问题
I am working on a huge program that employs a (custom built) micro-threading solution. It sometimes happens that I need debug a crash. During such times, it is useful to be able to switch from one micro-thread to another.
If I'm doing live debugging, I can replace all of the registers to those that came from the micro-thread context. I have written a macro to do just that, and it works really well.
The problem is that I cannot change the register values if I am doing post-mortem debugging (from a core file). In such a case, I have no way to tell GDB to change its concept of what the current frame is, as all registers are considered read-only in that case.
Is there a way to tell GDB about my custom context management?
Shachar
回答1:
There's not a simple, built-in way to do this in gdb.
I think probably the simplest way would be to write a version of gdbserver that can read your core files and that presents your micro-threads to gdb as real threads. There's been at least one gdbserver out there that can read core files already, so maybe it isn't crazily hard. However, I couldn't really say for sure.
来源：https://stackoverflow.com/questions/19972568/teaching-gdb-to-understand-micro-threads-from-core-files