lldb 相当于 gdb 的启动命令之一是什么？

Question

I heavily used gdb before, and now give lldb a shot. I like gdb 'sstart command very much, but I can't find the equivalent one from lldb 's manual . Now I can only use " b main " followed by run compound instead. So just curious whether there is an equivalent one in lldb ? Or I can only use the compound of " b main " and run commands as a work-around.

Answer 1

You are correct, lldb doesn't have a dedicated start command. The stated motivation for that command is that gdb supports lots of runtimes that don't use a "main" symbol where determining where the first user code is not trivial, so it figures that out for you. We haven't had a need for that in lldb yet.

If you always use start to run programs in gdb, then you can just set a breakpoint on main in your ~/.lldbinit file. That will get copied to any new targets that get made in your lldb session, and run will behave exactly like start (for runtimes that use a main symbol).

If it's something you would use a lot but not always, you could make your own version fairly easily using the python extension point in the command interpreter:

https://lldb.llvm.org/use/python-reference.html#create-a-new-lldb-command-using-a-python-function

Also, feel free to file an Enhancement Request with http://bugs.llvm.org .