffer=0x000000007e2aa470, Length=656) at CopyMemWrapper.c:47<br class=""> 44 <span class="Apple-tab-span" style="white-space: pre;"> </span> IN UINTN Length<br class=""> 45 <span class="Apple-tab-span" style="white-space: pre;"> </span> )<br class=""> 46 <span class="Apple-tab-span" style="white-space: pre;"> </span>{<br class="">-> 47 <span class="Apple-tab-span" style="white-space: pre;"> </span> if (Length == 0) {<br class=""> 48 <span class="Apple-tab-span" style="white-space: pre;"> </span> return DestinationBuffer;<br class=""> 49 <span class="Apple-tab-span" style="white-space: pre;"> </span> }<br class=""> 50 <span class="Apple-tab-span" style="white-space: pre;"> </span> ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)DestinationBuffer));<br class="">(lldb) bt<br class="">* thread #1, stop reason = breakpoint 2.53 3.53<br class=""> * frame #0: 0x000000007e5c13b3 MnpDxe.dll`CopyMem(DestinationBuffer=0x000000007fe19b50, SourceBuffer=0x000000007e2aa470, Length=656) at CopyMemWrapper.c:47<br class="">(lldb) finish<br class="">error: Could not create return address breakpoint.<br class="">(lldb) n<br class="">Process 1 stopped<br class="">* thread #1, stop reason = step over<br class=""> frame #0: 0x000000007e5c13ce MnpDxe.dll`CopyMem(DestinationBuffer=0x000000007fe19b50, SourceBuffer=0x000000007e2aa470, Length=656) at CopyMemWrapper.c:50<br class=""> 47 <span class="Apple-tab-span" style="white-space: pre;"> </span> if (Length == 0) {<br class=""> 48 <span class="Apple-tab-span" style="white-space: pre;"> </span> return DestinationBuffer;<br class=""> 49 <span class="Apple-tab-span" style="white-space: pre;"> </span> }<br class="">-> 50 <span class="Apple-tab-span" style="white-space: pre;"> </span> ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)DestinationBuffer));<br class=""> 51 <span class="Apple-tab-span" style="white-space: pre;"> </span> ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)SourceBuffer));<br class=""> 52 <span class="Apple-tab-span" style="white-space: pre;"> </span><br class=""> 53 <span class="Apple-tab-span" style="white-space: pre;"> </span> if (DestinationBuffer == SourceBuffer) {<br class="">(lldb) <br class="">...<br class="">Process 1 stopped<br class="">* thread #1, stop reason = step over<br class=""> frame #0: 0x000000007e5c14b4 MnpDxe.dll`CopyMem(DestinationBuffer=0x000000007fe19b50, SourceBuffer=0x000000007e2aa470, Length=656) at CopyMemWrapper.c:57<br class=""> 54 <span class="Apple-tab-span" style="white-space: pre;"> </span> return DestinationBuffer;<br class=""> 55 <span class="Apple-tab-span" style="white-space: pre;"> </span> }<br class=""> 56 <span class="Apple-tab-span" style="white-space: pre;"> </span> return InternalMemCopyMem (DestinationBuffer, SourceBuffer, Length);<br class="">-> 57 <span class="Apple-tab-span" style="white-space: pre;"> </span>}<br class="">(lldb) <br class="">Process 1 stopped<br class="">* thread #1, stop reason = step over<br class=""> frame #0: 0x000000007e5c726e MnpDxe.dll<br class="">-> 0x7e5c726e: mov rax, qword ptr [rsp + 0x60]<br class=""> 0x7e5c7273: cmp byte ptr [rax + 0x68], 0x0<br class=""> 0x7e5c7277: jne 0x7e5c7291<br class=""> 0x7e5c727d: movabs rax, -0x7fffffffffffffed<br class="">(lldb) bt<br class="">* thread #1, stop reason = step over<br class=""><div class=""> * frame #0: 0x000000007e5c726e MnpDxe.dll </div></div><div class=""><br class=""></div><div class="">———</div><div class=""><br class=""></div><div class="">(lldb) c<br class="">Process 1 resuming<br class="">Process 1 stopped<br class="">* thread #1, stop reason = signal SIGINT<br class=""> frame #0: 0x000000007fe4d72e DxeCore.dll<br class="">-> 0x7fe4d72e: cmp al, 0x0<br class=""> 0x7fe4d730: je 0x7fe4d765<br class=""> 0x7fe4d736: mov rcx, qword ptr [rsp + 0x20]<br class=""> 0x7fe4d73b: call 0x7fe4c4b0<br class="">(lldb) bt<br class="">* thread #1, stop reason = signal SIGINT<br class=""> * frame #0: 0x000000007fe4d72e DxeCore.dll</div><div class=""><br class=""></div><div class=""><blockquote type="cite" class=""><div class="">On macOS the Mach-O and dSYM have a UUID (dwarfdump -u) that is indexed by Spotlight (mdfind "com_apple_xcode_dsym_uuids == *") [2]</div><div class="">This should be the UUID in the debug directory entry and you can use that to lookup the symbols like this:</div><div class=""><br class=""></div><div class="">module = target.AddModule (None, None, uuid)</div><div class="">SBError = target.SetModuleLoadAddress (module, LoadAddress + TeAdjust)</div><div class=""><br class=""></div><div class="">Also lldb has built in help for commands, but it is kind of terse since it is autogenerated from the C++ swig. </div><div class=""><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(174, 174, 174);">(lldb) </span><span class="" style="font-variant-ligatures: no-common-ligatures;">script help (lldb.target.AddModule)</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">Help on method AddModule in module lldb:</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"></span><br class=""></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">AddModule(self, *args) method of lldb.SBTarget instance</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> AddModule(SBTarget self, SBModule module) -> bool</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> AddModule(SBTarget self, char const * path, char const * triple, char const * uuid) -> SBModule</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> AddModule(SBTarget self, char const * path, char const * triple, char const * uuid_cstr, char const * symfile) -> SBModule</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> AddModule(SBTarget self, SBModuleSpec module_spec) -> SBModule</span></div><div class=""><span class="" style="font-variant-ligatures: no-common-ligatures;"><br class=""></span></div><div class=""><span class="" style="font-variant-ligatures: no-common-ligatures;">The minimum you need to symbolicate a frame is uuid, LoadAddress, and PC. </span></div></div><div class=""><br class=""></div><div class="">[1] <a href="http://lldb.llvm.org/use/map.html" class="">http://lldb.llvm.org/use/map.html</a></div><div class="">[2] <a href="http://lldb.llvm.org/use/symbols.html" class="">http://lldb.llvm.org/use/symbols.html</a></div></blockquote><br class=""></div><div class="">Thanks for the links again. Yes, I am using some of these, and in fact for GDB that’s pretty much what I did when I worked with XCODE5. It is very likely that when I get to complete LLDB support for XCODE5 it will work quite fine too. But I am already happy with XCODE5 here, and making it even better will only help myself, but not other people with e.g. Linux or people that want me to use the same compiler with them.</div><div class=""><br class=""></div></div></div></blockquote><div><br class=""></div><div>Thanks for looking out for others. </div><div><br class=""></div><div>Thanks,</div><div><br class=""></div><div>Andrew Fish</div><br class=""><blockquote type="cite" class=""><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class="">Best regards,</div><div class="">Vitaly</div><div class=""><br class=""></div><div class=""></div></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""></div><div class=""><br class=""></div><div class=""><blockquote type="cite" class=""><div class="">21 марта 2020 г., в 20:13, Andrew Fish <<a href="mailto:afish@apple.com" class="">afish@apple.com</a>> написал(а):</div><br class="Apple-interchange-newline"><div class=""><br class="Apple-interchange-newline"><br class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class="">On Mar 21, 2020, at 3:28 AM, Vitaly Cheptsov <<a href="mailto:cheptsov@ispras.ru" class="">cheptsov@ispras.ru</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">Hello,</span><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Andrey, thanks for the hint, it was very helpful. I rewrote the GDB scripts to work with LLDB[1] and was able to debug OVMF built with CLANGPDB. While it is still quite dirty, at the very least it works.</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Unfortunately the experience was close to terrible. I may certainly do something wrong, but it is clear that PDB and LLDB do not support each other well enough. After spending several hours on playing with the tools my conclusion is that LLDB is simply not suited for UEFI PDB debugging, and we really want DWARF as there is no other opensource debugger that supports PDB on macOS and Linux</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">In case somebody knows workarounds here are the issues I faced:</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">1. All integer alias typedefs are discarded in favour of underlying types. This way EFI_STATUS and EFI_TPL become unsigned long long, CHAR8 becomes char, and CHAR16 becomes unsigned short. It does not look like LLDB has the original types anywhere at all, and it also does not have them registered.</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"> frame #0: 0x000000007fe242aa DxeCore.dll`CoreAllocatePoolPagesI(PoolType=EfiBootServicesData, NoPages=1, Granularity=4096, NeedGuard='\0') at Pool.c:322<br class=""> 319 <span class="Apple-tab-span" style="white-space: pre;"> </span> return NULL;<br class=""> 320 <span class="Apple-tab-span" style="white-space: pre;"> </span> }<br class=""> 321 <span class="Apple-tab-span" style="white-space: pre;"> </span><br class="">-> 322 <span class="Apple-tab-span" style="white-space: pre;"> </span> Buffer = CoreAllocatePoolPages (PoolType, NoPages, Granularity, NeedGuard);<br class=""> 323 <span class="Apple-tab-span" style="white-space: pre;"> </span> CoreReleaseMemoryLock ();<br class=""> 324 <span class="Apple-tab-span" style="white-space: pre;"> </span><br class=""> 325 <span class="Apple-tab-span" style="white-space: pre;"> </span> if (Buffer != NULL) {<br class="">(lldb) p Status<br class="">(unsigned long long) $3 = 0</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><span class="" style="caret-color: rgb(0, 0, 0);">Structures work more or less fine, but for simpler types like strings we are out of even potential pretty-printing.</span></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div></div></blockquote><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Vitaly,</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">You can teach lldb about types. There is some example code here: <a href="https://github.com/tianocore/edk2/blob/master/EmulatorPkg/Unix/lldbefi.py" class="">https://github.com/tianocore/edk2/blob/master/EmulatorPkg/Unix/lldbefi.py</a></div><br class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">2. Global variables are not accessible. I am not sure what happens, but they either seem to not relocate or conflict with the other names:</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">(lldb) p gST<br class="">error: Couldn't materialize: couldn't get the value of variable ::gST: read memory from 0x6e18 failed<br class="">error: errored out in DoExecute, couldn't PrepareToExecuteJITExpression<br class="">(lldb) p &gST<br class="">error: Couldn't materialize: couldn't get the value of variable ::gST: read memory from 0x6e18 failed<br class="">error: errored out in DoExecute, couldn't PrepareToExecuteJITExpression</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div></div></blockquote><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">That is strange as globals usually work best? The common issue I've seen is getting the slide wrong. The EFI modules are linked at a value near zero and relocated into memory, so the slide represents that adjustment. </div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">You can use `image dump sections` and ` image dump symtab` to see lldb's view of symbols. More info here [1]. </div><br class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">3. Quite a number of crashes.</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">In most cases autocompletion by tab press causes a crash. E.g.</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">b I<TAB></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">So will do printing of a GUID, e.g. <span class="" style="font-family: "Helvetica Neue";">p gEfiGlobalVariableGuid.</span></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><span class="" style="font-family: "Helvetica Neue";"><br class=""></span></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><font face="Helvetica Neue" class="">This may have to do with Python compatibility as Xcode 11 LLDB that uses Python 3 generally crashes more often than MacPorts LLDB 9.0. Surprisingly </font><span class="" style="caret-color: rgb(0, 0, 0);">structures work more or less fine.</span></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><span class="" style="font-family: "Helvetica Neue";"><br class=""></span></div></div></blockquote><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">You can tell lldb to use the older Python like this (from the Terminal.app):</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">$ defaults write com.apple.dt.lldb DefaultPythonVersion 2</div><br class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><span class="" style="font-family: "Helvetica Neue";">4. Ctrl+C does not produce a valid backtrace. When I break with a breakpoint, I see a proper stacktrace with more than one entry, with function prototypes and values. When I break with Ctrl+C I only see some weird backtrace with most of the entries missing regardless of frame position:</span></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><span class="" style="font-family: "Helvetica Neue";"><br class=""></span></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><font face="Helvetica Neue" class="">(lldb) bt<br class="">* thread #1, stop reason = signal SIGTRAP<br class=""> * frame #0: 0x000000007fe4c5f3 DxeCore.dll</font></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><font face="Helvetica Neue" class=""><br class=""></font></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><font face="Helvetica Neue" class="">Probably more and all the unintuitive stuff like the lack of more functional TUI, but it is hard to remember all the trials.</font></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div></div></blockquote><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">For the macOS API clang emits frame pointers, so you can walk the stack without symbols. You could try adding the compiler flag to emit the frame pointers. </div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">[1] <a href="https://github.com/acidanthera/OpenCorePkg/blob/master/Debug/Scripts/lldb_uefi.py" class="">https://github.com/acidanthera/OpenCorePkg/blob/master/Debug/Scripts/lldb_uefi.py</a></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div></div></blockquote><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">On macOS the Mach-O and dSYM have a UUID (dwarfdump -u) that is indexed by Spotlight (mdfind "com_apple_xcode_dsym_uuids == *") [2]</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">This should be the UUID in the debug directory entry and you can use that to lookup the symbols like this:</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">module = target.AddModule (None, None, uuid)</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">SBError = target.SetModuleLoadAddress (module, LoadAddress + TeAdjust)</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Also lldb has built in help for commands, but it is kind of terse since it is autogenerated from the C++ swig. </div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures; color: rgb(116, 116, 116);">(lldb)<span class="Apple-converted-space"> </span></span><span class="" style="font-variant-ligatures: no-common-ligatures;">script help (lldb.target.AddModule)</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">Help on method AddModule in module lldb:</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;"><span class="" style="font-variant-ligatures: no-common-ligatures;"></span><br class=""></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">AddModule(self, *args) method of lldb.SBTarget instance</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> AddModule(SBTarget self, SBModule module) -> bool</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> AddModule(SBTarget self, char const * path, char const * triple, char const * uuid) -> SBModule</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> AddModule(SBTarget self, char const * path, char const * triple, char const * uuid_cstr, char const * symfile) -> SBModule</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> AddModule(SBTarget self, SBModuleSpec module_spec) -> SBModule</span></div><div class=""><span class="" style="font-variant-ligatures: no-common-ligatures;"><br class=""></span></div><div class=""><span class="" style="font-variant-ligatures: no-common-ligatures;">The minimum you need to symbolicate a frame is uuid, LoadAddress, and PC. </span></div></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">[1]<span class="Apple-converted-space"> </span><a href="http://lldb.llvm.org/use/map.html" class="">http://lldb.llvm.org/use/map.html</a></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">[2] <a href="http://lldb.llvm.org/use/symbols.html" class="">http://lldb.llvm.org/use/symbols.html</a></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class="">Thanks,</div><div class=""><br class=""></div><div class="">Andrew Fish</div><div class=""><br class=""></div></div><br class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Best wishes,</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Vitaly</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""><div class=""><blockquote type="cite" class=""><div class="">20 марта 2020 г., в 22:14, Andrew Fish <<a href="mailto:afish@apple.com" class="">afish@apple.com</a>> написал(а):</div><br class="Apple-interchange-newline"><div class=""><br class="Apple-interchange-newline"><br class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class="">On Mar 20, 2020, at 8:13 AM, Vitaly Cheptsov <<a href="mailto:cheptsov@ispras.ru" class="">cheptsov@ispras.ru</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Hello,<div class=""><br class=""></div><div class="">We noticed that the original bugzilla, which intended to add new LLVM toolchain support[1], also wanted to bring ELF format support with DWARF debugging information. <span class="" style="caret-color: rgb(0, 0, 0);">For some reason this did not make its way into EDK II, and we are currently wondering, how can one debug binaries built with LLVM 9.0.</span></div><div class=""><span class="" style="caret-color: rgb(0, 0, 0);"><br class=""></span></div><div class=""><span class="" style="caret-color: rgb(0, 0, 0);">For macOS and XCODE5 toolchain we use GDB scripts based on </span><font class="">Andrei Warkentin’s work, which allow us to integrate with QEMU and VMware[2]. It is likely that they should work with little to no work on Linux with CLANG38/GCC5 with GDB once again. However, CLANGPDB apparently is using PDB debugging information, which I believe is not handled with GDB.</font></div><div class=""><br class=""></div><div class="">Could you please provide the details on the matter and let us know about the recommended route?</div><div class="">— Is dropping CLANGELF just a temporary measure and it should be resubmitted again?</div><div class="">— <span class="" style="caret-color: rgb(0, 0, 0);">Should LLDB, which seems to be aware of PDB, be used instead of GDB, when building with CLANGPDB? If so, did anybody try that?</span></div><div class=""><span class="" style="caret-color: rgb(0, 0, 0);"><br class=""></span></div></div></div></blockquote><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Vitaly,</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">I've not tried the CLANGPDB path, but if you want to connect lldb to QEMU you need to set plugin.process.gdb-remote.target-definition-file [1] to [2]. </div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">[1] lldb -o "settings set plugin.process.gdb-remote.target-definition-file x86_64_target_definition.py" -o "gdb-remote 9000"</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">[2]<span class="Apple-converted-space"> </span><a href="https://github.com/llvm-mirror/lldb/blob/master/examples/python/x86_64_target_definition.py" class="">https://github.com/llvm-mirror/lldb/blob/master/examples/python/x86_64_target_definition.py</a></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Thanks,</div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">Andrew Fish</div><br class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div class=""><span class="" style="caret-color: rgb(0, 0, 0);">Thanks!</span></div><div class=""><span class="" style="caret-color: rgb(0, 0, 0);"><br class=""></span></div><div class=""><font class=""><span class="" style="caret-color: rgb(0, 0, 0);">Best regards,</span></font></div><div class=""><font class=""><span class="" style="caret-color: rgb(0, 0, 0);">Vitaly</span></font></div><div class=""><br class=""></div><div class="">[1] <a href="https://bugzilla.tianocore.org/show_bug.cgi?id=1603" class="">https://bugzilla.tianocore.org/show_bug.cgi?id=1603</a></div><div class="">[2] <a href="https://github.com/acidanthera/OpenCorePkg/blob/master/Debug/Scripts/gdb_uefi.py" class="">https://github.com/acidanthera/OpenCorePkg/blob/master/Debug/Scripts/gdb_uefi.py</a></div><div class=""><br class=""></div></div></div></blockquote></div></blockquote></div><br class=""></div></div></blockquote></div></blockquote></div><br class=""></div><span id="cid:4917808C-41FA-4BA5-8370-27E388D25B9A@hsd1.wa.comcast.net."><crashes.txt></span></div></blockquote></div><br class=""></body></html>
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