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QUESTION
I am trying to debug a driver in UEFI firmware (OVMF) via gdb as described here:
https://github.com/tianocore/tianocore.github.io/wiki/How-to-debug-OVMF-with-QEMU-using-GDB
It works well, but I discovered that just having debug symbols for my driver is not enough. I also need debug symbols for the whole OVMF image to properly see what's going on. I have a lot of .debug files after OVMF is built with edk2, but I don't understand which ones I need to load into gdb, and what addresses I should use.
...ANSWER
Answered 2019-Aug-23 at 13:12I found some instructions involving DebugPkg, but I couldn't make gdb_uefi.py
work no matter what. It always failed to locate EFI_SYSTEM_TABLE_POINTER
.
In the end, I ended up writing my own script, which implements gdb command that does manage to successfully load all debug symbols. It is probably a worse solution, since it requires a setup: "debug.log" with driver addresses must be present when loading is performed, so you need to run QEMU at least once first. But, this is good enough for me.
My script can be found here:
QUESTION
How to properly install EDK2 on Windows? I'm trying to follow this instructions, but it doesn't work...
- created C:\EFIWorkSpace
- Created Win32 in C:\EFIWorkspace\BaseTools\Bin from BaseTools
- set PYTHON_HOME=C:\Python27
- set CYGWIN_HOME=C:\cygwin64
The errors begin when I'm trying to execute build
in C:\EFIWorkSpace>
Screenshot: https://imgur.com/a/iqUbgHZ
(c:\efiworkspace\MdePkg\Library\BasePeCoffLib\BasePeCoffLib.inf [IA32]
- System cannot find certain path]
How can i set these kits to use it further in Visual Studio 2017? I want to build an UEFI Application. Maybe someone knows a good youtube tutorial? I will appreciate any help.
...ANSWER
Answered 2018-Jun-21 at 15:15You need to change the ToolChain in target.txt from MYTOOLS to match your toolchain (VS2017x86). Also, note that UDK2017 doesn't officially support the VS2017 toolchain. Please use UDK2018.
https://github.com/tianocore/tianocore.github.io/wiki/UDK2018-Key-Features
https://github.com/tianocore/tianocore.github.io/wiki/UDK2018-How-to-Build
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